EP0968327A1 - Auxiliary blow nozzle for an air jet weaving machine - Google Patents
Auxiliary blow nozzle for an air jet weaving machineInfo
- Publication number
- EP0968327A1 EP0968327A1 EP98965080A EP98965080A EP0968327A1 EP 0968327 A1 EP0968327 A1 EP 0968327A1 EP 98965080 A EP98965080 A EP 98965080A EP 98965080 A EP98965080 A EP 98965080A EP 0968327 A1 EP0968327 A1 EP 0968327A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- radius
- angle
- auxiliary blowing
- outer circumference
- blowing nozzle
- 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
Links
- 238000009941 weaving Methods 0.000 title claims abstract description 7
- 238000007664 blowing Methods 0.000 claims description 28
- 230000007704 transition Effects 0.000 claims description 3
- 235000014676 Phragmites communis Nutrition 0.000 description 3
- 238000003780 insertion Methods 0.000 description 3
- 230000037431 insertion Effects 0.000 description 3
- 238000007654 immersion Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
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
- D03D47/302—Auxiliary nozzles
Definitions
- the invention relates to an auxiliary blowing nozzle for an air jet weaving machine with an air flow channel having an inlet opening, with an outlet opening in the end region of the nozzle with a longitudinal center axis angled with respect to the longitudinal center axis of the air flow channel, with at least one length section extending from the end area and running in the direction of the inlet opening with one roughly elliptical outer circumference, with an envelope curve which partially encompasses the longitudinal center axis of the outlet opening and describes the free end of the end region and has a radius R, and the envelope curve is rounded to adjacent surfaces.
- Such an auxiliary blowing nozzle is known from US Pat. No. 4,987,930.
- Auxiliary blowing nozzles with the features known above are used in air jet weaving machines.
- the longitudinal axis of the outlet opening for the air flow is at right angles to the course of the envelope of the free end of the auxiliary blowing nozzle or at right angles to the longitudinal center axis of the approximately elliptical outer circumference of the nozzle body.
- a design means that, for optimal effectiveness of the air flow on the weft thread to be inserted into an insertion channel of a reed, the longitudinal center axis of the outlet opening is rotated at an angle of a few degrees in the horizontal to the warp threads of a warp or in some angular degrees Entry channel of the reed is aligned.
- auxiliary blowing nozzles which also have a structural design according to the preamble of claim 1. With the structurally determined angled longitudinal center axis of the outlet opening with respect to the course of the envelope formed by the free end of the nozzle body or with respect to the
- the longitudinal axis of the approximately elliptical cross-section of the nozzle body which here is congruent to the envelope curve, is to be achieved, a) an optimal effectiveness of the air flow on the weft thread and b) an optimal adaptation of the outer contour of the nozzle body end region to the course of the warp threads.
- the disadvantage here is that the longitudinal center axis of the outlet opening lies at an angle of more than 90 ° to the longitudinal axis of the elliptical shape of the nozzle body end section. This means that the outlet opening is more difficult to manufacture than an outlet opening aligned at right angles to the longitudinal axis of the elliptical outer circumference.
- auxiliary blowing nozzle in particular for air-jet weaving machines, which, when immersed in the warp, enables the warp to be divided symmetrically and protects the structure of the warp threads.
- the inventive design of the end region of the auxiliary blowing nozzle advantageously ensures that the group of warp threads affected by the immersion of the auxiliary blowing nozzle in the warp is symmetrically divided without the structure of the relevant warp threads being impaired in any way.
- FIG. 1 shows the auxiliary blowing nozzle on a scale of approximately 3: 1 in a side view
- Figure 2 shows the end region of the auxiliary blowing nozzle.
- Figure 1 according to view A,
- Figure 3 shows the auxiliary blowing nozzle.
- Figure 2 in plan view and
- Figure 4 shows the end region of the auxiliary blowing nozzle.
- Figure 2 according to view B.
- the auxiliary blowing nozzle 1 consists of a tubular body 2 with a first length section 3, e.g. circular cross-section, with an air inlet opening 2a, and with a second length section 3a, which has an approximately elliptical cross-section.
- the outlet opening 2b is machined into the wall of the elliptical cross section.
- FIGS. 2 to 4 show the end section la of the auxiliary blowing nozzle 1 according to view A.
- the free end 1b of the end section la is, as is known per se, described by an envelope 5 with a radius R.
- the radius R is ⁇ 3700 ⁇ m.
- the envelope 5 extends at an angle> 3 degrees with respect to the longitudinal axis 4a of the approximately elliptical cross-section, see also FIG. 3, that a radius R 3 of approximately 1000 ⁇ m is the radius R, the envelope connects to the outer circumference 4, that starting from the envelope 5, see also FIGS. 2 to 4, a first surface 6 and a second surface 7 designed in the manner of a roof are present on both sides and the two
- outer circumference 4 sloping, arcuate surface section 6a, 7a, the transitions to the adjacent surfaces 6,7 and the outer circumference 4 are rounded.
- the surfaces 6, 7 can be slightly curved outwards or they can be flat.
- the curvature can have a radius R 4 that is less than 1000 ⁇ m.
- a large number of the auxiliary blowing nozzles designed according to the invention is on the blade bar carrying a reed with a weft insertion channel, one not shown here
- Air jet loom arranged.
- the arrangement is provided according to the invention in such a way that the envelope 5 and the surfaces 6, 7 are positioned exactly parallel to the warp threads of a warp and the surface sections 6a, 7a run almost parallel to the warp threads and the longitudinal axis 2b 'of the outlet opening 2b in one Angle> 3 degrees to the longitudinal axis of the weft insertion channel.
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Looms (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19751354 | 1997-11-20 | ||
DE19751354A DE19751354C1 (en) | 1997-11-20 | 1997-11-20 | Auxiliary blowing nozzle for an air jet loom |
PCT/DE1998/003412 WO1999027171A1 (en) | 1997-11-20 | 1998-11-18 | Auxiliary blow nozzle for an air jet weaving machine |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0968327A1 true EP0968327A1 (en) | 2000-01-05 |
EP0968327B1 EP0968327B1 (en) | 2001-05-30 |
Family
ID=7849251
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98965080A Expired - Lifetime EP0968327B1 (en) | 1997-11-20 | 1998-11-18 | Auxiliary blow nozzle for an air jet weaving machine |
Country Status (6)
Country | Link |
---|---|
US (1) | US6138719A (en) |
EP (1) | EP0968327B1 (en) |
JP (1) | JP2000508391A (en) |
AT (1) | ATE201728T1 (en) |
DE (2) | DE19751354C1 (en) |
WO (1) | WO1999027171A1 (en) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE1012608A3 (en) * | 1999-04-14 | 2001-01-09 | Picanol Nv | Nozzle for a weaving machine. |
BE1015155A3 (en) * | 2002-10-23 | 2004-10-05 | Picanol Nv | SYRINGE nozzle for supporting a weft thread into a weaving machine. |
BE1015261A3 (en) * | 2002-12-19 | 2004-12-07 | Picanol Nv | SPRAY NOZZLE SUPPORTING a weft thread in a weaving machine. |
EP3640382B1 (en) * | 2018-10-16 | 2021-07-07 | Tsudakoma Kogyo Kabushiki Kaisha | Sub-nozzle for air jet loom |
JP7311297B2 (en) * | 2018-10-16 | 2023-07-19 | 津田駒工業株式会社 | Sub-nozzle of air jet loom |
US11214450B1 (en) * | 2021-03-11 | 2022-01-04 | Cciip Llc | Method of proofing an innerduct/microduct and proofing manifold |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL7406857A (en) * | 1974-05-21 | 1975-11-25 | Rueti Te Strake Bv | HOLLOW NEEDLE-SHAPED NOZZLE WITH A NOZZLE OPENED NEAR THE TIP, IN THE SIDEWALL. |
CH610222A5 (en) * | 1976-09-07 | 1979-04-12 | Rueti Ag Maschf | Process for producing a nozzle and use of the nozzle |
CH650035A5 (en) * | 1980-11-28 | 1985-06-28 | Sulzer Ag | Auxiliary blowing nozzle for an air-jet weaving machine |
CH656905A5 (en) * | 1982-11-30 | 1986-07-31 | Sulzer Ag | Blowing nozzle for pneumatic weaving machines |
EP0145824B1 (en) * | 1983-12-09 | 1987-03-04 | GebràDer Sulzer Aktiengesellschaft | Auxiliary nozzle for an air jet loom |
JPH0665777B2 (en) * | 1987-11-11 | 1994-08-24 | 日本タングステン株式会社 | Manufacturing method of auxiliary nozzle for air jet loom |
IT1230003B (en) * | 1989-04-21 | 1991-09-20 | Somet Soc Mec Tessile | NOZZLE MANUFACTURING PROCEDURE FOR AIR WEAVING FRAME. |
JPH07189078A (en) * | 1993-12-28 | 1995-07-25 | Nippon Tungsten Co Ltd | Sub nozzle of air jet type weaving machine |
US5857606A (en) * | 1997-11-12 | 1999-01-12 | Tseng; Ching-Kun | Ultrahigh speed suction gun |
DE29720595U1 (en) * | 1997-11-20 | 1998-02-05 | Dornier Gmbh Lindauer | Auxiliary blowing nozzle, in particular for an air jet loom |
-
1997
- 1997-11-20 DE DE19751354A patent/DE19751354C1/en not_active Expired - Fee Related
-
1998
- 1998-11-18 DE DE59800797T patent/DE59800797D1/en not_active Expired - Fee Related
- 1998-11-18 US US09/341,743 patent/US6138719A/en not_active Expired - Fee Related
- 1998-11-18 JP JP11527368A patent/JP2000508391A/en active Pending
- 1998-11-18 WO PCT/DE1998/003412 patent/WO1999027171A1/en active IP Right Grant
- 1998-11-18 AT AT98965080T patent/ATE201728T1/en not_active IP Right Cessation
- 1998-11-18 EP EP98965080A patent/EP0968327B1/en not_active Expired - Lifetime
Non-Patent Citations (1)
Title |
---|
See references of WO9927171A1 * |
Also Published As
Publication number | Publication date |
---|---|
EP0968327B1 (en) | 2001-05-30 |
DE59800797D1 (en) | 2001-07-05 |
DE19751354C1 (en) | 1999-06-17 |
JP2000508391A (en) | 2000-07-04 |
US6138719A (en) | 2000-10-31 |
ATE201728T1 (en) | 2001-06-15 |
WO1999027171A1 (en) | 1999-06-03 |
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