EP1990297B1 - Device for unwinding an endless web - Google Patents
Device for unwinding an endless web Download PDFInfo
- Publication number
- EP1990297B1 EP1990297B1 EP20080008318 EP08008318A EP1990297B1 EP 1990297 B1 EP1990297 B1 EP 1990297B1 EP 20080008318 EP20080008318 EP 20080008318 EP 08008318 A EP08008318 A EP 08008318A EP 1990297 B1 EP1990297 B1 EP 1990297B1
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- EP
- European Patent Office
- Prior art keywords
- roll
- conveying means
- accordance
- foregoing
- support
- 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.)
- Not-in-force
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H16/00—Unwinding, paying-out webs
- B65H16/10—Arrangements for effecting positive rotation of web roll
- B65H16/106—Arrangements for effecting positive rotation of web roll in which power is applied to web roll
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2301/00—Handling processes for sheets or webs
- B65H2301/30—Orientation, displacement, position of the handled material
- B65H2301/32—Orientation of handled material
- B65H2301/325—Orientation of handled material of roll of material
- B65H2301/3253—Orientation of handled material of roll of material inclined axis
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2301/00—Handling processes for sheets or webs
- B65H2301/40—Type of handling process
- B65H2301/41—Winding, unwinding
- B65H2301/413—Supporting web roll
- B65H2301/4137—Supporting web roll on its outer circumference
- B65H2301/4138—Supporting web roll on its outer circumference belt arrangement
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- 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
- B65H2701/174—Textile, fibre
Definitions
- EP-A-0 384 533 shows an unwinding device for paper rolls with the features of the preamble of claim 1.
- the support means comprises a second abutment means for the roller, which supports the roller radially and against which the roller slides in the circumferential direction during unwinding. In this way, a defined end stop is realized, which holds the role against the withdrawal direction in the operating position.
- the relevant tail can then be virtually "found” by itself and fed to further processing. Another manual intervention in the device is not required.
- the unwinding device or its support device for receiving a roll with a diameter preferably of up to 200 cm, in particular from 30 to 200 cm, in particular from 50 to 200 cm, in particular from 50 to 150 cm is formed.
- the unwinding device also comprises a particularly largely automated feeding device, by means of which new rolls can be fed from such a storage device into its operating position in the unwinding device.
- the invention further relates to a method having the features of claim 18.
- this method is carried out with endless webs having a relatively low basis weight and a relatively large volume, as indicated in particular in claims 24 and 25, this means that the entire Run length of the web per roll is relatively low, so that frequent role changes in the execution of the configuration process are required.
- the inventive method and the Device according to the invention particularly advantageous because they allow a roll change particularly simple and time-saving, either by an operator or a particularly simple trained automated device.
- the conveyor belt 8 or its plane 22 is inclined by 5 ° to 50 °, in particular by about 35-45 ° to the horizontal. This ensures that the roll remains in its operating position during unwinding, without the need for additional funds to be provided for this purpose.
- the device according to the invention requires no centric holding device in the form of a shaft or a mandrel on which the roller is held unrolled.
- FIG. 4 schematically the device 2 with a downstream of the unwinding processing machine 42 and the device 2 associated memory device 44 in which a plurality of roles are kept.
- a new roller 48 of the storage device 44 can be removed and, in the simplest case by way of example, supplied to the unwinding device 2 by a simple translatory process. Further indicated is still a remaining winding tube 50 of the previous role, which automatically rolls out through the opening 32.
Landscapes
- Advancing Webs (AREA)
- Replacement Of Web Rolls (AREA)
- Unwinding Webs (AREA)
- Absorbent Articles And Supports Therefor (AREA)
Description
Die Erfindung betrifft eine Vorrichtung zum Abwickeln einer Endlosbahn von einer Rolle im Zuge der Herstellung von absorbierenden Hygieneartikeln, Verbandstoffen, OP-Materialien oder Medizinprodukten, wobei die Endlosbahn einem Konfigurationsprozess zugeführt wird. Insbesondere kann es sich hierbei um eine Vorrichtung zum Abwickeln einer Wattebahn von einer sehr ausladenden Watterolle oder einer an sich beliebigen Faservliesbahn oder Schaumstoffbahn handeln.The invention relates to a device for unwinding a continuous web from a roll in the course of the production of absorbent hygiene articles, dressings, surgical materials or medical devices, wherein the endless web is fed to a configuration process. In particular, this may be a device for unwinding a wadding web from a very bulky cotton roll or any fibrous nonwoven web or foam web.
Auf dem hier in Rede stehenden Gebiet unterscheidet man sog. Zentrumsabwickelvorrichtungen und Umfangsabwickelvorrichtungen. Bei einer Zentrumsabwickelvorrichtung wird die Rolle im Zentrum gehalten und angetrieben und so die Materialbahn in Umfangsrichtung außen abgewickelt. Diese Vorrichtungen haben den großen Vorteil, dass die Spannung in der abgewickelten Bahn infolge des zentrischen Antriebs der Rolle durch separate Mittel den Anforderungen entsprechend eingestellt bzw. geregelt werden kann. Jedoch gestaltet sich hier die Steuerung bzw. Regelung des Abwickelprozesses schwierig, da ja vorzugsweise eine gleichbleibende Bahngeschwindigkeit erreicht werden sollte.In the field under discussion, a distinction is made between so-called center unwinding devices and peripheral unwinding devices. In a center unwinding device, the roller is held and driven in the center, thus unwinding the material web in the circumferential direction on the outside. These devices have the great advantage that the tension in the unwound web due to the central drive of the roll can be adjusted by separate means according to the requirements. However, here the control or regulation of the unwinding process is difficult, since preferably a constant web speed should be achieved.
Bei Umfangsabwickelvorrichtungen wird die Endlosbahn meist unter Spannung von der Rolle abgezogen. Hierbei ist die Rolle bislang auf einer Welle oder einem Dorn gelagert. Es sind auch Ausführungsformen bekannt geworden, bei dem eine weitere angetriebene Rolle oder Walze auf die abzuwickelnde Rolle abgesenkt wird und diese dann mit vorgegebener Umfangsgeschwindigkeit antreibt.In Umfangsabwickelvorrichtungen the endless web is usually removed under tension from the roll. Here, the role is currently stored on a shaft or a mandrel. Embodiments have also become known in which a further driven roller or roller is lowered onto the roll to be unwound and then drives it at a predetermined peripheral speed.
Im Zuge der laufenden Produktion von vorstehend genannten Artikeln stellt sich auch stets das Problem, dass eine abgewickelte Rolle durch eine neue ersetzt werden muss. Um dennoch eine durchgehende Endlosbahn zu erhalten, können die Bahnenden mittels eines sog. "Splicers" miteinander verbunden werden. Derartige Vorrichtung sind jedoch aufwendig.In the course of the ongoing production of the above-mentioned articles, there is always the problem that a unwound roll must be replaced by a new one. In order nevertheless to obtain a continuous web, the web ends can be connected to each other by means of a so-called "splicer". However, such a device is expensive.
Der vorliegenden Erfindung liegt die Aufgabe zugrunde, eine Vorrichtung und ein Verfahren zum Abwickeln einer Endlosbahn der gattungsgemäßen Art dahingehend zu verbessern, dass die Vorrichtung bzw. das Verfahren sehr einfach und kostengünstig ist und die Zeiten für einen Rollenwechsel so gering wie möglich gehalten werden können.The present invention has for its object to improve an apparatus and a method for unwinding a continuous web of the generic type to the effect that the device or the method very is simple and inexpensive and the times for a roll change can be kept as low as possible.
Diese Aufgabe wird erfindungsgemäß gelöst durch eine Vorrichtung mit den Merkmalen des Anspruchs 1.This object is achieved by a device having the features of claim 1.
Zum Beschicken der Vorrichtung mit einer neuen abzuwickelnden Rolle, wird diese Rolle einfach in die Vorrichtung eingelegt; sie muss also nicht mehr auf einer Welle oder einem Dorn positioniert werden, sie rutscht quasi von selbst schwerkraftbedingt in ihre Betriebsposition, wo sie dann durch die Stützeinrichtung gewissermaßen verliersicher, jedoch mit entsprechendem Spiel zum Abwickeln abrollbar gehalten ist. Die eigentliche Abzugsbewegung der Bahn wird ausgehend von dem Fördermittel eingeleitet, in dem das Fördermittel das Bahnende ergreift und in Förderrichtung bewegt, dabei rollt die Rolle gegen das Fördermittel ab und wird wiederum durch die Stützeinrichtung schwerkraftbedingt in der Betriebsposition gehalten. Die Neigung der Stützeinrichtung zur Vertikalen beträgt vorteilhafterweise 3 - 20°, insbesondere um 3 - 15° und weiter insbesondere um 3 - 10°.For loading the device with a new unwinding role, this role is simply inserted into the device; So she no longer needs to be positioned on a shaft or a thorn, it slips almost by gravity due to its operating position, where it is then held by the support means in a sense captive, but unrollable with appropriate game for unwinding. The actual withdrawal movement of the web is initiated by the conveyor, in which the conveyor engages the tail and moves in the conveying direction, while the roller rolls against the conveyor and in turn is held by the support means gravity in the operating position. The inclination of the support device to the vertical is advantageously 3 - 20 °, in particular by 3 - 15 ° and further in particular by 3 - 10 °.
Es erweist sich weiter als besonders vorteilhaft, dass zusätzlich das Fördermittel in Förderrichtung gegen die Horizontale nach oben geneigt ist, insbesondere um 5 - 50°, insbesondere um 10 - 45°, insbesondere um 10 - 40° und weiter insbesondere um 20 - 40°. Dies ist vorteilhaft, da solchenfalls die Rolle beim Abwickeln nicht durch weitere Mittel gegen die Förderrichtung gehalten zu werden braucht.It also proves to be particularly advantageous that in addition the conveyor is inclined in the conveying direction against the horizontal upwards, in particular by 5 - 50 °, in particular by 10 - 45 °, in particular by 10 - 40 ° and in particular around 20-40 °. This is advantageous because, in that case, the roll does not need to be held against the conveying direction by further means during unwinding.
Es erweist des Weiteren als Vorteilhaft, wenn die Stützeinrichtung ein erstes Anlagemittel für die Rolle aufweist, welches im wesentlichen senkrecht zu einer Ebene des Fördermittels erstreckt ist.It also proves to be advantageous if the support means comprises a first abutment means for the roller which is substantially perpendicular to a plane of the conveyor.
Die Stützeinrichtung könnte ansich beliebige Stützmittel aufweisen, um die Rolle mit ihrer Rollenebene zur Vertikalen geneigt zu stützen. Es erweist sich jedoch als zweckmäßig, wenn die Stützeinrichtung ein erstes Anlagemittel für die Rolle aufweist, welches eine im wesentlichen ebene Anlagefläche bildet. Solchenfalls ist der Druck und damit die Oberflächenreibung zwischen der Rolle und der Stützeinrichtung reduziert, und es können auch stark deformierte und teleskopierte Rollen abgewickelt werden.The support means could ansich have any support means to support the role inclined with its roller plane to the vertical. However, it proves to be expedient if the support device has a first attachment means for the roller, which forms a substantially planar contact surface. In such a case, the pressure and thus the surface friction between the roller and the support device is reduced, and it can also be handled severely deformed and telescoped rollers.
Des Weiteren erweist es sich als vorteilhaft, wenn die Stützeinrichtung ein zweites Anlagemittel für die Rolle aufweist, welches die Rolle radial stützt und gegen das die Rolle in Umfangsrichtung beim Abwickeln gleitet. Auf diese Weise ist ein definierter Endanschlag realisiert, welcher die Rolle entgegen der Abzugsrichtung in der Betriebsposition hält.Furthermore, it proves to be advantageous if the support means comprises a second abutment means for the roller, which supports the roller radially and against which the roller slides in the circumferential direction during unwinding. In this way, a defined end stop is realized, which holds the role against the withdrawal direction in the operating position.
Dieses zweite Anlagemittel ist vorteilhafterweise im wesentlichen senkrecht zu einer Ebene des Fördermittels und/oder zu dem ersten Anlagemittel erstreckt.This second attachment means is advantageously substantially perpendicular to a plane of the conveyor and / or extends to the first attachment means.
In weiterer Ausbildung der Erfindung von besonderer Bedeutung und Einfachheit ist eine dem ersten Anlagemittel gegenüberliegende Seite der Vorrichtung offen oder mit einer Öffnung ausgebildet, so dass eine Rolle im wesentlichen senkrecht zu ihrer Rollenebene in die Abwickelvorrichtung einsetzbar ist. Alternativ hierzu oder zusätzlich kann auch eine dem Fördermittel gegenüberliegende Seite der Vorrichtung offen oder mit einer Öffnung ausgebildet sein, so dass die Rolle im wesentlichen radial oder gewissermaßen von oben in ihre Betriebsposition in die Vorrichtung einsetzbar ist. Solchenfalls kann die Rolle über die Stützeinrichtung bzw. deren erstes Anlagemittel in ihre Betriebsposition gleiten.In a further embodiment of the invention of particular importance and simplicity of the first investment means opposite side of the device is open or with an opening formed so that a roller is inserted into the unwinding device substantially perpendicular to its roller plane. Alternatively or additionally, a side of the device opposite the conveying means may be open or provided with an opening, so that the roller can be inserted into the device essentially radially or, as it were, from above into its operating position. In this case, the roller can slide into its operating position via the support device or its first abutment means.
Das flächenhaft erstreckte Fördermittel kann in vorteilhafter Weise durch ein Förderband gebildet sein. Nach einem weiteren vorteilhaften Erfindungsgedanken wird die Transportverbindung der Endlosbahn zu dem Fördermittel bzw. Förderband dadurch erreicht, dass dieses mit Unterdruck beaufschlagt wird, so dass die Endlosbahn gegen das Fördermittel ansaugbar ist.The areally extended conveying means can be advantageously formed by a conveyor belt. According to a further advantageous concept of the invention, the transport connection of the continuous web to the conveying means or conveyor belt is achieved in that it is acted upon by negative pressure, so that the endless web can be sucked against the conveying means.
Das betreffende Bahnende kann dann quasi von selbst "gefunden" und der weiteren Verarbeitung zugeführt werden. Ein weiterer manueller Eingriff in die Vorrichtung ist nicht erforderlich.The relevant tail can then be virtually "found" by itself and fed to further processing. Another manual intervention in the device is not required.
Das flächenhaft erstreckte Fördermittel, insbesondere das Förderband, ist weiterhin in vorteilhafter Weise derart mit Unterdruck beaufschlagbar und so ausgebildet, dass die Endlosbahn nur durch das Fördermittel angetrieben, von der Rolle abwickelbar ist, wobei die Rolle gegen das Fördermittel abrollbar ist. Das Fördermittel kann in vorteilhafter Weise mit einer Geschwindigkeit von bis zu 100 m/min. insbesondere 50 bis 100 m/min antreibbar sein. Es weist vorteilhafterweise eine Breite quer zur Förderrichtung von 5 bis 150 cm, insbesondere von 20 -The areally extended conveying means, in particular the conveyor belt, can furthermore be subjected to negative pressure in such an advantageous manner and designed so that the endless web is driven only by the conveying means, can be unwound from the roll, wherein the roll can be unrolled against the conveying means. The conveyor can advantageously at a speed of up to 100 m / min. be drivable in particular 50 to 100 m / min. It advantageously has a width transversely to the conveying direction of 5 to 150 cm, in particular 20 -.
100 cm, insbesondere von 25 - 70 cm und weiter insbesondere von 25 - 60 cm auf.100 cm, in particular from 25 to 70 cm and more particularly from 25 to 60 cm.
Insgesamt ist die Abwickelvorrichtung bzw. deren Stützeinrichtung zur Aufnahme von einer Rolle mit einem Durchmesser vorzugsweise von bis zu 200 cm, insbesondere von 30 - 200 cm, insbesondere von 50 bis 200 cm, insbesondere von 50 - 150 cm ausgebildet. In Weiterbildung der Erfindung erweist es sich als vorteilhaft, wenn eine der Abwickelvorrichtung zugeordnete Speichervorrichtung für weitere Rollen vorgesehen ist. Vorzugsweise umfasst die Abwickelvorrichtung auch eine insbesondere weitgehend automatisierte Zuführvorrichtung, mittels derer neue Rollen aus einer solchen Speichervorrichtung in ihre Betriebsposition in der Abwickelvorrichtung zuführbar sind.Overall, the unwinding device or its support device for receiving a roll with a diameter preferably of up to 200 cm, in particular from 30 to 200 cm, in particular from 50 to 200 cm, in particular from 50 to 150 cm is formed. In a further development of the invention, it proves to be advantageous if one of the unwinding device associated storage device is provided for other roles. Preferably, the unwinding device also comprises a particularly largely automated feeding device, by means of which new rolls can be fed from such a storage device into its operating position in the unwinding device.
Insgesamt wird mit der erfindungsgemäßen Abwickelvorrichtung eine in bestechender Weise einfache und dennoch genau steuerbare Vorrichtung geschaffen, bei der keine komplizierten aufwendigen Steuer- und Regelkomponenten verwendet werden müssen. Neue Rollen werden in beliebiger Weise der Stützeinrichtung zugeführt; es muss lediglich die korrekte Orientierung der Rolle beachtet werden.Overall, with the unwinding device according to the invention, a captivatingly simple yet precisely controllable device is created, in which no complicated complex control and regulating components have to be used. New roles are fed in any way to the support means; only the correct orientation of the roll has to be considered.
Die Erfindung betrifft des Weiteren ein Verfahren mit den Merkmalen des Anspruchs 18. Wenn dieses Verfahren mit Endlosbahnen mit einem verhältnismäßig geringen Flächengewicht und einem verhältnismäßig großen Volumen, wie insbesondere in den Ansprüchen 24 und 25 angegeben, durchgeführt wird, so bedeutet dies, dass die gesamte Lauflänge der Bahn je Rolle verhältnismäßig gering ist, so dass häufige Rollenwechsel bei der Ausführung des Konfigurationsprozesses erforderlich sind. Gerade in diesem Fall erweist sich das erfindungsgemäße Verfahren und die erfindungsgemäße Vorrichtung als besonders vorteilhaft, da sie einen Rollenwechsel besonders einfach und zeitsparend ermöglichen, und zwar entweder durch eine Bedienperson oder eine besonders einfach ausgebildete automatisierte Vorrichtung.The invention further relates to a method having the features of claim 18. When this method is carried out with endless webs having a relatively low basis weight and a relatively large volume, as indicated in particular in
Insbesondere erweist es sich als vorteilhaft, wenn die Endlosbahn gegen das Fördermittel angesaugt wird, und weiter insbesondere wenn die Endlosbahn durch das Fördermittel schräg zur Horizontalen geneigt nach oben transportiert wird. Die Neigung zur Horizontalen beträgt dabei vorzugsweise 10 -45°, insbesondere 10 - 40° und weiter insbesondere 20 - 40°. Die Neigung zur Vertikalen beträgt vorzugsweise 3 - 20°, insbesondere 3 - 15° und weiter insbesondere 3 - 10°. Die Endlosbahn ist nach einer Ausführungsform der Erfindung von einer Faserlage, vorzugsweise von einem Vliesstoff, oder von einem Schaumstoff gebildet. Die Endlosbahn wird vorzugsweise mit einem Flächengewicht von 50 - 500 g/m2, insbesondere 100 - 400 g/m2, insbesondere 130 - 300 g/m2 zugeführt. Sie weist eine bevorzugte Dicke von 1,5 - 20 mm, insbesondere 2,0 - 15 mm, insbesondere 2,5 - 10 mm, jeweils gemessen bei einem Prüfdruck von 0,5 kPa, auf.In particular, it proves to be advantageous if the continuous web is sucked against the conveyor, and further in particular if the endless web is transported by the conveyor inclined to the horizontal inclined upwards. The inclination to the horizontal is preferably 10 -45 °, in particular 10 - 40 ° and more particularly 20 - 40 °. The inclination to the vertical is preferably 3 - 20 °, in particular 3 - 15 ° and more particularly 3 - 10 °. The continuous web is formed according to an embodiment of the invention of a fiber layer, preferably of a nonwoven fabric, or of a foam. The continuous web is preferably supplied with a basis weight of 50-500 g / m 2 , in particular 100-400 g / m 2 , in particular 130-300 g / m 2 . It has a preferred thickness of 1.5 to 20 mm, in particular 2.0 to 15 mm, in particular 2.5 to 10 mm, each measured at a test pressure of 0.5 kPa.
Weitere Merkmale, Einzelheiten und Vorteile der Erfindung ergeben sich aus den beigefügten Patentansprüchen und aus der zeichnerischen Darstellung und nachfolgenden Beschreibung einer bevorzugten Ausführungsform der erfindungsgemäßen Abwickelvorrichtung. In der Zeichnung zeigt:
- Figur 1
- eine perspektivische Ansicht einer erfindungsgemäßen Vorrichtung zum Abwickeln einer Endlosbahn;
Figur 2- eine Seitenansicht der Vorrichtung nach
Figur 1 mit Blick auf die Rollenebene; - Figur 3
- eine Ansicht in Richtung des Pfeils III in
;Figur 2 Figur 4- eine schematische Darstellung der Vorrichtung mit weiteren Komponenten.
- FIG. 1
- a perspective view of an apparatus according to the invention for unwinding a continuous web;
- FIG. 2
- a side view of the device according to
FIG. 1 overlooking the roller level; - FIG. 3
- a view in the direction of arrow III in
FIG. 2 ; - FIG. 4
- a schematic representation of the device with other components.
Die Figuren zeigen eine insgesamt mit dem Bezugszeichen 2 bezeichnete Vorrichtung zum Abwickeln einer Endlosbahn, insbesondere einer Wattebahn von einer Rolle 4.The figures show a device generally designated by the
Der Vorrichtung 2 nachgeordnet ist beispielsweise eine schnell laufende kontinuierlich bzw. endlos arbeitende Maschine zur Herstellung von Hygieneartikeln, bzw. Windeln, oder Verbandstoffen, OP-Materialien oder andere derartige Medizinprodukte. Die Vorrichtung 2 umfasst ein flächenhaft erstrecktes Fördermittel 6 in Form eines Förderbands 8.Subordinate to the
Das Förderband ist in nicht dargestellter Weise als Saugband ausgebildet und mit Unterdruck beaufschlagbar, so dass eine von der Rolle 4 abgezogene Endlosbahn 10 gegen das Förderband 8 derart angesaugt werden kann, dass hierdurch die zum Abwickeln von der Rolle 4 erforderliche Abzugskraft allein durch das Förderband 8 bereitgestellt bzw. ausgeübt wird.The conveyor belt is formed in a manner not shown as a suction belt and acted upon by negative pressure, so that withdrawn from the
Die Vorrichtung 2 umfasst des Weiteren eine insgesamt mit Bezugszeichen 12 bezeichnete Stützeinrichtung. Die Stützeinrichtung 12 umfasst ein erstes Anlagemittel 14, welches von einer im wesentlichen ebenen Anlagefläche 16 gebildet wird, gegen welche die Rolle 4 mit ihrer Rollenebene 18 anlegbar ist.The
Das erste Anlagemittel 14 bzw. die Anlagefläche 16 ist wie aus
Des Weiteren ist ein zweites Anlagemittel 24 für die Rolle 4 vorgesehen, gegen welches die Rolle radial abgestützt ist. Gegen dieses zweite Anlagemittel 24 gleitet die Rolle 4 in Umfangsrichtung beim Abwickeln der Endlosbahn 10. Auch das zweite Anlagemittel 24 ist von einer Anlagefläche 26 gebildet. Die Anlagefläche 26 ist im dargestellten Fall senkrecht zur Anlagefläche 16 und zur Ebene 22 des Förderbands 8 ausgebildet. Man erkennt ohne Weiteres, dass die Rolle lediglich fast beliebig in die Vorrichtung 2 eingelegt zu werden braucht und dann schwerkraftbedingt in die dargestellte korrekte Betriebsposition zum Abwickeln gleitet. Wird das mit Unterdruck beaufschlagbare Förderband 8 angetrieben, so rollt die Rolle 4 wiederum schwerkraftbedingt gegen das Förderband 8ab und rollt bzw. gleitet immer wieder in die korrekte Betriebsposition. Dabei wird automatisch das Bandende "gefunden", in dem es (lediglich die korrekte Orientierung der Rolle 4 vorausgesetzt) gegen das Förderband 8 angesaugt wird und dann zusammen mit dem Förderband 8 in Förderrichtung 28 bewegt wird.Furthermore, a second abutment means 24 is provided for the
Man erkennt des Weiteren, dass das Förderband 8 bzw. dessen Ebene 22 um 5° bis 50°, insbesondere um ca. 35 - 45° zur Horizontalen geneigt ist. Hierdurch wird erreicht, dass die Rolle beim Abwickeln in ihrer Betriebsposition verbleibt, ohne dass weitere Mittel hierfür vorgesehen werden müssten.It can be further seen that the conveyor belt 8 or its
Insbesondere benötigt die erfindungsgemäße Vorrichtung keine zentrische Haltevorrichtung in Form einer Welle oder eines Dorns, auf welcher die Rolle abrollbar gehalten ist.In particular, the device according to the invention requires no centric holding device in the form of a shaft or a mandrel on which the roller is held unrolled.
Sogar das Entfernen einer nicht dargestellten Wickelhülse im Zentrum der Rolle nach dem vollständigen Abwickeln erfolgt schwerkraftbedingt automatisch, in dem die Hülse durch eine Öffnung 32 (
Wird ein neuer Bahnanfang gegen das Förderband 8 angesaugt, so wird ein in
Schließlich zeigt
Claims (18)
- Device (2) for unwinding an endless web (10) from a roll (4) during the manufacture of absorbent hygienic articles, bandaging materials, surgical materials or medicinal products, whereby the endless web is fed into a configuration process comprising a broadly extended conveying means (6) for the endless web (10) and a support device (12) arranged by the conveying means (6) for the roll (4) which is formed such that the roll (4) is arranged with its rolling plane (18) angled to the vertical (20) and supported radially against the conveying means (6) and rolling against the conveying means (6) and is positioned in an operating position under gravity such that the endless web (10) is unwound,
characterised in that the conveying means (6) is tilted upwards to the horizontal (30) in the conveying direction (28). - Device in accordance with claim 1, characterised in that the support device (12) is formed in such a way that the roll (4) is tilted with its roll plane (18) by 3 - 20°, in particular by 3 - 15° and, further in particular by 3 - 10° to the vertical.
- Device in accordance with claim 1 or 2, characterised in that the conveying means (6) is tilted upwards by 5 - 50°, in particular by 10 - 45°, in particular by 10 - 40° and, further in particular by 20 - 40° to the horizontal (30) in the conveying direction (28).
- Device in accordance with claim 1, 2 or 3, characterised in that the support device (12) has a first support means (14) for the roll (4) which is extended essentially at right angles to a plane (22) of the conveying means (6).
- Device in accordance with one or more of the foregoing claims, characterised in that the support device (12) has a first support means (14) for the roll (4) which forms a support surface (16).
- Device in accordance with one or more of the foregoing claims, characterised in that the support device (12) has a second support means (24) for the roll (4) which supports the roll (4) radially and against which the roll slides at its periphery as it unwinds.
- Device in accordance with claim 6, characterised in that the second support means (24) is extended essentially at right angles to a plane (22) of the conveyor (6) and/or to the first support means (14).
- Device in accordance with one or more of the foregoing claims, characterised in that one side of the device opposite the first support means (14) is formed so that it is open or formed with an opening so that a roll (4) can be inserted into its operating position in the device essentially at right angles to its rolling plane (18).
- Device in accordance with one or more of the foregoing claims, characterised in that one side of the device opposite the conveying means (6) is formed so that it is open or formed with an opening so that a roll (4) can be inserted into its operating position in the device essentially radially or from above.
- Device in accordance with one or more of the foregoing claims, characterised in that the broadly extended conveying means (6) is a conveyor (8).
- Device in accordance with one or more of the foregoing claims, characterised in that a vacuum is applied to the broadly extended conveying means (6) so that the endless web is drawn against the conveying means (6).
- Device in accordance with claim 11, characterised in that the broadly extended conveying means (6) is formed such that, with a vacuum applied to it, the endless web can be unwound from the roll (4), driven only by the conveying means (6), whereby the roll (4) can be unrolled against the conveying means (6).
- Device in accordance with one or more of the foregoing claims, characterised in that the conveying means (6) can be driven at a speed of up to 100 m/min, in particular from 50 to 100 m/min.
- Device in accordance with one or more of the foregoing claims, characterised in that the width of the conveying means (6) transverse to the direction of travel (28) is 5 to 150 cm, in particular from 20 to 100 cm, in particular from 25 to 70 cm and further in particular from 25 to 60 cm.
- Device in accordance with one or more of the foregoing claims, characterised in that the support device (12) is formed to accept a roll (4) with a diameter of 50 - 200 cm, in particular up to 150 cm.
- Device in accordance with one or more of the foregoing claims, characterised by a dedicated storage device (44) for further rolls.
- Device in accordance with one or more of the foregoing claims, characterised by an, in particular, largely automated feed device (46), by means of which new rolls (48) can be fed from a storage device (44) into the operating position in the unwinding device.
- Device for unwinding an endless web (10) from a roll (4) during the manufacture of absorbent hygienic articles, bandaging materials, surgical materials or medicinal products of a similar nature, whereby the endless web is fed into a configuration process, whereby the endless web (10) is unrolled by a broadly extended conveying means (6) from the roll (4) and during which the roll (4), supported by a support device (12) arranged by the conveying means (6) with its rolling plane (18) angled to the vertical (20) and supported radially against the conveying means (6) is thereby positioned against the conveying means (6) to unwind the endless web as it unrolls under gravity in an operating position,
characterised in that the conveying means (6) is tilted upwards to the horizontal (30) in the conveying direction (28).
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200710021209 DE102007021209A1 (en) | 2007-05-05 | 2007-05-05 | Device for unwinding a continuous web |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1990297A2 EP1990297A2 (en) | 2008-11-12 |
EP1990297A3 EP1990297A3 (en) | 2009-07-15 |
EP1990297B1 true EP1990297B1 (en) | 2013-02-13 |
Family
ID=39596528
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20080008318 Not-in-force EP1990297B1 (en) | 2007-05-05 | 2008-05-02 | Device for unwinding an endless web |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP1990297B1 (en) |
DE (1) | DE102007021209A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102007025805A1 (en) * | 2007-06-02 | 2008-12-04 | Voith Patent Gmbh | Method of skinning a roll of a material web from a winding drum and apparatus for carrying out the method, in particular a skinning device |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3779473A (en) * | 1972-04-20 | 1973-12-18 | Hewlett Packard Co | Automatic paper loading and guiding mechanism |
GB2029804A (en) * | 1978-09-05 | 1980-03-26 | Marathon Knitwear Ltd | Unwinding and Feeding Webs |
JPH0228453A (en) * | 1988-07-18 | 1990-01-30 | Nec Data Terminal Ltd | Rolled paper feed device |
IT1228852B (en) * | 1989-02-22 | 1991-07-05 | Meschi Ind Grafica | UNWINDING DEVICE FOR PAPER REELS. |
JPH07251983A (en) * | 1994-03-11 | 1995-10-03 | Canon Aptecs Kk | Print medium feeding device, printer having the device, and print medium winding device |
DE19510327A1 (en) * | 1995-03-22 | 1996-09-26 | Helmut Schmidt | Device for rolling out, transporting and storing of round bale |
EP0873960B1 (en) * | 1997-04-14 | 2004-02-25 | Louis Zurfluh | Method and device for controlled winding or unwinding of an elongate product on or from a reel |
-
2007
- 2007-05-05 DE DE200710021209 patent/DE102007021209A1/en not_active Withdrawn
-
2008
- 2008-05-02 EP EP20080008318 patent/EP1990297B1/en not_active Not-in-force
Also Published As
Publication number | Publication date |
---|---|
DE102007021209A1 (en) | 2008-11-06 |
EP1990297A2 (en) | 2008-11-12 |
EP1990297A3 (en) | 2009-07-15 |
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