EP0185687B1 - Machine pour passer des fils de chaine dans un peigne de metier a tisser - Google Patents

Machine pour passer des fils de chaine dans un peigne de metier a tisser Download PDF

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Publication number
EP0185687B1
EP0185687B1 EP85902430A EP85902430A EP0185687B1 EP 0185687 B1 EP0185687 B1 EP 0185687B1 EP 85902430 A EP85902430 A EP 85902430A EP 85902430 A EP85902430 A EP 85902430A EP 0185687 B1 EP0185687 B1 EP 0185687B1
Authority
EP
European Patent Office
Prior art keywords
reed
carriage
hook
gap
centre
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
EP85902430A
Other languages
German (de)
English (en)
Other versions
EP0185687A1 (fr
Inventor
Hans Tobler
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.)
G BOPP AND CO AG
Original Assignee
G BOPP AND CO 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 G BOPP AND CO AG filed Critical G BOPP AND CO AG
Priority to AT85902430T priority Critical patent/ATE33505T1/de
Publication of EP0185687A1 publication Critical patent/EP0185687A1/fr
Application granted granted Critical
Publication of EP0185687B1 publication Critical patent/EP0185687B1/fr
Expired legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03J—AUXILIARY WEAVING APPARATUS; WEAVERS' TOOLS; SHUTTLES
    • D03J1/00—Auxiliary apparatus combined with or associated with looms
    • D03J1/14—Apparatus for threading warp stop-motion droppers, healds, or reeds

Definitions

  • the invention relates to a machine for pulling warp threads into a weaving comb, with a slide which is moved stepwise along the weaving comb in accordance with the reed pitch and a reed knife which is mounted longitudinally movably on the slide transversely to the slide track and which automatically moves into the reed gap between two adjacent reed rods after each step of the slide of a weaving comb to be arranged parallel to the sled run and is pulled back again after the warp thread has been hung in.
  • the invention was based on the object of developing a machine for drawing in warp threads into a weaving comb, in which the sliding process of the carriage is controlled as a function of the fluctuating reed pitch and in which the disadvantages of mechanical reed scanning eliminated.
  • the machine according to the invention is characterized by means for continuous, contact-free measurement of the reed pitch, means for calculating the distance between the center of the reed gap occupied by the reed knife and the center of the next following reed gap, and means for controlling the carriage feed in stride lengths according to the calculated center-to-center gap.
  • a preferred embodiment of the invention consists in that a television camera is arranged on the carriage, each of which detects a part of the weaving comb, and that an electronic device is provided that digitizes the analog image signals with an A / D converter, which is recorded on a monitor Digital image on a longitudinal axis thereof in pixels binary disassembled, with a computing device, the successive series is one of bright and dark pixels, the bright / dark and dark / bright transitions he f Asst and based on this information and a predetermined comprising an input device image measuring scale the respective reed gaps -Center distances calculated and control signals for the step drive of the carriage generated.
  • an electronic device digitizes the analog image signals with an A / D converter, which is recorded on a monitor Digital image on a longitudinal axis thereof in pixels binary disassembled, with a computing device, the successive series is one of bright and dark pixels, the bright / dark and dark / bright transitions he f Asst and based on this information and a predetermined compris
  • the control of the reed knife drive is preferably coupled to that of the slide drive, so that each work step of the machine begins with the retraction of the reed knife from a reed gap and ends with the advance of the reed knife into the adjacent reed gap. Between these steps of the machine, the warp thread is hooked onto the hook of the reed knife.
  • a switch which can be operated by hand or by foot is expediently provided to initiate each working step of the machine. As a result, the machine's work speed can be adapted to that of the operator when the warp thread is hung in manually.
  • a fine adjustment device for lateral displacement of the reed knife can be provided on the slide, with which the position of the reed knife can be adjusted with respect to the center of the image.
  • Fig. 1 shows schematically a carriage 1 which is movable along a threaded spindle 2 and some reed rods 3 of the weaving comb, which is arranged parallel to the threaded spindle 2.
  • a reed knife 5 is mounted so that it can move longitudinally transversely to the slide track.
  • the reed knife 5 is z.
  • the slide 1 is moved step by step with the reed knife 5 retracted in accordance with the reed pitch 10, the reed knife 5 being pushed into the reed gap between two adjacent reed bars 3 by means of the working cylinder 7 after each step of the slide 1 and being retracted again after the warp thread has been hung in.
  • the warp thread is pulled when the reed knife 5 retracts through the relevant reed gap and then in a manner not shown, for. B. mechanically, disengaged from the reed knife.
  • 2 shows from the side the weaving comb 4 with the reed rods 3 and the reed knife 5 with the hook opening 11 for hanging in the warp thread.
  • a television camera 12 is now arranged above the reed knife 5, which is attached to the carriage 1 in a manner not shown.
  • this television camera 12 part of the weaving comb 4 is optically recorded, it being sufficient for the intended purpose to have a few reed rods 3 in the field of view of the television camera 12.
  • means for changing the image scale are preferably provided. Such means are known per se and are not described in detail here.
  • the central axis 13 of the television camera 12 is intended to meet the plane 14 of the weaving comb 4 at an altitude such that the tip 15 of the reed knife 5 hits this plane during the advance.
  • a fine adjustment device which can be provided on the carriage 1 for a lateral displacement of the reed knife 5 in order to relate the position of the reed knife 5. to be able to adjust the center of the image or on the vertical plane through the central axis 13 of the television camera 12.
  • the electronic device shown in FIG. 3 for measuring the reed pitch and calculating the reed gap-center distance contains an A / D converter 16, a monitor 17, a computer 18 and an input device 19 for specifying the image scale.
  • the analog image signals supplied by the television camera 12 are converted in the A / D converter 16 into digital signals which are fed to the monitor 17 and the computer 18.
  • the digital image captured on the monitor is in a longitudinal axis 20 of the same, i. H. scanned in the horizontal direction of the image and broken down binary into a certain number of pixels.
  • the successive series of brighter (reed gaps) and darker (reed bars) pixels are counted by the computer 18 and the light / dark and dark / light transitions are recorded.
  • the computer 18 calculates, starting from the image center represented by a mark 21 on the monitor 17, one after the other, in the step sequence of the carriage 1, the successive individual reed divisions 10. At first on the center of those on the monitor 17 shown first reed gap of the weaving comb 4 of the set mark 21, the calculation gives exactly the distance between the center of the reed gap occupied by the reed knife 5 and the center of the next following reed gap.
  • control signals for controlling the carriage feed in step lengths are generated in accordance with the calculated reed gap-center distances. These control signals arrive at a stepper motor 22 or a direct current motor with an incremental encoder, which drives the threaded spindle 2 for the feed of the slide 1.
  • the slide 1 is moved into an initial position in which the reed knife 5 faces the first reed gap of the weaving comb 4 and the mark 21 appears on the monitor 17 in the middle of the digital image of this reed gap. Then the reed knife 5 is advanced into this first reed gap.
  • the machine can be started up, which is done by manual or foot actuation of the switch 23. Due to this switch actuation, the machine carries out one work step. which consists in first withdrawing the reed knife 5 and then unlatching the warp thread carried along, then shifting the carriage 1 by the reed pitch determined by the electronic device and finally pushing the reed knife 5 into the next following gap.
  • the control of the working cylinder 7 is coupled to that of the stepping motor 20 in a corresponding manner, not shown.
  • Each further step of the machine is initiated by actuating the switch 23.

Landscapes

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

Abstract

La machine comporte un coulisseau (1) muni d'une passette (5) effectuant un va-et-vient perpendiculairement à la trajectoire du coulisseau et qui, après chaque pas du coulisseau, est introduite automatiquement dans un interstice entre deux dents du peigne (4) disposé parallèlement à la trajectoire du coulisseau et est retirée après accrochage du fil de chaîne. La longueur des pas du coulisseau (1) est exactement égale à celle de la division correspondante du peigne qui est détectée optiquement à l'aide d'une caméra de télévision (12) et qui est mesurée respectivement calculée avec une installation électronique (16, 17, 18, 19). Cette mesure continue et sans contact de la division du peigne, permet un rentrage des fils sans erreur également dans des peignes fins, en évitant les inconvénients d'une détection mécanique du peigne.

Claims (5)

1. Machine pour passer des fils de chaîne dans un peigne (4) de métier à tisser, comprenant un chariot (1) qui est déplacé pas à pas le long de ce peigne (4) en suivant le pas (10) de ses dents, et une passette pour peigne (5) qui est montée mobile suivant sa longueur sur ce chariot (1) et transversalement à la trajectoire de celui-ci et qui, après chaque pas de ce chariot (1), est lancée automatiquement dans l'entredent séparant deux dents voisines (3) d'un peigne (4) devant être disposé parallèlement à la trajectoire du chariot (1) et est à nouveau rétractée après l'accrochage du fil de chaîne, caractérisée par des moyens (12-16-17) permettant de mesurer, d'une manière continue et sans contact, le pas (10) des dents du peigne, des moyens (18) permettant de calculer la distance séparant à chaque fois le milieu de l'entredent occupé par la passette (5) et le milieu de l'entredent qui suit immédiatement, et des moyens (22-2) permettant de commander l'avance du chariot (1) avec des longueurs de pas qui sont fonction de la mesure des distances calculées entre les milieux des entredents.
2. Machine suivant la revendication 1, caractérisée en ce qu'est disposée sur le chariot (1) une caméra de télévision (12) dont l'angle embrasse à chaque fois une partie du peigne (4) et en ce qu'il est prévu un appareillage électronique qui numérise les signaux vidéo analogiques à l'aide d'un convertisseur analogique/numérique (16), décompose en binaire, sur un axe longitudinal d'un moniteur (17) et sous forme de points image, l'image numérique couverte par ce moniteur, fait le décompte, à l'aide d'un calculateur (18), des séries successives de points vidéo clairs et foncés, détermine les transitions clair/foncé et foncé/clair et, sur la base de ces informations et d'une échelle d'image qui est préfixée à l'aide d'un dispositif d'entrée (19), calcule à chaque fois les distances entre milieux d'entredent et produit des signaux de commande pour l'entraînement pas à pas du chariot (1).
3. Machine suivant la revendication 2, caractérisée en ce que la commande de l'entraînement (6-7-8-9) de la passette (5) est accouplée à celle de l'entraînement (22) du chariot (1) de façon que chaque phase de travail de la machine commence avec le retour de la passette (5) hors d"un entredent et se termine avec le lancement de cette passette (5) dans l'entredent voisin.
4. Machine suivant la revendication 3, caractérisée en ce qu'il est prévu, pour le déclenchement de chaque phase de travail de la machine, un interrupteur (23) à manoeuvrer à la main ou au pied.
5. Machine suivant la revendication 2, caractérisée en ce qu'il peut être prévu sur le chariot (1) un dispositif de réglage fin permettant un déplacement latéral de la passette (5) en translation et grâce auquel la position de cette passette (5) peut être réglée par rapport au centre de l'image.
EP85902430A 1984-06-18 1985-05-30 Machine pour passer des fils de chaine dans un peigne de metier a tisser Expired EP0185687B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85902430T ATE33505T1 (de) 1984-06-18 1985-05-30 Maschine zum einziehen von kettfaeden in einen webkamm.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH2945/84 1984-06-18
CH2945/84A CH663040A5 (de) 1984-06-18 1984-06-18 Maschine zum einziehen von kettfaeden in einen webkamm.

Publications (2)

Publication Number Publication Date
EP0185687A1 EP0185687A1 (fr) 1986-07-02
EP0185687B1 true EP0185687B1 (fr) 1988-04-13

Family

ID=4245167

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85902430A Expired EP0185687B1 (fr) 1984-06-18 1985-05-30 Machine pour passer des fils de chaine dans un peigne de metier a tisser

Country Status (6)

Country Link
US (1) US4748568A (fr)
EP (1) EP0185687B1 (fr)
JP (1) JPS61502472A (fr)
CH (1) CH663040A5 (fr)
DE (1) DE3562149D1 (fr)
WO (1) WO1986000346A1 (fr)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6440641A (en) * 1987-08-04 1989-02-10 Nishiki Kk Automatic warp yarn passing apparatus
JP2532665B2 (ja) * 1989-06-14 1996-09-11 シーケーディ株式会社 筬通し機における筬羽位置検出装置
US5274894A (en) * 1989-10-04 1994-01-04 Zellweger Uster Ag Machine for the automatic drawing-in of warp threads
CH679598A5 (fr) * 1989-12-22 1992-03-13 Zellweger Uster Ag
JPH0816301B2 (ja) * 1991-10-04 1996-02-21 合資会社橋詰研究所 高精度筬通し機
US5912816A (en) * 1995-03-23 1999-06-15 Milliken & Company Method and apparatus to align knitting needles and guides
SE510764C2 (sv) * 1995-09-19 1999-06-21 Texo Ab Metod, anordning och utrustning för att byta varptrådsuppsättningsutrustning
JPH09137342A (ja) * 1995-11-10 1997-05-27 Hashizume Kenkyusho:Kk 経糸の筬通し方法、および同方法に用いる高精度筬通し機
DE202015008820U1 (de) * 2015-12-28 2017-03-29 Peter Beike Kettfädeneinfädelvorrichtung
BE1026903B1 (nl) 2018-12-20 2020-07-22 Marcel Liebaert Werkwijze voor kettingbreien in een kettingbreimachine en het daarmee verkregen product
EP3754075B1 (fr) * 2019-06-19 2022-12-07 Stäubli Sargans AG Ensemble de surveillance de peigne, machine d'insertion incorporant un tel ensemble de surveillance de peigne et procédé de surveillance d'un peigne à l'aide un tel ensemble de surveillance de peigne
CN111705400A (zh) * 2020-06-30 2020-09-25 山东日发纺织机械有限公司 一种自动穿经机及筘刀插入钢筘的控制方法

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3072999A (en) * 1961-06-07 1963-01-15 William W Cook Warp sleying machine
DE2552189A1 (de) * 1975-11-21 1977-06-02 Ver Seidenwebereien Ag Rietstechvorrichtung
CH603849A5 (fr) * 1976-12-17 1978-08-31 Benninger Ag Maschf
US4233716A (en) * 1979-02-12 1980-11-18 Barber-Colmar Company Photoelectric heddle detection device

Also Published As

Publication number Publication date
US4748568A (en) 1988-05-31
WO1986000346A1 (fr) 1986-01-16
DE3562149D1 (en) 1988-05-19
CH663040A5 (de) 1987-11-13
EP0185687A1 (fr) 1986-07-02
JPS61502472A (ja) 1986-10-30

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