EP2905246A1 - Procédé et système d'ajustement de la tension de rembobinage pour une machine comprenant une unité de rembobinage, programme d'ordinateur mettant en oeuvre le procédé et machine comprenant une unité de rembobinage - Google Patents

Procédé et système d'ajustement de la tension de rembobinage pour une machine comprenant une unité de rembobinage, programme d'ordinateur mettant en oeuvre le procédé et machine comprenant une unité de rembobinage Download PDF

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Publication number
EP2905246A1
EP2905246A1 EP13845624.9A EP13845624A EP2905246A1 EP 2905246 A1 EP2905246 A1 EP 2905246A1 EP 13845624 A EP13845624 A EP 13845624A EP 2905246 A1 EP2905246 A1 EP 2905246A1
Authority
EP
European Patent Office
Prior art keywords
torque
mandrel
motor
rewinding
tension
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
EP13845624.9A
Other languages
German (de)
English (en)
Other versions
EP2905246B1 (fr
EP2905246A4 (fr
Inventor
Joaquín AMAT CANO
Jordi Prat Gil
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.)
Comexi Group Industries SA
Original Assignee
Comexi Group Industries SA
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 Comexi Group Industries SA filed Critical Comexi Group Industries SA
Publication of EP2905246A1 publication Critical patent/EP2905246A1/fr
Publication of EP2905246A4 publication Critical patent/EP2905246A4/fr
Application granted granted Critical
Publication of EP2905246B1 publication Critical patent/EP2905246B1/fr
Not-in-force 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
    • B65H18/103—Reel-to-reel type web winding and unwinding mechanisms
    • 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
    • B65H23/1955—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 and controlling web tension
    • 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
    • B65H23/06—Registering, tensioning, smoothing or guiding webs longitudinally by retarding devices, e.g. acting on web-roll spindle
    • B65H23/063—Registering, tensioning, smoothing or guiding webs longitudinally by retarding devices, e.g. acting on web-roll spindle and controlling web tension
    • 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
    • B65H23/1806—Registering, tensioning, smoothing or guiding webs longitudinally by controlling or regulating the web-advancing mechanism, e.g. mechanism acting on the running web in reel-to-reel type web winding and unwinding mechanism, e.g. mechanism acting on web-roll 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
    • 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
    • B65H23/188—Registering, tensioning, smoothing or guiding webs longitudinally by controlling or regulating the web-advancing mechanism, e.g. mechanism acting on the running web in connection with running-web
    • B65H23/1888—Registering, tensioning, smoothing or guiding webs longitudinally by controlling or regulating the web-advancing mechanism, e.g. mechanism acting on the running web in connection with running-web and controlling web tension
    • 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
    • B65H2513/00—Dynamic entities; Timing aspects
    • B65H2513/20—Acceleration or deceleration
    • B65H2513/23—Acceleration or deceleration angular
    • 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
    • B65H2515/10—Mass, e.g. mass flow rate; Weight; Inertia
    • 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
    • B65H2515/30—Forces; Stresses
    • B65H2515/32—Torque e.g. braking torque
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2557/00—Means for control not provided for in groups B65H2551/00 - B65H2555/00
    • B65H2557/20—Calculating means; Controlling methods
    • B65H2557/24—Calculating methods; Mathematic models
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2557/00—Means for control not provided for in groups B65H2551/00 - B65H2555/00
    • B65H2557/20—Calculating means; Controlling methods
    • B65H2557/26—Calculating means; Controlling methods with key characteristics based on open loop control

Definitions

  • the present invention relates to an adjustment method for adjusting tension during a rewinding operation for a machine including a rewinding station, and more particularly to a sensor-less open-loop adjustment method for adjusting tension based on speed control with limited rotational torque.
  • the invention relates to an adjustment system for adjusting tension during rewinding for a machine which includes a rewinding station suitable for implementing the method of the first aspect.
  • the invention relates to a computer program suitable for implementing the method of the first aspect.
  • the invention relates to a machine which includes a rewinding station implementing said adjustment method, incorporates the adjustment system and/or runs the computer program.
  • Patent document US4280669 proposes an automatic rewinding machine comprising, among others, a first mandrel and a second mandrel arranged consecutively and associated with respective first and second motors for rotating in the same direction so that a web wound around the first mandrel is unwound from same and rewound on the second rewinding mandrel with an amount of tension that can be adjusted by an adjustment method, consisting of applying on the second mandrel or rewinding mandrel a specific torque and arranging a guide mandrel in contact with the web to exert an inward radial force on the web being wound on the rewinding mandrel when the guide mandrel is rotated in a direction opposite that of the rewinding mandrel, such that tension in said web increases.
  • the present invention provides an adjustment method for adjusting tension during rewinding for a machine which includes a rewinding station, said rewinding station being of the type comprising at least a first mandrel and a second mandrel associated with respective first and second motors for rotating in the same direction so that a web wound around the first mandrel is unwound from same and rewound on the second mandrel with an amount of tension that can be adjusted by the adjustment method, which method comprises controlling the speed of at least the second motor.
  • the method proposed by the first aspect of the invention is characterized in that, unlike the methods known in the state of the art, it is a sensor-less open-loop adjustment method for adjusting tension which comprises performing speed control on the second rewinding motor based on or by establishing a rotational torque of said motor, in the mentioned direction of rotation, limited to calculated values.
  • the adjustment method comprises calculating said limited rotational torque values from the prior calculation of the following types of torque:
  • the method comprises calculating said rolling or friction torque by previously registering the torque used by the second motor throughout its entire range of use in revolutions of rotation and consulting said register for the rotational speed of the second motor.
  • the method comprises calculating said inertia torque by obtaining said coefficient of acceleration for virtual shafts synchronized with real rotating shafts and by adding the load supported by the second mandrel.
  • the method comprises calculating said load by means of calculating the moment of inertia thereof from dimensional data, including diameter and width, and physical data, including weight, of the rewound roll, and from the density of the reel calculated from said data, and multiplying the calculated moment of inertia value by the coefficient of acceleration in order to obtain the inertia torque.
  • the method comprises calculating said tension torque from a required force setpoint and from the radius or diameter of the web roll or rewound roll.
  • the method comprises calculating the diameter of the rewound roll by directly inferring it from the position of the second shaft or of an element that can be moved therewith during said moving away.
  • said element that can move with the second shaft is a servomotor carrying out the mentioned moving away according to the diameter of the rewound web.
  • the method comprises calculating the limited rotational torque values by adding up the values calculated for friction torque, inertia torque and tension torque.
  • the invention provides an adjustment system for adjusting tension during rewinding for a machine which includes a rewinding station comprising at least a first mandrel and a second mandrel associated with respective first and second motors for rotating in the same direction so that a web wound around the first mandrel is unwound from same and rewound on the second mandrel with an amount of tension that can be adjusted by the adjustment system, where the adjustment system comprises control means for controlling the speed of at least the second motor.
  • the adjustment system proposed by the second aspect of the invention is characteristically a sensor-less open-loop adjustment system, where the control means perform speed control on the second motor with rotational torque limited to calculated values.
  • the first and second mandrels have respective rotating shafts parallel to one another, where the first shaft and/or second shaft can move away from the second shaft and/or first shaft, respectively, as the diameter of the rewound web increases, by means of actuating means including at least one servomotor.
  • the motors of the mandrels are preferably direct drive motors mounted directly on the rotating shafts of the mandrels without substantially more friction than that of the motor bearings themselves.
  • Control means are configured for calculating the limited rotational torque values by implementing the method of the first aspect.
  • the invention provides a computer program comprising program instructions for making a computation system, generally a PLC, implement the method of the first aspect.
  • the program of the third aspect can be run by a computation system that is part of the control means of the system proposed by the second aspect of the invention.
  • the invention provides a machine which includes a rewinding station, which applies the adjustment method of the first aspect and/or incorporates the adjustment system of the second aspect and/or comprises control means including a computation system running the computer program of the third aspect.
  • the computation system is a programmable logic controller, or PLC.
  • the machine is a rewinding machine, or a machine that furthermore includes other functions to be performed between the unwinding and rewinding phases, comprising to that end between the first and second mandrel a step for longitudinally slitting and/or printing and/or laminating and/or perforating the unwound/rewound web.
  • the method and system of the invention solve the problems relating to the path of the material, the need for customized adjustment, and regulation fluctuations, while at the same time they reduce costs by dispensing with tension reading elements.
  • the project is carried out in the Comexi Proslit S-Turret slitter-rewinder.
  • Vascat MDD motors which allow directly coupling the expandable rewinding shaft to the shaft of the motor, forming a sturdy, load-free assembly, have been used.
  • Figure 1 shows such S-Turret machine, with the rewinding station including the mentioned first mandrel 1 and second mandrel 2 associated with respective first and second motors (not illustrated) for rotating in the same direction so that the web L wound around the first mandrel 1 is unwound from same and rewound on the second mandrel 2 with an amount of tension that can be adjusted by the adjustment system (not illustrated).
  • the rewinder of this machine consists of two motors mounted on a rotating turret so that they can work in an alternating manner. Said motors are responsible for rewinding the material at a regulated and constant tension. Due to regulating difficulties by means of closed-loops with load cells involved with the different possible paths of material, the present invention proposes open-loop adjustment by using torque-limiting control means.
  • This type of control allows not being conditioned by the passing of the material along a specific path which includes a reading element (load cells, compensator, etc.), while at the same time prevents bothersome fluctuations due to regulation itself.
  • the motor is controlled by speed control but with torque being limited to calculated values.
  • the motors to be regulated are direct drive motors mounted directly on the shaft of the reel, without any friction other than that of the motor bearings themselves, thereby preventing losses of torque in pulleys, gears, chains or other transmission elements.
  • the speed applied to the motor is the driving machine speed plus an excess speed of 10 m/min, as illustrated in the diagram of Figure 2 , which shows the different control blocks or steps used for carrying out the adjustment of the rewinding tension according to the present invention.
  • This torque is primarily based on the mechanical construction that is coupled to the motor to drive the load. It depends entirely on this assembly, and in relation to this particular case, the value is minimal and furthermore very stable.
  • the resulting torque/revolutions graph serves to anticipate the torque limit throughout the entire range of revolutions of the motor.
  • Siemens Sinamics equipment provides a function that aids in calculating this torque. It is the 'Friction characteristic' function, which allows capturing the torque used by the motor throughout its entire range of use in revolutions.
  • This function only requires specifying the limit of revolutions at which the motor will work.
  • the system starts up the motor, without a load, and registers the current torque as the speed gradually increases.
  • a torque/revolutions graph which will be stored in the equipment is thereby obtained.
  • the result of this graph will provide the resulting friction torque according to the speed at which the motor rotates.
  • the torque value for the current speed is reflected in parameter r3841, so this will be the value to be taken into account as the friction torque of the method and system of the present invention for the embodiment herein described.
  • This torque is based on adding the torque necessary in order to accelerate. To accelerate a mass, depending on the required coefficient of acceleration, it will be necessary to apply additional torque in order to reach a required speed within a desired time.
  • the S-Turret electronics provide the possibility of synchronizing real shafts with virtual shafts (which are perfect as regards reactions). This synchronization provides real values of the degree of acceleration of the assembly, so it is not difficult to calculate the inertia torque of the mass that constitutes the load, which must be added at the time of acceleration.
  • This additional torque, or acceleration torque also depends on the mass of the load to be accelerated.
  • This torque there are different functions in Siemens software that will help.
  • the moment of inertia of the load is calculated by means of the 'Moment Inertia' block included in the CFC programming software in DCC.
  • Nms 2 the resulting moment of inertia of the reel is given in Nms 2 .
  • This result which refers to the mass of the reel, is multiplied by the coefficient of acceleration (1/s 2 ) in order to obtain the torque in Nm.
  • This torque is the one that is really applied to the motor because it is the torque necessary for tensing the material, and it is calculated from the required setpoint and from the radius of the roll to be wound. Calculation comprises multiplying the setpoint value entered by the operator (N) by the radius of the reel (m) in order to obtain the Nm necessary for limiting the motor.
  • the diameter of the reel also affects the calculation of the inertia torque because in order to calculate the value of this torque, the mass of the element to be accelerated, which is directly related to the diameter of the reel, must be taken into account.
  • the rewinding shaft moves longitudinally via two synchronized servomotors as diameter increases.
  • the current position of the servomotors directly expresses the radius of the reel, conferring absolute stability to the value.
  • the sum of these three calculated torque values is sent to the motor regulating equipment as torque limit, which will tense the web with the desired values.
  • the value of said sum, in Nm is sent to the block indicated as torque limit, where the torque obtained from the speed loop is limited with such value, the limited value being applied to one of the inputs of the control block, in this case PI (proportional-integral), of that indicated as torque loop, in the other input of which a real torque monitoring signal is received, and based on which the torque to be applied to the motor is controlled, in this case by means of a corresponding current signal (indicated by its units "Amperes" in Figure 2 ) to feed the motor.
  • PI proportional-integral
  • This torque limit must act only in the direction of rotation of the material, leaving the opposite direction with the maximum limit of the motor to allow braking in the event of a quick shut-down, with the maximum torque available.
  • the friction torque is stable as a result of the use of direct drive motors, which minimize friction and make such friction more stable over time. In a system with a different type of transmission, it cannot be assured that with the passage of time this friction will remain equally stable compared to a system such as the S-Turret system.
  • the inertia torque is stable because the coefficient of acceleration is obtained directly from the Virtual Master, or virtual shaft working at the machine speed, in an immediate and precise manner.
  • the tension torque is stable as a result of the system for obtaining diameter of the reel.
  • diameter is obtained from a calculation between speeds (which tends to fluctuate), or through an external sensor (which obtains erroneous data due to irregularities on the surface of the reel or differences between different types of material).
  • S-Turret diameter is obtained through the position of the servomotors which are responsible for the transverse movement of the winding shaft. This diameter is completely stable, without interferences, and absolutely real, which confers enviable stability to the calculation of the tension torque.

Landscapes

  • Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)
EP13845624.9A 2012-10-08 2013-09-27 Procédé et système d'ajustement de la tension de rembobinage pour une machine comprenant une unité de rembobinage Not-in-force EP2905246B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ES201200985A ES2482390B1 (es) 2012-10-08 2012-10-08 Método y sistema de ajuste de tensión en rebobinado para una máquina con una estación de rebobinado, programa de ordenador que implementa el método y máquina con estación de rebobinado
PCT/ES2013/000213 WO2014057142A1 (fr) 2012-10-08 2013-09-27 Procédé et système d'ajustement de la tension de rembobinage pour une machine comprenant une unité de rembobinage, programme d'ordinateur mettant en oeuvre le procédé et machine comprenant une unité de rembobinage

Publications (3)

Publication Number Publication Date
EP2905246A1 true EP2905246A1 (fr) 2015-08-12
EP2905246A4 EP2905246A4 (fr) 2016-06-29
EP2905246B1 EP2905246B1 (fr) 2018-02-28

Family

ID=50476962

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13845624.9A Not-in-force EP2905246B1 (fr) 2012-10-08 2013-09-27 Procédé et système d'ajustement de la tension de rembobinage pour une machine comprenant une unité de rembobinage

Country Status (3)

Country Link
EP (1) EP2905246B1 (fr)
ES (2) ES2482390B1 (fr)
WO (1) WO2014057142A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105253677A (zh) * 2013-12-31 2016-01-20 黄聪伟 具有转盘复卷装置的单体生料带自动复卷生产线
WO2017108472A1 (fr) * 2015-12-22 2017-06-29 Schneider Electric Industries Sas Entraînement à moteur électrique et procédé pour faire fonctionner un moteur

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3595495A (en) 1969-03-17 1971-07-27 Guardian Packaging Corp Eddy current clutch actuated rewinder
GB2053863B (en) * 1979-07-07 1983-03-02 Emi Ltd Torque limiting drive for winding web rolls
US4280669A (en) 1980-01-21 1981-07-28 Magna-Graphics Corporation Automatic web rewinder for tensioned web
JPS59138556A (ja) * 1983-01-27 1984-08-09 Nippon Telegr & Teleph Corp <Ntt> テ−プ状態信号検出装置
DE4139587C2 (de) * 1991-11-30 1993-10-07 Lapp U I Gmbh & Co Kg Verfahren zum Umspulen eines Kabels oder anderen Wickelgutes
JP2002302312A (ja) * 2001-04-04 2002-10-18 Toshiba Ge Automation Systems Corp 巻取制御装置
EP1790599B1 (fr) * 2003-03-19 2010-08-25 Voith Patent GmbH Machine ou section de machine dotée d'au moins un électromoteur destiné à l'engrenage direct d'un axe d'enroulement d'une bobine d'enroulement, en particulier destiné à l'utilisation dans l'industrie du papier
US20090016797A1 (en) * 2007-07-11 2009-01-15 Hewlett-Packard Development Company, L.P. Controlling tension in roll-based print media
FI123687B (fi) * 2010-11-18 2013-09-30 Abb Oy Menetelmä ja järjestely rullainkäytön yhteydessä

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105253677A (zh) * 2013-12-31 2016-01-20 黄聪伟 具有转盘复卷装置的单体生料带自动复卷生产线
CN105253677B (zh) * 2013-12-31 2017-01-25 黄聪伟 具有转盘复卷装置的单体生料带自动复卷生产线
WO2017108472A1 (fr) * 2015-12-22 2017-06-29 Schneider Electric Industries Sas Entraînement à moteur électrique et procédé pour faire fonctionner un moteur

Also Published As

Publication number Publication date
ES2669753T3 (es) 2018-05-29
WO2014057142A1 (fr) 2014-04-17
ES2482390B1 (es) 2015-05-12
EP2905246B1 (fr) 2018-02-28
ES2482390A1 (es) 2014-08-01
EP2905246A4 (fr) 2016-06-29

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