EP0238420B1 - Überwachungsanlage für die Anwesenheit von Einzelfäden in einem Parallelfadenfell - Google Patents

Überwachungsanlage für die Anwesenheit von Einzelfäden in einem Parallelfadenfell Download PDF

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Publication number
EP0238420B1
EP0238420B1 EP87420039A EP87420039A EP0238420B1 EP 0238420 B1 EP0238420 B1 EP 0238420B1 EP 87420039 A EP87420039 A EP 87420039A EP 87420039 A EP87420039 A EP 87420039A EP 0238420 B1 EP0238420 B1 EP 0238420B1
Authority
EP
European Patent Office
Prior art keywords
teeth
lap
parallel
advancing
detecting
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
Application number
EP87420039A
Other languages
English (en)
French (fr)
Other versions
EP0238420A1 (de
Inventor
G. Pierre Campin
Jean-Pierre Dumas
Michel Gré
Alain Legay
André Langlet
Yvon Madec
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.)
Le Textile Delcer SA
Original Assignee
Le Textile Delcer SA
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 Le Textile Delcer SA filed Critical Le Textile Delcer SA
Priority to AT87420039T priority Critical patent/ATE46926T1/de
Publication of EP0238420A1 publication Critical patent/EP0238420A1/de
Application granted granted Critical
Publication of EP0238420B1 publication Critical patent/EP0238420B1/de
Expired legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D51/00—Driving, starting, or stopping arrangements; Automatic stop motions
    • D03D51/18—Automatic stop motions
    • D03D51/20—Warp stop motions
    • D03D51/28—Warp stop motions electrical
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B35/00—Details of, or auxiliary devices incorporated in, knitting machines, not otherwise provided for
    • D04B35/10—Indicating, warning, or safety devices, e.g. stop motions
    • D04B35/14—Indicating, warning, or safety devices, e.g. stop motions responsive to thread breakage
    • D04B35/16—Indicating, warning, or safety devices, e.g. stop motions responsive to thread breakage with detectors associated with a series of threads

Definitions

  • the invention relates to a new type of detector for the presence of an individual thread in a sheet of parallel threads and more particularly in a warp knitting machine; it also relates to trades comprising such detectors.
  • the invention overcomes these drawbacks. It targets a detector device of the last type in question, which is effective, compact, sensitive, does not scratch the wire, does not modify its tension, has low inertia, or is operational in most positions, which the we did not know how to obtain industrially until then, and finally be economical to build, assemble, operate and finally does not complicate the journey of the wire.
  • the invention consists in using comb teeth which, in known manner, serve to regularly space each wire, but also, and this is new, serve to channel the flow of air blown to the base of the teeth and thus to move the relaxed or broken wire towards the detection means and this, with sufficient force, although generated by a low air flow.
  • comb teeth which, in known manner, serve to regularly space each wire, but also, and this is new, serve to channel the flow of air blown to the base of the teeth and thus to move the relaxed or broken wire towards the detection means and this, with sufficient force, although generated by a low air flow.
  • the teeth are full and the incident and reflected beams of the detection member or the detector wire are either on the same side of the tooth, or on either side thereof, but in above the tablecloth plane.
  • a warp knitting machine consists of two or more beams (1) from which run sheets of parallel threads (2) passing respectively in order over two stitches (3) and (4) between which a dividing comb (5) is disposed.
  • the tablecloth then passes over a tension bar (6), then arrives from there to the passettes (7) of the passette bar (8) to be knitted. The whole is integral with the building of the trade.
  • the dividing comb (5) comprises a plurality of teeth (10) regularly spaced as a function of the gauge of the dimension of a node and parallel to each other.
  • Each individual wire designated by the reference (11) passes between two successive teeth (10,12,13, 14) (see Figure 3).
  • the teeth position the wires together to prevent them from mixing during movement.
  • the teeth (10,12,13,14) are fixed by their base (15) in a common block (16) with several teeth, forming a comb holder, for example made of plastic or lead.
  • the teeth (10), made of sheet steel or any other metal resistant to abrasion, comprise in known manner at their points (17) a small orifice (18) through which passes a steel wire intended to facilitate placing the wires (11) between the teeth when threading.
  • the comb holder (16) is mounted on a tubular support (21) supplied with compressed air, at a pressure for example of the order of one to several decimetres of water column.
  • This support (21) is split over its entire length and this slot constitutes with the teeth (12, 13) of the comb the interdental blow nozzle.
  • this characteristic opening (22) is as small as possible, and channels all the air flow represented by dotted lines towards the point (17) of the teeth (10) and more precisely towards the window (20). It is this flow which moves the broken or relaxed wire (11), and causes it to excite the detector.
  • the detection system comprises a box (23) comprising a diode (or a laser) intended to emit through a projection lens (24) a light beam (25) which thus passes through the tunnel formed by the set of windows (20), successive teeth (10-14) parallel.
  • a light beam (25) which thus passes through the tunnel formed by the set of windows (20), successive teeth (10-14) parallel.
  • this light ray (25) has passed through all of the lights (20), it arrives on a mirror (26), for example of the retro-reflector type, to reflect and cross again these same windows (20) to come onto a another lens (27) associated with a receiver.
  • the system includes a signal amplifier (28) which is itself associated with the control (29) for stopping the loom or the alarm system.
  • the nozzle (22) is not placed exactly under the tooth but in the immediate vicinity thereof and as provided in the definition at its base. As before, the air flow is directed towards the tip of the tooth. This solution avoids clogging of the nozzle and the gap between two teeth.
  • the light beam (25) is no longer reflected at (26) but is detected directly by a cell similar to (27) arranged in place of the mirror (26).
  • This solution is more suited to large width knitting looms, that is 2.50 m and more wide.
  • the light beam or the detector wire can be placed in the immediate vicinity of the tip of the teeth and slightly outside thereof. This solution then makes it possible to use standard tooth combs.
  • these devices can be used successfully, not only in the warp knitting looms, but also in all other devices in which it is necessary to monitor the plies of parallel threads in movement, such as the weaving looms, the beams, gluing machines, warping machines.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Knitting Machines (AREA)
  • Looms (AREA)
  • Warping, Beaming, Or Leasing (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Electrophonic Musical Instruments (AREA)

Claims (8)

1. Vorrichtung zum Feststellen eines Fadens (11) in einer Lage (2) von Parallelfäden, bestehend aus:
- Mitteln (1, 3, 4) zum Vorbeiführen der Lage (2) von Parallelfäden (11);
- einem auf einer Seite in Nähe dieser vorbeilaufenden Lage (2) angeordneten Mittel zum Feststellen der Anwesenheit eines von der Lage (2) durch eine auf der anderen Seite derselben angeordnete Blaseinrichtung abgespreizten Fadens (11 );
- einem durch das Überwachungsmittel gesteuerten Mittel (28, 29) zum Stillsetzen der Mittel zum Vorbeiführen oder zum Auslösen eines Alarmsystems, dadurch gekennzeichnet, daß sie sich in bekannter Weise aus einer Vielzahl von parallelen Kammzinken (10, 12, 13, 14) zusammensetzt, zwischen denen die vorbeilaufenden Fäden (11) hindurchlaufen , und daß die Blaseinrichtung (21) an der Basis (15) dieser Zinken (10) angeordnet ist und den Luftstrom zur Spitze (17) dieser Zinken (10) richtet.
2. Überwachungsvorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Zinken (10) ein Fenster (20) aufweisen, das in dem zur Spitze (17) des Zinkens (10) gelegenen Bereich angeordnet ist, und daß das Überwachungsmittel (25) quer durch dieses Fenster (20) gerichtet ist.
3. Überwachungsvorrichtung nach einem der Ansprüche 1 und 2, dadurch gekennzeichnet, daß das Überwachungsmittel durch einen elektrostatisch aufgeladenen Draht gebildet ist, der in der Nähe der Spitze (17) des Zinkens (10) angeordnet ist.
4. Überwachungsvorrichtung nach einem der Ansprüche 1 und 2, dadurch gekennzeichnet, daß das Überwachungsmittel durch ein Strahlenbündel (25) gebildet ist, das zur Ebene der Lage (2) parallel und zu den vorbeilaufenden Fäden (11) orthogonal gerichtet ist und das den Tunnel (20) durchquert, der in den aufeinanderfolgenden Zinken (10, 12, 13, 14) ausgespart ist.
5. Überwachungsvorrichtung nach Anspruch 4, dadurch gekennzeichnet, daß das Strahlenbündel (25) den Tunnel der in den aufeinanderfolgenden Zinken (10, 12, 13, 14) ausgesparten Fenster (20) durchquert, dann von einem Spiegel (26) reflektiert wird, dann denselben Tunnel (20) durchquert und von einem Empfängerorgan (27) aufgenommen wird, das mit Steuerungsmitteln (28, 29) für die Stillsetzung der Maschine oder für ein Alarmsystem verbunden ist.
6. Überwachungsvorrichtung nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß die parallelen Zinken (10,12,13,14) mit Abständen in der Größenordnung eines Knotens angeordnet sind.
7. Überwachungsvorrichtung nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß sie den Teilkamm (5) einer Kettenwirkmaschine bildet.
8. Kettenwirkmaschine mit einer Überwachungsanlage gemäß einem der Ansprüche 1 bis 7.
EP87420039A 1986-02-13 1987-02-10 Überwachungsanlage für die Anwesenheit von Einzelfäden in einem Parallelfadenfell Expired EP0238420B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87420039T ATE46926T1 (de) 1986-02-13 1987-02-10 Ueberwachungsanlage fuer die anwesenheit von einzelfaeden in einem parallelfadenfell.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8602118 1986-02-13
FR8602118A FR2594147B1 (fr) 1986-02-13 1986-02-13 Detecteur de la presence d'un fil individuel dans une nappe de fils paralleles.

Publications (2)

Publication Number Publication Date
EP0238420A1 EP0238420A1 (de) 1987-09-23
EP0238420B1 true EP0238420B1 (de) 1989-10-04

Family

ID=9332194

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87420039A Expired EP0238420B1 (de) 1986-02-13 1987-02-10 Überwachungsanlage für die Anwesenheit von Einzelfäden in einem Parallelfadenfell

Country Status (6)

Country Link
US (1) US4727732A (de)
EP (1) EP0238420B1 (de)
JP (1) JPS62276062A (de)
AT (1) ATE46926T1 (de)
DE (1) DE3760679D1 (de)
FR (1) FR2594147B1 (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103397473B (zh) * 2013-08-07 2015-10-28 浙江金世达实业有限公司 一种经编机的断线保护系统
DE102015110519B3 (de) * 2015-06-30 2016-06-16 Protechna Herbst Gmbh & Co. Kg Überwachungseinrichtung zum Überwachen einer Fadenschar an einer Textilmaschine

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3530690A (en) * 1968-03-29 1970-09-29 Appalachian Electronic Instr Yarn inspection apparatus
US3575515A (en) * 1969-06-25 1971-04-20 Appalachian Electronic Instr Beam of yarn sheet monitoring apparatus
FR2061848A5 (de) * 1969-06-27 1971-06-25 Fiorucci Georges
DE1951916A1 (de) * 1969-10-15 1971-04-22 Sick Erwin Fa UEberwachungsvorrichtung fuer Kettfaeden von Kettenwirkmaschinen
DE2034815A1 (en) * 1970-07-14 1972-01-20 Fa. Erwin Sick, 7808 Waldkirch Yarn monitor - using laser beam and series of angled mirrors to give photo-electric yarn break detection
US3628030A (en) * 1970-10-15 1971-12-14 Appalachian Electronics Instr Broken end detection system for warpers utilizing novel optical system
US3738124A (en) * 1971-04-08 1973-06-12 Deering Milliken Res Corp Knitting machine stop motion
ES249980Y (es) * 1980-03-25 1981-01-01 Parahilos para telar perfeccionado
DE3200524A1 (de) * 1982-01-11 1983-07-21 Dura Tufting Gmbh, 6400 Fulda Fadenbruchabstelleinrichtung fuer textilmaschinen, insbesondere tuftingmaschinen
DE3335656C2 (de) * 1983-09-30 1986-08-28 Protechna Herbst GmbH & Co KG, 8012 Ottobrunn Vorrichtung zur fotoelektrischen Überwachung einer Kettenwirkmaschine

Also Published As

Publication number Publication date
FR2594147A1 (fr) 1987-08-14
JPS62276062A (ja) 1987-11-30
FR2594147B1 (fr) 1988-04-01
DE3760679D1 (en) 1989-11-09
ATE46926T1 (de) 1989-10-15
US4727732A (en) 1988-03-01
EP0238420A1 (de) 1987-09-23

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