EP0019647B1 - Peigne à lamelles pour le guidage du jet d'air introducteur de trame dans un métier à tisser pneumatique - Google Patents

Peigne à lamelles pour le guidage du jet d'air introducteur de trame dans un métier à tisser pneumatique Download PDF

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Publication number
EP0019647B1
EP0019647B1 EP19790101733 EP79101733A EP0019647B1 EP 0019647 B1 EP0019647 B1 EP 0019647B1 EP 19790101733 EP19790101733 EP 19790101733 EP 79101733 A EP79101733 A EP 79101733A EP 0019647 B1 EP0019647 B1 EP 0019647B1
Authority
EP
European Patent Office
Prior art keywords
slot
weft
air stream
exit
air jet
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.)
Expired
Application number
EP19790101733
Other languages
German (de)
English (en)
Other versions
EP0019647A1 (fr
Inventor
Rolf Zimmermann
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
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 Gebrueder Sulzer AG filed Critical Gebrueder Sulzer AG
Priority to DE7979101733T priority Critical patent/DE2965272D1/de
Priority to EP19790101733 priority patent/EP0019647B1/fr
Priority to JP7264480A priority patent/JPS55163238A/ja
Publication of EP0019647A1 publication Critical patent/EP0019647A1/fr
Application granted granted Critical
Publication of EP0019647B1 publication Critical patent/EP0019647B1/fr
Expired 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 toothed element for guiding the weft insertion air jet in a jet weaving machine, with an opening for the passage of the air jet and a slot for the exit of the weft inserted during the following reed stop.
  • the air inlet jet tends to decentralize in the direction of the thread exit slot. This effect is repeated in the following tooth elements along the weft line, so that the weft material to be inserted (in the following, for example, a weft thread is assumed) can be deflected more and more from the center of the air jet opening of the individual tooth elements and thus from the weft line. The thread tip can then finally hit the boundary wall of a tooth element, which can interfere with the weft insertion.
  • the invention has for its object to provide a particularly improved in this regard tooth element.
  • the invention lies in a recess made in addition to the outlet slot in the air jet opening, which is arranged on the straight line running through the outlet slot and the firing line opposite the outlet slot.
  • a tooth element of a jet weaving machine is also known (DE-OS 19 17 780), which contains two air guide openings arranged next to one another, which are connected to one another via a threading slot. This serves to ensure that a weft thread inserted through the rear opening can pass into the front opening at the reed stop and can exit the tooth element from here.
  • the threading slot lying between the two openings is not arranged symmetrically with respect to the firing line (central axis) of the front opening, but at an arc distance of approximately 120 ° from it, that is to say in an asymmetrical arrangement. For this reason, there can be no centering of the weft thread in the sense mentioned above. Rather, this is deflected on one side towards the reed due to the asymmetrical slot arrangement.
  • the tooth element 1 contains an opening 2 for the passage of the air jet. Opening 2 is provided with a bevel 20 and has an essentially circular inner boundary 3. A radially directed slot 4 serves for the exit of a weft thread 28 (weft line 6) entered through opening 2 vertically to FIG. 1 during the reed stop following the entry.
  • a slot 5 is arranged diametrically opposite the thread exit slot 4, which in this example ends in the full material, that is to say not in a continuous manner like the exit slot 4.
  • the blind slit 5 ensures that the pressure of the air jet from the firing line 6 in the direction of the two slits 4 decreases uniformly. Thus there are 2 symmetrical pressure conditions in the opening. The air jet and thread can thus be easily held in the center or the line of fire 6 during the entry.
  • the toothed element 1 contains an upper, approximately semicircular part 7, which is fastened to the lower part 11 of the toothed element by means of two pins 8, while maintaining play 9.
  • the game 9 forms a pressure equalization in the opening 2 in a similar manner to the slot 5 according to FIGS. 1 and 2, with the difference that in this example the pressure equalization slot formed by the game 9 extends until the end of the Tooth element continues at 12, that is, formed continuously.
  • two pressure compensation slots 5 can be arranged in that area 29 of the inner boundary 3 of the air jet opening 2, which is opposite the thread outlet slot 4, each of which is at an arc distance of approximately 150 ° from the outlet slot 4 lie.
  • the slots 5 according to FIG. 9 are arranged symmetrically to the straight line 35, which is indicated by the dashed line in FIG. 9, and thus have the same arc distance from the latter. With this design too, the arrangement of the two slots 5 allows pressure equalization to be achieved on the side of the weft line 6 opposite the thread outlet slot 4, as a result of which the air jet and weft thread 28 can be centered during the entry.
  • the air jet opening 2 is formed in a V shape at 37.
  • the pressure compensation recess 5a is also V-shaped.
  • the width b at the beginning of the recess 5a is larger than the width a of the thread outlet slot 4.
  • the pressure compensation can thus be designed to be particularly effective.
  • the tooth elements 1 When attaching the tooth elements 1 in an air jet loom, the tooth elements are fastened according to FIGS. 11, 12 on the drawer 21 of the weaving machine, on which the reed 22 is also attached. 10, the tooth elements 1 protrude into the shed 27 formed by the warp threads 25, 26.
  • the weft thread 28 is inserted in the center 6 (weft line) of the opening 2 of the elements. During the entry, the thread 28 can be centered particularly well because each element has 1 pressure compensation slots 5.
  • one or more pressure compensation slots 5, 9 are provided in addition to the thread exit slot 4 in the air jet opening 2, specifically these pressure compensation slots are arranged opposite the thread exit slot 4, so that a symmetrical force effect on the weft line 6 or the weft thread 28 to be inserted arises and this is centered during the entry.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)

Claims (6)

1. Peigne à lamelles pour le guidage du jet d'air introducteur de trame dans un métier à tisser pneumatique, comportant un orifice pour le passage du jet d'air et une fente pour la sortie de la trame introduite lors de la butée suivante de peigne, caractérisé par un évidement (5, 9) réalisé en plus de la fente de sortie (4) dans l'orifice de jet d'air (2) et qui est situé en face de la fente de sortie (4) sur la droite passant par la fente de sortie (4) et la ligne de trame (6).
2. Peigne selon la revendication 1, caractérisé en ce que l'évidement d'équilibre de pression est une fente (5, 9) dirigée radialement.
3. Peigne selon les revendications 1 et 2, caractérisé en ce qu'une partie supérieure (7) du peigne à lamelles (1) est en forme de demi-cercle et est fixée à l'une de ses extrémités au moyen de broches (8) à la partie inférieure (11) du peigne à lamelles (1) en ménageant une fente d'équilibrage de pression (9) ouverte vers l'extérieur à l'extrémité postérieure.
4. Peigne à lamelles pour le guidage du jet d'air introducteur de trame dans un métier à tisser pneumatique, comportant un orifice pour le passage du jet d'air et une fente pour la sortie de la trame introduite lors de la butée suivante de peigne, caractérisé par au mois deux évidements (5, 9) disposés en plus de la fente de sortie (4) dans l'orifice de jet d'air (2), dans la zone (29) de l'orifice de jet d'air (2), se trouvant en face de la fente de sortie (4), les évidements étant disposés symétriquement par rapport à la droite passant par la fente de sortie (4) et la ligne de trame (6).
5. Peigne selon les revendications 1 ou 4, caractérisé en ce que l'évidement d'équilibre de pression (5a) est en forme de V.
6. Peigne selon la revendication 5, caractérisé en ce que la largeur (b) de l'évidement d'équilibre de pression (5a) est plus grande au début de l'évidement que la largeur (a) de la fente de sortie (4).
EP19790101733 1979-06-01 1979-06-01 Peigne à lamelles pour le guidage du jet d'air introducteur de trame dans un métier à tisser pneumatique Expired EP0019647B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE7979101733T DE2965272D1 (en) 1979-06-01 1979-06-01 Confining comb for guiding the weft-introducing air jet in a jet loom
EP19790101733 EP0019647B1 (fr) 1979-06-01 1979-06-01 Peigne à lamelles pour le guidage du jet d'air introducteur de trame dans un métier à tisser pneumatique
JP7264480A JPS55163238A (en) 1979-06-01 1980-05-30 Yarn guide teeth element for nozzle loom

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19790101733 EP0019647B1 (fr) 1979-06-01 1979-06-01 Peigne à lamelles pour le guidage du jet d'air introducteur de trame dans un métier à tisser pneumatique

Publications (2)

Publication Number Publication Date
EP0019647A1 EP0019647A1 (fr) 1980-12-10
EP0019647B1 true EP0019647B1 (fr) 1983-04-27

Family

ID=8186126

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19790101733 Expired EP0019647B1 (fr) 1979-06-01 1979-06-01 Peigne à lamelles pour le guidage du jet d'air introducteur de trame dans un métier à tisser pneumatique

Country Status (3)

Country Link
EP (1) EP0019647B1 (fr)
JP (1) JPS55163238A (fr)
DE (1) DE2965272D1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS609984U (ja) * 1983-06-27 1985-01-23 株式会社豊田自動織機製作所 流体噴射式織機における緯糸ガイド

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1917780A1 (de) * 1968-04-10 1969-11-06 Vyzk A Vyv Ustav Zd U Vseob St Aus Lamellen aufgebauter Fuehrungskanal an Duesenwebstuehlen
DE1932836A1 (de) * 1968-07-04 1970-01-15 Elitex Zd Y Tectilniho Strojir Luftkonfusor
CH586298A5 (en) * 1975-02-18 1977-03-31 Saurer Ag Adolph Weft-propelling gas jet guide - has telescopic parts displaceable to form a closed channel during weft insertion (OE 15.6.76)
JPS5361758A (en) * 1976-11-12 1978-06-02 Nissan Motor Guiding piece for air jet loom

Also Published As

Publication number Publication date
EP0019647A1 (fr) 1980-12-10
JPS55163238A (en) 1980-12-19
DE2965272D1 (en) 1983-06-01

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