EP0393467B1 - Dispositif mobile pour réaliser le tissage des lisières à pas de gaze à lisse à coulisse sur des métiers sans navette - Google Patents

Dispositif mobile pour réaliser le tissage des lisières à pas de gaze à lisse à coulisse sur des métiers sans navette Download PDF

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Publication number
EP0393467B1
EP0393467B1 EP90106796A EP90106796A EP0393467B1 EP 0393467 B1 EP0393467 B1 EP 0393467B1 EP 90106796 A EP90106796 A EP 90106796A EP 90106796 A EP90106796 A EP 90106796A EP 0393467 B1 EP0393467 B1 EP 0393467B1
Authority
EP
European Patent Office
Prior art keywords
weave
carry out
selvedge
links
heald
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
EP90106796A
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German (de)
English (en)
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EP0393467A1 (fr
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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Filing date
Publication date
Application filed by SOMET Societa Meccanica Tessile SpA filed Critical SOMET Societa Meccanica Tessile SpA
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Classifications

    • 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.
  • 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.
  • EP-A-282874 is an example of this known technique in which the two links and the associated half link apt to carry out the slotted leno heald wave are stiffly fixed to a heald frame.
  • magnetic means to alternatively connect the half-link to the two links are disclosed.
  • DE-U1-8814891.2 is a similar example of the same technique, in which there are disclosed different means to connect the half-link to the two links and besides there are foreseen means to change the height of the heald frame.
  • 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 device according to the invention apt to carry out the slotted leno heald weave on selvedges of fabrics as they are formed on shuttleless looms - of the type controlled independently from the heald frame of the loom and easily adjustable along the width of the loom - is characterized in that it comprises two pairs of selvedge shafts, formed by couples of small plates mounted on two racks, respectively, and projecting therefrom, alternatively lifted and lowered by respective control means, housing at least one group of two links and a half-link therewith associated 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 opposition to a return spring 3 (Fig. 2) positoned at opposite ends of the loom.
  • Said cord 1 - by means of secondary cords 4 and 5 (Fig. 3) connected 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 drawback 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.

Landscapes

  • 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)

Claims (3)

  1. Dispositif pour réaliser l'armure de lisse de gaze fendue sur les lisières d'étoffes tissées sur des métiers sans navette - du type commandé indépendamment des cadres à lisses du métier et réglable facilement sur ia largeur du métier - caractérisé en ce qu'il comprend deux paires d'arbres de lisière, formées par des couples de petites plaques (11, 12; 13, 14) montés sur deux crémaillères (8, 9), respectivement, et en projection depuis celles-ci, alternativement montées et descendues par des moyens de commande respectifs (1, 4, 6; 1, 5, 7), logeant au moins un groupe de deux articulations (16) et une demi-articulation associée pour réaliser l'armure de lisse de gaze fendue.
  2. Dispositif selon la revendication 1, dans lequel lesdites crémaillères (8, 9) sont déplacées dans des directions opposées alternativement au moyen de deux câbles (4, 5), reliés aux crémaillères à une extrémité et à un câble de commande commun (1) à l'autre extrémité.
  3. Dispositif selon l'une quelconque des revendications précédentes, dans lequel lesdits arbres de lisière ont une largeur suffisant juste à loger en outre un petit nombre d'articulations (15) pour le tissage de la lisière fendue.
EP90106796A 1989-04-21 1990-04-09 Dispositif mobile pour réaliser le tissage des lisières à pas de gaze à lisse à coulisse sur des métiers sans navette Expired - Lifetime EP0393467B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT2023589 1989-04-21
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.

Publications (2)

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

Family

ID=11165009

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90106796A Expired - Lifetime EP0393467B1 (fr) 1989-04-21 1990-04-09 Dispositif mobile pour réaliser le tissage des lisières à pas de gaze à lisse à coulisse sur des métiers sans navette

Country Status (5)

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

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE1004954A3 (nl) * 1991-06-18 1993-03-02 Picanol Nv Inrichting voor het aandrijven van een randdradenmechanisme bij weefmachines.
IT1271950B (it) * 1993-02-11 1997-06-10 Nuovopignone Ind Meccaniche Ef Perfezionamenti in un telaio tessile
BE1007287A3 (nl) * 1993-07-13 1995-05-09 Picanol Nv Randdradenmechanisme voor weefmachines.
IT1293618B1 (it) * 1997-07-17 1999-03-08 Vamatex Nuova Spa Dispositivo di comando per la legatura a giro inglese in telai di tessitura
EP1016743B1 (fr) * 1998-12-09 2003-04-16 Sultex AG Dispositif pour le déplacement commandé d'un fil de trame
DE59905063D1 (de) 1998-12-09 2003-05-22 Sultex Ag Rueti Einrichtung zum gesteuerten Bewegen eines Kettfadens
FR2794141B1 (fr) * 1999-05-27 2001-07-13 Staubli Gmbh Dispositif de formation de la foule pour la realisation d'une lisiere et metier a tisser equipe d'un tel dispositif
IT1318750B1 (it) 2000-08-09 2003-09-10 Promatech Spa Dispositivo per la formazione della legatura a giro inglese in telaidi tessitura.
EP1783254B1 (fr) 2005-11-04 2010-03-24 Promatech S.p.A. Dispositif de tissage de fils de chaîne pour la formation de lisière dans les métiers à tisser
CN101906694B (zh) * 2010-08-26 2012-05-30 广东丰凯机械股份有限公司 织机绞边装置

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0282874A2 (fr) * 1987-03-16 1988-09-21 Klöcker-Entwicklungs-GmbH Dispositif à cadres propre à obtenir une lisière à gaze
DE8814891U1 (de) * 1988-11-30 1989-03-09 Klöcker-Entwicklungs-GmbH, 4280 Borken Vorrichtung zum Bilden einer Dreherkante, insbesondere zum Einsatz auf einer Jacquard-Maschine

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH391595A (de) * 1962-02-08 1965-04-30 Sulzer Ag Drehereinrichtung für Webmaschinen
FR2141601A1 (en) * 1971-06-18 1973-01-26 Lebocey Industrie Loom - has mechanism to produce false selvedge from - two interlacing yarns and tying yarn
DE2528246A1 (de) * 1975-06-25 1977-01-13 Egelhaaf C C Fa Vorrichtung zur herstellung von dreherleisten im gewebe
DE2615989C2 (de) * 1976-04-12 1977-12-29 Maschinenfabrik Ruti AG, Ruti, Zurich (Schweiz) Verfahren und Vorrichtung an einer Webmaschine zum Bilden einer Dreherleiste

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0282874A2 (fr) * 1987-03-16 1988-09-21 Klöcker-Entwicklungs-GmbH Dispositif à cadres propre à obtenir une lisière à gaze
DE8814891U1 (de) * 1988-11-30 1989-03-09 Klöcker-Entwicklungs-GmbH, 4280 Borken Vorrichtung zum Bilden einer Dreherkante, insbesondere zum Einsatz auf einer Jacquard-Maschine

Also Published As

Publication number Publication date
DE69029219D1 (de) 1997-01-09
DE69029219T2 (de) 1997-04-03
EP0393467A1 (fr) 1990-10-24
ES2095219T3 (es) 1997-02-16
IT8920235A0 (it) 1989-04-21
ATE145677T1 (de) 1996-12-15
IT1230002B (it) 1991-09-20

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