EP0308754A1 - Düse zur Erzeugung eines Fluidstrahles - Google Patents

Düse zur Erzeugung eines Fluidstrahles Download PDF

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Publication number
EP0308754A1
EP0308754A1 EP88114839A EP88114839A EP0308754A1 EP 0308754 A1 EP0308754 A1 EP 0308754A1 EP 88114839 A EP88114839 A EP 88114839A EP 88114839 A EP88114839 A EP 88114839A EP 0308754 A1 EP0308754 A1 EP 0308754A1
Authority
EP
European Patent Office
Prior art keywords
nozzle
bore
fluid jet
jet
bores
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Withdrawn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
EP88114839A
Other languages
German (de)
English (en)
French (fr)
Inventor
Hermann Josef Foery
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0308754A1 publication Critical patent/EP0308754A1/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Withdrawn legal-status Critical Current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
    • D03D47/3006—Construction of the nozzles
    • D03D47/302—Auxiliary nozzles

Definitions

  • the invention relates to a nozzle, in particular for a jet weaving machine for inserting the weft thread through the weaving shed of the weaving machine, consisting of a nozzle body and at least one nozzle bore arranged therein for generating a fluid jet.
  • nozzles for generating a fluid jet are known.
  • the term fluid used here means both liquids and gases. Such nozzles are used in various fields of technology.
  • weft guides on the sley next to the reed are provided with recesses that form a continuous channel.
  • the weft guides lying side by side form one Weft guide device, through which the weft thread is introduced into the shed by a fluid jet generated by a main nozzle, for example compressed air.
  • nozzles arranged on the weft guides are used to introduce the compressed air, the nozzle bores or nozzle bores of the weft guide are directed in the direction of the weft insertion.
  • Such nozzles are known in various designs.
  • jet nozzles arranged in the slats for the formation of a weft thread channel are used, the nozzle bore of which is replaced by a larger number of smaller, adjacent holes.
  • the nozzle bore is also replaced by a number of individual bores.
  • these are produced by rod-shaped elements, for example tubes, of which the number of rod-shaped elements required to form a nozzle is combined and from which disc-shaped sections are separated and inserted into the fins.
  • the material of the nozzle body in which the nozzle bore is arranged consists of a material from the material group ruby, ceramic, hard metal and steel of high hardness. This means that the use of hard materials and smooth bore wall causes slight wear on the nozzle bore and the smooth inner wall, the roughness of which corresponds to that of a polished wall, prevents turbulence.
  • a nozzle with a nozzle bore machined into the nozzle body can be assigned means concentrating the emerging fluid jet, which are designed as circular sector-shaped bulges recessed on the circumference of the cylindrical nozzle bore, the axis of which - viewed in the direction of the emerging fluid jet - against the axis of the cylindrical Nozzle is directed. It is thereby achieved that a concentration of the emerging fluid jet occurs, that is to say in the sense of focusing.
  • the nozzle shown in Figure 1 has a nozzle body 1, in which a nozzle bore 2 is incorporated.
  • the nozzle bore 2 can be regarded as a central cylindrical bore 3 with an axis 4, on the circumference of which bulges 5 are arranged.
  • the bulges 5 can have a circular sector shape or another shape. It is essential that the axis 6 of the bulges 5 does not run parallel to the axis 4 of the central bore, but is directed against it, as can be seen from FIG. 1, in which the inner edge is shown as a dashed circle sector, the center of which is from the axis 4 is further away than the center of the outer circle sector.
  • the nozzle 10 shown in FIG. 2 represents an embodiment for jet weaving machines, by means of which the insertion of the weft thread into the shed is supported.
  • the nozzle 10 has, see FIG. 3, a nozzle bore 2 corresponding to the nozzle bore 2 of the nozzle according to FIG. 1.
  • the nozzle body 1 is inserted into a nozzle holder 14, which can be an integral part of the nozzle 10 or is inserted separately into the nozzle 10.
  • the nozzle holder 14 represents the upper part of a nozzle shaft 16, which on the the end opposite the nozzle holder merges into a nozzle foot 17.
  • the nozzle base 17 has a constriction 18 with a smaller diameter than that of the nozzle base 17.
  • the part adjoining the constriction 18 forms a frustoconical end 19 of the nozzle 10.
  • the nozzle holder 14 is inclined relative to the nozzle axis 21, the inclination depending on the local conditions of the weft guide of the weaving machine.
  • the nozzle holder 14 can therefore be inclined differently or also parallel to the axis 21.
  • the nozzle according to FIG. 1 is made from a material of high hardness, for example from ruby, hard metal, or another material of high hardness, for example ceramic or thermally treated steel.
  • the nozzle body 1 is inserted into a bore in the nozzle holder 14, for example with a press fit.
  • the nozzle bore 2 can be designed with an inner wall of lower roughness.
  • FIGS. 4 and 5 show that the shape of the nozzle bore according to FIG. 1 resulted in a concentration of the fluid jet and thus better utilization of the pressure energy.
  • the nozzle shown in these figures has a central nozzle bore 13 and individual bores 12 grouped around it. This arrangement thus differs from that according to FIG. 1 in that here the individual bores 12 have no connection with the central bore 13.
  • the nozzle bores 12, 13 can be arranged in a single nozzle body 1. In FIGS. 4 and 5, however, an embodiment is shown in which the nozzle bores 12, 13 are incorporated into separate nozzle bodies 20 shaped as sleeves. These sleeves 20 are inserted into the bores 7 of the nozzle holder 14.
  • the axes of the nozzle bores 12 are also inclined with respect to the axis 15 of the central bore 13 and, as tests have shown, the same beneficial effect results in the form of a concentration of the fluid jet.
  • the individual nozzles 12, 13 can also be incorporated into a single nozzle body, the peripheral individual nozzles 12 likewise being designed with axes 23 inclined against the central axis 15.
  • the peripheral bores of the nozzle holder 14 can be made with axes inclined against the central axis, the sleeves 20 then being coaxial with respect to the inner diameter of the nozzle bore and the outer cylinder of the sleeve.
  • the nozzle body 20 of the individual bores 12, 13 are made of the same material as the nozzle body 1 of the nozzle according to FIG. 1.
  • the two nozzles described have the advantage that a concentration of the fluid jet and thus better utilization of the energy is achieved.
  • the same machining procedures can be used to drill holes 2, 12, 13 as are used to drill holes in ruby.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
  • Nozzles (AREA)
EP88114839A 1987-09-21 1988-09-10 Düse zur Erzeugung eines Fluidstrahles Withdrawn EP0308754A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH363487A CH675839A5 (enrdf_load_stackoverflow) 1987-09-21 1987-09-21
CH3634/87 1987-09-21

Publications (1)

Publication Number Publication Date
EP0308754A1 true EP0308754A1 (de) 1989-03-29

Family

ID=4260199

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88114839A Withdrawn EP0308754A1 (de) 1987-09-21 1988-09-10 Düse zur Erzeugung eines Fluidstrahles

Country Status (3)

Country Link
EP (1) EP0308754A1 (enrdf_load_stackoverflow)
JP (1) JPH0197237A (enrdf_load_stackoverflow)
CH (1) CH675839A5 (enrdf_load_stackoverflow)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0355164A4 (en) * 1987-11-11 1990-04-10 Nippon Tungsten AUXILIARY NOZZLE FOR LIQUID JET TYPE AND MANUFACTURING.
EP0516587A1 (en) * 1991-05-28 1992-12-02 Kabushiki Kaisha Toyoda Jidoshokki Seisakusho Auxiliary nozzle in an air jet loom
EP1614785A1 (en) * 2004-07-05 2006-01-11 F.I.R.S.T. S.p.A. Secondary nozzle for air-jet weaving looms

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2522335A1 (de) * 1974-05-21 1975-12-04 Rueti Te Strake Bv Strahlduese zum transportieren eines schussfadens durch ein webfach mittels eines stroemenden transportmittels
GB2070650A (en) * 1980-02-11 1981-09-09 Rueti Te Strake Bv Nozzle for shuttleless loom
BE892832A (nl) * 1982-04-14 1982-10-14 Picanol Nv Hulp- of bijblazer voor textielmachine.
DE3204363A1 (de) * 1982-02-09 1983-08-11 Guenne Webmaschf Gmbh Verfahren und strahlduese zum transportieren eines schussfadens durch ein webfach mittels druckluft
BE903100A (nl) * 1985-08-22 1986-02-24 Picanol Nv Hulpblazer voor weefmachines.
CH656905A5 (en) * 1982-11-30 1986-07-31 Sulzer Ag Blowing nozzle for pneumatic weaving machines

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2522335A1 (de) * 1974-05-21 1975-12-04 Rueti Te Strake Bv Strahlduese zum transportieren eines schussfadens durch ein webfach mittels eines stroemenden transportmittels
GB2070650A (en) * 1980-02-11 1981-09-09 Rueti Te Strake Bv Nozzle for shuttleless loom
DE3204363A1 (de) * 1982-02-09 1983-08-11 Guenne Webmaschf Gmbh Verfahren und strahlduese zum transportieren eines schussfadens durch ein webfach mittels druckluft
BE892832A (nl) * 1982-04-14 1982-10-14 Picanol Nv Hulp- of bijblazer voor textielmachine.
CH656905A5 (en) * 1982-11-30 1986-07-31 Sulzer Ag Blowing nozzle for pneumatic weaving machines
BE903100A (nl) * 1985-08-22 1986-02-24 Picanol Nv Hulpblazer voor weefmachines.

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
RESEARCH DISCLOSURE, Nr. 229, Mai 1983, Seite 177, Zusammenfassung Nr. 22905, Havant Hampshire, GB; "Improved air-jet nozzles" *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0355164A4 (en) * 1987-11-11 1990-04-10 Nippon Tungsten AUXILIARY NOZZLE FOR LIQUID JET TYPE AND MANUFACTURING.
EP0516587A1 (en) * 1991-05-28 1992-12-02 Kabushiki Kaisha Toyoda Jidoshokki Seisakusho Auxiliary nozzle in an air jet loom
EP1614785A1 (en) * 2004-07-05 2006-01-11 F.I.R.S.T. S.p.A. Secondary nozzle for air-jet weaving looms

Also Published As

Publication number Publication date
CH675839A5 (enrdf_load_stackoverflow) 1990-11-15
JPH0197237A (ja) 1989-04-14

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