EP0189497B1 - Dispositif pour l'insertion d'au moins un fil de trame dans les métiers à tisser - Google Patents

Dispositif pour l'insertion d'au moins un fil de trame dans les métiers à tisser Download PDF

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Publication number
EP0189497B1
EP0189497B1 EP85100856A EP85100856A EP0189497B1 EP 0189497 B1 EP0189497 B1 EP 0189497B1 EP 85100856 A EP85100856 A EP 85100856A EP 85100856 A EP85100856 A EP 85100856A EP 0189497 B1 EP0189497 B1 EP 0189497B1
Authority
EP
European Patent Office
Prior art keywords
weft
yarn
tensioning device
thread
arrangement according
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
EP85100856A
Other languages
German (de)
English (en)
Other versions
EP0189497A1 (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
Priority to EP85100856A priority Critical patent/EP0189497B1/fr
Priority to DE8585100856T priority patent/DE3564596D1/de
Priority to US06/817,423 priority patent/US4649965A/en
Priority to SU864007952A priority patent/SU1454260A3/ru
Priority to JP61011231A priority patent/JPS61174446A/ja
Publication of EP0189497A1 publication Critical patent/EP0189497A1/fr
Application granted granted Critical
Publication of EP0189497B1 publication Critical patent/EP0189497B1/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
    • D03D47/34—Handling the weft between bulk storage and weft-inserting means

Definitions

  • the invention relates to an arrangement for inserting at least one weft thread for weaving machines, in particular rapier projectile weaving machines, with a first weft thread tensioning device and a weft thread transfer device for holding the weft thread until it is transferred to a weft thread insertion device.
  • the invention has for its object to provide a weft tensioning device of the type defined, these adverse phenomena can not occur.
  • This object is achieved according to the invention by the features specified in the characterizing part of claim 1.
  • the subclaims relate to advantageous further developments.
  • FIG. 1 shows an arrangement for inserting eight weft threads in alternating operation according to the sample program, which consists of a weft thread tensioning device and a weft thread tensioning device II.
  • the tensioning device is described below with reference to FIG. 2.
  • the tensioning device I has a thread tensioner 1 in the form of a bracket which can be rotated about an axis 2.
  • the thread tensioner 1 is guided with a roller 3 on a control disk 4 which is driven by the main shaft of the weaving machine.
  • a crossbar 5 of the thread tensioner 1 swings in the machine rhythm across a set 6 of weft threads, each of which originates from a supply spool (not shown).
  • the crossbar is provided with eight thread troughs.
  • Furthermore, on both sides of the crossbar 5 there is a carrier 11 and 12, each with eight thread eyelets 13 and 14.
  • FIG. 3 shows three of the eight holding elements which are fastened on the carrier 8.
  • Each holding element 18 consists of two lamellae 18 ′ and 18 ′′, which can hold a weft thread deflected by the thread tensioner 1 by means of their spring.
  • the holding elements fastened on the carrier 9 are designated by 19 in FIG. 1.
  • the weft thread device II has eight thread tensioners 25 in the form of a lever with a thread trough 26 which is rotatable about an axis 27. There is a thread eyelet 28 and 29 on both sides of each thread trough, which are attached to supports 30 and 31, respectively.
  • the weft thread family 6 passes through the tensioning device II and a transmitter nozzle 32, the mouth 33 of which ends in the firing position in front of a gripper projectile. Only the thread clamp 34 is drawn from the projectile.
  • the transmitter nozzle 32 is fed with compressed air via a line 35. Any weft, e.g.
  • each thread tensioner 25 is actuated synchronously with the thread tensioner 1 by an associated motor 37 in accordance with the fabric pattern program, so that the selected thread tensioner 25 is moved up and down between a deflected position 25 ′ and a release position 25 ′′.
  • Fig. 1 The position shown in Fig. 1 is taken as the starting point for the following explanation of the operation of the arrangement. All weft threads are deflected by thread tensioners 1 and 25. The weft threads deflected by the crossbar 5 are held in this position by the holding elements 18 and 19. All weft threads in both tensioning devices I and II are tensioned by pulling the compressed air flowing through the transmitter nozzle 32. The thread clamp 34 is open. When the selected weft thread is inserted - here again the weft thread 16 is considered as an example, the associated thread tensioner 25 first swings clockwise, so that the weft thread can stretch freely in position 16 'due to the tensile force of the nozzle 32.
  • the nozzle 32 blows the end 16 "of the weft thread into the thread clamp 34 of the projectile.
  • the weft thread moves forward over a length x. This length is referred to here as the transfer length.
  • the thread clamp 34 is now closed. The position is as shown in FIG. 4.
  • the thread tensioner 1 of the thread tensioning device was simultaneously lifted from the control disk 4.
  • the holding elements 18 and 19 hold the thread 16 in the deflected position, when the transfer of the weft thread to the thread clamp 34 of the projectile has ended the thread tensioner 1 has reached the position 1 '.
  • the projectile is shot into the shed by a firing mechanism 38.
  • the weft thread 16 is pulled out of the holding elements 18 and 19.
  • the thread brake 17 was opened before the projectile was fired , so that the weft with the required entry length is pulled off the supply spool and entered the shed will agen.
  • the control disk 4 continuously moves the thread tensioner 1 upward, so that the weft thread can stretch freely into the position 16 ′′ under the influence of the tensile force of the projectile 32.
  • the weft threads not to be entered remain clamped in their holding elements the corresponding thread tensioner of the thread tensioning devices II of the weft threads not to be inserted in their deflected position lowered by the control disk 4, so that the weft thread remains stretched.
  • An edge thread clamp on both sides of the shed takes over the weft thread.
  • the weft thread is cut through on the weft side by scissors 39 and released on the catch side by the projectile by opening the thread clamp 34. D the thread is struck by the reed. The weft thread is deflected further by the thread tensioner 1, which further lowers and additionally by the thread tensioner 25, which also lowers, until its end lies within the mouth 33 of the nozzle 32. While the thread tensioner 1 moves to the low position with the weft thread, the thread is clamped between the holding elements 18 and 19.
  • a transport device picks up the projectile ejected from the trap and transports it back to the launch site outside the shed. The projectile is opened by the projectile opener and at the same time swung by a projectile lifter in front of the nozzle 32, so that it is ready to take up the next weft thread. The position is then again as in FIG. 1.
  • FIG. 5 shows an exemplary embodiment, the holding elements 40 and 41 for the weft threads reaching up to the height of the stretched weft threads 42 ′ or even slightly beyond.
  • Such long holding elements brake the weft thread practically during its entire insertion movement. Due to the friction experienced by the weft thread, the weft thread is stretched evenly and not jerkily during the entry process, so that it is not excessively stressed.
  • the arrangement consists of a first tensioning device 111 with a thread tensioner 44 and a second tensioning device IV.
  • the tensioning device IV has a thread tensioner 45 in the form of a double lever for each weft thread, which is rotatable about a fixed point 46 and on its free end is provided with a thread eyelet 47 for the weft thread.
  • the other end of the thread tensioner 45 is connected to an actuating rod 48 of an actuating motor 49.
  • the first tensioning device 111 and the tensioning device IV thus have the thread eyelets 47 in common.
  • the arrangement works in such a way that the transfer of the weft thread 50 to be inserted to the thread clamp of the projectile takes place by a counterclockwise rotation of the thread tensioner 45, so that its part 45 ′ moves the weft thread from the position 47 ′ to the right into the position 47 ′ by means of the thread eyelet Layer 47 ". There is thus a partial stretching or forward movement of the weft thread, so that the thread length x is released for transfer to the projectile.
  • the tensioning device 111 and IV pivoted back into its deflected positions.
  • a pivot point 55 of a thread tensioner 56 of a tensioning device V is selected such that the thread eyelet 57 of the thread tensioner lies in a position 57 'below a transmitter gland 58 at the end of the release movement of the tensioning device.
  • a tensioning device VI for each weft thread has on the one hand three deflecting bodies 65, 66 and 67 below a weft thread 68 and on the other hand two deflecting bodies 69 and 70 which are fastened to an actuating rod 71 of an actuating motor 72.
  • the deflection bodies 69 and 70 are located between the deflection bodies 65, 66 and 67, respectively, so that two loops 73 and 74 are formed and the weft thread end 68 lies in the mouth of a donor nozzle 75.
  • the actuating rod 71 is raised from the low position 71 'by the servomotor 72, so that the two loops 73 and 74 stretch and give a total of the transfer length x to the projectile.
  • both tensioning devices are pivoted back into their deflected position.
  • FIG. 9 shows an exemplary embodiment of an arrangement for inserting the weft threads in two-weft or mixed-change operation, two weft threads alternating or alternating be entered according to a specific sample program.
  • An insertion device is provided for each weft thread 85 or 86.
  • the insertion device 87 for the weft thread 85 consists of a tensioning device VII and a tensioning device VIII.
  • the insertion device 88 for the weft thread 86 consists of a tensioning device IX and a tensioning device X. Both entry devices 87 and 88 work alternately or according to the pattern program as before for the others Embodiments described.
  • the tensioning movement of the weft thread sections 85 'and 86' in the tensioning device VIII and X take place under the influence of a common thread tensioner 89 which vibrates transversely to the two weft threads in the machine rhythm.
  • the arrangement can also be rotated by 180 °, i.e. the thread deflection occurs upwards instead of downwards.

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

Claims (10)

1. Dispositif pour insérer au moins un fil de trame dans des métiers à tisser, notamment des métiers à tisser à projectiles à pinces, comprenant un premier mécanisme tendeur de fil de trame et un mécanisme de transfert du fil de trame pour retenir ce fil de trame jusqu'à son transfert à un mécanisme d'insertion de fils de trame, caractérisé par le fait que le premier mécanisme tendeur (I; III; VII; IX) est suivi d'un second mécanisme tendeur (II; IV; V; VI; VIII; X) dont la longueur de tension du fil correspond de manière identique à la longueur de transfert (x) du fil de trame (16) au mécanisme d'insertion (34); qui libère une partie du fil de trame avec une longueur identique à la longueur de transfert, en vue du transfert au mécanisme d'insertion, avant que le premier mécanisme tendeur libère le fil de trame en vue de l'insertion; et qui, après l'insertion, rétracte une partie du fil de trame présentant une longueur identique.
2. Dispositif selon la revendication 1, caractérisé par le fait que le premier mécanisme tendeur (I) présente un bande-fil (1 ) qui oscille au rythme de travail du métier et est pourvu d'une barrette (5) orientée perpendiculairement aux fils de trame (6) et accomplissant, entre des guide-fil (13, 14) disposés de part et d'autre de cette barrette, dans l'une des directions un mouvenment de déviation pour les fils de trame et, dans l'autre direction, un mouvement de dégagement pour ces derniers; par le fait que le premier mécanisme tendeur comporte des éléments (18, 19) de retenue de chaque fil de trame (16) afin de retenir celui-ci dans la position déviée et de le libérer en vue de l'insertion; et par le fait que le second mécanisme tendeur (II) possède, pour chaque fil de trame, un bande-fil (25) qui accomplit perpendiculairement au fil de trame, entre deux guide-fil (28, 29), dans l'une des directions un mouvement de déviation pour les fils de trame et, dans l'autre direction, un mouvement de dégagement pour ces derniers.
3. Dispositif selon la revendication 2, caractérisé par le fait que les bande-fil (71) du second mécanisme tendeur (VI) présentent au moins deux corps de renvoi (69, 70) qui peuvent respectivement s'engager entre deux corps de renvoi (65, 66, 66, 67) disposés de l'autre côté du fil de trame (68), en vue de former une boucle (73, 74).
4. Dispositif selon la revendication 1, caractérisé par le fait que le premier mécanisme tendeur (III) présente un bande-fil (44) qui oscille au rythme de travail du métier et est équipé d'une barrette orientée perpendiculairement aux fils de trame et accomplissant, entre deux guide-fil disposés de part et d'autre de cette barrette, dans l'une des directions un mouvement de déviation pour les fils de trame et dans l'autre direction, un mouvement de dégagement pour ces derniers; par le fait que le premier mécanisme tendeur comporte un élément de retenue pour chaque fil de trame, afin de retenir celui-ci dans la position déviée et de le libérer en vue de l'insertion; et par le fait que le second mécanisme tendeur (IV) possède, pour chaque fil de trame (50), un bande-fil (45) qui est pourvu d'un guide-fil (47) et qui accomplit, parallèlement aux fils de trame, dans l'une des directions un mouvement de déviation pour ces fils de trame et, dans l'autre direction, un mouvement de dégagement pour ces derniers.
5. Dispositif selon la revendication 4, caractérisé par le fait que les premier et second mécanismes tendeurs (V) présentent associativement leurs guide-fil (57) adjacents, et ceux-ci sont disposés sur les bande-fil (56) du second mécanisme tendeur.
6. Dispositif selon la revendication 4 ou 5, caractérisé par le fait que les guide-fil mobiles (57) se trouvent au-dessous du mécanisme de transfert (58) à la fin de leur mouvement de dégagement.
7. Dispositif selon l'une des revendication 1-5, caractérisé par le fait que le second mécanisme tendeur (II; IV; V; VI; VIII; X) fonctionne, au moin pendant le mouvement de dégagement, en synchronisme avec le premier mécanisme tendeur (I; III; VII; IX).
8. Dispositif selon la revendication 1, fonctionnant respectivement en mode double duite ou à duites alternatives combinées, caractérisé par le fait que les deux mécanismes tendeurs (VII; VIII; IX; X) sont prévus pour chaque fil de trame (85, 86); et par le fait que ces deux mécanismes tendeurs fonctionnement respectivement de manière alternée, ou selon un motif programmé.
9. Dispositif selon la revendication 8, caractérisé par le fait que les deux seconds mécanismes tendeurs (VIII, X) présentent un bande-fil commun (89) oscillant, au rythme de travail du métier, perpendiculairement aux fils de trame.
10. Dispositif selon l'une des revendications 2 à 7, caractérisé par le fait que les éléments de retenue (40, 41 ) s'étendent au moins jusqu'à la hauteur des fils de trame étirés (42').
EP85100856A 1985-01-28 1985-01-28 Dispositif pour l'insertion d'au moins un fil de trame dans les métiers à tisser Expired EP0189497B1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP85100856A EP0189497B1 (fr) 1985-01-28 1985-01-28 Dispositif pour l'insertion d'au moins un fil de trame dans les métiers à tisser
DE8585100856T DE3564596D1 (en) 1985-01-28 1985-01-28 Arrangement for the insertion of at least one weft thread into looms
US06/817,423 US4649965A (en) 1985-01-28 1986-01-09 Picking arrangement for a weaving machine
SU864007952A SU1454260A3 (ru) 1985-01-28 1986-01-17 Устройство дл прокладывани по меньшей мере одной уточной нити на бесчелночном ткацком станке преимущественно с микропрокладчиками
JP61011231A JPS61174446A (ja) 1985-01-28 1986-01-23 織機の緯糸よこ入れ機構

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP85100856A EP0189497B1 (fr) 1985-01-28 1985-01-28 Dispositif pour l'insertion d'au moins un fil de trame dans les métiers à tisser

Publications (2)

Publication Number Publication Date
EP0189497A1 EP0189497A1 (fr) 1986-08-06
EP0189497B1 true EP0189497B1 (fr) 1988-08-24

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ID=8193260

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85100856A Expired EP0189497B1 (fr) 1985-01-28 1985-01-28 Dispositif pour l'insertion d'au moins un fil de trame dans les métiers à tisser

Country Status (5)

Country Link
US (1) US4649965A (fr)
EP (1) EP0189497B1 (fr)
JP (1) JPS61174446A (fr)
DE (1) DE3564596D1 (fr)
SU (1) SU1454260A3 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE1003558A3 (nl) * 1989-09-19 1992-04-21 Picanol Nv Blaasinrichting voor inslagdraden bij weefmachines.
DE59304128D1 (de) * 1993-03-26 1996-11-14 Rueti Ag Maschf Verfahren zum Beeinflussen der Bewegung eines von einer Vorratsspule abzuziehenden, gegen eine Schusseintragseinrichtung einer Webmaschine verlaufenden Schussfadens und Webmaschine zur Durchführung des Verfahrens
ITUB20155496A1 (it) * 2015-11-11 2017-05-11 Pezzoli Miria Sistema controllato di alimentazione di filo di trama in un telaio
WO2017081711A1 (fr) * 2015-11-11 2017-05-18 P.T.M.T. S.R.L Système commandé d'alimentation en fil de trame dans un métier à tisser

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB353764A (en) * 1929-09-23 1931-07-30 Teeag Textil Finanz A G Improvements in looms with nipping shuttles
US2589429A (en) * 1945-11-24 1952-03-18 Sulzer Ag Device for tensioning the weft thread in looms
FR1260351A (fr) * 1960-06-16 1961-05-05 Sulzer Ag Dispositif de tension de la matière de trame à insérer dans la foule
SU589305A1 (ru) * 1976-03-01 1978-01-25 Чебоксарский Машиностроительный Завод Механизм компенсации уточной нити дл бесчелночного ткацкого станка
FR2466548A1 (fr) * 1979-09-27 1981-04-10 Cretin Louis Atel Dispositif de retirage de trame apres insertion, pour une machine a tisser avec reserve de trame fixe
CH654601A5 (de) * 1982-04-07 1986-02-28 Sulzer Ag Schussfadenspannvorrichtung fuer webmaschinen, insbesondere greiferpojektil-webmaschinen.

Also Published As

Publication number Publication date
US4649965A (en) 1987-03-17
SU1454260A3 (ru) 1989-01-23
DE3564596D1 (en) 1988-09-29
EP0189497A1 (fr) 1986-08-06
JPS61174446A (ja) 1986-08-06

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