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EP4072981B1 - Winding device for winding a material web - Google Patents

Winding device for winding a material web Download PDF

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Publication number
EP4072981B1
EP4072981B1 EP20775827.7A EP20775827A EP4072981B1 EP 4072981 B1 EP4072981 B1 EP 4072981B1 EP 20775827 A EP20775827 A EP 20775827A EP 4072981 B1 EP4072981 B1 EP 4072981B1
Authority
EP
European Patent Office
Prior art keywords
oscillating device
winding
folding
oscillating
edges
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.)
Active
Application number
EP20775827.7A
Other languages
German (de)
French (fr)
Other versions
EP4072981A1 (en
Inventor
Matthias KÜKENSHÖNER
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
Original Assignee
Windmoeller and Hoelscher 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 Windmoeller and Hoelscher KG filed Critical Windmoeller and Hoelscher KG
Publication of EP4072981A1 publication Critical patent/EP4072981A1/en
Application granted granted Critical
Publication of EP4072981B1 publication Critical patent/EP4072981B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B65H18/00—Winding webs
    • B65H18/08—Web-winding mechanisms
    • B65H18/10—Mechanisms in which power is applied to web-roll spindle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/01—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work
    • B26D1/04—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a linearly-movable cutting member
    • B26D1/06—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a linearly-movable cutting member wherein the cutting member reciprocates
    • B26D1/065—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a linearly-movable cutting member wherein the cutting member reciprocates for thin material, e.g. for sheets, strips or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D5/00—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D5/02—Means for moving the cutting member into its operative position for cutting
    • B26D5/06—Means for moving the cutting member into its operative position for cutting by electrical means
    • 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
    • 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
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/01—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work
    • B26D1/04—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a linearly-movable cutting member
    • B26D1/06—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a linearly-movable cutting member wherein the cutting member reciprocates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D5/00—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than 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
    • B65H2301/41—Winding, unwinding
    • B65H2301/414—Winding
    • B65H2301/4148—Winding slitting
    • B65H2301/41485—Winding slitting winding on one single shaft or support
    • 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
    • B65H2301/41487—Winding slitting trimming edge
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2513/00—Dynamic entities; Timing aspects
    • B65H2513/10—Speed
    • 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
    • B65H2701/11—Dimensional aspect of article or web
    • B65H2701/112—Section geometry
    • B65H2701/1123—Folded article or web
    • B65H2701/11234—C-folded
    • 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
    • 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
    • B65H2701/19—Specific article or web
    • B65H2701/1944—Wrapping or packing material

Definitions

  • the invention relates to a winding device for winding a material web running in a running direction, with at least one knife for separating the material web in the web direction into several partial material webs and with a folding device for folding the edges of the partial material webs.
  • Stretch films are used to secure and package individual goods, for example bags stacked on pallets.
  • the goods are wrapped in stretch film so that the goods are connected to one another using the self-adhesive stretch film.
  • edges of stretch films are often the starting point for the film to tear during wrapping and packaging. Damage to the edges or the edge of a stretch film roll can render it unusable. Such damage occurs, for example, when the fully wound roll of stretch film is transported improperly or falls to the ground.
  • a winding device for winding up a running material web having at least one knife for separating the material web in the web direction into several partial material webs and having a folding device for folding the edges of the partial material webs.
  • the winding device comprises an oscillating device with which the at least one knife can be moved transversely to the web direction.
  • the folding units are arranged directly behind the knives and mechanically coupled to them. Folding units are used to fold the edges, which fold the two opposite edges of adjacent film webs together. It has been observed that wrinkles can form on the film, which in turn can impair the function of the film.
  • a folding element is provided for each edge of the partial material webs.
  • the at least one knife can be moved transversely to the running direction using a first oscillating device.
  • the folding elements for the left edges of the partial material webs, as seen in the running direction can be moved transversely to the running direction using a second oscillating device.
  • the folding elements for the right edges of the partial material webs, as seen in the running direction can be moved transversely to the running direction using a third oscillating device.
  • the first oscillating device, the second oscillating device and the third oscillating device can be controlled by a control unit in such a way that the folded edges of the partial material webs can be wound up in an offset manner.
  • the width of the folded edges can be adjusted with the winding device according to the invention. If the machine parameters change, the width of the folded edges can be kept constant by the control unit. In this way, the same number of film layers can always be wound up during one period of the oscillating knives, which can effectively reduce the formation of wrinkles on the film.
  • the first oscillating device, the second oscillating device and the third oscillating device each consist of an eccentric driven by a motor.
  • the frequencies of the first oscillating device, the second oscillating device and the third oscillating device can be adjusted separately via the control unit.
  • the strokes of the first oscillating device, the second oscillating device and the third oscillating device can be adjusted separately via the control unit.
  • the thickness profile of the wound roll is measured and transmitted to the control unit.
  • the web speed of the material web is measured and transmitted to the control unit.
  • the material web is a stretch film produced on a cast film line or on a blown film line.
  • Fig. 1 shows a basic representation of a knife bar according to a first embodiment of the invention.
  • the material web 101 is a stretch film produced on a cast film line.
  • 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 waste 111 and 112 is created on the left and right, which can be further processed for other purposes.
  • S-shaped strips 106, 107, 108 and 109 are formed, approximately in the form 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 can also be irregular.
  • the individual knives 105 are controlled individually and thus carry out different movements.
  • Fig. 2 shows a basic representation of a knife bar according to 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 in the direction 202 and thus reaches the knife bar 203.
  • the knife bar 203 is moved back and forth in the direction 204 by an oscillating device and has a total of 3 cutting knives 205. Since the outermost edges on the left and right are left uncut, in contrast to the embodiment according to Fig. 1 no waste.
  • S-shaped strips 206, 207, 208 and 209 are formed, approximately in the form 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 can also be irregular.
  • the individual knives 205 are controlled individually and thus carry out different movements.
  • the outer strips 206 and 209 each have a straight and an S-shaped edge and are further processed in this form for special purposes.
  • Fig. 3 shows a top view of a folding device according to the invention.
  • the folding device is located behind a knife bar, as seen in the running direction, for example as shown in Fig. 1 or according to Fig. 2
  • the folding device consists of a cross member 301, a first guide rail 302 and a second guide rail 303 are attached.
  • Four partial material webs 305, 306, 307 and 308 run in the running direction 304, which were previously separated on the knife bar 103 or 203 from a material web running over the entire width.
  • the folding device is designed in such a way that a folding element is provided for each edge of the partial material webs 305, 306, 307 and 308.
  • the folding elements 309, 310, 311 and 312 are slidably guided on the first guide rail 302, which thus fold the left edges of the partial material webs 305, 306, 307 and 308 as seen in the running direction 304.
  • the folding elements 313, 314, 315 and 316 are slidably guided on the second guide rail 303, which thus fold the right edges of the partial material webs 305, 306, 307 and 308 as seen in the running direction 304.
  • the folding elements 309, 310, 311 and 312 are connected to the gear rod 318, which is driven by an eccentric motor 317.
  • the folding elements 313, 314, 315 and 316 are connected to the gear rod 320, which is driven by an eccentric motor 319.
  • a first oscillating device has already been developed with reference to the knife bar 103 according to Fig. 1 or with reference to the cutter bar 203 according to Fig. 2 described.
  • the eccentric motor 317 also represents a second oscillating device with which the folding elements 309, 310, 311 and 312 for the left edges of the partial material webs as seen in the running direction 304 can be moved transversely to the running direction 304.
  • the eccentric motor 319 represents a third oscillating device with which the folding elements 313, 314, 315 and 316 for the right edges of the partial material webs as seen in the running direction 304 can be moved transversely to the running direction 304.
  • a rotary movement of the eccentric motor 317 is converted into a linear movement of the folding elements 309, 310, 311 and 312 transverse to the direction of travel 304.
  • the eccentric motor 317 does not rotate continuously, but performs an alternating partial rotation within a predetermined angle segment.
  • the stroke of the folding elements 309, 310, 311 and 312 can thus be adjusted using the opening angle of the angle segment.
  • the frequency of the alternating partial rotation corresponds to the movement frequency of the folding elements 309, 310, 311 and 312. If the lifting movements of the folding elements 309, 310, 311 and 312 and the folding elements 313, 314, 315 and 316 are carried out with an offset to one another, the width of the folded edge can be adjusted using this.
  • the frequency and stroke of the three oscillating units are coordinated by a control unit in such a way that the folded edges of the partial material webs can be wound up offset, thus avoiding the edge build-up mentioned above.
  • Fig. 4 shows a perspective view of view A according to Fig. 3 Identical parts are provided with the same reference numerals, so that in this respect reference is made to the description according to Fig. 3
  • the presentation in accordance with Fig. 4 It can be seen that each folding element has a controllable lifting cylinder, whereby for the sake of clarity Fig. 4 only the lifting cylinder of the folding element 313 is identified with the reference number 401.
  • the folding elements can be swung in or out with respect to the web path by means of the lifting cylinder. In this way, for example, the set-up time for a new order can be reduced by the operator being able to control the simultaneous swung in of several folding elements using a corresponding machine command. In addition, consequential damage in the event of faults can be avoided by the folding elements being automatically swung out of the web path when a fault is detected.

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  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)

Description

Die Erfindung betrifft eine Wickelvorrichtung zum Aufwickeln einer in einer Laufrichtung laufenden Materialbahn mit mindestens einem Messer zum Auftrennen der Materialbahn in Bahnrichtung in mehrere Teilmaterialbahnen und mit einer Umfaltvorrichtung zum Umfalten der Kanten der Teilmaterialbahnen.The invention relates to a winding device for winding a material web running in a running direction, with at least one knife for separating the material web in the web direction into several partial material webs and with a folding device for folding the edges of the partial material webs.

Stretchfolien dienen zum Sichern und Verpacken von einzelnen Gütern, beispielsweise von auf Paletten gestapelte Säcke. 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 Umwickelns und Verpackens sind. Beschädigungen an den Rändern bzw. an der Kante einer Stretchfolienrolle können diese unbrauchbar machen. Derartige Beschädigungen entstehen beispielsweise dann, wenn die fertig aufgewickelte Rolle einer Stretchfolie unsachgemäß transportiert wird oder zu Boden fällt.Stretch films are used to secure and package individual goods, for example bags stacked on pallets. The goods are wrapped in stretch film so that the goods are connected to one another using the self-adhesive stretch film. It has been found that the edges of stretch films are often the starting point for the film to tear during wrapping and packaging. Damage to the edges or the edge of a stretch film roll can render it unusable. Such damage occurs, for example, when the fully wound roll of stretch film is transported improperly or falls to the ground.

Es ist bekannt, dass die Stretchfolie durch ein Umfalten oder Falten der Ränder vor dem Aufwickeln auf eine Rolle resistenter gegenüber Beschädigungen wird und in der Folge weniger Abrisse auftreten. Allerdings führt ein Umfalten der Ränder auch dazu, dass bei kantengerader Wicklung der Folienrolle ein Kantenaufbau entsteht, der die Folienrolle ebenfalls unbrauchbar werden lässt. Beim Umfalten der Kanten ist es demzufolge erforderlich, die Ränder der Folie auf der Rolle versetzt zueinander zu aufzuwickeln. Dies kann beispielsweise durch ein seitliches Oszillieren des Wickels erfolgen.It is known that by folding or folding the edges before winding onto a roll, stretch film becomes more resistant to damage and, as a result, fewer tears occur. However, folding the edges also leads to an edge build-up when the film roll is wound straight, which also renders the film roll unusable. When folding the edges, it is therefore necessary to to be wound on the roll offset from one another. This can be done, for example, by oscillating the roll sideways.

Aus US 8,221,298 B2 ist eine Vorrichtung zum Herstellen von umgefalteten Kanten einer Kunststoff-Folie bekannt, wobei hinter jedem Messer ein Umfaltelement vorgesehen ist und wobei jedes Umfaltelement zwei umgefaltete Kanten erzeugt.Out of US 8,221,298 B2 A device for producing folded edges of a plastic film is known, wherein a folding element is provided behind each knife and wherein each folding element produces two folded edges.

Aus WO 2015/055726 A1 ist 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 Umfalten der Kanten der Teilmaterialbahnen bekannt. Die Wickelvorrichtung umfasst eine Oszilliervorrichtung, mit der das mindestens eine Messer quer zur Bahnrichtung bewegbar ist.Out of WO 2015/055726 A1 A winding device for winding up a running material web is known, having at least one knife for separating the material web in the web direction into several partial material webs and having a folding device for folding the edges of the partial material webs. The winding device comprises an oscillating device with which the at least one knife can be moved transversely to the web direction.

Aus EP 2 952 459 B1 ist eine Vorrichtung und ein Verfahren zur Herstellung einer Anzahl aufgewickelter Folienrollen bekannt, wobei die Folien in ihrem Randbereich durch Umfalten verstärkt sind. Die seitlichen Endabschnitte zweier nebeneinander angeordneter Folienabschnitte werden dabei mittels zweier benachbarter Umfaltelemente umgefaltet.Out of EP 2 952 459 B1 A device and a method for producing a number of wound film rolls are known, wherein the films are reinforced in their edge region by folding. The lateral end sections of two film sections arranged next to one another are folded by means of two adjacent folding elements.

Bei den bekannten Wickelvorrichtungen sind die Falteinheiten direkt hinter den Messern angeordnet und mechanisch mit ihnen gekoppelt. Zum Falten der Kanten werden Falteinheiten eingesetzt, die die beiden gegenüberliegenden Kanten von benachbarten Folienbahnen gemeinsam umfalten. Hierbei wurde beobachtet, dass auf der Folie Falten entstehen können, die ihrerseits die Funktion der Folie beeinträchtigen können.In the known winding devices, the folding units are arranged directly behind the knives and mechanically coupled to them. Folding units are used to fold the edges, which fold the two opposite edges of adjacent film webs together. It has been observed that wrinkles can form on the film, which in turn can impair the function of the film.

Hiervon ausgehend ist es Aufgabe der Erfindung, eine Wickelvorrichtung bereitzustellen, die ein möglichst faltenfreies Aufwickeln einer Materialbahn mit umgefalteten Kanten ermöglicht.Based on this, it is the object of the invention to provide a winding device which enables a material web with folded edges to be wound up as crease-free as possible.

Diese Aufgabe wird durch eine Wickelvorrichtung nach dem Patentanspruch 1 gelöst. Bevorzugte Ausführungsformen ergeben sich aus den Unteransprüchen.This object is achieved by a winding device according to patent claim 1. Preferred embodiments emerge from the subclaims.

Erfindungsgemäß ist für jede Kante der Teilmaterialbahnen ein Umfaltelement vorgesehen. Mit einer ersten Oszilliervorrichtung ist das mindestens eine Messer quer zur Laufrichtung bewegbar. Mit einer zweiten Oszilliervorrichtung sind die Umfaltelemente für die in Laufrichtung gesehen linken Kanten der Teilmaterialbahnen quer zur Laufrichtung bewegbar. Mit einer dritten Oszilliervorrichtung sind die Umfaltelemente für die in Laufrichtung gesehen rechten Kanten der Teilmaterialbahnen quer zur Laufrichtung bewegbar. Mit einer Steuereinheit sind die erste Oszilliervorrichtung, die zweite Oszilliervorrichtung und die dritte Oszilliervorrichtung derart ansteuerbar, dass die umgefalteten Kanten der Teilmaterialbahnen versetzt aufwickelbar sind.According to the invention, a folding element is provided for each edge of the partial material webs. The at least one knife can be moved transversely to the running direction using a first oscillating device. The folding elements for the left edges of the partial material webs, as seen in the running direction, can be moved transversely to the running direction using a second oscillating device. The folding elements for the right edges of the partial material webs, as seen in the running direction, can be moved transversely to the running direction using a third oscillating device. The first oscillating device, the second oscillating device and the third oscillating device can be controlled by a control unit in such a way that the folded edges of the partial material webs can be wound up in an offset manner.

Im Gegensatz zu den bekannten Wickelvorrichtungen ist mit der erfindungsgemäßen Wickelvorrichtung die Breite der umgefalteten Kanten einstellbar. Bei sich ändernden Maschinenparametern kann in entsprechender Weise die Breite der umgefalteten Kanten von der Steuereinheit konstant gehalten werden. Auf diese Weise kann immer die gleiche Anzahl an Folienlagen während einer Periode der oszillierenden Messer aufgewickelt werden, wodurch die Entstehung von Falten auf der Folie wirksam reduziert werden kann.In contrast to the known winding devices, the width of the folded edges can be adjusted with the winding device according to the invention. If the machine parameters change, the width of the folded edges can be kept constant by the control unit. In this way, the same number of film layers can always be wound up during one period of the oscillating knives, which can effectively reduce the formation of wrinkles on the film.

Nach einer bevorzugten Ausführungsform ist vorgesehen, dass die erste Oszilliervorrichtung, die zweite Oszilliervorrichtung und die dritte Oszilliervorrichtung jeweils aus einem von einem Motor angetriebenen Exzenter bestehen.According to a preferred embodiment, the first oscillating device, the second oscillating device and the third oscillating device each consist of an eccentric driven by a motor.

Nach einer weiteren bevorzugten Ausführungsform ist vorgesehen, dass über die Steuereinheit die Frequenzen der ersten Oszilliervorrichtung, der zweiten Oszilliervorrichtung und der dritten Oszilliervorrichtung getrennt einstellbar sind.According to a further preferred embodiment, it is provided that the frequencies of the first oscillating device, the second oscillating device and the third oscillating device can be adjusted separately via the control unit.

Nach einer weiteren bevorzugten Ausführungsform ist vorgesehen, dass über die Steuereinheit die Hübe der ersten Oszilliervorrichtung, der zweiten Oszilliervorrichtung und der dritten Oszilliervorrichtung getrennt einstellbar sind.According to a further preferred embodiment, it is provided that the strokes of the first oscillating device, the second oscillating device and the third oscillating device can be adjusted separately via the control unit.

Nach einer weiteren bevorzugten Ausführungsform ist vorgesehen, dass das Dickenprofil der aufgewickelten Rolle gemessen und an die Steuereinheit weitergeleitet wird.According to a further preferred embodiment, the thickness profile of the wound roll is measured and transmitted to the control unit.

Nach einer weiteren bevorzugten Ausführungsform ist vorgesehen, dass die Bahngeschwindigkeit der Materialbahn gemessen und an die Steuereinheit weitergeleitet wird.According to a further preferred embodiment, the web speed of the material web is measured and transmitted to the control unit.

Nach einer weiteren bevorzugten Ausführungsform ist vorgesehen, dass die Materialbahn eine auf einer Gießfolienanlage oder auf einer Blasfolienanlage hergestellte Stretchfolie ist.According to a further preferred embodiment, the material web is a stretch film produced on a cast film line or on a blown film line.

Weitere Einzelheiten und Vorteile der Erfindung werden anhand der beigefügten Zeichnungen beschrieben.

Fig. 1
zeigt eine prinzipielle Darstellung eines Messerbalkens gemäß einer ersten Ausführungsform der Erfindung,
Fig. 2
zeigt eine prinzipielle Darstellung eines Messerbalkens gemäß einer zweiten Ausführungsform der Erfindung,
Fig. 3
zeigt eine Draufsicht einer erfindungsgemäßen Umfaltvorrichtung und
Fig. 4
zeigt eine perspektivische Darstellung der Ansicht A gemäß Fig. 3.
Further details and advantages of the invention are described with reference to the accompanying drawings.
Fig. 1
shows a basic representation of a knife bar according to a first embodiment of the invention,
Fig. 2
shows a basic representation of a knife bar according to a second embodiment of the invention,
Fig. 3
shows a plan view of a folding device according to the invention and
Fig. 4
shows a perspective view of view A according to Fig. 3 .

Fig. 1 zeigt eine prinzipielle Darstellung eines Messerbalkens gemäß einer ersten Ausführungsform der Erfindung. Bei der Materialbahn 101 handelt es sich um eine auf einer Gießfolienanlage hergestellte Stretchfolie. Fig. 1 shows a basic representation of a knife bar according to a first embodiment of the invention. The material web 101 is a stretch film produced on a cast film line.

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 111 und 112, der für andere Zwecke weiterverarbeitet werden kann.After its production, 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 waste 111 and 112 is created on the left and right, which can be further processed for other purposes.

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.Behind the knife bar 103, S-shaped strips 106, 107, 108 and 109 are formed, approximately in the form 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 can also be irregular. In addition, it is also conceivable that the individual knives 105 are controlled individually and thus carry out different movements.

Fig. 2 zeigt eine prinzipielle Darstellung eines Messerbalkens gemäß einer zweiten Ausführungsform der Erfindung. Bei der Materialbahn 201 handelt es sich wiederum um eine auf einer Gießfolienanlage hergestellte Stretchfolie. Fig. 2 shows a basic representation of a knife bar according to a second embodiment of the invention. The material web 201 is again a stretch film produced on a cast film system.

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.After its production, the stretch film 201 is transported in the direction 202 and thus reaches the knife bar 203. The knife bar 203 is moved back and forth in the direction 204 by an oscillating device and has a total of 3 cutting knives 205. Since the outermost edges on the left and right are left uncut, in contrast to the embodiment according to Fig. 1 no waste.

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.Behind the knife bar 203, S-shaped strips 206, 207, 208 and 209 are formed, approximately in the form 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 can also be irregular. In addition, it is also conceivable that the individual knives 205 are controlled individually and thus carry out different 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 further processed in this form for special purposes.

Fig. 3 zeigt eine Draufsicht einer erfindungsgemäßen Umfaltvorrichtung. Die Umfaltvorrichtung befindet sich in Laufrichtung gesehen hinter einem Messerbalken, zum Beispiel wie dieser gemäß Fig. 1 oder gemäß Fig. 2 beschrieben wurde. Die Umfaltvorrichtung besteht aus einer Traverse 301, an eine erste Führungsschiene 302 und eine zweite Führungsschiene 303 befestigt sind. In Laufrichtung 304 laufen vier Teilmaterialbahnen 305, 306, 307 und 308, die zuvor an dem Messerbalken 103 bzw. 203 aus einer über die gesamte Breite laufenden Materialbahn aufgetrennt wurden. Fig. 3 shows a top view of a folding device according to the invention. The folding device is located behind a knife bar, as seen in the running direction, for example as shown in Fig. 1 or according to Fig. 2 The folding device consists of a cross member 301, a first guide rail 302 and a second guide rail 303 are attached. Four partial material webs 305, 306, 307 and 308 run in the running direction 304, which were previously separated on the knife bar 103 or 203 from a material web running over the entire width.

Die Umfaltvorrichtung ist derart ausgestaltet, dass für jede Kante der Teilmaterialbahnen 305, 306, 307 und 308 ein Umfaltelement vorgesehen ist. An der ersten Führungsschiene 302 sind die Umfaltelemente 309, 310, 311 und 312 verschieblich geführt, die somit die in Laufrichtung 304 gesehen die linken Kanten der Teilmaterialbahnen 305, 306, 307 und 308 umfalten. In entsprechender Weise sind an der zweiten Führungsschiene 303 die Umfaltelemente 313, 314, 315 und 316 verschieblich geführt, die somit die in Laufrichtung 304 gesehen die rechten Kanten der Teilmaterialbahnen 305, 306, 307 und 308 umfalten.The folding device is designed in such a way that a folding element is provided for each edge of the partial material webs 305, 306, 307 and 308. The folding elements 309, 310, 311 and 312 are slidably guided on the first guide rail 302, which thus fold the left edges of the partial material webs 305, 306, 307 and 308 as seen in the running direction 304. In a corresponding manner, the folding elements 313, 314, 315 and 316 are slidably guided on the second guide rail 303, which thus fold the right edges of the partial material webs 305, 306, 307 and 308 as seen in the running direction 304.

Die Umfaltelemente 309, 310, 311 und 312 sind mit der Getriebestange 318 verbunden, die von einem Exzentermotor 317 angetrieben wird. In entsprechender Weise sind die Umfaltelemente 313, 314, 315 und 316 mit der Getriebestange 320 verbunden, die von einem Exzentermotor 319 angetrieben wird.The folding elements 309, 310, 311 and 312 are connected to the gear rod 318, which is driven by an eccentric motor 317. In a corresponding manner, the folding elements 313, 314, 315 and 316 are connected to the gear rod 320, which is driven by an eccentric motor 319.

Eine erste Oszilliervorrichtung wurde bereits mit Bezug auf den Messerbalken 103 gemäß Fig. 1 bzw. mit Bezug auf den Messerbalken 203 gemäß Fig. 2 beschrieben. Der Exzentermotor 317 stellt darüber hinaus eine zweite Oszilliervorrichtung dar, mit der die Umfaltelemente 309, 310, 311 und 312 für die in Laufrichtung 304 gesehen linken Kanten der Teilmaterialbahnen quer zur Laufrichtung 304 bewegbar sind. In entsprechender Weise stellt der Exzentermotor 319 eine dritte Oszilliervorrichtung dar, mit der die Umfaltelemente 313, 314, 315 und 316 für die in Laufrichtung 304 gesehen rechten Kanten der Teilmaterialbahnen quer zur Laufrichtung 304 bewegbar sind.A first oscillating device has already been developed with reference to the knife bar 103 according to Fig. 1 or with reference to the cutter bar 203 according to Fig. 2 described. The eccentric motor 317 also represents a second oscillating device with which the folding elements 309, 310, 311 and 312 for the left edges of the partial material webs as seen in the running direction 304 can be moved transversely to the running direction 304. In a corresponding manner, the eccentric motor 319 represents a third oscillating device with which the folding elements 313, 314, 315 and 316 for the right edges of the partial material webs as seen in the running direction 304 can be moved transversely to the running direction 304.

Im Folgenden wird die Funktionsweise der zweiten Oszilliervorrichtung beschrieben. Entsprechendes gilt auch für die dritte Oszilliervorrichtung.The functionality of the second oscillation device is described below. The same applies to the third oscillation device.

Eine Drehbewebung des Exzentermotors 317 wird in eine Linearbewegung der Umfaltelemente 309, 310, 311 und 312 quer zur Laufrichtung 304 umgesetzt. Der Exzentermotor 317 läuft dabei nicht kontinuierlich um, sondern führt eine wechselnde Teildrehung innerhalb eines vorgegebenen Winkelsegments aus. Mit dem Öffnungswinkel des Winkelsegments kann damit der Hub der Umfaltelemente 309, 310, 311 und 312 eingestellt werden. Weiterhin entspricht die Frequenz der wechselnden Teildrehung der Bewegungsfrequenz der Umfaltelemente 309, 310, 311 und 312. Werden die Hubbewegungen der Umfaltelemente 309, 310, 311 und 312 sowie der Umfaltelemente 313, 314, 315 und 316 mit einem Offset zueinander ausgeführt, kann darüber die Breite der umgefalteten Kante eingestellt werden.A rotary movement of the eccentric motor 317 is converted into a linear movement of the folding elements 309, 310, 311 and 312 transverse to the direction of travel 304. The eccentric motor 317 does not rotate continuously, but performs an alternating partial rotation within a predetermined angle segment. The stroke of the folding elements 309, 310, 311 and 312 can thus be adjusted using the opening angle of the angle segment. Furthermore, the frequency of the alternating partial rotation corresponds to the movement frequency of the folding elements 309, 310, 311 and 312. If the lifting movements of the folding elements 309, 310, 311 and 312 and the folding elements 313, 314, 315 and 316 are carried out with an offset to one another, the width of the folded edge can be adjusted using this.

Frequenz und Hub der drei Oszilliereinheiten werden durch eine Steuereinheit derart aufeinander abgestimmt, dass die umgefalteten Kanten der Teilmaterialbahnen versetzt aufwickelbar sind, sodass der oben erwähnte Kantenaufbau vermieden wird.The frequency and stroke of the three oscillating units are coordinated by a control unit in such a way that the folded edges of the partial material webs can be wound up offset, thus avoiding the edge build-up mentioned above.

Fig. 4 zeigt eine perspektivische Darstellung der Ansicht A gemäß Fig. 3. Gleiche Teile sind mit gleichen Bezugszeichen versehen, sodass insoweit auf die Beschreibung gemäß Fig. 3 verwiesen wird. Darüber hinaus ist in der Darstellung gemäß Fig. 4 zu erkennen, dass jedes Umfaltelement einen ansteuerbaren Hubzylinder aufweist, wobei der Übersichtlichkeit halber in Fig. 4 nur der Hubzylinder von dem Umfaltelement 313 mit dem Bezugszeichen 401 gekennzeichnet ist. Mittels des Hubzylinders können die Umfaltelemente jeweils mit Bezug auf den Bahnweg hineingeschwenkt bzw. herausgeschwenkt werden. Auf diese Weise lässt sich beispielsweise die Rüstzeit für einen neuen Auftrag verringern, indem der Bediener das gleichzeitige Hineinschwenken mehrerer Umfaltelemente über einen entsprechenden Maschinenbefehl steuern kann. Außerdem können Folgeschäden bei Störungen vermieden werden, indem die Umfaltelemente bei Erkennen einer Störung automatisch aus dem Bahnweg herausgeschwenkt werden. Fig. 4 shows a perspective view of view A according to Fig. 3 Identical parts are provided with the same reference numerals, so that in this respect reference is made to the description according to Fig. 3 In addition, the presentation in accordance with Fig. 4 It can be seen that each folding element has a controllable lifting cylinder, whereby for the sake of clarity Fig. 4 only the lifting cylinder of the folding element 313 is identified with the reference number 401. The folding elements can be swung in or out with respect to the web path by means of the lifting cylinder. In this way, for example, the set-up time for a new order can be reduced by the operator being able to control the simultaneous swung in of several folding elements using a corresponding machine command. In addition, consequential damage in the event of faults can be avoided by the folding elements being automatically swung out of the web path when a fault is detected.

Claims (8)

  1. Winding device for winding a material web (101, 201) that travels in a direction of travel (102, 202, 304),
    with at least one blade (105, 205) for cutting the material web (101, 201) in the direction of travel (102, 202, 304) into multiple partial material webs (106-109, 206-209, 305-308),
    with multiple folding elements (309-316) for folding the edges of the partial material webs (106-109, 206-209, 305-308), wherein one folding element (309-316) is provided for each edge of the partial material webs,
    with a first oscillating device with which the at least one blade (105, 205) can be moved transversely to the direction of travel (102, 202, 304),
    characterised in that the winding device is further provided
    with a second oscillating device with which the folding elements (309-312) for the left-hand edges of the partial material webs (106-109, 206-209, 305-308), as viewed in the direction of travel (102, 202, 304), can be moved transversely to the direction of travel (102, 202, 304),
    with a third oscillating device with which the folding elements (313- 316) for the right-hand edges of the partial material webs (106-109, 206-209, 305-308), as viewed in the direction of travel (102, 202, 304), can be moved transversely to the direction of travel (102, 202, 304),
    with a controller for controlling the first oscillating device, the second oscillating device and the third oscillating device, in such a way that the folded edges of the partial material webs (106-109, 206-209, 305-308) can be wound at an offset.
  2. Winding device according to claim 1, wherein the first oscillating device, the second oscillating device and the third oscillating device each respectively consist of an eccentric driven by a motor (317, 319).
  3. Winding device according to any one of claims 1- 2, wherein the width of the folded edges is adjustable via the controller.
  4. Winding device according to any one of claims 1 - 3, wherein the frequencies of the first oscillating device, the second oscillating device and the third oscillating device are separately adjustable via the controller.
  5. Winding device according to any one of claims 1 - 4, wherein the strokes of the first oscillating device, the second oscillating device and the third oscillating device are separately adjustable via the controller.
  6. Winding device according to any one of claims 1 - 5, wherein the thickness profile of the wound roll is measured and transmitted to the controller.
  7. Winding device according to any one of claims 1 - 6, wherein the web speed of the material web (101, 201) is measured and transmitted to the controller.
  8. Winding device according to any one of claims 1- 7, wherein the material web (101, 201) is a stretch film (101, 201) produced on a cast film line or on a blown film line.
EP20775827.7A 2019-09-18 2020-09-09 Winding device for winding a material web Active EP4072981B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102019125179 2019-09-18
PCT/EP2020/075142 WO2021052826A1 (en) 2019-09-18 2020-09-09 Winding device for winding a material web

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EP4072981A1 EP4072981A1 (en) 2022-10-19
EP4072981B1 true EP4072981B1 (en) 2024-11-06

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EP (1) EP4072981B1 (en)
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Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2952459A1 (en) * 2014-05-10 2015-12-09 SML Maschinengesellschaft m.b.H. Method and device for producing a number of wound rolls of sheet material

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3536273A (en) * 1969-02-07 1970-10-27 Du Pont Method of and apparatus for winding a web of plastic film
US20100015422A1 (en) * 2008-07-21 2010-01-21 Paragon Films, Inc. Oriented Film Produced In-Process for Use in the Stretch Film Market
US20140208905A1 (en) * 2013-01-31 2014-07-31 Anthony Galea Method and apparatus for fabricating stretch film rolls
US20150284207A1 (en) * 2013-01-31 2015-10-08 Anthony Galea Method and apparatus for fabricating stretch film rolls
DE102014205173A1 (en) * 2013-10-15 2015-04-16 Windmöller & Hölscher Kg winder

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2952459A1 (en) * 2014-05-10 2015-12-09 SML Maschinengesellschaft m.b.H. Method and device for producing a number of wound rolls of sheet material

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US20220371845A1 (en) 2022-11-24
WO2021052826A1 (en) 2021-03-25
EP4072981A1 (en) 2022-10-19

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