EP0457322A1 - Dispositif de circuit pour régler le dispositif d'entraînement de l'ensouple de la chaîne d'un métier pour tricots en chaîne - Google Patents

Dispositif de circuit pour régler le dispositif d'entraînement de l'ensouple de la chaîne d'un métier pour tricots en chaîne Download PDF

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Publication number
EP0457322A1
EP0457322A1 EP91107950A EP91107950A EP0457322A1 EP 0457322 A1 EP0457322 A1 EP 0457322A1 EP 91107950 A EP91107950 A EP 91107950A EP 91107950 A EP91107950 A EP 91107950A EP 0457322 A1 EP0457322 A1 EP 0457322A1
Authority
EP
European Patent Office
Prior art keywords
warp beam
warp
control
amplifier
signal
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Withdrawn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
EP91107950A
Other languages
German (de)
English (en)
Inventor
Wolfgang Jahn
Alfred Schnabel
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.)
LIBA Maschinenfabrik GmbH
Original Assignee
LIBA Maschinenfabrik GmbH
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 LIBA Maschinenfabrik GmbH filed Critical LIBA Maschinenfabrik GmbH
Publication of EP0457322A1 publication Critical patent/EP0457322A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B27/00—Details of, or auxiliary devices incorporated in, warp knitting machines, restricted to machines of this kind
    • D04B27/10—Devices for supplying, feeding, or guiding threads to needles
    • D04B27/16—Warp beams; Bearings therefor
    • D04B27/20—Warp beam driving devices
    • D04B27/22—Warp beam driving devices electrically controlled

Definitions

  • the invention relates to a circuit arrangement according to the preamble of the claim.
  • Such a circuit arrangement is known from DE-OS 38 32 695.
  • the pressure roller drives a speed sensor for generating electrical signals which represent the actual thread take-off speed and thus represent a corresponding actual value.
  • a setpoint for the thread consumption is also calculated using a computer from these input values, such as thread consumption per stitch and stored sample program. The calculated setpoint is fed to the drive motor of the warp knitting machine, this drive being placed in a control loop by means of which the setpoint is compared with the actual speed of this drive.
  • the actual value taken from the warp beam is used to control a thread store in order to compensate for the thread consumption values which differ from stitch to stitch within a repeat.
  • the swiveling signal resulting from the swivel arm depending on its swivel position is used to determine the instantaneous value of the winding diameter of the warp beam and thus to influence the setpoint for the control of the warp beam drive accordingly.
  • the present invention relates to the linking of a setpoint value for the drive of the warp beam with the actual value derived from the pressure roller lying against it in the sense of regulating this drive.
  • the aim of this control system is to compensate for the changing tendency to oscillate due to the decreasing Kettbaum diameter.
  • a conventional control circuit for controlling the drive of a warp beam using the actual and target value is used, as is published, for example, in DE-OS 23 07 152.
  • the invention is based on the knowledge that the moment of inertia changes considerably with decreasing warp beam diameter, specifically with the 4th power of the radius of the warp beam.
  • This very large change in an essential parameter in the given control loop means that it tends to oscillate either in its lower or upper region (large or small Kettbaum diameter), or reacts too sluggishly when the tendency to oscillate is damped too much.
  • the figure shows the warp beam 1 of a knitting machine, from which the threads 2 are drawn off.
  • the warp beam 1 is driven via its axis 3 by the warp beam drive motor 4, specifically by means of the worm 5 and the worm wheel 6.
  • the pressure roller 7, which is carried by the swivel arm 8, lies on the surface of the warp beam 1.
  • the heavy arm 8 is pivotally mounted by means of the carrier 9 on the machine frame, not shown here, by means of the axis 10. By means of the spring 11, the swivel arm 8 is continuously pulled in the direction of the warp beam 1, so that the pressure roller 7 is always in driving contact with the warp beam 1.
  • the signal generator 13 is seated on the axis 12 of the pressure roller 7 and supplies signals via the line 14 to the comparator 15 in accordance with the current thread take-off speed. These signals can be a potential or a pulse train.
  • a pivoting signal transmitter 16 On the axis 10 of the pivot arm 8 is a pivoting signal transmitter 16, z. B. is attached a potentiometer, which, depending on the angular position of the swivel arm 8, emits a swiveling signal representing the respective diameter of the warp beam 1 via the line 17, the significance of which is discussed in more detail below.
  • the comparator contained in the circuit arrangement shown receives a setpoint value ascertained by computer 18 and is supplied to comparator 15 via line 19. This setpoint is calculated by the computer with the appropriate input, for example from the thread consumption per stitch row, the laying and the thread material used.
  • the comparator 15 generates in a known manner and, as is customary in such control circuits, a control signal at its output, which is fed to the amplifier 21 via the line 20.
  • the amplifier 21 is in terms of its Gain adjustable. This setting is made by the pivoting signal supplied via line 17.
  • the amplified control signal emitted by the amplifier 21 is fed in the usual way to the drive motor 4 for the warp beam 1 via a further comparator 22.
  • the comparator 22 built into a control loop and the signal generator 24, the speed of the Kettbaum drive motor 4 is regulated in the usual way to the control value output by the amplifier 21.
  • This control loop contained in the comparator 22 is therefore not the actual regulation of the thread take-off speed, since this is regulated by means of the pressure roller 7 and the comparator 15.
  • the pivot signal transmitter 16 emits a pivot signal which regulates the amplifier downward in terms of its degree of amplification, so that the control signal emitted by the comparator 15 via line 20 from the amplifier 21 is only reinforced relatively weakly.
  • the pivoting signal generator 16 emits a pivoting signal via the line 17, which increases the degree of amplification of the amplifier 21, so that increased control signals are now fed to the Kettbaum drive motor 4, leading to a lead accordingly stronger reaction of the Kettbaum drive motor 4.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Machines (AREA)
  • Looms (AREA)
EP91107950A 1990-05-16 1991-05-16 Dispositif de circuit pour régler le dispositif d'entraînement de l'ensouple de la chaîne d'un métier pour tricots en chaîne Withdrawn EP0457322A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4015763 1990-05-16
DE4015763A DE4015763C1 (fr) 1990-05-16 1990-05-16

Publications (1)

Publication Number Publication Date
EP0457322A1 true EP0457322A1 (fr) 1991-11-21

Family

ID=6406561

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91107950A Withdrawn EP0457322A1 (fr) 1990-05-16 1991-05-16 Dispositif de circuit pour régler le dispositif d'entraînement de l'ensouple de la chaîne d'un métier pour tricots en chaîne

Country Status (4)

Country Link
US (1) US5163307A (fr)
EP (1) EP0457322A1 (fr)
JP (1) JP2621683B2 (fr)
DE (1) DE4015763C1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2697034A1 (fr) * 1992-10-17 1994-04-22 Mayer Textilmaschf Procédé et dispositif pour la commande de l'avance de fil d'un métier à tricoter chaîne.

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE59206121D1 (de) * 1992-06-05 1996-05-30 Rueti Ag Maschf Webmaschine mit Teilkettbäumen
US5524461A (en) * 1995-04-24 1996-06-11 Techno-Craft, Inc. Control system for yarn feed gearbox
SE9900792D0 (sv) * 1999-03-03 1999-03-03 Iro Patent Ag Method for monitoring run/stop conditions of a yarn
KR100459795B1 (ko) * 2002-06-19 2004-12-03 박승헌 경편기의 경사 송출 제어 시스템
EP1686207B1 (fr) * 2005-01-31 2012-07-04 Luigi Omodeo Zorini Machine textile à dispositif de contrôle d'alimentation en fil
CN100396834C (zh) * 2006-04-13 2008-06-25 康盘方 经编机电子送经系统
CN101487165B (zh) * 2009-02-25 2011-01-05 常州市第八纺织机械有限公司 多轴向经编机送经量测速反馈装置
US10392734B2 (en) * 2016-07-03 2019-08-27 Tzu-Chin Hsu Yarn tension control device

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2307152A1 (de) * 1972-02-14 1973-08-23 Platt International Ltd Kettenwirkmaschine
DE2939312A1 (de) * 1979-09-28 1981-04-02 Liba Maschinenfabrik Gmbh, 8674 Naila Fadenzufuehrung fuer kettenwirkmaschinen
DE3832695A1 (de) * 1987-12-22 1989-07-06 Textima Veb K Vorrichtung zur fadenlaengengesteuerten kettfadenzufuehrung einer textilmaschine, insbesondere kettenwirkmaschine

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3727033A (en) * 1971-02-12 1973-04-10 Travis Mills Corp Yarn measuring apparatus for use with warp knitting machines
BE768521R (nl) * 1971-02-26 1971-11-03 Weefautomaten Picanol N V Meti Kettingafwinder voor
US3780541A (en) * 1972-09-05 1973-12-25 Veeder Industries Inc Material feed rate control system
IT999227B (it) * 1972-11-29 1976-02-20 Incotex Sa Meccanismo di regolazione per svol gitori automatici di ordito con au tomatismo di messa a zero
US3824694A (en) * 1973-01-17 1974-07-23 Allis Chalmers Length measuring system having automatic update of roll diameter compensation value
US3858415A (en) * 1973-12-10 1975-01-07 Liberty Fabrics Of New York Automatic yarn feed rate control system for warp beam knitting machines
SU926111A1 (ru) * 1980-05-08 1982-05-07 Киевский технологический институт легкой промышленности Устройство дл измерени подачи основы на основов зальных машинах
DE3111113C2 (de) * 1981-03-20 1986-01-23 Karl Mayer Textil-Maschinen-Fabrik Gmbh, 6053 Obertshausen Regelvorrichtung für den Motor einer das Gewirk beeinflussenden Wickelvorrichtung, wie Teilkettbaum, bei einer Kettenwirkmaschine
SU1068563A1 (ru) * 1982-02-02 1984-01-23 Ташкентское производственное трикотажное объединение "Малика" Устройство дл измерени подачи основы на основов зальной машине
JPS59129889U (ja) * 1983-02-16 1984-08-31 津田駒工業株式会社 電動送り出し制御装置
JPS6030770A (ja) * 1983-07-30 1985-02-16 石川島播磨重工業株式会社 パ−ライトダイヤフラムの取付方法
DE3676136D1 (de) * 1985-08-19 1991-01-24 Gretag Ag Verfahren und vorrichtung zum verteilen von einzelobjekten auf mehrere transportbahnen.
SU1308660A1 (ru) * 1986-01-02 1987-05-07 Киевский технологический институт легкой промышленности Устройство дл измерени подачи основы на основов зальных машинах
US4662407A (en) * 1986-02-12 1987-05-05 Albany International Corp. Method and apparatus of controlling warp tension on a weaving loom

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2307152A1 (de) * 1972-02-14 1973-08-23 Platt International Ltd Kettenwirkmaschine
DE2939312A1 (de) * 1979-09-28 1981-04-02 Liba Maschinenfabrik Gmbh, 8674 Naila Fadenzufuehrung fuer kettenwirkmaschinen
DE3832695A1 (de) * 1987-12-22 1989-07-06 Textima Veb K Vorrichtung zur fadenlaengengesteuerten kettfadenzufuehrung einer textilmaschine, insbesondere kettenwirkmaschine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2697034A1 (fr) * 1992-10-17 1994-04-22 Mayer Textilmaschf Procédé et dispositif pour la commande de l'avance de fil d'un métier à tricoter chaîne.

Also Published As

Publication number Publication date
JP2621683B2 (ja) 1997-06-18
DE4015763C1 (fr) 1991-10-24
JPH05230744A (ja) 1993-09-07
US5163307A (en) 1992-11-17

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