EP0578159A2 - Device for accelerating a replacement web roll - Google Patents

Device for accelerating a replacement web roll Download PDF

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Publication number
EP0578159A2
EP0578159A2 EP93110655A EP93110655A EP0578159A2 EP 0578159 A2 EP0578159 A2 EP 0578159A2 EP 93110655 A EP93110655 A EP 93110655A EP 93110655 A EP93110655 A EP 93110655A EP 0578159 A2 EP0578159 A2 EP 0578159A2
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EP
European Patent Office
Prior art keywords
web
replacement
accelerating
web roll
winding roll
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.)
Withdrawn
Application number
EP93110655A
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German (de)
French (fr)
Other versions
EP0578159A3 (en
Inventor
Ulrich Seyffert
Roland Merz
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.)
Manroland AG
Original Assignee
MAN Roland Druckmaschinen AG
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 MAN Roland Druckmaschinen AG filed Critical MAN Roland Druckmaschinen AG
Publication of EP0578159A2 publication Critical patent/EP0578159A2/en
Publication of EP0578159A3 publication Critical patent/EP0578159A3/en
Withdrawn legal-status Critical Current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
    • B65H19/18—Attaching, e.g. pasting, the replacement web to the expiring web
    • B65H19/1884—Details for effecting a positive rotation of web roll, e.g. accelerating the replacement roll
    • B65H19/1889—Details for effecting a positive rotation of web roll, e.g. accelerating the replacement roll related to driving arrangements

Definitions

  • the invention relates to a device for accelerating a replacement winding roll according to the preamble of the claim.
  • the disadvantage of this solution is that the acceleration of the replacement winding roll does not depend on the setpoint, but depends on the roll weight and diameter as well as the roll width in different times, and the replacement winding roll does not move over while the running web is glued to the replacement winding roll a setpoint is performed exactly, which z.
  • the friction of the adhesive brush or roller can have a nagative effect on the peripheral speed of the replacement winding roll.
  • the invention has for its object to provide a device for accelerating a replacement winding reel according to the preamble of the parent claim, which with low cost and space requirements a desired, predetermined target value corresponding control of the speed both during acceleration of the replacement winding reel and during ensures their connection with the running web.
  • the particular advantage of the invention lies in the fact that a three-phase drive which is inexpensive and requires little space, while avoiding an expensive frequency converter, can be used for controlled speed control which is dependent on the predetermined setpoint during the acceleration and gluing phase of the replacement winding roll.
  • the invention will be explained in more detail using an exemplary embodiment.
  • the accompanying drawing shows the block diagram of a device for accelerating a replacement winding roll.
  • the acceleration device shown contains a schematically illustrated, two-armed roll stand 1, in which the old winding roll 2 with the running web 3 fed to a processing machine, for example a rotary printing press, and the web arm to be accelerated to web speed and equipped with an adhesive roller 4 and knife 5 6 are attached to the web 3 to be glued replacement winding roll 7.
  • a pivotable drive belt 9, driven by a three-phase motor 8, lies on the circumference of the latter.
  • the pulses generated by a web pulse generator 10 as a setpoint and a circumferential pulse generator 11 arranged on the drive belt 9 as an actual value are fed to a control unit 12 for speed comparison.
  • the acceleration of the replacement winding roll 7 is triggered with a signal 13 from an over-rated controller 14.
  • the difference between the actual value and the desired value is continuously compared with a run-up curve which is determined by a target function which can be predetermined in the control unit 12 and which contains the acceleration curve and time as well as the maximum values of winding roll diameter, weight and width as well as the web speed Low web speeds, both shorter acceleration times and the maximum acceleration time can be specified as a function of the optimization principle of the gluing process used in the higher-level controller 14.
  • the control unit 12 controls ignition pulses in the form of a phase control that are inserted into the individual phases L 1, L 2, L 3, of the three-phase motor 8 and power semiconductors 15; 16; 17 ;.
  • the peripheral speed is kept at the level of the path speed specified by the path pulse generator 10 and a signal 18 about the synchronization achieved is sent to the higher-order controller 14, whereupon the replacement winding roll 7 is connected to the running path 3 by the gluing process can.
  • control unit 12 In order to make the target function variable with as little hardware expenditure as possible in the control unit 12, it makes sense to use a digital computer circuit and to design the function of the control unit 12 in software.

Landscapes

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

Abstract

The invention relates to a device for accelerating a replacement web roll in winding apparatuses for web-shaped material with an A.C. motor. To achieve, with little outlay in terms of cost and space requirement the effect that, a speed control corresponding to the desired, specifiable setpoint value is ensured both during the acceleration of the replacement web roll and also during its splicing to the running web, a control unit controls, in the form of a phase control, power semiconductors which are in each case inserted into the individual phases of the A.C. motor, by means of firing pulses dependent on the comparison of the circumferential velocity of the replacement web roll with the web velocity and on a predetermined objective function. <IMAGE>

Description

Die Erfindung betrifft eine Vorrichtung zur Beschleunigung einer Ersatzwickelrolle gemäß dem Oberbegriff des Patentanspruches.The invention relates to a device for accelerating a replacement winding roll according to the preamble of the claim.

Bekannt ist es, die Ersatz-Wickelrolle mit einem Gleichstrommotor anzutreiben, dessen Drehzahl zur Synchronisation der Umfangsgeschwindigkeit der Ersatz-Wickelrolle mit der Bahngeschwindigkeit entsprechend dem gewünschten Sollwert durch einen Gleichstromsteiler geregelt wird.It is known to drive the replacement winding roll with a DC motor, the speed of which is regulated by a DC divider to synchronize the peripheral speed of the replacement winding roll with the web speed in accordance with the desired setpoint.

Dies kann auch in analoger Weise über einen Drehstrommotor unter Zuhilfenahme eines Frequenzumrichters erfolgen.This can also be done in an analogous manner using a three-phase motor with the aid of a frequency converter.

Nachteilig sind die hohen Kosten des Gleichstromantriebes und die relativ große Baugröße des Gleichstrommotors bei der ersten und die hohen Kosten des Frequenzumrichters bei der zweiten Lösung.Disadvantages are the high cost of the DC drive and the relatively large size of the DC motor in the first and the high cost of the frequency converter in the second solution.

Schließlich ist es auch bekannt (DD-PS 83165), die Synchronisation der Geschwindigkeiten über den Vergleich der Frequenzen eines Umfangs- und eines Bahnimpulsgebers mit Hilfe einer digitalen Zählerschaltung vorzunehmen, wobei der direkt an das Netz geschaltete Drehstrommotor beim Erreichen einer entsprechenden Umfangsgeschwindigkeit der Ersatz-Wickelrolle ab und bei deren Unterschreitung wieder zugeschaltet wird.Finally, it is also known (DD-PS 83165) to carry out the synchronization of the speeds by comparing the frequencies of a circumferential and a path pulse generator with the aid of a digital counter circuit, the three-phase motor connected directly to the mains when the equivalent circumferential speed of the replacement Winding roll off and when it is undershot again.

Nachteilig bei dieser Lösung ist, daß die Beschleunigung der Ersatz-Wickelrolle nicht sollwertabhängig , sondern abhängig vom Rollengewicht und -durchmesser sowie von der Rollenbreite in unterschiedlichen Zeiten erfolgt, und die Ersatz-Wickelrolle nicht während des Anklebens der ablaufenden Bahn an die Ersatz-Wickelrolle über einen Sollwert exakt geführt wird, wodurch sich z. B. die Reibung der Klebebürste bzw. -walze nagativ auf die Umfangsgeschwindigkeit der Ersatz-Wickelrolle auswirken kann. Die genannten Mängel stehen einer Optimierung des Klebevorganges entgegen.The disadvantage of this solution is that the acceleration of the replacement winding roll does not depend on the setpoint, but depends on the roll weight and diameter as well as the roll width in different times, and the replacement winding roll does not move over while the running web is glued to the replacement winding roll a setpoint is performed exactly, which z. B. the friction of the adhesive brush or roller can have a nagative effect on the peripheral speed of the replacement winding roll. The deficiencies mentioned stand in the way of optimizing the gluing process.

Der Erfindung liegt die Aufgabe zugrunde, eine Vorrichtung zum Beschleunigen einer Ersatz-Wickelrolle gemar dem Oberbegriff des Parentanspruches zu schaffen, die bei geringem Kosten und Platzbedarf eine dem gewünschten, vorgebbaren Sollwert entsprechende Regelung der Drehzahl sowohl während der Beschleunigung der Ersatz-Wickelrolle als auch während deren Verbindung mit der laufenden Bahn gewährleistet.The invention has for its object to provide a device for accelerating a replacement winding reel according to the preamble of the parent claim, which with low cost and space requirements a desired, predetermined target value corresponding control of the speed both during acceleration of the replacement winding reel and during ensures their connection with the running web.

Diese Aufgabe wird durch die kennzeichnenden Merkmale des Patentanspruches gelöst.This object is achieved by the characterizing features of the patent claim.

Der besondere Vorteil der Erfindung liegt darin, daß ein ansich kostengünstiger, wenig Platz erfordernder Drehstromantrieb unter Vermeidung eines teuren Frequenzumrichters für eine kontrollierte, vom vorgegebenen Sollwert abhängige Drehzahlregelung während der Beschleunigungs- und Anklebephase der Ersatz-Wickelrolle einsetzbar ist.The particular advantage of the invention lies in the fact that a three-phase drive which is inexpensive and requires little space, while avoiding an expensive frequency converter, can be used for controlled speed control which is dependent on the predetermined setpoint during the acceleration and gluing phase of the replacement winding roll.

Die Erfindung soll nachfolgend an einem Ausführungsbeispiel näher erläutert werden. Die zugehörige Zeichnung zeigt das Blockschaltbild einer Vorrichtung zum Beschleunigen einer Ersatz-Wickelrolle.The invention will be explained in more detail using an exemplary embodiment. The accompanying drawing shows the block diagram of a device for accelerating a replacement winding roll.

Die dargestellte Beschleunigungsvorrichtung enthält einen schematisch dargestellten, zweiarmigen Rollenständer 1, in dem die alte Wickelrolle 2 mit der ablaufenden einer Verarbeitungsmaschine, beispielsweise einer Rotationsdruckmaschine, zugeführten Bahn 3 sowie die auf Bahngeschwindigkeit zu beschleunigende und mit der Hilfe eines mit Klebewalze 4 und Messer 5 ausgerüsteten Klebearmes 6 an die Bahn 3 anzuklebende Ersatz-Wickelrolle 7 gelagert sind. Am Umfang letzterer liegt ein schwenkbarer, von einem Drehstrommotor 8 angetriebener Antriebsgurt 9 an.The acceleration device shown contains a schematically illustrated, two-armed roll stand 1, in which the old winding roll 2 with the running web 3 fed to a processing machine, for example a rotary printing press, and the web arm to be accelerated to web speed and equipped with an adhesive roller 4 and knife 5 6 are attached to the web 3 to be glued replacement winding roll 7. A pivotable drive belt 9, driven by a three-phase motor 8, lies on the circumference of the latter.

Die von einem Bahnimpulsgeber 10 als Sollwert und einem am Antriebsgurt 9 angeordneten Umfangsimpulsgeber 11 als Istwert erzeugten Impulse werden einer Steuereinheit 12 zum Geschwindigkeitsvergleich zugeleitet. Dabei wird die Beschleunigung der Ersatz-Wickelrolle 7 mit einem Signal 13 einer übergeodneten Steuerung 14 ausgelöst.The pulses generated by a web pulse generator 10 as a setpoint and a circumferential pulse generator 11 arranged on the drive belt 9 as an actual value are fed to a control unit 12 for speed comparison. The acceleration of the replacement winding roll 7 is triggered with a signal 13 from an over-rated controller 14.

Während der Beschleunigung wird die Differenz zwischen ist- und sollwert ständig mit einer durch eine in der Steuereinheit 12 vorgebbar festgelegte, die Beschleunigungskurve und -zeit sowie die Maximalwerte von Wickelrollendurchmesser, -gewicht und -breite sowie die Bahngeschwindigkeit enthaltende Zielfunktion bestimmten Hochlaufkurve verglichen, wobei für geringe Bahngeschwindigkeiten sowohl kürzere Beschleunigungszeiten als auch die maximale Beschleunigungszeit in Abhängigkeit von dem in der übergeordneten Steuerung 14 verwendeten Optimierungsprinzip des Anklebevorganges vorgegeben werden können.During the acceleration, the difference between the actual value and the desired value is continuously compared with a run-up curve which is determined by a target function which can be predetermined in the control unit 12 and which contains the acceleration curve and time as well as the maximum values of winding roll diameter, weight and width as well as the web speed Low web speeds, both shorter acceleration times and the maximum acceleration time can be specified as a function of the optimization principle of the gluing process used in the higher-level controller 14.

Die Steuereinheit 12 steuert mit vom Vergleich der Umfengsgeschwindigkeit der Ersatz-Wickelrolle 7 mit der Bahngeschwindigkeit sowie der vorgegebenen Zielfunktion abhängigen Zündimpulsen in Form einer Phasenanschnittsteuerung jeweils in die einzelnen Phasen L₁, L₂, L₃, des Drehstrommotors 8 eingefügte Leistungshalbleiter 15; 16; 17;.The control unit 12 controls ignition pulses in the form of a phase control that are inserted into the individual phases L 1, L 2, L 3, of the three-phase motor 8 and power semiconductors 15; 16; 17 ;.

Nach dem Hochlaufen des Drehstrommotors 8 wird die Umfangsgeschwindigkeit auf der Höhe der vom Bahnimpulsgeber 10 vorgegebenen Bahngeschwindigkeit gehalten und ein Signal 18 über die erreichte Synchronisation an die übergeordnete Steuerung 14 abgegeben, worauf die Ersatz-Wickelrolle 7 durch den Anklebevorgang mit der ablaufenden Bahn 3 verbunden werden kann.After the three-phase motor 8 has started up, the peripheral speed is kept at the level of the path speed specified by the path pulse generator 10 and a signal 18 about the synchronization achieved is sent to the higher-order controller 14, whereupon the replacement winding roll 7 is connected to the running path 3 by the gluing process can.

Möglich ist es auch, wie strichpunktiert in der Zeichnung dargestellt, die Ersatz-Wickelrolle 7 im Zentrum unter Wegfall des Antriebsgurtes 9 durch den Drehstrommotor 8' anzutreiben und den Umfangsimpulsgeber 11' als Tastrolle auf den Umfang der Ersatz-Wickelrolle 7 direkt aufzusetzen.It is also possible, as shown in dash-dotted lines in the drawing, to drive the replacement winding roller 7 in the center with the three-phase motor 8 'omitting the drive belt 9 and to place the circumferential pulse generator 11' as a sensing roller on the circumference of the replacement winding roller 7 directly.

Um die Zielfunktion bei möglichst geringem Hardwaraufwand der Steuereinheit 12 variabel zu gestalten, ist es sinnvoll, eine digitale Rechnerschaltung einzusetzen und die Funktion der Steuereinheit 12 softwaremäßig zu gestalten.In order to make the target function variable with as little hardware expenditure as possible in the control unit 12, it makes sense to use a digital computer circuit and to design the function of the control unit 12 in software.

Claims (1)

Vorrichtung zur Beschleunigung einer Ersatz-Wickelrolle in Abwickeleinrichtungen für bahnförmiges Gut mit einem Drehstrommotor, gekennzeichnet dadurch, daß eine Steuereinheit (12) mit vom Vergleich der Umfangsgeschwindigkeit der Ersatz-Wickelrolle (7) mit der Bahngeschwindigkeit sowie von einer vorgegebenen Zielfunktion abhängigen Zündimpulsen jeweils in die einzelnen Phasen (L₁, L₂, L₃) des Drehstrommotors (8' 8') eingefügte Leistungshalbleiter (15; 16; 17) in Form einer Phasenanschnittsteuerung steuert.Device for accelerating a replacement winding roll in unwinding devices for web-like material with a three-phase motor, characterized in that a control unit (12) with ignition pulses dependent on the comparison of the peripheral speed of the replacement winding roll (7) with the web speed and on a predetermined target function in each case individual phases (L₁, L₂, L₃) of the three-phase motor (8 '8') inserted power semiconductors (15; 16; 17) controls in the form of a phase control.
EP93110655A 1992-07-07 1993-07-03 Device for accelerating a replacement web roll Withdrawn EP0578159A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4222251 1992-07-07
DE19924222251 DE4222251A1 (en) 1992-07-07 1992-07-07 Device for accelerating a replacement winding roll

Publications (2)

Publication Number Publication Date
EP0578159A2 true EP0578159A2 (en) 1994-01-12
EP0578159A3 EP0578159A3 (en) 1995-09-20

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EP93110655A Withdrawn EP0578159A3 (en) 1992-07-07 1993-07-03 Device for accelerating a replacement web roll

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Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0720581B2 (en) * 1994-06-16 2002-04-24 Metso Paper, Inc. Splicing device for a continuous unwind stand
US5732872A (en) 1994-06-17 1998-03-31 Heartport, Inc. Surgical stapling instrument
US5881943A (en) 1994-06-17 1999-03-16 Heartport, Inc. Surgical anastomosis apparatus and method thereof
DE19820764C2 (en) * 1998-05-08 2003-08-28 Roland Man Druckmasch unwinding

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD83165A (en) *
DE2651620A1 (en) * 1975-12-30 1977-07-14 Polygraph Leipzig ARRANGEMENT FOR SWITCHING OFF THE DRIVE OF A WINDING REEL
EP0079169A1 (en) * 1981-10-27 1983-05-18 Steadfold Limited A power controller
EP0092937A1 (en) * 1982-04-22 1983-11-02 The Babcock & Wilcox Company Three phase variable frequency constant torque controllers for high torque servo positioners
EP0228807A1 (en) * 1985-12-03 1987-07-15 Beta Instrument Company Limited Apparatus for tension control of a flexible material during winding or unwinding from a drum or reel
DD250701A1 (en) * 1986-07-04 1987-10-21 Polygraph Leipzig ARRANGEMENT FOR ACCELERATING A REPLACEMENT ROLLER
EP0248448A1 (en) * 1986-06-06 1987-12-09 MSI Technik GmbH Polyphase phase angle control
US4931715A (en) * 1986-11-03 1990-06-05 Teledyne Inet Synchronous motor torque control device

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4826119B1 (en) * 1965-02-01 1973-08-06
DE3136459C2 (en) * 1981-09-14 1987-01-08 Siemens AG, 1000 Berlin und 8000 München Device for controlling an electric axle winding DC drive
DD218783A3 (en) * 1982-07-23 1985-02-13 Strickmaschinenbau Kmst Veb CONTROL DEVICE FOR A PRODUCTION DEVICE FOR KNITTING MACHINES, IN PARTICULAR CIRCULAR KNITTING MACHINES

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD83165A (en) *
DE2651620A1 (en) * 1975-12-30 1977-07-14 Polygraph Leipzig ARRANGEMENT FOR SWITCHING OFF THE DRIVE OF A WINDING REEL
EP0079169A1 (en) * 1981-10-27 1983-05-18 Steadfold Limited A power controller
EP0092937A1 (en) * 1982-04-22 1983-11-02 The Babcock & Wilcox Company Three phase variable frequency constant torque controllers for high torque servo positioners
EP0228807A1 (en) * 1985-12-03 1987-07-15 Beta Instrument Company Limited Apparatus for tension control of a flexible material during winding or unwinding from a drum or reel
EP0248448A1 (en) * 1986-06-06 1987-12-09 MSI Technik GmbH Polyphase phase angle control
DD250701A1 (en) * 1986-07-04 1987-10-21 Polygraph Leipzig ARRANGEMENT FOR ACCELERATING A REPLACEMENT ROLLER
US4931715A (en) * 1986-11-03 1990-06-05 Teledyne Inet Synchronous motor torque control device

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Publication number Publication date
DE4222251A1 (en) 1994-01-13
EP0578159A3 (en) 1995-09-20

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