EP0763613A2 - Dispositif pour sélectionner et présenter des fils de trame pour un métier à tisser - Google Patents

Dispositif pour sélectionner et présenter des fils de trame pour un métier à tisser Download PDF

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Publication number
EP0763613A2
EP0763613A2 EP96119033A EP96119033A EP0763613A2 EP 0763613 A2 EP0763613 A2 EP 0763613A2 EP 96119033 A EP96119033 A EP 96119033A EP 96119033 A EP96119033 A EP 96119033A EP 0763613 A2 EP0763613 A2 EP 0763613A2
Authority
EP
European Patent Office
Prior art keywords
thread
feeder
weft
control unit
drive motor
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
EP96119033A
Other languages
German (de)
English (en)
Other versions
EP0763613B1 (fr
EP0763613A3 (fr
Inventor
Geert Geerardyn
Bernard Vancayzeele
Dirk Lewyllie
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.)
Picanol NV
Original Assignee
Picanol 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 Picanol NV filed Critical Picanol NV
Publication of EP0763613A2 publication Critical patent/EP0763613A2/fr
Publication of EP0763613A3 publication Critical patent/EP0763613A3/fr
Application granted granted Critical
Publication of EP0763613B1 publication Critical patent/EP0763613B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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

  • Device for selecting and delivering weft threads to an insertion member for a weaving machine with at least one feeder associated with a weft thread, which can be moved between a rest position and a delivery position by means of its own drive motor connected to a control unit.
  • the feeders are transferred to the infeed position when the thread they are carrying is to be inserted as a weft thread. They remain in this delivery position until the end of the weft insertion, after which they are returned to the rest position, in which they remain until the thread they are guiding is to be re-entered as a weft thread.
  • the invention has for its object to reduce the stress on weft threads in a weft insertion.
  • control unit contains means for transferring the feeder from the infeed position to at least one intermediate position between the infeed position and the rest position during the insertion of a weft thread guided by it.
  • the invention is based on the knowledge that the stress on a weft thread during the weft insertion can be reduced if the deflection of the weft thread in the area of the thread guide of the thread feeder is small. This reduces the friction in the area of the thread guide, so that the risk of weft breakage is reduced.
  • the at least one intermediate position is therefore chosen so that the weft thread is deflected as little as possible during the entry in the area of the feeder in question.
  • a single module (1) of a device for selecting and delivering weft threads is shown, which consist of a plurality of similar modules (1).
  • Each module (1) contains a thread feeder (3), the end of which is provided with an eye (21) in which a weft thread (30) is guided.
  • Each module (1) contains a drive motor (4) for the thread feeder (3).
  • the drive motor (4) is connected directly via an eccentric drive (6) to the thread guide (3) designed as a round rod or needle (11).
  • a crank (9) parallel to the thread feeder (3) is arranged in a rotationally fixed manner.
  • the crank (9) is provided with a crank pin (10) on which the end of the thread feeder (3) opposite the eye (21) is mounted.
  • the rod or needle (11) of the thread feeder (3) is guided in a guide (12) which has a longitudinal bore (13). This guide (12) is arranged as close as possible to the end of the thread feeder (3) which has the eye (21) and can be rotated about an axis (14) parallel to the shaft (5).
  • Each module (1) has as a supporting structure a plate (16), on the back of which the drive motor by means of only indicated Screws (22) is attached.
  • the plate (16) is provided with a recess (17) in the area of the eccentric drive (6).
  • the thread feeder (3) and its guide (12) are located on the side of the plate (16) opposite the drive motor (4).
  • the guide (12) is inserted with its axis (14) through the plate (16) and secured on the opposite side with a securing element, for example a clip (23).
  • the plate (16) has a trapezoidal base, tapering from the area of the drive motor (4) to the area of the guide (12).
  • the masses of the parts to be moved by the drive motor (4), namely the crank (9) and the thread feeder (3) and the guide (12) are relatively small, so that correspondingly low inertia forces for the adjustment of the thread feeder (3) have to be overcome are. This enables higher working speeds and / or the use of relatively low-power drive motors (4).
  • stops (25, 26) consist of projections (25, 26) of the recess (17) which limit the maximum angle of rotation of the crank (9) and thus also of the shaft (5) of the drive motor (4).
  • the projections (25, 26) are arranged such that in the rest position (Fig. 1) and in the infeed position (Fig. 3) the crank (9) and the rod or needle (11) of the thread feeder (3) are aligned with one another, ie the shaft (5) and the crank pin (10) run in a plane through the axis of the rod or needle (11).
  • adjustable stops are provided, for example in the form of set screws, which are attached to the plate (16) and which limit the angle of rotation of the crank (9).
  • the drive motors (4) of the individual modules (1) are connected to an electronic control unit (20) which determines when and how, i.e. at what speed the thread feeders (3) are moved from the rest position (FIG. 1) to the infeed position (FIG. 3) and possibly also to an intermediate position (FIG. 4).
  • the control unit (20) can bring the thread feeder (3) into the desired position at any time and regardless of the position of other weaving machine parts, such as the comb drawer drive, the shaft drive or other drives. This makes it possible to choose the movement of the thread feeder (3), for example depending on the type of weft thread, or to cancel a weft thread entry or to bring the thread feeder (3) into any position during a stop or during a weaving machine standstill.
  • the drive motors (4) are designed as stepper motors, to which the control unit (20) supplies a pulse sequence or number of pulses suitable for the desired movement.
  • This pulse sequence can be selected so that the crank (9) is pressed against the stop (25) in the rest position and against the stop (26) in the infeed position, so that two stable positions for the thread feeder (3) are obtained.
  • the pulse sequence is designed so that the crank (9) does not abut the stop (25 or 26) in the respective end positions. This is possible due to the number of steps with which the drive motor is rotated.
  • the thread feeder (3) can be held in an adjustable rest position or infeed position by applying a so-called holding current to the drive motor (4).
  • This holding current is chosen in such a way that the positioning of the thread feeder (3) is not influenced by vibrations of the weaving machine or by the forces of the weft thread exerted on it.
  • the crank (9) and the rod or needle (11) of the thread feeder (3) in the rest position and / or in the feed position are at least approximately aligned with one another, the forces exerted by a weft thread (30) on the thread feeder (3) are practically not transmitted to the crank (9), so that only a relatively low holding current is required.
  • the eccentric drive (6) always starts moving from the rest position, i.e. in the direction of arrow (P1) of Fig. 1, as well as from the infeed movement, i.e. Direction of arrow (Q) in Fig. 3, only a relatively small movement component in the longitudinal direction of the thread feeder (3), results in a relatively smooth start of the movement of the feeder (3), so that the weft thread (30) is spared and the danger is reduced by weft breaks.
  • the control unit (20) outputs the pulse sequence to the drive motor (4) at a variable frequency, so that a slow start of the drive motor (4) is obtained in each case.
  • the thread feeder (3) If the thread feeder (3) is in its rest position, it can be provided after a certain time or for example after a certain number of stops of the sley that the crank (9) is brought into contact with the stop (25) so that a reference position of the motor shaft (5) is determined for the control unit (20).
  • a reference position can also be obtained with the aid of a detector, for example with the aid of a proximity switch.
  • the shaft (5) of the drive motor (4) is provided with an angle detector which is connected to the control unit (20).
  • the control unit (20) can then drive the controllable drive motor (4), which in this case need not be a stepper motor, until it has reached the predetermined angular position.
  • the drive motor (4) can be supplied with a current of variable frequency by the control unit (20).
  • the thread feeder (3) deflects a weft thread (30) extending between a stationary thread guide, for example a stationary eye (33), and a shed (34) in such a way that it is outside the range of movement of an insertion element (31), in particular a gripper (32), as is shown schematically in FIG. 1.
  • the thread feeder (3) is adjusted in such a way that the weft thread (30) then runs in an area in which it is gripped by the insertion element (31), for example the gripper (32).
  • the thread feeder (3) can be returned to its rest position.
  • FIG. 1 In one embodiment of the invention, which is shown in FIG.
  • the thread feeder (3) is brought into an intermediate position during the weft insertion, in which the weft thread (30) in the area of the eye (21) of the thread feeder ( 3) is deflected as little as possible. This reduces the friction in the area of the thread eye (21), so that the risk of weft breakage is reduced. It can also be provided that the thread feeder (3) is shifted with a constant movement so that the friction in the thread eye (21) is as low as possible, whereby the thread feeder (3) can change its position for this purpose. This constant adjustment can also be achieved by appropriate design of the control unit (20). Moving to the intermediate position also has an advantage if the same weft thread is to be re-inserted during the subsequent weft insertion. In this case, the thread feeder (3) only has to travel a short distance to its delivery position.
  • each module (1) is assigned a switch (48) which is connected to the control unit (20).
  • the control unit (20) is given a signal, on the basis of which the control unit (20) brings the associated thread feeder (3) into the threading position by correspondingly turning the drive motor (4).
  • the control unit (20) supplies a corresponding holding current to the drive motor (4) for this threading position, if this is a stepper motor.
  • a device for selecting and delivering weft threads consists of a large number of modules, as shown in FIGS. 5 to 7.
  • modules (1A to 1E) are designed in accordance with the previously described embodiment, ie it has a drive motor (4A to 4E) and an eccentric drive for a thread feeder (3A to 3E), each in a guide (12A to 12E) a rod or needle (11A to 11E) is guided.
  • These elements are arranged on plates (16A to 16E), as was explained with reference to FIGS. 1 to 4.
  • the thread feeders (3A to 3E) lie in a common plane.
  • the modules (1A to 1E) are arranged in two rows (40, 41) mirror-inverted to one another and offset with respect to the common plane of the thread feeders (3A to 3E).
  • the common plane can be flat or also spatially curved (arched).
  • Their plates (16A to 16E) are arranged between two holding plates (42, 43), to which they are attached with screws (46). These plates (42, 43) are connected to one another by transverse webs (44) (FIG. 6).
  • the plate (43) is held on the machine frame (45) by means of screws (47).
  • the thread feeders (3A to 3E) describe an arcuate movement (27) between their rest position and their infeed position, as is shown in FIG. 7.
  • the arcuate movements (27) of all thread feeders (3A to 3E) run parallel to one another.
  • the direction of rotation of the drive motors (4C, 4E) arranged on one side is opposite to the direction of rotation of the drive motors (4A, 4B, 4D) arranged on the other side.
  • the cutouts (17A, 17B, 17D) are also mirror-symmetrical to the opposite cutouts (17C and 17E).
  • the same plates (16) can of course be used, only the arrangement of the drive motors (4) and the longitudinal guides (12) on the base surfaces of the plates (16) being exchanged.
  • the individual modules (1A to 1C) attached to the plates (42, 43) can be attached to the plates (42, 43) individually in different positions relative to one another. It is also possible to align the plates (42, 43) with respect to the machine frame (45) and to fasten them to the machine frame (45) in a common aligned position. Since the device consists of a large number of individual modules, it is possible to enlarge or reduce the device quickly and easily by additional or fewer modules (1) according to the application. In addition, a single module can be easily replaced as a whole in the event of a defect. Since the drive motors (4) are also on the outside in the opposite arrangement (FIG. 5) are arranged, they are easily accessible and therefore also easily replaceable in the event of a defect.
  • the thread feeders (3A to 3E) are in the feed position in adjacent positions. It is of course possible to align the individual modules in such a way that all thread feeders (3A to 3E) assume an infeed position that is essentially on the same axis or even at the same point.
  • a suitable control of the drive motors (4) also has the advantage that the rest position of the thread feeder (3) can be changed without mechanical adjustments having to be made.
  • a corresponding setting can be made via the control unit (20), which is provided with an input unit, for example.
  • the thread feeders (3) are provided with thread eyes (21). In another embodiment it is provided that the thread feeders (3) are provided with thread clamps, as is also known from the prior art.
  • the guides (12) of the thread feeder (3) are held with rubber-elastic bearings, so that the axis (14) is omitted.
  • the thread feeders (3) are elastically supported in the transverse direction.
  • the thread feeder (3) it is possible to move the thread feeder (3) in a straight line movement between the rest position and the infeed position if it is provided by other means that the transverse movement of the eccentric drive with respect to the reciprocating movement of the thread feeder (3) is compensated for .
  • This can happen, for example, in that the thread feeder (3) consists of two parts which are connected to one another via a joint which has an axis of rotation parallel to the motor shaft (5).

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
EP96119033A 1992-11-16 1993-10-29 Dispositif pour sélectionner et présenter des fils de trame pour un métier à tisser Expired - Lifetime EP0763613B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
BE9200987A BE1006347A3 (nl) 1992-11-16 1992-11-16 Inrichting voor het presenteren van inslagdraden bij weefmachines.
BE9200987 1992-11-16
EP93117545A EP0598264B1 (fr) 1992-11-16 1993-10-29 Dispositif pour sélectionner et présenter des fils de trame pour un métier à tisser

Related Parent Applications (2)

Application Number Title Priority Date Filing Date
EP93117545A Division EP0598264B1 (fr) 1992-11-16 1993-10-29 Dispositif pour sélectionner et présenter des fils de trame pour un métier à tisser
EP93117545.9 Division 1993-10-29

Publications (3)

Publication Number Publication Date
EP0763613A2 true EP0763613A2 (fr) 1997-03-19
EP0763613A3 EP0763613A3 (fr) 1997-10-01
EP0763613B1 EP0763613B1 (fr) 2000-05-24

Family

ID=3886516

Family Applications (2)

Application Number Title Priority Date Filing Date
EP96119033A Expired - Lifetime EP0763613B1 (fr) 1992-11-16 1993-10-29 Dispositif pour sélectionner et présenter des fils de trame pour un métier à tisser
EP93117545A Expired - Lifetime EP0598264B1 (fr) 1992-11-16 1993-10-29 Dispositif pour sélectionner et présenter des fils de trame pour un métier à tisser

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP93117545A Expired - Lifetime EP0598264B1 (fr) 1992-11-16 1993-10-29 Dispositif pour sélectionner et présenter des fils de trame pour un métier à tisser

Country Status (6)

Country Link
US (1) US5400834A (fr)
EP (2) EP0763613B1 (fr)
JP (2) JP3560994B2 (fr)
CN (2) CN1034597C (fr)
BE (1) BE1006347A3 (fr)
DE (2) DE59307739D1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0896075A3 (fr) * 1997-08-07 1999-06-16 NUOVA VAMATEX S.p.A. Dispositif de présentation de fil de trame pour métiers à tisser
FR2800754A1 (fr) * 1999-11-08 2001-05-11 Joint Industrial Processors For Electronics Dispositif evaporateur d'une installation de depot chimique en phase vapeur
EP1500731A1 (fr) * 2003-07-10 2005-01-26 Promatech S.p.A. Dispositif de présentation de fil de trame pour métiers à tisser avec une seule barre de présentation
DE102006034262A1 (de) * 2006-07-18 2008-01-24 Picanol N.V. Vorrichtung zum Zustellen von Schussfäden für eine Webmaschine

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5623840A (en) * 1992-07-08 1997-04-29 Tecnit-Technische Textilien Und Systeme Gmbh Process for production of weave-knit material
DE4325905C1 (de) 1993-08-02 1994-10-06 Dornier Gmbh Lindauer Vorrichtung zum Zuführen von Schußfäden zu einem Schußfadeneintragorgan in Webmaschinen
US6041831A (en) * 1995-09-13 2000-03-28 Textilma Ag Device for selective pick-up and controlled oscillation of a yarn
BE1010334A3 (nl) * 1996-06-07 1998-06-02 Picanol Nv Inrichting voor het inbrengen van een inslagdraad bij een grijperweefmachine.
DE59705563D1 (de) * 1996-06-07 2002-01-10 Picanol Nv Gebergreifer für eine greiferwebmaschine
IT1293506B1 (it) * 1997-07-30 1999-03-01 Nuovo Pignone Spa Dispositivo modulare per la presentazione dei fili di trama nei telai tessili senza navetta
GB9901358D0 (en) * 1999-01-22 1999-03-10 Griffith Textile Mach Ltd A tuft yarn selection mechanism
EP1024214B1 (fr) * 1999-01-28 2006-05-17 Sultex AG Dispositif et système pour positioner un fil de trame dans un métier à tisser à griffes
JP2000220060A (ja) 1999-01-28 2000-08-08 Sulzer Textil Ag レピア織機の緯糸供給装置及び配列構造
IT1308488B1 (it) * 1999-05-14 2001-12-17 Lgl Electronics Spa Metodo e dispositivo di controllo di motori elettrici tipo brushlessalimentati in corrente continua, particolarmente per la
DE50308119D1 (de) * 2003-07-10 2007-10-18 Staeubli Gmbh Schussfaden-Wechselvorrichtung für eine Webmaschine
DE10349645A1 (de) * 2003-10-21 2005-06-02 Picanol N.V. Verfahren zum Auswählen und Zustellen von Schussfäden und Greiferwebmaschine mit einer Vorrichtung zum Auswählen und Zustellen von Schussfäden
CN101935909A (zh) * 2010-09-07 2011-01-05 上海超诚电子科技有限公司 选纬器及选纬装置
BE1019807A3 (nl) 2011-07-12 2012-12-04 Picanol Inrichting en werkwijze voor het klemmen van een inslagdraad.
BE1021341B1 (nl) * 2012-09-06 2015-11-05 Picanol Naamloze Vennootschap Apparaat voor het presenteren van inslagdraden aan een inbrenginrichting van een weefmachine
ITUB20160421A1 (it) * 2016-02-01 2016-05-01 Rinaldo Sperotto PRESENTATRICE ROTATIVA per macchine da tessere a preselezione meccanica e comando elettronico
BE1024401B1 (nl) 2016-07-04 2018-02-13 Picanol N.V. Naamloze Vennootschap Inrichting voor het klemmen van inslagdraden
CN107503028B (zh) * 2017-08-09 2020-01-24 江苏大学 一种球网机中送纬自动调节装置
CN109868543A (zh) * 2019-03-19 2019-06-11 江西中博智能装备制造有限公司 一种梭织织造扁平布的纬纱机构
EP4310233B1 (fr) 2022-07-19 2024-12-11 Picanol Dispositif pour la sélection et la présentation de fils de trame

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0362089A1 (fr) 1988-09-27 1990-04-04 Pétrus Marsande Dispositif d'alimentation des fils de trame pour métiers à tisser sans navette
EP0461524A1 (fr) 1990-06-11 1991-12-18 NUOVA VAMATEX S.p.A. Dispositif de présentation de fil de trame pour métiers à griffer
EP0478986A1 (fr) 1990-10-05 1992-04-08 Lindauer Dornier Gesellschaft M.B.H Dispositif de sélection et d'alimentation de fil de trame pour métiers à tisser

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US875608A (en) * 1903-03-06 1907-12-31 William N Parkes Take-up and needle-bar mechanism for sewing-machines.
GB2002039B (en) * 1977-08-05 1982-01-27 Pickering Ltd E Tufting machines
US4326566A (en) * 1979-09-11 1982-04-27 N. V. Weefautomaten Picanol Color selector
DE2940202A1 (de) * 1979-10-04 1981-04-16 Institute für Textil- und Faserforschung Stuttgart, 7410 Reutlingen Webmaschine
NL8600858A (nl) * 1986-04-03 1987-11-02 Picanol Nv Aandrijf- en stuurmechanisme voor het klemmen, presenteren en vasthouden van inslagdraden bij grijperweefmachines.
BE1002081A3 (nl) * 1988-06-17 1990-06-19 Picanol Nv Inrichting voor het presenteren van inslagdraden bij weefmachines.
DE3827265A1 (de) * 1988-08-11 1990-02-15 Mayer Fa Karl Verfahren und kettenwirkmaschine zur herstellung von polware
JPH03161555A (ja) * 1989-11-20 1991-07-11 Toyota Autom Loom Works Ltd 織機における経糸通し検出装置

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0362089A1 (fr) 1988-09-27 1990-04-04 Pétrus Marsande Dispositif d'alimentation des fils de trame pour métiers à tisser sans navette
EP0461524A1 (fr) 1990-06-11 1991-12-18 NUOVA VAMATEX S.p.A. Dispositif de présentation de fil de trame pour métiers à griffer
EP0478986A1 (fr) 1990-10-05 1992-04-08 Lindauer Dornier Gesellschaft M.B.H Dispositif de sélection et d'alimentation de fil de trame pour métiers à tisser

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0896075A3 (fr) * 1997-08-07 1999-06-16 NUOVA VAMATEX S.p.A. Dispositif de présentation de fil de trame pour métiers à tisser
FR2800754A1 (fr) * 1999-11-08 2001-05-11 Joint Industrial Processors For Electronics Dispositif evaporateur d'une installation de depot chimique en phase vapeur
US6521047B1 (en) 1999-11-08 2003-02-18 Joint Industrial Processors For Electronics Process and apparatus for liquid delivery into a chemical vapor deposition chamber
EP1500731A1 (fr) * 2003-07-10 2005-01-26 Promatech S.p.A. Dispositif de présentation de fil de trame pour métiers à tisser avec une seule barre de présentation
DE102006034262A1 (de) * 2006-07-18 2008-01-24 Picanol N.V. Vorrichtung zum Zustellen von Schussfäden für eine Webmaschine

Also Published As

Publication number Publication date
JPH06192944A (ja) 1994-07-12
JP3560994B2 (ja) 2004-09-02
HK1001594A1 (en) 1998-06-26
EP0598264B1 (fr) 1997-11-26
JP2004137665A (ja) 2004-05-13
HK1002075A1 (en) 1998-07-31
BE1006347A3 (nl) 1994-07-26
EP0598264A1 (fr) 1994-05-25
EP0763613B1 (fr) 2000-05-24
CN1034597C (zh) 1997-04-16
DE59307739D1 (de) 1998-01-08
CN1089916A (zh) 1994-07-27
CN1158368A (zh) 1997-09-03
JP3611844B2 (ja) 2005-01-19
CN1072286C (zh) 2001-10-03
EP0763613A3 (fr) 1997-10-01
US5400834A (en) 1995-03-28
DE59310049D1 (de) 2000-06-29

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