EP0104440B1 - Mécanisme de contrôle de fils de trame pour métier à tisser sans navette - Google Patents

Mécanisme de contrôle de fils de trame pour métier à tisser sans navette Download PDF

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Publication number
EP0104440B1
EP0104440B1 EP19830108337 EP83108337A EP0104440B1 EP 0104440 B1 EP0104440 B1 EP 0104440B1 EP 19830108337 EP19830108337 EP 19830108337 EP 83108337 A EP83108337 A EP 83108337A EP 0104440 B1 EP0104440 B1 EP 0104440B1
Authority
EP
European Patent Office
Prior art keywords
weft
control device
gripper
reed
servers
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
Application number
EP19830108337
Other languages
German (de)
English (en)
Other versions
EP0104440A1 (fr
Inventor
Johnny Debaes
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.)
N.V. MICHEL VAN DE WIELE
Original Assignee
Individual
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Filing date
Publication date
Priority claimed from BE1/10584A external-priority patent/BE894282A/nl
Application filed by Individual filed Critical Individual
Publication of EP0104440A1 publication Critical patent/EP0104440A1/fr
Application granted granted Critical
Publication of EP0104440B1 publication Critical patent/EP0104440B1/fr
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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
    • D03D47/38—Weft pattern mechanisms

Definitions

  • the invention relates to a weft control device for a rapier weaving machine with a weft selector, which comprises one or more sets of enrichers, weft scissors and a link for separating the selected weft thread from the other weft threads, which separating element brings the selected weft thread over the rapier head of the rapier.
  • a shot control device of this type is known.
  • a stationary, cam-controlled weft shear is provided which cuts the weft after it has been gripped by the gripper.
  • the separating member is formed by a cam-controlled pivot lever, which is only intended to facilitate the detachment of the respectively selected thread from the bundle of the other weft threads (see FIG. 3).
  • the object of the invention is to provide a weft control device of simplified construction and reliable function, which can be adapted particularly well to double rapier weaving machines.
  • the weft scissors are fixedly connected to the reed and have a clamping piece, which grips the selected weft thread, and a cutting knife for cutting the gripped weft thread before gripping the weft thread by the gripper, and in that the separating member is linear from one Movable slide is formed, which can be moved back and forth synchronously with the reed in order to bring the selected weft thread between the clamping piece and the respective enricher in the retracted position of the reed over the hook head.
  • Fig. 1 only the components of a rapier weaving machine with a compartment are shown, which are necessary to describe the invention.
  • the reed 1 with the top layer of warp threads 2 and the bottom layer of warp threads 3 form a compartment, whereby the weft thread 4 is carried by a gripper 5 to the center of the compartment, where the entrained end of the weft thread is carried by a pull-through gripper that passes the weft through the second half of the compartment.
  • the weft thread is pressed against the fabric 6 by the stop movement of the reed 1, which now counts one more weft thread.
  • weft thread is accepted by a system of stationary packages 7 and these are guided to a weft selector 10 by means of stationary guides 8 and 9.
  • stationary guides 8 and 9 In fact, different types and / or colors of weft are commonly used to make a fabric.
  • the fabric drawing or the motif is determined by the sequence of the weft threads by type and color, combined with the sequence of the warp threads side by side. It is therefore necessary for the desired weft thread to be selected or selected from among the various available ones in order to be taken along by the gripper 5.
  • the shot selector 10 is further illustrated with its special features in Fig. 2. It consists of a stationary frame 11 in which there is an axis 12 about which a system indicating lever 13 can freely rotate at a certain angle.
  • the axis 12 of the pick selector in the shot control device according to the invention is horizontal and parallel to the reed surface.
  • Each indicating lever 13 (see Fig. 2) which coincides with a weft thread is in the form of a bent or folded rod which is equipped at one of its outer ends with an eyelet 14 therethrough one of the weft threads 4 is pulled.
  • the other end 15 of each indicating lever 13 is attached to the respective enrichment device 16, which can rotate freely about the axis 12 - between two parts 17.
  • the enricher 16 is also equipped with an arm 18 which forms a certain angle with the arm 19 in which the indicating lever 13 is fixed.
  • the enricher 16 is coupled to a cable 20, which allows the enricher 16 to make a rotating movement about the axis 12.
  • Each cable 20 is then connected to a lever 21 of a freely programmable element 22 of the open compartment type, as is the case, for example, with a jacquard or dobby.
  • Each selector (16) of the weft selector can assume two positions: the retirement when the weft 4 must not be carried by the hook 5 and the specified position when the weft 23 has been selected to be taken by the hook 5.
  • the movement is controlled in the weft control device according to the invention from the freely programmable element 22, with the advantage that the selected weft thread 23 can remain in its predetermined position as long as this is provided in the repeat and is not moved unnecessarily - as this is still the case with the known weft control devices - and is not subject to the rapid rhythm of the weaving machine speed - with all the risks associated with a rapid movement, in particular the tearing and mixing of the weft threads.
  • the movement of the selected weft thread 23 from its rest position to its predetermined position is far enough to bring the selected thread 23 into the open mouth of the weft scissors 25 during the stop movement of the Webriets; the remaining weft threads 4 are not detected.
  • the weft scissors 25 which is attached to the striking frame, perform a tilting movement which is followed by a cutting movement, the weft thread being gripped by a clamping piece 26 (FIG. 3) and then cut by a cutting knife which is made from a fixed Knife 27 and a movable knife 25 and is controlled by cams, as described in EP-A-7543.
  • the weft scissors 25 come back with the reed 1 in order to bring one end of the selected weft thread 23 in front of the gripper 5, either from the same feeder 16, which has then remained in the specified position, or from one other enricher 16 who has replaced the previous one.
  • FIG. 1, Fig. 4 Another identification of the shot control device according to the invention is the slide 29 (Fig. 1, Fig. 4), which is formed by an elongated plate with a protruding piece 30.
  • This slide 29 is located close to the weft selector 10 and makes a horizontal back and forth movement, in synchronism with the reed 1, as is controlled from the reed axis.
  • the slider 28 moves forward with the protruding piece 30 and brings the new weft end over the hook head 31, so that the new weft thread 23 can be easily removed the gripper 5 is brought into the compartment.
  • the weft control device according to the invention is particularly suitable for double rapier weaving machines (FIG. 6) due to its simplified mechanism and the space requirement.

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

Claims (10)

1. Mécanisme de commande de la trame pour métiers à tisser à pinces, muni d'un sélecteur de fils (10) comprenant une ou plusieurs séries de leviers de présentation (16), un coupe-fil (25) et un élément séparant le fil de trame sélectionné (23) des autres fils de trame, lequel élément séparateur transfère le fil de trame sélectionné (23) vers la tête (31) de la pince (5), caractérisé en ce que le coupe-fil (25) est fixé au battant du peigne (1) et comprend aussi bien un serre-fil (26) serrant le fil sélectionné (23) qu'une paire de couteaux (27, 28) pour couper le fil de trame avant la prise du fil de trame par la pince et en ce que l'élément séparateur est constitué par un coulisseau (29) mobile de manière linéaire, doué d'un mouvement de va et vient synchrone avec le peigne (1) de manière à porter le fil de trame sélectionné entre le serre-fil (26) et le levier concerné de présentation (6) au-dessus de la tête de la pince (31) au cours du mouvement de retour du peigne (1).
2. Mécanisme de commande de la trame suivant la revendication 1, caractérisé en ce que les leviers de présentation (16) du sélecteur de trame (10) sont montés sur un axe horizontal parallèle au plan du peigne.
3. Mécanisme de commande de la trame suivant les revendications 1 ou 2, caractérisé en ce que les leviers de présentation (16) comprennent une barre arquée (13).
4. Mécanisme de commande de la trame suivant une des revendications précédentes caractérisé en ce que les coulisseaux (29) qui se trouvent à côté du sélecteur de trame (10) et portent le fil de trame sélectionné (23) à la pince (5), sont commendés à partir de l'axe de commande du peigne.
5. Mécanisme de commande de la trame suivant une des revendications précédentes caractérisé à ce que le coulisseau (29), qui se trouve à côté du sélectionneur de trame, comprend un bec (30) permettant de saisir légèrement le fil de trame sélectionné.
6. Mécanisme de commande de la trame suivant une des revendications précédentes caractérisé en ce qu'il comprend un élément librement programmable (2) du type foule ouverte.
7. Métiers à tisser à doubles pinces suivis d'un mécanisme de commande de la trame suivant une des revendications précédentes caractérisé en ce que le mécanisme de commande de la trame comprend un sélectionneur de fils de trame (10) muni d'une double série de leviers.
8. Métier à tisser à doubles pinces suivant la revendication 7, caractérisé en qu'une série de leviers se trouve au-dessus de l'autre.
9. Métier à tisser à doubles pinces suivant une des revendications 7 ou 8 caractérisé en que le mécanisme de commande de la trame comprend deux coulisseaux (29, 29') l'un au-dessus de l'autre.
10. Métier à tisser à doubles pinces suivant une des revendications 7 à 9 caractérisé en ce que le mécanisme de commande de la trame comprend deux coupe-fils (25, 25') l'un au-dessus de l'autre.
EP19830108337 1982-09-02 1983-08-24 Mécanisme de contrôle de fils de trame pour métier à tisser sans navette Expired EP0104440B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BE1010584 1982-09-02
BE1/10584A BE894282A (nl) 1982-09-02 1982-09-02 Inslagstuurinrichting voor grijperweefmachines en grijperweefmachine met dergelijk inslagstuurinrichting uitgerust

Publications (2)

Publication Number Publication Date
EP0104440A1 EP0104440A1 (fr) 1984-04-04
EP0104440B1 true EP0104440B1 (fr) 1987-09-02

Family

ID=3862944

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19830108337 Expired EP0104440B1 (fr) 1982-09-02 1983-08-24 Mécanisme de contrôle de fils de trame pour métier à tisser sans navette

Country Status (2)

Country Link
EP (1) EP0104440B1 (fr)
DE (1) DE3373319D1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3808777A1 (de) * 1988-03-16 1989-10-05 Wangner Gmbh Co Kg Hermann Vorrichtung zur wahlweisen zufuehrung eines von mehreren schussfaeden zu einem greiferprojektil
BE1008211A5 (nl) * 1993-07-29 1996-02-13 Wiele Michel Van De Nv Inrichting voor het positioneren van een inslagschaar op een weefmachine.
BE1012676A3 (nl) 1999-05-12 2001-02-06 Wiele Michel Van De Nv Inrichting voor inslagannulatie op een weefmachine.

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3593754A (en) * 1969-07-03 1971-07-20 North American Rockwell Filling control mechanism
GB1401051A (en) * 1971-06-21 1975-07-16 Somet Soc Mec Tessile Cutting device for looms
DE2255918A1 (de) * 1972-11-15 1974-06-12 Lentz Fa S Farbwaehler
US4022254A (en) * 1975-08-25 1977-05-10 Rockwell International Corporation Weft yarn control device
FR2370117A1 (fr) * 1976-11-05 1978-06-02 Saurer Diederichs Sa Selecteur de fils de trame pour machine a tisser sans navette
US4191222A (en) * 1978-02-28 1980-03-04 Macart Textiles (Machinery) Limited Weft presenter mechanisms
EP0007543B1 (fr) * 1978-07-28 1983-04-06 "P.V.B.A. Van De Wiele International" Métier à tisser avec dispositif coupe-trame et dispositif coupe-trame utilisé dans celui-ci
DE2940202A1 (de) * 1979-10-04 1981-04-16 Institute für Textil- und Faserforschung Stuttgart, 7410 Reutlingen Webmaschine

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EP0104440A1 (fr) 1984-04-04
DE3373319D1 (en) 1987-10-08

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