EP0362089A1 - Schussfadenzufuhrvorrichtung für schützenlose Webmaschinen - Google Patents

Schussfadenzufuhrvorrichtung für schützenlose Webmaschinen Download PDF

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Publication number
EP0362089A1
EP0362089A1 EP89420365A EP89420365A EP0362089A1 EP 0362089 A1 EP0362089 A1 EP 0362089A1 EP 89420365 A EP89420365 A EP 89420365A EP 89420365 A EP89420365 A EP 89420365A EP 0362089 A1 EP0362089 A1 EP 0362089A1
Authority
EP
European Patent Office
Prior art keywords
needles
coupled
needle
arc
weft threads
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.)
Withdrawn
Application number
EP89420365A
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English (en)
French (fr)
Inventor
Pétrus Marsande
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0362089A1 publication Critical patent/EP0362089A1/de
Withdrawn legal-status Critical Current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
    • D03D47/38—Weft pattern mechanisms

Definitions

  • the present invention relates to weaving looms without shuttle and it relates more particularly, in these machines, the device for feeding the weft threads.
  • the device for feeding the weft threads consists of needles through the eyes of which pass the different weft threads coming from bobbins, said needles being driven in an alternating "up and down” movement. "Controlled by a selection mechanism making it possible to successively present said weft threads with a lance which inserts them into the crowd of warp threads in the order provided for making the fabric.
  • this device does not include more than eight needles which allows only eight weft colors to be inserted so that, if more colors are desired, two devices must be paired side by side. This results in many delicate adjustments to the grips of the wires by the lance, the appreciable increase in its strokes and a higher rate of "breakage".
  • These devices are characterized by the fact that the needles are arranged in a fan shape, perpendicular to the weft, so that, when they are operated radially, their ends converge towards a single point so that the weft threads which they successively entrain are are presented in the same place with respect to the initial position of the lance.
  • Patent CH-A-418,248 also claims pneumatic means for driving the needles comprising double-acting pistons.
  • the present invention provides another device which consists in motorizing each weft feed needle, so as to give it complete independence from the other needles.
  • an electric motor of the stepping type, is assigned to each needle. It drives the rotation of an eccentric which actuates a link coupled to a bar, one end of which is trapped in a fixed point and the other end of which is made integral with the needle to be operated. This results in the oscillation of the bar and the linear reciprocating movement of the needle.
  • the needles are arranged in a fan shape and each guided in slides provided in a circular arc box fixed to the loom by adjustable means.
  • the electric motors are fixed on two facing plates secured to the support and arranged in an arc of a circle and staggered in two rows per plate so as to accommodate between them the eccentrics and the rods which penetrate into the housing and are mate to the oscillating bars driving the needles.
  • the electric motors are supplied individually by electronic means with computerized control managed by the traditional reading selection mechanism, or by any other known system.
  • the reference 1 designates the box in the form of an arc of a circle, hollowed out by a cavity 2 which opens laterally at 3 and above at 4.
  • the device is designed to present sixteen frame colors. It therefore comprises sixteen needles 7 arranged as a fan as shown in FIG. 2, so that their axes all converge towards the common point 0.
  • Each needle 7 is guided in two slides 8 reserved on either side of the opening 3 made on the front of the housing 1.
  • the motors 9 fixed to the plate 5 are each equipped with a flywheel 11 with an eccentric axis 12, while the motors 10 fixed to the plate 6 are also each provided with a flywheel 13 with eccentric 14.
  • the diameter of the flywheel 12 is slightly lower than that of the steering wheel 11.
  • the eccentrics 12 and 14 of the flywheels 11 and 13 driven by the motors 9 and 10 of the upper and lower rows are coupled to rods 15 by means of ball joints 16.
  • the rods 15 are connected to bars 17 by means of ball joints 18 capable of sliding on said bars which are arranged in the cavity 2 of the housing 1.
  • the rods 15 for coupling the flywheels 11 and 13 with the bars 17 of the motors located in the upper rows are longer than the others, but the sixteen rods 15 are adjustable in length micrometrically. By varying the length of the rods 15, the needle stroke 7.
  • the rear face of the housing 1 is equipped with sixteen rings 21 arranged in an arc of a circle and whose internal bore is bevelled to retain the free end of the bars 17 and allow a slight sliding there, as shown in FIG. 1.
  • the other end of the bars 17 is coupled to the needles 7 by means of a pin 22 made integral with the needle which it couples with a lateral locking screw.
  • connection plate 19 is fixed to the supports in an arc of a circle 5 and 6 by means of an adjustable articulation 20. This plate 19 makes it possible to adapt the device for feeding the weft threads to the loom, as illustrated in FIG. 2.
  • the electric motors 9 and 10 are each supplied with current by a managed switching center, either by traditional means of selecting trades without Jacquard type shuttles for example, but not exclusively, or by computerized electronic means.
  • the electric pulse supplied to the selected motor 9, 10, causes the rotation of a turn of the flywheel 11,13 during which the descent then the ascent of the needle 7 which is coupled there by the rod 15 and the bar 17.
  • the eccentric 12,14 drives the rod 15 in a back and forth movement which causes the oscillation of the prison bar 17, by one of its ends, of the 'corresponding ring 21, said bar causing the linear reciprocating movement of "up and down" of the needle 7 chosen and, therefore, of the weft thread that it retains.
  • each needle 7 moves to the common point 0 which is the center of convergence of the sixteen needles.
  • the sixteen weft threads are successively presented in the same place, which results in only one adjustment and a reduced stroke of the lance which carries them individually into the crowd.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
EP89420365A 1988-09-27 1989-09-26 Schussfadenzufuhrvorrichtung für schützenlose Webmaschinen Withdrawn EP0362089A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8812874 1988-09-27
FR8812874A FR2636979B1 (fr) 1988-09-27 1988-09-27 Dispositif d'alimentation des fils de trame pour metiers a tisser sans navette

Publications (1)

Publication Number Publication Date
EP0362089A1 true EP0362089A1 (de) 1990-04-04

Family

ID=9370604

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89420365A Withdrawn EP0362089A1 (de) 1988-09-27 1989-09-26 Schussfadenzufuhrvorrichtung für schützenlose Webmaschinen

Country Status (2)

Country Link
EP (1) EP0362089A1 (de)
FR (1) FR2636979B1 (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0598264A1 (de) * 1992-11-16 1994-05-25 Picanol N.V. Vorrichtung zum Auswählen und Zustellen von Schussfäden für eine Webmaschine
EP0896075A2 (de) * 1997-08-07 1999-02-10 NUOVA VAMATEX S.p.A. Schussfadenzubringvorrichtung für Webmaschinen
WO2014037282A2 (en) 2012-09-06 2014-03-13 Picanol Apparatus for presenting weft threads
EP4310233A1 (de) * 2022-07-19 2024-01-24 Picanol Vorrichtung zum auswählen und präsentieren von schussfäden

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH418248A (de) * 1964-10-26 1966-07-31 Scheffel Walter Farbenwechselapparat für schützenlose Webmaschinen
CH418249A (de) * 1964-10-26 1966-07-31 Scheffel Walter Farbenwechselapparat für schützenlose Webmaschinen
US3782421A (en) * 1972-06-01 1974-01-01 Rockwell International Corp Weft yarn control device
GB2059459A (en) * 1979-10-04 1981-04-23 Saurer Ag Adolph Weft selctors

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH418248A (de) * 1964-10-26 1966-07-31 Scheffel Walter Farbenwechselapparat für schützenlose Webmaschinen
CH418249A (de) * 1964-10-26 1966-07-31 Scheffel Walter Farbenwechselapparat für schützenlose Webmaschinen
US3782421A (en) * 1972-06-01 1974-01-01 Rockwell International Corp Weft yarn control device
GB2059459A (en) * 1979-10-04 1981-04-23 Saurer Ag Adolph Weft selctors

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0598264A1 (de) * 1992-11-16 1994-05-25 Picanol N.V. Vorrichtung zum Auswählen und Zustellen von Schussfäden für eine Webmaschine
BE1006347A3 (nl) * 1992-11-16 1994-07-26 Picanol Nv Inrichting voor het presenteren van inslagdraden bij weefmachines.
US5400834A (en) * 1992-11-16 1995-03-28 Picanol, N.V. Apparatus for selectively moving weft feeders between a rest position and a feed position
EP0763613A2 (de) 1992-11-16 1997-03-19 Picanol N.V. Vorrichtung zum Auswählen und Zustellen von Schussfäden für eine Webmaschine
EP0763613A3 (de) * 1992-11-16 1997-10-01 Picanol Nv Vorrichtung zum Auswählen und Zustellen von Schussfäden für eine Webmaschine
EP0896075A2 (de) * 1997-08-07 1999-02-10 NUOVA VAMATEX S.p.A. Schussfadenzubringvorrichtung für Webmaschinen
EP0896075A3 (de) * 1997-08-07 1999-06-16 NUOVA VAMATEX S.p.A. Schussfadenzubringvorrichtung für Webmaschinen
WO2014037282A2 (en) 2012-09-06 2014-03-13 Picanol Apparatus for presenting weft threads
EP4310233A1 (de) * 2022-07-19 2024-01-24 Picanol Vorrichtung zum auswählen und präsentieren von schussfäden
WO2024017541A1 (en) * 2022-07-19 2024-01-25 Picanol Device for selecting and presenting weft threads

Also Published As

Publication number Publication date
FR2636979A1 (fr) 1990-03-30
FR2636979B1 (fr) 1990-11-02

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