EP0185917B1 - Métier à tisser à projectiles - Google Patents

Métier à tisser à projectiles Download PDF

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Publication number
EP0185917B1
EP0185917B1 EP85114606A EP85114606A EP0185917B1 EP 0185917 B1 EP0185917 B1 EP 0185917B1 EP 85114606 A EP85114606 A EP 85114606A EP 85114606 A EP85114606 A EP 85114606A EP 0185917 B1 EP0185917 B1 EP 0185917B1
Authority
EP
European Patent Office
Prior art keywords
projectile
weft
suction
loom according
cutting device
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
EP85114606A
Other languages
German (de)
English (en)
Other versions
EP0185917A1 (fr
Inventor
Lorant Gacsay
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 EP0185917A1 publication Critical patent/EP0185917A1/fr
Application granted granted Critical
Publication of EP0185917B1 publication Critical patent/EP0185917B1/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
    • D03D47/12—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms wherein single picks of weft thread are inserted, i.e. with shedding between each pick
    • D03D47/24—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms wherein single picks of weft thread are inserted, i.e. with shedding between each pick by gripper or dummy shuttle
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D49/00—Details or constructional features not specially adapted for looms of a particular type
    • D03D49/70—Devices for cutting weft threads

Definitions

  • the invention relates to a projectile weaving machine with a return transport device for the projectiles arranged between the catching mechanism and the weft mechanism.
  • Such a projectile weaving machine is e.g. B. in DE-A-2 712 431 (T.470).
  • projectile weaving machines of this type in contrast to other weaving machines in which the weft is introduced by means of rapier rods, rapier belts, compressed air or water nozzles, it is not absolutely necessary to cut off the weft ends on the catch side, since the position of the weft end is theoretically always defined.
  • the other weaving machines mentioned have system weft lengths that vary by several centimeters due to the system.
  • the cut ends (size approx. 50 - 100 mm) are z. B. as a cut edge, d. H. integrated with leno threads, or removed individually by suction. This gives you a neatly cut product edge.
  • the ends of the weft can also be inserted into the following compartment by means of lasts.
  • the object of the invention is to improve the projectile weaving machine mentioned at the outset in such a way that deviations with respect to the weft ends at the front edge of the goods are avoided with particularly little loss of material.
  • the measure is that a cutter for cutting off the catch-side weft end is assigned to the catch before it is released from the projectile.
  • the weft end cut off by the cutting device can be left in the unopened projectile, transported together with the projectile through the return transport device to the weft and removed when the projectile is opened there. This means that there is no need for a projectile opener on the catch side.
  • the actuation of the cutting device can only be provided after the projectile has been pushed back into its ejection position. This results in a substantial saving in material in that the weft end is cut off only after it has reached its minimum length.
  • a suction and / or blowing device can be provided to remove the cut weft end. This results in a particularly simple and inexpensive removal of the cut weft ends.
  • the suction and / or blowing device can consist of a suction tube assigned to the projectile and a blowing nozzle arranged transversely thereto, which is swept through the projectile clip opening when the projectile clip is open. This allows particularly economical air flow to be achieved.
  • blowing nozzle can have a branch which opens into the suction pipe. In this way, an increase in the suction effect can be achieved.
  • a projectile 10 (FIG. 1) is brought into the weft 12 by a pivotable projectile lifter 14 in the weft position 16, whereby the weft thread 20 is inserted into the open projectile clamp, not shown, by a mechanical or air nozzle, and the projectile 10 by the Compartment 28 formed from upper warp threads 24 and lower warp threads 26 is accelerated to the catch mechanism 30, where it is braked in the braking device 32 and is pushed into the ejection position 36 by the return slide 34.
  • the inserted weft thread 10 is cut by the cutting device 38 on the weft side and by the cutting device 40 on the catch side cut off, after which the registered weft thread is struck by the reed, not shown.
  • the projectile 10 lying in the ejection position 36 is opened by the projectile opener 42 and the cut thread end 44 is released and removed by the suction and / or blowing device 46.
  • the projectile 10 is subsequently transported back to the firing unit 12 by the return transport device 48, which consists of a return transport chain 54 with carriers 56 mounted on chain wheels 50, 52, after which the described firing process is repeated.
  • a cam control is used in a known manner to control the catch-side cutting device 40, projectile return slide 34 and projectile opener 42. This ensures that the catch-side cutting device 40 and projectile opener 42 are actuated only after the push-back 34 has brought the projectile into the ejection position 36.
  • FIG. 2 corresponds to that described, with the difference that the projectile opener 42 on the catch side is omitted, that the cut thread end 44 is left in the projectile 10 during the return transport, and that the suction and blowing device 46 is arranged in the weft 12.
  • the weft-side projectile opener 43 is therefore sufficient to remove the thread ends.
  • the projectile 10 with the opened clamp 57 is located in the projectile lifter 14, which together with the projectile opener 43 is pivotably mounted on the axis 62.
  • a suction pipe 64 and a blowing nozzle 66 are assigned to the projectile 10.
  • the blowing nozzle 66 is arranged according to FIG. 4 so that it is swept through the projectile clamp opening 68 when the projectile 10 is swung up. This allows particularly economical air flow to be achieved.
  • the blow pipe has nozzle openings 70 and is connected to a compressor 71.
  • the blowing nozzle 72 has a branch 74 which opens into the suction pipe 64. In this way, an increase in the suction effect can be achieved.

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

Claims (6)

1. Métier a tisser à projectile comportant un dispositif de transport en retour pour les projectiles, disposé entre un mécanisme de réception et un mécanisme de chasse, caractérisé en ce qu'un dispositif de coupe (40), destiné à couper le bout du fil de trame situé du côté réception, avant que ce fil soit libéré du projectile (10), est adjoint au mécanisme (30) de réception.
2. Métier à tisser selon la revendication 1, caractérisé en ce que le bout de fil de trame coupé par le dispositif de coupe (40) reste dans le projectile non ouvert (10) avec lequel il est transporté par le dispositif (48) de transport en retour jusqu'au mécanisme (12) de chasse et est enlevé par l'ouverture du projectile (10) dans ce mécanisme de chasse.
3. Métier à tisser à projectile selon la revendication 1, caractérisé en ce que la commande du dispositif (40) de coupe n'est prévue qu'après que le projectile (10) a été repoussé dans sa position d'expulsion (36).
4. Métier à tisser à projectile selon la revendication 1, caractérisé en ce qu'il est prévu un dispositif (46) d'aspiration et/ou de soufflage pour enlever le bout de fil de trame coupé.
5. Métier à tisser à projectile selon la revendication 4, caractérisé en ce que le dispositif (46) d'aspiration et/ou de soufflage est constitué d'un tube (64) d'aspiration associé au projectile (10) et d'une buse (66) de soufflage disposée transversalement à ce tube, laquelle buse est balayée par la pince de projectile ouverte (57) en passant dans l'ouverture (68) de la pince du projectile.
6. Métier à tisser à projectile selon la revendication 4, caractérisé en ce que la buse de soufflage (72) associée au projectile présente une dérivation (74) qui débouche dans le tube (64) d'aspiration.
EP85114606A 1984-12-18 1985-11-16 Métier à tisser à projectiles Expired EP0185917B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH5990/84 1984-12-18
CH5990/84A CH664385A5 (de) 1984-12-18 1984-12-18 Projektilwebmaschine.

Publications (2)

Publication Number Publication Date
EP0185917A1 EP0185917A1 (fr) 1986-07-02
EP0185917B1 true EP0185917B1 (fr) 1988-08-31

Family

ID=4302596

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85114606A Expired EP0185917B1 (fr) 1984-12-18 1985-11-16 Métier à tisser à projectiles

Country Status (5)

Country Link
US (1) US4640315A (fr)
EP (1) EP0185917B1 (fr)
CH (1) CH664385A5 (fr)
DE (1) DE3564711D1 (fr)
SU (1) SU1505445A3 (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
DE4120568A1 (de) * 1991-03-08 1992-09-10 Textilma Ag Greiferwebmaschine

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2034487A (en) * 1932-05-23 1936-03-17 Firm Tefag Textil Finanz A G Weaving in looms having nipper shuttles for drawing weft threads from stationary supplies
US2599731A (en) * 1949-08-25 1952-06-10 Warner Swasey Co Shuttle cleaner
US3083738A (en) * 1958-06-27 1963-04-02 Sulzer Ag Forming a selvage on a fabric by bending projecting weft thread ends into the shed while the fabric is woven
FR1518797A (fr) * 1967-01-24 1968-03-29 Perfectionnements aux métiers à tisser sans navette
CH489645A (de) * 1968-09-20 1970-04-30 Rueti Ag Maschf Anordnung zum Reinigen eines Schussfadeneintragsorgans
JPS519428B1 (fr) * 1971-03-06 1976-03-26
FR2374450A1 (fr) * 1976-12-20 1978-07-13 Uco Nv Sa Metier a tisser sans navette
CH613481A5 (fr) * 1977-02-04 1979-09-28 Sulzer Ag
US4185667A (en) * 1978-05-17 1980-01-29 Rossville Mills, Inc. Positioning and holding mechanisms for filling yarns in a shuttleless loom
EP0137069A1 (fr) * 1983-10-11 1985-04-17 GebràœDer Sulzer Aktiengesellschaft Dispositif pour le nettoyage du côté insertion d'un métier à tisser

Also Published As

Publication number Publication date
CH664385A5 (de) 1988-02-29
US4640315A (en) 1987-02-03
DE3564711D1 (en) 1988-10-06
SU1505445A3 (ru) 1989-08-30
EP0185917A1 (fr) 1986-07-02

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