EP0533617B1 - Métier à projectiles avec un dispositif changeur de trame - Google Patents

Métier à projectiles avec un dispositif changeur de trame Download PDF

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Publication number
EP0533617B1
EP0533617B1 EP92810638A EP92810638A EP0533617B1 EP 0533617 B1 EP0533617 B1 EP 0533617B1 EP 92810638 A EP92810638 A EP 92810638A EP 92810638 A EP92810638 A EP 92810638A EP 0533617 B1 EP0533617 B1 EP 0533617B1
Authority
EP
European Patent Office
Prior art keywords
weft
changer
thread
projectile
changer body
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 - Lifetime
Application number
EP92810638A
Other languages
German (de)
English (en)
Other versions
EP0533617A1 (fr
Inventor
Oskar Hübner
Rudolf Stauner
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.)
Itema Switzerland Ltd
Original Assignee
Sultex AG
Maschinenfabrik Rueti 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 Sultex AG, Maschinenfabrik Rueti AG filed Critical Sultex AG
Publication of EP0533617A1 publication Critical patent/EP0533617A1/fr
Application granted granted Critical
Publication of EP0533617B1 publication Critical patent/EP0533617B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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 invention relates to a projectile weaving machine with a multi-weft device; in particular, it relates to the drive and the weft changer of the multi-weft device.
  • a thread transfer device of the weft thread changer (usually called thread take-up device or retractor), on the one hand, after the weft insertion, the weft thread tip is taken from the shears in front of the shed and withdrawn with the help of a thread tensioner; on the other hand, the thread for the subsequent weft insertion is transferred to the projectile with the same or - in the case of a thread change - another thread transfer element with the participation of clip openers.
  • the changer body has guideways or slideways for the thread transfer elements. In the retracted position of the thread transfer elements, the desired change of color or weft thread can be carried out with the changer body by pivoting through one or more switching steps.
  • the weft changer turned out to be a speed-determining switching element. Particularly in the case of fabrics with, for example, four weft colors, in which maximum swivel movements of the changer were necessary due to the color sequence, it was necessary to reduce the speed considerably compared to two-color or mixed changer weaving machines.
  • This drive of the weft thread changer is complex and therefore there has been a desire for years for a direct drive using a highly dynamic servomotor with which the changer can be controlled directly.
  • Such a servo motor is, for example, electronically commutated and brushless and has a low-mass rotor with a low moment of inertia, which has permanent magnets of high field strength.
  • the invention is based, preferably a projectile weaving machine with a multi-weft device for at least four colors - to create, the weft changer should be controllable at a speed of the weaving machine of more than 350 revolutions per minute.
  • the projectile weaving machine designed according to the invention is characterized by a combination in which a weft thread changer has a low-mass changer body and low-mass thread transfer elements and the multi-weft device is directly driven by a highly dynamic servomotor.
  • the weaving machine can be operated at speeds greater than 350 rpm.
  • the changer body is made of aluminum, for example, and the slide rod of the thread transfer element is made of a mixture of plastic and carbon fibers.
  • FIGS. 1a and 1b The following components are shown schematically in FIGS. 1a and 1b: the thread supply 100, the weft thread 101, the thread brake 130, the thread tensioner 140, the thread clamp 21 of the thread transfer element (not shown), the projectile 120, which moves on the trajectory 102 after the launch , the shed 110 with the fabric 111, the edge thread clamp 150 and the scissors 160.
  • the tip of the weft thread 101 is transferred to the projectile 120 by opening the clip 21 and closing the projectile clip.
  • FIG. 1b the weft thread 101 is gripped by the edge thread clamp 150 and the clamp 21 moved to the shed and cut by the scissors 160, whereupon the weft thread 101 can be withdrawn by the thread transfer element with the help of the tensioner 140 and with the brake 130 closed.
  • the changer body 11 has grooves 12 with guide elements 13 for guiding the slide rod 2a; it can be pivoted about the shaft 16.
  • the changer body 11 is made of one lightweight material, preferably made of aluminum or a plastic.
  • the guide elements 13, in which the slide rods 2a are moved back and forth, consist of an abrasion-resistant material, preferably of a steel sheet.
  • the guide elements 13 can be glued into the grooves 12, for example. If the grooves 12 are provided with an abrasion-resistant coating, they can also assume the guiding function themselves - without additional guide elements 13.
  • the thread transfer member 2 with the clip 21 has a nose-like projection 22 on the side, which is used to transmit the back and forth movement of a drive, which is partially shown in FIG.
  • the projection 22 preferably consists of a separate part made of hardened steel, which is pressed into a corresponding bore in the slide rod 2a.
  • the two grooves 23 serve as recesses for a clip opener, not shown; their meaning is not relevant to the present invention and therefore need not be explained in more detail here.
  • the slide rods 2a can be produced, for example, from a plastic plate by means of milling.
  • the plastic plate is preferably made of carbon fiber reinforced PEEK (polyether ether ketone);
  • a polyamide can also be used instead of PEEK.
  • 2 shows a slide rod 2a which has a rectangular cross section. However, the cross-section could also be trapezoidal, for example, as in the known steel retractors. Lubrication can be dispensed with when using a sliding-friendly plastic.
  • the combination according to the invention shown in FIG. 3 consists of the highly dynamic servo motor 3 and the low-mass weft changer 1.
  • the motor 3 and the changer body 11 are connected via a toothed belt drive 31 (gear 32) and the shaft 16.
  • a Locking segment 17, which has grooves 18 for a lever of a locking device, not shown a deflection of the changer position from the predetermined positions can be prevented.
  • the locking can also be carried out by means of magnetic / electromagnetic means).
  • the locking device only has to take over a guard function: in the event of a deviation from the desired position of the changeover position, a correction signal is generated which is transmitted to the servo motor.
  • the drive 4 for the back and forth movement of the thread transfer member 2 consists of the following parts: the slide 41, the driver 42, the connecting plate 43, the pivotable lever 45 (or 45 ') and the guide 49 of the slide 41.
  • the pivoting movement of the lever 45 between the rear and front (dash-dotted lines) position is indicated by the double arrow 46.
  • the slide 41 moves parallel - and at the same height - to the slide rod 2a.
  • FIG. 3 For the sake of clarity, various simplifications have been made in FIG. 3: guide tubes for the weft threads on the changer body 11 between the shaft 16 and grooves 12 are not shown. Likewise, no guide elements 13 (see FIG. 2) are shown in the grooves 12. Furthermore, only one of four thread transfer elements 2 is shown again.
  • the lateral projection 22 on the slide rod 2a serves on the one hand for coupling to the slide 41 by means of the driver 42; on the other hand, this projection 22, together with the arcuate groove 29, in which the projection 22 is guided when the weft thread changer 1 is pivoted, prevents the inactive ones from being displaced Thread transfer elements 2 in the weft direction.
  • a second piece of the guide groove 29 is in mirror image above the horizontal plane, which is given by the sliding movement of the slide rod 2a (center line) and the slide 41.
  • the use of the directly driven multi-weft device in the projectile weaving machine according to the invention is particularly advantageous with regard to the automation of the weaving operation which is continuously advanced.
  • the optimal operating parameters which depend, for example, on the type of yarn, the weft repeat and the weaving width, can be set quickly and easily.
  • a program control also allows, for example in the case of automatic shot error corrections, to have the multi-shot device reset in a simple manner. Since the space required for the direct drive is significantly less than that of the mechanical control units, there is advantageously also better accessibility for adjustment and service work.
  • a freely programmable direct drive enables standardization with regard to the number of different weft threads.

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

Claims (5)

  1. Métier à tisser à projectile avec un dispositif à plusieurs trames, dont le changeur de fil de trame (1) comporte un corps changeur (11) de faible masse et des organes de transfert de fil (2) de faible masse, caractérisé en ce que le dispositif à plusieurs trames est directement entraîné par un servo-moteur (3) à dynamique élevée, la densité du corps changeur (11) étant nettement inférieure à la densité de l'acier et la tige de glissement (2a) de l'organe de transfert de fil (2) étant réalisée dans un mélange de matière plastique et de fibres de renfort.
  2. Métier à tisser à projectile selon la revendication 1, caractérisé en ce que les fibres de renfort des tiges de glissement (2a) sont en carbone.
  3. Métier à tisser à projectile selon la revendication 1 ou 2, caractérisé en ce que la matière plastique est de la polyétheréthercétone (PEEK).
  4. Métier à tisser à projectile selon l'une des revendications 1 à 3, caractérisé en ce que le corps changeur (11) présente des rainures (12) avec des éléments de guidage (13) résistants à l'usure par friction pour le guidage des organes de transfert de fil (2).
  5. Métier à tisser à projectile selon la revendication 4, caractérisé en ce que les éléments de guidage (13) sont réalisés dans une tôle d'acier et le matériau du reste du corps changeur (11) est de l'aluminium.
EP92810638A 1991-09-19 1992-08-21 Métier à projectiles avec un dispositif changeur de trame Expired - Lifetime EP0533617B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH278391 1991-09-19
CH2783/91 1991-09-19

Publications (2)

Publication Number Publication Date
EP0533617A1 EP0533617A1 (fr) 1993-03-24
EP0533617B1 true EP0533617B1 (fr) 1996-06-05

Family

ID=4241498

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92810638A Expired - Lifetime EP0533617B1 (fr) 1991-09-19 1992-08-21 Métier à projectiles avec un dispositif changeur de trame

Country Status (6)

Country Link
US (1) US5247968A (fr)
EP (1) EP0533617B1 (fr)
JP (1) JPH07189077A (fr)
CN (1) CN1034596C (fr)
DE (1) DE59206475D1 (fr)
RU (1) RU2046856C1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6494744B1 (en) * 2001-06-11 2002-12-17 Wieson Electronic Co., Ltd. Connector assembly
SE522719C2 (sv) * 2003-03-25 2004-03-02 Texo Ab Anordning vid vävmaskin
DE50308119D1 (de) * 2003-07-10 2007-10-18 Staeubli Gmbh Schussfaden-Wechselvorrichtung für eine Webmaschine
CN101314881B (zh) * 2008-06-25 2011-03-23 硕奇科技股份有限公司 织布打样机的选色机构
ITUB20160421A1 (it) * 2016-02-01 2016-05-01 Rinaldo Sperotto PRESENTATRICE ROTATIVA per macchine da tessere a preselezione meccanica e comando elettronico

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE942979C (de) * 1954-02-06 1956-05-09 Sulzer Ag Vorrichtung zum wahlweisen Zufuehren von zwei oder mehr Schussfaeden fuer Webmaschine
FR2523603A1 (en) * 1982-03-19 1983-09-23 Cheboxarsky Mashstr Zavod Shuttleless loom control - uses hydraulic system to connect programmer to colour change unit
NL8500301A (nl) * 1985-02-04 1986-09-01 Wisselink S Textielfabrieken B Inslagwisselsysteem aan een weefmachine.
EP0294576A1 (fr) * 1987-06-09 1988-12-14 GebràœDer Sulzer Aktiengesellschaft Projectile synthétique et dispositif pour la commande dans les métiers à tisser
DE58902024D1 (de) * 1988-04-25 1992-09-17 Sulzer Ag Webmaschine.
DE58901019D1 (de) * 1988-07-08 1992-04-30 Sulzer Ag Verfahren zur kettspannungssteuerung und webmaschine mit kettspannungsorgane.
CH681548A5 (fr) * 1989-05-16 1993-04-15 Sulzer Ag

Also Published As

Publication number Publication date
CN1034596C (zh) 1997-04-16
RU2046856C1 (ru) 1995-10-27
EP0533617A1 (fr) 1993-03-24
US5247968A (en) 1993-09-28
JPH07189077A (ja) 1995-07-25
DE59206475D1 (de) 1996-07-11
CN1070697A (zh) 1993-04-07

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