EP1680539A1 - Dispositif pour selectionner des fils de trame et les fournir a une pince de metier a tisser a pinces - Google Patents

Dispositif pour selectionner des fils de trame et les fournir a une pince de metier a tisser a pinces

Info

Publication number
EP1680539A1
EP1680539A1 EP04765800A EP04765800A EP1680539A1 EP 1680539 A1 EP1680539 A1 EP 1680539A1 EP 04765800 A EP04765800 A EP 04765800A EP 04765800 A EP04765800 A EP 04765800A EP 1680539 A1 EP1680539 A1 EP 1680539A1
Authority
EP
European Patent Office
Prior art keywords
thread
attached
edge
gripper
cutting device
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Withdrawn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
EP04765800A
Other languages
German (de)
English (en)
Inventor
Kristof Roelstraete
Philip Cornelissen
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 EP1680539A1 publication Critical patent/EP1680539A1/fr
Withdrawn legal-status Critical Current

Links

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 device for selecting and delivering weft threads to a gripper of a rapier weaving machine with thread feeders which can be moved by means of drives from a rest position into a working position in which they hold a weft thread in a receiving position for a gripper and with a stationary thread guide , which defines the take-up position together with a thread feeder.
  • the thread feeders and the thread guide are usually attached to suitable components of a weaving machine.
  • the thread feeders and the thread guide are adjustably attached to the weaving machine.
  • a rapier gripper picks up the weft threads between the fabric edge and the thread guide and moves together with the weft thread into a shed.
  • FR 1538375 It is also known (FR 1538375) to lower a loop of the weft thread that sags downward by lowering a thread feeder form, which is in the range of movement of a taker rapier, ie a rapier which is inserted into a shed from the side opposite the device for selecting and delivering weft threads, picks up the selected weft thread and pulls it through the shed.
  • the thread feeders are arranged in a row one behind the other, which runs parallel to the direction of movement of the hook.
  • the selection and adjustment of the weft thread to be inserted is carried out by means of a magnet which can be adjusted to the individual feeders by means of a cable drive acting against a return spring.
  • the holder for the thread feeder and the actuating magnet can be adjusted in a rail across the weaving machine to adapt to changed weaving widths.
  • the invention is based on the object of designing a device of the type mentioned at the beginning in such a way that adjustment work and in particular adaptation to changed weaving widths can be carried out easily.
  • the structural unit contains a cutting device for weft threads.
  • a cutting device for weft threads.
  • the provision of such a cutting device within the structural unit is particularly expedient when the weft threads to be inserted are ready be held that they extend from a fabric edge to a delivery device and thereby a thread guide, in particular an eyelet, pass through the thread feeder.
  • the weft thread must be separated from the section already woven into the fabric at the beginning of the weft insertion. An adaptation to the fabric width is therefore also required for the cutting device.
  • means for adjustable holding of the thread guide and / or means for adjustable holding of a holder of the cutting device or for adjustable holding of the cutting device contain safeguards against unauthorized adjustment.
  • the relative adjustment of the thread feeders to the thread guide and / or to the holder of the cutting device and / or to the cutting device is already carried out in the manufacturer's works to the final values.
  • the user of the weaving machine is restricted to only adjusting the structural unit as such to adapt to changed weaving widths.
  • FIG. 1 shows a view in the direction of a weft insertion on an inventive device for selecting and delivering weft threads
  • FIG. 2 is a plan view of the device according to the invention according to FIG. 1, 3-6 top views, similar to FIG. 2 of the embodiment according to FIGS. 1 and 2 during the takeover of a weft thread and the beginning of an insertion,
  • FIG. 7 is a view similar to FIG. 1 of a modified embodiment
  • FIG. 8 is a perspective view of the embodiment of FIG. 7,
  • Fig. 9 is a view similar to FIG. 1 on a further modified embodiment.
  • Fig. 10 eome top view of a device according to the invention, which contains a spreader and an edge insert.
  • a rapier belt 10 or a rapier bar is shown of the actual weaving machine, which carries at its end a rapier 11 designed as a slave rapier.
  • the weaving machine forms a weave 15 from warp threads 12, 13 and weft threads 14, which is only indicated schematically.
  • the weft threads 14 are struck against a fabric edge with a reed, not shown.
  • To insert a weft thread 14, the warp threads are moved apart by means of a shed forming means (not shown) to form an upper warp thread sheet 13 and a lower warp thread sheet 12, so that a shed is formed into which a weft thread 14 can be inserted.
  • the weft thread is inserted by means of the gripper 11, which is inserted into the shed from the side opposite the side on which the weft threads 14 are kept ready. When it moves out of the shed, the gripper 11 takes one, possibly also several, weft threads 14 with it.
  • the weft thread 14 to be inserted into a shed during a weft insertion is selected by means of a device 16 and delivered to the gripper 11.
  • the device 16 has a base body or a base plate 17, which is fastened by means of screws 39 on a profile rail 38 running in the direction of the weft insertion.
  • the base plate 17 with the elements attached to it can be moved on this profile rail 38 and fixed in a position adapted to the fabric width.
  • the entire device 16 can therefore be adapted to a changed fabric width in a very simple manner.
  • the device contains needle-shaped thread feeders 19, the drives 20 of which are attached to a holder 21 and which extend downward at an acute angle so that they can move downward essentially in the vertical direction.
  • the drives 20 of the thread feeders 19 can be designed, for example, as is known from EP 0598264 B1, so that the thread feeders 19 are adjusted between a rest position A (FIG. 1) and a working position B.
  • the thread feeders 19 are each provided at their lower ends with eyelets 22 through which a weft thread 14 runs in each case.
  • the weft threads 14 extend from a fabric edge of the fabric 15 through the eyelets 22 to a delivery device, for example a prewinder.
  • a bar 23 is attached to the base plate 17, on which a thread separation device 24 is arranged.
  • the thread separating device 24 has a knife disk 25 which is driven by an electric motor 26.
  • the knife disk 25 is assigned thread guides on both sides, which are formed by means of the bar 23 and guide tongues 28, 29.
  • a further strip 30 is attached, which has a deflecting edge by means of an upstanding leg 31 forms, which runs parallel to the direction of movement of the gripper 11, that is to say transversely to the direction of the warp threads 12, 13.
  • the deflection edge 31 lies in a plane with a binding point
  • the base plate 17 is adjustable in the rail 38 in the direction of the fabric width.
  • the receptacles for fastening screws 39 (FIG. 2) of the base plate 17 are slots directed transversely to the profile rail 38, so that an adjustment in the transverse direction is also possible.
  • the bar 23 with the cutting device 24 is fastened to the base plate 17 in an adjustable manner both transversely and in the longitudinal direction of the warp threads. Its position with respect to the distance to the deflection edge 31 in the transverse direction and also with respect to the distance to the end of the deflection edge 31 in its longitudinal direction can thus be adjusted.
  • the bar 23 with the cutting device 24 and the bar 30 with the deflection edge 31 are adjusted relative to one another and to the feeders in the manufacturing plant and that the bars 23, 30 are then fixed in this position that they cannot be changed or can only be changed with difficulty by the user.
  • This can be done, for example, by providing fastening screws with specially designed tool engagement surfaces.
  • the positions can also be sealed.
  • the user of a weaving machine can then only adjust the entire device 16 to a small extent in the direction of the weaving width and possibly also transversely to it.
  • the gripper 11 moving back into the shed takes the weft picked up in section 14a and pulls it over the deflection edge 31 in the direction of the shed.
  • the weft thread 14 arrives in the cutting device 24, in which the weft thread is separated from the portion remaining on the fabric edge before it is inserted into the shed.
  • the selection of the weft thread 14 to be entered is controlled by a control unit 36, which expediently belongs to the device 16 and is attached to it.
  • the control unit 36 receives its commands from the control of the weaving machine.
  • the control unit 36 also switches on the motor 26 of the knife disk 25. This can be done individually for each shot entry or as a continuous operation at high shot speeds.
  • the thread feeders 19, of which only four are shown, are arranged in a row one behind the other. This row runs parallel to the path of movement of the gripper 11 and the deflection edge 31. Since the feeders 19 each occupy the same working position B, the thread pieces 14a between the eyelets 22 and the deflection edge 31 all run at the same angle in the side view (FIG. 1) , even if the angle between the eyelets 22 and the fabric edge (Fig. 2) is different. With its hook-shaped element 34 and the clamp 35, the gripper 11 always grips the thread sections 14a in the same way.
  • the thread feeders 19 move downwards with a movement component, so that they lay the weft threads over the deflection edge 31. As can be seen in FIG. 1, this can be done by aligning the feeders 19 at an acute angle. Of course, it is also possible to arrange the feeders in such a way that they are aligned vertically and perform an exclusively vertical movement.
  • weft threads 14 are only separated from the fabric edge when they are re-entered in a shed.
  • the free ends are then taken up by a thread clamp.
  • Such a thread clamp which is arranged between the fabric edge and the cutting device 24, is then part of the device 16 in such an embodiment.
  • FIGS. 7 and 8 corresponds in principle to the embodiment according to FIGS. 1 to 6.
  • a holder 37 is provided which is inclined in the direction of the deflection edge 31, so that overall shorter needle-shaped feeders 19 Can find use.
  • Another difference is that the bar 23 with the cutting device 24 and the bar 30 with the deflection edge 31 are combined to form an assembly which can only be adjusted together relative to the base plate 17 and the feeders 19.
  • thread feeders 19 are provided, which are provided by means of drives 20 designed as drive motors are pivotable between a rest position A and a working position B.
  • the eyelets 22 of the thread feeders 19 move on a movement path that largely corresponds to the movement paths of the exemplary embodiments according to FIGS. 1 to 6 and FIGS. 7 and 8.
  • the axis 40 of the drive motors lies lower than the deflection edge 31, so that the thread section 14a is tensioned well, as in the other embodiments, which is brought into a receiving position in the path of movement of the hook 11.
  • a blade 55 is provided instead of a rotating knife disk 25, which preferably has a razor-sharp edge.
  • This blade 55 which is easily exchangeable, is oriented in such a way that a weft thread 14, which is carried along by the hook 11, slides over the cutting edge of this blade 55 and is thereby cut.
  • This cutting device 24 with the stationary blade 55 does not require any drive.
  • a holder 57 is attached to the base plate 17 and carries a fabric spreader 56.
  • the holder 57 is fastened to the base plate 17 with adjustable fastening means 59, for example with fastening screws 59, which penetrate the slot guides of the holder 57 and slot guides of the base body 17 extending transversely thereto.
  • an edge insert 58 which is indicated by dashed lines, can also be attached to the holder 57.
  • the edge insert 58 can be mounted in not shown manner by means of adjustable * attachment means to the holder 57th
  • the thread feeder 19 which is in the working position B is moved back to an intermediate position between the working position B and the rest position A when the portion 14a of the weft thread 14 has been picked up by the gripper 11 and is inserted into the shed. This ensures that the withdrawal of one weft thread by the thread eyelet 22 in the intermediate position is not disturbed by the other weft threads and that this weft thread is held in a favorable position within the shed.

Landscapes

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

Abstract

L'invention concerne un dispositif (16) permettant de sélectionner des fils de trame (14) et de les fournir à une pince (11) de métier à tisser à pinces. Selon l'invention, il est prévu que des fournisseurs de fils (18) avec leurs mécanismes d'entraînement (20), un guide de renvoi (31) pour les fils de trame (14) et un dispositif de coupe (24) forment une unité modulaire, qui est montée de manière ajustable dans le sens de la largeur de la bande, pour s'adapter à différentes largeurs de bandes.
EP04765800A 2003-10-21 2004-10-05 Dispositif pour selectionner des fils de trame et les fournir a une pince de metier a tisser a pinces Withdrawn EP1680539A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2003149644 DE10349644A1 (de) 2003-10-21 2003-10-21 Vorrichtung zum Auswählen und Zustellen von Schussfäden zu einem Greifer einer Greiferwebmaschine
PCT/EP2004/011068 WO2005047583A1 (fr) 2003-10-21 2004-10-05 Dispositif pour selectionner des fils de trame et les fournir a une pince de metier a tisser a pinces

Publications (1)

Publication Number Publication Date
EP1680539A1 true EP1680539A1 (fr) 2006-07-19

Family

ID=34529758

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04765800A Withdrawn EP1680539A1 (fr) 2003-10-21 2004-10-05 Dispositif pour selectionner des fils de trame et les fournir a une pince de metier a tisser a pinces

Country Status (4)

Country Link
EP (1) EP1680539A1 (fr)
CN (1) CN1871387B (fr)
DE (1) DE10349644A1 (fr)
WO (1) WO2005047583A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006034262A1 (de) * 2006-07-18 2008-01-24 Picanol N.V. Vorrichtung zum Zustellen von Schussfäden für eine Webmaschine
JP5731098B2 (ja) * 2008-11-07 2015-06-10 津田駒工業株式会社 レピア織機の緯入れ方法及びその装置
CN105002636B (zh) * 2015-07-31 2017-03-01 陈仲纪 一种剑杆织机废边料节省方法
CN105019109B (zh) * 2015-07-31 2017-02-01 陈仲纪 一种剑杆织机废边省料方法

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3299909A (en) * 1963-09-19 1967-01-24 Golobart Ramon Balaguer Selective weft presenting device
FR1538375A (fr) * 1967-06-13 1968-09-06 Perfectionnements aux machines à tisser
EP0161014B1 (fr) * 1984-04-06 1988-09-21 Picanol N.V. Dispositif d'annulation de l'insertion pour métiers à tisser à griffes
DE4325905C1 (de) * 1993-08-02 1994-10-06 Dornier Gmbh Lindauer Vorrichtung zum Zuführen von Schußfäden zu einem Schußfadeneintragorgan in Webmaschinen
US6179014B1 (en) * 1996-06-07 2001-01-30 Picanol N.V. Drawing gripper for a rapier loom for receiving and positioning a filling to be inserted into a loom shed
BE1014135A3 (nl) * 2001-04-20 2003-05-06 Wiele Michel Van De Nv Inrichting voor het aanreiken van inslagdraden op een grijperweefmachine.

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2005047583A1 *

Also Published As

Publication number Publication date
CN1871387B (zh) 2011-11-02
DE10349644A1 (de) 2005-06-02
CN1871387A (zh) 2006-11-29
WO2005047583A1 (fr) 2005-05-26

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