EP1687469B1 - Dispositif d'etirage pour metier a filer - Google Patents

Dispositif d'etirage pour metier a filer Download PDF

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Publication number
EP1687469B1
EP1687469B1 EP04766749A EP04766749A EP1687469B1 EP 1687469 B1 EP1687469 B1 EP 1687469B1 EP 04766749 A EP04766749 A EP 04766749A EP 04766749 A EP04766749 A EP 04766749A EP 1687469 B1 EP1687469 B1 EP 1687469B1
Authority
EP
European Patent Office
Prior art keywords
drafting system
signals
electric motors
motor
foregoing
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.)
Not-in-force
Application number
EP04766749A
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German (de)
English (en)
Other versions
EP1687469A1 (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
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Application filed by Rieter Ingolstadt Spinnereimaschinenbau AG filed Critical Rieter Ingolstadt Spinnereimaschinenbau AG
Publication of EP1687469A1 publication Critical patent/EP1687469A1/fr
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Publication of EP1687469B1 publication Critical patent/EP1687469B1/fr
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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 Regulierrange, with at least two successive pairs of rollers, with a plurality of electric motors for driving each at least one roller of said roller pairs and with an electronic Regul mecanicsan to which the electric motors are connected, see 3B EP-0 587 829 A1.
  • the use of several direct drives, so-called single drives, for driving the drafting system components offers the possibility to automate the machine settings of distortions and tension conditions. Routes with such individual drives have been known for some time.
  • the motor shafts of the drives or the roller shafts incremental encoders for determining the speed, the rotational speed, the rotation angle o. The like.
  • the rotary encoders are usually designed as digital position (angle) sensors from whose position signals (number of rotations per predetermined time window) speed or speed information are obtained, which are used with the help of a respective associated motor control device for readjustment of the respective engine speed.
  • the advantages of the invention are in particular that a real-time signal is obtained with regard to the acceleration, which immediately produces load moment changes, i. Disturbances, registered. These disturbances include the scanning gear, which is upstream of the drafting, registered thick points and the elasticity of drive belt together with their vibrations.
  • the load torque changes cause positive or negative accelerations of the motor shaft, which are detected directly from the acceleration sensor.
  • the signals output by the sensor can then be processed directly to readjust the current of the motor. Since in contrast to the use of incremental position sensors no time-consuming processing of signals is necessary, a direct, fast and precise driving of the motors is possible. It can thus be achieved a constant and constant running of the roller pairs, which is superior to conventional drives.
  • acceleration sensors Another advantage of the use of acceleration sensors is their high sensitivity coupled with relatively high robustness.
  • said at least one acceleration sensor is designed as a relative acceleration sensor, since this does not take into account the disturbing influence of gravitational acceleration.
  • a relative acceleration sensor As a special, well-suited relative acceleration sensor, the so-called. Ferraris sensor has been found, which is based on the eddy current principle and has a very high dynamics.
  • the at least one acceleration sensor is arranged on a shaft of an electric motor and thus determines directly at the shaft the real-time signals for accelerating this shaft.
  • signals are only output from the latter 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, analogue and / or digital circuit parts are used for substantially delay-free signal evaluation of said sensors and their conversion into current signals for the motors.
  • the electric motors are each assigned its own motor control device.
  • This particularly comprises a speed controller and a downstream current controller for the respective motor.
  • incremental encoders encoder with barcode disks, resolvers based on the transformer principle, Sincos encoders
  • speed controller position and speed signals of the motor (or even of a motor driven roller shaft) won.
  • These actual signals are then applied to the speed controller, which compares them with the desired values of the regulating devices.
  • the output signal of the speed controller is switched as the setpoint value to the current controller, which also receives its current actual value from the motor.
  • an acceleration sensor is provided at a suitable point of the motor, preferably on its output side. The signals of the acceleration sensor can then be connected directly to the current controller to correct short or fast load changes.
  • the signal of the acceleration sensor is in its analogous form, i. without analog-to-digital conversion, used and the engine device and in this case preferably the current controller switched.
  • the signals of the acceleration sensor of the current regulator is advantageously 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).
  • the use of analog acceleration values or the voltage values proportional thereto from the at least one acceleration sensor has the advantage that these signals can be processed in real time.
  • the acceleration signals can also be connected to the regulating device, also here preferably but not necessarily in analog form.
  • a tachogenerator can be assigned to the exact rotational speed measurement of at least one of the electric motors, wherein the preferably analog, determined in real time signals of the tachogenerator are preferably switched to an input of the speed controller. Even with this tachogenerator short or fast speed changes can be detected on the motor shaft and incorporated into the speed control. Even at slow speeds, more precise speed values can be measured in an analogous form than with a digital and therefore graded-working one Encoder. For the evaluation of these analog signals, the speed controller is also preferably designed as a hybrid controller.
  • analog signals can also be processed by analog modules, in particular amplify, weight, evaluate, etc.
  • Figure 1 is a schematic plan view of an inventive drafting
  • Figure 2 is a block diagram of a motor control device.
  • FIG. 1 schematically shows a regulating drafting system 1 according to the invention, which comprises an input roller pair, a middle roller pair and an output roller pair. Only the lower rollers of these pairs are shown in Figure 1, i. 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 one or more schematically indicated fiber ribbons FB be clamped between the roller pairs.
  • the two lower rollers 2, 3 are driven by a common electric motor 10, which causes via a gear stage not shown with belt drives 6 a predetermined pre-distortion between the input and the center roller pair.
  • the output sub-roller 4 is driven by means of its own electric motor 20 via not shown belt drive 7.
  • the rotational speeds of the electric motors 10, 20 are so regulated by means of a regulating device 5 that a distortion of the sliver or the fiber sliver FB between the middle and the pair of output rollers is realized.
  • the regulating device 5 receives strip mass or strip cross-section signals from a drafting device 1 upstream, not shown here measuring device.
  • the regulating device 5 may be designed as a microcomputer, which also takes over the machine control in addition to the electronic control.
  • Each of the electric motors 10, 20 is assigned its own electronic engine governor 113 or 23, which are respectively connected to the regulating device 5 via lines 8 and 9 and receive desired values with respect to the engine speeds from these.
  • the motor control devices 13 and 23 are each connected via a line 18 and 28 to the respective electric motor 10, 20.
  • an incremental rotary encoder 11 and 21 is connected to the electric motors 10, 20 via lines 16 and 26 respectively, which is formed for example as a known encoder or resolver and is used to detect the rotational speeds of the respective motor shaft.
  • a shaft rotation for example, about 100 pulses are output by the incremental encoder 11 or 21, so that it is possible to deduce the rotational speed per unit time of the respective shaft from the pulses within a predetermined time window and the position of the motor rotor.
  • the digital signals of the rotary encoders 11 and 21 are transmitted by means of lines 17 and 27 respectively to the respective motor control device 13 and 23 and used there for adjusting the motor current of the electric motors 10, 20.
  • the electric motors 10 and 20 each associated with an acceleration sensor 12 and 22, which are presently designed as a relative acceleration sensors, for example as Ferraris sensors.
  • the acceleration sensors 12 and 22 are associated with the respective motor shafts of the electric motors 10, 20 via lines 14 and 24, wherein the acceleration sensors 12 and 22 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.
  • the acceleration sensors 12, 22 preferably only provide signals when positive or negative accelerations actually occur at the motor shafts. These are caused by load changes, which cause changes in the load torque and thereby the engine speed.
  • the analog acceleration signals of the acceleration sensors 12, 22 can now be used directly as real-time signals for controlling the current 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, therefore, the control quality can be significantly increased.
  • FIG. 2 shows a block diagram of a motor control device 13, wherein this device 13 is constructed analogously to the motor control device 23.
  • the motor control device 13 includes a speed controller 34 and a downstream current regulator 36, the latter being connected to the electric motor 10 via the line 18 and this transmits a desired current value.
  • the motor 10 is on the one hand the said acceleration sensor 12 and on the other hand via a line 31 (not shown in the embodiment of Figure 1) Tachogenerator 30 assigned. This determines the actual speed of the motor shaft and gives its analog output signal via a line 32 to the speed controller 34 on.
  • the speed controller 34 further receives digital signals from the incremental shaft encoder 11 and via the line 8 a speed setpoint "desired" from the regulating device 5.
  • the speed controller 34 Since the speed controller 34 thus processes analog and digital signals, it is designed as a hybrid controller. Its output signals are connected via a line 35 to the current controller 36, which also has a line 37, the current actual value of Motor 10 and via the line 15 a current acceleration value (if there is just an acceleration) proportional voltage value from the acceleration sensor 12 receives.
  • these voltage values are applied directly to the current regulator 36 in an analogous form, so that this is expediently also designed as a hybrid regulator.
  • the current controller 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 make the signal evaluation and the conversion into current signals substantially delay.
  • the motor control device 13 can be controlled by software.
  • the participating electric motors can work either in master / 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)

Claims (14)

  1. Dispositif d'étirage pour un métier à filer, particulièrement un étirage-régulateur, avec au moins deux paires de cylindres disposées l'une après l'autre, avec plusieurs moteurs électriques (10, 20) pour l'entraînement respectif d'au moins un cylindre (2, 3, 4) desdites paires de cylindres et avec un régulateur électronique (5) auquel sont connectés lesdits moteurs électriques (10, 20), caractérisé en ce qu'un capteur d'accélération (12, 22) est assigné à au moins un moteur électrique (10, 20) et/ou à au moins un cylindre (2, 3, 4).
  2. Dispositif d'étirage selon la revendication 1, caractérisé en ce que l'au moins un capteur d'accélération (12, 22) se présente sous la forme d'un capteur d'accélération relative.
  3. Dispositif d'étirage selon la revendication 2, caractérisé en ce que l'au moins un capteur d'accélération (12, 22) est un capteur d'accélération du type Ferrari.
  4. Dispositif d'étirage selon l'une quelconque des revendications précédentes, caractérisé en ce que l'au moins un capteur d'accélération (12, 22) est disposé à un arbre de l'au moins un moteur électrique (10, 20).
  5. Dispositif d'étirage selon l'une quelconque des revendications 1 à 3, caractérisé en ce que l'au moins un capteur d'accélération (12, 22) est disposé à un arbre d'un cylindre (2, 3, 4).
  6. Dispositif d'étirage selon l'une quelconque des revendications précédentes, caractérisé par des éléments de circuit à commutation rapide analogiques et/ou numériques (13, 23) destinés à l'analyse quasiment immédiate de l'au moins un capteur d'accélération (12, 22) et à la conversion dudit signal en signaux électriques pour le moteur afférent (10, 20).
  7. Dispositif d'étirage selon l'une quelconque des revendications précédentes, caractérisé en ce qu'un transmetteur d'angle de rotation incrémentiel (11, 21) est assigné à l'au moins un moteur électrique (10, 20) et/ou à l'au moins un cylindre (2, 3, 4) pour la mesure de la vitesse de rotation, du sens de rotation et/ou de l'angle de rotation.
  8. Dispositif d'étirage selon l'une quelconque des revendications précédentes, caractérisé en ce qu'un dispositif de régulation de moteur propre (12, 23) est assigné à l'au moins un moteur électrique (10, 20).
  9. Dispositif d'étirage selon la revendication 8, caractérisé en ce que le dispositif de régulation de moteur (13, 23) comporte un régulateur de vitesse de rotation (34) et un régulateur d'intensité de courant électrique (36) pour l'au moins un moteur électrique (10, 20).
  10. Dispositif d'étirage selon l'une quelconque des revendications précédentes, caractérisé en ce que les signaux du capteur d'accélération (12, 22) assigné à l'au moins un moteur électrique (10, 20) sont couplés au dispositif de régulation (5) ou au dispositif de régulation du moteur (13, 23), de préférence à l'entrée du régulateur d'intensité du courant électrique (36).
  11. Dispositif d'étirage selon la revendication 10, caractérisé en ce que les signaux du capteur d'accélération (12, 22) assigné au moteur électrique (10, 20) sont mis en ligne sous forme analogique, sans conversion analogique/numérique préalable.
  12. Dispositif d'étirage selon l'une quelconque des revendications précédentes, caractérisé en ce qu'il est prévu un générateur tachymétrique (30) pour déterminer la vitesse de rotation de l'au moins un moteur électrique (10, 20).
  13. Dispositif d'étirage selon la revendication 12, caractérisé en ce que les signaux du générateur tachymétrique (30) sont couplés au dispositif de régulation du moteur (13, 23), de préférence à une entrée du régulateur de vitesse de rotation (34).
  14. Dispositif d'étirage selon l'une quelconque des revendications 12 ou 13, caractérisé en ce que le générateur tachymétrique (30) transmet des signaux analogiques.
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 EP1687469A1 (fr) 2006-08-09
EP1687469B1 true 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

Also Published As

Publication number Publication date
WO2005045107A9 (fr) 2005-08-18
EP1687469A1 (fr) 2006-08-09
DE502004004053D1 (de) 2007-07-19
CN1878897A (zh) 2006-12-13
CN100547135C (zh) 2009-10-07
WO2005045107A1 (fr) 2005-05-19
DE10352303A1 (de) 2005-06-09

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