EP1409778B1 - Machine a tisser - Google Patents

Machine a tisser Download PDF

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Publication number
EP1409778B1
EP1409778B1 EP02743986A EP02743986A EP1409778B1 EP 1409778 B1 EP1409778 B1 EP 1409778B1 EP 02743986 A EP02743986 A EP 02743986A EP 02743986 A EP02743986 A EP 02743986A EP 1409778 B1 EP1409778 B1 EP 1409778B1
Authority
EP
European Patent Office
Prior art keywords
yarn
stop element
force
weaving
during
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.)
Expired - Lifetime
Application number
EP02743986A
Other languages
German (de)
English (en)
Other versions
EP1409778A1 (fr
Inventor
Gijsbertus De Zwart
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.)
Iro AB
Original Assignee
Iro AB
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 Iro AB filed Critical Iro AB
Publication of EP1409778A1 publication Critical patent/EP1409778A1/fr
Application granted granted Critical
Publication of EP1409778B1 publication Critical patent/EP1409778B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D47/00—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms
    • D03D47/34—Handling the weft between bulk storage and weft-inserting means
    • D03D47/36—Measuring and cutting the weft
    • D03D47/361—Drum-type weft feeding devices
    • D03D47/362—Drum-type weft feeding devices with yarn retaining devices, e.g. stopping pins
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D47/00—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms
    • D03D47/34—Handling the weft between bulk storage and weft-inserting means
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D47/00—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms
    • D03D47/34—Handling the weft between bulk storage and weft-inserting means
    • D03D47/36—Measuring and cutting the weft
    • D03D47/361—Drum-type weft feeding devices
    • D03D47/362—Drum-type weft feeding devices with yarn retaining devices, e.g. stopping pins
    • D03D47/363—Construction or control of the yarn retaining devices

Definitions

  • the present invention relates to a weaving device fitted with a yarn preparing device comprising a yarn feeding drum, on which yarn being supplied from a supply spool is stored temporarily before being passed on to a yarn processing device, in which the device comprises a stop element which is movable relative to the drum surface, which stop element can block the unwinding of the yarn at desired moments, and in which the device furthermore comprises means for measuring the force in the yarn at least during one or more sub-intervals of the weft insertion process, which means transfer the obtained values to an evaluation device, which at least transfers said values to a display device.
  • the weft yarn is passed through a braking device after leaving the feeding drum and subsequently through a tension measuring device, which continuously measures the yarn tension and which transfers the measured values to an evaluation device, which in turn transfers the signal to a display device, on which the development of the yarn tension during the weft insertion process is visualised, so that the user can take note thereof and possibly adjust parameters on the basis thereof.
  • the known device makes use of an additional element, viz. the tension measuring device, which involves additional cost, of course, as well as additional friction and yarn wear, and which thus has an adverse effect on the weaving process.
  • the object of the present invention is to provide a device of the same kind, in which it is not necessary to fit the device with an additional element in order to obtain information on the yarn tension.
  • the invention is based on the idea that in order to obtain a proper insight into the development of the yarn tension during the weft insertion process it actually suffices to know the yarn tension and visualise it for certain critical intervals of the weft insertion process.
  • Said critical points are generally the starting phase, the braking phase, the stop phase and the cutting phase.
  • the weaving device is characterized in that the stop element includes first force measuring means, which measure the force being exerted on the stop element by the yarn during those intervals of the weft insertion process that the yarn is in contact with the stop element, and which transfer the measured data to the evaluation device.
  • the stop element is fitted with pressure sensors, for example, which measure the forces that are being exerted and which transfer the measured values to the evaluation device.
  • another embodiment of the device according to the invention furthermore comprises a yarn braking device disposed between the yarn preparing device and the yarn processing device, which yarn braking device comprises second force measuring means for measuring the yarn tension during the interval of the weft insertion process that the yarn is in contact with the movable braking element, in which said means deliver the measured signals at least to the aforesaid evaluation device, which in turn passes on said signals to the display device.
  • said evaluation device is also in communication with the control processor of the weaving device, which enables the control processor to carry out certain control activities on the basis of signals received from the evaluation device.
  • numeral 1 indicates a yarn spool.
  • a yarn 5 extends from said spool to a yarn preparing device 2 comprising a drum 3 on which the yarn is stored in a number of windings, from which drum the yarn is fed to a yarn processing device in the form of a loom 4.
  • the yarn 5 furthermore passes through an insertion brake 6 disposed between the yarn feeding drum 3 and the loom 4.
  • a stop element 7 Disposed opposite the circumferential surface of the yarn feeding drum 3 is a stop element 7 which may be configured as shown in Figure 3.
  • the stop element is built up of a housing 8 containing an electric coil 9, which may be connected to a voltage source (not shown) and which co-acts with an anchor 10 which can move upwards and downwards under the influence of the forces exerted by the coil 9 and which, in the position in which it has been moved towards the drum, prevents the yarn 5 being unwound from the feeding drum 3.
  • the anchor 10 is provided with a stop pin 11, which, as already said before, can be moved towards the drum.
  • the stop pin 11 is guided in a bearing 12, which is fitted with a pressure sensor 13, by means of which the force being exerted on the stop pin 11 by the yarn 5 can be measured.
  • the signal from the pressure sensor 13 is transferred, via a line 14, to an evaluation device 15, which in turn transfers the signal to a display panel 17 via a line 16.
  • the brake 6, which functions to decelerate the yarn 5 during a certain period of the weft insertion process is provided with a movable braking element 18, which, as is shown in more detail in Figure 4b, may be a lever, for example, which is mounted on the shaft of an electric motor 19 which is capable of moving the arm 18 to different positions so as to obtain different braking effects, in which the force exerted by the motor is a measure of the yarn force.
  • a measure of the force which the lever 18 exerts on the yarn 5 can be obtained, and thus a measure of the tension in the yarn.
  • the value of said tension is likewise supplied, via the line 30, to the evaluation device 15, which in turn transfers said value, via the line 16, to the display panel 17 on which said tension can subsequently be visualised.
  • phase I the yarn 5 is still in contact with the stop element 7, and the tension being exerted on the stop element by the yarn 5 is displayed on the display panel as an ascending line 31 during this phase.
  • a period follows in which the yarn is passed through the loom 4 at a nearly constant velocity, after which a braking phase II begins at the moment when the yarn 5 has nearly reached the end of the shed, at which point the brake 6 comes into operation and a braking force is exerted on the yarn 5 by the braking element 18 and, as a react ion thereto, a yarn force is exerted on the braking element 18.
  • Said yarn force is measured by the brake 18, with the measured value being transferred to the evaluation device 14, which subsequently visualises it on the display panel 17 in the form of a peak 32 which represents the development in the tension during the braking phase II.
  • the stop phase III begins, in which the stop element 11 is pressed against the drum surface 3, so that further unwinding of the yarn is prevented and the yarn exerts a yarn force on the stop element 11, which yarn force is measured by the pressure sensor 13, with the measured value being transferred to the evaluation device 15, which displays said yarn force as a line 33 on the display panel 17.
  • the yarn is cut and a cutting phase IV occurs, in which the yarn 5 is still in contact with the stop element 11, which measures the tension in the yarn at that moment and transfers the measured value from to the evaluation device 15, which again displays said tension as a line 34 on the display panel 17 during said phase.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
  • Woven Fabrics (AREA)

Claims (3)

  1. Dispositif de tissage doté d'un dispositif (2) de préparation de fil qui comprend un tambour (3) d'alimentation en fil sur lequel le fil (5) délivré par une bobine dévideuse d'alimentation (1) est emmagasiné temporairement avant d'être passé dans le dispositif (4) de traitement de fil, le dispositif comprenant un élément d'arrêt (7) mobile par rapport à la surface du tambour, lequel élément d'arrêt (7) peut bloquer le déroulement du fil (5) à des moments souhaités, le dispositif comprenant de plus un moyen pour mesurer la force dans le fil au moins pendant un ou plusieurs sous-intervalles de l'opération d'insertion de fil, lequel moyen transfère les valeurs obtenues à un dispositif d'évaluation (15) qui au moins transfère lesdites valeurs à un dispositif d'affichage (17), caractérisé en ce que l'élément d'arrêt (7) comprend un premier moyen de mesure de la force qui mesure la force exercée sur l'élément d'arrêt par le fil pendant les parties de l'opération d'insertion de fil pendant lesquelles le fil est en contact avec l'élément d'arrêt et transfère les données mesurées à un dispositif d'évaluation (15) qui au moins transfère lesdits signaux au dispositif d'affichage (17).
  2. Dispositif de tissage selon la revendication 1, qui comprend de plus un frein (6) d'insertion de fil placé entre le dispositif (2) de préparation de fil et le dispositif (4) de traitement de fil à travers lequel le fil (5) est passé, caractérisé en ce que le dispositif (6) de freinage de fil comprend un deuxième moyen de mesure de force qui mesure la tension du fil pendant la partie de l'opération d'insertion de fil pendant laquelle le fil (5) est en contact avec le frein (6), lequel moyen délivre un signal correspondant au moins audit dispositif (15) d'évaluation qui transfère lesdits signaux au dispositif d'affichage (17).
  3. Dispositif de tissage selon les revendications 1 ou 2, caractérisé en ce que ledit dispositif (15) d'évaluation reçoit et transfère aussi des signaux à un processeur (42) de contrôle du dispositif de tissage.
EP02743986A 2001-07-20 2002-07-04 Machine a tisser Expired - Lifetime EP1409778B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
NL1018600 2001-07-20
NL1018600A NL1018600C2 (nl) 2001-07-20 2001-07-20 Weefmachine.
PCT/NL2002/000437 WO2003008684A1 (fr) 2001-07-20 2002-07-04 Machine a tisser

Publications (2)

Publication Number Publication Date
EP1409778A1 EP1409778A1 (fr) 2004-04-21
EP1409778B1 true EP1409778B1 (fr) 2007-06-27

Family

ID=19773760

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02743986A Expired - Lifetime EP1409778B1 (fr) 2001-07-20 2002-07-04 Machine a tisser

Country Status (7)

Country Link
EP (1) EP1409778B1 (fr)
JP (1) JP2004536238A (fr)
CN (1) CN1329576C (fr)
AT (1) ATE365824T1 (fr)
DE (1) DE60220919T2 (fr)
NL (1) NL1018600C2 (fr)
WO (1) WO2003008684A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9296629B2 (en) 2002-11-19 2016-03-29 Xogen Technologies Inc. Treatment of a waste stream through production and utilization of oxyhydrogen gas
US9187347B2 (en) 2002-11-19 2015-11-17 Xogen Technologies Inc. Treatment of a waste stream through production and utilization of oxyhydrogen gas
DE102005010534A1 (de) * 2005-03-04 2006-09-07 Ontec Elektro- Und Steuerungstechnik Gmbh Schussfadenzuführvorrichtung für Webmaschinen, insbesondere Greiferwebmaschinen

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01250441A (ja) * 1988-03-30 1989-10-05 Nissan Motor Co Ltd 無杼織機の緯入れ方法
SE9400248D0 (sv) * 1994-01-26 1994-01-26 Iro Ab Styrbar utgångsbroms för garnmatningsanordning till textilmaskiner, i synnerhet vävmaskiner av projektil eller gripar-typ
IT1282898B1 (it) * 1995-09-20 1998-04-01 Mario Gallo Dispositivo per controllare la tensione di un filo.
WO2000056964A2 (fr) * 1999-03-22 2000-09-28 Iropa Ag Procede pour l'optimisation et la surveillance de l'insertion de trame sur des metiers a tisser
IT1310749B1 (it) * 1999-11-30 2002-02-22 Lgl Electronics Spa Metodo e dispositivo di controllo di freni di trama elettrocomandatiper la regolazione automatica della tensione meccanica del filo di

Also Published As

Publication number Publication date
DE60220919D1 (de) 2007-08-09
NL1018600C2 (nl) 2003-01-21
WO2003008684A1 (fr) 2003-01-30
DE60220919T2 (de) 2007-10-18
ATE365824T1 (de) 2007-07-15
JP2004536238A (ja) 2004-12-02
CN1527893A (zh) 2004-09-08
EP1409778A1 (fr) 2004-04-21
CN1329576C (zh) 2007-08-01

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