EP0104440A1 - 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
EP0104440A1
EP0104440A1 EP19830108337 EP83108337A EP0104440A1 EP 0104440 A1 EP0104440 A1 EP 0104440A1 EP 19830108337 EP19830108337 EP 19830108337 EP 83108337 A EP83108337 A EP 83108337A EP 0104440 A1 EP0104440 A1 EP 0104440A1
Authority
EP
European Patent Office
Prior art keywords
weft
control device
weaving machine
reed
rapier weaving
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.)
Granted
Application number
EP19830108337
Other languages
German (de)
English (en)
Other versions
EP0104440B1 (fr
Inventor
Johnny Debaes
Original Assignee
Pvba Van De Wiele International
WIELE INT PVBA VAN DE
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
Priority claimed from BE1/10584A external-priority patent/BE894282A/nl
Application filed by Pvba Van De Wiele International, WIELE INT PVBA VAN DE filed Critical Pvba Van De Wiele International
Publication of EP0104440A1 publication Critical patent/EP0104440A1/fr
Application granted granted Critical
Publication of EP0104440B1 publication Critical patent/EP0104440B1/fr
Expired legal-status Critical Current

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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

  • weft control devices For rapier weaving machines with a compartment, a number of weft control devices with different components are known weft selectors - guides - cutting devices of different types.
  • a known weft steamer for double rapier weaving machines is based on a stationary weft shear, while the weft is selected and offered in front of a suction nozzle; the selected shot is cut and the free end on the side of the shot bobbin is sucked into the air stream. The suctioned shot is drawn from the air flow and brought in front of the gripper head.
  • Generating an intake stream requires an external energy source. If the same color has to be kept in a repeat for a certain period of time, this yarn is brought in front of the intake pipe.
  • the yarns of a selected color are brought in front of the rapier by means of a rotatable weft lever, which is driven by a slide bolt which is in the weaving cadence of the weaving machine.
  • a rotatable weft lever which is driven by a slide bolt which is in the weaving cadence of the weaving machine.
  • the object of the present invention is to eliminate the disadvantages mentioned by providing a shot control device which merely changes the shot or changes its position if this is necessary due to the repetition, without the need for an external energy source, such as sucked-in air, and which can be adapted particularly well to a double rapier weaving machine.
  • the shot control device is characterized in that a set of shot enrichers is set in motion by a programmable element, that a weft scissors are in solidarity with the reed and that a slide also moves synchronously with the reed.
  • the shot control device is characterized by one or more of the characteristics listed below:
  • 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 into the center of the compartment, where the entrained end of the weft thread is taken up by a pull-through gripper is taken, which leads 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 that the desired weft thread 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 corresponds to a weft thread, has the shape of a bent or folded rod which is equipped at one of its outer ends with an eyelet 14, under which one of the weft threads 4 is drawn.
  • the other outer end 15 of each indicating lever 13 is equipped with a thread which allows it to be tightened in the enrichment device 16, which can rotate freely about the axis 12 - between two containers 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 is the case nor is the case with the known weft control devices - and is not subject to the high 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 large enough to bring the selected thread 23 into the open mouth of the weft scissors 24 during the stroke 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 28 and is controlled by cams, as described in European patent application 79102460.7.
  • 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 occupancy.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
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
BE1/10584A BE894282A (nl) 1982-09-02 1982-09-02 Inslagstuurinrichting voor grijperweefmachines en grijperweefmachine met dergelijk inslagstuurinrichting uitgerust
BE1010584 1982-09-02

Publications (2)

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

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0333190A2 (fr) * 1988-03-16 1989-09-20 Hermann Wangner GmbH & Co. KG Dispositif pour l'alimentation sélective d'un parmi plusieurs fils de trame à une navette à pince
EP0644285B1 (fr) * 1993-07-29 1999-06-16 N.V. Michel Van de Wiele Métier à tisser pourvu d'un dispositif pour positionner un coupe-fil de trame
EP1052318A1 (fr) * 1999-05-12 2000-11-15 N.V. Michel Van de Wiele Dispositif d'annulation de l'insertion pour un métier à tisser

Citations (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
US3814140A (en) * 1971-06-21 1974-06-04 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
DE2748642B2 (de) * 1976-11-05 1979-04-19 Saurer Diederichs S.A., Bourgoin- Jallieu, Isere (Frankreich) Schußfadenwähler fur Webmaschinen mit ortsfest angeordneten Vorratsspulen
EP0007543A1 (fr) * 1978-07-28 1980-02-06 "P.V.B.A. Van De Wiele International" Métier à tisser avec dispositif coupe-trame et dispositif coupe-trame utilisé dans celui-ci
US4191222A (en) * 1978-02-28 1980-03-04 Macart Textiles (Machinery) Limited Weft presenter mechanisms
DE2940202A1 (de) * 1979-10-04 1981-04-16 Institute für Textil- und Faserforschung Stuttgart, 7410 Reutlingen Webmaschine

Patent Citations (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
US3814140A (en) * 1971-06-21 1974-06-04 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
DE2748642B2 (de) * 1976-11-05 1979-04-19 Saurer Diederichs S.A., Bourgoin- Jallieu, Isere (Frankreich) Schußfadenwähler fur Webmaschinen mit ortsfest angeordneten Vorratsspulen
US4191222A (en) * 1978-02-28 1980-03-04 Macart Textiles (Machinery) Limited Weft presenter mechanisms
EP0007543A1 (fr) * 1978-07-28 1980-02-06 "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

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0333190A2 (fr) * 1988-03-16 1989-09-20 Hermann Wangner GmbH & Co. KG Dispositif pour l'alimentation sélective d'un parmi plusieurs fils de trame à une navette à pince
EP0333190A3 (fr) * 1988-03-16 1991-12-11 Hermann Wangner GmbH & Co. KG Dispositif pour l'alimentation sélective d'un parmi plusieurs fils de trame à une navette à pince
EP0644285B1 (fr) * 1993-07-29 1999-06-16 N.V. Michel Van de Wiele Métier à tisser pourvu d'un dispositif pour positionner un coupe-fil de trame
EP1052318A1 (fr) * 1999-05-12 2000-11-15 N.V. Michel Van de Wiele Dispositif d'annulation de l'insertion pour un métier à tisser
BE1012676A3 (nl) * 1999-05-12 2001-02-06 Wiele Michel Van De Nv Inrichting voor inslagannulatie op een weefmachine.
US6308743B1 (en) 1999-05-12 2001-10-30 N. V. Michel Van De Wiele Device for weft cancellation on a weaving machine

Also Published As

Publication number Publication date
DE3373319D1 (en) 1987-10-08
EP0104440B1 (fr) 1987-09-02

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