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EP3307665B1 - Winding shaft for receiving at least one winding core - Google Patents

Winding shaft for receiving at least one winding core Download PDF

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Publication number
EP3307665B1
EP3307665B1 EP16728311.8A EP16728311A EP3307665B1 EP 3307665 B1 EP3307665 B1 EP 3307665B1 EP 16728311 A EP16728311 A EP 16728311A EP 3307665 B1 EP3307665 B1 EP 3307665B1
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EP
European Patent Office
Prior art keywords
winding
clamping
clamping elements
winding shaft
elements
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.)
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Application number
EP16728311.8A
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German (de)
French (fr)
Other versions
EP3307665A1 (en
Inventor
Frank Hoffmann
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.)
Windmoeller and Hoelscher KG
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Windmoeller and Hoelscher KG
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Application filed by Windmoeller and Hoelscher KG filed Critical Windmoeller and Hoelscher KG
Priority to PL16728311T priority Critical patent/PL3307665T3/en
Publication of EP3307665A1 publication Critical patent/EP3307665A1/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
    • B65H75/24—Constructional details adjustable in configuration, e.g. expansible
    • B65H75/242—Expansible spindles, mandrels or chucks, e.g. for securing or releasing cores, holders or packages
    • B65H75/248—Expansible spindles, mandrels or chucks, e.g. for securing or releasing cores, holders or packages expansion caused by actuator movable in axial direction
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H18/00—Winding webs
    • B65H18/02—Supporting web roll
    • B65H18/028—Both ends type
    • 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
    • B65H75/24—Constructional details adjustable in configuration, e.g. expansible
    • B65H75/242—Expansible spindles, mandrels or chucks, e.g. for securing or releasing cores, holders or packages
    • B65H75/243—Expansible spindles, mandrels or chucks, e.g. for securing or releasing cores, holders or packages actuated by use of a fluid
    • B65H75/2437—Expansible spindles, mandrels or chucks, e.g. for securing or releasing cores, holders or packages actuated by use of a fluid comprising a fluid-pressure-actuated elastic member, e.g. a diaphragm or a pneumatic tube
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2511/00—Dimensions; Position; Numbers; Identification; Occurrences
    • B65H2511/20—Location in space
    • 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
    • B65H2701/10—Handled articles or webs
    • B65H2701/17—Nature of material
    • B65H2701/175—Plastic

Definitions

  • Two adjacent rows of tensioning elements seen in the circumferential direction are preferably offset in the axial direction, so that the stability of the winding shaft is increased again, which again has a positive effect on the winding quality.

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  • Winding Of Webs (AREA)

Description

Die Erfindung betrifft eine Wickelwelle zur Aufnahme wenigstens einer Wickelhülse und ein Verfahren zum Verspannen von wenigstens einer Wickelhülse.The invention relates to a winding shaft for receiving at least one winding tube and a method for bracing at least one winding tube.

Kunststofffolie, insbesondere solche, die auf einer Blasfolien- oder einer Gießfolienanlage hergestellt wurden, muss zu Transport- und Weiterverarbeitungszwecken auf Wickelhülsen aufgewickelt werden. Dazu werden Wickelhülsen sukzessive auf Wickelwellen aufgeschoben. Sodann wird die bestückte Wickelwelle in eine Wickelvorrichtung übernommen, in welcher damit begonnen wird, die Kunststofffolie auf die noch leeren Wickelhülsen aufzuwickelnPlastic film, especially those that have been produced on a blown film or a cast film system, must be wound onto winding tubes for transport and further processing purposes. For this purpose, winding cores are successively pushed onto winding shafts. The loaded winding shaft is then transferred to a winding device in which it begins to wind up the plastic film on the still empty winding tubes

Die Druckschrift WO 2015/055713 A1 offenbart eine Wickelwelle gemäß dem Oberbegriff des Anspruchs 1.The publication WO 2015/055713 A1 discloses a winding shaft according to the preamble of claim 1.

Die Druckschrift GB 2 329 948 A offenbart eine Vorrichtung und ein Verfahren zum Vorzentrieren und anschließenden Befestigen von Wickelhülsen auf einer Wickelwelle. Diese Vorrichtung umfasst ein pneumatisches System zum Vorzentrieren und ein zusätzliches, rein mechanisches System zum Befestigen der Wickelhülsen.The publication GB 2 329 948 A. discloses an apparatus and a method for pre-centering and then fastening winding cores on a winding shaft. This device comprises a pneumatic system for precentering and an additional, purely mechanical system for fastening the winding tubes.

Die Druckschrift DE 91 13 939 U1 offenbart ebenfalls ein System zum Vorzentrieren und anschließenden Verspannen von Wickelhülsen auf einer Wickelwelle, wobei zum Vorzentrieren federnd gelagerte Druckstücke vorgesehen sind und wobei zum Verspannen beispielsweise ein pneumatisches System vorgeschlagen wird.The publication DE 91 13 939 U1 also discloses a system for pre-centering and subsequent tensioning of winding cores on a winding shaft, spring-mounted pressure pieces being provided for pre-centering and, for example, a pneumatic system being proposed for tensioning.

Allerdings ist häufig das Problem zu beklagen, dass die fertigen Wickel eine unzureichende Qualität aufweisen. Insbesondere beim Anwickeln auf neue Hülsen kommt es regelmäßig zur Faltenbildung der Kunststofffolie.However, there is often the problem that the finished packages are of insufficient quality. The plastic film regularly wrinkles, especially when it is rolled onto new tubes.

Die Aufgabe der vorliegenden Erfindung ist es daher, Folienwickel mit gesteigerter Qualität zu produzieren.The object of the present invention is therefore to produce film rolls with increased quality.

Erfindungsgemäß wird diese Aufgabe durch sämtliche Merkmale des Anspruchs 1 gelöst.According to the invention, this object is achieved by all of the features of claim 1.

Gemäß der vorliegenden Erfindung ist vorgesehen, dass die Wickelwelle einen Wellenkörper aus faserverstärktem Kunststoff umfasst, wobei bevorzugt kohlenfaserverstärker Kunststoff (CFK) vorgesehen ist. Zusätzlich ist vorgesehen, dass an wenigstens einem Ende der Wickelwelle zumindest zwei Lagerstellen angeordnet sind. Es können auch an beiden Enden jeweils wenigstens zwei Lagerstellen vorgesehen sein. Die Wickelwelle ist dazu eingerichtet, Wickelhülsen mit einem Innendurchmesser von maximal 80mm zu halten. Für verschiedene Anwendungen haben Wickelhülsen ein Normmaß von 3 Zoll (in Bezug auf den Innendurchmesser). Dies sind beispielsweise Wickelhülsen zum Wickeln von Stretchfolie mit einer Dicke im Bereich von 10 bis 30 Mikrometern, wobei Wickel dann in Packautomaten oder manuell verwendet werden, um beladene Paletten mit einer Ladungssicherung, aber auch mit einem Schutz gegen äußere Einflüsse zu versehen.According to the present invention, it is provided that the winding shaft comprises a shaft body made of fiber-reinforced plastic, carbon-fiber reinforced plastic (CFRP) preferably being provided. In addition is provided that at least one bearing point is arranged on at least one end of the winding shaft. At least two bearing points can also be provided at both ends. The winding shaft is set up to hold winding cores with an inner diameter of maximum 80mm. For various applications, winding cores have a standard dimension of 3 inches (in relation to the inner diameter). These are, for example, winding sleeves for winding stretch film with a thickness in the range from 10 to 30 micrometers, whereby windings are then used in automatic packing machines or manually to provide loaded pallets with load securing, but also with protection against external influences.

Eine Wickelwelle, die für Wickelhülsen mit einem Innendurchmesser von maximal 80mm ausgelegt ist, weist in der soeben genannten Kombination eine hohe Steifigkeit auf, so dass Schwingungen, die für die Faltenbildung mit verantwortlich sind, reduziert werden. Besonders vorteilhaft ist die genannte Merkmalskombination, wenn die Arbeitsbreite, also der Bereich in axialer Richtung der Wickelwelle, in dem die Wickelhülsen platzierbar sind, mindestens 1 Meter, vorzugsweise mindestens 1,5 m ist.In the combination just mentioned, a winding shaft that is designed for winding cores with an inner diameter of maximum 80 mm has a high degree of rigidity, so that vibrations that are responsible for the formation of folds are reduced. The combination of features mentioned is particularly advantageous if the working width, ie the area in the axial direction of the winding shaft in which the winding tubes can be placed, is at least 1 meter, preferably at least 1.5 m.

Eine erfindungsgemäße Wickelwelle umfasst über den Umfang und über die axiale Länge verteilten und radial verschiebbaren Spannelementen zum Verspannen, Halten und Lösen der Wickelhülsen.A winding shaft according to the invention comprises clamping elements distributed and radially displaceable over the circumference and over the axial length for tensioning, holding and releasing the winding tubes.

Weiterhin ist erfindungsgemäß vorgesehen,
dass Spannelemente zum Vorzentrieren der Wickelhülse und Spannelemente zum Verspannen der Wickelhülse in Umfangsrichtung alternierend angeordnet vorgesehen sind, wobei die Spannelemente in radialer Richtung der Wickelwelle nach außen verfahrbar sind, wobei die Spannelemente eine verbreiterte Basis umfassen und innerhalb von Öffnungen verschiebbar sind, wobei die Basis innerhalb einer verbreiterten Nut verschiebbar ist, wobei die verbreiterte Nut als Wegbegrenzung dient,
dass zum Ausfahren der Spannelemente Schläuche vorgesehen sind, welche zwischen der verbreiterten Nut und der dem jeweiligen Spannelement abgewandten Fläche der Basis eingelegt sind, welche mit einem Gas befüllbar und unter Druck setzbar sind, wobei alle Schläuche von einem zentralen Druckgasrohr mit Gas beaufschlagbar sind, wobei alle Schläuche mit einer Verbindungsleitung mit dem zentralen Druckgasrohr verbunden sind, und
dass eine Drosseleinrichtung vorgesehen ist oder die Spannelemente zum Verspannen mit einer Federkraft beaufschlagbar sind, um die Bewegung der Spannelemente zum Verspannen gegenüber der Bewegung der Spannelemente zum Vorzentrieren zu verzögern.Furthermore, the invention provides
that tensioning elements for precentering the winding tube and tensioning elements for tensioning the winding tube are provided alternately in the circumferential direction, the tensioning elements being movable outward in the radial direction of the winding shaft, the tensioning elements comprising a widened base and being displaceable within openings, the base being within a widened groove is displaceable, the widened groove serving as a travel limitation,
that hoses are provided for extending the tensioning elements, which are between the widened groove and that of the respective tensioning element facing away surface of the base are inserted, which can be filled with a gas and pressurized, all hoses can be acted upon by gas from a central compressed gas pipe, all hoses being connected to the central compressed gas pipe by a connecting line, and
that a throttle device is provided or the tensioning elements for tensioning can be acted upon by a spring force in order to delay the movement of the tensioning elements for tensioning compared to the movement of the tensioning elements for precentering.

In Umfangsrichtung gesehen sind bevorzugt mindestens sechs Reihen von Spannelementen vorgesehen, wobei etwa die Hälfte zum Vorzentrieren der Wickelwellen geeignet ist (Vorzentrierelemente), während die übrigen Spannelemente mit Halten der Wickelhülsen vorgesehen sind. Das Verspannen einer Wickelhülse geht dann wie folgt vor sich: Zunächst sind die Spannelemente zum Vorzentrieren, also die Vorzentrierelemente, in radialer Richtung der Wickelwelle nach außen verfahrbar und zwar bis wenige Zehntel Millimeter unterhalb des Nenndurchmessers der Wickelhülse. Damit wird die Wickelhülse nicht von allen diesen Spannelementen berührt, jedoch verbleibt ein Spalt, der sehr gering ist, oder es besteht ein leicht berührender Kontakt. Damit wird die Hülse, die vorzugsweise aus Pappe und/oder Papier besteht, nahezu zentriert, wobei die Hauptträgheitsachsen der Hülse und der Wickelwelle nahezu fluchten. Sodann sind die Spannelemente zum Halten der Wickelhülse nach außen verfahrbar. Anschließend ist die Wickelhülse fest auf der Wickelwelle verspannt. Da die letztgenannten Spannelemente lokal die Wickelhülse leicht nach außen drücken, wandern die freien Bereiche leicht nach innen, so dass die Spannelemente zum Vorzentrieren nun sämtlichst in Kontakt mit der Wickelhülse stehen und eine zusätzliche Stütz- und Haltewirkung ausüben.Viewed in the circumferential direction, at least six rows of tensioning elements are preferably provided, approximately half being suitable for pre-centering the winding shafts (pre-centering elements), while the remaining tensioning elements are provided with holding the winding sleeves. The tensioning of a winding tube then proceeds as follows: First, the tensioning elements for pre-centering, i.e. the pre-centering elements, can be moved outwards in the radial direction of the winding shaft, namely up to a few tenths of a millimeter below the nominal diameter of the winding tube. So that the winding tube is not touched by all of these clamping elements, but a gap remains that is very small or there is a light touching contact. So that the sleeve, which preferably consists of cardboard and / or paper, almost centered, with the main axes of inertia of the sleeve and the winding shaft almost aligned. The clamping elements for holding the winding tube can then be moved outwards. The winding sleeve is then firmly clamped onto the winding shaft. Since the latter clamping elements locally push the winding tube slightly outwards, the free areas move slightly inwards, so that the clamping elements are now all in contact with the winding tube for pre-centering and exert an additional support and holding effect.

Zum Aufschieben von Wickelhülsen können die Spannelemente sich vollständig innerhalb der Wickelwelle befinden, d. h. ihre Außenoberflächen ragen nicht über die Außenoberfläche der Wickelwelle hinaus.To slide on winding cores, the clamping elements can be located entirely within the winding shaft, i. H. their outer surfaces do not protrude beyond the outer surface of the winding shaft.

Durch diese Bestandteile und durch diese Vorgehensweise wird erreicht, dass die Wickelhülse in der Wickeleinrichtung nahezu einen idealen Rundlauf erreicht, was die Faltenbildung merklich reduziert. Damit lässt sich die Wickelqualität erheblich steigern.These components and this procedure ensure that the winding tube in the winding device almost reaches an ideal concentricity, which noticeably reduces the formation of folds. This can significantly increase the winding quality.

Die erfindungsgemäße Wickelwelle bringt besondere Vorteile mit sich in Kombination mit einer Wickeleinrichtung, welche die auf einer Gießfolienanlage produzierte Folie inline, also ohne Zwischenspeicherung aufwickelt, wobei die Produktionsgeschwindigkeit 500 bis 700 Meter pro Minute (m/min) beträgt, da sich hier die optimale Positionierung der Wickelhülse besonders positiv auswirkt.The winding shaft according to the invention has particular advantages in combination with a winding device which winds up the film produced on a cast film system inline, that is to say without intermediate storage, the production speed being 500 to 700 meters per minute (m / min), since this is the optimal positioning the winding sleeve has a particularly positive effect.

In einer vorteilhaften Ausführungsform ist die Wickelwelle auf einen Hülseninnendurchmesser von 2 Zoll ausgelegt, wodurch die Vorteile der erfindungsgemäßen Wickelwelle nochmals stärker zum Tragen kommen.In an advantageous embodiment, the winding shaft is designed for an inner sleeve diameter of 2 inches, as a result of which the advantages of the winding shaft according to the invention become even more evident.

Die in axialer Richtung der Wickelwelle gesehen in einer Reihe angeordneten Spannelemente weisen einen Abstand auf, sind also unterbrochen. Das Vorsehen eines Abstands dient dazu, dass eine größtmögliche Stabilität des faserverstärkten Materials erreicht wird. So müssen bei voneinander beabstandeten Spannelementen weniger Fasern durchtrennt werden als bei durchgehenden Spannelementen. Der Abstand zweier in einer Riehe liegenden Spannelemente beträgt mindestens 50mm, bevorzugt 100mm und höchstens 200 mm, so dass Wickelhülsen mit einer Normlänge von 250 mm beliebig positionierbar sind, ohne dass die Kräfte zum Verspannen nennenswert reduziert sind.The clamping elements, which are arranged in a row in the axial direction of the winding shaft, are at a distance and are therefore interrupted. The provision of a distance serves to achieve the greatest possible stability of the fiber-reinforced material. With tensioning elements spaced apart from one another, fewer fibers have to be cut than with continuous clamping elements. The distance between two clamping elements in a row is at least 50 mm, preferably 100 mm and at most 200 mm, so that winding cores with a standard length of 250 mm can be positioned as desired without the forces for clamping being significantly reduced.

Es ist vorteilhaft, wenn auf der Wickelwelle solche Wickelhülsen aufbringbar sind, die eine Normlänge von 250mm oder mehr haben. In diesem Fall lassen sich die Wickelhülsen mit einer ausreichenden Anzahl an Spannelementen halten, so dass ein idealer Rundlauf erzielt wird.It is advantageous if such winding cores that have a standard length of 250 mm or more can be applied to the winding shaft. In this case, the winding cores can be held with a sufficient number of clamping elements, so that ideal concentricity is achieved.

Zwei in Umfangsrichtung gesehen benachbarte Reihen von Spannelementen sind bevorzugt in axialer Richtung versetzt, so dass die Stabilität der Wickelwelle nochmals erhöht ist, was sich erneut positiv auf die Wickelqualität auswirkt.Two adjacent rows of tensioning elements seen in the circumferential direction are preferably offset in the axial direction, so that the stability of the winding shaft is increased again, which again has a positive effect on the winding quality.

Weitere Vorteile, Merkmale und Einzelheiten der Erfindung gehen aus der nachfolgenden Beschreibung hervor, in der unter Bezugnahme auf die Figuren verschiedene Ausführungsbeispiele im Einzelnen erläutert sind. Die einzelnen Figuren zeigen:

Fig. 1
Seitenansicht einer erfindungsgemäßen Wickelwelle
Fig. 2
Schnitt II - II aus der Figur 1
Fig. 3
Abwicklung der Umfangsfläche der Wickelwelle
Further advantages, features and details of the invention emerge from the following description, in which various exemplary embodiments are explained in detail with reference to the figures. The individual figures show:
Fig. 1
Side view of a winding shaft according to the invention
Fig. 2
Section II - II from the Figure 1
Fig. 3
Development of the peripheral surface of the winding shaft

Die Figur 1 zeigt eine Seitenansicht einer Wickelwelle 1. Diese Wickelwelle umfasst einen Wickelwellenkörper 2, der die Arbeitsbreite A hat, was durch den Doppelpfeil deutlich gemacht wird. An jedem ihrer Enden umfasst die Wickelwelle 1 einen Zapfen 3, welcher jeweils in zwei Lagerstellen 4, 5 rotierbar gelagert ist. Diese Lagerstellen können an sich bekannte Rollen- oder Kugellager umfassen. Zum Wechsel der Wickelhülsen, die in dieser Figur nicht eingezeichnet sind, kann ein Ende der Wickelwelle 1 freigelegt werden, oder die Wickelwelle 1 kann aus der Wickelvorrichtung entnommen werden. Dabei können die Lagerstellen 4,5 vollständig oder teilweise an der Wickelwelle oder in der Wickelvorrichtung verbleiben.The Figure 1 shows a side view of a winding shaft 1. This winding shaft comprises a winding shaft body 2, which has the working width A, which is made clear by the double arrow. At each of its ends, the winding shaft 1 comprises a pin 3, which is rotatably mounted in two bearing points 4, 5. These bearings can include known roller or ball bearings. To change the winding tubes, which are not shown in this figure, one end of the winding shaft 1 can be exposed, or the winding shaft 1 can be removed from the winding device. The bearing points 4, 5 can remain completely or partially on the winding shaft or in the winding device.

In der Figur 2 ist nun der Schnitt II - II aus der Figur 1 zu sehen. Zunächst sind die Spannelemente 20 und 21 zu erkennen, wobei die Spannelemente 20 zum Vorzentrieren (Vorzentrierelemente) und die Spannelemente 21 zum Verspannen vorgesehen sind. Die Spannelemente 20 und 21 sind in Umfangsrichtung ϕ gesehen alternierend angeordnet. Im vorliegenden Ausführungsbeispiel sind je drei Spannelemente 20 und 21 zu erkennen. Allgemein können jedoch auch mehr Spannelemente 20 und/oder 21 vorgesehen sein, um einen noch besseren Rundlauf zu erzielen. Der Aufbau der Spannelemente wird weiter unten beschrieben werden. Die Spannelemente 20 und 21 können mit einer verbreiterten Basis 22 verbunden oder einstückig mit dieser ausgebildet sein und sind innerhalb der Öffnung 23 verschiebbar, so dass sie unterschiedliche radiale Positionen einnehmen können. Die Basis 22 ist innerhalb einer verbreiterten Nut 24 in radialer Richtung verschiebbar. Die verbreiterte Nut 24 dient auch als Wegbegrenzung, so dass die Wickelhülse zwar mit großer Kraft haltbar ist, diese aber nicht mit einem zu großen Stellweg über Gebühr aus der Zylinderform gedrückt wird.
Das Ausfahren der Spannelemente erfolgt im gezeigten Ausführungsbeispiel jeweils durch wenigstens einen zwischen der verbreiterten Nut 24 und der dem Spannelement 20, 21 abgewandten Fläche der Basis 22 eingelegten Schlauch 25, der mit einem Gas, insbesondere mit Luft, befüllt und unter Druck setzbar ist. Alle Schläuche sind dazu mit einer Verbindungsleitung 26 mit einem zentralen Druckgasrohr 27 verbunden, welches vorzugsweise über eine Drehdurchführung von außerhalb der Wickelwelle mit einem unter Druck stehenden Gas versorgbar ist.In the Figure 2 is now the section II - II from the Figure 1 to see. First of all, the clamping elements 20 and 21 can be seen, the clamping elements 20 being provided for precentering (precentering elements) and the clamping elements 21 for clamping. The clamping elements 20 and 21 are arranged alternately as seen in the circumferential direction ϕ. In the present embodiment three clamping elements 20 and 21 can be seen. In general, however, more clamping elements 20 and / or 21 can also be provided in order to achieve an even better concentricity. The structure of the clamping elements will be described below. The clamping elements 20 and 21 can be connected to a widened base 22 or can be formed in one piece with it and can be displaced within the opening 23 so that they can assume different radial positions. The base 22 is displaceable in the radial direction within a widened groove 24. The widened groove 24 also serves as a travel limiter, so that the winding tube is stable with great force, but it is not pushed out of the cylinder shape excessively with an excessive travel.
In the exemplary embodiment shown, the tensioning elements are extended by at least one hose 25 inserted between the widened groove 24 and the surface of the base 22 facing away from the tensioning element 20, 21 and which is filled with a gas, in particular with air, and can be pressurized. For this purpose, all hoses are connected to a connecting line 26 with a central compressed gas pipe 27, which is preferably connected via a Rotary feedthrough can be supplied with a gas under pressure from outside the winding shaft.

Um nun eine oder mehrere Wickelhülsen auf der Wickelwelle zu verspannen, wird das zentrale Druckgasrohr 27 mit einem Gas beauftschlagt, welches in die Schläuche gelangt. Diese Schläuche 25 expandieren und drücken so die Spannelemente 20, 21 nach außen. Um zu erreichen, dass die Spannelemente 21 später als die Spannelemente 20 betätigt werden oder dass die Spannelemente 21 sich langsamer als die Spannelemente 21 bewegen, ist eine Drosseleinrichtung vorgesehen, die auf unterschiedliche Weise realisiert sein kann. Eine einfache Möglichkeit ist es, den maßgeblichen Querschnitt der Verbindungsleitungen 26 für die Spannelemente 21 kleiner zu halten als den Querschnitt der Verbindungsleitungen 26 für die Spannelemente 20. Eine andere Möglichkeit ist es, die Schläuche für die Spannelemente 21 mit einer geringeren Elastizität als die Schläuche für die Spannelemente 20 auszustatten. Dieser Sachverhalt ist in der Figur 2 dadurch verdeutlicht, dass die Schläuche für die Spannelemente 21 eine größere Strichbreite haben als die Schläuche für die Spannelemente 20. Beide vorgenannten Maßnahmen führen dazu, dass die Schläuche für die Spannelemente 21 bei kontinuierlicher Gaszufuhr langsamer expandieren als die Schläuche für die Spannelemente 20. Viele andere Drosselelemente sind denkbar.In order to clamp one or more winding sleeves on the winding shaft, a pressure is applied to the central compressed gas tube 27, which gas enters the tubes. These hoses 25 expand and thus press the tensioning elements 20, 21 outwards. In order to ensure that the tensioning elements 21 are actuated later than the tensioning elements 20 or that the tensioning elements 21 move more slowly than the tensioning elements 21, a throttle device is provided, which can be implemented in different ways. A simple possibility is to keep the relevant cross section of the connecting lines 26 for the tensioning elements 21 smaller than the cross section of the connecting lines 26 for the tensioning elements 20. Another possibility is to make the hoses for the tensioning elements 21 with a lower elasticity than the hoses for to equip the clamping elements 20. This fact is in the Figure 2 This makes it clear that the hoses for the tensioning elements 21 have a larger line width than the hoses for the tensioning elements 20. Both of the above-mentioned measures lead to the hoses for the tensioning elements 21 expanding more slowly than the hoses for the tensioning elements 20 with a continuous supply of gas. Many others Throttle elements are conceivable.

Zur verzögerten Bewegung der Spannelemente 21 sind auch andere oder zusätzliche Maßnahmen und Einrichtungen denkbar. So können die Spannelemente 21 mit einer Federkraft beaufschlagt werden, die zur Verschiebung dieser Spannelemente überwunden werden muss. Es können aber auch mechanische Stellmittel vorgesehen sein. So können zur Verschiebung der Stellelemente axial verlaufende Exzenterwellen vorgesehen sein. Diese können alle gleichzeitig verstellbar sein, die Exzentrizität für die Spannelemente 21 jedoch derart ausgestaltet sein, dass die Spannelemente 21 später als die Spannelemente 20 verfahren werden.Other or additional measures and devices are also conceivable for the delayed movement of the tensioning elements 21. Thus, the tensioning elements 21 can be acted upon by a spring force that has to be overcome in order to displace these tensioning elements. However, mechanical actuating means can also be provided. For example, axially extending eccentric shafts can be provided for displacing the adjusting elements. These can all be adjustable at the same time, but the eccentricity for the clamping elements 21 can be configured such that the clamping elements 21 are moved later than the clamping elements 20.

Der Wickelwellenkörper 2 kann bevorzugt auf die folgende Weise hergestellt werden. Zunächst wird ein rohrförmiger Grundkörper 28 hergestellt, wobei eines der folgenden, an sich bekannten Verfahren nutzbar ist: Pultrusionsverfahren, Wickelverfahren (filament winding) oder das Aufrollen von Gelegen aus faserverstärktem Kunststoff. Es kann auch eine Kombination dieser Verfahren genutzt werden. Anschließend werden die verbreiterten Nuten 24 in den Grundkörper 28 eingebracht, wonach das Außenrohr 29, vorteilhafterweise wieder unter Anwendung eines der aufgeführten Herstellverfahren, hergestellt wird. Sodann werden oberhalb der verbreiterten Nuten die Öffnungen 23 eingebracht, welche bevorzugt die Form von Langlöchern 30 (Figur 3) haben. Dabei sind mehrere Langlöcher in einer Reihe angeordnet, wobei der Abstand B von jeweils zwei Langlöchern bevorzugt im Bereich zwischen 50 und 200 mm liegt.The winding shaft body 2 can preferably be produced in the following manner. First, a tubular base body 28 is produced, one of which of the following, known processes can be used: pultrusion process, filament winding process or the rolling up of scrims made of fiber-reinforced plastic. A combination of these methods can also be used. The widened grooves 24 are then introduced into the base body 28, after which the outer tube 29 is produced, advantageously again using one of the production processes listed. Then the openings 23 are introduced above the widened grooves, which preferably take the form of elongated holes 30 ( Figure 3 ) to have. A number of elongated holes are arranged in a row, the distance B from two elongated holes preferably being in the range between 50 and 200 mm.

Nach dem Herstellen der Öffnungen 23 bzw. der Langlöcher 30 werden die Spannelemente 20, 21 und die Schläuche über eine offene Stirnseite der Wickelwelle 1 eingebracht, wobei die Spannelemente einzeln oder als Bestandteile einer in axialer Richtung verlaufenden Spannleiste vorliegen können.After the openings 23 or the elongated holes 30 have been produced, the tensioning elements 20, 21 and the hoses are introduced via an open end face of the winding shaft 1, wherein the tensioning elements can be present individually or as components of a tensioning strip running in the axial direction.

Die Figur 3 zeigt nun eine Abwicklung der Umfangsfläche 31 der Wickelwelle 1. Zu erkennen ist nun die reihenförmige Anordnung der Spannelemente 21 bzw. 20. Weiterhin ist ein Versatz der Spannelemente 20 gegenüber den Spannelementen 21 in axialer Richtung zu erkennen, wobei bevorzugt die Anzahl der Spannelemente 20 geringer ist als die Anzahl der Spannelemente 21, da an die Spannelemente 20 zur Vorzentrierung hinsichtlich der Kraftübertragung geringere Anforderungen zu stellen sind als an die Spannelemente 21 zum Verspannen.The Figure 3 now shows a development of the peripheral surface 31 of the winding shaft 1. The row-shaped arrangement of the tensioning elements 21 and 20 can now be seen. Furthermore, an offset of the tensioning elements 20 relative to the tensioning elements 21 in the axial direction can be seen, the number of tensioning elements 20 preferably being smaller is than the number of clamping elements 21, since less requirements are to be placed on the clamping elements 20 for pre-centering with regard to the power transmission than on the clamping elements 21 for clamping.

Jeweils zwei Spannelemente 20 oder zwei Spannelemente 21 sind mit einem Abstand B zueinander angeordnet. Bevorzugte Maße für diese Abstände wurden bereits in der allgemeinen Beschreibung angegeben. Bezugszeichenliste 1 Wickelwelle 2 Wickelwellenkörper 3 Zapfen 4 Lagerstelle 5 Lagerstelle 20 Spannelement 21 Spannelement 22 Verbreiterte Basis 23 Öffnung 24 Verbreiterte Nut 25 Schlauch 26 Verbindungsleitung 27 Druckgasrohr 28 Rohrförmiger Grundkörper 29 Außenrohr 30 Langloch 31 Umfangsfläche Two clamping elements 20 or two clamping elements 21 are arranged at a distance B from one another. Preferred dimensions for these distances have already been given in the general description. LIST OF REFERENCE NUMBERS 1 winding shaft 2 Winding shaft body 3 spigot 4 depository 5 depository 20 clamping element 21 clamping element 22 Broadened base 23 opening 24 Widened groove 25 tube 26 connecting line 27 Pressure gas pipe 28 Tubular body 29 outer tube 30 Long hole 31 peripheral surface

Claims (3)

  1. A winding shaft for receiving at least one winding core having a shaft body made of fiber-reinforced plastic, preferably CFRP,
    having at least two bearing points on at least one end of the winding shaft and radially displaceable clamping elements for clamping, holding and releasing the winding cores, characterized in
    that the winding shaft is designed to hold winding cores having an inside diameter of maximally 80 mm.
    that clamping elements (20) for the pre-centering of the winding core and clamping elements (21) for clamping the winding core are provided arranged alternately in the circumferential direction, wherein the clamping elements (20, 21) can be moved outwards in the radial direction of the winding shaft, wherein the clamping elements (20, 21) comprise a widened base (22) and are displaceable within openings (23), wherein the base (22) is displaceable within a widened groove (24), wherein the widened groove (24) serves as a path limitation,
    that tubes (25) are provided for the extension of the clamping elements, which tubes are inserted between the widened groove and the surface of the base (22) facing away from the respective clamping element (20, 21), which can be filled with a gas and can be pressurized, wherein all tubes (25) can be supplied with gas from a central pressurized gas pipe (27), wherein all tubes (25) are connected with a connecting line to the central pressurized gas pipe (27), and
    that a throttle device is provided or the clamping elements (21) for the clamping can be subjected to a spring force, in order to delay the movement of the clamping elements (21) for the clamping relative to the movement of the clamping elements (20) for the pre-centering.
  2. The winding shaft according to Claim 1,
    characterized in that
    on both ends of the winding shaft in each case at least two bearing points are provided.
  3. A method for clamping at least one winding core on a winding shaft according to Claim 1 or 2, in which initially the clamping elements (20) for the pre-centering are moved outwards beyond the outer circumferential surface of the winding shaft in the radial direction of the winding shaft up to a maximum of nine tenths of a millimeter below the nominal diameter of the winding core, so that a gap remains or a slightly touching contact exists between the clamping elements (20) for the pre-centering and the winding core, then clamping elements (21) for the clamping of the winding core are moved outwards.
EP16728311.8A 2015-06-09 2016-06-09 Winding shaft for receiving at least one winding core Active EP3307665B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL16728311T PL3307665T3 (en) 2015-06-09 2016-06-09 Winding shaft for receiving at least one winding core

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102015210567 2015-06-09
PCT/EP2016/063214 WO2016198549A1 (en) 2015-06-09 2016-06-09 Winding shaft for receiving at least one winding core

Publications (2)

Publication Number Publication Date
EP3307665A1 EP3307665A1 (en) 2018-04-18
EP3307665B1 true EP3307665B1 (en) 2020-01-08

Family

ID=56117723

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16728311.8A Active EP3307665B1 (en) 2015-06-09 2016-06-09 Winding shaft for receiving at least one winding core

Country Status (4)

Country Link
US (1) US10513410B2 (en)
EP (1) EP3307665B1 (en)
PL (1) PL3307665T3 (en)
WO (1) WO2016198549A1 (en)

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Publication number Priority date Publication date Assignee Title
IT202000023854A1 (en) * 2020-10-09 2022-04-09 Lamiflex Spa EXPANDING SHAFT WITH LOW INERTIA STRIPS AND RELATED MANUFACTURING PROCESS
CN113622086A (en) * 2021-07-22 2021-11-09 安徽创荣非织造有限公司 Non-glue cotton with antibacterial and health-care effects and production process thereof

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US3214109A (en) * 1963-06-12 1965-10-26 Amals Gjuteri Och Mek Nerkstad Drive spindle
SE306469B (en) * 1968-02-27 1968-11-25 Aeroshaft Ab
SE377319B (en) * 1972-05-19 1975-06-30 Aero Shaft Ab
FR2438694A1 (en) * 1978-10-13 1980-05-09 Rhone Poulenc Textile TEXTILE THREAD WINDING PIN
DE3425509A1 (en) 1984-07-11 1986-01-23 Ahlström Hanssen S.A., Schweighouse sur Moder Winding shaft
DE9113939U1 (en) 1991-11-08 1992-01-02 Deublin Gerätebau GmbH, 6234 Hattersheim Winding shaft
US5379964A (en) * 1993-08-10 1995-01-10 Addax, Inc. Composite expandable shaft
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EP0866017B1 (en) * 1997-03-21 2000-08-16 Schlumpf Ag Device for clamping a tube on a rotatingly driven tubular body
GB2329948B (en) * 1997-10-01 2002-03-13 Creative Patent Ltd A pneumatic shaft for the centering of a tube
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US6079662A (en) * 1999-03-31 2000-06-27 Tidland Corporation Slip shaft assembly having core axial position fixing mechanism
EP3057897A1 (en) * 2013-10-15 2016-08-24 Windmöller & Hölscher KG Winding shaft
JP6266808B2 (en) * 2014-04-22 2018-01-24 ザ プロクター アンド ギャンブル カンパニー Apparatus and method for loading materials used in the manufacture of absorbent articles

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Also Published As

Publication number Publication date
US10513410B2 (en) 2019-12-24
EP3307665A1 (en) 2018-04-18
US20180179019A1 (en) 2018-06-28
WO2016198549A1 (en) 2016-12-15
PL3307665T3 (en) 2020-06-29

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