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WO1987007049A1 - Dispositif electrique pour reguler la tension dans un materiau enroule - Google Patents

Dispositif electrique pour reguler la tension dans un materiau enroule Download PDF

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Publication number
WO1987007049A1
WO1987007049A1 PCT/EP1987/000228 EP8700228W WO8707049A1 WO 1987007049 A1 WO1987007049 A1 WO 1987007049A1 EP 8700228 W EP8700228 W EP 8700228W WO 8707049 A1 WO8707049 A1 WO 8707049A1
Authority
WO
WIPO (PCT)
Prior art keywords
roller
winding
carrier
tensile force
control device
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/EP1987/000228
Other languages
German (de)
English (en)
Inventor
Siegfried Winkelmann
Gerhard FLÖRCHINGER
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.)
ZF Friedrichshafen AG
Original Assignee
ZF Friedrichshafen 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 ZF Friedrichshafen AG filed Critical ZF Friedrichshafen AG
Publication of WO1987007049A1 publication Critical patent/WO1987007049A1/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
    • B65H23/00—Registering, tensioning, smoothing or guiding webs
    • B65H23/04—Registering, tensioning, smoothing or guiding webs longitudinally
    • B65H23/044—Sensing 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
    • B65H23/066—Electrical brake devices therefor
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D15/00—Control of mechanical force or stress; Control of mechanical pressure
    • G05D15/01—Control of mechanical force or stress; Control of mechanical pressure characterised by the use of electric means
    • 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
    • B65H2301/30—Orientation, displacement, position of the handled material
    • B65H2301/31—Features of transport path
    • B65H2301/311—Features of transport path for transport path in plane of handled material, e.g. geometry
    • B65H2301/3112—S-shaped

Definitions

  • the invention relates to an electrical traction control device for winding processes.
  • control devices consist of a measuring element for detecting the change in tensile force in the winding material and of an actuator acting on the winding roller, which is regulated by a controller in such a way that the the tensile force attacking the winding material is kept constant during winding or unwinding (see “TIDLAND brake” from TIDLAND GmbH, D-4422 Ahaus or “tensile regulator” from ICM, I-20141 Milano).
  • the measuring element usually consists of a so-called dancer roll or roller.
  • the roller or roller is held with its axis at the free end of a rocker, the axis of rotation of which is fixed.
  • the tensile force exerted on the winding material is determined by the weight acting on the roller or roller and remains unchanged as long as the roller or roller is in an unchanged floating position.
  • a measuring element generally a rotary value transmitter, such as a potentiometer, so that the deviation is immediately available as an electrical signal.
  • the driving force exerted on the take-up reel is then increased or decreased, or the braking action of the brake provided on a take-up reel is increased or decreased until the desired target tensile force is restored in the material to be wound.
  • Regulating devices with friction slip clutches have become known for the control of winding operations. These always have the disadvantage that the difference between static and sliding friction leads to the torque peak when changing from synchronous to slip operation.
  • Electromagnetic disc brakes are generally used as adjustable, adjustable brakes for braking an unwinding roll, depending on the tensile force.
  • Controllers are used to evaluate the tensile force measured via the dancer roll or roller, depending on the permissible tolerances of the tensile force acting on the winding material with a simple two-point characteristic up to a PID characteristic (proportional-integral-differential characteristic).
  • a dancer roller or roller for measuring the tensile force has the disadvantage that a space requirement is required for the loop with the floating roller or roller, which is not available in many applications.
  • the space requirement is possibly increased if the tractive force should be adjustable in a more or less large area, for example with the aid of a spring balance or the like.
  • tensile force peaks can occur in the winding material, particularly in the case of control processes in the lower speed range of the unwinding roller, which result from short-term changes between states of sticking and sliding conditions on the Brake surfaces come from.
  • the tensile force peaks lead to brief stretching of the winding material and, as mentioned, can result in errors in the end product in subsequent operations.
  • the object of the invention is to provide a tensile force control device for winding processes, the elements of which occur. Tensile force peaks in the winding material can be reliably prevented and can be accommodated with little wear and space-saving in the essential area of the winding roll itself.
  • the device should work reliably and economically and still be simple in construction.
  • a hysteresis clutch or hysteresis brake is provided as an actuator for changing the rotational movement of the winding roller, i.e. for influencing the driving force on a winding roller or the braking action on an unwinding roller, the hysteresis part of which is preferably coupled to the winding roller and the excitation part of which Stand of the winding roll is connected.
  • a hysteresis clutch or brake enables the torque or braking torque acting on the winding roll to be continuously adapted to the respective requirements by changing the excitation current in the coil of the excitation part.
  • the excitation current is changed via a controller, which receives its input signals from a new type of measuring element for the detection of the tensile force deviation in the winding material (see also: "The hysteresis coupling, a new and versatile drive element", electrotechnical magazine 06.65).
  • the measuring element is constructed from two rollers or rollers, which are wound around in opposite directions by the material to be wound.
  • the rollers are rotatably mounted on a common carrier.
  • the carrier itself is pivoted about an axis located in the common center of gravity of the rollers or rollers on the housing of the winding roller against a spring force at least in a predetermined range.
  • the material to be wound is guided in a loop around the rolls or rollers so that they rotate in opposite directions during the winding process.
  • the normal guidance of the winding material is such that the tensile force acts at an approximately right angle on the connecting line of the roller or roller axes, so that this unit is pivoted against a spring force when the tensile force occurring in the winding material is the restoring force of the roller or
  • the spring unit preloading spring force exceeds.
  • a pivoting of the roller carrier is measured by a sensor in the form of a rotary angle sensor, preferably in the form of a simple potentiometer, and is supplied to the controller as an electrical signal.
  • the respective sampled signal is compared in the controller with a setpoint and converted into a corresponding current change for the excitation coil of the hysteresis clutch or brake.
  • FIG. 2 is a front view of an embodiment of the measuring element
  • Fig. 3 shows a longitudinal section through the measuring element according to Fig. 2 and
  • Fig. 4 is a rear view of the measuring element.
  • an unwinding roll 2 is shown schematically in the drawing, from which the winding material 3 is drawn off.
  • the unwinding roll 2 can be braked to a greater or lesser extent with the aid of a hysteresis brake 4 which is only indicated schematically and which is preferably arranged directly on the axis of the unwinding roll.
  • a measuring element 5 is used to measure the more or less large tensile force exerted on the winding material 3, which is represented by an arrow at the right end of the winding material 3.
  • This measuring element 5 consists of two deflection rollers 6 and 7, which are rotatable on a disk-shaped roller carrier 8 are attached.
  • the winding material 3 is wrapped around the upper roller 6 on the right and guided around the lower roller 7 on the left side.
  • the two rollers rotate in opposite directions when the winding material 3 is pulled off.
  • the roller carrier 8 is pivotally mounted about an axis 22 lying in the common center of gravity of the two rollers 6 and 7 of the disk-shaped roller carrier 8.
  • a lever 9 is attached, which is biased by a spring 10 so that it tries to turn the unit roller carrier 8, rollers 6 and 7 and lever 9 to the right. If a pull is exerted on the material to be wound, the position shown in the drawing is set approximately, ie, the tensile force in the material to be wound 3 corresponds exactly to the tensile force of the spring 10, which is measured directly or via a sensor (not shown) can.
  • the position of the lever 9 or the force of the spring 10 is fed as an actual value for the tensile force to a controller 11, which in the selected exemplary embodiment is designed as an electronic analog PID controller.
  • the controller receives the setpoint from an adjustable setpoint generator 12 as a comparison value.
  • the preload can be set by a screw (not shown).
  • the controller 11 After comparing the actual value and the target value, the controller 11 outputs the corresponding control current for the hysteresis clutch 4 to the latter.
  • FIG. 1 the structural design of a measuring element, as it is generally designated 5 in FIG. 1, is shown in three views. 2 shows the front view, FIG. 3 shows a longitudinal section through the measuring element 5 and FIG. 4 shows the rear view.
  • two deflection rollers 6 and 7 are each freely rotatable on axes 16 and 17, around which the winding material 3 is guided as shown.
  • the rollers 6 and 7 are rotatably mounted on the common roller carrier 8.
  • the roller carrier itself is rotatably mounted on the axis 22, which is rotatably mounted in roller bearings 23 and 24 in a housing 18.
  • the housing is stationary, possibly connected to the stand of the unwinding roll.
  • the shaft 22 carries the lever arm 9 (FIG. 1), which is pivoted in a section of the housing 18 with the shaft 22.
  • a potentiometer 14 is provided, via which the position of the unit of the rollers 6 and 7 with roller carriers 8 is electrically scanned. The electrical value is fed to the controller 11 (FIG. 1) via an output cable 15.
  • FIG. 4 shows the rear view of the measuring element 5 with the parts of potentiometer 14, output cable 15, holding part 20, housing 18, lever arms 9 and spring 10 already explained with reference to FIGS. 2 and 3.
  • the invention was explained on the basis of a specific exemplary embodiment in the case of regulating the tensile force during an unwinding process and, as the dimensions of the rolls 6 and 7 show, strand-like winding material.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)

Abstract

Dispositif électrique pour réguler la tension dans un matériau enroulé sur ou déroulé d'un cylindre enrouleur fixe tournant autour de son axe. Conformément à l'état de la technique, le dispositif comporte un élément pour mesurer l'écart, par rapport à une valeur spécifiée prédéterminée, de la tension dans le matériau enroulé ou déroulé, et un élément de réglage, régulable par un régulateur, sur le cylindre enrouleur, et servant à faire varier la force d'entraînement ou de freinage. L'élément de réglage prévu pour entraîner ou freiner le cylindre enrouleur est un embrayage ou un frein à hystérèse, dont la force de transmission ou de freinage est variable en continu. L'élément de mesure est constitué de deux rouleaux de guidage qui reçoivent le matériau, lesdits rouleaux étant supportés sur un support commun qui est disposé autour d'un axe situé dans le centre de gravité commun des rouleaux et peut être pivoté contre la force d'un ressort. Le matériau est guidé selon une boucle autour des deux rouleaux de guidage de telle manière que la tension exercée par le matériau provoque le pivotement du support des rouleaux contre la force d'un ressort. Le pivotement du support est détecté électriquement et transmis par l'intermédiaire d'un régulateur permettant de réguler l'embrayage ou le frein à hystérèse.
PCT/EP1987/000228 1986-05-09 1987-04-25 Dispositif electrique pour reguler la tension dans un materiau enroule Ceased WO1987007049A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP8600270 1986-05-09
LUPCT/EP86/00270 1986-05-09

Publications (1)

Publication Number Publication Date
WO1987007049A1 true WO1987007049A1 (fr) 1987-11-19

Family

ID=8165117

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1987/000228 Ceased WO1987007049A1 (fr) 1986-05-09 1987-04-25 Dispositif electrique pour reguler la tension dans un materiau enroule

Country Status (2)

Country Link
DE (1) DE3713915A1 (fr)
WO (1) WO1987007049A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0477422A1 (fr) * 1990-09-28 1992-04-01 Siemens Aktiengesellschaft Dévidoir - Régulation dynamométrique
DE19522295A1 (de) * 1995-06-20 1997-01-02 Pago Ag Buchs Sg Verfahren und Vorrichtung zur Regelung der Zugspannung eines Etikettenbandes in einer Etikettiervorrichtung
ITTO20130287A1 (it) * 2013-04-09 2014-10-10 Proteco S R L Macchina nastratrice con dispositivo di controllo della quantita' di materiale in nastro residua
ITTO20130286A1 (it) * 2013-04-09 2014-10-10 Proteco S R L Dispositivo di controllo della tensione di tesatura di un materiale in nastro avvolto su una bobina e macchina nastratrice incorporante detto dispositivo
ITTO20130285A1 (it) * 2013-04-09 2014-10-10 Proteco S R L Macchina nastratrice

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4419307A1 (de) * 1994-06-01 1994-12-15 Fischer Stefan Dipl Ing Hysteresebremse zur Bremskrafteinstellung bei ortsfesten Trainingsgeräten und Ergometern
DE19512963C2 (de) * 1995-04-10 2001-07-12 Honigmann Ind Elektronik Gmbh Vorrichtung zum Abziehen von Bändern
DE29509711U1 (de) * 1995-06-14 1996-10-17 Stolberger Maschinenfabrik GmbH & Co KG, 52224 Stolberg Vorrichtung zum Bebändern eines Kabels
DE10233469B4 (de) * 2002-07-24 2005-05-12 Koenig & Bauer Ag Strangführungsvorrichtung

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE517154A (fr) *
US3276705A (en) * 1964-01-31 1966-10-04 Porter W Erickson Winding machine
GB1110718A (en) * 1965-10-22 1968-04-24 Ici Ltd Tension control
US3787690A (en) * 1971-12-17 1974-01-22 Bell & Howell Co Tension transducer
GB1365153A (en) * 1972-08-10 1974-08-29 Beta Instr Co Apparatus for tension control of flexible materials during wind ing or unwinding processes
FR2275927A1 (fr) * 1974-06-19 1976-01-16 Marldon Eng Spec Embrayage magnetique principalement pour dispositif de guidage de fils

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE517154A (fr) *
US3276705A (en) * 1964-01-31 1966-10-04 Porter W Erickson Winding machine
GB1110718A (en) * 1965-10-22 1968-04-24 Ici Ltd Tension control
US3787690A (en) * 1971-12-17 1974-01-22 Bell & Howell Co Tension transducer
GB1365153A (en) * 1972-08-10 1974-08-29 Beta Instr Co Apparatus for tension control of flexible materials during wind ing or unwinding processes
FR2275927A1 (fr) * 1974-06-19 1976-01-16 Marldon Eng Spec Embrayage magnetique principalement pour dispositif de guidage de fils

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Instruments & Control Systems, Band 55, Nr. 4, April 1982, (Radnor, Penns., US), P. Plante: "Applying Electromagnetic Clutches and Brakes", seiten 31-34 siehe siete 32, rechte spalte, zeile 3 - seite 33, rechte spalte, zeile 2; abbildung 2 *

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0477422A1 (fr) * 1990-09-28 1992-04-01 Siemens Aktiengesellschaft Dévidoir - Régulation dynamométrique
DE19522295A1 (de) * 1995-06-20 1997-01-02 Pago Ag Buchs Sg Verfahren und Vorrichtung zur Regelung der Zugspannung eines Etikettenbandes in einer Etikettiervorrichtung
DE19522295C2 (de) * 1995-06-20 2001-05-10 Pago Ag, Buchs Sg Verfahren und Vorrichtung zur Regelung der Zugspannung eines Etikettenbandes in einer Etikettiervorrichtung
ITTO20130287A1 (it) * 2013-04-09 2014-10-10 Proteco S R L Macchina nastratrice con dispositivo di controllo della quantita' di materiale in nastro residua
ITTO20130286A1 (it) * 2013-04-09 2014-10-10 Proteco S R L Dispositivo di controllo della tensione di tesatura di un materiale in nastro avvolto su una bobina e macchina nastratrice incorporante detto dispositivo
ITTO20130285A1 (it) * 2013-04-09 2014-10-10 Proteco S R L Macchina nastratrice

Also Published As

Publication number Publication date
DE3713915A1 (de) 1987-11-12

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