EP1020551B1 - Métier à tisser avec ensouple à chaíne entraínée par deux actionneurs - Google Patents

Métier à tisser avec ensouple à chaíne entraínée par deux actionneurs Download PDF

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Publication number
EP1020551B1
EP1020551B1 EP99125830A EP99125830A EP1020551B1 EP 1020551 B1 EP1020551 B1 EP 1020551B1 EP 99125830 A EP99125830 A EP 99125830A EP 99125830 A EP99125830 A EP 99125830A EP 1020551 B1 EP1020551 B1 EP 1020551B1
Authority
EP
European Patent Office
Prior art keywords
loom
actuators
warp yarns
tension
controlled
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
EP99125830A
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German (de)
English (en)
Other versions
EP1020551A2 (fr
EP1020551A3 (fr
Inventor
Giuseppe Casarotto
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.)
Promatech SpA
Original Assignee
Promatech SpA
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 Promatech SpA filed Critical Promatech SpA
Publication of EP1020551A2 publication Critical patent/EP1020551A2/fr
Publication of EP1020551A3 publication Critical patent/EP1020551A3/fr
Application granted granted Critical
Publication of EP1020551B1 publication Critical patent/EP1020551B1/fr
Anticipated expiration legal-status Critical
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Classifications

    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D49/00—Details or constructional features not specially adapted for looms of a particular type
    • D03D49/04—Control of the tension in warp or cloth
    • D03D49/06—Warp let-off mechanisms
    • D03D49/10—Driving the warp beam to let the warp off

Definitions

  • the present invention relates to an important improvement in driving the warp beam of weaving looms and achieves important advantages in terms of the design and operation of these textile machines.
  • the present invention aims to eliminate these drawbacks and provides for this purpose a weaving loom of the type in which the warp yarns - which are wound onto the beam and directed towards the fabric forming zone of the loom - are unwound by means of slow rotation of the beam itself and are kept at a controlled tension along their section between the yarn carrier and the fabric pulling device, characterized in that said beam is driven at each of its two ends by a corresponding actuator, said actuators, located on the sides of the loom, performing a combined driving of the beam, so as to ensure controlled tension of the warp yarns.
  • said actuators for the combined driving of the beam are electric motors controlled by electronic means which detect and manage one or more characteristic parameters of the chain of warp yarns, including the tension of said yarns.
  • Fig. 1 is a general illustration the new method of performing rotation of the beam in a weaving loom having a single beam according to the invention
  • Fig. 2 is a diagram showing the arrangement of the network of sensors for signalling the tension of the warp chain
  • Fig. 3 is a diagram showing the arrangement of the system for controlling the warp chain, consisting of the actuators provided at the ends of the beam and the sensors for detecting the tension of the yarn.
  • the weaving loom provides, in a known manner, a single beam 1 from which the warp yarns F, directed towards the fabric forming zone and suitably supported by a yarn carrier 2, are unwound.
  • the loom In order to perform the slow rotation of the beam which determines unwinding of the yarns F, the loom is provided, according to the invention, with two actuators 3 and 4 which are located on the sides of the loom and which drive the corresponding ends 5 and 6 of the shaft of the beam 1.
  • said actuators 3 and 4 consist of electric motors which can be controlled electronically.
  • devices 7, 8 and 9 for measuring - directly or indirectly - the tension of the warp yarns or another typical parameter of the warp chain are provided (Fig. 2), said devices being able to detect said parameter respectively close to the yarn carrier, halfway along the warp chain and close to the fabric pulling device.
  • Fig. 3 The system for controlling unwinding of the warp beam is shown in Fig. 3: the signal detected by the sensors 7, 8 and 9 for the typical parameter of the warp chain, which is processed by a microprocessor or, more generally, by a processing network 10, is sent to the pair of actuators 3 and 4 so as to perform in a combined manner the unwinding of the beam controlled by them.
  • the actuators 3 and 4 which consist of a main actuator and a slave actuator, are controlled by electronic control units 11 and 12, communicating with each other and with the processing network 10, so as to ensure the synchronized adaptation of the speed of rotation of the ends of the beam controlled by the actuators with respect to a suitable distribution of the torque, in order to manage the energy consumption.
  • the following procedure is used: the electric current characterizing the type of electrical actuation at the ends of the beam, in both the actuators, is measured; the electric current value of the control unit of the master actuator is sent to the control unit of the slave actuator; the associated values are compared; depending on the difference determined in said comparison, an (angular) offset position is added to that of the slave actuator, so as to obtain in it the same current value as the master actuator.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
  • Tents Or Canopies (AREA)
  • Jib Cranes (AREA)

Claims (4)

  1. Métier à tisser du type dans lequel les fils de chaíne (F) - qui sont enroulés sur l'ensouple (1) et dirigés vers la zone de formation d'étoffe du métier - sont déroulés au moyen d'une rotation lente de l'ensouple (1) même et sont maintenus à une tension contrôlée le long de leur section entre le porte-fils et le dispositif de traction de l'étoffe, caractérisé en ce que ladite ensouple (1) est entraínée à chacune de ses deux extrémités (5, 6) par un actionneur correspondant (3, 4), lesdits actionneurs (3, 4), situés sur les côtés du métier, réalisant un entraínement combiné de l'ensouple (1) de manière à garantir une tension contrôlée des fils de chaíne (F).
  2. Métier selon la revendication 1, dans lequel, pour l'entraínement combiné de l'ensouple (1), lesdits actionneurs (3, 4) sont des moteurs électriques (3, 4) commandés par des moyens électroniques (7 à 12) qui détectent et gèrent un ou plusieurs paramètres caractéristiques de la tresse de fils de chaíne (F), y compris la tension desdits fils (F).
  3. Métier selon les revendications 1 et 2, dans lequel lesdits moyens électroniques comprennent des capteurs (7, 8, 9) disposés le long des fils de chaíne (F), un réseau (10) pour traiter les signaux associés et deux unités de commande (11, 12) pour commander lesdits moteurs (3, 4) communiquant l'une avec l'autre et avec ledit réseau de traitement (10).
  4. Métier selon les revendications 1 à 3, dans lequel l'un desdits actionneurs (3, 4) est un actionneur maítre et l'autre actionneur est un actionneur esclave.
EP99125830A 1998-12-23 1999-12-23 Métier à tisser avec ensouple à chaíne entraínée par deux actionneurs Expired - Lifetime EP1020551B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMI982810 1998-12-23
IT1998MI002810A IT1303654B1 (it) 1998-12-23 1998-12-23 Telaio di tessitura con subbio di ordito azionato da due attuatori

Publications (3)

Publication Number Publication Date
EP1020551A2 EP1020551A2 (fr) 2000-07-19
EP1020551A3 EP1020551A3 (fr) 2000-08-02
EP1020551B1 true EP1020551B1 (fr) 2002-11-06

Family

ID=11381334

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99125830A Expired - Lifetime EP1020551B1 (fr) 1998-12-23 1999-12-23 Métier à tisser avec ensouple à chaíne entraínée par deux actionneurs

Country Status (5)

Country Link
EP (1) EP1020551B1 (fr)
AT (1) ATE227365T1 (fr)
DE (1) DE69903787T2 (fr)
ES (1) ES2184385T3 (fr)
IT (1) IT1303654B1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITMI20120340A1 (it) 2012-03-06 2013-09-07 Btsr Int Spa Dispositivo e metodo di alimentazione di fili di ordito ad un telaio

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH623873A5 (fr) * 1977-12-02 1981-06-30 Sulzer Ag
EP0136389B1 (fr) * 1983-10-03 1986-11-12 Maschinenfabrik Sulzer-Rüti Ag Mécanisme de contrôle du déroulement de fils de chaîne pour métier à tisser
IT1207056B (it) * 1985-05-31 1989-05-17 Vamatex Spa Dispositivo svolgitore di subbi d'ordito gemelli in telai di tessitura.
JP2670826B2 (ja) * 1988-12-12 1997-10-29 津田駒工業株式会社 ツインビーム電動送り出し用の制御装置
IT1249664B (it) * 1991-06-19 1995-03-09 Ergotron Dondi Benelli Dore Sistema di controllo dello svolgimento dell'ordito in un telaio tessile provvisto di almeno due subbi d'ordito gemellati.
JP3159830B2 (ja) * 1993-05-11 2001-04-23 津田駒工業株式会社 ツインビーム織機における経糸送出制御装置

Also Published As

Publication number Publication date
EP1020551A2 (fr) 2000-07-19
ITMI982810A1 (it) 2000-06-23
ES2184385T3 (es) 2003-04-01
ATE227365T1 (de) 2002-11-15
IT1303654B1 (it) 2001-02-21
EP1020551A3 (fr) 2000-08-02
DE69903787T2 (de) 2003-07-17
DE69903787D1 (de) 2002-12-12

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