EP0953664A1 - Dispositif pour couper un fil de trame à insérer et système pour insérer un fil de trame avec un tel dispositif - Google Patents

Dispositif pour couper un fil de trame à insérer et système pour insérer un fil de trame avec un tel dispositif Download PDF

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Publication number
EP0953664A1
EP0953664A1 EP98810375A EP98810375A EP0953664A1 EP 0953664 A1 EP0953664 A1 EP 0953664A1 EP 98810375 A EP98810375 A EP 98810375A EP 98810375 A EP98810375 A EP 98810375A EP 0953664 A1 EP0953664 A1 EP 0953664A1
Authority
EP
European Patent Office
Prior art keywords
weft
thread
cutting
cut
release
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Withdrawn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
EP98810375A
Other languages
German (de)
English (en)
Inventor
Klaus Berktold
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.)
Itema Switzerland Ltd
Original Assignee
Sulzer Textil AG
Sultex 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 Sulzer Textil AG, Sultex AG, Maschinenfabrik Rueti AG filed Critical Sulzer Textil AG
Priority to EP98810375A priority Critical patent/EP0953664A1/fr
Publication of EP0953664A1 publication Critical patent/EP0953664A1/fr
Withdrawn legal-status Critical Current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
    • 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
    • D03D47/12—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms wherein single picks of weft thread are inserted, i.e. with shedding between each pick
    • D03D47/125—Weft holding devices
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D49/00—Details or constructional features not specially adapted for looms of a particular type
    • D03D49/70—Devices for cutting weft threads

Definitions

  • the invention relates to a device for separating of a weft thread to be entered and an arrangement for Insert a weft using a Bring gripper and grab gripper, with a mechanism to open the thread clamp of the holer gripper and with such a device.
  • the known bringer grippers have a thread clamp, whose clamping force or clamping gap is set beforehand, around different weft threads in a shed to be entered. These weft threads have different thicknesses and / or is their surface quality different, so are the weft threads penetrate to different depths in the clamping gap. This can result in the weft being unsafe clamped or held or even damaged. Because the weft threads in the known rapier weaving machine within a weaving cycle at the same time be cut, it happens that a weft on the one hand, already without a secure hold in the clamping gap is cut and on the other hand a thin thread even before it is separated by the cutter be demolished. In the first case there are errors when inserting the weft thread, so-called In the other case, the thread loser can be entered Weft thread should be too short and in the fabric spring back, resulting in a tissue defect.
  • the invention has for its object a device to improve the severing of a weft thread.
  • the arrangement includes in essentially a weft supply 3, one Weft thread store 4, a thread brake 5, the sensor 6 for measuring the thread tension, thread feeder 7 as part a color selector, not shown, a device 8 for Cutting off the weft thread, a light barrier 9 for Scanning the thread length, a device 10 with a Servomotor 11 for opening the thread clamp of the Holer gripper, a control device 12 and one Signal generator 13, which is the one presented to each Gives the corresponding weft signal.
  • the Device includes a cutter 21 and one Holding device 22 for a weft thread 23
  • Cutting device has a motor 24, a knife 25 with a circular cutting edge that is on the Motor axis is fixed, an organ 26, a cold 27, which is attached to the motor housing and a control unit 28, which is connected to the motor 24 via electrical lines, the holding device 22 and the sensor 6 for measuring the Thread tension is connected.
  • the organ 26 is one-sided attached to the holder 27 so that the free end one Guide section for the weft 23 forms.
  • Knife 5 in the device described above can be applied.
  • the holding device 22 contains a Housing 31, a winding 32, which on the electrical Lines connected to the control unit 28, one Pole shoe 33, the winding at least partially engages a leaf spring 34 with a pin 35 and a Guide member 36 with an opening 37 for the pin.
  • Thread tension which is a measure of the holding force of this Represents weft thread in the clamping gap of the thread clamp
  • an enable signal is generated in the control unit 28 and the cutting time is determined. So that is achieved that the weft is held securely and consequently in advantageously thread losers and fabric defects be avoided.
  • the release signal is sent to the winding created, whereby the leaf spring with the pin against the The pole piece is shifted and the weft is released becomes.
  • the weft thread runs along the guide section of the organ 26 to the knife 26 without becoming loose and separated. The weft is then from the Bring gripper 1 inserted into the shed 39.
  • the device comprises the cutting device 21 and one Holding device 41 for the weft 23 Holding device has a leaf spring 42 with two hooks 43 for a weft 23.
  • the Device includes a holding element 51 with a Guide section 52 and a cutting edge 53, which at the same time forms a fixed knife and a movable knife 54.
  • the movable knife 54 is on the leaf spring 34 attached, which is part of the in Fig.5 shown assembly is.
  • electromechanical means for the release or the separation of the weft threads e.g. electronic, pneumatic or mechanical means be provided.
  • the devices described above are part of the Arrangement for inserting a weft thread by means of a Bring gripper 1 and a grab gripper 2, each have a thread clamp.
  • the control unit 28 is in the control device 12 included. Due to the different penetration depth of the weft in the Result in the clamping gap of the thread clamp of the carrier gripper 1 different thread sections up to the clamping point in the thread clamp. To compensate for these differences, are the light barrier 9 and the on the pull-out side Device 10 is provided for opening the thread clamp.
  • a cutting time As already explained, depending on the Weft thread tension determined a cutting time. Depending on the thread thickness or structure different thread ends protruding on the excerpt page. To go to the excerpt page in substantially constant projecting thread ends achieve, are two sensors in the arrangement of Fig.1 9 arranged to monitor the shot lengths. Especially the Thread structure for one and the same weft color, depending on Coil diameter or from batch to batch (at the Manufacturing) may vary, it is also advantageous (with or without sensor), a control loop (Fig. 12) to be provided to the cutting time and the Sensor signals the position for opening the thread clamp of the To control the grabber.
  • a control loop Fig. 12
  • control of the Cutting time depending on the sensor 6 measured thread tension can also predetermined, the assigned to respective weft threads - in one Data stored - cutting time values for the Thread release with holder 22 or holer looper be provided.
  • Corresponding control parameters can e.g. when entering i.e. during the "set-up" of the weaving machine be determined. With such an execution can during the continuous operation of the weaving machine on the sensor 6, which forms an additional friction point, is dispensed with become.
  • the device has a cutting device 21 and a Holding device 22 for the weft 23.
  • the Holding device 22 is connected via a control unit 28 a means 6 connected signal-transmitting to the shot depending on a measurement, e.g. of the Release or disconnect thread tension. With that Avoid gunfire.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
EP98810375A 1998-04-28 1998-04-28 Dispositif pour couper un fil de trame à insérer et système pour insérer un fil de trame avec un tel dispositif Withdrawn EP0953664A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP98810375A EP0953664A1 (fr) 1998-04-28 1998-04-28 Dispositif pour couper un fil de trame à insérer et système pour insérer un fil de trame avec un tel dispositif

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP98810375A EP0953664A1 (fr) 1998-04-28 1998-04-28 Dispositif pour couper un fil de trame à insérer et système pour insérer un fil de trame avec un tel dispositif

Publications (1)

Publication Number Publication Date
EP0953664A1 true EP0953664A1 (fr) 1999-11-03

Family

ID=8236056

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98810375A Withdrawn EP0953664A1 (fr) 1998-04-28 1998-04-28 Dispositif pour couper un fil de trame à insérer et système pour insérer un fil de trame avec un tel dispositif

Country Status (1)

Country Link
EP (1) EP0953664A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1367158A1 (fr) * 2002-05-31 2003-12-03 Lindauer Dornier Gesellschaft M.B.H Procédé et dispositif pour couper le fil de trame après l'insertion de la duite
CN102181998A (zh) * 2011-04-19 2011-09-14 鲁泰纺织股份有限公司 无左边废纱的剑杆织布机
WO2015059670A1 (fr) * 2013-10-24 2015-04-30 Nv Michel Van De Wiele Dispositif pour couper une longueur fil de trame pendant le tissage sur un métier à tisser et métier à tisser pourvu dudit dispositif
CN109162006A (zh) * 2018-08-28 2019-01-08 中材科技股份有限公司 一种适用于平面高厚度织物的引纬机构

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0129812A2 (fr) * 1983-06-24 1985-01-02 VAMATEX S.p.A. Dispositif pour guider et freiner le fil de trame à l'entrée de la foule dans un métier à tisser sans navette
EP0284766A1 (fr) * 1987-03-09 1988-10-05 Picanol N.V. Procédé pour couper un fil de trame inséré et dispositif de coupage
EP0344100A1 (fr) * 1988-05-20 1989-11-29 GebràœDer Sulzer Aktiengesellschaft Dispositif électromagnétique pour métiers à tisser
EP0357975A2 (fr) * 1988-09-08 1990-03-14 NUOVA VAMATEX S.p.A. Système de contrôle de la tension de la trame fournie à un métier à tisser à alimentation en trame continue

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0129812A2 (fr) * 1983-06-24 1985-01-02 VAMATEX S.p.A. Dispositif pour guider et freiner le fil de trame à l'entrée de la foule dans un métier à tisser sans navette
EP0284766A1 (fr) * 1987-03-09 1988-10-05 Picanol N.V. Procédé pour couper un fil de trame inséré et dispositif de coupage
EP0344100A1 (fr) * 1988-05-20 1989-11-29 GebràœDer Sulzer Aktiengesellschaft Dispositif électromagnétique pour métiers à tisser
EP0357975A2 (fr) * 1988-09-08 1990-03-14 NUOVA VAMATEX S.p.A. Système de contrôle de la tension de la trame fournie à un métier à tisser à alimentation en trame continue

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1367158A1 (fr) * 2002-05-31 2003-12-03 Lindauer Dornier Gesellschaft M.B.H Procédé et dispositif pour couper le fil de trame après l'insertion de la duite
DE10224079B3 (de) * 2002-05-31 2004-03-25 Lindauer Dornier Gmbh Verfahren und Vorrichtung zum aufeinander folgenden Eintragen von Schussfäden in das Webfach einer Webmaschine
CN102181998A (zh) * 2011-04-19 2011-09-14 鲁泰纺织股份有限公司 无左边废纱的剑杆织布机
CN102181998B (zh) * 2011-04-19 2012-08-15 鲁泰纺织股份有限公司 无左边废纱的剑杆织布机
WO2015059670A1 (fr) * 2013-10-24 2015-04-30 Nv Michel Van De Wiele Dispositif pour couper une longueur fil de trame pendant le tissage sur un métier à tisser et métier à tisser pourvu dudit dispositif
CN105765122A (zh) * 2013-10-24 2016-07-13 米歇尔.范德威尔公司 用于在织机织造过程中切断纬纱的装置及具有这种装置的织机
BE1022855B1 (nl) * 2013-10-24 2016-09-23 Nv Michel Van De Wiele Inrichting voor het afsnijden van inslaggaren gedurende het weven op een weefmachine en weefmachine voorzien van een dergelijke inrichting
US10221508B2 (en) 2013-10-24 2019-03-05 Nv Michel Van De Wiele Device for cutting off a length of weft yarn during weaving on a weaving machine and a weaving machine provided with such a device
CN105765122B (zh) * 2013-10-24 2019-08-16 范德威尔 用于在织机织造过程中切断纬纱的装置及具有这种装置的织机
CN109162006A (zh) * 2018-08-28 2019-01-08 中材科技股份有限公司 一种适用于平面高厚度织物的引纬机构
CN109162006B (zh) * 2018-08-28 2020-06-12 南京玻璃纤维研究设计院有限公司 一种适用于平面高厚度织物的引纬机构

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