EP0155431A1 - Procédé d'insertion de fil de trame pour un métier à tisser et métier à tisser pour réaliser ce procédé - Google Patents

Procédé d'insertion de fil de trame pour un métier à tisser et métier à tisser pour réaliser ce procédé Download PDF

Info

Publication number
EP0155431A1
EP0155431A1 EP84810114A EP84810114A EP0155431A1 EP 0155431 A1 EP0155431 A1 EP 0155431A1 EP 84810114 A EP84810114 A EP 84810114A EP 84810114 A EP84810114 A EP 84810114A EP 0155431 A1 EP0155431 A1 EP 0155431A1
Authority
EP
European Patent Office
Prior art keywords
weft
thread
deflecting
lever
machine according
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Withdrawn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
EP84810114A
Other languages
German (de)
English (en)
Inventor
Gianni Riboli
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.)
Maschinenfabrik Sulzer Rueti AG
Maschinenfabrik Rueti AG
Original Assignee
Maschinenfabrik Sulzer Rueti AG
Maschinenfabrik Rueti AG
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 Maschinenfabrik Sulzer Rueti AG, Maschinenfabrik Rueti AG filed Critical Maschinenfabrik Sulzer Rueti AG
Priority to EP84810114A priority Critical patent/EP0155431A1/fr
Publication of EP0155431A1 publication Critical patent/EP0155431A1/fr
Withdrawn legal-status Critical Current

Links

Images

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

Definitions

  • the invention relates to a method for the insertion of weft threads in weaving machines, in particular jet looms, with a device for deflecting the weft thread.
  • the invention further relates to a weaving machine for carrying out the method.
  • the weft thread deflecting device is used to pull back through the deflecting device that weft thread that is not to be inserted into the shed during the following weft.
  • the deflection device is actuated only after the previous weft insertion has ended.
  • the invention has for its object to provide a weft insertion method, which is particularly suitable for air jet looms.
  • Particularly sensitive yarns should also be able to be stretched and the stretching should as far as possible be completed at the end of the entry.
  • the method according to the invention consists in that the deflection device is brought into an effective position before the weft insertion ends.
  • the process is particularly suitable for heavy or delicate yarns and also particularly for weaving machines with a large weaving width. In these cases, even when using auxiliary nozzles distributed over the entire width of the weave, it is not always possible to keep the weft yarn sufficiently stretched as it is being inserted.
  • a weaving machine for carrying out the method is characterized by a thread deflecting lever which is arranged on the weft path - in the weft direction - in front of the reed and can be moved transversely to the weft direction and is controlled such that it is pivoted into the operative position before the end of the weft insertion.
  • the thread deflection lever is the only deflection or braking element that acts on the weft thread during the weft insertion.
  • This type is suitable e.g. especially for sensitive glass fiber yarns, which are protected by the gentle braking towards the end of the weft insertion. Sudden braking, e.g. can be avoided by the hard action (friction) of a weft thread clamp on the weft side of the weaving machine.
  • the air jet weaving machine designated as a whole by 31, contains two side cheeks 32, 33, a goods tree 34 arranged in between, a reed 35, a compressed air distribution container 45, on the two alternately activated main nozzles 51, 52 via valves 44 and auxiliary nozzles arranged over the weaving width W. 1 - 24 are connected.
  • the auxiliary nozzles are grouped into groups A - F of four nozzles each. Groups A - F are activated successively during the entry, so that a moving field corresponding to the tip 48 of the weft thread 53 progressing in the shed arises.
  • the traveling field is controlled by an electronic device 43.
  • the compressed air tank 45 is connected via a line 46 to a compressed air source 47, e.g. connected a compressor.
  • two weft supply bobbins 61, 62 are arranged, from which the two weft threads 53, 53a alternately follow and over the weft store, designated as a whole with 64.65 switched thread deflection lever 66,67 to the nozzles 52,51.
  • the weft thread 53a is just inserted from these.
  • the F adenumlenkhebel 66,67 each form for the associated weft thread 53,53a only the deflection or braking element, which acts upon, or shortly after the entry of the weft thread.
  • a special thread clamp (friction brake) between parts 61.64; 62.65; 64.66 or 65.67 is missing.
  • the slats attached to reed 35 are designated 71. They contain recesses 72, which form a tunnel and thus a guide channel 72a for air flow and wefts 53a.
  • lever 66 is moved down to position H at 250 °. Thread 53 is deflected and experiences a first, gentle braking during the entry. Between 250 ° and 340 °, the lever 66 is further in the Position J lowered in order to reach the starting position Y in a further, slow downward movement. Meanwhile, in the second revolution M of the main shaft at 80 0, the entry of the thread 53a (dashed curve T) begins. It lasts according to the previous entry of the thread 53 to 235 ° of this main shaft rotation. In this case, lever 67 is moved into positions G - K by a cam drive 101 in accordance with the movement of lever 66.
  • the curl 81 can arise in particular in that only the last four auxiliary nozzles 21-24 of group F blow at the end of the weft insertion. With a large weaving width W of e.g. 3.5 m and more and with heavy weft yarns, the effect of the last auxiliary nozzles 21 - 24 is no longer sufficient to fully stretch the thread.
  • the stretching nozzle 55 acts as a buffer reservoir from which a certain length of weft thread can be withdrawn to the left in FIG. 1, as a result of which the weft thread tip 48a in the stretching nozzle 55 lowers against the effect of the upward air flow.
  • the weft thread store 65 used in this example contains sorting needles 84 rotating according to arrow 83.
  • Moving according to arrow 83 moves e.g. a sorting needle 84 - while immersed in the circumference 85 of the store - in the position 84a indicated by dash-dotted lines, into which it arrives by a drive (not shown).
  • the winding package 109 located to the right of 84 in FIG. 4 can be completely pulled off when thread 53a is inserted. After the end of the entry, thread 53a is cut off at 122 by scissors 113.
  • a thread tail 53b connected to the bobbin 62 is formed. While the needle 84 moves to the right by the amount X and further windings 114 are wound to the left of it, the lowering J, K at lever 67 prevents the tip 53b of the thread 53a from entering the tunnel 72a. When thread 53 is inserted, a corresponding process occurs in parts 64, 66.
  • the device can also be used for one-weft insertion methods with only a single weft thread 53, memory 64 and lever 66. It may also be used for other weaving machine categories, for example for projectile machines. Furthermore, weft thread stores other than those shown in FIGS. 2.4 can also be shown use the set memory with sorting needles. The weft thread can also be deflected by a lever or slide provided with an eyelet or by other, for example hook-shaped deflecting elements.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
EP84810114A 1984-03-07 1984-03-07 Procédé d'insertion de fil de trame pour un métier à tisser et métier à tisser pour réaliser ce procédé Withdrawn EP0155431A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP84810114A EP0155431A1 (fr) 1984-03-07 1984-03-07 Procédé d'insertion de fil de trame pour un métier à tisser et métier à tisser pour réaliser ce procédé

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP84810114A EP0155431A1 (fr) 1984-03-07 1984-03-07 Procédé d'insertion de fil de trame pour un métier à tisser et métier à tisser pour réaliser ce procédé

Publications (1)

Publication Number Publication Date
EP0155431A1 true EP0155431A1 (fr) 1985-09-25

Family

ID=8193003

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84810114A Withdrawn EP0155431A1 (fr) 1984-03-07 1984-03-07 Procédé d'insertion de fil de trame pour un métier à tisser et métier à tisser pour réaliser ce procédé

Country Status (1)

Country Link
EP (1) EP0155431A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0239055A1 (fr) * 1986-03-25 1987-09-30 ROJ ELECTROTEX S.p.A. Dispositif pour l'amortissement des oscillations et des vibrations des fils de trame dans les fournisseurs de trame pour métiers à jet d'air
EP0356380A1 (fr) * 1988-08-25 1990-02-28 Sulzer RàœTi Ag Procédé pour éviter les pics de contrainte dans la trame lors de son introduction au moment du freinage
EP0385931A1 (fr) * 1989-03-02 1990-09-05 GebràœDer Sulzer Aktiengesellschaft Métier à tisser avec râtelier porte-bobines compact
WO1993006278A2 (fr) * 1991-09-23 1993-04-01 Iro Ab Procede et metier mecanique
WO1993006279A2 (fr) * 1991-09-23 1993-04-01 Iro Ab Metier mecanique et frein d'insertion pour metiers mecaniques
WO1998005812A1 (fr) * 1996-07-31 1998-02-12 Nuova Roj Electrotex S.R.L. Procede de commande de l'insertion du fil de trame dans un metier

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH251626A (de) * 1944-12-09 1947-11-15 Sulzer Ag Verfahren zur Regelung der Spannung des Schussfadens bei Greiferwebstühlen.
CH253927A (de) * 1945-11-24 1948-04-15 Sulzer Ag Verfahren zum Spannen des Schussfadens bei Webmaschinen.
US3744533A (en) * 1971-08-03 1973-07-10 Teijin Ltd Adjustment of filling tension in fluid jet loom and apparatus thereof
DE2700119A1 (de) * 1976-05-31 1977-12-22 Rueti Te Strake Bv Webmaschine
DE2751380A1 (de) * 1976-11-17 1978-05-18 Rueti Te Strake Bv Fadenliefervorrichtung fuer textilmaschinen
FR2466548A1 (fr) * 1979-09-27 1981-04-10 Cretin Louis Atel Dispositif de retirage de trame apres insertion, pour une machine a tisser avec reserve de trame fixe
CH623865A5 (en) * 1978-08-09 1981-06-30 Moessinger Sa Method for adjusting the speed of a yarn inserted in the shape of a loop
DE3203876A1 (de) * 1982-02-05 1983-08-18 Guenne Webmaschf Gmbh Vorrichtung zum getrennten und/oder gemeinsamen einblasen verschiedenfarbiger schussfaeden bei luftduesen-webmaschinen

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH251626A (de) * 1944-12-09 1947-11-15 Sulzer Ag Verfahren zur Regelung der Spannung des Schussfadens bei Greiferwebstühlen.
CH253927A (de) * 1945-11-24 1948-04-15 Sulzer Ag Verfahren zum Spannen des Schussfadens bei Webmaschinen.
US3744533A (en) * 1971-08-03 1973-07-10 Teijin Ltd Adjustment of filling tension in fluid jet loom and apparatus thereof
DE2700119A1 (de) * 1976-05-31 1977-12-22 Rueti Te Strake Bv Webmaschine
DE2751380A1 (de) * 1976-11-17 1978-05-18 Rueti Te Strake Bv Fadenliefervorrichtung fuer textilmaschinen
CH623865A5 (en) * 1978-08-09 1981-06-30 Moessinger Sa Method for adjusting the speed of a yarn inserted in the shape of a loop
FR2466548A1 (fr) * 1979-09-27 1981-04-10 Cretin Louis Atel Dispositif de retirage de trame apres insertion, pour une machine a tisser avec reserve de trame fixe
DE3203876A1 (de) * 1982-02-05 1983-08-18 Guenne Webmaschf Gmbh Vorrichtung zum getrennten und/oder gemeinsamen einblasen verschiedenfarbiger schussfaeden bei luftduesen-webmaschinen

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0239055A1 (fr) * 1986-03-25 1987-09-30 ROJ ELECTROTEX S.p.A. Dispositif pour l'amortissement des oscillations et des vibrations des fils de trame dans les fournisseurs de trame pour métiers à jet d'air
US4949763A (en) * 1986-03-25 1990-08-21 Roj Electrotex S.P.A. Device for damping weft yarn oscillations and vibrations in weft feeders for air looms
EP0356380A1 (fr) * 1988-08-25 1990-02-28 Sulzer RàœTi Ag Procédé pour éviter les pics de contrainte dans la trame lors de son introduction au moment du freinage
US4962796A (en) * 1988-08-25 1990-10-16 Sulzer Brothers Limited Weft brake with damping control
EP0385931A1 (fr) * 1989-03-02 1990-09-05 GebràœDer Sulzer Aktiengesellschaft Métier à tisser avec râtelier porte-bobines compact
WO1990010104A1 (fr) * 1989-03-02 1990-09-07 Gebrüder Sulzer Aktiengesellschaft Metier automatique a support de bobines compact
WO1993006278A2 (fr) * 1991-09-23 1993-04-01 Iro Ab Procede et metier mecanique
WO1993006279A2 (fr) * 1991-09-23 1993-04-01 Iro Ab Metier mecanique et frein d'insertion pour metiers mecaniques
WO1993006278A3 (fr) * 1991-09-23 1993-05-13 Iro Ab Procede et metier mecanique
WO1993006279A3 (fr) * 1991-09-23 1993-05-13 Iro Ab Metier mecanique et frein d'insertion pour metiers mecaniques
US5417251A (en) * 1991-09-23 1995-05-23 Iro Ab Programmable weft insertion brake for looms
US5462094A (en) * 1991-09-23 1995-10-31 Iro Ab Sensor activated weft tension device
WO1998005812A1 (fr) * 1996-07-31 1998-02-12 Nuova Roj Electrotex S.R.L. Procede de commande de l'insertion du fil de trame dans un metier
US6105627A (en) * 1996-07-31 2000-08-22 Nuova Roj Electrotex S.R.L. Method to control weft yarn insertion in a loom

Similar Documents

Publication Publication Date Title
DE3200638A1 (de) Schuetzenlose webmaschine
EP0134377B1 (fr) Dispositif pour replier les bouts de fil de trame dans un métier à tisser
EP0149969B1 (fr) Métier à tisser
EP0155431A1 (fr) Procédé d'insertion de fil de trame pour un métier à tisser et métier à tisser pour réaliser ce procédé
CH671590A5 (fr)
DE202019101093U1 (de) Vorrichtung zum Schneiden der Schussfäden in einer Greiferwebmaschine ohne Bildung einer falschen Webkante
EP0617153B1 (fr) Procédé pour influencer le mouvement d'un fil de trame tiré d'une bobine de réserve vers le dispositif d'insertion de trame d'un métier à tisser et métier à tisser pour l'exécution de ce procédé
DE3220064C2 (fr)
EP1606442B1 (fr) Metier mecanique, notamment machine a tisser des rubans
EP0592749A1 (fr) Procédé de tissage et métier à tisser pour la fabrication de tissu-éponge
DE1942130C3 (de) Verfahren und Vorrichtung zum Speichern von Schußfadenlängen für eine Düsenwebmaschine
EP0185917B1 (fr) Métier à tisser à projectiles
DE2724923A1 (de) Webmaschine
EP0179178A1 (fr) Procédé et dispositif pour préparer une longueur de trame pour un métier à tisser
DE2239448C3 (de) Vorrichtung zum Übergeben eines Schußfadenstücks an einen Webschützen einer Wellenwebmaschine
DD243304B1 (de) Vorrichtung zur schussfadenpositionierung an greiferwebmachinen
DE1815186C (de) Einrichtung zum Vorlegen und Festhalten eines Schußfadens fur Webmaschinen, bei denen jeder Schußfaden einzeln von einer außerhalb des Webfaches angeordneten Vorratsspule durch Eintragorgane in das Webfach einfuhrbar ist
EP0310695A1 (fr) Navette de tissage
DE304962C (fr)
CH508074A (de) Webmaschine
DE1272844B (de) Verfahren zum Herstellen eines Gewebes mit abgeschnittenen Schussfaeden und einer von umgelegten Schussfadenenden gebildeten Leiste
DE1535756C (de) Greiferwebstuhl fur Axminster Tep piche
DE828225C (de) Webstuhl mit kontinuierlicher Schussfadenzufuehrung
DE2559967C2 (de) Webmaschine zur Herstellung eines Wechselschuli-Papiermaschinensiebes
EP0134375A1 (fr) Dispositif pour faire fonctionner un métier à jet d'air et métier pourvu d'un tel dispositif

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19840309

AK Designated contracting states

Designated state(s): BE CH DE FR IT LI

17Q First examination report despatched

Effective date: 19860915

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19870125

RIN1 Information on inventor provided before grant (corrected)

Inventor name: RIBOLI, GIANNI