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WO2015055726A1 - Winding device - Google Patents

Winding device Download PDF

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Publication number
WO2015055726A1
WO2015055726A1 PCT/EP2014/072136 EP2014072136W WO2015055726A1 WO 2015055726 A1 WO2015055726 A1 WO 2015055726A1 EP 2014072136 W EP2014072136 W EP 2014072136W WO 2015055726 A1 WO2015055726 A1 WO 2015055726A1
Authority
WO
WIPO (PCT)
Prior art keywords
web
winding
edges
winding device
folding
Prior art date
Application number
PCT/EP2014/072136
Other languages
German (de)
French (fr)
Inventor
Torsten Schmitz
Original Assignee
Windmöller & Hölscher Kg
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Windmöller & Hölscher Kg filed Critical Windmöller & Hölscher Kg
Priority to CN201480056993.2A priority Critical patent/CN105813962A/en
Priority to EP14786485.4A priority patent/EP3080023B1/en
Priority to US15/029,346 priority patent/US20160272455A1/en
Publication of WO2015055726A1 publication Critical patent/WO2015055726A1/en

Links

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
    • B65H35/00—Delivering articles from cutting or line-perforating machines; Article or web delivery apparatus incorporating cutting or line-perforating devices, e.g. adhesive tape dispensers
    • B65H35/02—Delivering articles from cutting or line-perforating machines; Article or web delivery apparatus incorporating cutting or line-perforating devices, e.g. adhesive tape dispensers from or with longitudinal slitters or perforators
    • 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
    • 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
    • B65H18/28—Wound package of webs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H45/00—Folding thin material
    • B65H45/12—Folding articles or webs with application of pressure to define or form crease lines
    • B65H45/22—Longitudinal folders, i.e. for folding moving sheet material parallel to the direction of movement
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H45/00—Folding thin material
    • B65H45/12—Folding articles or webs with application of pressure to define or form crease lines
    • B65H45/28—Folding in combination with cutting
    • 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
    • B65H2301/414—Winding
    • B65H2301/4143—Performing winding process
    • B65H2301/41432—Performing winding process special features of winding process
    • B65H2301/414322—Performing winding process special features of winding process oscillated winding, i.e. oscillating the axis of the winding roller or 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
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/40—Type of handling process
    • B65H2301/41—Winding, unwinding
    • B65H2301/414—Winding
    • B65H2301/4148—Winding slitting
    • 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
    • B65H2301/45—Folding, unfolding
    • 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
    • B65H2301/50—Auxiliary process performed during handling process
    • B65H2301/51—Modifying a characteristic of handled material
    • B65H2301/515—Cutting handled material
    • B65H2301/5155—Cutting handled material longitudinally
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2515/00—Physical entities not provided for in groups B65H2511/00 or B65H2513/00
    • B65H2515/50—Vibrations; Oscillations
    • 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
    • B65H2701/13—Parts concerned of the handled material
    • B65H2701/131—Edges
    • B65H2701/1315—Edges side edges, i.e. regarded in context of transport
    • 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
    • B65H2701/1752—Polymer film

Definitions

  • the invention relates to a winding device for winding a moving material web with at least one knife for separating the material web in the web direction into a plurality of partial material webs and with a folding device for folding over the edges of the partial material webs.
  • Such a winding device is known from US 8,221, 298 B2 and is used in particular for the winding of stretch films.
  • Stretch films serve to secure and package individual goods, for example on pallets.
  • the goods are wrapped with the stretch film, so that the goods are joined together using the self-adhesive stretch film. It has been found that the edges of stretch film are often the starting point for a film break during the Umwickeins on the pallet. Even slight damage to the edge of a stretch film roll can render it unusable, which is particularly critical in handheld film applications. Such damage occurs, for example, when the finished wound roll of a stretch film when transporting incorrectly or falls to the ground.
  • the stretch film becomes more resistant to damage by folding or folding the edges prior to being wound onto a roll and consequently has fewer breaks.
  • flipping the edges also causes the edges of the film roll to become impermissibly thick and hard in the case of edge-to-edge winding.
  • An essential finding of the invention is therefore to oscillate the cutter bar used for the benefit section transversely to the film direction.
  • the devices for folding over the edges after the benefit cut are either fixed to the same cutter bar and perform correspondingly the same oscillatory movement as the knife, or they are attached to a bar following the cutter bar, which performs an oscillatory movement synchronized with the cutter bar.
  • the folded edges on the resulting stationary winding are laid laterally and a winding with reduced edge structure is possible.
  • the stroke and frequency of the movement are adjustable here and can be adjusted as needed, depending on the web speed, film thickness and increasing roll diameter, so that an optimal edge geometry is created.
  • a variant consists in that one transfer device is provided per folded edge.
  • Each of these Umlegevoriquesen can be used either directly next to each other or in succession.
  • the devices for folding over the edges for starting to dive centrally into the cut - so then have an influence take both edges - and be changed in position or shape so that they only have influence on an edge when dipping by a suitable kinematics. This can be done for adjacent edges either simultaneously or sequentially.
  • Another variant of a transfer device is to produce a strip cut of several benefits and to suck. The strip cutout would then already made a distance between the two edges, which makes the separate folding of the respective edges possible. Compared with the prior art, the invention has numerous advantages.
  • the oscillating device comprises a driven belt to which the at least one blade is attached.
  • the belt may be an endless toothed belt which is moved by a gear driven by an electric motor.
  • the oscillating device comprises a knife bar driven by a linear motor, to which the at least one knife is fastened.
  • a control unit for controlling the oscillating device is also provided.
  • the control device can thus all possiblenesss concerned.
  • the thickness profile of the wound roll is constantly measured and depending on the measured thickness profile, the oscillating device is driven such that results in a uniform as possible thickness profile.
  • the invention can be applied particularly advantageously to the winding of stretch films which have been produced on a cast film installation or on a blown film installation. Further details and advantages of the invention will be described with reference to the accompanying drawings. In these show:
  • Fig. 1 shows a first embodiment of the invention
  • Fig. 2 shows a second embodiment of the invention.
  • Fig. 1 shows a first embodiment of the invention.
  • the material web 101 is a stretch film produced on a cast film system.
  • the stretch film 101 is transported in the direction 102 and thus reaches the knife bar 103.
  • the knife bar 103 is moved back and forth in the direction 104 by an oscillating device and has a total of 5 cutting knives 105.
  • a mixture 11 1 1 and 1 12 is formed left and right, which can be further processed for other purposes.
  • Behind the cutter bar 103 arise S-shaped strips 106, 107, 108 and 109, and approximately in the form as they are shown in Fig. 1.
  • the S-shaped edge does not have to be uniform.
  • the amplitude and frequency of the movement of the oscillating device may also be irregular.
  • the individual knives 105 are controlled individually and thus perform various movements.
  • Fig. 2 shows a second embodiment of the invention.
  • the material web 201 is again a stretch film produced on a cast film system.
  • the stretch film 201 is transported after its production in the direction 202 and thus reaches the cutter bar 203.
  • the cutter bar 203 is reciprocated by an oscillating device in the direction 204 and has a total of 3 cutting blades 205. Since the outermost edges are left untrimmed left and right, in contrast to the embodiment according to FIG. 1, no waste is produced.
  • Behind the cutter bar 203 arise S-shaped strips 206, 207, 208 and 209, and approximately in the form as they are shown in Fig. 2.
  • the S-shaped edge does not have to be uniform.
  • the amplitude and frequency of the movement of the oscillating device may also be irregular.
  • the individual knives 205 are controlled individually and thus perform various movements.
  • the outer strips 206 and 209 each have a straight and an S-shaped edge and are processed in this form for special purposes.

Landscapes

  • Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
  • Winding Of Webs (AREA)

Abstract

The invention relates to a winding device for winding a running web of material, having at least one cutter for slitting the web of material in the direction of the web into a plurality of web sections, and having a folding device for folding the edges of the web sections. In order to provide a winding device that allows winding a web of material with folded edges as easily as possible and without wrinkles, an oscillating device is provided, by means of which the at least one cutter can be moved transversely to the direction of the web.

Description

Wickelvorrichtung  winder
Die Erfindung betrifft eine Wickelvorrichtung zum Aufwickeln einer laufenden Materialbahn mit mindestens einem Messer zum Auftrennen der Materialbahn in Bahnrichtung in mehrere Teilmaterialbahnen und mit einer Faltvorrichtung zum Umlegen der Kanten der Teilmaterialbahnen. The invention relates to a winding device for winding a moving material web with at least one knife for separating the material web in the web direction into a plurality of partial material webs and with a folding device for folding over the edges of the partial material webs.
Eine derartige Wickelvorrichtung ist aus US 8,221 ,298 B2 bekannt und wird insbesondere für das Aufwickeln von Stretchfolien eingesetzt. Such a winding device is known from US 8,221, 298 B2 and is used in particular for the winding of stretch films.
Stretchfolien dienen zum Sichern und Verpacken von einzelnen Gütern, beispielsweise auf Paletten. Die Güter werden dabei mit der Stretchfolie umwickelt, sodass die Güter mithilfe der selbsthaftenden Stretchfolie miteinander verbunden werden. Es hat sich herausgestellt, dass die Ränder von Stretchfolien häufig Ausgangspunkt für einen Folienabriss während des Umwickeins auf die Palette sind. Schon leichte Beschädigungen der Kante einer Stretchfolienrolle können diese unbrauchbar machen, was insbesondere in Handfolienanwendungen kritisch ist. Derartige Beschädigungen entstehen beispielsweise dann, wenn die fertig aufgewickelte Rolle einer Stretchfolie beim Transport unsachgemäß aneckt oder zu Boden fällt. Stretch films serve to secure and package individual goods, for example on pallets. The goods are wrapped with the stretch film, so that the goods are joined together using the self-adhesive stretch film. It has been found that the edges of stretch film are often the starting point for a film break during the Umwickeins on the pallet. Even slight damage to the edge of a stretch film roll can render it unusable, which is particularly critical in handheld film applications. Such damage occurs, for example, when the finished wound roll of a stretch film when transporting incorrectly or falls to the ground.
Es ist weiterhin bekannt, dass die Stretchfolie durch ein Umlegen oder Falten der Ränder vor dem Aufwickeln auf eine Rolle resistenter gegenüber Beschädigungen wird und in der Folge weniger Abrisse aufweist. Allerdings führt ein Umlegen der Ränder auch dazu, dass die Kanten der Folienrolle bei kantengerader Wicklung unzulässig dick und hart werden. Beim Umlegen der Kanten ist es demzufolge erforderlich, die Ränder der Folie auf der Rolle zyklisch seitlich zu verlegen. Dies kann beispielsweise durch ein seitliches Oszillieren des Wickels oder mittels im Winkel beweglicher Leitwalzen nach dem Einzelnutzenschnitt erfolgen. It is also known that the stretch film becomes more resistant to damage by folding or folding the edges prior to being wound onto a roll and consequently has fewer breaks. However, flipping the edges also causes the edges of the film roll to become impermissibly thick and hard in the case of edge-to-edge winding. When folding the edges, it is therefore necessary to move the edges of the film on the roll side cyclically. This can be done for example by a lateral oscillation of the coil or by means of angularly movable guide rollers after the single-use section.
Das Reversieren bzw. Oszillieren der Folienbahn vor dem Aufwickeln kann allerdings wiederum Falten erzeugen, die ihrerseits die Funktion der Folie beeinträchtigen können. Hiervon ausgehend ist es Aufgabe der Erfindung, eine Wickelvorrichtung bereitzustellen, die ein möglichst einfaches und faltenfreies Aufwickeln einer Materialbahn mit umgeschlagenen Kanten ermöglicht. However, the reversing or oscillating of the film web before winding can in turn produce wrinkles, which in turn can impair the function of the film. On this basis, it is an object of the invention to provide a winding device that allows the simplest possible and wrinkle-free winding a web with folded edges.
Diese Aufgabe wird durch eine Oszilliervorrichtung gelöst, mit der das mindestens eine Messer quer zur Bahnrichtung bewegbar ist. This object is achieved by an oscillating device, with which the at least one knife is movable transversely to the web direction.
Eine wesentliche Erkenntnis der Erfindung besteht somit darin, den zum Nutzenschnitt verwendeten Messerbalken quer zur Folienrichtung zu oszillieren. Die Vorrichtungen zum Umlegen der Kanten nach dem Nutzenschnitt werden entweder am gleichen Messerbalken fixiert und führen entsprechend die gleiche oszillatorische Bewegung aus wie die Messer, oder sie werden an einem dem Messerbalken nachgeschalteten Balken befestigt, welcher eine mit dem Messerbalken synchronisierte oszillatorische Bewegung ausführt. Resultierend daraus werden die umgelegten Kanten auf dem entstehenden ortsfesten Wickel seitlich verlegt und eine Wicklung mit verringertem Kantenaufbau wird möglich. Hub und Frequenz der Bewegung sind hier einstellbar und können bei Bedarf in Abhängigkeit von Bahngeschwindigkeit, Foliendicke und wachsendem Rollendurchmesser so angepasst werden, dass eine optimale Kantengeometrie entsteht. An essential finding of the invention is therefore to oscillate the cutter bar used for the benefit section transversely to the film direction. The devices for folding over the edges after the benefit cut are either fixed to the same cutter bar and perform correspondingly the same oscillatory movement as the knife, or they are attached to a bar following the cutter bar, which performs an oscillatory movement synchronized with the cutter bar. As a result, the folded edges on the resulting stationary winding are laid laterally and a winding with reduced edge structure is possible. The stroke and frequency of the movement are adjustable here and can be adjusted as needed, depending on the web speed, film thickness and increasing roll diameter, so that an optimal edge geometry is created.
Für die nachfolgende Umlegevorrichtung zur Erzeugung der gefalteten Seitenkante gibt es verschiedene Varianten. Eine Variante besteht darin, dass pro umgelegter Kante jeweis eine Umlegevorrichtung vorgesehen ist. Jede dieser Umlegevorrichtungen können entweder unmittelbar nebeneinander oder hintereinander eingesetzt werden. Es ist auch denkbar, dass die Vorrichtungen zum Umlegen der Kanten zum Anfahren zentral in den Schnitt eintauchen - damit dann einen Einfluss auf beide Kanten nehmen - und beim Eintauchen durch eine geeignete Kinematik so in Lage oder Form verändert werden, dass sie nur noch Einfluss auf eine Kante nehmen . Dies kann für benachbarte Kanten entweder gleichzeitig oder nacheinander erfolgen . Eine andere Variante einer Umlegevorrichtung besteht darin, von mehreren Nutzen einen Streifenausschnitt herzustellen und abzusaugen. Durch den Streifenausschnitt wäre dann bereits eine Distanz zwischen den beiden Rändern hergestellt, was das separate Umlegen der jeweiligen Ränder möglich macht. Gegenüber dem Stand der Technik weist die Erfindung zahlreiche Vorteile auf. There are different variants for the subsequent transfer device for producing the folded side edge. A variant consists in that one transfer device is provided per folded edge. Each of these Umlegevorrichtungen can be used either directly next to each other or in succession. It is also conceivable that the devices for folding over the edges for starting to dive centrally into the cut - so then have an influence take both edges - and be changed in position or shape so that they only have influence on an edge when dipping by a suitable kinematics. This can be done for adjacent edges either simultaneously or sequentially. Another variant of a transfer device is to produce a strip cut of several benefits and to suck. The strip cutout would then already made a distance between the two edges, which makes the separate folding of the respective edges possible. Compared with the prior art, the invention has numerous advantages.
Die im Stand der Technik bekannten Methoden zur seitlichen Oszillierung der umgelegten Ränder sind häufig sehr aufwendig, da jeder einzelne der Nutzen individuell nach dem Nutzenschnitt oszilliert werden muss. Dazu sind zusätzliche Einrichtungen erforderlich, welche in der Regel teuer, aufwendig und wartungsintensiv sind. The methods known in the prior art for lateral oscillation of the folded edges are often very expensive, since each of the benefits must be individually oscillated after the benefit cut. For this purpose, additional facilities are required, which are usually expensive, expensive and maintenance-intensive.
Gemäß der erfindungsgemäßen Lösung gibt es außerdem keine Beschränkung hinsichtlich Nutzenbreite und Nutzenanzahl. In addition, according to the solution of the invention, there is no limitation on the utility width and the number of benefits.
Nach einer bevorzugten Ausführungsform ist vorgesehen, dass die Oszilliervorrichtung einen angetriebenen Riemen umfasst, an dem das mindestens eine Messer befestigt ist. Bei dem Riemen kann es sich beispielsweise um einen Endlos-Zahnriemen handeln, der über ein Zahnrad bewegt wird, der von einem Elektromotor angetrieben wird. According to a preferred embodiment it is provided that the oscillating device comprises a driven belt to which the at least one blade is attached. By way of example, the belt may be an endless toothed belt which is moved by a gear driven by an electric motor.
Nach einer weiteren bevorzugten Ausführungsform ist vorgesehen, dass die Oszilliervorrichtung einen von einem Linearmotor angetriebenen Messerbalken umfasst, an dem das mindestens eine Messer befestigt ist. According to a further preferred embodiment, it is provided that the oscillating device comprises a knife bar driven by a linear motor, to which the at least one knife is fastened.
Vorzugsweise ist außerdem eine Steuereinheit zum Ansteuern der Oszilliervorrichtung vorgesehen. Über die Steuervorrichtung können damit alle möglichen Bewegungsbzw. Schnittmuster vorgegeben werden. Insbesondere ist es auch denkbar, dass das Dickenprofil der aufgewickelten Rolle ständig gemessen wird und in Abhängigkeit vom gemessenen Dickenprofil die Oszilliervorrichtung derart angesteuert wird, dass sich ein möglichst gleichförmiges Dickenprofil ergibt. Die Erfindung lässt sich besonders vorteilhaft auf das Aufwickeln von Stretchfolien anwenden, die auf einer Gießfolienanlage oder auf einer einer Blasfolienanlage hergestellt wurden. Weitere Einzelheiten und Vorteile der Erfindung werden anhand der beigefügten Zeichnungen beschrieben. In diesen zeigen: Preferably, a control unit for controlling the oscillating device is also provided. About the control device can thus all possible Bewegungsbzw. Patterns are specified. In particular, it is also conceivable that the thickness profile of the wound roll is constantly measured and depending on the measured thickness profile, the oscillating device is driven such that results in a uniform as possible thickness profile. The invention can be applied particularly advantageously to the winding of stretch films which have been produced on a cast film installation or on a blown film installation. Further details and advantages of the invention will be described with reference to the accompanying drawings. In these show:
Fig. 1 eine erste Ausführungsform der Erfindung und Fig. 1 shows a first embodiment of the invention and
Fig. 2 eine zweite Ausführungsform der Erfindung. Fig. 2 shows a second embodiment of the invention.
Fig. 1 zeigt eine erste Ausführungsform der Erfindung. Bei der Materialbahn 101 handelt es sich um eine auf einer Gießfolienanlage hergestellte Stretchfolie. Fig. 1 shows a first embodiment of the invention. The material web 101 is a stretch film produced on a cast film system.
Die Stretchfolie 101 wird nach ihrer Herstellung in die Richtung 102 transportiert und gelangt damit an den Messerbalken 103. Der Messerbalken 103 wird durch eine Oszilliervorrichtung in die Richtung 104 hin- und herbewegt und weist insgesamt 5 Schneidmesser 105 auf. An den Rändern entsteht links und rechts jeweils ein Verschnitt 1 1 1 und 1 12, der für andere Zwecke weiterverarbeitet werden kann. Hinter dem Messerbalken 103 entstehen S-förmige Streifen 106, 107, 108 und 109, und zwar etwa in der Form, wie diese in Fig. 1 dargestellt sind. Der S-förmige Rand muss dabei keineswegs gleichförmig sein. Amplitude und Frequenz der Bewegung der Oszilliervorrichtung können auch unregelmäßig sein. Darüber hinaus ist es auch denkbar, dass die einzelnen Messer 105 einzeln angesteuert werden und somit verschiedene Bewegungen ausführen. After being manufactured, the stretch film 101 is transported in the direction 102 and thus reaches the knife bar 103. The knife bar 103 is moved back and forth in the direction 104 by an oscillating device and has a total of 5 cutting knives 105. At the edges, a mixture 11 1 1 and 1 12 is formed left and right, which can be further processed for other purposes. Behind the cutter bar 103 arise S-shaped strips 106, 107, 108 and 109, and approximately in the form as they are shown in Fig. 1. The S-shaped edge does not have to be uniform. The amplitude and frequency of the movement of the oscillating device may also be irregular. In addition, it is also conceivable that the individual knives 105 are controlled individually and thus perform various movements.
Fig. 2 zeigt eine zweite Ausführungsform der Erfindung. Bei der Materialbahn 201 handelt es sich wiederum um eine auf einer Gießfolienanlage hergestellte Stretchfolie. Die Stretchfolie 201 wird nach ihrer Herstellung in die Richtung 202 transportiert und gelangt damit an den Messerbalken 203. Der Messerbalken 203 wird durch eine Oszilliervorrichtung in die Richtung 204 hin- und herbewegt und weist insgesamt 3 Schneidmesser 205 auf. Da die äußersten Ränder links und rechts unbeschnitten gelassen werden, entsteht im Gegensatz zu der Ausführungsform gemäß Fig. 1 kein Verschnitt. Hinter dem Messerbalken 203 entstehen S-förmige Streifen 206, 207, 208 und 209, und zwar etwa in der Form, wie diese in Fig. 2 dargestellt sind. Der S-förmige Rand muss dabei keineswegs gleichförmig sein. Amplitude und Frequenz der Bewegung der Oszilliervorrichtung können auch unregelmäßig sein. Darüber hinaus ist es auch denkbar, dass die einzelnen Messer 205 einzeln angesteuert werden und somit verschiedene Bewegungen ausführen. Fig. 2 shows a second embodiment of the invention. The material web 201 is again a stretch film produced on a cast film system. The stretch film 201 is transported after its production in the direction 202 and thus reaches the cutter bar 203. The cutter bar 203 is reciprocated by an oscillating device in the direction 204 and has a total of 3 cutting blades 205. Since the outermost edges are left untrimmed left and right, in contrast to the embodiment according to FIG. 1, no waste is produced. Behind the cutter bar 203 arise S-shaped strips 206, 207, 208 and 209, and approximately in the form as they are shown in Fig. 2. The S-shaped edge does not have to be uniform. The amplitude and frequency of the movement of the oscillating device may also be irregular. Moreover, it is also conceivable that the individual knives 205 are controlled individually and thus perform various movements.
Die äußeren Streifen 206 und 209 weisen jeweils einen geraden und einen S-förmigen Rand auf und werden in dieser Form für spezielle Zwecke weiterverarbeitet. The outer strips 206 and 209 each have a straight and an S-shaped edge and are processed in this form for special purposes.

Claims

Patentansprüche claims
Wickelvorrichtung zum Aufwickeln einer laufenden Materialbahn mit mindestens einem Messer zum Auftrennen der Materialbahn in Bahnrichtung in mehrere Teilmaterialbahnen und mit einer Faltvorrichtung zum Umlegen der Kanten der Teilmaterialbahnen, gekennzeichnet durch eine Oszilliervorrichtung, mit der das mindestens eine Messer quer zur Bahnrichtung bewegbar ist. Winding device for winding a moving material web with at least one knife for separating the material web in the web direction into a plurality of partial material webs and with a folding device for folding over the edges of the partial material webs, characterized by an oscillating device, with which the at least one blade is movable transversely to the web direction.
Wickelvorrichtung nach Anspruch 1 , dadurch gekennzeichnet, dass die Oszilliervorrichtung einen angetriebenen Riemen umfasst, an dem das mindestens eine Messer befestigt ist. Winding device according to claim 1, characterized in that the oscillating device comprises a driven belt to which the at least one blade is attached.
Wickelvorrichtung nach Anspruch 1 , dadurch gekennzeichnet, dass die Oszilliervorrichtung einen von einem Linearmotor angetriebenen Messerbalken umfasst, an dem das mindestens eine Messer befestigt ist. Wickelvorrichtung nach einem der Ansprüche 1 - 3, gekennzeichnet durch eine Steuereinheit zum Ansteuern der Oszilliervorrichtung. Winding device according to claim 1, characterized in that the oscillating device comprises a driven by a linear motor cutter bar, on which the at least one knife is attached. Winding device according to one of claims 1 - 3, characterized by a control unit for driving the oscillating device.
Wickelvorrichtung nach einem der Ansprüche 1 - 4, dadurch gekennzeichnet, dass die Materialbahn eine auf einer Gießfolienanlage oder auf einer Blasfolienanlage hergestellte Stretchfolie ist. Winding device according to one of claims 1 - 4, characterized in that the material web is a stretch film produced on a cast film plant or on a blown film plant.
PCT/EP2014/072136 2013-10-15 2014-10-15 Winding device WO2015055726A1 (en)

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CN201480056993.2A CN105813962A (en) 2013-10-15 2014-10-15 Winding device
EP14786485.4A EP3080023B1 (en) 2013-10-15 2014-10-15 Winding device
US15/029,346 US20160272455A1 (en) 2013-10-15 2014-10-15 Winding device

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US20160272455A1 (en) 2016-09-22
EP3080023B1 (en) 2020-05-27
CN105813962A (en) 2016-07-27
EP3080023A1 (en) 2016-10-19

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