EP3754069A1 - Schussfadenspannungsvorrichtung und verfahren zum betrieb der schussfadenspannungsvorrichtung - Google Patents

Schussfadenspannungsvorrichtung und verfahren zum betrieb der schussfadenspannungsvorrichtung Download PDF

Info

Publication number
EP3754069A1
EP3754069A1 EP19180425.1A EP19180425A EP3754069A1 EP 3754069 A1 EP3754069 A1 EP 3754069A1 EP 19180425 A EP19180425 A EP 19180425A EP 3754069 A1 EP3754069 A1 EP 3754069A1
Authority
EP
European Patent Office
Prior art keywords
weft thread
deflection
weft
deflection element
path
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Withdrawn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
EP19180425.1A
Other languages
English (en)
French (fr)
Inventor
Geert Debuf
Hans Desmet
Charles Beauduin
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.)
Vandewiele NV
Original Assignee
Vandewiele NV
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 Vandewiele NV filed Critical Vandewiele NV
Priority to EP19180425.1A priority Critical patent/EP3754069A1/de
Priority to US17/619,357 priority patent/US20220298680A1/en
Priority to CN202080039345.1A priority patent/CN113924390B/zh
Priority to EP20728501.6A priority patent/EP3983585A1/de
Priority to PCT/EP2020/064951 priority patent/WO2020254091A1/en
Publication of EP3754069A1 publication Critical patent/EP3754069A1/de
Withdrawn legal-status Critical Current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
    • D03D47/347—Yarn brakes
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03J—AUXILIARY WEAVING APPARATUS; WEAVERS' TOOLS; SHUTTLES
    • D03J5/00—Shuttles
    • D03J5/24—Tension devices

Definitions

  • the present invention relates to a weft thread tensioning device as well as a method of operating a weft thread tensioning device.
  • EP 0 902 109 A1 discloses a weft thread tensioning device comprising a hook-shaped weft thread tensioning element positioned between two weft thread passage elements, each one of the weft thread passage elements comprising a weft thread passage opening.
  • a weft thread extending through the weft thread passage openings extends along a substantially straight weft thread path between these weft thread passage openings.
  • the hook-shaped weft thread deflection element is linearly moved substantially perpendicular with respect to the substantially straight weft thread path for pulling the weft thread out of the straight weft thread path extending between the two weft thread passage elements.
  • EP 1 783 255 A1 discloses a yarn-recovery braking device having two path defining eyelets through which a yarn extends along a substantially straight yarn path.
  • a yarn deviating arm has two yarn-guide eyelets positioned between the two path defining eyelets.
  • EP 0 467 059 A1 discloses a weft thread tensioning device having a lever acting as a weft thread deflection element between two weft thread passage elements.
  • a weft thread extending across the weft thread passage elements can be deflected out of the substantially straight weft thread path.
  • the lever is driven by means of a linear electric motor for carrying out the swiveling movement.
  • Such weft thread tensioning devices are used for making sure that, during each phase of a weft insertion cycle, there is a controlled tension of the weft thread for compensating different speeds of movement of such a weft thread during a weft insertion cycle and thereby avoiding a loss of tension, for example, during a phase in which the speed of movement of a weft thread decreases, for example, when picking up a weft thread by means of an inserting rapier or when inserting a weft thread from a inserting rapier to a receiving rapier of a double rapier weft insertion means.
  • a weft thread tensioning device comprising:
  • This weft thread tensioning device is characterized in that the deflection element drive comprises a rotary electric motor, and that the weft thread deflection element is coupled to a rotor shaft of the rotary electric motor and is arranged for carrying out a swiveling movement about a swivel axis that is substantially parallel to the straight weft thread path.
  • the weft thread tensioning device provides a simple structure with a reduced number of components necessary for moving a weft thread deflection element and, thereby, deflecting and tensioning a weft thread associated with the weft thread deflection element.
  • This deflecting and tensioning action also provides a recuperation action in which the weft thread is pulled in a direction opposite to the direction in which it is introduced into a shed formed between the warp threads on a weaving machine.
  • the weft thread deflection element may be positioned in a center area between the weft thread passage elements in the direction of the straight weft thread path, such that a substantially symmetrical deflection characteristic at each one of the two weft thread passage elements can be obtained.
  • the weft thread deflection element may comprise a deflection lever connected to a deflection shaft rotatable about the swivel axis, the deflection lever extending from the swivel axis with a lever length exceeding a distance between the weft thread passage elements and the swivel axis.
  • At least one of the weft thread passage elements has a weft thread passage opening for receiving a weft thread such as to extend through the weft thread passage opening.
  • the object is achieved by a method of operating a weft thread tensioning device, preferably a weft thread tensioning device according to the present invention, wherein:
  • the operating characteristic of the weft thread tensioning device can be adapted to the operating characteristic of a weaving machine. While, in the first deflection operating mode, a control of the positioning of a weft thread deflection element is carried out, in the second deflection operating mode, a force control of the force applied to the weft thread deflection element by means of the deflection element drive and, thereby, a control of the force applied to the weft thread by means of the weft thread deflection element is carried out.
  • the deflection element drive may be controlled such as to move the weft thread deflection element from a starting position or an intermediate position to the predetermined deflection position upon each deflection operation, wherein, when being positioned in the starting position, the weft thread deflection element does not interact with a weft thread extending across the weft thread passage elements for deflecting a weft thread out of the straight weft thread path and, when being positioned in the intermediate position, the weft thread deflection element is positioned between the starting position and the predetermined deflection position, and wherein, when being moved from the starting position towards the deflection position, the weft thread deflection element is moved across the straight weft thread path for deflecting a weft thread extending across the weft thread passage elements, a maximum weft thread deflection being obtained when the weft thread deflection element is positioned in the predetermined deflection position.
  • At least one deflection operation may be carried out during a weft insertion cycle, for example, in a phase in which the speed of movement of a weft thread decreases.
  • a plurality of deflection operations may be carried out during a weft insertion cycle, in particular for compensating for a plurality of speed variations during a weft insertion cycle.
  • the predetermined deflection position may be kept constant for at least two consecutive deflection operations and/or at least two consecutive weft insertion cycles.
  • Such an operating characteristic is of particular advantage if, in consecutive deflection operations and weft insertion cycles, respectively, the same characteristic of the movement of a weft thread is provided.
  • the predetermined deflection position may be varied between at least two consecutive deflection operations and/or at least two consecutive weft insertion cycles.
  • the deflection element drive may be controlled such as to move the weft thread deflection element from a starting position towards a deflection position, wherein, when being positioned in the starting position, the weft thread deflection element does not interact with a weft thread extending across the weft thread passage elements for deflecting a weft thread out of the straight weft path, and wherein, when being moved from the starting position towards the deflection position, the weft thread deflection element is moved across the straight weft thread path for deflecting a weft thread extending across the weft thread passage elements, wherein the predetermined deflection drive force applied to the weft thread deflection element is varied in dependence on a counter force applied by the deflected weft thread to the weft thread deflection element.
  • the predetermined deflection drive force may be adjusted such as to provide a spring-like force characteristic, such that an increasing counter force applied to the weft thread deflection element leads to an increasing deflection drive force.
  • the weft thread deflection element can be controlled such as to simulate the characteristic of a spring pretensioning the weft thread deflection element against the weft thread to be deflected. If the tension of the weft thread increases during a weft insertion cycle, the counter force applied to the weft thread deflection element by the weft thread increases, what leads to a slight back pushing of the weft thread deflection element.
  • the deflection drive force applied to the weft thread deflection element by means of the deflection element drive is increased, as would be the case, if this force were applied by means of a spring having a spring constant and providing a spring force increasing with an increasing spring load.
  • the second deflection operating mode may be maintained during at least one weft insertion cycle, preferably during a plurality of consecutive weft insertion cycles.
  • the first deflection operating mode may be used, if the number of weft insertion cycles per minute is above 20, what means, that this first deflection operating mode is preferably used, when a weaving machine is operating at a rather high speed of operation.
  • the second deflection operating mode may be used, if the number of weft insertion cycles per minute is below or at 20, such that such a deflection operating mode will preferably be used in low speed operating conditions of a weaving machine.
  • the first deflection operating mode may be used in association with a weft thread, if this weft thread is selected for the insertion into a shed formed between warp threads during a weft insertion cycle
  • the second deflection operating mode may be used in association with a weft thread, if this weft that is not selected for the insertion into a shed formed between warp threads during a weft insertion cycle.
  • the first deflection operating mode is used for tensioning and recuperating this weft thread while, if a particular weft thread is not selected and, therefore, is not used for inserting into a shed during a weft insertion cycle and is substantially at a stand still, the second deflection operating mode is used for keeping the weft thread under tension.
  • a weft thread tensioning device 10 is shown.
  • the weft thread tensioning device 10 comprises a weft thread path defining arrangement 12 defining a substantially straight path P of a weft thread extending across this weft thread path defining arrangement 12.
  • the weft thread path defining arrangement 12 has two plates 14, 16 fixed to a carrier 18.
  • a weft thread passage opening 20, 22 is provided by means of a respective weft thread passage element 24, 26 fixed to the associated one of the plates 14, 16.
  • the weft thread passage openings 20, 22 are arranged at a distance with respect to each other along the substantially straight weft thread path P.
  • a weft thread extending through these weft thread passage openings 20, 22 extends along the weft thread path P.
  • the weft thread extending through the weft thread passage openings 20, 22 may contact the weft thread passage elements 24, 26 at different circumferential positions such that, while still being a substantially straight weft thread path P, this weft thread path P that also can be considered as representing a weft thread in Figs. 1 and 2 can be slightly inclined with respect to the one shown in Figs. 1 and 2 .
  • a weft thread is supposed to extend through the center of each one of the weft thread passage openings 20, 22.
  • the weft thread tensioning device 10 further comprises a weft thread deflection element 28 provided by a deflection lever 30 fixed to a deflection shaft 32.
  • the deflection lever 32 can carry out a swiveling movement about a swivel axis A extending parallel to the weft thread path P, at least in a situation in which this path extends through the centers of the weft thread passage openings 20, 22. If the weft thread is slightly inclined with respect to such an centered weft thread path, the swivel axis A may be slightly inclined with respect to the weft thread path what, in association with the present invention, still is considered as being a substantial parallel extension.
  • the deflection lever 30 has such an extension length starting out from the swivel axis A that the deflection lever 30 extends beyond the weft thread path P and the weft thread passage openings 20, 22. Therefore, irrespective of the swiveling position of the deflection lever 30, a deflection interaction of the deflection lever 30 with a weft thread extending along the weft thread path P is provided, after the deflection lever 30 has been moved across the weft thread path P and has come into contact with the weft thread extending through the weft thread passage openings 20, 22.
  • the deflection lever 30 provides a deflection portion 31 with which the deflection lever 30 comes into contact with a weft thread to be deflected. Therefore, there is one single point of interaction of the weft thread with the deflection lever 30 at this deflection portion 31.
  • the weft thread will become curved at three locations. One of these locations is provided at the deflection portion 31. The other two locations where the weft thread will become curved are provided at the two weft thread passage elements 24, 26. Due to having only three locations where the weft thread becomes curved upon deflecting the same, the friction between the weft thread and the weft thread tensioning device 10 is kept at a low level.
  • the deflection shaft 32 is fixed to a rotor shaft 33 or is provided by the rotor shaft 33 of a deflection element drive 34.
  • the deflection element drive 34 comprises a rotary electric motor 36 that, preferably, is a servomotor.
  • a controller 38 is provided for controlling the operation of the deflection element drive 34 and the rotary electric motor 36, respectively.
  • the controller 38 may comprise one or a plurality of microcontrollers and a control program stored in a data storage thereof and, therefore, is arranged for outputting control signals to the rotary electric motor 36.
  • the controller can permanently provide information about the positioning of the rotor shaft 33 and, therefore, about the positioning of the deflection lever 30. Abutments may be associated with the deflection lever 30 for defining swiveling movement end positions and, thereby, avoiding an excess swiveling movement thereof.
  • the controller 38 and the deflection element drive 34 can be connected to the data system and the power supply system of a weaving machine for providing the controller with data representing information about the operation of the weaving machine and for providing the necessary electric power for operating the controller 38 and the deflection element drive 34.
  • the weft thread tensioning device 10 can be operated in a manner adapted to the operation of the weaving machine.
  • weft thread tensioning device 10 in association with each weft thread one such weft thread tensioning device 10 may be provided, such that each weft thread can be tensioned and recuperated by the one weft thread tensioning device 10 associated therewith.
  • a rapier arrangement comprising at least one double rapier weft insertion means having an inserting rapier and a receiving rapier may be provided on the weaving machine such that, during each weft insertion cycle, a weft thread can be introduced by means of each double rapier weft insertion means.
  • a weft thread tensioning device for example, the weft thread tensioning device 10 shown in Figs. 1 and 2 may be arranged such as to be operated in at least two different deflection operating modes.
  • the deflection element drive 34 is controlled such as to move the deflection lever 30 to a predetermined deflection position.
  • Such a deflection operation may start with the deflection lever 30 being positioned in a starting position in which the deflection lever 30 is not in contact with a weft thread extending substantially uncurved along the substantially straight weft thread path P between the two weft thread passage elements 24, 26. This starting position may be defined by one of the abutments associated with the deflection lever 30.
  • This predetermined deflection position may be defined by a swivel angle of the deflection lever 30 relative to the starting position thereof. Due to the fact that the deflection element drive permanently provides information about the positioning of the rotor shaft 33 thereof, a position feedback control can be carried out for moving the deflection lever 30 to the desired predetermined deflection position.
  • the predetermined deflection position may be kept constant during an entire weaving process.
  • the predetermined deflection position may be varied during a weaving process. For example, depending on the sheds to be formed between the warp threads, a different pretensioning of the weft yarns to be inserted into such sheds may be advantageous. Therefore, the predetermined deflection position may be different in two consecutive weft insertion cycles.
  • a plurality of such deflection operations for moving the deflection lever 30 to the predetermined deflection position may be carried out during a weft insertion cycle. For example, it may be necessary to apply a tensioning load to a weft thread in a phase in which an inserting rapier picks up a weft yarn and in a phase in which the weft yarn is transferred from the inserting rapier to the receiving rapier. Therefore, two such deflection operations during which the deflection lever 30 is moved into the predetermined deflection position may be carried out during a weft insertion cycle.
  • the deflection lever 30 may be swiveled about the swivel axis with an increased swiveling angle as compared to a case in which a lower tensioning load is required.
  • Such a first deflection operating mode may be is used, if the weaving machine is operated with a rather high speed of operation requiring, for example, more than twenty weft insertion cycles per minute. If a weaving machine is operating with a lower speed of operation, for example, requiring not more than twenty weft insertion cycles per minute, a second deflection operating mode may be selected in which a weft thread tensioning device may be operated such as to simulate the characteristic of a spring having a spring constant and providing a spring force increasing with an increasing spring load.
  • the deflection lever 30 may be swiveled starting from the starting position such as to move across the weft thread path P and to thereby deflect the weft thread out of the straight weft thread path P.
  • the deflection lever 30 may be swiveled by applying a predetermined deflection drive force and a predetermined deflection drive torque, respectively, thereto, such that finally the deflection lever 30 will come into a deflection position in which the weft thread is held such as to be deflected out of the straight weft thread path P.
  • the counter force applied to the deflection lever 30 by the deflected weft thread varies, as the speed or extent of the movement of the weft thread varies.
  • a varying counter force leads to a corresponding swiveling movement of the deflection lever 30, if no position control is carried out.
  • This counter force induced swiveling movement will be detected within the deflection element drive 34, and the controller 38 will output a control signal such as to move the deflection lever 30 for partially, but not completely compensating this counter force induced swiveling movement, what also would happen, if the force acting on the deflection lever 30 for moving the same towards the deflection position were provided by a spring.
  • a high tensioning load can be applied to a weft thread, if the tension of the weft thread is or becomes quite low, what can be the case in a situation in which the weft thread is decelerated during a weft insertion cycle. If the tension of the weft thread is rather high, what can be the case during an acceleration of the weft thread, the tensioning load applied by the deflection lever 30 decreases due to the back swiveling movement thereof induced by the higher counter force applied to the deflection lever by the weft thread.
  • this second deflection operating mode provides a more or less continuous compensation of a varying tension of a weft thread that, for example, is due to a varying speed of movement of the weft thread
  • this second deflection operating mode is preferably maintained during a plurality of consecutive weft insertion cycles, for example, during an entire phase in which a weaving machine is operated with a low speed of operation and, therefore, only a quite low number of weft insertion cycles per minute is required or the weft insertion cycles can be carried out with a reduced speed.
  • Fig. 3 shows another example of using these different kinds of deflection operating modes during a weaving process.
  • the horizontal axis indicates the time line of a weaving process in relation to a rotational positioning, for example, of a main shaft of a weaving machine.
  • a rotational positioning for example, of a main shaft of a weaving machine.
  • One full rotation of this main shaft corresponds to one weaving cycle and one weft insertion cycle, respectively. Therefore, in Fig. 3 a first weaving cycle or weft insertion cycle starts at 0° and ends at 360°, while a second weaving cycle or weft insertion cycle started at 360° ends at 720°.
  • Each such a weaving cycle is terminated with the beat up of the weft thread/s introduced into the shed during this weaving cycle.
  • the curve shown in Fig. 3 represents the positioning of the deflection lever 30 associated with a particular weft thread.
  • the position S corresponds to the starting position of the deflection lever 30 in which there is no contact between the deflection lever 30 and the weft thread extending through the weft thread tensioning device having this deflection lever 30.
  • this weft thread is selected for the insertion into the shed formed between the warp threads in this weaving cycle.
  • the inserting rapier picks up the weft thread and starts moving the same towards the receiving rapier.
  • this weft thread is not moved by the inserting rapier before the pick up, the weft thread is not at a stand still, as it will be cut by the weft scissor and will be moved for being presented to the inserting rapier.
  • a deflection operation using the first deflection operation mode is carried out.
  • the deflection lever 30 reaches the predetermined deflection position D at T 1 . This means that the maximum deflection will be obtained before the inserting rapier picks up the weft thread.
  • the deflection operation is terminated and the deflection lever 30 returns to its starting position and, therefore, is not active for additionally tensioning the weft thread during the insertion process.
  • one single deflection operation using the first deflection operation mode is carried out during a weft insertion cycle in which this particular weft thread is inserted into a shed.
  • this weft thread is not selected and, therefore, basically is kept at a standstill. It is to be noted that, due to the fact that this weft thread is not used in this weft in insertion cycle, the thread is not cut. For keeping the weft thread under tension, the weft thread tensioning device 10 is operated in the second deflection operating mode.
  • the swiveling angle of the deflection lever 30 is slightly increased at T 4 , what is due to the fact that, during this phase, the weft thread is moved by means of a weft presentation device such as to be positioned on the path of the weft scissor for cutting this weft thread that will be used for the insertion into a shed in the next weft insertion cycle. Thereby, the weft thread is kept tensioned during this phase.
  • the next weft insertion cycle will be started with using this weft thread as a selected weft thread, as was the case in the first weft insertion cycle.
  • the deflection lever 13 still is in a position in which the weft thread is deflected by this deflection lever 30.
  • the deflection lever 30 is not in its starting position when being moved towards the predetermined deflection position during the next deflection operation, but is in an intermediate position I, in which the deflection lever 30 is in deflection interaction with the weft thread, but is not in its predetermined deflection position associated with the deflection operation of the first deflection operating mode.
  • This intermediate position I corresponds to the deflection position that the deflection lever 30 has at the end of the second weft insertion cycle.
  • the second deflection operation mode is maintained during the entire second weft insertion cycle. If this weft thread will not be selected in the third weft insertion cycle, the second deflection operation mode can continue and can be maintained over a plurality of weft insertion cycles in which this particular weft thread is not selected.
  • the selection of the two deflection operation modes depends on whether a weft thread is selected for the insertion into a shed or not and, therefore, depends on whether a weft thread is moved with a rather high speed during the insertion phase or is kept at a standstill due to not being picked up by a rapier.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
EP19180425.1A 2019-06-17 2019-06-17 Schussfadenspannungsvorrichtung und verfahren zum betrieb der schussfadenspannungsvorrichtung Withdrawn EP3754069A1 (de)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP19180425.1A EP3754069A1 (de) 2019-06-17 2019-06-17 Schussfadenspannungsvorrichtung und verfahren zum betrieb der schussfadenspannungsvorrichtung
US17/619,357 US20220298680A1 (en) 2019-06-17 2020-05-29 Weft thread tensioning device and method of operating a weft thread tensioning device
CN202080039345.1A CN113924390B (zh) 2019-06-17 2020-05-29 纬纱张紧设备和操作纬纱张紧设备的方法
EP20728501.6A EP3983585A1 (de) 2019-06-17 2020-05-29 Schussfadenspannungsvorrichtung und verfahren zum betrieb der schussfadenspannungsvorrichtung
PCT/EP2020/064951 WO2020254091A1 (en) 2019-06-17 2020-05-29 Weft thread tensioning device and method of operating a weft thread tensioning device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19180425.1A EP3754069A1 (de) 2019-06-17 2019-06-17 Schussfadenspannungsvorrichtung und verfahren zum betrieb der schussfadenspannungsvorrichtung

Publications (1)

Publication Number Publication Date
EP3754069A1 true EP3754069A1 (de) 2020-12-23

Family

ID=66912614

Family Applications (2)

Application Number Title Priority Date Filing Date
EP19180425.1A Withdrawn EP3754069A1 (de) 2019-06-17 2019-06-17 Schussfadenspannungsvorrichtung und verfahren zum betrieb der schussfadenspannungsvorrichtung
EP20728501.6A Pending EP3983585A1 (de) 2019-06-17 2020-05-29 Schussfadenspannungsvorrichtung und verfahren zum betrieb der schussfadenspannungsvorrichtung

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP20728501.6A Pending EP3983585A1 (de) 2019-06-17 2020-05-29 Schussfadenspannungsvorrichtung und verfahren zum betrieb der schussfadenspannungsvorrichtung

Country Status (4)

Country Link
US (1) US20220298680A1 (de)
EP (2) EP3754069A1 (de)
CN (1) CN113924390B (de)
WO (1) WO2020254091A1 (de)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0467059A1 (de) 1990-06-11 1992-01-22 NUOVA VAMATEX S.p.A. Vorrichtung zur Spannungsregulierung und Rückziehen von Schussgarn in Webmaschinen
JPH06184867A (ja) * 1992-12-09 1994-07-05 Tsudakoma Corp 織機の緯糸制御装置
EP0851833A1 (de) * 1995-09-20 1998-07-08 Iro Ab Vorrichtung und verfahren zum steuern der garnspannung
EP0902109A1 (de) 1997-09-11 1999-03-17 Lindauer Dornier Gesellschaft M.B.H Steuerbare Schussfadenzubringer- und -klemmvorrichtung und Vorrichtungsanordnung zum Minimieren des Schussfadenabfalles bei der Gewebeherstellung auf Webmaschinen, insbesondere auf Greiferwebmaschinen
US6135377A (en) * 1996-06-27 2000-10-24 Nouva Roj Electrotex S.R.L. Yarn brake for looms
EP1233090A1 (de) * 2001-02-16 2002-08-21 Te Strake B.V. Verfahren zur Überwachung des Betriebes einer Eintragsbremse
EP1783255A1 (de) 2005-11-04 2007-05-09 L.G.L. Electronics S.p.A. Fadenrückzugs- und Fadenbremsvorrichtung für Webmaschinen
EP2128318A1 (de) * 2008-05-30 2009-12-02 Iro Ab Aufnahmevorrichtung

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT226136Y1 (it) * 1991-09-19 1997-04-18 Roy Electrotex Spa Miglioramenti costruttivi per porgitrama per telai di tessitura.
DE10210911A1 (de) * 2002-03-04 2003-09-18 Picanol Nv Vorrichtung zum Erfassen und/oder Einstellen einer Zugkraft in einem Faden

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0467059A1 (de) 1990-06-11 1992-01-22 NUOVA VAMATEX S.p.A. Vorrichtung zur Spannungsregulierung und Rückziehen von Schussgarn in Webmaschinen
JPH06184867A (ja) * 1992-12-09 1994-07-05 Tsudakoma Corp 織機の緯糸制御装置
EP0851833A1 (de) * 1995-09-20 1998-07-08 Iro Ab Vorrichtung und verfahren zum steuern der garnspannung
US6135377A (en) * 1996-06-27 2000-10-24 Nouva Roj Electrotex S.R.L. Yarn brake for looms
EP0902109A1 (de) 1997-09-11 1999-03-17 Lindauer Dornier Gesellschaft M.B.H Steuerbare Schussfadenzubringer- und -klemmvorrichtung und Vorrichtungsanordnung zum Minimieren des Schussfadenabfalles bei der Gewebeherstellung auf Webmaschinen, insbesondere auf Greiferwebmaschinen
EP1233090A1 (de) * 2001-02-16 2002-08-21 Te Strake B.V. Verfahren zur Überwachung des Betriebes einer Eintragsbremse
EP1783255A1 (de) 2005-11-04 2007-05-09 L.G.L. Electronics S.p.A. Fadenrückzugs- und Fadenbremsvorrichtung für Webmaschinen
EP2128318A1 (de) * 2008-05-30 2009-12-02 Iro Ab Aufnahmevorrichtung

Also Published As

Publication number Publication date
CN113924390A (zh) 2022-01-11
WO2020254091A1 (en) 2020-12-24
US20220298680A1 (en) 2022-09-22
EP3983585A1 (de) 2022-04-20
CN113924390B (zh) 2023-10-03

Similar Documents

Publication Publication Date Title
KR100302035B1 (ko) 탄성사를위한사공급장치및사용방법과,그를이용한편물제품
EP0290039B1 (de) Verfahren und Vorrichtung zum Kontrollieren der Spannung des Florkettenfadens
US5797433A (en) Weaving apparatus with motor controlled weft insertion
US20090120526A1 (en) Selvedge Tucker for Weft Threads
EP0461524B1 (de) Schussfadenzubringvorrichtung für Greiferwebmaschinen
US5154209A (en) Positive feed picking device for a fluid jet loom
US20220298680A1 (en) Weft thread tensioning device and method of operating a weft thread tensioning device
EP0514959B1 (de) Verfahren und Vorrichtung zum Antrieb einer Webmaschine im Langsamlauf
EP2128318A1 (de) Aufnahmevorrichtung
EP0229913B1 (de) Schussfadenzubringer für Webmaschinen
US6223779B1 (en) Auxiliary selvage forming and weft thread cutting device
EP0785301B2 (de) Verfahren und Vorrichtung zum Positionieren von Polfaden in einen Greifer-Axminster Teppichwebmaschine
EP1424415B2 (de) Webmaschine mit moduliertem Antrieb und Verfahren zur Webkontrolle mit Veränderung der Antriebsgeschwindigkeit
EP1987182B1 (de) Verfahren zur ansteuerung von litzenrahmen und webmaschine
EP1498524B1 (de) Elektrisch gesteuerte Vorrichtung zum programmierbar Schneiden von Schussfäden in Webmaschinen
US6305435B1 (en) Weaving machine with an insertion system for a plurality of generally different weft threads
US20040154686A1 (en) Method and device for opening a gripper clip of a mechanical-loom gripper
CN210215721U (zh) 一种纬纱分离装置
JP3713842B2 (ja) 織機における開口制御方法及び装置
EP1020551B1 (de) Webmaschine mit einem durch zwei Aktuatoren angetriebenen Kettbaum
JP2001115363A (ja) 織機の糸供給装置操作方法
JP2596782B2 (ja) 織機の起動方法
WO1994002672A1 (en) A device for feeding a periodically operating yarn-consuming device
JP2630633B2 (ja) 流体噴射式織機のよこ入れ装置
JP6113912B2 (ja) 追加の緯糸エフェクトを有する織機で緯糸端部を挿入する方法

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

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

Free format text: STATUS: THE APPLICATION HAS BEEN PUBLISHED

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

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: 20210624