EP0090877B1 - Projectile à griffes pour métiers à tisser - Google Patents

Projectile à griffes pour métiers à tisser Download PDF

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Publication number
EP0090877B1
EP0090877B1 EP82103862A EP82103862A EP0090877B1 EP 0090877 B1 EP0090877 B1 EP 0090877B1 EP 82103862 A EP82103862 A EP 82103862A EP 82103862 A EP82103862 A EP 82103862A EP 0090877 B1 EP0090877 B1 EP 0090877B1
Authority
EP
European Patent Office
Prior art keywords
projectile
weft thread
nozzle
clamping member
guide 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.)
Expired
Application number
EP82103862A
Other languages
German (de)
English (en)
Other versions
EP0090877A1 (fr
Inventor
Paul Lincke
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
Publication of EP0090877A1 publication Critical patent/EP0090877A1/fr
Application granted granted Critical
Publication of EP0090877B1 publication Critical patent/EP0090877B1/fr
Expired legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03J—AUXILIARY WEAVING APPARATUS; WEAVERS' TOOLS; SHUTTLES
    • D03J5/00—Shuttles
    • D03J5/06—Dummy shuttles; Gripper shuttles

Definitions

  • the invention relates to a gripper projectile for weaving machines, with a weft thread clamp formed by an axially movable, spring-loaded clamping body and a guide nozzle for the weft thread as a counter body for receiving the weft thread inserted through a donor nozzle, and furthermore with outflow openings for the air flowing in from the nozzle.
  • the invention has for its object to provide a gripper projectile of the type defined, which is suitable for cooperation with a projectile opening mechanism of conventional design, wherein a pin moves the legs of a thread clip apart.
  • the changes to be made to the projectile should be as few and simple as possible. No changes to the projectile opening mechanism should be necessary.
  • the position of the outflow openings for the air flowing in from the nozzle is unfavorable, so that turbulences occur in the cavity of the projectile, which act back into the guide nozzle and make it difficult to insert the weft end.
  • the carried flight settles in the projectile and impairs the proper functioning of the thread clamp.
  • a further object of the invention is therefore to take measures that no harmful turbulence can occur and that flight cannot be stopped. This object is achieved according to the invention by the features specified in the characterizing part of claim 1.
  • the advantage is achieved that the clamping body is centered in the guide nozzle during the closing movement, so that the weft thread is reliably clamped. Since the closing distance is very short, the distance covered by the projectile opener during the opening movement can also be short.
  • a gripper projectile 1 has a cavity 2 in which a guide nozzle 4 is fastened with screws 3 at the end of the projectile.
  • An axially movable clamping body 5 with a clamping cone 6 is also mounted in the cavity 2.
  • the clamping body 5 is pressed by a spring 7 into an outlet channel 8 of the guide nozzle 4, so that when the projectile is closed, the clamping cone 6 of the clamping body rests on the inner wall 9 of the outlet channel.
  • the clamping body 5 has an elongated opening 10 for receiving a projectile opener 11, which can be inserted through openings 12 and 13 in the walls 14 and 15 of the projectile.
  • the other walls 16 and 17 of the projectile are provided with air outlet openings 18 and 19, respectively, which are aligned with the outlet channel 8 of the guide nozzle 4.
  • the projectile is shown in the position just before launch, i.e. that is, the clamping body 5 is raised by the projectile opener 11 from the inner wall 9 of the outlet channel 8 of the guide nozzle 4.
  • a donor nozzle 22 blows an end 23 of a weft thread 24 into the guide nozzle 4 to such an extent that the weft thread end reaches the outlet channel 8.
  • the air blown in front of the donor nozzle 22 flows directly through the outlet channel 8 and the outlet openings 18 and 19 into the open. There can thus be no air turbulence and the flight carried along with the air flow immediately leaves the projectile.
  • the projectile opener 11 is withdrawn from the clamping body 5, which is now pressed by the spring 7 into the outlet channel 8 and thereby clamps the weft end 23.
  • the weft thread is now entered when the projectile is completed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
  • Auxiliary Weaving Apparatuses, Weavers' Tools, And Shuttles (AREA)

Claims (1)

  1. Projectile à griffes pour métiers à tisser, comportant une pince de fil de trame formée par un corps de serrage mobile axialement et chargé par ressort, et une buse de guidage destinée au fil de trame en tant que contre-corps pour serrer le fil de trame introduit par une buse de transmission, et en outre, des orifices de décharge destinés à l'air qui s'écoule de la buse, caractérisé en ce que le corps de serrage (5) présente un orifice (10) pour l'introduction d'un dispositif d'ouverture (11) de projectile qui ouvre la pince de fil (4-6) par soulèvement du corps de serrage, et en ce que les orifices de décharge (18, 19) s'alignent sur le canal (8) formé alors entre le corps de serrage et la buse de guidage (4).
EP82103862A 1982-04-07 1982-05-05 Projectile à griffes pour métiers à tisser Expired EP0090877B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH2144/82A CH654603A5 (de) 1982-04-07 1982-04-07 Greiferprojektil fuer webmaschinen.
CH2144/82 1982-04-07

Publications (2)

Publication Number Publication Date
EP0090877A1 EP0090877A1 (fr) 1983-10-12
EP0090877B1 true EP0090877B1 (fr) 1985-08-21

Family

ID=4226898

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82103862A Expired EP0090877B1 (fr) 1982-04-07 1982-05-05 Projectile à griffes pour métiers à tisser

Country Status (6)

Country Link
US (1) US4488579A (fr)
EP (1) EP0090877B1 (fr)
CH (1) CH654603A5 (fr)
CS (1) CS235318B2 (fr)
DE (1) DE3265573D1 (fr)
SU (1) SU1243630A3 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3832386A1 (de) * 1987-11-20 1989-06-01 Sulzer Ag Projektilwebmaschine mit projektiloeffner und projektilheber
US7266010B2 (en) * 2005-11-28 2007-09-04 Synopsys, Inc. Compact static memory cell with non-volatile storage capability

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH193043A (de) * 1936-08-01 1937-09-30 Tefag Textil Finanz Ag Vorrichtung zur Übergabe des Schussfadens.
CH435141A (de) * 1965-01-22 1967-04-30 Zangs Ag Maschf Webmaschine mit Greiferschützen
US3412763A (en) * 1966-06-07 1968-11-26 Crompton & Knowles Corp Pneumatic loom
US4207926A (en) * 1979-03-12 1980-06-17 Crompton & Knowles Corporation Loom projectile

Also Published As

Publication number Publication date
CH654603A5 (de) 1986-02-28
US4488579A (en) 1984-12-18
EP0090877A1 (fr) 1983-10-12
CS235318B2 (en) 1985-05-15
SU1243630A3 (ru) 1986-07-07
DE3265573D1 (en) 1985-09-26

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