EP0495229B1 - Détecteur de fil - Google Patents

Détecteur de fil Download PDF

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Publication number
EP0495229B1
EP0495229B1 EP91121911A EP91121911A EP0495229B1 EP 0495229 B1 EP0495229 B1 EP 0495229B1 EP 91121911 A EP91121911 A EP 91121911A EP 91121911 A EP91121911 A EP 91121911A EP 0495229 B1 EP0495229 B1 EP 0495229B1
Authority
EP
European Patent Office
Prior art keywords
thread
sensor
yarn
bristles
conveying channel
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
EP91121911A
Other languages
German (de)
English (en)
Other versions
EP0495229A1 (fr
Inventor
Peter Mueller
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.)
Staeubli AG
Original Assignee
Staeubli 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 Staeubli AG filed Critical Staeubli AG
Publication of EP0495229A1 publication Critical patent/EP0495229A1/fr
Application granted granted Critical
Publication of EP0495229B1 publication Critical patent/EP0495229B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03J—AUXILIARY WEAVING APPARATUS; WEAVERS' TOOLS; SHUTTLES
    • D03J1/00—Auxiliary apparatus combined with or associated with looms
    • D03J1/14—Apparatus for threading warp stop-motion droppers, healds, or reeds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H63/00—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package
    • B65H63/02—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package responsive to reduction in material tension, failure of supply, or breakage, of material
    • B65H63/024—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package responsive to reduction in material tension, failure of supply, or breakage, of material responsive to breakage of materials
    • B65H63/028—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package responsive to reduction in material tension, failure of supply, or breakage, of material responsive to breakage of materials characterised by the detecting or sensing element
    • B65H63/032—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package responsive to reduction in material tension, failure of supply, or breakage, of material responsive to breakage of materials characterised by the detecting or sensing element electrical or pneumatic
    • B65H63/0321—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package responsive to reduction in material tension, failure of supply, or breakage, of material responsive to breakage of materials characterised by the detecting or sensing element electrical or pneumatic using electronic actuators
    • B65H63/0327—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package responsive to reduction in material tension, failure of supply, or breakage, of material responsive to breakage of materials characterised by the detecting or sensing element electrical or pneumatic using electronic actuators using piezoelectric sensing means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/30—Handled filamentary material
    • B65H2701/31—Textiles threads or artificial strands of filaments

Definitions

  • the present invention relates to a thread monitor according to the preamble of claim 1.
  • a thread monitor is known from FR-A-2 343 067.
  • Thread monitors of this type are used wherever a transverse movement of a thread takes place, which can be the case, for example, when a thread is transferred from one organ to another or when a thread is removed from a supply.
  • Examples of this are thread feeders or multi-color changing devices for weaving machines, in particular for rapier weaving machines, or weaving preparation machines, such as, for example, knotting, splicing or drawing-in machines for warp threads.
  • the invention is now intended to provide a thread monitor that requires as little maintenance as possible, that has no wearing parts, that functions reliably under as many environmental conditions as possible, and that is also inexpensive.
  • the thread holding device shown serves to release a piece of thread F present in the form of a loop in a controlled manner under the action of a force pulling the thread from the thread holding device. It comprises an elongated conveying channel 1, which contains the thread loop 1 and thus fulfills the function of a thread store.
  • the loop is outside the delivery channel 1 on one leg in a fixed clamp and on its other leg, that is in the area of the free Thread end, fixed in a means of transport which pulls the thread F in the direction of arrow A out of the feed channel 1. So that this pulling out takes place in a controlled manner and the thread loop is retained until the very end, brake elements which act on the loop knee and hold the thread under tension are provided in the conveying channel 1.
  • the arrangement shown is part of a warp threading machine, as described for example in the international application PCT / CH90 / 00283 from Zellweger Uster AG.
  • the warp thread layer to be drawn is stretched on a vertical frame, which is positioned in front of the drawing-in machine and in front of its pull-in member which can be driven to oscillate perpendicular to the warp thread layer.
  • a so-called thread separation group is assigned to the pull-in member, along which the stretched warp threads are moved and separated and divided. After division, the warp threads are cut off and presented to the pull-in member, the thread holding device shown forming part of this thread presentation stage.
  • the thread presentation level is described in detail in international application no. PCT / CH 91/00229 and is not explained in more detail here.
  • the thread holding device essentially consists of the already mentioned conveyor channel 1, which is formed by two L-shaped rails 3 and 4 mounted on a base plate 2 which surround the shaft-like conveyor channel 1.
  • a continuous slot is formed between the two rails 3 and 4, which is covered by elastic bristles 5 made of a suitable material, for example made of steel or of a plastic such as nylon.
  • the bristles 5 are preferably embedded in a carrier tape, which is glued into a corresponding gradation on the inside of the right rail 4 in FIG. 1, and they are longer than the slot width at their part covering the slot.
  • the free head part of the bristles abuts the left rail 3, hereinafter referred to as the stop rail, and is bent thereon. This means that the bristles 5 press resiliently against the stop rail 3 with their head part.
  • the stop rail 3 has a window-like recess 6 towards the outlet end of the conveying channel 1, into which a piezoelectric sensor 7 is inserted, the wiring of which is located in a housing 8 connected to the stop rail 3 and / or to the base plate 2.
  • the operation of the piezo sensor is as follows: The thread loop F located in the conveying channel 1 is held at its knee, where the two loop legs meet, by a bristle 5 and jumps from one bristle to the next when pulled out of the conveying channel 1, whereby the Loop straight bristle 5 is pushed down and additionally tensioned and springs back into its initial position after passing the thread F.
  • the signal from the sensor 7 rated as confirmation of thread retraction.
  • the bristles 5 are guided in the area of the sensor 7 between two brackets 9 arranged on both sides of the bristle family, which prevent lateral deflection of the bristles.

Landscapes

  • Engineering & Computer Science (AREA)
  • Quality & Reliability (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Glass Compositions (AREA)
  • Manufacture, Treatment Of Glass Fibers (AREA)
  • Tension Adjustment In Filamentary Materials (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Auxiliary Weaving Apparatuses, Weavers' Tools, And Shuttles (AREA)
  • Filamentary Materials, Packages, And Safety Devices Therefor (AREA)
  • Geophysics And Detection Of Objects (AREA)
  • Sewing Machines And Sewing (AREA)
  • Resistance Heating (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)
  • Medicines Containing Plant Substances (AREA)
  • Control Of Combustion (AREA)
  • Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
  • Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
  • Paper (AREA)

Claims (2)

  1. Détecteur de fil pour détecter le passage d'un fil (F) se déplaçant dans la direction transversale, avec un canal convoyeur (1) pour recevoir le fil, avec des poils (5) qui s'appliquent par une extrémité élastiquement à un rail de butée (3) du canal convoyeur, caractérisé en ce que les poils tendent le fil contre une direction de convoyage (A) dans laquelle le fil est déplacé dans le canal convoyeur, en ce que le canal convoyeur (1) présente, noyé dans le rail de butée (3), un capteur (7) réagissant à la pression sur lequel passe le fil de façon que des poils (5) soient sortis par le fil et, lors du retour subséquent contre le rail de butée, emettent une impulsion de pression au capteur, et en ce que le capteur est réalisé pour détecter cette impulsion de pression.
  2. Dispositif de retenue de fil selon la revendication 1, caractérisé en ce que le capteur est réalisé sous forme de cristal de quartz piézo-électrique.
EP91121911A 1991-01-10 1991-12-20 Détecteur de fil Expired - Lifetime EP0495229B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH52/91 1991-01-10
CH52/91A CH682676A5 (de) 1991-01-10 1991-01-10 Fadenwächter.

Publications (2)

Publication Number Publication Date
EP0495229A1 EP0495229A1 (fr) 1992-07-22
EP0495229B1 true EP0495229B1 (fr) 1995-11-02

Family

ID=4178223

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91121911A Expired - Lifetime EP0495229B1 (fr) 1991-01-10 1991-12-20 Détecteur de fil

Country Status (15)

Country Link
US (1) US5428878A (fr)
EP (1) EP0495229B1 (fr)
JP (1) JPH04300349A (fr)
KR (1) KR920014969A (fr)
AT (1) ATE129688T1 (fr)
AU (1) AU8970591A (fr)
CA (1) CA2056686A1 (fr)
CH (1) CH682676A5 (fr)
CZ (1) CZ281497B6 (fr)
DE (1) DE59106824D1 (fr)
DK (1) DK0495229T3 (fr)
ES (1) ES2080881T3 (fr)
PT (1) PT99994B (fr)
RU (1) RU2046857C1 (fr)
TR (1) TR27356A (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE515344C2 (sv) * 1994-02-08 2001-07-16 Ericsson Telefon Ab L M Distribuerat databassystem
CN102851853A (zh) * 2012-09-28 2013-01-02 吴江市隆泰喷织厂 喷水织机的断线捕捉装置

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH283390A (de) * 1950-03-08 1952-06-15 Benninger Ag Maschf Elektrische Fadenwächter-Einrichtung an einem Zettelgatter.
GB706192A (en) * 1951-02-07 1954-03-24 Mackie & Sons Ltd J Improvements in stop mechanisms for drawing frames and similar textile machines
JPS52107361A (en) * 1976-03-04 1977-09-08 Nissan Motor Woof detecting device of weaving machine
DE2736979C2 (de) * 1977-08-17 1983-04-14 Karl Mayer Textil-Maschinen-Fabrik Gmbh, 6053 Obertshausen Vorrichtung zur Unterbrechung des Fadenablaufs bei Fadenbruch an Textilmaschinen
CH639486A5 (de) * 1979-09-14 1983-11-15 Mettler S Fr Soehne Ag Maschin Piezoelektrischer geber zum erzeugen eines von der fadenzugkraft eines textilfadens abhaengigen signals.
US4551591A (en) * 1984-06-18 1985-11-05 Jones Robert E Stop motion switch
CS253087B1 (en) * 1985-04-03 1987-10-15 Otakar Curda Thread motion guard
CH679598A5 (fr) * 1989-12-22 1992-03-13 Zellweger Uster Ag

Also Published As

Publication number Publication date
JPH04300349A (ja) 1992-10-23
ATE129688T1 (de) 1995-11-15
TR27356A (tr) 1995-01-17
PT99994B (pt) 1999-02-26
US5428878A (en) 1995-07-04
CZ281497B6 (cs) 1996-10-16
KR920014969A (ko) 1992-08-26
DK0495229T3 (da) 1995-12-18
AU8970591A (en) 1992-07-16
RU2046857C1 (ru) 1995-10-27
EP0495229A1 (fr) 1992-07-22
PT99994A (pt) 1994-03-31
ES2080881T3 (es) 1996-02-16
DE59106824D1 (de) 1995-12-07
CH682676A5 (de) 1993-10-29
CA2056686A1 (fr) 1992-07-11
CS5892A3 (en) 1992-08-12

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