EP1428918A2 - Tuyère auxiliaire pour un métier à tisser - Google Patents

Tuyère auxiliaire pour un métier à tisser Download PDF

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Publication number
EP1428918A2
EP1428918A2 EP04004657A EP04004657A EP1428918A2 EP 1428918 A2 EP1428918 A2 EP 1428918A2 EP 04004657 A EP04004657 A EP 04004657A EP 04004657 A EP04004657 A EP 04004657A EP 1428918 A2 EP1428918 A2 EP 1428918A2
Authority
EP
European Patent Office
Prior art keywords
auxiliary nozzle
hollow needle
outflow opening
upper edge
auxiliary
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
EP04004657A
Other languages
German (de)
English (en)
Other versions
EP1428918B1 (fr
EP1428918A3 (fr
Inventor
Jozef Peeters
Joseph Verhulst
Jean Marie Bamelis
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 EP1428918A2 publication Critical patent/EP1428918A2/fr
Publication of EP1428918A3 publication Critical patent/EP1428918A3/fr
Application granted granted Critical
Publication of EP1428918B1 publication Critical patent/EP1428918B1/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
    • D03D47/28—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
    • 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 invention relates to an auxiliary nozzle for a weaving machine, which is designed as a hollow needle and which in one to a closed Point adjoining wall with one or more Outflow openings is provided when the auxiliary nozzle attached to the loom on a weft insertion channel are directed.
  • auxiliary nozzles are known from US Pat. No. 5,020,574. She support the insertion of a weft thread into the shed a loom. There are several such auxiliary nozzles for this purpose arranged across the width of the sley, each deliver a fluid flow that is transporting one into one Weft insertion channel of a reed blown-in weft supported. The auxiliary nozzles are arranged so that the one attached in a wall below the top Blow opening or blow opening in a certain position to the top wall and the back wall of the weft insertion channel are aligned. The one flowing out of the blow orifice Fluid flow is essentially in the longitudinal direction of the Shot entry channel directed and has a component diagonally upwards.
  • the auxiliary nozzles move with every weft insertion through the lower warp thread level into the shed. It is established that warp threads that consist of several thin single filaments and are only slightly twisted, fray or fray at the spots, where the auxiliary nozzles through the lower warp thread level into the The shed is moved in and out again. This unraveling or Fraying occurs mainly in filament threads, which are thin Plastic filaments run essentially parallel to one another and at regular intervals Distances are welded together. In this case, a Fabric woven in the places where the auxiliary nozzles go through the lower one Warp thread plane has a different appearance than the rest of the tissue. In the area of the auxiliary nozzles, these warp threads get a Larger volume than the other Velcro threads because the thin filaments are not are arranged exactly next to each other.
  • the invention has for its object an auxiliary nozzle of the aforementioned Type in such a way that the risk of damage to warp threads is reduced.
  • the outflow opening is close to the upper edge the hollow needle is arranged so that - when the auxiliary nozzle in a Loom is installed - the outflow opening completely through the early Warp thread level passes through and out late through the warp thread level the shed moved out. It is through the auxiliary nozzle according to the invention possible that the fluid flow from the or the outlet openings less or less adversely affects the warp threads.
  • the hollow needle in the Area of the tip is provided with a bulge that leads to the weaving smooth is directed when the auxiliary nozzle is installed in the loom.
  • the walls of the bulge connect continuously to the walls of the hollow needle.
  • the bulge has a wall which is substantially the same as the outflow opening wall or openings aligned.
  • the cross section of the interior perpendicular this can then be reduced. So that's the advantageous one Further training possible that at least those with the or the wall provided with the outflow openings has an increased wall thickness having.
  • the wall thickness can be increased without the flow cross-section to the outflow openings is reduced and the flow resistance is increased as the widening of the interior in the area of the bulge the flow cross section increased.
  • outflow opening or outflow openings as nozzles are designed. With this nozzle shape, the or bundle and straighten the fluid jets better so that they are one develop greater driving force on a weft thread can.
  • the tip of the hollow needle has a substantially straight upper edge has that extends up to the bulge extends. It is advantageously provided that the Top edge at an angle between 70 ° and 110 ° to the longitudinal axis the hollow needle runs.
  • the loom shown in Fig. 1 has a reed 3, which consists of a variety of slats, each have a cutout around a U-shaped weft insertion channel 4 to form.
  • weft insertion channel 4 weft threads 1, 2 are entered in a shed 21, the from warp threads in an upper and a lower warp thread level 17, 18 is formed, as shown in Figs. 2 and 3 is.
  • the weft threads 1 or 2 are each from a main blowing nozzle 5, 6 blown.
  • the further transport of the weft threads 1 or 2 is supported by air jets 7 which Blow auxiliary nozzles 8 into the weft insertion channel 4.
  • the Air jets 7 are substantially in the longitudinal direction of the Weft insertion channel 4 directed and have a slight obliquely upward component that to the top Wall 15 and the rear wall of the weft insertion channel 4 the weft threads 1, 2 is directed.
  • the reed 3, the Main blowing nozzles 5, 6 and the holder 9 of the auxiliary nozzles 8 are on attached to a shop profile 10 of a sley, such as that is known from US 50 20 574.
  • the store profile For example, 10 is not on one of the stilts illustrated shaft of the sley attached to the back and forth movement is driven.
  • a shed 21 becomes one upper warp thread level 17 and a lower warp thread level 18 formed, which converge in the stop line 19 on the weft threads are struck by the reed 3, so that a fabric 20 is formed. Striking one Weft takes place through the rear wall 16 of the U-shaped Weft insertion channel 4 leading to the central part 24 of the reed heard.
  • the upper part 23 of the slats of the reed 3 forms an upper wall 15 of the guide channel 4.
  • the lower Wall 14 of the guide channel 4 is from the lower part 22 of the Slats of the reed 3 are formed.
  • the auxiliary nozzle 8 is as Hollow needle 11 designed near its tip 12 in one Side wall 26 is provided with an outflow opening 25. how 4 can be seen, the blowing opening 25 consists of a Many small openings.
  • the hollow needle 11 of the auxiliary nozzle 8 is in the area of the tip 12 with a lateral bulge 13 provided, which faces the reed 3, if the auxiliary nozzle 8 is attached to the sley.
  • the bulge 13 has a side wall 27, which is essentially lies in the extension of the side wall 26 of the hollow needle 11, in which the outflow opening 25 is provided.
  • the bulge 13 is near the lower part 22 of the reed 3 in Area of the lower wall 14 of the weft insertion channel 4 arranged.
  • the distance D between the bulge 13 and the lower part 22 of the reed is, for example, smaller than 3mm.
  • the auxiliary nozzle 8 is provided with an upper edge 28 which is extends into the region of the bulge 13.
  • the essentially rectilinear upper edge 28 closes with curves with relative large radius to the hollow needle 11 and the bulge 13 on.
  • the highest point 30 of the tip 12 of the hollow needle 11 is located in the region of the bulge 13.
  • the upper edge 28 of the auxiliary nozzle extends 8, when mounted on the sley, approximately tangential to a circle 31 around the axis of the shaft of the sley.
  • the Upper edge 28 at an angle of approximately 110 ° to the longitudinal axis 32 the auxiliary nozzle 8.
  • the auxiliary nozzles 8 are by means of the movement of the sley for every weft thread entry between the warp threads of the warp thread level 18 into the shed 21 and after striking of the weft thread through the warp thread plane 18 again moved out of the shed 21.
  • the angle H is like this designed that the near the reed 3 highest point 30 of the upper edge 28 of the bulge 13 first comes into contact with this lower warp thread level 18.
  • the warp thread levels 17 and 18 move further apart into the position according to FIG. 2, when the auxiliary nozzles 8 into the lower warp thread plane 18th penetration.
  • the warp threads 18 lie on the side walls 27, 33 the bulge 13 and on the slats 38 of the reed 3 on. This has the consequence that the near the blow opening 25 of the Auxiliary nozzles 8 located warp threads 18 are tensioned.
  • This Tensioning causes warp threads that consist of several juxtaposed thin filaments exist that the filaments something to be pressed against each other. This causes that the air jet 7 of the auxiliary nozzles 8 between the less individual filaments can penetrate. This too is the unraveling of warp threads limited.
  • the 8 to 11 is the same Auxiliary nozzle 8 with a side facing the reed 3 Bulge 13 provided.
  • this lower warp thread plane 18 has an angle H which is so designed is that the part of the upper edge facing the reed 3 28 last and the part facing away from the reed 3 the upper edge 28 first with the warp threads of the lower warp thread plane 18 comes into contact. While the auxiliary nozzle 8 through the warp thread plane 18 is moved through, the upper edge offers 28, as shown in Fig.
  • a guide for Spot welds 35 with which the individual is substantially parallel mutually extending filament threads of a warp thread the lower warp thread level 18 are interconnected.
  • Spot weld 35 can be above the upper edge 28 of the auxiliary nozzle 8 slide as it enters the shed and settles in the position shown in dashed lines in Fig. 10 moves. by virtue of the relatively large length of the top edge 28 and the angle H is avoided that the auxiliary nozzle 8 between the individual Filament threads of a warp thread of the lower warp thread level 18 can guess.
  • the upper edge 28 is so long that the Auxiliary nozzle 8, which is moved with the sley, not between two successive welding spots 35 in one Warp thread of the lower warp thread level 18 can penetrate. In order to prevents the auxiliary nozzles 8 due to their movement tear open the welding spots 35.
  • the angle of the upper edge 28 to the longitudinal axis 32 and / or the Shape of the auxiliary nozzle 8 designed as a hollow needle 11 expediently on the material of the processed warp threads so coordinated that when entering the shed the Warp threads are not damaged, i.e. not frayed or be frayed.
  • This angle is preferably of the order of magnitude from 70 ° to 110 °.
  • the cross section of the cavity 36 of the hollow needle 11 of the auxiliary nozzle 8 is in the area of the beginning of the bulge 13 (arrow direction 34 of FIG. 11) less than in the previous one Section 39.
  • the wall thickness of the auxiliary nozzle 8 is in the range the outflow opening 25 larger than in the rest of the area Tip 12. Due to the larger wall thickness, it is possible the emerging fluid jet in the individual openings of the outflow opening better to guide because of the length of the openings is bigger. This can also limit the risk that an air jet 7 (Fig. 1) damages the warp threads.
  • the cavity 36 within the To make the auxiliary nozzle 8 aerodynamically efficient, i.e. favorable for an air jet 7 from the outflow opening 25.
  • the inner thickening 29 shown in FIG can be provided that deflect the fluid flow the outflow opening 25 improved.
  • the individual openings are the outflow opening 25 closer to the upper edge 28 of the auxiliary nozzle 8 arranged and not on an approximately circular surface, but divided into three rows one above the other.
  • the Individual openings also extend into the area of Bulge 13 so that the same number of individual openings (19 individual openings in the exemplary embodiment) closer to the upper edge 28 can be accommodated, i.e. the same Overall cross section for the outflow opening 25 is reached. Because the outflow opening 25 is earlier in this embodiment completely passed through the lower warp thread level 18 can be started earlier. There the outflow opening 25 in the opposite direction accordingly later through the lower warp thread level 18 the shed is moved out, the outflow from the Auxiliary nozzle 8 can be extended.
  • a slot-shaped nozzle is provided, which extends substantially parallel to the upper edge 28 of the auxiliary nozzle 8.
  • this outflow opening 25 a relatively large length and also one Nozzle shape 40, in particular the shape of a Lavalle nozzle.
  • a stiff air jet 7 with supersonic speed can be reached at the outlet of the nozzle opening 25.
  • Such a strip-shaped, bundled air jet is applied the nearby warp threads of the lower one Warp thread level 18 only to a small extent, so that there is a risk of Fibrillation of these warp threads is reduced.
  • the bundled one Air jet 7 can also have a high driving force Apply a weft thread 1 or 2. With the auxiliary nozzle 8 13 and 14 can therefore also the advantages of Realize embodiment of FIG. 12.
  • the outflow opening 25 exists only from a small number of individual openings, in which Embodiment only three individual openings that are different Have flow cross sections.
  • the flow cross sections of the individual openings are in the area of the bulge 13 smallest and most distant from bulge Place largest.
  • the auxiliary nozzle 8 according to the invention can not only be used for blowing out an air jet 7 are used, but rather also with another fluid with which a weft thread is transported becomes.
  • the fluid can be, for example, a liquid be like water so that a jet of liquid hits the Weft threads are directed.
  • a gas to use as a fluid or a gas in which a liquid is sprayed or atomized, for example an air jet with sprayed water.
  • the invention is not limited to that shown and described Embodiments limited. Rather, they are combinations possible between the embodiments, for example may the auxiliary nozzle 8 according to FIG. 6 an interior corresponding to the Have auxiliary nozzle 8 according to FIG. 11. The scope of protection is only determined by the claims.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
EP04004657A 1999-04-14 2000-04-14 Tuyère auxiliaire pour un métier à tisser Expired - Lifetime EP1428918B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
BE9900257 1999-04-14
BE9900257A BE1012608A3 (nl) 1999-04-14 1999-04-14 Spuitmondstuk voor een weefmachine.
EP00926927A EP1169503B1 (fr) 1999-04-14 2000-04-14 Buse auxiliaire pour metier a tisser mecanique

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
EP00926927A Division EP1169503B1 (fr) 1999-04-14 2000-04-14 Buse auxiliaire pour metier a tisser mecanique

Publications (3)

Publication Number Publication Date
EP1428918A2 true EP1428918A2 (fr) 2004-06-16
EP1428918A3 EP1428918A3 (fr) 2004-09-01
EP1428918B1 EP1428918B1 (fr) 2007-08-08

Family

ID=3891863

Family Applications (2)

Application Number Title Priority Date Filing Date
EP00926927A Expired - Lifetime EP1169503B1 (fr) 1999-04-14 2000-04-14 Buse auxiliaire pour metier a tisser mecanique
EP04004657A Expired - Lifetime EP1428918B1 (fr) 1999-04-14 2000-04-14 Tuyère auxiliaire pour un métier à tisser

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP00926927A Expired - Lifetime EP1169503B1 (fr) 1999-04-14 2000-04-14 Buse auxiliaire pour metier a tisser mecanique

Country Status (9)

Country Link
US (1) US6536482B1 (fr)
EP (2) EP1169503B1 (fr)
KR (1) KR100634900B1 (fr)
CN (1) CN1116459C (fr)
AT (2) ATE261011T1 (fr)
BE (1) BE1012608A3 (fr)
DE (2) DE50005517D1 (fr)
ES (1) ES2213014T3 (fr)
WO (1) WO2000063473A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114214778A (zh) * 2021-12-15 2022-03-22 五洋纺机有限公司 一种间隔布织造中抽除辅助纬纱的方法

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE50300789D1 (de) * 2002-04-26 2005-08-25 Sultex Ag Rueti Fang- und Haltevorrichtung für das fangseitige Schussfadenende in einer Webmaschine
JP2004107819A (ja) * 2002-09-18 2004-04-08 Tsudakoma Corp 空気噴射式織機の緯糸飛走制御装置
BE1015155A3 (nl) * 2002-10-23 2004-10-05 Picanol Nv Spuitmondstuk voor het ondersteunen van een inslagdraad in een weefmachine.
BE1015261A3 (nl) * 2002-12-19 2004-12-07 Picanol Nv Spuitmondstuk voor het ondersteunen van een inslagdraad bij een weefmachine.
DE502004003591D1 (de) * 2003-09-02 2007-06-06 Sultex Ag Webmaschine mit einer Einlegevorrichtung für schussfäden
CN102839485A (zh) * 2012-09-13 2012-12-26 吴江市隆泰喷织厂 一种辅助喷嘴的套筒
BE1022812B1 (nl) * 2015-03-11 2016-09-13 Picanol Nv Hulpblaasmondstuk voor een weefmachine
KR102118261B1 (ko) * 2018-09-27 2020-06-02 서용교 에어제트직기에서의 다중위사 위입불량 방지장치
JP7077968B2 (ja) * 2019-01-14 2022-05-31 株式会社豊田自動織機 エアジェット織機の緯糸処理装置
IT202200002681A1 (it) * 2022-02-14 2023-08-14 Itema Spa Ugello ausiliario perfezionato per telai ad aria
CN118547422B (zh) * 2024-05-26 2026-05-15 浙江理工大学 一种用于喷气织机的辅助喷嘴

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH650035A5 (en) * 1980-11-28 1985-06-28 Sulzer Ag Auxiliary blowing nozzle for an air-jet weaving machine
EP0145824B1 (fr) * 1983-12-09 1987-03-04 GebràœDer Sulzer Aktiengesellschaft Buse de soufflage auxiliaire pour métier à tisser à jet d'air
DE3444973C1 (de) * 1984-12-10 1986-04-03 Scheffel Walter Dipl Ing Weblade mit Webblatt fuer Duesenwebmaschinen
DE3643058A1 (de) * 1986-11-21 1988-06-30 Picanol Nv Duesen-webmaschine
JP2711099B2 (ja) * 1987-09-25 1998-02-10 日産テクシス株式会社 空気噴射式織機の補助ノズル
JPH0299643A (ja) * 1988-09-29 1990-04-11 Toyota Autom Loom Works Ltd ジェットルームにおける緯入れ装置
NL1001277C1 (nl) * 1995-09-25 1997-03-26 Te Strake Bv Hulpblazer voor een weefmachine.
DE19751354C1 (de) * 1997-11-20 1999-06-17 Dornier Gmbh Lindauer Hilfsblasdüse für eine Luftdüsenwebmaschine
DE29720595U1 (de) * 1997-11-20 1998-02-05 Dornier Gmbh Lindauer Hilfsblasdüse, insbesondere für eine Luftdüsenwebmaschine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114214778A (zh) * 2021-12-15 2022-03-22 五洋纺机有限公司 一种间隔布织造中抽除辅助纬纱的方法

Also Published As

Publication number Publication date
BE1012608A3 (nl) 2001-01-09
ATE261011T1 (de) 2004-03-15
DE50014554D1 (de) 2007-09-20
EP1428918B1 (fr) 2007-08-08
KR20010113775A (ko) 2001-12-28
EP1169503A1 (fr) 2002-01-09
KR100634900B1 (ko) 2006-10-17
EP1169503B1 (fr) 2004-03-03
ES2213014T3 (es) 2004-08-16
CN1355862A (zh) 2002-06-26
WO2000063473A1 (fr) 2000-10-26
US6536482B1 (en) 2003-03-25
CN1116459C (zh) 2003-07-30
EP1428918A3 (fr) 2004-09-01
DE50005517D1 (de) 2004-04-08
ATE369451T1 (de) 2007-08-15

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