EP0423066A1 - Tuyère pour métier à tisser pneumatique - Google Patents

Tuyère pour métier à tisser pneumatique Download PDF

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Publication number
EP0423066A1
EP0423066A1 EP90810696A EP90810696A EP0423066A1 EP 0423066 A1 EP0423066 A1 EP 0423066A1 EP 90810696 A EP90810696 A EP 90810696A EP 90810696 A EP90810696 A EP 90810696A EP 0423066 A1 EP0423066 A1 EP 0423066A1
Authority
EP
European Patent Office
Prior art keywords
nozzle
cover body
opening area
nozzle according
opening
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Withdrawn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
EP90810696A
Other languages
German (de)
English (en)
Inventor
Paul Gunneman
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.)
Sulzer AG
Original Assignee
Sulzer AG
Gebrueder Sulzer 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 Sulzer AG, Gebrueder Sulzer AG filed Critical Sulzer AG
Publication of EP0423066A1 publication Critical patent/EP0423066A1/fr
Withdrawn legal-status Critical Current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 according to the preamble of claim 1 and an air jet machine with such nozzles.
  • the weft is inserted by means of a main nozzle, which accelerates the weft thread and blows it into the warp compartment, and usually additionally by means of a series of auxiliary nozzles, which are arranged over the entire width of the weave and which are used for the further transport of the weft thread through the Provide warp compartment.
  • auxiliary nozzles are also called relay nozzles.
  • the air output of the relay nozzle is controlled and matched to the flight of the thread. The result is a wandering flow field, through which the energy requirement for the compressed air is reduced.
  • Air jet looms are distinguished from other types of unprotected weaving machines, namely projectile and rapier weaving machines, by higher weft insertion performance and, in the weft insertion device, by less mechanically moving machine parts.
  • One disadvantage is an increased energy requirement; because the energy transfer from the compressed air to the weft to be conveyed is associated with great losses.
  • this object is achieved by the characterizing part of claim 1.
  • the advantage of the invention can be seen in the fact that with the adjustment device of the nozzle, with which the outflowing quantity of the fluid jet is changed, an additional adaptation parameter is created, which enables a reduction in the compressed air requirement.
  • the amount of air emitted per relay nozzle can be optimally adjusted depending on the location and with the same duration of the air emission.
  • a cover body is used to change the open area of the nozzle openings, which can be moved translationally along the longitudinal axis of the relay nozzle and / or rotatively around the longitudinal axis.
  • the cover body can be a body with no openings or a perforated body.
  • the perforation of the cover body which is formed from channels or hole-like openings, serves to enable free or partially free passage from the nozzle interior to the opening area, which preferably consists of several individual openings.
  • a hollow body can be mentioned as an example of a deformable body be, which consists entirely or partially of elastomeric material and which provides the change in shape by changing its internal pressure.
  • the adjusting device of the cover body allows it to be fixed in the position that is determined to be optimal. In order to be able to set such a position in a reproducible manner, it is advantageous to take constructive measures in the adjusting device by means of which the sealing body can be fixed in predetermined positions, for example by latching.
  • the cover body only fulfills its function sufficiently if it sufficiently seals the area of the opening area to be covered.
  • its cover surface When moving the cover body, its cover surface must slide over the surface to be covered and must not stand out. This can be achieved by geometric measures by orienting the surface to be covered so that it is parallel to the direction of displacement of the cover body. Another possibility is to press the cover body against the surface to be covered with a spring force exerted by the adjusting device. In this case, the area of the opening area may deviate somewhat from the parallelism to the direction of movement of the cover body.
  • the nozzle openings do not have to be circular, but they can also have a slot shape, for example. By partially covering the individual openings, their shape and size can be changed.
  • the energy requirement for the weft insertion can already decrease considerably if the degree of opening of the relay nozzles is fixed but optimally set. It is then sufficient to set the relay nozzles manually before changing the article.
  • a controllable adjusting device with which the relay nozzles can be set as a function of time during the operation of the weaving machine.
  • the relay nozzle must be inserted into the warp compartment for the weft insertion and pierce the lower warp thread sheet.
  • the warp threads can be stressed only slightly and the abrasion on the surface of the nozzle can be kept low.
  • the nozzle 1 With a screw part 2, which remains outside the warp compartment, the nozzle 1 is fastened to a base 3, which in turn is attached to the sley and via which compressed air is fed into the nozzle 1.
  • the opening area 4 is located in the head part 1a of the nozzle 1.
  • the head part 1 a is enlarged in FIG. 2 and is shown in a perspective view with a view of the opening area 4.
  • the opening area 4 consists of sieve-like individual openings 5.
  • Inside the nozzle 1 there are parts of the adjusting device, namely the cover body 6 and the holder 7. Fixing and guiding elements of the adjusting device are located in the base 3 and are not shown.
  • the holder 7, which can be moved in the longitudinal direction of the nozzle 1, is prestressed and exerts a spring force acting on the cover body 6 against the opening area 4.
  • the opening area 4 is wedge-shaped, the inner flank of the wedge running parallel to the longitudinal axis and thus parallel to the direction of movement of the cover body 6.
  • FIG. 4 shows in detail the cover body 6 belonging to the nozzle 1 of FIG. 2, shown as a view from the cavity side.
  • the lower double row of the individual openings 5 is closed by the edge region of the upper, toothed edge 6a of the cover body 6.
  • the cover body 6 is pressed onto the surface of the opening region 4 to be covered by the pretensioning of the holder 7 and the excess pressure acting within the nozzle.
  • a perforated cover body 8 is shown in FIG. 5 in the same view as for the exemplary embodiment in FIG.
  • FIG. 6 shows an embodiment with slot-shaped individual openings 10 which are partially covered by a compact cover body 6.
  • FIG. 7 shows a mandrel-shaped relay nozzle 11 with a conical head part 11a
  • the Opening area 14 has three vertical rows with individual openings 15.
  • the rotatable body shown in FIG. 7b which includes the cover body 12 and the holder tube 13, is located within the nozzle 11 shown in FIG.
  • the cover body 12 is an obliquely cut cone with a bore oriented obliquely to the cone axis.
  • a variable degree of opening of the opening region 14 can be realized by rotating the cover body 12 about the longitudinal axis of the nozzle 11.
  • the uppermost individual opening 150 is always open in the exemplary embodiment shown.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
EP90810696A 1989-10-13 1990-09-14 Tuyère pour métier à tisser pneumatique Withdrawn EP0423066A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH373589 1989-10-13
CH3735/89 1989-10-13

Publications (1)

Publication Number Publication Date
EP0423066A1 true EP0423066A1 (fr) 1991-04-17

Family

ID=4262378

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90810696A Withdrawn EP0423066A1 (fr) 1989-10-13 1990-09-14 Tuyère pour métier à tisser pneumatique

Country Status (2)

Country Link
EP (1) EP0423066A1 (fr)
JP (1) JPH03137249A (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0516587A1 (fr) * 1991-05-28 1992-12-02 Kabushiki Kaisha Toyoda Jidoshokki Seisakusho Tuyère auxiliaire dans un métier à jet d'air
WO2004038077A1 (fr) * 2002-10-23 2004-05-06 Picanol N.V., Naamloze Vennootschap Buse conçue pour supporter un fil de trame dans un metier a tisser
WO2021216105A1 (fr) * 2020-04-20 2021-10-28 Raines David Drew Système d'enfilage d'air de bande et procédés d'utilisation associés

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5263658B2 (ja) 2007-11-30 2013-08-14 東芝ライテック株式会社 照明装置
JP5157836B2 (ja) 2008-11-12 2013-03-06 東芝ライテック株式会社 照明器具
JP5708983B2 (ja) 2010-03-29 2015-04-30 東芝ライテック株式会社 照明装置
JP5747546B2 (ja) 2010-03-29 2015-07-15 東芝ライテック株式会社 照明装置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2212455A1 (fr) * 1972-12-30 1974-07-26 Scheffel Walter
EP0239137A1 (fr) * 1986-02-21 1987-09-30 Picanol N.V. Dispositif pour l'insertion de fils de trame dans la foule de métiers à tisser à jet d'air et tuyères ajustables utilisées dans ce but
DE3720492C1 (en) * 1987-06-20 1988-08-04 Dornier Gmbh Lindauer Air nozzle for weft-thread insertion in pneumatic weaving machines

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2212455A1 (fr) * 1972-12-30 1974-07-26 Scheffel Walter
EP0239137A1 (fr) * 1986-02-21 1987-09-30 Picanol N.V. Dispositif pour l'insertion de fils de trame dans la foule de métiers à tisser à jet d'air et tuyères ajustables utilisées dans ce but
DE3720492C1 (en) * 1987-06-20 1988-08-04 Dornier Gmbh Lindauer Air nozzle for weft-thread insertion in pneumatic weaving machines

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0516587A1 (fr) * 1991-05-28 1992-12-02 Kabushiki Kaisha Toyoda Jidoshokki Seisakusho Tuyère auxiliaire dans un métier à jet d'air
WO2004038077A1 (fr) * 2002-10-23 2004-05-06 Picanol N.V., Naamloze Vennootschap Buse conçue pour supporter un fil de trame dans un metier a tisser
BE1015155A3 (nl) * 2002-10-23 2004-10-05 Picanol Nv Spuitmondstuk voor het ondersteunen van een inslagdraad in een weefmachine.
WO2021216105A1 (fr) * 2020-04-20 2021-10-28 Raines David Drew Système d'enfilage d'air de bande et procédés d'utilisation associés
US11692311B2 (en) 2020-04-20 2023-07-04 David Drew Raines Web air threading system and methods of use

Also Published As

Publication number Publication date
JPH03137249A (ja) 1991-06-11

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