WO2023006802A1 - Enrouleur pour enrouler une bande de matériau - Google Patents

Enrouleur pour enrouler une bande de matériau Download PDF

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Publication number
WO2023006802A1
WO2023006802A1 PCT/EP2022/071038 EP2022071038W WO2023006802A1 WO 2023006802 A1 WO2023006802 A1 WO 2023006802A1 EP 2022071038 W EP2022071038 W EP 2022071038W WO 2023006802 A1 WO2023006802 A1 WO 2023006802A1
Authority
WO
WIPO (PCT)
Prior art keywords
winding
material web
winder
station
film
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.)
Ceased
Application number
PCT/EP2022/071038
Other languages
German (de)
English (en)
Inventor
Thomas Sehlleier
Sebastian MARTINEK
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
Priority to EP22751110.2A priority Critical patent/EP4377247A1/fr
Publication of WO2023006802A1 publication Critical patent/WO2023006802A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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
    • B65H19/00—Changing the web roll
    • B65H19/22—Changing the web roll in winding mechanisms or in connection with winding operations
    • B65H19/2284—Simultaneous winding at several stations, e.g. slitter-rewinders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H19/00—Changing the web roll
    • B65H19/22—Changing the web roll in winding mechanisms or in connection with winding operations
    • B65H19/26—Cutting-off the web running to the wound web roll
    • B65H19/265—Cutting-off the web running to the wound web roll using a cutting member moving linearly in a plane parallel to the surface of the web and along a direction crossing the web
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H19/00—Changing the web roll
    • B65H19/22—Changing the web roll in winding mechanisms or in connection with winding operations
    • B65H19/28—Attaching the leading end of the web to the replacement web-roll core or spindle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/40—Type of handling process
    • B65H2301/41—Winding, unwinding
    • B65H2301/414—Winding
    • B65H2301/41419—Starting winding process
    • B65H2301/41425—Starting winding process involving blowing means, e.g. air blast
    • 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
    • B65H2301/5153—Details of cutting means
    • B65H2301/51532—Blade cutter, e.g. single blade cutter
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2403/00—Power transmission; Driving means
    • B65H2403/90—Machine drive
    • B65H2403/94—Other features of machine drive
    • B65H2403/942—Bidirectional powered handling device
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2406/00—Means using fluid
    • B65H2406/10—Means using fluid made only for exhausting gaseous medium
    • B65H2406/12—Means using fluid made only for exhausting gaseous medium producing gas blast
    • B65H2406/122—Nozzles
    • 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 winder for winding a web of material.
  • winding up the film web is a complicated process step, since plastic films are produced in a large variety with very different properties.
  • the winding behavior is influenced in many ways, so that a corresponding winder must be able to be flexibly adapted to the behavior of the material web to be wound.
  • plastic films Typical processing speeds in the production of plastic films range from 2 to 1000 m/min, while the finished film rolls can usually have a diameter of 50 to 2000 mm and a width of 10 to 6000 mm.
  • the thickness of the plastic films can range from a few micrometers to the millimeter range.
  • the formulation of plastic films is based, for example, on polyolefins (such as PE polyethylene or PP polypropylene) and ranges from mono-extruded films consisting of a single layer to co-extruded multi-layer films with three, five or more layers.
  • fluff hard paper, plastic, steel
  • winding cores Different types of fluff (hard paper, plastic, steel) are used as winding cores.
  • coreless winding is also carried out onto a steel shaft, which can then be removed after the winding process.
  • the finished film rolls are usually removed from the winder without interrupting the film production process using special roll changing systems.
  • the finished rolls of film are then delivered, for example, to end users (e.g. for processing as packaging material) or are fed to further processing, e.g. B. in coating and stretching systems or in printing machines.
  • a winder for winding a material web usually consists of a feed station for conveying the material web into the winder, a winding station for winding the material web conveyed from the feed station onto a film roll, a changing station for carrying out a flying change of the material web from the finished film roll a new winding sleeve and a transfer station in which the finished film roll can be removed from the winder for further processing.
  • the processes in the feed station, the winding station, the changing station and the transfer station are controlled by one or more control units.
  • the film web is regularly guided over a deflection roller and then wound onto a film roll.
  • a deflection roller In the winding process used in the winding station, the film web is regularly guided over a deflection roller and then wound onto a film roll.
  • the contact central winding is a combination of contact winding and central winding, so that now both the deflection roller and the film roll are driven.
  • This method a wide variety of film types can be accommodated by adjusting the web tension and contact forces. Winding with a defined winding gap or the application of a contact force regulated within narrow limits are also possible.
  • the central contact winding thus allows a winder to be operated with maximum flexibility.
  • the film roll is held in a frame-fixed rotating arm, which swings away from the contact roller as the roll diameter increases.
  • the roll weight can be used in contact winding mode to generate the contact pressure.
  • the contact roller can be mounted so that it can move horizontally in order to enable sensitively adjustable contact pressures.
  • a central contact winding is also possible with a second drive. After wrapping is complete, the rotary arm is still used to transfer the finished roll of film from the wrapping station to the transfer station.
  • Turret winder In the turret winder, two winding shafts are arranged on a rotating turning disk. Once the desired roll diameter has been reached for the film roll, the turntable pivots through 180° during the ongoing winding process and brings an empty winding tube into the winding position. The film web is automatically cut off and the beginning of the film web is wound onto the new fluff. The finished film roll is removed from the pivoted winding position.
  • Turret winders usually work according to the central winding method. In addition to winders with two winding positions on the turntable, turret winders with up to four winding positions are also used for high-speed applications (e.g. short stretch film rolls).
  • a winding shaft is held on a circular turning disc.
  • a second winding shaft is held in a rotary arm that can be pivoted independently of the turning disc.
  • Another parameter for achieving a high winding quality can be the film side or the direction of rotation with which the film web is wound onto the film roll, since multi-layer films can also have different film properties on the different film sides.
  • VSK rollers are used in the changing station (VSK stands for the abbreviation of "vacuum cutting contact roller”).
  • VSK stands for the abbreviation of "vacuum cutting contact roller”
  • the film is cut out of the roller when using the VSK roller. This enables a right-angled cut and a production-safe, turn-free winding onto the new winding core, regardless of the direction of rotation. Because the film is sucked in across the entire width of the roller shortly before the cut, the film can also be safely picked up by the new winding core without any creases forming.
  • VSK rolls are relatively expensive in terms of costs and maintenance.
  • the object of the invention is therefore to provide a cost-effective winder for winding a material web with an optional direction of rotation. This object is solved by the features of patent claim 1. Further preferred embodiments result from the dependent claims.
  • the winder according to the invention for winding a material web comprises a feed station for conveying the material web into the winder, a winding station for winding the material web conveyed from the feed station onto a film roll, a changing station for carrying out a flying change of the material web from the finished film roll to a new winding core, and a transfer station in which the finished roll of film can be removed from the winder for further processing, with the changing station having a deflection roller and an axially displaceable scraper for separating the material web at the moment of the change, and with the material web being able to be fed to the deflection roller with two different directions of rotation is, so that as a result the material web can also be picked up from the new winding core with two different directions of rotation, the transport of the material web between the deflection roller and the new winding core being at least in one direction of rotation is supported by means for applying an electrostatic charge to the material web.
  • the means for applying an electrostatic charge to the material web consist of an electrode arrangement.
  • the means for applying an electrostatic charge to the material web can also consist of a brush arrangement.
  • the web of material consists of a plastic film.
  • FIG. 1 shows a schematic side view of a double mounting rail winder of a blown film extrusion system
  • Fig. 2 shows a first view of the winding station and the changing station of the left support rail winder according to Fig. 1,
  • FIG. 3 shows a second view of the winding station and the changing station of the left mounting rail winder according to FIG. 1, and
  • FIG. 4 shows a schematic view of the electrode arrangement according to FIGS. 2 and 3.
  • FIG. 1 shows a schematic side view of a double support rail winder of a blown film extrusion plant.
  • the upstream blown film extrusion system supplies a film tube 101, which is guided over a web center control 102 and then passes through a pretreatment 103 to increase the surface tension.
  • the preference 104 conveys the film tube to the longitudinal cutting device 105, where the film tube is slit and divided into two material webs 122, 123.
  • further operation then proceeds symmetrically, i. That is, the first material web 122 is fed to the left support rail winder 131 and the second material web 123 is fed to the right support rail winder 132 .
  • the support rail winders 131, 132 consist of a feed station 133, 134 for conveying the material web into the winder, a winding station 135, 136 for winding the material web conveyed from the feed station onto a film roll, a changing station 139, 140 for carrying out a flying Changing the web of material from the finished roll of film to a new winding sleeve and a transfer station 137, 138 in which the finished roll of film can be removed from the winder for further processing.
  • the control unit calculates the required drive values in the mounting rail winder 131, 132 in order to regulate the web tension to a predetermined desired value.
  • the control unit can also, for example
  • Longitudinal cutting devices 108, 109 may be provided with spreader Rollers work together to divide and finish the material web into several parallel panels.
  • the core of the winding station 135, 136 is formed by the deflection roller 112, 113 and the film roll 114, 115.
  • the film roll 114, 115 can be displaced along a horizontal guide rail depending on the roll diameter.
  • a changing station 139, 140 with functions for automated roll changing is also provided directly at the winding station 135, 136.
  • This also includes, in particular, an axially displaceable scraper blade, which cuts through the material web when it reaches the diameter of the finished film roll.
  • the end of the film produced by the cut is automatically wound onto the new core using suitable winding mechanisms.
  • new cores are held in stock together with the winding shafts in the magazine 110, 111 and brought into the winding position fully automatically when the roll is changed.
  • the transfer station 137, 138 is responsible for transporting away the finished film rolls 116, 117, which often weigh several tons.
  • placement arms 118, 119 and crane systems 120, 121 are provided, for example.
  • the crane systems 120, 121 are also used to store new sleeves in the magazine 110, 111 for renewed use.
  • FIG. 2 shows a first view of the winding station and the changing station of the left mounting rail winder according to FIG. 1.
  • the winding station 135 consists in detail of the guide roller 201, the deflection roller 112 and the film roll 114.
  • the changing station 139 consists of the new winding core 203, the scraper 206 that can be moved along the beam 205, and the lifting roller 204.
  • the changing station also includes 139 an electrode arrangement 202, which, however, only comes into action in the second view according to FIG. 3, so that reference is made to the description according to FIG.
  • the lifting roller is shifted from the position shown in dashed lines along the arrow 207 to the position 204'.
  • the material web 122 is lifted off the guide roller 112 in order and brought into the cutting path of the scraper 206 .
  • the scraper 206 is moved along the arrow 208, as a result of which the web of material is severed.
  • the loose end of the web is then picked up by the new winding core 203, with which the change on the fly is completed.
  • the finished film roll 114 is shifted to the transfer station 118 for further processing and the new winding sleeve 203 is then pivoted to the position of the former film roll.
  • the lifting roller 204' is moved back to the position 204 again.
  • Fig. 3 shows a second view of the winding station and the changing station of the left support rail winder according to Fig. 1.
  • Corresponding components from Fig. 1 and Fig. 2 are denoted by the same reference numbers, so that the description according to Fig. 1 and is referenced.
  • the difference from the first view according to FIG. 2 is that the material web 122 is now fed to the winding station 135 and the changing station 139 with the opposite side and direction of rotation.
  • a special feature of the invention is that the positions of the individual rollers of the winding station 135 and the changing station 139 remain unchanged and accordingly perform the same functions. This enables a very cost-effective construction with the simultaneous advantage of flexibility with regard to the winding direction.
  • the flow of the change on the fly is analogous to the first view according to FIG. 2, so that reference is made to the description according to FIG.
  • the first difference is that the scraper 206 is additionally shifted in the direction of the arrow 301 at the moment of the on-the-fly change, in order to compensate for the changed angle of the material web 122.
  • the second difference is that the electrode arrangement 202 is activated at the moment of the flying change, so that the loose end of the severed material web 122 adheres to the deflection roller 112 and can be picked up by the new winding sleeve 203.
  • FIG. 4 shows a schematic view of the electrode arrangement 202 according to FIG. 2 and FIG. 3.
  • the electrode arrangement 202 is only activated in the view according to FIG. 3 at the moment of the flying change.
  • the function is based on the principle of displacement polarization.
  • shift polarization If you bring a non-conductive material (“dielectric”) without electric dipoles into a homogeneous electric field, the charge centers in all atoms are slightly shifted and each atomic nucleus gets slightly out of the center of its electron shell. All atoms thus become electric dipoles, even if they originally did not have a dipole character. This form of polarization is called shift polarization.
  • the electrode arrangement 202 is now, for example, subjected to a positive potential and the deflection roller is subjected to a negative potential.
  • this creates an approximately homogeneous electric field through which the material web 122 is guided, which in this case acts as a dielectric.
  • the displacement polarization does not disappear again immediately, but continues, so that the material web 122 adheres to the negatively charged deflection roller 112 due to its dipole character and can therefore be safely guided to the new winding sleeve 203 at the moment of the flying change.

Landscapes

  • Replacement Of Web Rolls (AREA)
  • Winding Of Webs (AREA)

Abstract

L'invention concerne un enrouleur pour enrouler une bande de matériau, comprenant une station d'alimentation pour transporter la bande de matériau dans l'enrouleur, une station d'enroulement pour enrouler la bande de matériau transportée par la station d'alimentation sur un rouleau de film, une station de changement pour faire passer la bande de matériau du rouleau de film enroulé à un nouveau noyau d'enroulement à la volée, et une station de transfert dans laquelle le rouleau de film enroulé peut être retiré de l'enrouleur pour un traitement ultérieur. L'invention vise à mettre au point un enrouleur qui soit le plus économique possible pour enrouler une bande de matériau dans une direction de rotation sélectionnable. À cet effet, la station d'enroulement présente un rouleau de déviation et un racleur mobile axialement pour séparer la bande de matériau au moment du processus de changement, le transport de la bande de matériau entre le rouleau de déviation et le nouveau noyau d'enroulement étant supporté dans au moins une direction de rotation par l'application d'une charge électrostatique sur la bande de matériau.
PCT/EP2022/071038 2021-07-30 2022-07-27 Enrouleur pour enrouler une bande de matériau Ceased WO2023006802A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP22751110.2A EP4377247A1 (fr) 2021-07-30 2022-07-27 Enrouleur pour enrouler une bande de matériau

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102021119893.3 2021-07-30
DE102021119893.3A DE102021119893A1 (de) 2021-07-30 2021-07-30 Wickler zum Wickeln einer Materialbahn

Publications (1)

Publication Number Publication Date
WO2023006802A1 true WO2023006802A1 (fr) 2023-02-02

Family

ID=82799968

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2022/071038 Ceased WO2023006802A1 (fr) 2021-07-30 2022-07-27 Enrouleur pour enrouler une bande de matériau

Country Status (3)

Country Link
EP (1) EP4377247A1 (fr)
DE (1) DE102021119893A1 (fr)
WO (1) WO2023006802A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN118419661A (zh) * 2024-07-05 2024-08-02 常州树杰塑业有限公司 一种具有水汽阻隔功能pe薄膜生产用收卷装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4115863A1 (de) * 1991-05-15 1992-11-19 Kampf Gmbh & Co Maschf Mehrfach-wendewickelmaschine zum aufwickeln von warenbahnen, insbesondere folien o. dgl.
EP1433730A1 (fr) * 2002-10-25 2004-06-30 Reifenhäuser GmbH & Co. Maschinenfabrik Dispositif pour enrouler et méthode pour changer un mandarin d'enroulage dans une enrouleuse
DE202014009285U1 (de) * 2014-11-22 2015-02-05 Heino Sommer Duales Wickel- u. autom. Kombi- Rollenwechsel-System
JP2015039747A (ja) * 2013-08-22 2015-03-02 富士フイルム株式会社 ウエブ切断方法、及びウエブ切断装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4115863A1 (de) * 1991-05-15 1992-11-19 Kampf Gmbh & Co Maschf Mehrfach-wendewickelmaschine zum aufwickeln von warenbahnen, insbesondere folien o. dgl.
EP1433730A1 (fr) * 2002-10-25 2004-06-30 Reifenhäuser GmbH & Co. Maschinenfabrik Dispositif pour enrouler et méthode pour changer un mandarin d'enroulage dans une enrouleuse
JP2015039747A (ja) * 2013-08-22 2015-03-02 富士フイルム株式会社 ウエブ切断方法、及びウエブ切断装置
DE202014009285U1 (de) * 2014-11-22 2015-02-05 Heino Sommer Duales Wickel- u. autom. Kombi- Rollenwechsel-System

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN118419661A (zh) * 2024-07-05 2024-08-02 常州树杰塑业有限公司 一种具有水汽阻隔功能pe薄膜生产用收卷装置

Also Published As

Publication number Publication date
DE102021119893A1 (de) 2023-02-02
EP4377247A1 (fr) 2024-06-05

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