EP1859089A1 - Dispositif d'introduction de fils de trame pour des machines de tissage, en particulier des machines de tissage a navette centrale - Google Patents

Dispositif d'introduction de fils de trame pour des machines de tissage, en particulier des machines de tissage a navette centrale

Info

Publication number
EP1859089A1
EP1859089A1 EP06705969A EP06705969A EP1859089A1 EP 1859089 A1 EP1859089 A1 EP 1859089A1 EP 06705969 A EP06705969 A EP 06705969A EP 06705969 A EP06705969 A EP 06705969A EP 1859089 A1 EP1859089 A1 EP 1859089A1
Authority
EP
European Patent Office
Prior art keywords
weft
thread
feeder
weft thread
storage
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Withdrawn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
EP06705969A
Other languages
German (de)
English (en)
Inventor
Thomas Fiedlschuster
Jürgen LÄMMERHIRT
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.)
Ontec Elektro- und Steuerungstechnik GmbH
Original Assignee
Ontec Elektro- und Steuerungstechnik 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 Ontec Elektro- und Steuerungstechnik GmbH filed Critical Ontec Elektro- und Steuerungstechnik GmbH
Publication of EP1859089A1 publication Critical patent/EP1859089A1/fr
Withdrawn legal-status Critical Current

Links

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
    • 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

Definitions

  • the invention relates to a Schussfadenzu Georgiavorraum for weaving machines, especially for rapier looms with a supply reel for the weft, with a feeder for the compensation of the thread consumption during weft insertion, fed to the feeder feeder a Speicherl and the stored weft thread by means of the weft insertion elements from or from the memory is deducted.
  • the usual arrangement of such a weft feeder is z.
  • the weft yarn is stored by a winding process on a cylindrical memory on Fournisseur and thereby deducted overhead from the stationary and non-rotatable supply spool. He receives by a rotation that is not compensated again on the way to the weft insertion elements. Depending on the changing mean diameter of the supply spools, this rotation changes per unit length of the weft thread.
  • the quality of the fabric is greatly impaired by these unevenly distributed rotations of the weft.
  • DE 42 19 306 A1 proposes that a driven rear wheel rotating above the head of the storage drum should be used.
  • RECTlFlED SHEET (RULE 91) ISA / EP holding element to use.
  • the drive is an electric motor that defines the weft thread according to a given movement profile. Such a device increases the accuracy of the length of the individual weft threads. An influence on the rotations within the inserted weft thread does not have such a device.
  • WO 01/17886 a device has become known in which the weft thread is withdrawn tangentially from the supply reel.
  • the supply reel is tracked by a friction drive the winder drive of the feeder such that there is always a tension in the thread section between the supply reel and the winder.
  • a disadvantage of this device is that when starting and stopping operations of the weaving machine, which take place almost abruptly the supply reel can not be shut down or accelerated in the available periods ebenfals.
  • the threads of all the coils are pulled out of the rolling-off gate by a 3-roller delivery mechanism at an approximately constant speed.
  • the delivery system is continuously driven by means of a controllable motor.
  • the different thread consumption during the laying process is through pneumatically loadable yarn separator for each individual thread balanced.
  • These thread stores are directly upstream of the player.
  • these delivery devices are not suitable.
  • Different coil diameters of the coils lead to different stresses in the weft thread and to different fabric qualities. This deficiency can be prevented by the use of coils with a uniform thread length and with a simultaneous change of the coils.
  • the properties of the yarn which can not be controlled with the necessary accuracy, lead to different coil diameters and to different insertion lengths of the weft threads. The remnants on the coils cause a significant loss of textile material.
  • One of the device according to DE 100 03 184 A1 similar device uses the Fa. LIBA / NAILA for several years for a similar application.
  • all the coils of the gate, of which the thread is pulled in the tangential direction for the production of a multi-axial Fadengeleges is powered by timing belts by a single variable motor.
  • the coils should have uniform thread lengths and always uniform diameter.
  • Elastic loaded guide elements (dancer rollers) for the thread loops compensate for the different speeds of the thread consumption.
  • This device has the disadvantages with regard to the inertia of the dancer rollers in the same way as the devices of the above-mentioned WO 96/31 428 and DE 100 03 184 A1. It is therefore not suitable for the solution of weft insertion on looms.
  • the object of the present invention is to propose a weft feeder for looms with short start and brake cycles, the - even at a high weft insertion frequency individually organizetragender weft yarns and the use of very large supply spools - the supply of weft yarns with a defined voltage and without additional and uncontrollable Rotations possible.
  • Claims 2 to 3 and 5 show different principles for the design of the monitored additional weft thread buffer.
  • the embodiment according to claim 2 shows a, also manually well manageable and thus monitorable cache.
  • the embodiment according to claim 3 can be realized with suppliers already produced as standard, the encoders also provide signals for controlling the servomotors.
  • Claim 4 defines a weft feed in which the weft consumption during each weft insertion cycle is compensated by a feeder with storage drum and coaxial winder.
  • Claim 6, describes a weft feeder in which temporarily, during a weft insertion cycle, excess weft thread is temporarily stored in a storage shaft. This variant has the advantage that thus z. As well as slivers of mutually non-twisted, very thin carbon fibrils can be supplied without destroying their basic structure. Temporarily occurring 'wrong' rotations are avoided with high reliability.
  • Claim 5 formulated by a dependent variant of claim 4 is increased in the memory of the feeder for the weft insertion to the weft buffer for the start and braking of the loom and the encoder or additional donors are connected to the control or regulating device of the servomotor.
  • This variant has the advantage of the least expense for the structural design of the device.
  • FIG. 1 is a schematic overall view of the weft feeder with dancer roller and control separation between the feeder for the weft entry and the coil drive
  • 2 shows a variant according to FIG. 1 in which the feeder for the weft insertion is linked with the coil drive in terms of control technology.
  • Fig. 5 shows a variant in which the function of the feeder for the compensation of the different weft insertion speed is realized by a disk storage.
  • the supply reel 4 is mounted on a horizontal axis 40 transversely to the direction of the weft yarn 6.
  • the supply reel 4 is driven or controlled by servo motor 41 driven.
  • the control process is provided by the control and / or regulating device 5.
  • the weft thread 6 running tangentially from the supply reel 4 is guided over two deflection rollers 31 in the region of a weft thread interleaving device 3. Between the two deflection rollers 31, a dancer roller 32 deflects the weft thread 6 in the form of a loop extending downwards.
  • the dancer roll 32 is guided along a guide element 33 by means of slides 34.
  • the position of the dancer roll 32 is monitored by preferably two encoders 35, 36 in two limit positions. The achievement of one of these limit positions is controlled by the controller 5. It derives from the information of the encoder 35, 36 from a change in the speed of the supply reel (4). This rotational speed is adjusted so that the dancer roll 32 lingers over longer periods between the encoders 35, 36 without imparting impulses to the control 5.
  • the two encoders 35, 36 it is also possible to use so-called analog encoders (not shown, because they are known per se).
  • the feeder 2 is supplied to the just described manner, the weft 6 continuously with a predominantly constant speed.
  • the controller 5 provides for appropriate acceleration or braking operations on the supply reel. 4
  • the dancer roll 32 compensates for shortage or excess thread length of the weft thread temporarily, so that in the acceleration or deceleration phases of the weaving machine, the supply reels 4 can be accelerated or decelerated accordingly slow. It becomes possible to use very large coils 4.
  • the feeder 2 always receives sufficient weft yarn 6 with reasonably low tension and without undesired additional rotations, regardless of the fast start of the weft insertion elements.
  • the weft insertion usually has to be interrupted abruptly.
  • the additionally released by the slower deceleration of a heavy supply reel 4 weft thread is cached by the dancer roll 32 in a larger loop and released again at the next start of the loom.
  • the supply reel 4 can be accelerated more slowly. Additional differences are compensated by the control and / or regulation 5 together with the servomotor 41.
  • the feeder 2 has the usual structure for weft insertion devices.
  • a winder 22 winds the weft yarn tapering coaxially with the storage drum 21 onto the storage drum 21. The windings thus deposited on the circumference of the storage drum 21 are moved axially parallel to the head of the storage drum. Drum 21 out and there slightly braked pulled off by the annular trigger brake 23 overhead and the drain hole 24 fed.
  • the weft thread 6 leading rug 11 passes the weft thread 6 the gripper 12. This wears the presented by the guide lever 11 weft 6 finally with a defined voltage and without unwanted rotations in the shed 1 of the loom.
  • the weft buffer 3 operates independently of the controller 2.
  • the dancer roll 32 must temporarily compensate for the temporary difference between the average weft consumption and the respective peripheral speed of the supply reel 4.
  • the embodiment according to FIG. 2 additionally permits a coordination of the weft intermediate storage 3 with the storage of the feeder 2.
  • the transmitter 25 and / or the motor of the feeder 2 is connected to the control and / or regulating unit 5 1 for the servomotor 41 connected.
  • the device shown in FIG. 3 dispenses with a weft thread buffer 3 with dancer roller 32.
  • the buffer function for the start and braking operations of the weaving machine assumes the memory 26 at the feeder 2 for weft insertion.
  • the memory length must be increased by a corresponding amount, since the supply reel 4 clearly starts slower or is slowed down as the weft insertion device - here the gripper - starts or interrupts the weft insertion.
  • the encoder 25 and / or another encoder 25 gives the necessary information, which includes a further need or excess weft length, to the controller 5 ". This controls the servomotor 41 - which, as for all other variants - by a Stepper motor can be replaced.
  • FIG. 4 shows a further possibility for a weft intermediate storage for the slower starting or decelerating supply reel 4.
  • the Fournissseur 2 for the weft insertion is preceded by a second feeder 7 as a weft interleaving storage for the weaving and acceleration processes of the weaving machine.
  • This feeder 7 has a winder 72, a storage drum 71 and at least one encoder 75 for monitoring the storage charge.
  • the coordination of the two feeders 2 and 7 takes over the control and / or regulating unit 5 "', which controls the servomotor 41 on the basis of the information of the encoder 25 and the encoder 75 as well as the current drive parameters of the two motors of the feeders 2, 7.
  • FIG. 5 shows a weft feeder in which, instead of the Fournisseus 2 - for balancing the weft thread during a weaving cycle - with a cylindrical storage drum 21 and a winder 22, a feeder 8 with storage shaft 81, with delivery mechanism 82, is provided with fold 83 and conveyor belt 84.
  • the delivery unit 82 promotes the weft yarn with approximately constant speed, which is approximately proportional to the speed of the loom, via the oscillatingly driven fold 83 in the storage slot 81.
  • the conveyor belt 84 supports the movement of the folds in the lower space of the storage slot 81, from where the Weft is inserted by means of gripper 12 of the loom in the shed 1.
  • Sensors 85 and 86 monitor the minimum and maximum levels of the memory slot 81 and cause the controller 5 the drive motor 82 driving motor M1 to a faster or slower rotational movement.
  • This device according to FIG. 5 has the advantage that so-called intermittent "false" rotations in the weft thread are avoided. Also avoided are sharp distractions of the weft before weft insertion into the shed. This is particularly noticeable in the processing of carbon ribbons. Their loose structure of extremely many, extremely smooth and extremely thin filaments is not destroyed by the winding process. Rather, their structure within the storage slot 81, which is bounded laterally by plates, largely retained. The ribbon-shaped weft threads are undiluted and registered in their original structure in the shed and tied between the warp threads.

Landscapes

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

Abstract

L'invention concerne un dispositif d'introduction de fil de trame dans des machines de tissage, en particulier des machines de tissage à navette centrale comprenant une bobine de réserve (4) pour le fil de trame (6), une bobine débitrice de fil (2) destinée à équilibrer l'utilisation de fils lors de l'introduction de la trame, ledit fil de trame (6) étant introduit dans une réserve (21) puis retiré au moyen d'éléments d'insertion de trame (12) de la réserve (21). L'objectif de l'invention est d'éviter des rotations non contrôlées, supplémentaires dans le fil de trame et/ou d'utiliser des bobines de réserve (4) plus importantes pour les fils de trame. A cet effet, le dispositif est doté d'une bobine de réserve (4), dont l'axe (40) est perpendiculaire au sens de retrait du fil de trame (6) et qui est entraîné au moyen d'une servocommande (41). Dans la trajectoire du fil entre le point de sortie du fil de trame de la bobine de réserve (4) et le point de sortie du fil de trame hors de la réserve (21) de la bobine débitrice de fil (2) pour l'introduction de la trame, au moins une réserve intermédiaire du fil de trame (3; 7; 26) supplémentaire, surveillé en fonction du remplissage de la réserve par des transmetteurs (35, 36; 75; 25) est utilisée. Les transmetteurs (35,36; 75; 25) sont reliés à un appareil de commande (5, 51, 5", 5" ) ou de réglage destinés à la servocommande (41) par l'intermédiaire de lignes pilotes.
EP06705969A 2005-03-04 2006-02-14 Dispositif d'introduction de fils de trame pour des machines de tissage, en particulier des machines de tissage a navette centrale Withdrawn EP1859089A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200510010534 DE102005010534A1 (de) 2005-03-04 2005-03-04 Schussfadenzuführvorrichtung für Webmaschinen, insbesondere Greiferwebmaschinen
PCT/DE2006/000252 WO2006092115A1 (fr) 2005-03-04 2006-02-14 Dispositif d'introduction de fils de trame pour des machines de tissage, en particulier des machines de tissage a navette centrale

Publications (1)

Publication Number Publication Date
EP1859089A1 true EP1859089A1 (fr) 2007-11-28

Family

ID=36496413

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06705969A Withdrawn EP1859089A1 (fr) 2005-03-04 2006-02-14 Dispositif d'introduction de fils de trame pour des machines de tissage, en particulier des machines de tissage a navette centrale

Country Status (3)

Country Link
EP (1) EP1859089A1 (fr)
DE (1) DE102005010534A1 (fr)
WO (1) WO2006092115A1 (fr)

Families Citing this family (12)

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Publication number Priority date Publication date Assignee Title
CN101165250B (zh) * 2006-10-17 2011-02-02 经纬纺织机械股份有限公司 用于对储纬器进行数字化控制的装置及其控制方法
DE102007008150B3 (de) * 2007-02-19 2008-10-16 Ontec Elektro- Und Steuerungstechnik Gmbh Verfahren und Vorrichtung zur Fadenzwischenspeicherung
IT1395552B1 (it) * 2009-09-01 2012-09-28 Ergotron Dondi Benelli Dore Dispositivo per lo svolgimento controllato di un elemento a nastro o piattina avvolto su una rocca, in particolare una trama piatta per tessitura
CN102454031A (zh) * 2010-10-20 2012-05-16 吴江市广业纺织厂 织机送纱装置
CN102634913A (zh) * 2012-04-06 2012-08-15 经纬纺织机械股份有限公司 无捻度变化储纬装置
CN103156277B (zh) * 2013-02-21 2015-07-15 南通大学 防捻补丝系统
CN105177831A (zh) * 2015-09-28 2015-12-23 嵊州市中森电子有限公司 一种带有张力调节装置的储纬器
CN105332149B (zh) * 2015-10-21 2018-05-29 泉州市新空间装饰工程有限公司 一种张力可控的储纬器
CN105332152B (zh) * 2015-10-21 2017-11-14 嵊州市中森电子有限公司 一种应用于储纬器的引纬张力调节装置
ITUB20155496A1 (it) * 2015-11-11 2017-05-11 Pezzoli Miria Sistema controllato di alimentazione di filo di trama in un telaio
DE102015119499A1 (de) 2015-11-11 2017-05-11 ontec automation GmbH Fadenspeichervorrichtung und Fadenspeicherverfahren
CN108290699B (zh) * 2015-11-11 2019-10-11 P.T.M.T.有限责任公司 用于在织机中供应纬纱的受控系统

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Also Published As

Publication number Publication date
DE102005010534A1 (de) 2006-09-07
WO2006092115A1 (fr) 2006-09-08

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