EP1790764A1 - Procédé et dispositif d'insertion des fils de trame - Google Patents

Procédé et dispositif d'insertion des fils de trame Download PDF

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Publication number
EP1790764A1
EP1790764A1 EP05405670A EP05405670A EP1790764A1 EP 1790764 A1 EP1790764 A1 EP 1790764A1 EP 05405670 A EP05405670 A EP 05405670A EP 05405670 A EP05405670 A EP 05405670A EP 1790764 A1 EP1790764 A1 EP 1790764A1
Authority
EP
European Patent Office
Prior art keywords
nozzle
control valve
clamping
clamping device
weft thread
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
EP05405670A
Other languages
German (de)
English (en)
Other versions
EP1790764B1 (fr
Inventor
Christoph Jenne
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
Sultex 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 Sultex AG filed Critical Sultex AG
Priority to EP20050405670 priority Critical patent/EP1790764B1/fr
Priority to DE200550010656 priority patent/DE502005010656D1/de
Publication of EP1790764A1 publication Critical patent/EP1790764A1/fr
Application granted granted Critical
Publication of EP1790764B1 publication Critical patent/EP1790764B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • D03D47/28—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms wherein the weft itself is projected into the shed
    • D03D47/30—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms wherein the weft itself is projected into the shed by gas jet
    • D03D47/3006—Construction of the nozzles
    • D03D47/3013—Main nozzles
    • 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
    • D03D47/28—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms wherein the weft itself is projected into the shed
    • D03D47/30—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms wherein the weft itself is projected into the shed by gas jet
    • D03D47/3026—Air supply systems
    • D03D47/3053—Arrangements or lay out of air supply systems

Definitions

  • the invention relates to a device for introducing weft threads in a loom according to the preamble of claim 1 and a method for introducing weft threads in a loom according to the preamble of claim 8 and a loom with such a device and for carrying out such a method.
  • An air jet weaving machine which comprises a nozzle with a mixing tube for introducing a weft thread and a reed for striking it.
  • a thread clamp is arranged to clamp the weft during cutting or during standstill of the loom and thereby prevent it from jumping back in the nozzle.
  • This arrangement of the thread clamp allows the mixing tube to be arranged close to a weft thread guide channel formed in the reed, so that the deviation in the desired position of the weft thread between the mixing tube and the weft thread guide channel can be kept small during insertion.
  • the publication WO 02095105 A1 discloses in Figures 5 and 6, an apparatus for introducing weft threads in a weaving machine, which includes a plurality of nozzles, each with a mixing tube.
  • the nozzles are each provided with a clamping device 1A, which are connected via lines 15 with control valves 17 to pressurize the Klemmeinnchtungen with compressed air or vacuum.
  • the control valves 17 are activated by a controller 20.
  • the weft insertion devices In the conventional weft insertion devices, in normal operation, they are retained in the individual nozzles after entry by means of a holding air flow to prevent spring back of the weft threads in the nozzles.
  • the weft yarns When stopping the loom, however, the weft yarns are held by clamping devices which are arranged in the mixing tube of the nozzles, and the holding air flow is interrupted, since at longer standstill of the machine there is a risk that the weft threads are damaged by the holding air flow.
  • the clamping devices have the disadvantage that they complicate the threading of individual weft threads in the associated nozzles, since the clamping devices must be opened for threading individually via the loom control.
  • the individual control of the clamping devices is associated with an additional expense, since in addition to a control valve per clamping device in addition a supply line for the compressed air is needed.
  • the object of the invention is to provide a device for introducing weft threads in a loom available which has less effort compared to conventional devices for the control, and a method which simplifies cas threading a weft thread into a nozzle.
  • a further object of the invention is to provide a weaving machine with such a device for introducing weft threads or for carrying out such a method.
  • the inventive device for introducing weft threads in a loom comprises a nozzle holder and attached thereto at least one nozzle with a mixing tube for introducing a weft thread and at least one acted upon by a medium clamping device which is arranged in the region of the nozzle to a weft inserted into the nozzle clamp.
  • the device additionally contains at least a control valve which is disposed on or in the nozzle holder or nozzle or clamping device and which is in communication with the clamping device to control the application of the same.
  • the at least one control valve is additionally connected to the at least one nozzle in order to apply a medium to this for threading a weft thread.
  • the application of both the at least one nozzle and the at least one clamping device can be controlled by means of the at least one control valve in order to switch over between loading the nozzle for threading and clamping the weft thread.
  • the at least one control valve is designed as a manually operable control valve.
  • the device includes a plurality of nozzles, wherein for each nozzle, a clamping device and a control valve are provided, which is arranged on or in the nozzle holder or nozzle.
  • the device comprises a common feed line for supplying the device with the medium used to load the clamping devices and / or for threading.
  • connection between the at least one control valve and the at least one clamping device is formed in the interior of the nozzle holder and / or in the interior of the at least one nozzle or clamping device.
  • the invention comprises a method for introducing weft threads in a weaving machine by means of a device which includes a nozzle holder and attached thereto at least one nozzle with a mixing tube.
  • the at least one nozzle for threading a weft thread is subjected to a medium and the weft inserted; the introduced into the nozzle weft thread clamped by means of at least one clamping device which is acted upon for this purpose with a medium: solved the clamping of the weft thread before the entry and the same registered by means of the nozzle.
  • the invention comprises a loom with a device for introducing weft threads according to one of the embodiments described above and / or equipped for carrying out a method according to the above description.
  • the device according to the invention and the method for introducing weft threads according to the invention have the advantage that the threading of a weft thread is simplified by the control valve attached to the nozzle holder or nozzle or clamping device, for example by the manual operation of the control valve during threading. It is also advantageous that, if the device comprises a plurality of nozzles, the device can be supplied via a single feed line with the medium used for loading the clamping devices and / or for threading.
  • the loom comprises a yarn store 21 for providing a weft yarn 2, a plurality of air nozzles 3, 4, 5.1, 5.2, a controller 11 which is connected to control valves 13, 14, 15th, and Supply lines 13, 14, which connect the control valves with the corresponding air nozzles to pressurize the air nozzles for introducing the weft thread with a medium, for example with compressed air.
  • the air nozzles include, for example, a tandem nozzle 4 and a main nozzle 3 for accelerating the weft yarn 2 withdrawn from the yarn store 21 and blowing it into a shed, and relay nozzles 5.1, 5.2 for further transporting the weft yarn in the shed.
  • the weaving machine shown comprises a reed 18 for striking the inserted weft thread and at least one snowing device 17 for separating the weft thread.
  • the main nozzle 3, the relay nozzles 5.1, 5.2 and Riet 18 may be mounted on a common batten.
  • Fig. 2A shows an oblique view of an embodiment of an apparatus 1 for introducing weft threads according to the present invention.
  • the device comprises a nozzle holder 9 and attached to it at least one nozzle 3.1-3.4 with a mixing tube 6.1-6.4 for introducing a weft thread 2 and at least one clamping device 7.1-7.3 which can be acted upon by a medium and which is arranged in the region of the nozzle in order to insert one into the Clamp nozzle inserted weft.
  • the device comprises four nozzles 3.1 - 3.4, each with a mixing tube 6.1 - 6.4 and a clamping device 7.1 - 7.3, wherein the fourth clamping device is covered by the nozzle holder 9.
  • the number of nozzles in the device can be freely chosen within a wide range, so that the device can comprise, for example, one, two, three, four, five, six or more nozzles.
  • the device according to the invention additionally comprises at least one control valve which is arranged on or in the nozzle holder 9 or nozzle 3.1-3.4 or clamping device 7.1-3.3 and which is connected to the clamping device 7.1 7.3 in order to control the application of the same to the medium.
  • openings 13.1b-13.3b are provided in the nozzle holder or in the nozzles, for example for inserting screw terminals for supply lines, in order to supply the nozzles with a medium for accelerating and registering the weft threads.
  • the device according to the invention comprises a plurality of nozzles 3.1-3.4 each having a clamping device 7.1-7.3 and a control valve for each nozzle, and a common supply line 8b for supplying the device with the medium used to pressurize the clamping devices.
  • connection between the at least one control valve and the at least one clamping device 7.1 - 7.3 in the interior of the nozzle holder 9 and / or inside the at least one nozzle 3.1 - 3.4 and / or clamping device 7.1 - 7.3 is formed.
  • Fig. 2B shows an oblique view of the embodiment of Fig. 2A from a different angle.
  • the device 1 comprises a nozzle holder 9, in which four nozzles 3.1 - 3.4 each with a mixing tube 6.1 - 6.4 and a clamping device 7.1 - 7.3, to clamp a inserted into the respective nozzle weft, wherein the fourth clamping device through the nozzle holder 9 is hidden.
  • the device 1 to each of the four nozzles 3.1 - 3.4 comprises a control valve which is arranged in the nozzle holder 9. Of the four control valves, only the operation keys 8.1a-8.4a are visible in FIG. 2A.
  • 9 openings 13.1b - 13.3b are provided in the nozzle holder to apply to the nozzles with a medium for accelerating and registering the weft threads.
  • Fig. 3A shows a schematic representation of a second embodiment of a device according to the present invention with the weft thread in the clamped state.
  • the device 1 comprises a nozzle holder 9 and attached thereto a nozzle 3 with a mixing tube 6 for introducing a weft thread 2 and a clampable with a medium clamping device 7 which is arranged in the region of the nozzle.
  • the nozzle and the clamping device is shown in section, so that their structure is visible.
  • the clamping device 7 may, for example, contain a piston which can be acted upon by the medium and a pressure bolt connected to the same, or a membrane to which Weft against a support, for example, to press a wall of the mixing tube and clamp.
  • the clamping device may further include a return spring for returning the piston.
  • the device 1 of the second embodiment comprises a control valve 8, for example, as shown in Fig. 3A, a so-called 2/2-way valve, which is arranged on or in the nozzle holder 9 or nozzle 3 or clamping device 7 and in the frame this embodiment is referred to as an internal control valve, and which can be actuated, for example, with a manual key 8a.
  • the internal control valve 8 is connected on the input side to the clamping device 7 and a supply line 8.1b of the device 1, in which, if necessary, a fixed or adjustable throttle element may be inserted 8.1c to limit the flow of the medium.
  • the internal control valve 8 as shown in Fig. 3A, is closed, the clamping device is subjected to the full pressure of the medium in the supply line 8.1b and the weft thread 2 is clamped.
  • the device according to the invention comprises at least one further control valve 12, for example a 3/2-way valve, which is referred to below as an external control valve, and which is used e.g. can be controlled by the loom control to pressurize and / or relax the supply line 8.1b.
  • the supply line 8.1b and thus the clamping device 7 via the external control valve 12 can be pressurized to clamp the weft 2, while the operation of the loom and / or during a weft insertion the supply line 8.1b via the external control valve 12th can be relaxed to release the clamping of the weft.
  • the supply lines of several devices can be connected to the output of the external control valve 12 in order to control the clamping of several weft threads via the same control valve.
  • the internal control valve 8 arranged on or in the nozzle holder 9 or nozzle 3 or clamping device 7 is connected on the output side to the nozzle 3, so that these are for threading a weft thread can be loaded with medium.
  • Fig. 3B shows a schematic representation of such an embodiment during the threading of the weft thread.
  • the internal control valve 8 is, as already described in FIG. 3A, connected on the input side to the clamping device 7 and the supply line 8.1b of the device 1.
  • the internal control valve 8 and optionally the external control valve 12 as shown in Fig.
  • the nozzle 3 is supplied with the supplied via the supply line 8.1b medium, wherein the flow through a flow resistance in the supply line, for example, as shown Throttle 8.1c, is limited.
  • Throttle 8.1c the flow resistance in the supply line
  • the pressure of the medium, with which the clamping device 7 is acted on decreases to the extent that it is opened, for example, by a correspondingly designed return spring, and the path for the weft yarn 2 releases.
  • the weft thread can now be introduced into the nozzle 3 with the aid of the medium supplied for threading.
  • the device 1 includes a plurality of nozzles 3, wherein for each nozzle, a clamping device 7 and an internal control valve 8 are provided, which is arranged on or in the nozzle holder 9 or nozzle 3 or clamping device 7.
  • the device comprises a common feed line 8b in order to supply the device with the medium used for acting on the terminal directions and / or for threading.
  • FIG. 3B shows such a common supply line 8b connected to individual supply lines 8.1b-8.4b in order to supply the medium to the respective internal control valves 8 and clamping devices 7.
  • throttle elements 8.1c - 8.4c are inserted, which limit the flow, as described in Fig. 3B.
  • the pressure of the medium in the common supply line 8b only slightly decreases when one of the internal control valves is opened, so that only the clamping device associated with the respective control valve is opened, while the remaining clamping devices maintain the clamping of the weft threads. Since normally only one weft thread at a time or only one internal control valve is opened at once, the number of nozzles in the device 1 is not critical.
  • a further control valve 12 is provided, for example a 3/2-way valve, which is referred to below as an external control valve, and which is used, for example, as an external control valve.
  • an external control valve can be controlled by the loom control to pressurize and / or relax the common supply line 8b.
  • the supply line 8b can be pressurized via the external control valve 12 to clamp the associated weft yarns 2, while the operation of the weaving machine and / or during the weft insertion, the supply line 8b can be relaxed via the external control valve 12 to the To release clamping of the weft threads.
  • the internal control valves and occasionally the throttle elements in the nozzle holder 9 and / or in the nozzles 3 and / or in the clamping devices 7 are integrated.
  • the common feed line for the medium for threading and / or clamping of the weft threads and the arrangement of the individual feed lines in the interior of the nozzle holder and / or nozzles allow savings in the manufacture of the device.
  • Fig. 4A shows a schematic representation of a third embodiment of a device according to the present invention with the weft thread in the clamped state.
  • the device 1 comprises a nozzle holder 9 and attached thereto a nozzle 3 with a mixing tube 6 for introducing a weft thread 2 and a clampable with a medium clamping device 7 which is arranged in the region of the nozzle.
  • the device 1 of the third embodiment comprises a control valve 8, for example a 2/2-way valve or 2/3-way valve or, as shown in Fig.
  • a so-called 5/2-way valve which is arranged on or in the nozzle holder 9 or nozzle 3 or clamping device 7 and which can be actuated, for example, with a manual key 8a.
  • the control valve 8 is connected on the input side to a supply line 8b of the device 1 and via an output to the clamping device 7.
  • the clamping device is subjected to the pressure of the medium in the supply line 8b and the weft thread 2 clamped.
  • control valve 8 is designed as a 5/2-way valve and connected via a second output to the nozzle 3, so that it can be acted upon for threading a weft thread with medium.
  • a fixed or adjustable throttle element 8c may be provided between the control valve and the nozzle to adjust the flow rate of the medium for threading.
  • Fig. 4B shows a schematic representation of such an embodiment during the threading of the weft thread.
  • the control valve 8 is, as already described in FIG.
  • the device 1 includes a plurality of nozzles 3, wherein for each nozzle a clamping device 7 and a Control valve 8 are provided, which is arranged on or in the nozzle holder 9 or nozzle 3 or clamping device 7.
  • the device comprises a common supply line 8b in order to supply the device with the medium used for loading the clamping devices and / or for threading.
  • the control valves and optionally the throttle elements in the nozzle holder 9 and / or in the nozzles 3 and / or in the clamping devices 7 are integrated.
  • FIGS. 4A and 4B An exemplary embodiment of the method according to the invention for introducing weft threads in a weaving machine will be described below with reference to FIGS. 4A and 4B.
  • the insertion of the weft threads and in connection therewith the threading and clamping of the weft threads takes place in the exemplary embodiment by means of a device 1, which comprises a nozzle holder 9 and fixed thereto at least one nozzle 3 with a mixing tube 6.
  • the at least one nozzle is first applied to thread a weft thread 2 with a medium and inserted the weft thread, and inserted into the nozzle weft thread clamped by at least one clamping device 7, which is acted upon for this purpose with a medium.
  • the clamping of the weft thread is released and the same entered by means of the nozzle.
  • the application of pressure to the nozzle 3 for threading and / or the clamping device 7 is controlled by at least one control valve 8 arranged on or in the nozzle holder 9 or nozzle 3 or clamping device 7.
  • the control valve 8 is operated by hand.
  • a 2/2-way valve may be provided in the device, which may for example be used in the manner described in Figures 3A and 3B, or a 5/2-way valve, which, for example, in the below the figures 4A and 4B described manner can be used.
  • the device according to the invention and the method according to the invention for inserting weft threads in a weaving machine simplify the threading of a weft thread by, for example, actuating the control valve attached to the nozzle holder or nozzle with one hand while introducing the weft thread into the corresponding nozzle with the other hand becomes. It is also advantageous that the device can be supplied via a single supply line with the medium used for loading the clamping devices and / or for threading. The common supply line for the medium for threading and / or clamping the weft threads allows an economical production of the device and an economical installation of the same in the weaving machine.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
EP20050405670 2005-11-25 2005-11-25 Procédé et dispositif d'insertion des fils de trame Not-in-force EP1790764B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP20050405670 EP1790764B1 (fr) 2005-11-25 2005-11-25 Procédé et dispositif d'insertion des fils de trame
DE200550010656 DE502005010656D1 (de) 2005-11-25 2005-11-25 Vorrichtung und Verfahren zum Eintragen von Schussfäden

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20050405670 EP1790764B1 (fr) 2005-11-25 2005-11-25 Procédé et dispositif d'insertion des fils de trame

Publications (2)

Publication Number Publication Date
EP1790764A1 true EP1790764A1 (fr) 2007-05-30
EP1790764B1 EP1790764B1 (fr) 2010-12-08

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EP20050405670 Not-in-force EP1790764B1 (fr) 2005-11-25 2005-11-25 Procédé et dispositif d'insertion des fils de trame

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EP (1) EP1790764B1 (fr)
DE (1) DE502005010656D1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITMI20090336A1 (it) * 2009-03-06 2010-09-07 Promatech Spa Ugello di lancio con mezzi di ritegno di trama per un telaio tessile ad aria.
CN104047095A (zh) * 2013-03-15 2014-09-17 株式会社丰田自动织机 空气喷射织机的主喷嘴
CN106012244A (zh) * 2016-07-28 2016-10-12 吴江金叶织造有限公司 基于喷气织机的双进气孔主喷嘴

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29917872U1 (de) * 1999-10-09 2000-01-20 Dornier Gmbh Lindauer Schussfadeneintragsorgan, insbesondere Stafettendüse für eine Luftdüsenwebmaschine
WO2002095105A1 (fr) * 2001-05-21 2002-11-28 Picanol N.V., Naamloze Vennootschap Pince a fil pour machine a tisser et machine a tisser comprenant cette pince a fil
DE10135446A1 (de) * 2001-07-20 2003-02-06 Iropa Ag Fadenselektor

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29917872U1 (de) * 1999-10-09 2000-01-20 Dornier Gmbh Lindauer Schussfadeneintragsorgan, insbesondere Stafettendüse für eine Luftdüsenwebmaschine
WO2002095105A1 (fr) * 2001-05-21 2002-11-28 Picanol N.V., Naamloze Vennootschap Pince a fil pour machine a tisser et machine a tisser comprenant cette pince a fil
DE10135446A1 (de) * 2001-07-20 2003-02-06 Iropa Ag Fadenselektor

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITMI20090336A1 (it) * 2009-03-06 2010-09-07 Promatech Spa Ugello di lancio con mezzi di ritegno di trama per un telaio tessile ad aria.
EP2226416A1 (fr) * 2009-03-06 2010-09-08 Promatech S.p.A. Buse de lancement avec supports de retenue de trame pour métier à tisser pneumatique
CN104047095A (zh) * 2013-03-15 2014-09-17 株式会社丰田自动织机 空气喷射织机的主喷嘴
CN106012244A (zh) * 2016-07-28 2016-10-12 吴江金叶织造有限公司 基于喷气织机的双进气孔主喷嘴

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Publication number Publication date
EP1790764B1 (fr) 2010-12-08
DE502005010656D1 (de) 2011-01-20

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