EP0081502A1 - Dispositif de preparation de la trame pour metiers a tisser pneumatiques. - Google Patents

Dispositif de preparation de la trame pour metiers a tisser pneumatiques.

Info

Publication number
EP0081502A1
EP0081502A1 EP19820901581 EP82901581A EP0081502A1 EP 0081502 A1 EP0081502 A1 EP 0081502A1 EP 19820901581 EP19820901581 EP 19820901581 EP 82901581 A EP82901581 A EP 82901581A EP 0081502 A1 EP0081502 A1 EP 0081502A1
Authority
EP
European Patent Office
Prior art keywords
woof
preparation device
aforesaid
characteri
zed
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
EP19820901581
Other languages
German (de)
English (en)
Other versions
EP0081502B1 (fr
Inventor
Johan T Peeters
Filip N Deconinck
Hugo A Markey
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.)
Picanol NV
Original Assignee
Picanol NV
Weefautomaten Picanol NV
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
Priority claimed from BE2/59215A external-priority patent/BE889255A/nl
Priority claimed from BE2/59272A external-priority patent/BE889677R/nl
Application filed by Picanol NV, Weefautomaten Picanol NV filed Critical Picanol NV
Priority to AT82901581T priority Critical patent/ATE12795T1/de
Publication of EP0081502A1 publication Critical patent/EP0081502A1/fr
Application granted granted Critical
Publication of EP0081502B1 publication Critical patent/EP0081502B1/fr
Expired legal-status Critical Current

Links

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
    • D03D47/36—Measuring and cutting the weft
    • D03D47/361—Drum-type weft feeding devices
    • D03D47/367—Monitoring yarn quantity on the drum
    • 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
    • D03D47/36—Measuring and cutting the weft
    • D03D47/361—Drum-type weft feeding devices
    • D03D47/362—Drum-type weft feeding devices with yarn retaining devices, e.g. stopping pins

Definitions

  • the present invention relates to a woof preparation device for pneumatic looms.
  • Woof preparation devices which mainly con ⁇ sist of a stationary stock-drum on which the woof thread is wound and of mechanical means which, for every shot, separate the necessary number of windings from the following ones and release same for delivery to the main blower of the loom.
  • the introduction speed of the woof on a pneumatic loom is sub ⁇ ject to variations from shot to shot and from one kind of thread to another.
  • the object of the invention is now to eliminate the problems mentioned hereinabove.
  • Figure 1 shows a schematic side view of a device accor ⁇ ding to claim 1
  • Figure 2 shows a block diagram of the circuit of the sender-receiver located adjacent to the winding end
  • Figure 3 shows a block diagram of the circuit of the other sender-receiver.
  • a shaft 2_ is rotatably mounted in a support 1 mounted on the frame of a pneumatic loom.
  • This shaft is made so as to be partially hollow and carries a thread winder 3_.
  • a stock-drum 4 is rotatably mounted on the shaft 2 .
  • the shaft 2_ can be driven by means of an electric motor 5, the feeding of which is controlled by two optic detectors 6 ⁇ and 1_.
  • a magnet 8_ carried by the support 1_ cooperates with a little iron block 9 ⁇ provided in the drum 4 to prevent any rotation of the drum.
  • a blocking component 14_ which can be shifted from the active to the pas ⁇ sive position and inversely by means of an electro-magnet 15.
  • the motor 5_ is fed with current as long as detector 6 ⁇ does not detect thread and this feeding stops as soon as detector 1_ de ⁇ tects thread.
  • Means not shown, known themselves in principle, may be provi- 15 ded to ensure the displacement of the windings from one end of the drum to the other.
  • the electro-magnet 15_ is being controlled either through a determined angular position of the main shaft or by means of
  • the drum 4 is preferably of a known type with a continuously adjustable diameter, so that the number of windings that are required per shot may remain constant, whatever the selected 35 weaving breadth. This, however, does not exclude the possibi ⁇ lity for the counter 18 to be adjustable.
  • the controlling device according to the invention is descri ⁇ bed hereinafter.
  • An oscillator 19_ (figure 2 ) controls an infrared diode of sen- der-receiver 6 ⁇
  • the rays that are reflected on a reflecting plane 20 of the stock-drum 4 are received by a photo-transis ⁇ tor, which is amplified in 21_ and further rectified in 2_2 to be sent to the switch 2_3_.
  • the plane 20 is covered by thread, the reflected signal is weak and the rectified signal is non-existent.
  • Switch 23 ⁇ then remains open.
  • a regulating circuit 24 controls a thyri ⁇ tor 2_5 ⁇ so that the motor 5_ starts rotating.
  • a tachometer with impulse giver 26 delivers a signal which is compared by the regulation circuit 24 with a value set by means of 2_7. Via the thyri ⁇ tor 2 , the circuit 24 regulates the speed of the motor 5_ so that it be ⁇ comes equal to the set value.
  • One may set 2J7, independently of the quantity of woof to be delivered, in such a way that the motor 5 ⁇ must start and stop a minimum number of times.
  • the fixing of the length of woof that is unwound each time takes place through counting a determined number of windings of the drum 4 with a known circumference during the pulling off of the thread and, when this number is reached, control ⁇ ling the magnet 1 of the blocking component 14.
  • the change of the aforesaid number of windings may be seen as a rough adjustement, whilst the fine adjustment is preferably carried out through modifying the circumference of the drum.
  • the sender-receiver 16 ⁇ (figure 3) is a part of a regulating circuit 28_ which tries to adjust always in the same working area the signals received by 16 ⁇ this in order to eliminate the influence of dust deposition on the thread, undesired
  • This signal is used as a "set" for a flip-flop 30 which via a power stage 3_1 controls the little magnet L5 either to clamp or to release the thread.
  • the detected signal is transmitted to the counter 3_3 only when both the signal of the control 32_ and of the detection 16 are high.
  • This counter 33_ is adjustable and will, for instance, send a reset signal to the flip-flop only at the third thread.
  • the magnet L5_ becomes energized and the thread is braked.
  • the adjustment of the detector 16_ and magnet 15 is such that the magnet, after a count of three, has just the time of a winding left to attract.
  • An additional blower 3_4 is also controlled via a valve 3_5 by the time burst 2_9 and is used for increasing the speed of the thread when unwinding; (this blower is in fact an auxiliary blower of the main blower).
  • a second valve 3_6 ensures that in the stopped position there still remains a slight pressure on the main blower 13_, so that the thread remains taut. In the case of the net falling out, the valve will be ruled out, whereby an unnecessary unwinding of the woof will be prevented.

Landscapes

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

Abstract

Dispositif de preparation de la trame pour metiers a tisser pneumatiques, du type comprenant un tambour stationnaire (4) sur lequel est enroule un fil de trame (10) avant d'etre transporte pneumatiquement au travers de la formation de l'encroix, tandis qu'a cette extremite d'approvisionnement un organe de blocage (14) est prevu, lequel est deplace d'une position de repos vers une position de travail de maniere a empecher le deroulement du fil (10) pendant une partie du cycle de tissage, ce dispositif se caracterisant en ce qu'a l'extremite d'approvisionnement susmentionnee un compteur d'enroulement (16) est prevu lequel permet de commander le deplacement de la position de repos a la position de travail de l'organe de blocage susmentionne (14).
EP19820901581 1981-06-17 1982-05-26 Dispositif de preparation de la trame pour metiers a tisser pneumatiques Expired EP0081502B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT82901581T ATE12795T1 (de) 1981-06-17 1982-05-26 Fadenspeicher fuer duesenwebmaschinen.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
BE259215 1981-06-17
BE2/59215A BE889255A (nl) 1981-06-17 1981-06-17 Inslagvoorbereidingsinrichting voor luchtgetouwen
BE2/59272A BE889677R (nl) 1981-07-20 1981-07-20 Inslagvoorbereidingsinrichting voor luchtgetouwen
BE259272 1981-07-20

Publications (2)

Publication Number Publication Date
EP0081502A1 true EP0081502A1 (fr) 1983-06-22
EP0081502B1 EP0081502B1 (fr) 1985-04-17

Family

ID=25661765

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19820901581 Expired EP0081502B1 (fr) 1981-06-17 1982-05-26 Dispositif de preparation de la trame pour metiers a tisser pneumatiques

Country Status (4)

Country Link
EP (1) EP0081502B1 (fr)
JP (1) JPS58500952A (fr)
DE (1) DE3263098D1 (fr)
WO (1) WO1982004446A1 (fr)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4627474A (en) * 1982-09-03 1986-12-09 Aktiebolaget Iro Yarn storing, feeding and measuring device
SE8207098D0 (sv) * 1982-12-10 1982-12-10 Iro Ab Anordning for temporer upplagring och matning av uppmetta garnlengder, foretredesvis till dysvevmaskiner
JPS59125946A (ja) * 1982-12-27 1984-07-20 津田駒工業株式会社 流体噴射式織機用多色自由交換型緯糸貯留装置
JPS59125944A (ja) * 1982-12-27 1984-07-20 日産自動車株式会社 断片織機の緯糸供給装置
CS249155B1 (en) * 1984-08-23 1987-03-12 Vladimir Svaty Method and device for weft thread picking
FR2576885B1 (fr) * 1985-02-01 1987-06-12 Superba Sa Dispositif accumulateur de fils textiles
IT1184759B (it) * 1985-04-22 1987-10-28 Roy Electrotex Spa Porgitrama per telai di tessitura
DE3862671D1 (de) * 1987-04-08 1991-06-13 Sulzer Ag Schussfadenspeicher fuer eine webmaschine.
JP2587961B2 (ja) * 1987-10-30 1997-03-05 津田駒工業株式会社 よこ入れ装置のよこ糸測長方法
DE8800216U1 (de) * 1987-11-29 1989-03-30 Aktiebolaget Iro, Ulricehamn Vorrichtung zum Speichern, Liefern und Messen eines Fadens
JPH0387717U (fr) * 1989-12-22 1991-09-06
BE1009172A3 (nl) * 1995-02-28 1996-12-03 Picanol Nv Grijperweefmachine met inslagdetectiemiddelen.
WO2020188762A1 (fr) * 2019-03-19 2020-09-24 オリンパス株式会社 Endoscope à ultrasons

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1345166A (fr) * 1961-10-31 1963-12-06 Sobrevin Soc De Brevets Ind Et Appareil pour la mesure à haute précision de la longueur d'un fil pendant son enroulement
FR1478294A (fr) * 1966-05-04 1967-04-21 Sulzer Ag Métier à tisser comportant un accumulateur intermédiaire du fil de trame
DE1929485A1 (de) * 1969-06-11 1970-12-17 Sobrevin Liefervorrichtung fuer Faeden an Webmaschinen,Strickmaschinen od.dgl.
NL7612811A (nl) * 1976-11-17 1978-05-19 Rueti Te Strake Bv Inrichting voor het vormen van een voorraadwikkel uit een van een garenvoorraad aangevoerde draad.
DE2836206B2 (de) * 1978-08-09 1981-03-26 Gebrueder Sulzer Ag, 8401 Winterthur Elektronische Steuereinrichtung für eine Webmaschine
BE889255A (nl) * 1981-06-17 1981-12-17 Picanol Nv Inslagvoorbereidingsinrichting voor luchtgetouwen

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO8204446A1 *

Also Published As

Publication number Publication date
JPS619423B2 (fr) 1986-03-24
DE3263098D1 (en) 1985-05-23
WO1982004446A1 (fr) 1982-12-23
EP0081502B1 (fr) 1985-04-17
JPS58500952A (ja) 1983-06-09

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