EP0189497A1 - 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
EP0189497A1
EP0189497A1 EP85100856A EP85100856A EP0189497A1 EP 0189497 A1 EP0189497 A1 EP 0189497A1 EP 85100856 A EP85100856 A EP 85100856A EP 85100856 A EP85100856 A EP 85100856A EP 0189497 A1 EP0189497 A1 EP 0189497A1
Authority
EP
European Patent Office
Prior art keywords
thread
weft
weft thread
tensioning device
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.)
Granted
Application number
EP85100856A
Other languages
German (de)
English (en)
Other versions
EP0189497B1 (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
Sulzer AG
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 Sulzer AG, Gebrueder Sulzer AG filed Critical Sulzer AG
Priority to DE8585100856T priority Critical patent/DE3564596D1/de
Priority to EP85100856A priority patent/EP0189497B1/fr
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 weft thread builds up in front of the projectile and it can happen that the weft thread end is inclined to the projectile before it is completely closed and is not taken over by the projectile and a so-called loser arises or that the end of the thread gets between the knocking nose of the launcher and the projectile and is squeezed when firing.
  • the invention has for its object to provide a weft thread tensioning device of the type defined in the introduction, whereby these disadvantageous phenomena cannot 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 I and a weft thread tensioning device II.
  • the tensioning device I 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 group 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 can hold deflected weft.
  • the holding elements fastened on the carrier 9 are designated 19 in FIG. 1.
  • the weft thread tensioning device II has eight thread tensioners 25 in the form of a lever with a thread trough 26 which can be rotated about an axis 27. Both on the side of each thread trough there is a thread eyelet 28 and 29 which are fastened on 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.
  • each weft thread passes through the eyelet 28, the thread trough 26 in the thread tensioner concerned, the eyelet 29 and one of the eight weft thread guide channels in the donor nozzle 32.
  • each thread tensioner 25 is synchronized with the thread tensioner 1 by an associated motor 37 actuated 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 - the weft thread 16 is again considered here as an example - the associated thread tensioner 25 initially swings clockwise, so that the weft thread can stretch freely into the position 16 'by 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 shown.
  • the thread tensioner 1 of the thread tensioning device I was simultaneously lifted from the control disk 4.
  • the thread tensioner 1 has reached the position 1 '.
  • the projectile is launched into the shed by a launcher mechanism 38.
  • the weft 16 is pulled out of the holding elements 18 and 19.
  • the thread brake 17 was opened so that the weft thread with the required entry length is drawn off the supply spool and inserted into the shed.
  • 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 which are not to be entered remain clamped in their holding elements
  • the corresponding thread tensioners of the thread tensioning devices II of the weft threads not to be inserted remain in their deflected position.
  • the thread tensioner becomes 1 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.
  • 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 with the weft thread to the low moved position, 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. 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 with a thread tensioner 44 consists of a first tensioning device III with a thread tensioner 44 and a second tensioning device IV.
  • the tensioning device IV has a thread tensioner 45 in the form of an egg double lever, which is rotatable about a fixed point 46 and is attached to it 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 III 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 by means of the thread eyelet 47 Layer 47 "relocated. There is therefore a partial extension or forward movement of the weft thread, so that the thread length x is released for transfer to the projectile.
  • the tensioning devices III and IV are pivoted back into their 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 nozzle 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 a servomotor 72.
  • the deflecting bodies 69 and 70 are located between the deflecting bodies 65, 66 and 66, 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 lengths 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 a two-weft or mixed change operation, with two weft threads being inserted alternately or alternately 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. Clamping device X. Both entry devices 87 and 88 work alternately or in accordance with the sample program, as previously described for the other embodiments.
  • the arrangement can also be rotated by 180, i.e. the thread deflection occurs upwards instead of downwards.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
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
DE8585100856T DE3564596D1 (en) 1985-01-28 1985-01-28 Arrangement for the insertion of at least one weft thread into looms
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
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 true EP0189497A1 (fr) 1986-08-06
EP0189497B1 EP0189497B1 (fr) 1988-08-24

Family

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)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0617153A1 (fr) * 1993-03-26 1994-09-28 Sulzer RàœTi Ag Procédé pour influencer le mouvement d'un fil de trame tiré d'une bobine de réserve vers le dispositif d'insertion de trame d'un métier à tisser et métier à tisser pour l'exécution de ce procédé

Families Citing this family (3)

* 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.
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
ITUB20155496A1 (it) * 2015-11-11 2017-05-11 Pezzoli Miria Sistema controllato di alimentazione di filo di trama in un telaio

Citations (5)

* 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
FR1260351A (fr) * 1960-06-16 1961-05-05 Sulzer Ag Dispositif de tension de la matière de trame à insérer dans la foule
FR2343066A1 (fr) * 1976-03-01 1977-09-30 Cheboxarsky Mashstr Zavod Mecanisme de compensation de la longueur du fil de trame sur un metier a tisser sans navette
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
EP0090878A1 (fr) * 1982-04-07 1983-10-12 GebràœDer Sulzer Aktiengesellschaft Dispositif de tension de la trame pour métiers à tisser, plus particulièrement pour les métiers à projectiles

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2589429A (en) * 1945-11-24 1952-03-18 Sulzer Ag Device for tensioning the weft thread in looms

Patent Citations (5)

* 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
FR1260351A (fr) * 1960-06-16 1961-05-05 Sulzer Ag Dispositif de tension de la matière de trame à insérer dans la foule
FR2343066A1 (fr) * 1976-03-01 1977-09-30 Cheboxarsky Mashstr Zavod Mecanisme de compensation de la longueur du fil de trame sur un metier a tisser sans navette
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
EP0090878A1 (fr) * 1982-04-07 1983-10-12 GebràœDer Sulzer Aktiengesellschaft Dispositif de tension de la trame pour métiers à tisser, plus particulièrement pour les métiers à projectiles

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0617153A1 (fr) * 1993-03-26 1994-09-28 Sulzer RàœTi Ag Procédé pour influencer le mouvement d'un fil de trame tiré d'une bobine de réserve vers le dispositif d'insertion de trame d'un métier à tisser et métier à tisser pour l'exécution de ce procédé
US5423355A (en) * 1993-03-26 1995-06-13 Sulzer Rueti Ag Method and apparatus for limiting stresses in weft yarn advancing towards a weft insertion mechanism

Also Published As

Publication number Publication date
JPS61174446A (ja) 1986-08-06
US4649965A (en) 1987-03-17
EP0189497B1 (fr) 1988-08-24
SU1454260A3 (ru) 1989-01-23
DE3564596D1 (en) 1988-09-29

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