EP0593946B1 - Dispositif pour enrouler une bande - Google Patents

Dispositif pour enrouler une bande Download PDF

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Publication number
EP0593946B1
EP0593946B1 EP93115574A EP93115574A EP0593946B1 EP 0593946 B1 EP0593946 B1 EP 0593946B1 EP 93115574 A EP93115574 A EP 93115574A EP 93115574 A EP93115574 A EP 93115574A EP 0593946 B1 EP0593946 B1 EP 0593946B1
Authority
EP
European Patent Office
Prior art keywords
winding
web
motor
contact
contact roller
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.)
Expired - Lifetime
Application number
EP93115574A
Other languages
German (de)
English (en)
Other versions
EP0593946A3 (en
EP0593946A2 (fr
Inventor
Rolf Kammann
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 EP0593946A2 publication Critical patent/EP0593946A2/fr
Publication of EP0593946A3 publication Critical patent/EP0593946A3/de
Application granted granted Critical
Publication of EP0593946B1 publication Critical patent/EP0593946B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B65H23/00—Registering, tensioning, smoothing or guiding webs
    • B65H23/04—Registering, tensioning, smoothing or guiding webs longitudinally
    • B65H23/18—Registering, tensioning, smoothing or guiding webs longitudinally by controlling or regulating the web-advancing mechanism, e.g. mechanism acting on the running web
    • B65H23/195—Registering, tensioning, smoothing or guiding webs longitudinally by controlling or regulating the web-advancing mechanism, e.g. mechanism acting on the running web in winding mechanisms or in connection with winding operations
    • B65H23/198—Registering, tensioning, smoothing or guiding webs longitudinally by controlling or regulating the web-advancing mechanism, e.g. mechanism acting on the running web in winding mechanisms or in connection with winding operations motor-controlled (Controlling electrical drive motors therefor)

Definitions

  • the invention relates to a device for winding up a web, preferably a plastic film web produced by blowing or casting, with a winding tube for the web driven by an electric winding motor, with a web tension measuring roller detecting the web tension, with one arranged between the winding tube and the web tension measuring roller an electric motor driven contact roller, which is adjustable for contact winding on the film roll being formed and is at a distance from the film roll during gap winding, and with a control device for regulating the motors as a function of the feed speed of the web in accordance with the measured web tensile force such that the winding hardness of the winding roll in can be influenced in a predetermined manner.
  • the web 1 to be wound is fed via a contact roller 2 to the winding tube 3 or the film roll 4 forming thereon and wound up to form the film roll 4, the contact roller being set against the circumference of the film roll 4 forming.
  • a web tension measuring roller 5 is arranged in front of the contact roller and measures the web tension of the film web running onto the contact roller 2. The web tension measuring roller 5 forms a web loop or deflects the web 1, so that the web tension can be determined from the tension exerted by the incoming and outgoing run of the web on the web tension measuring roller 5.
  • the web tension measuring roller 5 is assigned a measuring sensor 6, which supplies a signal corresponding to the web tension measured in each case to a control device, for example a computer 7.
  • a control device for example a computer 7.
  • This computer 7 compares the signal received by the transducer 6 as an actual value signal with a setpoint signal stored in the computer 7. If the two signals differ from one another, the direct current motor 8 driving the contact roller 2 is speed-controlled in a positive or negative sense, specifically in such a way that the sensor 6 the actual value signal supplied to the computer corresponds to the setpoint signal.
  • the motor 3 driving the sleeve 3 and the winding roll forming on this must also be regulated according to the growing diameter of the film roll 4. This is done by assigning a sensor 10 to the sleeve 3 or the mandrels or shaft journals carrying the sleeve 3, which sensor 10 determines the actual diameter of the film roll 4 via the number of revolutions of the sleeve 3. This value is a measure of the change in the torque of the winding motor 9.
  • the winding motor 9 is therefore regulated in its torque. This means that the torque of the motor 9 is changed in accordance with the diameter of the winding roll forming and the desired winding characteristic, while the speed of the motor 8 driving the contact roller 2 is regulated.
  • Another mode of operation is that the contact roller 2 has moved away from the sleeve 3 or the winding roll 4 forming on it and is at a distance from it. Such a winding is referred to as so-called "central gap winding". This mode of operation is always used when very sensitive foils have to be wound up which would suffer from the contact pressure on the part of the contact roller.
  • the winding rolls are wound by central gap winding in a known manner, the winding motor 8 and the motor 9 driving the contact roller 2 are regulated in the manner described above. Another type of control was previously not considered possible because the web tension between the sleeve 3 or the film roll 4 formed on this and the contact roller moved away from it cannot be measured because no measuring devices can be accommodated in the transition area. If the known winding device described with reference to FIG. 1 is operated as a central slit winder, the winding motor 9 is regulated in its torque in accordance with the increasing diameter of the winding roll 4 that is formed in such a way that the desired winding characteristic results.
  • the desired winding characteristic can only be achieved very imprecisely via a torque control of the winding motor, so that the torque control of the winding motor no longer meets the increased requirements for the characteristic of the winding hardness in winding rolls with more sensitive types of film.
  • the object of the invention is therefore to provide a device of the type mentioned at the outset, with which even more sensitive films can be wound into film rolls in the central gap winding, in which the winding hardness can be influenced in a manner corresponding to the more sensitive types of film.
  • this object is achieved in a device of the generic type by the features of characterizing the part of claim 1 and in particular by the fact that the control device is provided with a switchover by which central contact winding occurs the torque of the winding motor is regulated in accordance with the increasing winding roll diameter and the contact roller is driven at a speed corresponding to the web tensile force, and in the case of central gap winding the winding motor is speed-regulated in accordance with the measured web tensile force.
  • a sensitive winding of a web, preferably a plastic film web, to a film roll with the desired characteristic of the winding hardness can be achieved if the winding roll is driven at a speed which is regulated in accordance with the tensile force of the web running onto the film roll.
  • the tension or web tension with which each individual layer is wound can be determined sensitively and adapted to the desired winding characteristic.
  • a sensitive adjustment of the winding hardness to the desired winding characteristic can be achieved in particular via a speed control of the winding motor if the influence of the contact roller on the web tensile force can be eliminated.
  • the motor of the contact roller having a gap to the winding roller is torque-controlled in such a way that the motor torque compensates for the inertia of the contact roller.
  • the inertia of the contact roller can no longer change the web tension measured by the web tension measuring roller, so that the web tension measured with the help of the web tension measuring roller can be used sensitively to regulate the speed of the winding motor.
  • frictional influences can be taken into account and compensated for in the torque control of the motor of the contact roller.
  • the device according to the invention can thus be used both as a contact central winder and as a gap central winder, the contact roller winding motor being torque-controlled and the contact roller motor being speed-controlled and the central winding winding speed control of the winding motor and torque control of the contact roller only in such a way that this no longer has any effect on the web tension.
  • a corresponding switchover of the motors to the different operating modes can be effected in a simple manner by the control unit.
  • the winding motor and the motor of the contact roller are expediently direct current motors because their torque and speed can be regulated in a particularly simple manner.
  • the torque is proportional to the armature current I A and the speed is approximately proportional to the armature voltage U A.
  • torque control the web is only wound onto the winding roll with a roughly predeterminable web tension.
  • FIG. 2 An embodiment of the invention is described below with reference to FIG. 2, in which a winding device is shown schematically, which can be converted from contact central winding to gap central winding and vice versa.
  • the winder works as a contact central winder, that is to say in the same way as the winding device described with reference to FIG. 1.
  • the control in the manner shown in FIG. 2 thus takes place in the same way as the device according to FIG. 1, so that the same reference numbers as in FIG. 1 have been used for the same parts of the device according to FIG. 2.
  • the contact roller 2 is always at a distance or nip from the film roll 4.
  • the motors 8 and 9 are switched over, in such a way that the speed of the motor 9 and the torque of the motor 8 are regulated.
  • the signal fed to the computer 7 by the web tension measuring roller 5 via the sensor 6 is used for controlling the speed of the motor 9 for the film roll 4.
  • the corresponding target value for the characteristic of the film hardness when the film roll grows is stored in the computer 7.
  • the motor 8 of the contact roller 2 which only has the function of a feed roller during slit winding, is regulated in its torque in such a way that it compensates for the mass of the contact roller 2 and the friction of the contact drive and this in accordance with the speed of the web running over this keeps turning without affecting the web.
  • the contact roller 2 operating in the nip mode thus does not exert any web tension on the supplied foil web 1.
  • the value determined by the web tension measuring roller 5 thus corresponds to the web tensile force which also exists between the contact roller 2 and the film roll 4. Since the characteristic of the winding hardness is achieved by regulating the speed of the film roll, the winding hardness of the film roll can be determined very sensitively.

Landscapes

  • Winding Of Webs (AREA)
  • Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)

Claims (3)

  1. Dispositif d'enroulement d'une bande, de préférence d'une bande de feuille en matière synthétique fabriquée suivant un procédé de soufflage ou de coulée, avec un mandrin entraîné par un moteur d'enroulement électrique pour la bande, avec un rouleau de mesure de traction de bande détectant la traction de bande, avec un rouleau de contact disposé entre le mandrin et le rouleau de mesure de traction de bande, entraîné par un moteur électrique et qui est applicable, pour l'enroulement à contact, au rouleau de feuille qui se forme et qui présente, lors de l'enroulement à fente, un écart relativement au rouleau de feuille et avec un dispositif de réglage pour régler les moteurs en fonction de la vitesse d'amenée de la bande conformément à la force de traction de bande mesurée de façon que la dureté d'enroulement du rouleau d'enroulement puisse être influencée d'une manière prédéfinissable, caractérisé en ce que le dispositif de réglage est pourvu d'un dispositif de commutation (11) par lequel, lors de l'enroulement à contact, le couple de rotation du moteur d'enroulement (9) est réglé conformément au diamètre croissant du rouleau d'enroulement et que le rouleau de contact (2) est entraîné par un nombre de tours correspondant à la force de traction de bande et, lors de l'enroulement à fente, le moteur d'enroulement (9) est réglé en fonction de la force de traction de bande mesurée quant à son nombre de tours.
  2. Dispositif selon la revendication 1, caractérisée en ce que lors de l'enroulement à fente, le moteur (8) du rouleau de contact (2) présentant un écart relativement au rouleau d'enroulement (4) soit réglé de telle sorte quant à son couple de rotation que le couple moteur compense l'inertie du rouleau de contact (2) et le frottement de l'entraînement par contact.
  3. Dispositif selon la revendication 1 ou 2, caractérisé en ce que les moteurs (8, 9) pour l'entraînement du mandrin (3) et du rouleau de contact (2) sont des moteurs à courant continu.
EP93115574A 1992-10-19 1993-09-27 Dispositif pour enrouler une bande Expired - Lifetime EP0593946B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE9214095 1992-10-19
DE9214095U 1992-10-19
DE9216261U 1992-11-30
DE9216261U DE9216261U1 (de) 1992-10-19 1992-11-30 Vorrichtung zum Aufwickeln einer Bahn

Publications (3)

Publication Number Publication Date
EP0593946A2 EP0593946A2 (fr) 1994-04-27
EP0593946A3 EP0593946A3 (en) 1995-11-02
EP0593946B1 true EP0593946B1 (fr) 1996-11-27

Family

ID=25960038

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93115574A Expired - Lifetime EP0593946B1 (fr) 1992-10-19 1993-09-27 Dispositif pour enrouler une bande

Country Status (3)

Country Link
US (1) US5437417A (fr)
EP (1) EP0593946B1 (fr)
DE (2) DE9216261U1 (fr)

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US7909282B2 (en) * 2002-02-28 2011-03-22 Kimberly-Clark Worldwide, Inc. Center/surface rewinder and winder
US8210462B2 (en) * 2002-02-28 2012-07-03 Kimberly-Clark Worldwide, Inc. Center/surface rewinder and winder
US8042761B2 (en) * 2002-02-28 2011-10-25 Kimberly-Clark Worldwide, Inc. Center/surface rewinder and winder
US8757533B2 (en) * 2002-02-28 2014-06-24 Kimberly-Clark Worldwide, Inc. Center/surface rewinder and winder
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US7954747B2 (en) * 2008-06-13 2011-06-07 Chudy Group, LLC Pouch package spooler and method of pouch package web management
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JP6489926B2 (ja) * 2015-05-12 2019-03-27 株式会社沖データ 媒体巻取装置及び媒体巻取方法
CN113682866B (zh) * 2021-07-27 2023-06-23 深圳弘博智能数码设备有限公司 一种料卷输送控制方法及其装置、卷对卷印刷设备
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Also Published As

Publication number Publication date
DE9216261U1 (de) 1994-02-24
EP0593946A3 (en) 1995-11-02
EP0593946A2 (fr) 1994-04-27
DE59304602D1 (de) 1997-01-09
US5437417A (en) 1995-08-01

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