EP0199834B1 - Navette à pince pour métier à tisser - Google Patents

Navette à pince pour métier à tisser Download PDF

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Publication number
EP0199834B1
EP0199834B1 EP85105182A EP85105182A EP0199834B1 EP 0199834 B1 EP0199834 B1 EP 0199834B1 EP 85105182 A EP85105182 A EP 85105182A EP 85105182 A EP85105182 A EP 85105182A EP 0199834 B1 EP0199834 B1 EP 0199834B1
Authority
EP
European Patent Office
Prior art keywords
projectile
gripper
protuberances
casing
insides
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
EP85105182A
Other languages
German (de)
English (en)
Other versions
EP0199834A1 (fr
Inventor
Erwin Pfarrwaller
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 DE8585105182T priority Critical patent/DE3567231D1/de
Priority to EP85105182A priority patent/EP0199834B1/fr
Priority to US06/849,686 priority patent/US4655260A/en
Priority to SU864027287A priority patent/SU1542421A3/ru
Publication of EP0199834A1 publication Critical patent/EP0199834A1/fr
Application granted granted Critical
Publication of EP0199834B1 publication Critical patent/EP0199834B1/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 rapier projectile for weaving machines with a weft thread supply remaining outside the shed, with an elongated projectile housing which contains an installation space for a weft thread clamp which has a yoke connected to the front end of the projectile housing and two of these extending towards the rear end of the projectile housing. has movable clamp arms, the projectile housing being provided on its inner sides with recesses which locally expand the installation space.
  • the cutouts form a coherent interior in a length section which extends essentially over the middle third of the length of the projectile housing and has an essentially constant cross section over this length section, which is larger than the cross section of the weft thread clip (DE-OS -3,234,765).
  • the wall parts of the known projectile housing surrounding this interior are designed with wall thicknesses which ensure sufficient flexural rigidity of the projectile housing, in particular when the projectile is braked after the weft insertion, while at the same time aiming for the projectile to be as light as possible.
  • the web-like elevations arranged according to the invention permit, at least in the central longitudinal section of the projectile housing, an embodiment with wall thicknesses of the projectile housing which are substantially reduced compared to previous versions and thus a corresponding reduction in the mass of the projectile to be accelerated and braked.
  • the service life of the brake linings in the catching gear can be significantly increased compared to previous designs, in particular in the case of weaving machines with high weft insertion rates, in which the projectiles enter the catching gear with a correspondingly high loading rate and correspondingly high entry speed.
  • Particular embodiments of the invention are specified in the dependent claims.
  • the elevations can each be formed by a longitudinal rib running in the longitudinal direction of the projectile housing over the installation space.
  • This version allows z. B. the use of sections of relatively inexpensive, such as by drawing presses, hollow profile rods that can be produced for producing the correspondingly profiled parts of the projectile housing.
  • the housing parts In the case of a projectile with a projectile housing composed of two housing parts, the housing parts being able to be placed against one another with separating surfaces running parallel to the longitudinal extent of the projectile housing, the housing parts can be connected to one another in the region of the separating surfaces by a non-releasable connection.
  • the projectile housing 2 contains a tubular sleeve which is open at the rear and which can have a flat rectangular or - according to the illustrated embodiments - octagonal cross section.
  • the installation space 3 for the weft thread clamp 4 is essentially delimited by two wide side walls 13 and two narrow side walls 14, each of which has essentially the same wall thicknesses in the two end sections 2a and 2c of the projectile housing 2.
  • the yoke 8 is firmly connected to the wide side walls 13 and possibly to the narrow side walls 14, while the free ends of the clamp arms 6 and 7, as shown in FIG. 4, are at a distance from the narrow side walls 14 are slidably guided along the wide side walls 13.
  • the side walls 13 and 14 are provided with groove-like depressions 15 which run around the inner circumference of the projectile housing 2 and which are provided by corresponding, over the inner circumference of the projectile housing 2 annular circumferential web-like elevations 16 and 17 are separated from one another.
  • the end faces of the elevations 16 and 17 facing the weft clamp 4 and the corresponding parts of the inner surfaces of the side wall 13 and 14 in question, which extend over the two end sections 2a and 2c of the projectile housing 2 can lie in one plane.
  • a transverse rib 20 can be provided on the inside of a projectile housing 2 ', which surrounds the installation space 3 essentially in a helical manner and on which corresponding elevations 16' and 17 ' are trained. 2 and 5, the weft thread clip 4 is partially omitted for the sake of simplicity. 5, the elevations 16 'running along the upper side wall 13 are indicated by dash-dotted lines.
  • the projectile housings 2 and 2 'shown in one piece in FIGS. 1-5 can also be formed in several parts.
  • a profile housing 2 ′′ can be composed of two housing parts 22 and 23 that can be produced individually, for example by the precision casting or drop forging method.
  • the housing parts 22 and 23, which can be of identical design, are identical can be placed against one another with parting surfaces 24 running parallel to the longitudinal extent of the projectile housing 2 "and each have the corresponding depressions delimited by elevations 16 and 17.
  • the two housing parts 22 and 23 can along the separating surfaces 24 through a non-detachable extension 25, z. B. connected by welding, soldering or gluing.
  • the gripper projectile according to FIGS. 7 and 8 has a projectile housing 30, the wide side walls 13 of which in the middle longitudinal section 2b are provided on the inside with groove-like depressions 31 and 33 running parallel to the longitudinal extension of the projectile housing 30. These are separated from one another by web-like elevations 32, each of which is formed by a longitudinal rib running along one of the clamp arms 6 and 7 and abutting thereon. As can further be seen from FIG.
  • the elevations 32 and the depressions 31 and 33 can be formed on a sleeve 34 which extends essentially over the middle section 2b of the projectile housing 30 and which with the head part 10 and one over the end section 2c extending second sleeve 36 is each connected by a non-releasable connection 35.
  • a sleeve 34 which extends essentially over the middle section 2b of the projectile housing 30 and which with the head part 10 and one over the end section 2c extending second sleeve 36 is each connected by a non-releasable connection 35.
  • the two sleeves 34 and 36, optionally together with the head part 10 can be made in one piece.
  • the sleeve 34 provided with the depressions 31, 33 and elevations 32 can extend essentially over the entire length of the projectile and is directly connected to the weft thread clip 4 and at the front end by a head part 10 ' to be introverted.
  • the weft thread clamp 4 can have a yoke 8 'on which two strip-like support parts 38 for the sleeve 34 can be formed, which can be inserted into the recesses 31.
  • the clamp arms 6, 7 can protrude into the recesses 31, z. B. compared to the embodiment according to FIG. 7, widened clamping jaws 9 'can be provided, through which in particular thick and / or weft threads consisting of several fibers can be better detected.

Landscapes

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

Claims (7)

1. Projectile à pince pour métiers à tisser avec, à l'extérieur de la foule, une réserve de fil de trame à demeure, avec un boîtier allongé (2, 2', 2", 30) pour projectile qui renferme un logement (3) pour une pince (4) de fil de trame, laquelle présente une culasse (8) reliée à l'extrémité avant du boîtier (2, 2', 2", 30) de projectile et deux bras de pince mobiles (6, 7) s'étendant à partir de celle-ci vers l'extrémité arrière du boîtier de projectile, des évidements étant prévus sur les faces intérieures du boîtier (2, 2', 2", 30) de projectile et élargissant localement le logement (3), caractérisé en ce qu'au moins dans la zone du tiers médiant de la longueur du boîtier (2, 2', 2", 30) du projectile, au moins les évidements prévus dans les faces intérieures (parois latérales 13) s'étendant le long des deux bras (6, 7) de la pince sont formés de cavités (15, 31, 33) en forme de rainures, disposées les unes à côté des autres, qui sont séparées les unes des autres par des saillies (16, 16', 32) en forme de nervures s'élevant vers le logement (3), et en ce que, sur chacune de ces faces intérieures (parois latérales 13), au moins une des saillies (16, 16', 32) présente une surface d'appui définie destinée à coopérer avec au moins l'un des bras (6, 7) de pince.
2. Projectile selon la revendication 1, caractérisé en ce que chacune des saillies (32) est formée d'une nervure longitudinale s'étendant sur le logement (3), dans la direction longitudinale du boîtier (30) de projectile.
3. Projectile selon la revendication 1, caractérisé en ce que chacune des saillies (16) est constituée d'un tronçon d'une nervure transversale (18) en forme d'anneau, entourant le logement (3).
4. Projectile selon la revendication 1, caractérisé en ce que chacune des saillies (16') est constituée d'un tronçon d'une nervure transversale (20) entourant de façon essentiellement hélicoîdale le logement (3).
5. Projectile selon l'une des revendications 1 à 4, caractérisé en ce que les cavités (15, 31, 33) et les saillies (16, 16', 32) sont formées sur un manchon (34) pouvant être relié à une partie de tête (10) du projectile.
6. Projectile selon l'une des revendications 1 à 4, comportant un boîtier (2") de projectile composé de deux parties (22, 23) de boîtier, les parties de boîtier (22, 23) pouvant être montées l'une sur l'autre au moyen de surfaces (24) de séparation s'étendant parallèlement à l'étendue longitudinale du boîtier (2") de projectile, caractérisé en ce que les parties (22, 23) du boîtier sont reliées entre elles, dans la zone des surfaces (24) de séparation, par une liaison inamovible (25).
7. Projectile selon l'une des revendications précédentes, caractérisé en ce que, sur chacune des faces intérieures (parois latérales 13) du boîtier (30) de projectile, s'étendant le long des deux bras de pince (6, 7), s'étend au moins un tronçon de l'une des cavités (31) au-dessus de deux mâchoires (9') de serrage formées sur les bras (6, 1) de pince, et en ce que ces mâchoires (9') de serrage sont formées chacune d'une partie extrême élargie, s'élevant dans les cavités (31), du bras de pince correspondant (6 ou 7).
EP85105182A 1985-04-27 1985-04-27 Navette à pince pour métier à tisser Expired EP0199834B1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DE8585105182T DE3567231D1 (en) 1985-04-27 1985-04-27 Gripper shuttle for looms
EP85105182A EP0199834B1 (fr) 1985-04-27 1985-04-27 Navette à pince pour métier à tisser
US06/849,686 US4655260A (en) 1985-04-27 1986-04-09 Shuttle projectile for a weaving machine
SU864027287A SU1542421A3 (ru) 1985-04-27 1986-04-17 Микропрокладчик дл ткацкого станка с питанием уточной нитью с неподвижной бобины

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP85105182A EP0199834B1 (fr) 1985-04-27 1985-04-27 Navette à pince pour métier à tisser

Publications (2)

Publication Number Publication Date
EP0199834A1 EP0199834A1 (fr) 1986-11-05
EP0199834B1 true EP0199834B1 (fr) 1989-01-04

Family

ID=8193471

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85105182A Expired EP0199834B1 (fr) 1985-04-27 1985-04-27 Navette à pince pour métier à tisser

Country Status (4)

Country Link
US (1) US4655260A (fr)
EP (1) EP0199834B1 (fr)
DE (1) DE3567231D1 (fr)
SU (1) SU1542421A3 (fr)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1545120A (fr) * 1966-11-22 1968-11-08 Sulzer Ag Navette à pince comportant une partie en matière plastique pour métier à tisser
CH552092A (de) * 1972-05-26 1974-07-31 Sulzer Ag Greiferschuetzen fuer den eintrag von schussfaeden bei webmaschinen.
CH610952A5 (fr) * 1976-08-24 1979-05-15 Sulzer Ag
CH657644A5 (de) * 1982-09-14 1986-09-15 Sulzer Ag Greiferprojektil fuer webmaschinen.

Also Published As

Publication number Publication date
US4655260A (en) 1987-04-07
DE3567231D1 (en) 1989-02-09
SU1542421A3 (ru) 1990-02-07
EP0199834A1 (fr) 1986-11-05

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