EP1687469A1 - Dispositif d'etirage pour metier a filer - Google Patents

Dispositif d'etirage pour metier a filer

Info

Publication number
EP1687469A1
EP1687469A1 EP04766749A EP04766749A EP1687469A1 EP 1687469 A1 EP1687469 A1 EP 1687469A1 EP 04766749 A EP04766749 A EP 04766749A EP 04766749 A EP04766749 A EP 04766749A EP 1687469 A1 EP1687469 A1 EP 1687469A1
Authority
EP
European Patent Office
Prior art keywords
drafting system
acceleration sensor
signals
motor
electric motor
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
EP04766749A
Other languages
German (de)
English (en)
Other versions
EP1687469B1 (fr
Inventor
Peter Denz
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.)
Rieter Ingolstadt Spinnereimaschinenbau AG
Original Assignee
Rieter Ingolstadt Spinnereimaschinenbau 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 Rieter Ingolstadt Spinnereimaschinenbau AG filed Critical Rieter Ingolstadt Spinnereimaschinenbau AG
Publication of EP1687469A1 publication Critical patent/EP1687469A1/fr
Application granted granted Critical
Publication of EP1687469B1 publication Critical patent/EP1687469B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H5/00—Drafting machines or arrangements ; Threading of roving into drafting machine
    • D01H5/18—Drafting machines or arrangements without fallers or like pinned bars
    • D01H5/32—Regulating or varying draft
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H13/00—Other common constructional features, details or accessories
    • D01H13/32—Counting, measuring, recording or registering devices

Definitions

  • the invention relates to a drafting system for a spinning machine, in particular a regulating section, with at least two successive pairs of rollers, with a plurality of electric motors for driving at least one roller each of said pairs of rollers and with an electronic control unit which the electric motors are connected to.
  • an acceleration sensor is assigned to at least one electric motor and / or at least one roller.
  • acceleration sensors Another advantage of using acceleration sensors is their high sensitivity and, at the same time, relatively great robustness.
  • the said at least one acceleration sensor is particularly preferably designed as a relative acceleration sensor, since this does not take into account the disruptive influence of the acceleration due to gravity.
  • the so-called Ferraris sensor which is based on the eddy current principle and has a very high dynamic range, has proven to be a special, well-suited relative acceleration sensor.
  • the at least one acceleration sensor is arranged on a shaft of an electric motor and thus determines the real-time signals for accelerating this shaft directly on the shaft.
  • signals are only output from it when the roller experiences a relative acceleration.
  • the acceleration sensor is arranged on a shaft of a roller.
  • the time advantage gained by means of the acceleration sensor can be retained if fast-switching, analog and / or digital circuit parts are used for essentially instantaneous signal evaluation of the sensors mentioned and their conversion into current signals for the motors.
  • a separate motor control device is advantageously assigned to the electric motors.
  • This particularly preferably comprises a speed controller and a downstream current controller for the respective motor.
  • position and speed signals of the motor are obtained, for example, from incremental rotary encoders (encoders with bar code disks, resolvers based on the transformer principle, Sincos encoders).
  • These actual signals are then applied to the speed controller, which compares them with the target values of the regulating devices.
  • the output signal of the speed controller is applied to the current controller as a setpoint, which also receives its current actual value from the motor.
  • an acceleration sensor is provided at a suitable point on the engine, preferably on its output side. The signals from the acceleration sensor can then be connected directly to the current controller in order to compensate for short or fast load changes.
  • the signal of the acceleration sensor is particularly preferred in its analog form, i.e. without analog-digital conversion, used and preferably connected to the motor device and in this case the current controller.
  • the current controller is expediently designed as a hybrid controller which can process both analog and digital signals (the latter are in particular the output signals of the speed controller).
  • analog acceleration values or the voltage values proportional to them from the at least one acceleration sensor has the advantage that these signals can be processed in real time.
  • acceleration signals can also be connected to the regulating device, also in this case preferably but not necessarily in analog form.
  • a tachometer generator for exact speed measurement can be assigned to at least one of the electric motors, the preferably analog, real-time signals of the tachometer generator preferably being connected to an input of the speed controller.
  • the speed controller is also preferably designed as a hybrid controller.
  • Figure 1 is a schematic plan view of a drafting system according to the invention.
  • FIG. 1 schematically shows a regulating drafting device 1 according to the invention, which comprises an input roller pair, a middle roller pair and an output roller pair. Only the lower rolls of these pairs are shown in FIG. the input lower roller 2, the middle lower roller 3 and the output lower roller 4. Only these lower rollers 2, 3, 4 are driven in the present case, while the upper rollers, not shown, are pressed onto the associated lower rollers 2, 3, 4, so that the fiber ribbon or fibers FB, which is only indicated schematically be clamped between the pairs of rollers.
  • the two lower rollers 2, 3 are driven by a common electric motor 10, which causes a predetermined advance between the pair of input rollers and the center rollers via a gear stage (not shown) with belt drives 6.
  • the output lower roller 4 is driven by means of its own electric motor 20 via belt drives 7, not shown.
  • the speeds of the electric motors 10, 20 can be regulated with the aid of a regulating device 5 in such a way that a warping of the sliver or slivers FB regulating the sliver mass fluctuations is realized between the middle and the exit roller pair.
  • the regulating device receives 5 tape measures or Band cross-sectional signals from a measuring device upstream of the drafting device 1, not shown here.
  • the regulating device 5 can be designed as a microcomputer which, in addition to the electronic regulation, also takes over the machine control.
  • each of the electric motors 10 and 20 is assigned an acceleration sensor 12 or 22, which in the present case is designed as a relative acceleration sensor, for example as a Ferraris sensor.
  • the acceleration sensors 12 and 22 are assigned to the respective motor shafts of the electric motors 10, 20 via lines 14 and 24, the acceleration sensors 12 and 22 being highly dynamic acceleration signals in the form of actual voltage values via lines 15 and 25 to the respective motor control device 13 and 23 transmit.
  • the acceleration sensors 12, 22 preferably only deliver signals when positive or negative accelerations actually occur on the motor shafts. These are caused by changes in the load, which cause changes in the load torque and thus the engine speed.
  • the analog acceleration signals of the acceleration sensors 12, 22 can now be used directly as real-time signals for current control of the electric motors 10, 20.
  • the combined evaluation of the position values measured with the aid of the incremental rotary encoders 11 and 21 and the acceleration values of the sensors 12 and 22 ensure precise, fast motor control, in particular in the case of rapid and / or short load changes. Overall, the control quality can thus be increased considerably.
  • FIG. 2 shows a block diagram of a motor control device 13, this device 13 being constructed analogously to the motor control device 23.
  • the motor control device 13 comprises a speed controller 34 and a downstream current controller 36, the latter being connected to the electric motor 10 via the line 18 and transmitting a current target value to the latter.
  • the aforementioned acceleration sensor 12 is assigned to the motor 10 and, on the other hand, a tachometer generator 30 (not present in the exemplary embodiment in FIG. 1) is assigned via a line 31. This determines the actual speed of the motor shaft and forwards its analog output signal to the speed controller 34 via a line 32.
  • the speed controller 34 also receives digital signals from the incremental rotary encoder 11 and, via line 8, a speed setpoint “target” from the regulating device 5. Since the speed controller 34 thus processes analog and digital signals, it is designed as a hybrid controller. Its output signals are via a line 35 the current controller 36 is connected, which also the current actual value of the Motor 10 and via line 15 receives a voltage value proportional to the instantaneous acceleration value (if acceleration is present) from the acceleration sensor 12.
  • these voltage values are directly applied in an analog form to the current regulator 36, so that it is also expediently designed as a hybrid regulator.
  • the current regulator 36 receives the information “Max” for the maximum permissible motor current via a line 38.
  • the motor control device 13 together with the speed controller 34 and the current controller 36 preferably has fast-switching, analog and digital circuit parts in order to be able to carry out the signal evaluation and the conversion into current signals essentially without delay.
  • the motor control device 13 is preferably controllable by software.
  • the electric motors involved can either operate in mast / slave mode or in parallel setpoint mode.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Control Of Multiple Motors (AREA)
  • Spinning Or Twisting Of Yarns (AREA)

Abstract

L'invention concerne un dispositif d'étirage conçu pour un métier à filer, en particulier un régulateur d'étirage, comprenant au moins deux paires de cylindres successives, plusieurs moteurs électriques (10, 20) qui servent à entraîner respectivement au moins un cylindre (2, 3, 4) desdites paires de cylindres, ainsi qu'une unité de régulation électronique (5) à laquelle les moteurs électriques (10, 20) sont raccordés. Le dispositif d'étirage selon l'invention est caractérisé en ce qu'un capteur d'accélération (12, 22) est associé à au moins un moteur électrique (10, 20) et/ou à au moins un cylindre (2, 3, 4).
EP04766749A 2003-11-06 2004-09-09 Dispositif d'etirage pour metier a filer Not-in-force EP1687469B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2003152303 DE10352303A1 (de) 2003-11-06 2003-11-06 Streckwerk für eine Spinnereimaschine
PCT/EP2004/052099 WO2005045107A1 (fr) 2003-11-06 2004-09-09 Dispositif d'etirage pour metier a filer

Publications (2)

Publication Number Publication Date
EP1687469A1 true EP1687469A1 (fr) 2006-08-09
EP1687469B1 EP1687469B1 (fr) 2007-06-06

Family

ID=34559516

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04766749A Not-in-force EP1687469B1 (fr) 2003-11-06 2004-09-09 Dispositif d'etirage pour metier a filer

Country Status (4)

Country Link
EP (1) EP1687469B1 (fr)
CN (1) CN100547135C (fr)
DE (2) DE10352303A1 (fr)
WO (1) WO2005045107A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008001696B4 (de) * 2008-05-09 2019-06-13 Rieter Ingolstadt Gmbh Spinnereivorbereitungsmaschine mit Auslaufregulierung
CN108842234A (zh) * 2018-09-05 2018-11-20 张家港市利佳纺织有限公司 一种变频调速氨纶纱加捻装置
CN110923868B (zh) * 2019-12-31 2023-03-03 经纬智能纺织机械有限公司 一种环锭细纱机后罗拉同步及窜动检测装置
CN113201818B (zh) * 2021-05-06 2022-11-15 湖北天门纺织机械股份有限公司 一种细纱机后区牵伸倍数的调整系统及方法

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2941612A1 (de) * 1979-10-13 1981-04-23 Zinser Textilmaschinen Gmbh, 7333 Ebersbach Strecke
DE3900409A1 (de) * 1989-01-09 1990-07-12 Rieter Ag Maschf Textilmaschine, insbesondere spinnmaschine
JPH05502701A (ja) * 1990-09-20 1993-05-13 マシーネンフアブリーク　リーテル　アクチエンゲゼルシヤフト 制御式フィードローラを備えたドラフト装置用駆動装置
CH685164A5 (de) * 1992-03-05 1995-04-13 Zellweger Uster Ag Verfahren und Vorrichtung zur Regelung des Verzugs eines Streckwerks.
DE19644560B4 (de) * 1996-10-26 2007-10-11 TRüTZSCHLER GMBH & CO. KG Streckwerk für eine Spinnereimaschine, insbesondere eine Regulierstrecke für Baumwolle
DE10004604B4 (de) * 2000-02-03 2018-04-05 Trützschler GmbH & Co Kommanditgesellschaft Vorrichtung zum Zuführen von Faserbändern an einer Spinnereimaschine, insbesondere Strecke, z.B. Regulierstrecke
DE10064835C2 (de) * 2000-12-22 2002-11-14 Siemens Ag Schaltungsanordnung zur Auswertung eines Beschleunigungssensors nach dem Ferrarisprinzip
DE10123188A1 (de) * 2001-05-12 2002-11-14 Heidenhain Gmbh Dr Johannes Winkelmeßsystem mit integriertem Ferraris-Sensor

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2005045107A1 *

Also Published As

Publication number Publication date
WO2005045107A9 (fr) 2005-08-18
DE502004004053D1 (de) 2007-07-19
EP1687469B1 (fr) 2007-06-06
DE10352303A1 (de) 2005-06-09
CN100547135C (zh) 2009-10-07
WO2005045107A1 (fr) 2005-05-19
CN1878897A (zh) 2006-12-13

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