EP0389387A1 - Schussfadenliefervorrichtung für eine Webmaschine mit Strahleintrag - Google Patents

Schussfadenliefervorrichtung für eine Webmaschine mit Strahleintrag Download PDF

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Publication number
EP0389387A1
EP0389387A1 EP90420123A EP90420123A EP0389387A1 EP 0389387 A1 EP0389387 A1 EP 0389387A1 EP 90420123 A EP90420123 A EP 90420123A EP 90420123 A EP90420123 A EP 90420123A EP 0389387 A1 EP0389387 A1 EP 0389387A1
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EP
European Patent Office
Prior art keywords
nozzle
fixed
weft
nozzles
telescopic
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Withdrawn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
EP90420123A
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English (en)
French (fr)
Inventor
Roger Fourneaux
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.)
Saurer Diederichs SA
Original Assignee
Saurer Diederichs SA
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 Saurer Diederichs SA filed Critical Saurer Diederichs SA
Publication of EP0389387A1 publication Critical patent/EP0389387A1/de
Withdrawn legal-status Critical Current

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    • 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
    • D03D47/28—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms wherein the weft itself is projected into the shed
    • D03D47/30—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms wherein the weft itself is projected into the shed by gas jet
    • D03D47/3006—Construction of the nozzles
    • D03D47/3013—Main nozzles
    • 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 present invention relates to a weft feed device for weaving machine without shuttle with pneumatic insertion of the weft. More particularly, this invention relates to a device constituting a double weft feed system, so that, when a fault in the weft thread is detected on one of the feed systems, then in progress in use, it automatically switches to the other supply system whose weft thread is kept on standby.
  • this feeding device is in particular intended for a weaving machine provided with means allowing a specific detection of faults in the weft feeding, for example means ensuring this detection in connection with a sequence of "unweaving" as described in a previous French patent application No. 89 01918 filed on February 7, 1989 in the name of the Applicant.
  • European patent application No. 0 195 469 indicates detectors placed in the path of the weft thread, in each of the two supply systems.
  • the detectors monitor the state of the weft thread and, if a fault is detected, they control the switching to the other supply system, on standby, via a control unit.
  • this document does not indicate any concrete solution for the passage from one weft thread to another, in the case of a weaving machine with pneumatic insertion of the weft.
  • European patent application No. 0 291 486 describes a double weft feed system, suitable for pneumatic insertion and comprising, on the same side of the weaving machine: a first pre-deliverer associated with a first nozzle, for the weft thread coming from a first supply coil, and - a second pre-deliverer associated with a second nozzle, for the weft thread coming from a second supply coil.
  • the weaving machine also includes a mobile launching nozzle with the comb, and the problem posed at the time of switching. from one feeding system to another is to manage to bring, into the mobile launching nozzle, the weft thread previously remained on standby. Indeed, there is already a general difficulty in introducing the free end of a wire at the inlet of a suction and blowing nozzle, this for pneumatic reasons, a harmful phenomenon of discharge which can occur at the nozzle entrance.
  • the axes of the first nozzle and of the second nozzle form an angle with the axis of the launch nozzle, and these first and second nozzles create diverging air jets. .
  • This arrangement remains mechanically complicated, in that it requires mobile mounting of the first and second nozzles, and control means moving each of these nozzles in a rotational or translational movement.
  • the present invention aims to eliminate these drawbacks, by providing a new and simplified configuration, allowing fixed mounting of the first and second nozzles, and reducing to the minimum the mobile elements always necessary for the safe supply of one or the other. weft threads at the entrance of the mobile launch nozzle.
  • the invention essentially relates to a weft feed device for weaving machine without shuttle with pneumatic insertion of the weft, the device constituting a double feed system such that, when a defect of the weft thread is detected on one of the feed systems, it automatically switches to the other feed system whose weft thread is kept on standby, and this device includes, on the same side weaving machine; a first pre-deliverer associated with a first nozzle, for the weft thread coming from a first supply reel and a second pre-deliverer associated with a second nozzle, for the weft thread coming from a second supply spool, each of these two nozzles being able to cooperate with a mobile launch nozzle with the comb of the weaving machine, for the insertion of the corresponding weft thread, the device being characterized in that: the above-mentioned first nozzle and second nozzle are nozzles mounted fixed on the side of the weaving machine, each of these two fixed nozzles has a telescopic tubular structure capable
  • the invention makes it possible to have, in the weft feed device, two essentially fixed nozzles, each having a telescopic structure comprising, in the simplest case, a fixed tubular element and a mobile tubular element. , guided on the fixed tubular element and movable along the axis of the nozzle considered.
  • the control means are constituted, in a particular embodiment, by a pneumatic bellows cylinder mounted between the rear body of each fixed nozzle and a region of the movable tubular element, an annular seal being interposed between this element tubular mobile and the fixed tubular element of this nozzle.
  • these control means are constituted, for each fixed nozzle, by a lateral jack, for example pneumatic, mounted parallel to the axis of this nozzle between its rear body and a point of the movable tubular element .
  • guide means are provided at the entrance to the mobile launching nozzle, these guide means being provided to cooperate with the front end of the telescopic tubular structure of one or other of the nozzles fixed, when this telescopic structure reaches the advanced position.
  • These guide means guarantee the positioning accuracy of the free end of the movable tubular element against the entry of the mobile launch nozzle, by compensating for the inaccuracies of the stop position of this launch nozzle.
  • the means for controlling the elongation of the telescopic structure of each fixed nozzle such that pneumatic cylinders, have their supply controlled by organs, such as solenoid valves, themselves placed under the dependence of switching means called upon in the event of detection of a fault in one of the weft feed systems .
  • FIG. 1 shows, very schematically, a shuttleless weaving machine with pneumatic insertion of the weft yarn 1 into the fabric in formation 2, from a fixed weft reserve situated on one side of the fabric 2.
  • the weft thread 1 assumed during weaving comes from a supply spool 3, placed on one side of the weaving machine, and it first arrives at a pre-deliverer 4 which measures corresponding lengths of thread has a pick and which releases the wire in successive lengths each corresponding to a pick.
  • the weft thread 1 then passes through a fixed nozzle 5, then through a launching nozzle 6 mobile with the comb (not shown), the fixed nozzles 5 and mobile 6 being supplied with compressed air to give the wire 1 the initial acceleration necessary for its insertion.
  • the weft thread 1 In crossing the "crowd" formed by the warp threads, the weft thread 1 is guided inside an insertion channel, and its movement is maintained by relay nozzles not shown, distributed over the width of fabric 2 and supplied sequentially with compressed air. Once inserted, each pick is separated from the rest of the weft thread 1 by cutting means 7 placed at the edge of the fabric 2 on the side of the mobile launch nozzle 6, after which the next pick can be inserted in the same way .
  • Optical control means 8 of the "weft breaker" type disposed towards the edge of the fabric 2 remote from the launching nozzle 6, ensure the detection of the actual arrival of the weft thread 1 up to this edge of the fabric 2
  • These control means 8 emit signals directed to processing means 9, which are themselves connected to a central unit 10 for controlling the weaving machine.
  • this weaving machine is equipped with additional supply means making it possible to maintain a second weft thread 11 on standby.
  • These means comprise a second supply reel 12, a second pre-feeder-measurer 13 and a second fixed nozzle 14, similar to those previously described and located on the same side of the weaving machine.
  • Switching means 15 are provided for controlling, if necessary, the passage from the first supply means 3,4,5 to the other supply means 12,13,14, or vice versa, in particular for continuing weaving with the weft thread. 11 remained on standby, when the weft thread 1 previously used is broken, these switching means being themselves under the control of the central unit 10.
  • the mobile launch nozzle 6 is common to the two supply systems, each of the fixed nozzles 5 and 14 being capable of directing the corresponding weft thread 1 or 11 towards this common mobile nozzle, in a manner which will be specified below. .
  • the weaving machine is further provided with means 16 provided for the extraction of waste from a broken or defective weft thread.
  • These are in particular pneumatic means displaceable over the entire width of the fabric 2, as described in a previous French patent application No. 55 07257 filed on May 25, 1988 in the name of Deman deresse.
  • These means 16 fulfill a so-called "untwisting" function, in association with a blowing sequence of the relay nozzles.
  • FIG. 2 shows the assembly formed by the mobile launch nozzle 6, and by the two fixed nozzles 5 and 14, the respective axes of which 7 and 18 converge towards the inlet of the launch nozzle 6, assumed to be stopped in a position well determined, and form, with the axis 19 of the latter, a certain acute angle A.
  • each fixed nozzle 5 or 14 has a telescopic structure, with a fixed tubular element 20 or 21 and a movable tubular element, respectively 22 or 23, movable in translation along the axis 17 or 18 of the corresponding nozzle.
  • the mobile tubular element 22 or 23 of this fixed nozzle is moved to its advanced position, to bring the weft thread 1 or 11 to the inlet of the launch nozzle 6.
  • a guide 24 can be mounted towards the inlet of the mobile launch nozzle 6, on this nozzle itself or on its support, to precisely bring the free end of the mobile tubular element 22 or 23 against the entry of said launch nozzle 6.
  • each fixed nozzle such as the nozzle 5
  • the movable tubular element is moved in translation along its axis by control means, of which Figures 3 and 4 indicate two embodiments.
  • the movable tubular member 22 is exterior to the fixed tubular member 20, and an annular seal 25 is interposed between these two elements, towards the front end of the fixed tubular element 20.
  • a pneumatic bellows cylinder 26 is mounted between the rear body 27 of the fixed nozzle 5 and an area of the movable tubular element 22.
  • the chamber annular 28 of the bellows cylinder 26 is supplied with compressed air by a flexible conduit 29. The arrival of compressed air causes the enlargement of the annular chamber 28 by elongation of the bellows, accompanied by the advance of the element mobile tubular 22.
  • the elasticity of the bellows of the jack 26 ensures the return of the mobile tubular element 22.
  • the mobile tubular element 22 of the nozzle 5 is also outside the fixed tubular element 20, on which it is mechanically guided.
  • the movement of the movable tubular element 22 is controlled by means of a lateral jack 30, mounted parallel to the axis 17 of the nozzle 5 between the rear body 27 of this nozzle and a point of the movable tubular element 22.
  • the jack 30 is in particular a double-acting pneumatic jack, with a first chamber 31, the supply of which 32 causes the jack 30 to lengthen and the movable tubular element 22 to advance, and with a second chamber 33 whose supply at 34 causes the retraction of the jack and the retraction of the movable tubular element 22.
  • the switching means 15 control the solenoid valves 35 and 36, arranged on the supply conduits (such as that 29 - see also FIG. 3) of the control means of the tubular elements mobile, respectively 22 and 23, belonging to the fixed nozzles 5 and 14.
  • the central unit 10 and the switching means 15 make it possible to involve the telescoping movement of the mobile nozzle 5 or 14 at the appropriate time, and more particularly as follows :
  • the switching means 15 control simultaneously the commissioning of the feed system of this second weft thread 11, and the advance of the movable tubular element 23 of the corresponding fixed nozzle 14.
  • the weft thread 11 is thus introduced securely into the mobile launch nozzle 6 which is then stopped in a determined position. Then, the movable tubular element 23 is brought back, and weaving can resume with the use of the second weft thread 11.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
EP90420123A 1989-03-22 1990-03-08 Schussfadenliefervorrichtung für eine Webmaschine mit Strahleintrag Withdrawn EP0389387A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8904032 1989-03-22
FR8904032A FR2644800B1 (fr) 1989-03-22 1989-03-22 Dispositif d'alimentation en fil de trame pour machine a tisser avec insertion pneumatique de la trame

Publications (1)

Publication Number Publication Date
EP0389387A1 true EP0389387A1 (de) 1990-09-26

Family

ID=9380125

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90420123A Withdrawn EP0389387A1 (de) 1989-03-22 1990-03-08 Schussfadenliefervorrichtung für eine Webmaschine mit Strahleintrag

Country Status (5)

Country Link
US (1) US5018557A (de)
EP (1) EP0389387A1 (de)
JP (1) JPH02277853A (de)
CS (1) CS135890A2 (de)
FR (1) FR2644800B1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1676943A3 (de) * 2004-11-26 2007-04-25 Tiziano Barea Verfahren und Vorrichtung zur Belieferung einer Textilmaschine mit einem Garn
CN101003923B (zh) * 2007-01-09 2011-07-20 青岛天一集团红旗纺织机械有限公司 全自动高速宽幅喷气织机

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6497257B1 (en) * 2002-02-28 2002-12-24 Glen Raven, Inc. Control of fill yarn during basket weave type patterns on air jet looms
JP2007308825A (ja) * 2006-05-17 2007-11-29 Toyota Central Res & Dev Lab Inc エアジェットルームにおける緯入れ装置
US11299827B2 (en) * 2018-05-17 2022-04-12 James Tolle Nanoconductor smart wearable technology and electronics

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0023928A1 (de) * 1979-08-08 1981-02-18 GebràœDer Sulzer Aktiengesellschaft Düsenanordnung für eine Webmaschine mit Strahleintrag
EP0023929A1 (de) * 1979-08-08 1981-02-18 GebràœDer Sulzer Aktiengesellschaft Düsenanordnung für eine Webmaschine mit Strahleintrag
EP0225669A1 (de) * 1985-12-13 1987-06-16 Picanol N.V. Vorrichtung zur Zuführung des Schussfadens an die Hauptdüse einer Webmaschine
EP0239137A1 (de) * 1986-02-21 1987-09-30 Picanol N.V. Vorrichtung zum Schusseintrag in das Webfach von Düsenwebmaschinen und regulierbare Düsen dazu
EP0291486A1 (de) * 1987-05-12 1988-11-17 Picanol N.V. Verfahren und Vorrichtung zum Einfädeln des Schusseintragorgans in Webmaschinen
EP0195469B1 (de) * 1985-03-19 1989-03-29 Picanol N.V. Webmaschine mit Schussfadenspeicher

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT257506B (de) * 1964-09-02 1967-10-10 Elitex Zavody Textilniho Mehrfarben-Schußwechseleinrichtung für Greiferwebstühle, Nadelwebstühle od. dgl.
EP0216220B1 (de) * 1985-09-04 1992-04-15 Tsudakoma Corporation Verfahren und Vorrichtung zur automatischen Wiedereinstellung der Schlussfadenspeicherrichtung
KR910008044B1 (ko) * 1987-03-16 1991-10-07 쯔다고마 고오교오 가부시끼가이샤 실안내 장치

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0023928A1 (de) * 1979-08-08 1981-02-18 GebràœDer Sulzer Aktiengesellschaft Düsenanordnung für eine Webmaschine mit Strahleintrag
EP0023929A1 (de) * 1979-08-08 1981-02-18 GebràœDer Sulzer Aktiengesellschaft Düsenanordnung für eine Webmaschine mit Strahleintrag
EP0195469B1 (de) * 1985-03-19 1989-03-29 Picanol N.V. Webmaschine mit Schussfadenspeicher
EP0225669A1 (de) * 1985-12-13 1987-06-16 Picanol N.V. Vorrichtung zur Zuführung des Schussfadens an die Hauptdüse einer Webmaschine
EP0239137A1 (de) * 1986-02-21 1987-09-30 Picanol N.V. Vorrichtung zum Schusseintrag in das Webfach von Düsenwebmaschinen und regulierbare Düsen dazu
EP0291486A1 (de) * 1987-05-12 1988-11-17 Picanol N.V. Verfahren und Vorrichtung zum Einfädeln des Schusseintragorgans in Webmaschinen

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1676943A3 (de) * 2004-11-26 2007-04-25 Tiziano Barea Verfahren und Vorrichtung zur Belieferung einer Textilmaschine mit einem Garn
CN101003923B (zh) * 2007-01-09 2011-07-20 青岛天一集团红旗纺织机械有限公司 全自动高速宽幅喷气织机

Also Published As

Publication number Publication date
FR2644800B1 (fr) 1991-05-31
US5018557A (en) 1991-05-28
CS135890A2 (en) 1991-08-13
JPH02277853A (ja) 1990-11-14
FR2644800A1 (fr) 1990-09-28

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