EP0169476A2 - Dispositif pour effectuer un changement de bobine - Google Patents

Dispositif pour effectuer un changement de bobine Download PDF

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Publication number
EP0169476A2
EP0169476A2 EP85108866A EP85108866A EP0169476A2 EP 0169476 A2 EP0169476 A2 EP 0169476A2 EP 85108866 A EP85108866 A EP 85108866A EP 85108866 A EP85108866 A EP 85108866A EP 0169476 A2 EP0169476 A2 EP 0169476A2
Authority
EP
European Patent Office
Prior art keywords
web
control circuit
change
drive unit
speed
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.)
Granted
Application number
EP85108866A
Other languages
German (de)
English (en)
Other versions
EP0169476B1 (fr
EP0169476A3 (en
Inventor
Wolfgang Dipl.-Ing. Bauer
Wilhelm Schirm
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.)
Graphischer Maschinenbau GmbH
Original Assignee
Graphischer Maschinenbau GmbH
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 Graphischer Maschinenbau GmbH filed Critical Graphischer Maschinenbau GmbH
Publication of EP0169476A2 publication Critical patent/EP0169476A2/fr
Publication of EP0169476A3 publication Critical patent/EP0169476A3/de
Application granted granted Critical
Publication of EP0169476B1 publication Critical patent/EP0169476B1/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
    • B65H19/00—Changing the web roll
    • B65H19/10—Changing the web roll in unwinding mechanisms or in connection with unwinding operations
    • B65H19/14—Accumulating surplus web for advancing to machine while changing the web roll
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2408/00—Specific machines
    • B65H2408/20—Specific machines for handling web(s)
    • B65H2408/21—Accumulators
    • B65H2408/217—Accumulators of rollers type, e.g. with at least one fixed and one movable roller
    • B65H2408/2171—Accumulators of rollers type, e.g. with at least one fixed and one movable roller the position of the movable roller(s), i.e. the web loop, being positively actuated
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2553/00—Sensing or detecting means
    • B65H2553/51—Encoders, e.g. linear

Definitions

  • the invention relates to a device for carrying out a roll change when the roll is at a standstill, with a roll holder provided with roll receiving devices, a web connecting device and roll drive devices and a web storage device that can be emptied and then refilled when the roll is at a standstill, said web storage unit holding at least one stationary and at least one movable carriage that interacts with a drive unit Has roller.
  • the drive assembly assigned to the slide is a cylinder-piston assembly gat formed, by means of which the slide for filling the memory is raised and braked when emptying the memory against the feed force exerted by the web tension on the slide.
  • the acceleration and the advancement of the carriage are therefore accomplished by the web tension.
  • This leads to high web tension fluctuations, which has an unfavorable effect on the permissible web speed, since in the case of high speeds, even smaller web tension fluctuations lead to a very high risk of tears.
  • the driving or braking torque is transmitted to the slide via a clutch, usually via a so-called magnetic powder clutch, which further increases the disadvantages described above. The reason for this can be seen in the fact that different frictional forces result from heating and / or powder wear.
  • This object is achieved in that the carriage can be driven by means of the associated drive unit during emptying of the web store and that the energy supply to the drive unit during the emptying of the web store can be influenced at least as a function of a change in the web tension.
  • the carriage together with the associated drive unit advantageously serve as an actuator within a control loop for regulating the web tension.
  • This ensures that the memory always releases as much web as is required to keep the web tension constant within narrow tolerance limits.
  • the advantageous consequence of this is a high level of crack resistance, which in turn allows high web speeds.
  • the measures according to the invention thus advantageously enable an increase in performance not only of the reel changer, but also of the processing machine arranged downstream of it. The advantages that can be achieved with the invention can therefore be seen in excellent economy.
  • a direct current machine can expediently be used as the drive unit for the carriage.
  • This is advantageously a simple form of a so-called four-quadrant drive unit, which can be operated in each quadrant and has the same operating conditions.
  • the web speed is essentially predetermined by the feed speed of the processing machine loaded with the web, for example a printing machine.
  • the control loop operating as a function of a change in the web tension can advantageously be subordinated to a control loop operating as a function of a change in the web speed. This results in advantageously a cascade control and thus both a high sensitivity and short response times.
  • the drive unit assigned to the slide is normally supplied with energy from a supply network.
  • a further, subordinate control loop can be provided in a further advantageous embodiment of the superordinate measures, which works as a function of changes in the energy supply to the drive unit of the slide. This practically results in a three-stage cascade control and thus a particularly high level of sensitivity and particularly short response times.
  • the actual value pickup of the control loop which operates as a function of a change in the web tension
  • the dancer roller changes its position depending on the web tension. This change in position can be detected simply and precisely by means of a displacement sensor.
  • the dancer roller is a flexible link within the web guide, which has a positive effect on the safety against tearing.
  • the actual value pickup of the control loop which operates as a function of a change in the web speed, can have a tachometer generator which can be driven by the carriage drive unit.
  • the setpoint generator of this control loop can advantageously be designed as a tachometer generator that can be driven at the working speed of a processing machine that can be fed with the web, which enables the web speed to be recorded easily.
  • Another advantage can be seen in the fact that the tachometer generators of the speed recorded in each case emit analog electrical signals which can be processed in a simple manner by control technology.
  • the web tension is expediently kept constant by influencing the energy supply to the drive devices assigned to the reels as a function of a change in the web tension.
  • the same actual web tension sensor can be used as during the roll change.
  • a switch is provided in the signal line adjoining the web tension actual value pickup, by means of which the web tension actual value pickup can be separated for normal operation from the downstream controller assigned to the carriage drive unit and connected to a controller assigned to the roller drive device.
  • FIG. 1 The only figure in the drawing shows a schematic illustration of a reel changer according to the invention arranged upstream of a printing press and the control system assigned to it.
  • the roll changer 3 arranged upstream of the printing press 1 contains a roll holder 6 with stacking devices 7 for the rolls 4, 5 arranged one above the other and with a web connecting device 8 and with drive devices 9 assigned to the rolls 4 and 5.
  • the roll changer 3 also contains a web store arranged downstream of the roll holder 6 10, which is provided for receiving a web supply with stationary arranged on the bottom, on a movable up and down carriage 12, movable relative to the stationary arranged deflection rollers 11.
  • the web 2 is looped down around the deflection rollers 11 and 13, respectively.
  • the carriage 12 is received here on chain wheels 14, here endless lifting chains 15, which can be driven by means of an associated drive unit 16 which is firmly coupled to a pair of chain wheels.
  • the drawing is based on an operating state in which the running web 2 is removed from the upper roll 4 and the lower web 5 is held in a waiting position.
  • the diameter of the roll feeding the running web 2 can be monitored by means of a sensor 17.
  • the respective roller diameter is determined by means of a computer 17, and the pulses emitted when the running roller is rotated and recorded by means of a pulse generator 17a with each revolution of the compares the cylinder 2 processing cylinders of the printing press 1 with the pulses received by means of a pulse generator 17b and uses this to calculate the current roll diameter.
  • the roll change is initiated when a preselected minimum diameter is reached. In the present case, this should take place when the roll is at a standstill.
  • the running roller 4 is braked to a standstill.
  • the run-off path 2a running therefrom is then cut.
  • the rear web end produced in this way is then glued to the beginning of the connecting web 2b contained on a new roll, here the lower roll 5.
  • the memory 10 which contains a certain web supply, is emptied. After the role change has been carried out, the memory 10 is refilled.
  • the carriage 12, which can be driven with the help of the drive unit 16, is moved downwards to empty the store 10 and vice versa. In order to avoid web tension fluctuations during the roll change, the carriage 12 is forcibly driven during the emptying of the memory with the aid of the associated drive unit 16 in such a way that as much web is always released as is required to keep the web tension constant within narrow limits.
  • the drive unit 16 assigned to the carriage 12 is designed here as a DC machine, which is connected to a power supply network via a supply line 18 is.
  • a DC machine is a so-called four-quadrant machine, which enables a stepless change from + to - and vice versa, both in terms of speed and torque, which is a prerequisite for avoiding voltage peaks in the reversal points.
  • An adjustable resistor can be provided in the supply line 18 to influence the voltage.
  • a four-quadrant thyristor current converter 19 is provided for this. This is a compact element with high efficiency and low losses.
  • the four-quadrant thyristor current transformer 19 is adjusted by means of a control device in such a way that the memory 10 always releases the web length required to keep the web tension constant.
  • a first control circuit 20 is provided with a controller 23, the output of which is connected to the thyristor current converter 19.
  • the controller 23 has two inputs, one of which is connected to an actual value transmitter 22 and the other is connected to a signal line 21 assigned to a setpoint.
  • a current or voltage measuring device arranged in the supply line 18 is used to form the actual value sensor 22.
  • the signal line 21 formed the output of a superimposed control circuit 27, by means of which speed fluctuations in the bleaching of the printing press 1 and thus fluctuations in the web feed speed are detected.
  • the control circuit 27, which is used to switch off current or voltage fluctuations in the supply network and is cascaded, comprises a controller 24, a setpoint generator 25 and an actual value transducer 26.
  • the setpoint generator 25 of this control circuit 27, which is superimposed on the cascade, is designed here as a tachometer generator, which with the drive speed of Printing machine 1 is drivable.
  • the setpoint generator 25, which is designed as a tachometer generator can simply be coupled firmly to the machine longitudinal shaft.
  • the actual value transmitter 26 is designed as a tachometer generator which is driven with the drive speed of the drive unit 16 assigned to the carriage 12. Instead of a tachometer generator, a digital-to-analog converter could also be provided.
  • the controller 24 of the speed control circuit 27 has three inputs. At the third input there is the output of a controller 28 of a further, cascaded superordinate control circuit 29, by means of which web tension fluctuations are directly detected.
  • the actual value sensor used for this can be a force sensor that measures the force acting on the bearings of a roller wrapped by the web 2.
  • the actual value pickup contains a dancer roller 30 and a transducer 31 arranged downstream of it.
  • the dancer roller 30 changes its position depending on the web tension. This change in position is detected with the aid of converter 31 and is given to the assigned controller 28 in the form of an electrical signal as the actual value.
  • a manually adjustable potentiometer which is set to a value corresponding to the desired position of the dancer roller 30, can be used as the setpoint generator 32 of the web tension control circuit 29.
  • three-stage cascade control ensures that the higher-level control loops 27 and 29 to act with its controller outputs a corrective to a regulator of each downstream control loop, wherein the fastest, the power fluctuations Control Reg g circle 20 of the most subordinate and the slowest, the Change in the position of the dancer roller 30, the control circuit 29 which is the most superordinate control circuit, which results in a control which is very responsive and nevertheless very sensitive, ie which has small changes in the control variable.
  • the memory 10 emptied during these phases is refilled, while the new roll is processed until a minimum diameter is reached.
  • the drive device 9 assigned to the running reel is driven after the desired peripheral speed has been reached at a speed regulated in the same manner as the speed of the drive unit 16 previously.
  • a basic control circuit 20a is provided to compensate for current and voltage fluctuations in the energy supply network, the structure of which corresponds to the control circuit 20 and which is therefore only indicated by a dash-dotted outline.
  • this control circuit 20a the energy assigned to the drive devices 9 and illustrated by the line 33 is supplied drove acted.
  • a further control circuit 27a, which operates as a function of a change in the web speed, and this control circuit 29a, which operates as a function of a change in the web tension, are cascaded over this basic control circuit 20a.
  • a controller 24a is provided with its output at the third input of the controller of the basic control circuit 20a, which is connected in parallel to the controller 24 of the web speed control circuit 27 to the tachometer generator forming the setpoint generator 25 and driven by the longitudinal shaft of the printing press 1, and the like with the speed of the drive devices 9 which are assigned to the respective running roller 4 or 5 and are likewise designed here as tachometer generators 34.
  • a logic element 39 is arranged upstream of the actual value input of the controller 24a, into which the signals emitted by the actual value sensors 34 and the signals emitted by the computer 17 are fed.
  • a controller 28a is provided with its output at the third input of the controller 24a of the subordinate basic control circuit 27a, which is connected in parallel to the controller 28 of the web tension control circuit 29 to the setpoint generator 32 and alternatively to the controller 28 to the through the dancer roller 30 and the converter 31 can be placed actual web tension sensor.
  • the actual value signal line 35 is branched and provided with a switch 36, by means of which the actual value transmitter formed by the dancer roller 30 and the converter 31 can be in the normal state with the controller 28a of the roller drive Direction 9 associated control circuit 29a and during the implementation of the role change until the normal running speed of the running roller is connected to the controller 28 of the control circuit 29 assigned to the carriage drive unit 16. This operating position is indicated in the drawing with solid lines.
  • the switching process which can be carried out by means of the switch 36 takes place after the end of the roll change and the acceleration of the new roll, that is to say after the storage 10 has been emptied.
  • the drive unit 16 assigned to the carriage 12 is accordingly only operated by the voltage control circuit 20 and the guided this superordinate speed control loop 27.
  • the third input of the controller 24 of the speed control circuit 27 is connected to an adjustable potentiometer 37 which specifies the desired end position of the slide 12 and thus the desired path reserve in the memory 10.
  • a switch 38 is provided in the signal line assigned to the third input of the controller 24, by means of which the controller 24 can alternatively be connected to the potentiometer 37 or the controller 28 of the higher-level control circuit 29.
  • the drive unit 16 switches off automatically.
  • the switches 36 and 38 can be operated individually or preferably together.

Landscapes

  • Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)
EP85108866A 1984-07-21 1985-07-16 Dispositif pour effectuer un changement de bobine Expired - Lifetime EP0169476B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19843426976 DE3426976A1 (de) 1984-07-21 1984-07-21 Vorrichtung zur durchfuehrung eines rollenwechsels
DE3426976 1984-07-21

Publications (3)

Publication Number Publication Date
EP0169476A2 true EP0169476A2 (fr) 1986-01-29
EP0169476A3 EP0169476A3 (en) 1988-02-17
EP0169476B1 EP0169476B1 (fr) 1990-01-31

Family

ID=6241250

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85108866A Expired - Lifetime EP0169476B1 (fr) 1984-07-21 1985-07-16 Dispositif pour effectuer un changement de bobine

Country Status (2)

Country Link
EP (1) EP0169476B1 (fr)
DE (2) DE3426976A1 (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4793564A (en) * 1986-08-27 1988-12-27 Veb Kombinat Polygraph "Werner Lamberz" Leipzig Device for controlling unwinding in a web-feeding device of a printing machine
EP0521159A1 (fr) * 1990-04-13 1993-01-07 Sk Engineering Ltd Systeme automatique de jonction de bandes
EP1013585A1 (fr) * 1998-12-24 2000-06-28 Fameccanica.Data S.p.A. Dispositif d'alimentation d'une bande
WO2000073185A1 (fr) * 1999-06-01 2000-12-07 Honigmann Industrielle Elektronik Gmbh Dispositif servant a retirer des bandes
EP1647509A3 (fr) * 2004-10-13 2006-06-07 Winkler + Dünnebier Aktiengesellschaft Dispositif et méthode de raccordement des extrémités de deux bandes de matériau et/ou dispositif de déroulement d'une bande de matériau d'un rouleau d'alimentation
EP1693323A1 (fr) * 2005-02-22 2006-08-23 MAN Roland Druckmaschinen AG Changeur de rouleaux pour une machine rotative d'impression et procédé de régulation d'un changeur
DE102008022702A1 (de) 2008-05-07 2009-11-19 Windmöller & Hölscher Kg Verfahren und eine Vorrichtung zum Abwickeln und zum Speichern von bahnförmigem Material
CN101070130B (zh) * 2007-06-19 2010-05-19 国营红阳机械厂 具张力控制的卷材动态存贮设备

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4762289A (en) * 1986-02-28 1988-08-09 Harland Machine Systems Limited Continuous supply of elongate material
DE19838545A1 (de) 1998-08-25 2000-03-02 Focke & Co Verfahren und Vorrichtung zum Erkennen von Druckmarken
DE102010001535A1 (de) * 2010-02-03 2011-08-04 manroland AG, 63075 Verfahren zur Regelung eines Rollenwechslers sowie Rollenwechsler
JP5821944B2 (ja) * 2011-02-24 2015-11-24 株式会社ニコン 搬送装置、製造システム

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1774780A1 (de) * 1967-09-05 1972-01-20 Westinghouse Electric Corp Einrichtung zum Regeln von Wicklerantrieben
DE2313857A1 (de) * 1972-03-20 1973-10-18 Butler Automatic Inc Zufuehreinrichtung fuer bahnmaterial
DE7501986U (de) * 1975-01-24 1975-09-04 Maschinenfabrik Goebel Gmbh Einrichtung zum Bewegen eines Walzenträgers.
US4151594A (en) * 1976-02-26 1979-04-24 Bobst-Champlain, Inc. Web tension control for high-speed web handling equipment
JPS54116519A (en) * 1977-07-21 1979-09-10 Piaggio & C Spa Twoostroke engine
EP0101044A1 (fr) * 1982-08-09 1984-02-22 Dai Nippon Insatsu Kabushiki Kaisha Procédé et dispositif pour relier des rouleaux de bandes successives pour alimenter une presse rotative ou similaire

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1774780A1 (de) * 1967-09-05 1972-01-20 Westinghouse Electric Corp Einrichtung zum Regeln von Wicklerantrieben
DE2313857A1 (de) * 1972-03-20 1973-10-18 Butler Automatic Inc Zufuehreinrichtung fuer bahnmaterial
DE7501986U (de) * 1975-01-24 1975-09-04 Maschinenfabrik Goebel Gmbh Einrichtung zum Bewegen eines Walzenträgers.
US4151594A (en) * 1976-02-26 1979-04-24 Bobst-Champlain, Inc. Web tension control for high-speed web handling equipment
JPS54116519A (en) * 1977-07-21 1979-09-10 Piaggio & C Spa Twoostroke engine
EP0101044A1 (fr) * 1982-08-09 1984-02-22 Dai Nippon Insatsu Kabushiki Kaisha Procédé et dispositif pour relier des rouleaux de bandes successives pour alimenter une presse rotative ou similaire

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN, Band 5, Nr. 97 (M-75)[769] 24 Juni 1981; & JP-A-54 116 519 (FUJI TEKKOSHO K.K.) 21.04.1981 *

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4793564A (en) * 1986-08-27 1988-12-27 Veb Kombinat Polygraph "Werner Lamberz" Leipzig Device for controlling unwinding in a web-feeding device of a printing machine
EP0521159A1 (fr) * 1990-04-13 1993-01-07 Sk Engineering Ltd Systeme automatique de jonction de bandes
EP0521159A4 (en) * 1990-04-13 1993-02-10 Sk Engineering Ltd Automatic web-joining system
EP1013585A1 (fr) * 1998-12-24 2000-06-28 Fameccanica.Data S.p.A. Dispositif d'alimentation d'une bande
WO2000073185A1 (fr) * 1999-06-01 2000-12-07 Honigmann Industrielle Elektronik Gmbh Dispositif servant a retirer des bandes
US6676062B1 (en) 1999-06-01 2004-01-13 Honigmann Industrielle Elektronik Gmbh Device for discharging webs
DE10081432B4 (de) * 1999-06-01 2007-04-05 Honigmann Industrielle Elektronik Gmbh Vorrichtung zum Abzug von Bändern
EP1647509A3 (fr) * 2004-10-13 2006-06-07 Winkler + Dünnebier Aktiengesellschaft Dispositif et méthode de raccordement des extrémités de deux bandes de matériau et/ou dispositif de déroulement d'une bande de matériau d'un rouleau d'alimentation
EP1693323A1 (fr) * 2005-02-22 2006-08-23 MAN Roland Druckmaschinen AG Changeur de rouleaux pour une machine rotative d'impression et procédé de régulation d'un changeur
CN101070130B (zh) * 2007-06-19 2010-05-19 国营红阳机械厂 具张力控制的卷材动态存贮设备
DE102008022702A1 (de) 2008-05-07 2009-11-19 Windmöller & Hölscher Kg Verfahren und eine Vorrichtung zum Abwickeln und zum Speichern von bahnförmigem Material
DE102008022702B4 (de) * 2008-05-07 2011-03-24 Windmöller & Hölscher Kg Verfahren und eine Vorrichtung zum Abwickeln und zum Speichern von bahnförmigem Material

Also Published As

Publication number Publication date
EP0169476B1 (fr) 1990-01-31
DE3575709D1 (de) 1990-03-08
DE3426976A1 (de) 1986-01-30
EP0169476A3 (en) 1988-02-17
DE3426976C2 (fr) 1988-12-15

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