EP1400617A2 - Vorrichtung zum Kontrollieren vom laufenden Schussfaden für eine Luftdüsenwebmaschine - Google Patents

Vorrichtung zum Kontrollieren vom laufenden Schussfaden für eine Luftdüsenwebmaschine Download PDF

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Publication number
EP1400617A2
EP1400617A2 EP03255793A EP03255793A EP1400617A2 EP 1400617 A2 EP1400617 A2 EP 1400617A2 EP 03255793 A EP03255793 A EP 03255793A EP 03255793 A EP03255793 A EP 03255793A EP 1400617 A2 EP1400617 A2 EP 1400617A2
Authority
EP
European Patent Office
Prior art keywords
reed
weft
air
air jet
running
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Withdrawn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
EP03255793A
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English (en)
French (fr)
Other versions
EP1400617A3 (de
Inventor
Hideki Banba
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.)
Tsudakoma Corp
Original Assignee
Tsudakoma Industrial Co Ltd
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 Tsudakoma Industrial Co Ltd filed Critical Tsudakoma Industrial Co Ltd
Publication of EP1400617A2 publication Critical patent/EP1400617A2/de
Publication of EP1400617A3 publication Critical patent/EP1400617A3/de
Withdrawn legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D47/00—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms
    • D03D47/28—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
    • 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
    • D03D47/302—Auxiliary nozzles

Definitions

  • the present invention relates to a running weft control device of an air-jet loom for picking through air jet.
  • an air-jet loom for picking through air jet uses a reed having a recess for weft guiding. Along the guiding recess of the reed, the weft is subject to picking through air jet specifically for picking. The weft having run along the guiding recess is beaten up by the reed.
  • JP-A-60-59151 discloses a technique of providing an auxiliary nozzle along a reed.
  • a picking device of an air-jet loom provided with one more auxiliary nozzle as a pair with the auxiliary nozzle for directing air jet in parallel to the jet direction thereof.
  • the problem is that, with the former conventional technology above, the weft subjected to picking along the weft guiding recess of the reed is sometimes off from the weft guiding recess serving as the running path for the weft. This is caused depending on the physical properties of the weft, reed condition such as air leakage or contamination, or setting condition of the jet direction of the auxiliary nozzle provided to the reed. Once off the weft guiding recess, the weft does not sufficiently receive the jet from the auxiliary nozzle, causing the weft to be unstable when it runs.
  • the latter conventional technology above merely includes, one more auxiliary nozzle as a pair with an existing auxiliary nozzle for directing air jet in parallel to the jet direction thereof.
  • the newly-provided auxiliary nozzle is directed towards the weft running path for air jet as does the other auxiliary nozzle, resulting in air jet interference between the auxiliary nozzles.
  • the weft resultantly becomes unstable when it runs.
  • the air is injected toward the running path from the auxiliary nozzle as well as another auxiliary nozzle. Therefore, once off the weft guiding recess, the weft does not sufficiently receive the jet from each auxiliary nozzle, causing the weft to be unstable when it runs.
  • the present invention is proposed in view of such conventional problems, and provides a running weft control device of an air-jet loom capable of stable picking with a simple structure.
  • the present invention is directed to a running weft control device of an air-jet loom including a plurality of air jet holes provided along a longitudinal direction of a reed as a piece with the reed of the loom or separately therefrom.
  • the air jet holes are provided towards the front of the reed in a weft running direction different from a jet direction of an auxiliary nozzle provided to the reed.
  • the air jet holes are formed towards a weft guiding section of the reed so as not to cause the weft to come off from the weft running path due to air jet coming from the air jet holes.
  • the expression of "as a piece with the reed of the loom” means that the air jet holes are provided to a member swinging together with the reed (herein, a reed retainer, which is not shown but will be described later). Further, “separately therefrom” means, in stead of the member swinging together with the reed, the air jet holes are securely fixed to a position not causing interference with the reed and the auxiliary nozzle.
  • the air jet holes may be formed to an air jet pipe provided along the reed, or to a running control auxiliary nozzle arranged between the auxiliary nozzles provided along the reed.
  • the running control auxiliary nozzle is provided between the auxiliary nozzles provided along the reed to be farther from the reed than the auxiliary nozzles.
  • the running control auxiliary nozzle may be provided between the auxiliary nozzles provided along the reed, and the air jet direction of which is directed upward towards the weft guiding section.
  • the air jet holes may be each provided at a tip part of the auxiliary nozzle provided along the reed to direct air jet more upward than the air jet aimed for weft conveyance.
  • air jet is directed towards the weft running path being the weft guiding section from the front of the reed in a direction different from a jet direction of the auxiliary nozzle.
  • the weft being about to come off the weft running path is controlled to be on the running path, or the weft already off from the running path is put back onto the running path with reliability.
  • the weft is controlled by its running position on the weft running path, thereby enabling stable picking.
  • running control auxiliary nozzle can bring the air jet holes closer to the weft running path, and thus can prevent the weft from coming off from the running path with more reliability. Further, forming the air jet holes to an auxiliary nozzle for running weft control can simplify the device structure to a greater degree.
  • FIGS. 1 to 3 are diagrams showing a first embodiment of the present invention.
  • a running weft control device 10 of an air-jet loom of the present embodiment is structured, to be a piece, with a reed 12 extending to the direction along which a plurality of thin reed dents are arranged parallel to one another.
  • the front and back sides of the reed dent plurally arranged at regular intervals are so arranged as to be parallel to the opening plane of the weft 14.
  • Each of the reed dents is formed with a weft guiding section 18 being a recess to serve as a running path over which a weft 16 passes due to air jet.
  • a weft guiding section 18 of the reed 12 an auxiliary nozzle 30 for picking is provided at regular intervals for air jet in the picking direction.
  • the running weft control device 10 of the present embodiment is attached to a reed retainer, which is swingably attached to the loom for swinging motion in a predetermined manner by a driving mechanism (not shown). Further included is an air jet pipe 20 provided to the reed 12 to be a piece therewith. The air jet pipe 20 is located below the reed 12 along the longitudinal direction thereof. Along the longitudinal direction of the reed 12, a plurality of predetermined positions of the air jet pipe 20 are each formed with an air j et hole 22, which is formed sideways at predetermined intervals. The air jet holes 22 are formed towards the weft guiding section 18 of the reed 12. To the air jet pipe 20, connected is an air source 28 via an electromagnetic valve 24 and a regulator 26 for pressure adjustment. The air source 28 is exemplified by a compressor for generating compressed air.
  • the picking device is provided with a feeder 32 to the base of the loom to feed the weft 16.
  • the weft 16 drawn out from the feeder 32 is stored for length measurement by a length measurement storage device 34.
  • the weft 16 thus stored by the length measurement storage device 34 is unwound responding to an unwind signal coming from a control device, which is not shown.
  • the unwound weft is subjected to picking by air jet coming from a main nozzle 36.
  • the weft 16 subjected to picking by the main nozzle 36 runs along the weft guiding section 18 of the reed 12. Further, still along the weft guiding section 18, the weft 16 is guided to run by air jet coming from an auxiliary nozzle 30.
  • air jet is directed from the air jet hole 22 of the air jet pipe 20 provided to the reed 12 towards the weft guiding section 18 being the weft running path.
  • directed air jet places the weft 16 being about to be off from the weft running path back to the weft guiding section 18 .
  • the air jet coming from the air jet hole 22 of the air jet pipe 20 is directed with a picking timing by the electromagnetic valve 24.
  • the control device that is not shown is in charge of this control.
  • the weft 16 can be put back to the running path with reliability even if it is about to be off therefrom, realizing picking in a stable manner. Moreover, with a structure of directing air jet by the electromagnetic valve 24 from the air jet holes 22 with a picking timing, the amount of air jet is reduced, successfully achieving power saving.
  • the air jet pipe 20 may be provided to upper or lower part of a textile fabric 38.
  • the air jet pipe 20 is not necessarily provided to be a piece with the reed 12. Without being attached to the reed retainer, the air jet pipe 20 may be provided separately from the reed 12 and the auxiliary nozzle 30 so as not to cause interference therewith.
  • air jet may be directed towards the weft guiding section 18, preferably towards an upper jaw of the weft guiding section 18.
  • the pipe and the air jet holes 22 may be so set as to cover the entire width of the textile fabric 38, or may be provided in such positions that the weft 16 easily comes out.
  • the hole diameter of the air jet hole 22 or a hole pitch may be also set as appropriate.
  • the number of the air jet holes 22 may be increased in the latter picking period in which picking becomes easily unstable.
  • the electromagnetic valve 24 may continue directing air jet while the weaving machine is in operation but stop when the weaving machine is not operating.
  • air jet may be always manually directed when the weaving machine is in operation.
  • an air jet hole for directing air jet to the weft guiding section 18 of the reed 12 is each provided to a plurality of running control auxiliary nozzles 42 coupled to a pipe connected to the air source.
  • the plurality of running control auxiliary nozzles 42 are provided between the auxiliary nozzles 30 with some distance from the reed 12.
  • the running control auxiliary nozzles 42 may be provided to the reed 12 via an attachment piece (not shown) so as to be adjustable in position in the weft or warp direction.
  • running weft control device 40 of the present embodiment similar effects as above embodiment can be successfully achieved. What is better, the running control auxiliary nozzles 42 can be closer to the weft running path, thereby achieving more reliable running weft control.
  • the running weft control device 50 of the present embodiment is also structured by a plurality of running control auxiliary nozzles 52 provided between the auxiliary nozzles 30. These running control auxiliary nozzles 52 are arranged in the same direction as the auxiliary nozzles 30, and air jet is directed upward towards the weft guiding section of the reed. Such a structure also can put back the weft 16 to the running path with reliability even if it is about to be off therefrom.
  • the running control auxiliary nozzles 52 of the running weft control device 50 of the present embodiment may be, as shown in FIG. 6, used together with the auxiliary nozzles 30, and other than a jet hole 31 of the auxiliary nozzle 30, another air jet hole 22 may be formed to the top of the auxiliary nozzle 30.
  • Such a structure allows component sharing, and thus favorably leads to cost reduction.
  • the running weft control device of the air-jet loom of the present invention is not surely restrictive to the above embodiments, and the air jet hole for running weft control may be set by number, position, and structure as appropriate.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
EP03255793A 2002-09-18 2003-09-16 Vorrichtung zum Kontrollieren vom laufenden Schussfaden für eine Luftdüsenwebmaschine Withdrawn EP1400617A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2002271444A JP2004107819A (ja) 2002-09-18 2002-09-18 空気噴射式織機の緯糸飛走制御装置
JP2002271444 2002-09-18

Publications (2)

Publication Number Publication Date
EP1400617A2 true EP1400617A2 (de) 2004-03-24
EP1400617A3 EP1400617A3 (de) 2005-02-09

Family

ID=31944550

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03255793A Withdrawn EP1400617A3 (de) 2002-09-18 2003-09-16 Vorrichtung zum Kontrollieren vom laufenden Schussfaden für eine Luftdüsenwebmaschine

Country Status (3)

Country Link
EP (1) EP1400617A3 (de)
JP (1) JP2004107819A (de)
CN (1) CN1493726A (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015177155A1 (en) * 2014-05-22 2015-11-26 Picanol Stretching device for a weft thread

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5603592B2 (ja) * 2009-12-03 2014-10-08 株式会社豊田自動織機 エアジェット織機の緯入れ装置
JP7057117B2 (ja) * 2017-12-15 2022-04-19 津田駒工業株式会社 空気噴射式織機における緯糸飛走情報の設定方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4534387A (en) * 1982-01-18 1985-08-13 Ruti-Te Strake B.V. Method and apparatus for inserting different weft threads having different properties into the warp shed of a jet weaving machine
JPH01314753A (ja) * 1988-06-10 1989-12-19 Toyota Autom Loom Works Ltd ジェットルームにおける緯入れ装置
US4915141A (en) * 1987-09-25 1990-04-10 Nissan Motor Co., Ltd. Auxiliary nozzle for air jet loom
EP1022368A1 (de) * 1999-01-22 2000-07-26 Vuts, Liberec Steuerungsteinheit für die Stafettendüse einer Luftdüsenwebmaschine
WO2000063473A1 (de) * 1999-04-14 2000-10-26 Picanol N.V. Hilfsdüse für eine webmaschine

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4534387A (en) * 1982-01-18 1985-08-13 Ruti-Te Strake B.V. Method and apparatus for inserting different weft threads having different properties into the warp shed of a jet weaving machine
US4915141A (en) * 1987-09-25 1990-04-10 Nissan Motor Co., Ltd. Auxiliary nozzle for air jet loom
JPH01314753A (ja) * 1988-06-10 1989-12-19 Toyota Autom Loom Works Ltd ジェットルームにおける緯入れ装置
EP1022368A1 (de) * 1999-01-22 2000-07-26 Vuts, Liberec Steuerungsteinheit für die Stafettendüse einer Luftdüsenwebmaschine
WO2000063473A1 (de) * 1999-04-14 2000-10-26 Picanol N.V. Hilfsdüse für eine webmaschine

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 0141, no. 15 (C-0696), 5 March 1990 (1990-03-05) & JP 1 314753 A (TOYOTA AUTOM LOOM WORKS LTD), 19 December 1989 (1989-12-19) *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015177155A1 (en) * 2014-05-22 2015-11-26 Picanol Stretching device for a weft thread
BE1021879B1 (nl) * 2014-05-22 2016-01-25 Picanol Strekinrichting voor een inslagdraad

Also Published As

Publication number Publication date
CN1493726A (zh) 2004-05-05
JP2004107819A (ja) 2004-04-08
EP1400617A3 (de) 2005-02-09

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