EP0393467A1 - Verschiebbare Vorrichtung zum Realisieren von mit Schlitzdreherlitze gewebten Kanten auf schützenlosen Webmaschinen - Google Patents

Verschiebbare Vorrichtung zum Realisieren von mit Schlitzdreherlitze gewebten Kanten auf schützenlosen Webmaschinen Download PDF

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Publication number
EP0393467A1
EP0393467A1 EP90106796A EP90106796A EP0393467A1 EP 0393467 A1 EP0393467 A1 EP 0393467A1 EP 90106796 A EP90106796 A EP 90106796A EP 90106796 A EP90106796 A EP 90106796A EP 0393467 A1 EP0393467 A1 EP 0393467A1
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EP
European Patent Office
Prior art keywords
carry out
weave
selvedge
shafts
links
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.)
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Application number
EP90106796A
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English (en)
French (fr)
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EP0393467B1 (de
Inventor
Ettore Viscardi
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
SOMET Societa Meccanica Tessile SpA
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    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03C—SHEDDING MECHANISMS; PATTERN CARDS OR CHAINS; PUNCHING OF CARDS; DESIGNING PATTERNS
    • D03C7/00—Leno or similar shedding mechanisms

Definitions

  • the present invention concerns a device to carry out the slotted leno heald weave on selvedges of fabrics as they are formed on shuttle­less looms.
  • the warp yarns positioned at the right and left ends of the fabric besides moving up and down to form the fabric, also interlace horizontally, twisting around the weft to obtain a weave thereof.
  • the half-link system - shown in fig. 1 of the accompanying drawings - is commonly used. With this system, two links A and B move in synchronism with the respective heald frames inside the lap.
  • a half-link C connected to an elastic element - for the purpose of interlacing two yarns D and E - and pulled down al­ternatively by either one of the links A and B, starting from the over­lapping position of said yarns D and E which have a common apex F.
  • This system which is extremely practical, allows to obtain a perfect weave, but it has the serious drawback of using up two heald frames to work in the lap, so that, if the loom works with other ground weaves, there are less heald frames available to work said ground weaves.
  • the device according to the present invention now advantageously replaces said known devices M and adopts for the first time the half-link system, so far exclusively applied on heald frames, allowing to obtain all the known advantages typical of this system - i.e. simplicity, func­tionality, easy threading, and strong weaves with the use of only two threads (thereby creating no thickenings in the fabric) - without however suffering from its drawbacks when applied, as in conventional technique, to heald frames.
  • the movable device according to the invention apt to carry out the slotted leno heald weave on selvedges of fabrics as they are formed - of the type independent from the heald frames, with a separate control therefrom which alternatively causes the lifting and lowering of selvedge shafts - is characterized in that, at least one group of two links with a half-link of reduced dimensions is associated to said selvedge shafts, and in that, said selvedge shafts control said links and half-link to carry out the slotted leno heald weave.
  • the device according to the invention (figs. 3 and 4) is applied similarly to the conventional devices M of fig. 2 (which refers to the weaving of a double roll of fabric with four selvedges) and is likewise controlled by a cord 1, the motion of which is caused by a cam 2 in oppo­sition to a return spring 3 (fig. 2) positioned at opposite ends of the loom.
  • Said cord 1 - by means of secondary cords 4 and 5 (fig. 3) connect­ ed thereto and rotating on pulleys 6 and 7 - pulls in alternatively oppo­site directions two racks 8 and 9 (fig. 4) cooperating by way of an in­terposed sprocket 10.
  • the racks 8 and 9 there are mounted small plates 11, 12, 13 and 14 - forming two pairs of selvedge shafts - which, following the movements of said racks, are al­ternatively lifted and lowered in accordance with the motion of the loom.
  • the selvedge shafts (or small plates) 11 to 14 there can be mounted links 15 for the weave - in a manner known per se - of the split selvedge and/or two links 16 combined in known manner (according to the diagram of fig. 1) with a half-link, to carry out a slotted leno heald weave.
  • the links 15 are provided merely in the external devices M of of fig.
  • the links 16, and the half-link associated thereto are suitably of reduced size - as compared to the conventional links used in heald frames to carry out slotted leno heald weaves - so as to be fit for the device of the present invention.
  • a spring 17 acts as return element for the half-link.
  • the device according to the invention is controlled - like the devices M of fig. 2 - by the cord 1 which, moving horizontalwise alternatively in the two directions, according to the motion law of the loom, under the control of the cam 2 in opposition to the return spring 3, operates said devices M.
  • the racks 8 and 9 of the device are alternatively moved up and down and cause the alternative lifting and lowering of the selvedge shafts 11 to 14 and, therewith, similar move­ments of the links 15 (where present), so as to form the split selvedge, and of the links 16, so as to carry out (in cooperation with the half-­link associated thereto) the slotted leno heald weave.
  • the devices according to the invention can be interposed - and easily adjusted along the width of the loom - in the gap between the loom reed and the first heald frame - which is also the first utilizable frame for the ground weave of the fabric - the invention provides all the advantages of the half-link system, without suffering from its main draw­ back of increasing the distance between the reed and the first utilizable frame.
  • the links 15 to form the split selvedge can be replaced by links 16 for the slotted leno heald weave, so as to carry out the slotted leno heald weave on the split selvedge.
  • This allows to use less arp yarns in the split selvedge and to reduce the length of the weft tails, allowing to save on split selvedge wastes.
  • this last configuration of the fabric can advantageously be obtained in that the device allows to have an out-of-phase advance or delay motion in respect of the motion of the ground frames.
  • This phase difference is normally carried out in the movement of the split selvedge, which has to retain the weft released by the drawing gripper independently from the closing of the shed. Said function would not be obtainable with a slotted leno heald weave device mounted on the heald frames, since these move exclusively in synchronism with the ground weave.
  • the device of the present invention will allow to carry out, far more than in the past, the slotted leno heald weave on split selvedges, often given up now-a-days for the remarkable complications (especially for what concerns adjusting the width of the fabric being formed) created by the conventional devices adopted for this purpose.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
  • Woven Fabrics (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Braiding, Manufacturing Of Bobbin-Net Or Lace, And Manufacturing Of Nets By Knotting (AREA)
EP90106796A 1989-04-21 1990-04-09 Verschiebbare Vorrichtung zum Realisieren von mit Schlitzdreherlitze gewebten Kanten auf schützenlosen Webmaschinen Expired - Lifetime EP0393467B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT8920235A IT1230002B (it) 1989-04-21 1989-04-21 Dispositivo mobile per eseguire la legatura a giro inglese dei bordi di tessuti in formazione su telai di tessitura senza navette.
IT2023589 1989-04-21

Publications (2)

Publication Number Publication Date
EP0393467A1 true EP0393467A1 (de) 1990-10-24
EP0393467B1 EP0393467B1 (de) 1996-11-27

Family

ID=11165009

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90106796A Expired - Lifetime EP0393467B1 (de) 1989-04-21 1990-04-09 Verschiebbare Vorrichtung zum Realisieren von mit Schlitzdreherlitze gewebten Kanten auf schützenlosen Webmaschinen

Country Status (5)

Country Link
EP (1) EP0393467B1 (de)
AT (1) ATE145677T1 (de)
DE (1) DE69029219T2 (de)
ES (1) ES2095219T3 (de)
IT (1) IT1230002B (de)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0519550A1 (de) * 1991-06-18 1992-12-23 Picanol N.V. Antriebsvorrichtung einer Leistenfachbildevorrichtung
BE1007287A3 (nl) * 1993-07-13 1995-05-09 Picanol Nv Randdradenmechanisme voor weefmachines.
US5419375A (en) * 1993-02-11 1995-05-30 Nuovopignone - Industrie Meccaniche E Fonderia S.P.A. Independently driven selvedge forming leno weaving device
EP0893522A1 (de) * 1997-07-17 1999-01-27 NUOVA VAMATEX S.p.A. Vorrichtung zum Antrieb des Schlitzdreherlitzenmechanismus in Webmaschinen
EP1016743A1 (de) * 1998-12-09 2000-07-05 Sulzer Textil Ag Einrichtung zum gesteuerten Bewegen eines Kettfadens
FR2794141A1 (fr) * 1999-05-27 2000-12-01 Staubli Gmbh Dispositif de formation de la foule pour la realisation d'une lisiere et metier a tisser equipe d'un tel dispositif
US6189576B1 (en) 1998-12-09 2001-02-20 Sulzer Rueti Ag Apparatus for the controlled moving of a warp thread
EP1179623A1 (de) 2000-08-09 2002-02-13 Promatech S.p.A. Vorrichtung zur Bildung einer Dreherbindung in Webmaschinen
EP1783254A1 (de) 2005-11-04 2007-05-09 Promatech S.p.A. Kettfädenwebvorrichtung zur Webkantenbildung in Webmaschinen
CN101906694A (zh) * 2010-08-26 2010-12-08 广东丰凯机械股份有限公司 织机绞边装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3255783A (en) * 1962-02-08 1966-06-14 Sulzer Ag Gauze weave mechanism for looms
FR2141601A1 (en) * 1971-06-18 1973-01-26 Lebocey Industrie Loom - has mechanism to produce false selvedge from - two interlacing yarns and tying yarn
FR2315556A1 (fr) * 1975-06-25 1977-01-21 Egelhaaf C C Dispositif permettant de former des torsades dans un tissu
DE2615989B1 (de) * 1976-04-12 1977-05-05 Rueti Ag Maschf Verfahren und vorrichtung an einer webmaschine zum bilden einer dreherleiste

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8703920U1 (de) * 1987-03-16 1988-07-21 Kloecker-Entwicklungs-Gmbh, 4280 Borken, De
DE8814891U1 (de) * 1988-11-30 1989-03-09 Kloecker-Entwicklungs-Gmbh, 4280 Borken, De

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3255783A (en) * 1962-02-08 1966-06-14 Sulzer Ag Gauze weave mechanism for looms
FR2141601A1 (en) * 1971-06-18 1973-01-26 Lebocey Industrie Loom - has mechanism to produce false selvedge from - two interlacing yarns and tying yarn
FR2315556A1 (fr) * 1975-06-25 1977-01-21 Egelhaaf C C Dispositif permettant de former des torsades dans un tissu
DE2615989B1 (de) * 1976-04-12 1977-05-05 Rueti Ag Maschf Verfahren und vorrichtung an einer webmaschine zum bilden einer dreherleiste

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0519550A1 (de) * 1991-06-18 1992-12-23 Picanol N.V. Antriebsvorrichtung einer Leistenfachbildevorrichtung
BE1004954A3 (nl) * 1991-06-18 1993-03-02 Picanol Nv Inrichting voor het aandrijven van een randdradenmechanisme bij weefmachines.
US5419375A (en) * 1993-02-11 1995-05-30 Nuovopignone - Industrie Meccaniche E Fonderia S.P.A. Independently driven selvedge forming leno weaving device
BE1008087A3 (fr) * 1993-02-11 1996-01-16 Nuovo Pignone Spa Ameliorations de metier a tisser.
BE1007287A3 (nl) * 1993-07-13 1995-05-09 Picanol Nv Randdradenmechanisme voor weefmachines.
EP0893522A1 (de) * 1997-07-17 1999-01-27 NUOVA VAMATEX S.p.A. Vorrichtung zum Antrieb des Schlitzdreherlitzenmechanismus in Webmaschinen
EP1016743A1 (de) * 1998-12-09 2000-07-05 Sulzer Textil Ag Einrichtung zum gesteuerten Bewegen eines Kettfadens
US6189576B1 (en) 1998-12-09 2001-02-20 Sulzer Rueti Ag Apparatus for the controlled moving of a warp thread
FR2794141A1 (fr) * 1999-05-27 2000-12-01 Staubli Gmbh Dispositif de formation de la foule pour la realisation d'une lisiere et metier a tisser equipe d'un tel dispositif
EP1069219A1 (de) * 1999-05-27 2001-01-17 Stäubli GmbH Kantenfachbildungsvorrichtung sowie Webmaschine mit einer solchen Vorrichtung
EP1179623A1 (de) 2000-08-09 2002-02-13 Promatech S.p.A. Vorrichtung zur Bildung einer Dreherbindung in Webmaschinen
EP1783254A1 (de) 2005-11-04 2007-05-09 Promatech S.p.A. Kettfädenwebvorrichtung zur Webkantenbildung in Webmaschinen
CN101906694A (zh) * 2010-08-26 2010-12-08 广东丰凯机械股份有限公司 织机绞边装置

Also Published As

Publication number Publication date
IT8920235A0 (it) 1989-04-21
ATE145677T1 (de) 1996-12-15
DE69029219D1 (de) 1997-01-09
ES2095219T3 (es) 1997-02-16
IT1230002B (it) 1991-09-20
EP0393467B1 (de) 1996-11-27
DE69029219T2 (de) 1997-04-03

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