EP0167829B1 - Weft control device for circular looms - Google Patents

Weft control device for circular looms Download PDF

Info

Publication number
EP0167829B1
EP0167829B1 EP85106950A EP85106950A EP0167829B1 EP 0167829 B1 EP0167829 B1 EP 0167829B1 EP 85106950 A EP85106950 A EP 85106950A EP 85106950 A EP85106950 A EP 85106950A EP 0167829 B1 EP0167829 B1 EP 0167829B1
Authority
EP
European Patent Office
Prior art keywords
weft
reed
weft yarn
weft thread
circular
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
EP85106950A
Other languages
German (de)
French (fr)
Other versions
EP0167829A1 (en
Inventor
Franz X. Huemer
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
Priority to AT85106950T priority Critical patent/ATE51902T1/en
Publication of EP0167829A1 publication Critical patent/EP0167829A1/en
Application granted granted Critical
Publication of EP0167829B1 publication Critical patent/EP0167829B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • DTEXTILES; PAPER
    • D03WEAVING
    • D03DWOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D37/00Circular looms
    • DTEXTILES; PAPER
    • D03WEAVING
    • D03DWOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D51/00Driving, starting, or stopping arrangements; Automatic stop motions
    • D03D51/18Automatic stop motions
    • D03D51/34Weft stop motions

Definitions

  • the present invention relates to a device for monitoring the weft threads on a circular weaving machine, wherein the weft threads are unwound from the spool of the weaver that rotates in the shed along a circular path formed by a round reed, scanning means monitoring the weft thread in order to generate an electrical stop signal in the event of a weft fault .
  • Circular looms are generally known, in which a plurality of partial heald frames are arranged in a circle around the round reed of the machine and each carry a plurality of inner and outer healds for guiding a part of each of the two warp thread coulters distributed all around, which are used to form the weaving or traveling shed via revolving main shaft an opposing up and down alternating movement is given.
  • the weavers who are driven in rotation by the main shaft in the rotary shaft continuously feed the weft thread to be drawn off from the relevant bobbin in question into the traveling compartment.
  • the tubular fabric produced in this way is then pulled off and wound up flat.
  • Known devices of this type use for this purpose a lever on the shooter which is wrapped in a thread, which lever closes a contact on the shooter in the event of a thread break, whereupon a signal circuit on the shooter is closed, which signal A sensor on the reed is activated without contact.
  • this is first achieved by arranging on the weaving contactor a tilting bracket, which is acted upon by the drawn-off weft thread against the action of a restoring force, about an axis extending parallel to the weft thread bobbin, from which axis laterally arms project that arm parallel to the weft thread bobbin and from this resp. carry a ruler at a distance from the axis, which is at least partially wrapped in the weft thread and from which a switching arm directed against the reed protrudes, which in the event of a weft fault interacts with at least one signal transmitter part of a contactlessly activatable sensor system arranged on the reed.
  • Such a device is extremely simple and robust and is not subject to dust or any wear and tear. This device works safely at any shooter rotation speed and has a very high sensitivity and speed.
  • a machine base frame 1 on which a circular frame support 2 is supported, which has a round reed 3, a on / off switch 4 for the machine and further frame parts 5 for supporting shafts 6 wearing.
  • These shafts 6 are arranged in a known manner in a circle around the main shaft 8 of the machine and essentially form the shed-forming means of the machine.
  • the support 9 for the tissue withdrawal device is supported on the base frame 1, which is indicated here only by tissue withdrawal rollers 10.
  • a fabric spreader 14 is also effective in the trigger area.
  • the feed roller 15 for the warp threads on the left and the feed roller 16 for the warp threads on the right are visible on the circular loom shown.
  • warp threads 7 are divided into two sets of warp threads arranged all around and are drawn off in a known manner from groups of warp thread spools, not shown in any more detail.
  • One of these coulters is then raised to form the shed, while the other is guided downward from the height of the weaving plane by the so-called shed changing movement, so that a warp thread shed 7 'and a warp shed lower shed 7 "are created.
  • This so-called shed or traveling shed then runs at least one shooter 30, but usually several, around a horizontal circular path with a weft bobbin 31 (FIG.
  • stop signal 43 generated by a contactless sensor system 40 (FIG. 2) of a capacitive, inductive or magnetic type that can be activated by scanning means, the scanning means being supported on the respective weaver 30 by the weft thread 32 drawn off against the Effect of a restoring force act on tilting bracket 41, which acts as a switch in the event of a weft fault and interacts with at least one signal transmitter part 42 of the sensor system arranged on reed 3.
  • a contactless sensor system 40 FIG. 2 of a capacitive, inductive or magnetic type that can be activated by scanning means, the scanning means being supported on the respective weaver 30 by the weft thread 32 drawn off against the Effect of a restoring force act on tilting bracket 41, which acts as a switch in the event of a weft fault and interacts with at least one signal transmitter part 42 of the sensor system arranged on reed 3.
  • the tilt bracket 41 comprises a ruler 42 which extends parallel to the weft bobbin 31 and is at least partially wrapped around by the weft 32 that has been drawn off.
  • Arms 43 protrude from the ruler 42 at both ends and to the side of the weft bobbin 31, which pass into bearing pins 44 supported on the shooter 30, a switch arm 45 directed against the reed 3 protruding from the rocker arm 41.
  • the restoring force effective on the tilt bracket 41 can be generated by spring means or by torsional tension or by the dead weight of the tilt bracket.
  • the tilt bracket 41 preferably consists of a steel wire, the ruler 42 being able to carry a porcelain sleeve (not shown) for gentle thread guidance.
  • a device according to the invention for monitoring the weft threads on a circular loom results, which meets all the aforementioned requirements.
  • the measures described above permit easy retrofitting of already existing machines as well as the use of the weft thread monitoring device on other thread processing machines.
  • the tilt bracket 41 can be pivotally supported at another location, for example in the center of rotation of the weft bobbin 31.
  • the tilting bracket can carry one part of a light barrier, which part comes out of the area of a shielding screen on the shooter into the effective area of the other part of the light barrier on reed 3 in the event of a thread break, whereby a signal can be generated (not shown).

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Woven Fabrics (AREA)
  • Jib Cranes (AREA)
  • Treatment Of Fiber Materials (AREA)

Abstract

Weft threads on a circular loom which are wound off the respective bobbin of the weaving shuttle traveling in the weaving shed along a circular path formed by the circular reed, and transferred onto the fabric edge of the tubular fabric, are supervised by a scanner in order to generate an electric stop signal in the case of a weft thread fault. This results from the use of a non-contact sensory system of capacitive, inductive, opto-electric or magnetic kind, with the scanner means comprising a tipping lever supported on the respective shuttle and acted upon by the drawn-off thread against the effect of a restoring force, said tipping lever functioning like a switch, in the case of a weft thread fault, and combined with at least one signal transmitting component of the sensory system arranged on the reed. This permits the correct supervision of the existance of the weft threads wound off the bobbins of the circulating shuttles in order to stop the loom immediately, so as to avoid a weaving fault, in the case of a weft thread failure owing to weft thread breakage or depletion of the weft thread package, for example.

Description

Die vorliegende Erfindung betrifft eine Einrichtung zur Ueberwachung der Schussfäden an einer Rundwebmaschine, wobei die Schussfäden von der Spule des im Webfach entlang einer von einem Rundriet gebildeten Kreisbahn umlaufenden Webschütz abgewickelt werden, wobei Abtastmittel den Schussfaden überwachen, um bei einem Schussfadenfehler ein elektrisches Stoppsignal zu erzeugen.The present invention relates to a device for monitoring the weft threads on a circular weaving machine, wherein the weft threads are unwound from the spool of the weaver that rotates in the shed along a circular path formed by a round reed, scanning means monitoring the weft thread in order to generate an electrical stop signal in the event of a weft fault .

Es sind allgemein Rundwebmaschinen bekannt, bei welchen eine Mehrzahl Teilschäfte kreisförmig um das Rundriet der Maschine herum angeordnet sind und je eine Mehrzahl innere und äussere Weblitzen zur Führung jeweils eines Teils der zwei ringsumverteilten Kettfadenscharen tragen, denen zur Bildung des Web- bzw. Wanderfaches über die umlaufende Hauptwelle eine gegenläufige auf- und niedergehende Wechselbewegung erteilt wird. Die im Rundriet von der Hauptwelle umlaufend angetriebenen Webschützen tragen dabei den, von der betreffenden mitgeführten Spule abzuziehenden Schussfaden kontinuierlich in das Wanderfach ein. Das so erzeugte Schlauchgewebe wird dann abgezogen und flach zusammengelegt aufgewickelt.Circular looms are generally known, in which a plurality of partial heald frames are arranged in a circle around the round reed of the machine and each carry a plurality of inner and outer healds for guiding a part of each of the two warp thread coulters distributed all around, which are used to form the weaving or traveling shed via revolving main shaft an opposing up and down alternating movement is given. The weavers who are driven in rotation by the main shaft in the rotary shaft continuously feed the weft thread to be drawn off from the relevant bobbin in question into the traveling compartment. The tubular fabric produced in this way is then pulled off and wound up flat.

Dabei ist es wesentlich, dass ordnungsgemässe Vorhandensein der von den Spulen der umlaufenden Schützen abgezogenen Schussfäden sorgfältigst zu überwachen, um bei einem Schussfadenfehler, etwa durch Schussfadenbruch oder Erschöpfung der Schussfadenspule, die Maschine zur Vermeidung von Webfehler sofort abstellen zu können.It is essential that the correct presence of the weft threads drawn from the bobbins of the rotating shooters is carefully monitored in order to be able to immediately switch off the machine in order to avoid weaving errors in the event of a weft thread fault, for example due to weft thread breakage or exhaustion of the weft thread spool.

Bekannte Einrichtungen dieser Art (FR-A-1473899; CH-A-215 120) verwenden hierfür einen vom Faden umschlungenen Hebel am Schützen, welcher Hebel auf einen Fadenbruch hin einen Kontakt am Schützen schliesst, worauf ein Signalstromkreis am Schützen geschlossen wird, welches Signal berührungsfrei einen Sensor am Riet aktiviert.Known devices of this type (FR-A-1473899; CH-A-215 120) use for this purpose a lever on the shooter which is wrapped in a thread, which lever closes a contact on the shooter in the event of a thread break, whereupon a signal circuit on the shooter is closed, which signal A sensor on the reed is activated without contact.

Dies verlangt aber viele Bauteile sowie Stromübertragungsmittel vom Riet auf den Schützen zur Speisung dessen Signalstromkreises. Zudem sind solche Anordnungen relativ träge und störanfällig.However, this requires many components and power transmission means from the reed on the contactors to feed its signal circuit. In addition, such arrangements are relatively sluggish and prone to failure.

Es ist somit Aufgabe der vorliegenden Erfindung, eine Einrichtung zur Ueberwachung der Schussfäden an einer Rundwebmaschine zu schaffen, der die Nachteile des bekannten Standes der Technik nicht anhaftet.It is therefore an object of the present invention to provide a device for monitoring the weft threads on a circular loom which does not have the disadvantages of the known prior art.

Dies wird erfindungsgemäss zunächst erreicht, dass am Webschütz ein, vom abgezogenen Schussfaden gegen die Wirkung einer Rückstellkraft beaufschlagter Kippbügel um eine sich parallel zur Schussfadenspule erstreckende Achse kippbar angeordnet ist, von welcher Achse seitlich der Schussfadenspule Arme abragen, die ein zur Schussfadenspule paralleles und von dieser resp. der Achse distanziertes Lineal tragen, das wenigstens teilweise vom abgezogenen Schussfaden umschlungen ist und von dem ein gegen das Riet gerichteter Schaltarm abragt, der bei einem Schussfadenfehler mit mindestens einem, am Riet angeordneten Signalgeberteil eines berührungslos aktivierbaren Sensor-Systems zusammenwirkt.According to the invention, this is first achieved by arranging on the weaving contactor a tilting bracket, which is acted upon by the drawn-off weft thread against the action of a restoring force, about an axis extending parallel to the weft thread bobbin, from which axis laterally arms project that arm parallel to the weft thread bobbin and from this resp. carry a ruler at a distance from the axis, which is at least partially wrapped in the weft thread and from which a switching arm directed against the reed protrudes, which in the event of a weft fault interacts with at least one signal transmitter part of a contactlessly activatable sensor system arranged on the reed.

Eine solche Einrichtung ist ausserordentlich einfach und robust und unterliegt weder Störungen durch Verstaubung noch irgendeiner Abnützung. Diese Einrichtung funktioniert sicher bei jeder Schützenumlaufgeschwindigkeit und weist eine sehr hohe Ansprechempfindlichkeit und -geschwindigkeit auf.Such a device is extremely simple and robust and is not subject to dust or any wear and tear. This device works safely at any shooter rotation speed and has a very high sensitivity and speed.

Beispielsweise Ausführungsformen des Erfindungsgegenstandes sind nachfolgend anhand der Zeichnung näher erläutert.For example, embodiments of the subject matter of the invention are explained in more detail below with reference to the drawing.

Es zeigen:

  • Fig. 1 in einer Seitenansicht und in schematischer Darstellung eine Rundwebmaschine;
  • Fig. 2 in schematischer Darstellung in Seitenansicht die erfindungsgemässe Einrichtung zur Ueberwachung der Schussfäden der Anordnung gemäss Fig. 1, in grösserem Massstab; und
  • Fig. 3 ein Detail der Anordnung gemäss Fig. 2, in Frontansicht, in grösserem Massstab.
Show it:
  • Figure 1 is a side view and a schematic representation of a circular loom.
  • FIG. 2 shows a schematic illustration in side view of the device according to the invention for monitoring the weft threads of the arrangement according to FIG. 1, on a larger scale; and
  • Fig. 3 shows a detail of the arrangement of FIG. 2, in a front view, on a larger scale.

Die Rundwebmaschine gemäss Fig. 1 ruht in üblicher Weise auf einem Maschinen-Grundgestell 1, an dem sich ein kreisförmiger Rahmenträger 2 abstützt, der ein Rundriet 3, einen Ein- und Austastschalter 4 für die Maschine und weiter Rahmenteile 5 für die Abstützung von Schäften 6 trägt. Diese Schäfte 6 sind in bekannter Weise kreisförmig um die Hauptwelle 8 der Maschine herum angeordnet und bilden zum wesentlichen Teil die fachbildenden Mittel der Maschine. Im weiteren stützt sich am Grundgestell 1 der Träger 9 für die Gewebeabzugsvorrichtung ab, welche hier nur durch Gewebe-Abzugsrollen 10 angedeutet ist. Im Abzugsbereich ist zudem ein Gewebe-Breithalter 14 wirksam. Weiter sind an der gezeigten Rundwebmaschine die Einzugswalze 15 für die Kettfäden links und die Einzugswalze 16 für die Kettfäden rechts sichtbar. Diese Kettfäden 7, deren Verlauf nur angedeutet ist, sind in zwei ringsum angeordnete Kettfadenscharen aufgeteilt und werden in bekannter Weise von nicht näher gezeigten Gruppen von Kettfadenspulen abgezogen. Zur Bildung des Webfaches wird dann eine dieser Scharen angehoben, während die andere aus der Höhe der Webebene durch die sogenannte Fachwechselbewegung nach unten geführt wird, so dass ein Kettfadenoberfach 7' und ein Kettfadenunterfach 7" entsteht. In diesem sogenannten Web- oder Wanderfach läuft dann wenigstens ein Schützen 30, in der Regel aber mehrere, mit einer Schussfadenspule 31 (Fig. 2) auf einer horizontalen Kreisbahn um. Durch die Kreisbewegung der Schützen wird der jeweils von der Schussfadenspule abgewickelte Schussfaden 32 an den Geweberand 13 des erzeugten Schlauchgewebes abgegeben, so dass dieser Schussfaden in das Gewebe eingewoben werden kann. Das Schlauchgewebe kann dann nach oben abgezogen und zu einem flachen Schlauchgewebe zusammengelegt werden.1 rests in the usual way on a machine base frame 1 on which a circular frame support 2 is supported, which has a round reed 3, a on / off switch 4 for the machine and further frame parts 5 for supporting shafts 6 wearing. These shafts 6 are arranged in a known manner in a circle around the main shaft 8 of the machine and essentially form the shed-forming means of the machine. In addition, the support 9 for the tissue withdrawal device is supported on the base frame 1, which is indicated here only by tissue withdrawal rollers 10. A fabric spreader 14 is also effective in the trigger area. Furthermore, the feed roller 15 for the warp threads on the left and the feed roller 16 for the warp threads on the right are visible on the circular loom shown. These warp threads 7, the course of which is only indicated, are divided into two sets of warp threads arranged all around and are drawn off in a known manner from groups of warp thread spools, not shown in any more detail. One of these coulters is then raised to form the shed, while the other is guided downward from the height of the weaving plane by the so-called shed changing movement, so that a warp thread shed 7 'and a warp shed lower shed 7 "are created. This so-called shed or traveling shed then runs at least one shooter 30, but usually several, around a horizontal circular path with a weft bobbin 31 (FIG. 2) The circular movement of the shooters releases the weft thread 32 unwound from the weft thread bobbin at the fabric edge 13 of the tubular fabric produced, so that this weft thread can be woven into the fabric. The tubular fabric can then be pulled up and folded together to form a flat tubular fabric.

Soweit kann der Aufbau der gezeigten Rundwebmaschine dem bekannten Stand der Technik entsprechen, so dass sich eine weitergehende Erläuterung einer solchen Maschine erübrigt.As far as the structure of the circular loom shown can be the known prior art correspond, so that a further explanation of such a machine is unnecessary.

Das hier zu behandelnde Problem an einer solchen vorbeschriebenen Rundwebmaschine besteht nun darin, die von den Spulen 31 der umlaufenden Schützen 30 abgezogenen Schussfäden 32 sorgfältigst und funktionssicher zu überwachen, um bei einem Schussfadenfehler die Maschine mittels einem erzeugten Stoppsignal 43 sofort stillsetzen zu können.The problem to be dealt with here on such a circular loom as described now consists in carefully monitoring the weft threads 32 drawn from the bobbins 31 of the rotating shooters 30 so that the machine can be stopped immediately by means of a generated stop signal 43 in the event of a weft fault.

Hierfür ist nun vorgesehen, das Stoppsignal 43 von einem, von Abtastmitteln aktivierbares berührungsloses Sensor-System 40 (Fig. 2) kapazitiver, induktiver oder magnetischer Art erzeugen zu lassen, wobei die Abtastmittel einen am jeweiligen Webschützen 30 abgestützten, vom abgezogenen Schussfaden 32 gegen die Wirkung einer Rückstellkraft beaufschlagten Kippbügel 41 umfassen, der bei einem Schussfadenfehler als Schalter wirksam ist und mit mindestens einem, am Riet 3 angeordneten Signalgeberteil 42 des Sensor-Systems zusammenwirkt.For this purpose, it is now provided to have the stop signal 43 generated by a contactless sensor system 40 (FIG. 2) of a capacitive, inductive or magnetic type that can be activated by scanning means, the scanning means being supported on the respective weaver 30 by the weft thread 32 drawn off against the Effect of a restoring force act on tilting bracket 41, which acts as a switch in the event of a weft fault and interacts with at least one signal transmitter part 42 of the sensor system arranged on reed 3.

Um dabei den Umlaufweg des betroffenen Schützen bis zum Signalgeberteil 42 auf wenige Winkelgrade zu verkürzen, ist es vorteilhaft, am Riet 3, in Umfangsrichtung verteilt, eine Mehrzahl solcher Signalgeberteile 42 anzuordnen, wie das in Fig. 1 angedeutet ist.In order to shorten the circulation distance of the shooter concerned to the signal transmitter part 42 to a few angular degrees, it is advantageous to arrange a plurality of such signal transmitter parts 42 on the reed 3, distributed in the circumferential direction, as indicated in FIG. 1.

Wie die Fig. 2 und 3 mehr im Einzelnen zeigen, umfasst der Kippbügel 41 ein sich parallel der Schussfadenspule 31 erstreckendes Lineal 42, das wenigstens teilweise vom abgezogenen Schussfaden 32 umschlungen ist.As shown in FIGS. 2 and 3 in more detail, the tilt bracket 41 comprises a ruler 42 which extends parallel to the weft bobbin 31 and is at least partially wrapped around by the weft 32 that has been drawn off.

Hierbei ragen vom Lineal 42 beidendig und seitlich der Schussfadenspule 31 Arme 43 ab, welche in am Schützen 30 abgestützte Lagerzapfen 44 übergehen, wobei vom Kippbügel 41 ein gegen das Riet 3 gerichteter Schalterarm 45 abragt.Arms 43 protrude from the ruler 42 at both ends and to the side of the weft bobbin 31, which pass into bearing pins 44 supported on the shooter 30, a switch arm 45 directed against the reed 3 protruding from the rocker arm 41.

Je nach Ausführungsform des Kippbügels 41 und dessen Abstützung, die natürlich beliebig sein können, ist die am Kippbügel 41 wirksame Rückstellkraft durch Federmittel oder durch Torsionsspannung oder durch das Eigengewicht des Kippbügels erzeugbar.Depending on the embodiment of the tilt bracket 41 and its support, which can of course be any, the restoring force effective on the tilt bracket 41 can be generated by spring means or by torsional tension or by the dead weight of the tilt bracket.

Weiter besteht der Kippbügel 41 vorzugsweise aus einem Stahldraht, wobei das Lineal 42 für eine schonende Fadenführung eine Porzellanhülse tragen kann (nicht gezeigt).Furthermore, the tilt bracket 41 preferably consists of a steel wire, the ruler 42 being able to carry a porcelain sleeve (not shown) for gentle thread guidance.

Die sehr einfache Funktionsweise der erfindungsgemässen Einrichtung ist insbesondere der Fig. 2 entnehmbar. Danach schwenkt der das Lineal 42 umschlingende, von der Spule 31 zur Gewebekante 13 hin ablaufende Schussfaden 32 den Kippbügel 41 im Uhrzeigersinn gegen einen Anschlag 46 am Webschützen 30. Damit bleibt der Schalterarm 45 des Kippbügels 41 bei seinem Umlauf mit dem Schützen ausserhalb dem Wirkungsbereich mit dem Signalgeberteil 42 bzw. den Signalgeberteilen des Sensor-Systems 40. Bricht hingegen der Schussfaden 32, so fällt der Kippbügel 41 unter der Wirkung seiner Vorspannung im Gegenuhrzeigersinn gegen das Riet 3 hin bis zu einem Anschlag 47 in welcher, in Fig. 2 gestrichelt eingezeichneten Schaltlage der Schaltarm 45 bei seiner Vorbeibewegung am nächsten Signalgeberteil 42 diesen aktiviert, worauf letzterer das Stoppsignal 43 für die Maschine liefert.The very simple functioning of the device according to the invention can be seen in particular in FIG. 2. Thereafter, the weft thread 32, which wraps around the ruler 42 and runs from the bobbin 31 to the fabric edge 13, swivels the rocker arm 41 clockwise against a stop 46 on the shuttle 30. Thus, the switch arm 45 of the rocker arm 41 remains outside the effective range during its rotation with the shooter the signal transmitter part 42 or the signal transmitter parts of the sensor system 40. On the other hand, if the weft thread 32 breaks, the rocker arm 41 falls counter-clockwise against the reed 3 under the effect of its pretension up to a stop 47 in which, shown in dashed lines in FIG. 2 Switch position of the switching arm 45 when it moves past the next signal transmitter part 42, which then supplies the latter with the stop signal 43 for the machine.

Aus dem Vorbeschriebenen ergibt sich somit eine erfindungsgemässe Einrichtung zur Ueberwachung der Schussfäden an einer Rundwebmaschine, die allen vorgenannten Anforderungen gerecht wird. Insbesondere gestatten die vorbeschriebenen Massnahmen ein leichtes Umrüsten schon bestehender Maschinen wie auch die Verwendung der Schussfaden-Ueberwachungseinrichtung an anderen fadenverarbeitenden Maschinen.From the above, a device according to the invention for monitoring the weft threads on a circular loom results, which meets all the aforementioned requirements. In particular, the measures described above permit easy retrofitting of already existing machines as well as the use of the weft thread monitoring device on other thread processing machines.

Hierbei sind natürlich im Rahmen der vorliegenden Erfindung eine Reihe von Modifikationen möglich. So kann beispielsweise der Kippbügel 41 an anderem Ort, beispielsweise im Rotationszentrum der Schussfadenspule 31 schwenkbar abgestützt sein. Für eine optoelektrische Abtastung kann dabei der Kippbügel den einen Teil einer Lichtschranke tragen, welcher Teil bei einem Fadenbruch aus dem Bereich einer Abschirmblende am Schützen in den Wirkungsbereich des anderen Teils der Lichtschranke am Riet 3 gelangt, womit ein Signal erzeugbar ist (nicht gezeigt).A number of modifications are of course possible within the scope of the present invention. For example, the tilt bracket 41 can be pivotally supported at another location, for example in the center of rotation of the weft bobbin 31. For an optoelectric scanning, the tilting bracket can carry one part of a light barrier, which part comes out of the area of a shielding screen on the shooter into the effective area of the other part of the light barrier on reed 3 in the event of a thread break, whereby a signal can be generated (not shown).

Claims (1)

  1. A weft control device on a circular loom; the weft yarn being unwound from the weft yarn package on a shuttle traversing in the weaving shed on a circular path formed by a circular reed, and with feeler means controlling the weft yarn in order to generate an electric stop signal upon a weft thread fault, wherein a rocking lever (41) is disposed on the shuttle, rockably mounted on a pivot (44) extending parallel to the weft yarn package (31) and acted upon by the drawn-off yarn against the effect of a resilient force; from which pivot (44), arms (43) extend laterally to the weft yarn package (31) and which support a bar (42) parallel to the weft yarn package (31) and at a distance from this, respectively, the pivot (44), and which is at least partially wound around by the unwound weft yarn and extends from the switch arm (45) directed towards the reed and which, upon a weft yarn fault, interacts with at least one signal transmitting part (42) of a noncontact sensor system (40) which is capable of being activated and which is arranged on the reed (3).
EP85106950A 1984-06-08 1985-06-05 Weft control device for circular looms Expired - Lifetime EP0167829B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85106950T ATE51902T1 (en) 1984-06-08 1985-06-05 DEVICE FOR MONITORING THE WEFT THREADS ON A CIRCULAR WEAVING MACHINE.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH2798/84A CH663226A5 (en) 1984-06-08 1984-06-08 DEVICE FOR MONITORING THE Weft Threads On A ROUND WEAVING MACHINE.
CH2798/84 1984-06-08

Publications (2)

Publication Number Publication Date
EP0167829A1 EP0167829A1 (en) 1986-01-15
EP0167829B1 true EP0167829B1 (en) 1990-04-11

Family

ID=4241820

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85106950A Expired - Lifetime EP0167829B1 (en) 1984-06-08 1985-06-05 Weft control device for circular looms

Country Status (11)

Country Link
US (1) US4616681A (en)
EP (1) EP0167829B1 (en)
JP (1) JPH0639738B2 (en)
KR (1) KR860000432A (en)
AT (1) ATE51902T1 (en)
BR (1) BR8502712A (en)
CH (1) CH663226A5 (en)
DE (1) DE3577111D1 (en)
IN (1) IN162487B (en)
PH (1) PH23984A (en)
PT (1) PT80616B (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0290684U (en) * 1988-12-30 1990-07-18
AT401065B (en) * 1994-10-20 1996-06-25 Starlinger & Co Gmbh DEVICE FOR MONITORING THE WOTS ON A ROTARY WEAVING MACHINE
KR100868871B1 (en) * 2007-05-17 2008-11-14 구광일 Apparatus and circuit for detecting weft of circular loom
AT507558B1 (en) * 2009-01-22 2010-06-15 Starlinger & Co Gmbh DEVICE FOR REGULATING SHOOTING VOLTAGE ON A WEB PROTECTOR, WEB PROTECTORS EQUIPPED THEREWITH AND A WELDING MACHINE
CN103031654A (en) * 2011-09-29 2013-04-10 黄美昌 Warp thread rolling-free plastic circular weaving machine
CN104452049B (en) * 2014-12-14 2016-08-17 泰隆经纬(郑州)塑业有限公司 A kind of woven bag circle frame being provided with broken string and scarce line arresting gear
AT518058B1 (en) 2016-04-22 2017-07-15 Hehenberger Reinhold circular loom
EP3452648B1 (en) * 2016-05-04 2022-01-19 Innotec Lightweight Engineering & Polymer Technology GmbH Circular weaving machine and method for producing a hollow profile-like fabric
CN118065034B (en) * 2024-04-17 2024-06-18 德州学院 Circular loom with automatic braking mechanism

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2088045A (en) * 1935-03-23 1937-07-27 Saurer Ag Adolph Loom
CH215120A (en) * 1939-07-18 1941-06-15 Anonyme Saint Freres Societe Circular loom, equipped with an electric weft breaker.
US2433479A (en) * 1947-01-17 1947-12-30 Saint Freres Soc Weft stop motion for circular looms
US2512428A (en) * 1949-02-02 1950-06-20 Crompton & Knowles Loom Works Weft stop motion for narrow ware looms
FR1473899A (en) * 1965-10-27 1967-03-24 Weft breaker for looms equipped with weft spools
FR1540347A (en) * 1967-03-24 1968-09-27 Method for determining the change of the position of an organ in a guided part moving at high speed, and application to weaving machines
US3467149A (en) * 1967-05-26 1969-09-16 Heberlein & Co Ag Electronic device for surveying the presence of weft thread in weaving looms
FR1538492A (en) * 1967-07-25 1968-09-06 Ribbon loom shuttle weft
CH480475A (en) * 1967-10-20 1969-10-31 Gueth & Wolf Electronic weft thread monitor for looms
CH465529A (en) * 1968-07-02 1968-11-15 Saurer Ag Adolph Weft thread monitor for ribbon looms
PH16162A (en) * 1978-08-25 1983-07-18 Torii Winding Machine Co A mechanism for stopping a circular loom during weaving operation

Also Published As

Publication number Publication date
PT80616B (en) 1987-06-17
JPS61645A (en) 1986-01-06
BR8502712A (en) 1986-02-12
ATE51902T1 (en) 1990-04-15
PH23984A (en) 1990-02-09
JPH0639738B2 (en) 1994-05-25
CH663226A5 (en) 1987-11-30
IN162487B (en) 1988-06-04
KR860000432A (en) 1986-01-28
EP0167829A1 (en) 1986-01-15
PT80616A (en) 1985-07-01
US4616681A (en) 1986-10-14
DE3577111D1 (en) 1990-05-17

Similar Documents

Publication Publication Date Title
AT401065B (en) DEVICE FOR MONITORING THE WOTS ON A ROTARY WEAVING MACHINE
EP0167829B1 (en) Weft control device for circular looms
EP0365471B1 (en) Thread control device for a textile machine
CH617232A5 (en)
AT390285B (en) DEVICE FOR AUTOMATICALLY SWITCHING OFF A ROTARY WEAVE
DE3408565C2 (en)
AT507299B1 (en) DEVICE FOR TOUCH-FREE DRIVE OF A PROTECTION IN THE RIET OF A ROUNDWEB MACHINE
EP0167831A1 (en) Circular loom
DE1979729U (en) DEVICE FOR MONITORING THE LINE OF THREAD ON STRETCH TWISTING MACHINES AND THE LIKE.
CH654038A5 (en) DEVICE FOR FORMING WEB EDGES IN WEAVING MACHINES.
DE69909907T2 (en) Device for monitoring the thread reserve in weft supply devices for weaving machines
EP0160728B1 (en) Device for making leno shed in looms
CH660042A5 (en) ROUND WEAVING MACHINE.
EP0535203B1 (en) Circular weaving machine
DE4038256A1 (en) DEVICE FOR EFFECTIVELY TURNING THE SIDE EDGE OF A FABRIC IN A WEB CHAIR
DE2733525C2 (en) Weft thread conveying device for shuttleless looms
EP1079010A2 (en) Stop motion for yarn processing machines for monitoring yarn groups with different single yarn consumption
CH659834A5 (en) Circular weaving machine
CH657163A5 (en) ROUND WEAVING MACHINE.
DE3832100C2 (en) Device for detecting a weft break in a multi-phase weaving machine
DE2329303B2 (en) Device for monitoring the weft thread as it is being wound into the shuttle of shaft shed looms
DE1820291U (en) WEB MACHINE, IN PARTICULAR SHUTTER WEAVE MACHINE.
DE1216209B (en) Thread monitor for textile machines, especially for the chain threads of looms
CH357955A (en) Thread monitor on a stitch-forming machine equipped with a large number of needles, for example an embroidery machine, quilting machine and the like
CH658682A5 (en) Shuttle-guiding and driving device on a weaving machine, especially a circular weaving machine

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): AT DE FR GB IT

17P Request for examination filed

Effective date: 19860704

17Q First examination report despatched

Effective date: 19880125

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT DE FR GB IT

REF Corresponds to:

Ref document number: 51902

Country of ref document: AT

Date of ref document: 19900415

Kind code of ref document: T

REF Corresponds to:

Ref document number: 3577111

Country of ref document: DE

Date of ref document: 19900517

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19900524

Year of fee payment: 6

ITF It: translation for a ep patent filed

Owner name: STUDIO JAUMANN

ITTA It: last paid annual fee
GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)
ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19920401

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19930604

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19940603

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 19940615

Year of fee payment: 10

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Effective date: 19950228

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Effective date: 19950605

Ref country code: AT

Effective date: 19950605

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19950605