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EP0716171B1 - Weft tensioning and detecting device for jet looms - Google Patents

Weft tensioning and detecting device for jet looms Download PDF

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Publication number
EP0716171B1
EP0716171B1 EP95118267A EP95118267A EP0716171B1 EP 0716171 B1 EP0716171 B1 EP 0716171B1 EP 95118267 A EP95118267 A EP 95118267A EP 95118267 A EP95118267 A EP 95118267A EP 0716171 B1 EP0716171 B1 EP 0716171B1
Authority
EP
European Patent Office
Prior art keywords
weft
thread
thread guide
guide channel
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
EP95118267A
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German (de)
French (fr)
Other versions
EP0716171A3 (en
EP0716171A2 (en
Inventor
Adnan Dr. Wahhoud
Valentin Krumm
Hans-Dieter Dr. Scorl
Ulrich Löhr
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Lindauer Dornier GmbH
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Lindauer Dornier GmbH
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Filing date
Publication date
Application filed by Lindauer Dornier GmbH filed Critical Lindauer Dornier GmbH
Publication of EP0716171A2 publication Critical patent/EP0716171A2/en
Publication of EP0716171A3 publication Critical patent/EP0716171A3/en
Application granted granted Critical
Publication of EP0716171B1 publication Critical patent/EP0716171B1/en
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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
    • D03D47/28—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms wherein the weft itself is projected into the shed
    • D03D47/30—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms wherein the weft itself is projected into the shed by gas jet
    • D03D47/3066—Control or handling of the weft at or after arrival
    • D03D47/308—Stretching or holding the weft
    • 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
    • D03D47/28—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms wherein the weft itself is projected into the shed
    • D03D47/30—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms wherein the weft itself is projected into the shed by gas jet
    • D03D47/3066—Control or handling of the weft at or after arrival
    • D03D47/3073—Detection means therefor
    • 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
    • D03D51/34—Weft stop motions

Definitions

  • the invention relates to a weft stretching and detection device for Jet looms, one in the area of the weft arrival side of a Webblattes integrated first weft guard can be subordinated.
  • From DE-PS 32 00 637 C2 is such a weft tension and Detection device for jet looms known.
  • This facility is also a first weft guard, which in the area of Weft arrival side of the reed is integrated in the reed, subordinate.
  • the known tensioning device for stretching and holding the inserted weft thread is provided with an element acting transversely to the weft direction, which deflects the head part of the inserted weft thread protruding from the shed with respect to the weft direction by means of an auxiliary air flow.
  • a second weft monitor is integrated in a thread guide part above the tensioning device. This thread monitor sends a signal to the weaving machine control when the weft thread exceeds its desired length by a predetermined amount, as is the case with a weft burst, for example.
  • the distance between the second weft guard and the Tensioning device should be chosen so large that even such a briefly stretched weft thread does not reach the second weft monitor.
  • the known weft tensioning and detection device is of hers Construction not suitable to detect a weft break in weft threads that should not be stretched by a thread deflecting device, e.g. at a portion of wefts may be used to manufacture certain fabrics.
  • a weft stretching and detection device which is arranged at the outlet of a reed and how the reed itself is connected to the sley of a weaving machine.
  • the device has a weft thread input area, which has a thread guide channel lying in a first arrangement level downstream in the weft insertion direction.
  • provisions are made for stretching the weft in the manner of two opposing openings of a first and a second flow channel, the air flow from the first flow channel to the second flow channel bridging the thread guide channel located in the first arrangement level.
  • the second flow channel merges into a second arrangement level and here forms a second thread guide channel.
  • Corresponding weft monitors, which are connected to the two thread guide channels, are not shown; however, the arrangement of second weft monitors is a matter of course for a person skilled in the art.
  • the object of the invention is to provide a device according to the preamble of claim 1 like that train that one from the longitudinal stretching behavior of the weft short-term resulting during its movement through the entry channel Excess length is not erroneously detected as a shot break and a Loom stop caused.
  • the weft stretching and detection device designed as a separate component 1 is gem.
  • Fig. 1 connected to the weft exit end of the reed 2 of a jet loom.
  • the reed 2 consists of a lower and an upper frame rail 3, 4, in which the ends of the reed teeth 5 are bordered.
  • the leaf teeth 5 form a recess 6.
  • Said recess 6 of all leaf teeth 5 forms an open entry channel 6 for the weft thread 7 that extends over the weaving width.
  • the weft thread entry in the entry channel 6 and thus in the shed, not shown, and the means used for this purpose are known, so that further explanations are not required for this.
  • a first weft monitor 8 integrated in the weft direction A is in a known manner. This is of optoelectronic Kind; its shape is adapted to that of the reed teeth 5.
  • the first weft monitor 8 is used to monitor whether the registered Weft 7 has reached its desired length and is not too short. Lies a so-called short shot before, the thread 7 does not pass the first Weft monitor 8, then the weft monitor 8 gives a signal to the shown weaving machine control, by which the weaving machine is switched off becomes.
  • the reed 2 is immediately after the reed 2 supporting sley (not shown) with the features of the invention trained device arranged as component 1.
  • the base body 9 there is a weft input area 10 - shown partly in section - with a weft guide channel 11 which forms the continuation of the weft insertion channel 6 in the reed 2.
  • the entrance area 10 forms a weft stretching device known per se.
  • the stretching device has a channel aligned with the weft insertion channel 6 in the reed 2, which is identical to the weft guide channel 11.
  • the lower boundary surface of the guide channel 11 in the entrance area 10 has an air outlet opening 12 and its upper boundary surface has an air inlet opening 13.
  • the two openings 12, 13 lie opposite one another.
  • openings form the outlet or inlet of air guide channels 14 and 15, the inlet and outlet 14a and 15a of which are provided with an air supply and discharge line 16 and 17, respectively, in such a way that the thread guide channel 11 is preferably transverse an auxiliary flow in the direction of arrow B can be generated to the weft direction A.
  • the head part of the weft thread 7 is directed from the weft direction A into the air duct 15, whereby the weft thread 7 is stretched and kept taut while maintaining the auxiliary flow.
  • a second thread duct 18 which lies in a second arrangement plane, which preferably runs parallel to the arrangement plane of a first thread duct 11.
  • a second weft monitor 19 or 20 is arranged at the end region of the relevant thread guide channel 11, 18 with respect to the aforementioned first weft monitor 8.
  • the second weft monitors 19 and 20 are translationally adjustable in their respective arrangement level. The longitudinal stretching behavior of the weft threads 7 can thus be taken into account when there is no machine shutdown due to this longitudinal stretching behavior.
  • the translational adjustability of the weft monitor 19 or 20 can be realized in different ways. For example, about corresponding Recesses 24, 25 in the base body 9 by connecting elements 26 Weft monitor 19, 20, the relevant support 21 and the corresponding Intermediate pieces 22, 23 (see also FIG. 3) with the frame-like base body 9 get connected.
  • At least the thread guide channel 18 can be designed as a telescopic tube, while the thread guide channel 11 is designed in the manner of the reed channel and is an integral part of the base body 9. Is the thread guide channel 11 in the manner of the reed channel 6, it is necessary when changing the position of the second weft monitor 19 between the constant length "l" of the thread guide channel 11 (see also Fig. 3) at least one corresponding intermediate piece 22 or 23 to provide none To receive impairments of the thread flight within the device 1.
  • the free end of the thread guide channel 18 is in one Recording 21a connected to the support 21.
  • the support 21 is in the Exemplary embodiment by connecting elements 26 via the receptacles 24, 25 in the base body 9 connected to it.
  • the recesses 24, 25 are over the Length of the translational adjustment path of the thread monitors 19, 20 arranged.
  • Fig. 2 shows in the gem.
  • the reference signals 19a and 20a indicate the electrical signal lines to the thread monitors 19, 20.
  • the device 1 is designed as a detection device for the weft thread 7, that is to say without a drawing device.
  • the weft thread monitor 19 In order to do justice to the longitudinal stretching behavior of certain weft threads that do not pass a weft thread stretching device with regard to the correct positioning of the weft thread monitor, provision is made for the weft thread monitor 19 to be positioned on the base body 9 over the length “l” of the thread guide channel 11.
  • at least one intermediate piece 22 or 23 with a thread guide channel 22a or 23a is provided between the free end of the thread guide channel 11 and the entrance 19b of the thread monitor 19 .
  • the thread guide channel 22a or 23a is designed identically to the thread guide channel 11.

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

Description

Die Erfindung betrifft eine Schußfadenstreck- und Detektiereinrichtung für Düsenwebmaschinen, die einem im Bereich der Schußfadenankunftsseite eines Webblattes integrierten ersten Schußfadenwächter nachordenbar ist.The invention relates to a weft stretching and detection device for Jet looms, one in the area of the weft arrival side of a Webblattes integrated first weft guard can be subordinated.

Aus der DE-PS 32 00 637 C2 ist bereits eine derartige Schußfadenspann- und Detektiereinrichtung für Düsenwebmaschinen bekannt. Diese Einrichtung ist ebenfalls einem ersten Schußfadenwächter, der im Bereich der Schußfadenankunftsseite des Webblattes im Webblatt integriert ist, nachgeordnet.From DE-PS 32 00 637 C2 is such a weft tension and Detection device for jet looms known. This facility is also a first weft guard, which in the area of Weft arrival side of the reed is integrated in the reed, subordinate.

Die bekannte Spannvorrichtung zum Strecken und Gespannthalten des eingetragenen Schußfadens ist mit einem quer zur Schußrichtung wirkenden Element versehen, das den aus dem Webfach ragenden Kopfteil des eingetragenen Schußfadens gegenüber der Schußrichtung mittels eines Hilfluftstromes ablenkt.
Ein zweiter Schußfadenwächter ist in einem der Spannvorrichtung übergeordneten Fadenführungsteil integriert.
Dieser Fadenwächter gibt ein Signal an die Webmaschinensteuerung ab, wenn der eingetragene Schußfaden seine Sollänge um einen vorgegebenen Betrag überschreitet, wie dies bei einem Schußplatzer zum Beispiel der Fall ist.
Um jedoch zu verhindern, daß beim Überschreiten der Sollänge des Schußfadens der zweite Schußfadenwächter ein Fehlsignal erzeugt, obwohl kein Schußplatzer vorliegt, sondern das Überschreiten der Sollänge lediglich auf einen Dehnvorgang des Schußfadens während des Eintragvorganges zurückführbar ist, kann der Abstand zwischen dem zweiten Schußfadenwächter und der Spannvorrichtung so groß gewählt werden, daß auch ein solcher kurzzeitig gedehnter Schußfaden den zweiten Schußfadenwächter nicht erreicht.The known tensioning device for stretching and holding the inserted weft thread is provided with an element acting transversely to the weft direction, which deflects the head part of the inserted weft thread protruding from the shed with respect to the weft direction by means of an auxiliary air flow.
A second weft monitor is integrated in a thread guide part above the tensioning device.
This thread monitor sends a signal to the weaving machine control when the weft thread exceeds its desired length by a predetermined amount, as is the case with a weft burst, for example.
However, in order to prevent the second weft guard from generating a false signal when the desired length of the weft is exceeded, although there is no weft burst, but the exceeding of the desired length can only be attributed to a stretching process of the weft thread during the insertion process, the distance between the second weft guard and the Tensioning device should be chosen so large that even such a briefly stretched weft thread does not reach the second weft monitor.

Die bekannte Schußfadenspann- und Detektiereinrichtung ist aber von ihrem Aufbau her nicht geeignet, einen Schußbruch bei Schußfäden zu detektieren, die nicht durch eine Fadenumlenkeinrichtung gestreckt werden sollen, wie dies z.B. bei einem Teil von Schußfäden zu Herstellung bestimmter Gewebe der Fall sein kann.The known weft tensioning and detection device is of hers Construction not suitable to detect a weft break in weft threads that should not be stretched by a thread deflecting device, e.g. at a portion of wefts may be used to manufacture certain fabrics.

Aus dem US-Patent 5,226,458, das als nächstliegender Stand der Technik angesehen wird, ist eine Schußfadenstreck- und Detektiereinrichtung bekannt, die an dem Ausgang eines Webblattes angeordnet ist und wie das Webblatt selbst mit der Weblade einer Webmaschine verbunden ist. Die Einrichtung weist einen Schußfaden-Eingangsbereich auf, der stromabwärts in Schußeintragsrichtung einen in einer ersten Anordnungsebene liegenden Fadenführungskanal besitzt.
Im Eingangsbereich des Schußfadens sind Vorkehrungen zum Strecken des Schußfadens getroffen und zwar in Art zweier einander gegenüberliegender Öffnungen eines ersten und eines zweiten Strömungskanals, wobei der Luftstrom vom ersten Strömungskanal zum zweiten Strömungskanal den in der ersten Anordnungsebene liegenden Fadenführungskanal überbrückt.
Der zweite Strömungskanal geht in eine zweite Anordnungsebene über und bildet hier einen zweiten Fadenführungskanal. Entsprechende Schußfadenwächter, die mit den beiden Fadenführungskanälen in Verbindung stehen, sind nicht dargestellt; für den Fachmann jedoch ist die Anordnung zweiter Schußfadenwächter selbstverständlich.From US Pat. No. 5,226,458, which is considered to be the closest prior art, a weft stretching and detection device is known, which is arranged at the outlet of a reed and how the reed itself is connected to the sley of a weaving machine. The device has a weft thread input area, which has a thread guide channel lying in a first arrangement level downstream in the weft insertion direction.
In the entrance area of the weft, provisions are made for stretching the weft in the manner of two opposing openings of a first and a second flow channel, the air flow from the first flow channel to the second flow channel bridging the thread guide channel located in the first arrangement level.
The second flow channel merges into a second arrangement level and here forms a second thread guide channel. Corresponding weft monitors, which are connected to the two thread guide channels, are not shown; however, the arrangement of second weft monitors is a matter of course for a person skilled in the art.

Aufgabe der Erfindung ist es, eine Einrichtung gemäß oberbegriff des Anspruchs 1 derart auszubilden, daß eine sich aus dem Längsstreckverhalten des Schußfadens während seiner Bewegung durch den Eintragskanal ergebende kurzzeitige Überlänge nicht fälschlicherweise als Schußbruch detektiert wird und einen Webmaschinenstop verursacht.The object of the invention is to provide a device according to the preamble of claim 1 like that train that one from the longitudinal stretching behavior of the weft short-term resulting during its movement through the entry channel Excess length is not erroneously detected as a shot break and a Loom stop caused.

Erfindungsgemäß wird die Aufgabe durch die Merkmale des Ansprüchs 1 gelöst.According to the invention, the object is achieved by the features of claim 1 solved.

Die Erfindung wird nachstehend anhand eines in der Zeichnung dargestellten Ausführungsbespieles näher erläutert. The invention is illustrated below with reference to one in the drawing Execution example explained in more detail.

Es zeigen

Fig. 1:
die Vorderansicht der Schußfadenstreck- und Detektiereinrichtung mit längenveränderlichem Faden-führungskanal in einer ersten und einer zweiten Anordnungsebene in Verbindung mit dem Webblatt der Webmaschine,
Fig. 2:
die Seitenansicht der Einrichtung im Schnitt gemäß der Linie A-A
Fig. 3:
eine Schußfadendetektiereinrichtung mit wahlweise positionierbarem Schußfadenwächter am Ausgang des Fadenführungskanales in der Forderansicht, welche nicht Gegenstand der Erfindung ist.
Fig. 4:
die Seitenansicht der Schußfadendetektiereinrichtung im Schnitt gemäß der Linie B-B.
Show it
Fig. 1:
the front view of the weft stretching and detection device with variable-length thread guide channel in a first and a second arrangement level in connection with the reed of the weaving machine,
Fig. 2:
the side view of the device in section along the line AA
Fig. 3:
a weft detection device with optionally positionable weft monitor at the exit of the thread guide channel in the front view, which is not the subject of the invention.
Fig. 4:
the side view of the weft detection device in section along the line BB.

Die als ein separates Bauteil 1 ausgebildete Schußfadenstreck- und Detektiereinrichtung ist gem. Fig. 1 mit dem schußfadenaustrittseitigen Ende des Webblattes 2 einer Düsenwebmaschine verbunden. Das Webblatt 2 besteht aus einer unteren und einer oberen Rahmenschiene 3, 4, in denen die Enden der Webblattzähne 5 eingefaßt sind. Die Blattzähne 5 bilden eine Ausnehmung 6 aus. Die genannte Ausnehmung 6 aller Blattzähne 5 bildet einen über die Webbreite reichenden, offenen Eintragskanal 6 für den Schußfaden 7 aus.
Das Schußfadeneintragen in den Eintragskanal 6 und damit in das nicht dargestellte Webfach und die dazu eingesetzten Mittel sind bekannt, so daß hierzu nähere Ausführungen nicht erforderlich sind.The weft stretching and detection device designed as a separate component 1 is gem. Fig. 1 connected to the weft exit end of the reed 2 of a jet loom. The reed 2 consists of a lower and an upper frame rail 3, 4, in which the ends of the reed teeth 5 are bordered. The leaf teeth 5 form a recess 6. Said recess 6 of all leaf teeth 5 forms an open entry channel 6 for the weft thread 7 that extends over the weaving width.
The weft thread entry in the entry channel 6 and thus in the shed, not shown, and the means used for this purpose are known, so that further explanations are not required for this.

Am schußfadenaustrittseitigen Endbereich des Webblattes 2 ist in bekannter Weise in Schußrichtung A ein erster Schußfadenwächter 8 integriert. Dieser ist von optoelektronischer Art; seine Formgebung ist derjenigen der Webblattzähne 5 angepaßt. Der erste Schußfadenwächter 8 dient dazu, zu überwachen, ob der eingetragene Schußfaden 7 seine Sollänge erreicht hat und nicht zu kurz ist. Liegt ein sogenannter Kurzschuß vor, der Faden 7 passiert also nicht den ersten Schußfadenwächter 8, dann gibt der Schußfadenwächter 8 ein Signal an die nicht dargestellte Webmaschinensteuerung ab, durch welches die Webmaschine abgestellt wird. At the weft exit end portion of the reed 2 is in a known manner a first weft monitor 8 integrated in the weft direction A. This is of optoelectronic Kind; its shape is adapted to that of the reed teeth 5. The first weft monitor 8 is used to monitor whether the registered Weft 7 has reached its desired length and is not too short. Lies a so-called short shot before, the thread 7 does not pass the first Weft monitor 8, then the weft monitor 8 gives a signal to the shown weaving machine control, by which the weaving machine is switched off becomes.

In Schußrichtung A ist unmittelbar nach dem Webblatt 2 auf der das Webblatt 2 tragenden Weblade (nicht dargestellt) die mit den erfindungsgemäßen Merkmalen ausgebildete Einrichtung als Bauteil 1 angeordnet.In weft direction A, the reed 2 is immediately after the reed 2 supporting sley (not shown) with the features of the invention trained device arranged as component 1.

In dem Grundkörper 9 ist ein Schußfaden-Eingangsbereich 10 - teilweise im Schnitt dargestellt - vorhanden mit einem Schußfadenführungskanal 11, der die Fortsetzung des Schußfadeneintragkanals 6 im Webblatt 2 bildet. Der Eingangsbereich 10 bildet eine an sich bekannte Schußfadenstreckeinrichtung aus.
Die Streckeinrichtung besitzt einen mit dem Schußfadeneintragskanal 6 im Webblatt 2 fluchtenden Kanal, der identisch ist mit dem Schußfadenführungskanal 11. Die untere Begrenzungsfläche des Führungskanales 11 im Eingangsbereich 10 weist eine Luftaustrittsöffnung 12 und dessen obere Begrenzungsfläche eine Lufteintrittsöffnung 13 auf.
Die beiden Öffnungen 12, 13 liegen einander gegenüber. Diese Öffnungen bilden den Ausgang bzw. Eingang von Luftführungskanälen 14 bzw. 15, deren Ein- bzw. Ausgang 14a bzw. 15a mit einer Luftzuführ- bzw. -abführleitung 16 bzw. 17 versehen ist und zwar derart, daß in dem Fadenführungskanal 11 vorzugsweise quer zur Schußrichtung A eine Hilfsströmung in Richtung des Pfeiles B erzeugbar ist. Durch diese Hilfsströmung wird der Kopfteil des Schußfadens 7 aus der Schußrichtung A in den Luftführungskanal 15 gelenkt, wodurch der Schußfaden 7 unter Aufrechterhaltung der Hilfsströmung gestreckt und gespannt gehalten wird.
Am Ausgang 15a des Luftführungskanal 15 schließt sich nach der Luftabführleitung 17 ein zweiter Fadenführungskanal 18 an, der in einer zweiten Anordnungsebene liegt, die vorzugsweise parallel zur Anordnungsebene eines ersten Fadenführungskanales 11 verläuft.
In jeder Anordnungsebene ist am Endbereich des betreffenden Fadenführungskanals 11, 18, in Bezug auf den vorgenannten ersten Schußfadenwächter 8, ein zweiter Schußfadenwächter 19 bzw. 20 angeordnet. Die zweiten Schußfadenwächter 19 bzw. 20 sind in ihrer betreffenden Anordnungsebene translatorisch verstellbar. Damit kann dem Längsstreckverhalten der Schußfäden 7 Rechnung getragen werden, als es aufgrund dieses Längsstreckverhaltens dann zu keiner Maschinenabstellung kommt.In the base body 9 there is a weft input area 10 - shown partly in section - with a weft guide channel 11 which forms the continuation of the weft insertion channel 6 in the reed 2. The entrance area 10 forms a weft stretching device known per se.
The stretching device has a channel aligned with the weft insertion channel 6 in the reed 2, which is identical to the weft guide channel 11. The lower boundary surface of the guide channel 11 in the entrance area 10 has an air outlet opening 12 and its upper boundary surface has an air inlet opening 13.
The two openings 12, 13 lie opposite one another. These openings form the outlet or inlet of air guide channels 14 and 15, the inlet and outlet 14a and 15a of which are provided with an air supply and discharge line 16 and 17, respectively, in such a way that the thread guide channel 11 is preferably transverse an auxiliary flow in the direction of arrow B can be generated to the weft direction A. By means of this auxiliary flow, the head part of the weft thread 7 is directed from the weft direction A into the air duct 15, whereby the weft thread 7 is stretched and kept taut while maintaining the auxiliary flow.
At the outlet 15a of the air duct 15, after the air discharge line 17, there is a second thread duct 18, which lies in a second arrangement plane, which preferably runs parallel to the arrangement plane of a first thread duct 11.
In each arrangement level, a second weft monitor 19 or 20 is arranged at the end region of the relevant thread guide channel 11, 18 with respect to the aforementioned first weft monitor 8. The second weft monitors 19 and 20 are translationally adjustable in their respective arrangement level. The longitudinal stretching behavior of the weft threads 7 can thus be taken into account when there is no machine shutdown due to this longitudinal stretching behavior.

Die translatorische Verstellbarkeit der Schußfadenwächter 19 bzw. 20 kann dabei auf unterschiedlichem Wege realisierbar sein. So können z.B. über entsprechende Ausnehmungen 24, 25 in dem Grundkörper 9 durch Verbindungselemente 26 die Schußfadenwächter 19, 20, die betreffende Stütze 21 und entsprechende Zwischenstücke 22, 23 (siehe auch Fig. 3) mit dem rahmenartigen Grundkörper 9 verbunden werden.The translational adjustability of the weft monitor 19 or 20 can can be realized in different ways. For example, about corresponding Recesses 24, 25 in the base body 9 by connecting elements 26 Weft monitor 19, 20, the relevant support 21 and the corresponding Intermediate pieces 22, 23 (see also FIG. 3) with the frame-like base body 9 get connected.

In einer anderen Ausbildung kann wenigstens der Fadenführungskanal 18 als Teleskoprohr ausgebildet sein, während der Fadenführungskanal 11 in Art des Webblattkanales gestaltet und integraler Bestandteil des Grundkörpers 9 ist.
Ist der Fadenführungskanal 11 in der Art des Webblattkanales 6 ausgebildet, ist es erforderlich bei Positionsänderung des zweiten Schußfadenwächters 19 zwischen der konstanten Länge "l" des Fadenführungskanales 11 (siehe auch Fig. 3) wenigstens ein entsprechendes Zwischenstück 22 bzw. 23 vorzusehen, um keine Beeinträchtigungen des Fadenfluges innerhalb der Einrichtung 1 zu erhalten.In another embodiment, at least the thread guide channel 18 can be designed as a telescopic tube, while the thread guide channel 11 is designed in the manner of the reed channel and is an integral part of the base body 9.
Is the thread guide channel 11 in the manner of the reed channel 6, it is necessary when changing the position of the second weft monitor 19 between the constant length "l" of the thread guide channel 11 (see also Fig. 3) at least one corresponding intermediate piece 22 or 23 to provide none To receive impairments of the thread flight within the device 1.

Wie Fig. 1 weiter zeigt, ist das freie Ende des Fadenführungskanales 18 in einer Aufnahme 21a mit der Stütze 21 verbunden. Die Stütze 21 ist im Ausführungsbeispiel durch Verbindungselemente 26 über die Aufnahmen 24, 25 in dem Grundkörper 9 mit diesem verbunden. Die Ausnehmungen 24, 25 sind über die Länge des translatorischen Verstellweges der Fadenwächter 19, 20 angeordnet.As FIG. 1 further shows, the free end of the thread guide channel 18 is in one Recording 21a connected to the support 21. The support 21 is in the Exemplary embodiment by connecting elements 26 via the receptacles 24, 25 in the base body 9 connected to it. The recesses 24, 25 are over the Length of the translational adjustment path of the thread monitors 19, 20 arranged.

Fig. 2 zeigt in dem gem. der Linie A-A geschnittenen rahmenartigen Grundkörper 9 die Stütze 21 mit Fadenführungskanal 21a.
Mit den Bezugszeichen 19a und 20a sind die elektrischen Signalleitungen zu den Fadenwächtern 19, 20 angedeutet.Fig. 2 shows in the gem. the line AA cut frame-like base body 9, the support 21 with thread guide channel 21a.
The reference signals 19a and 20a indicate the electrical signal lines to the thread monitors 19, 20.

In Fig. 3 ist die Einrichtung 1 als Detektiereinrichtung für den Schußfaden 7, also ohne Streckeinrichtung, ausgebildet.
Um dem Längenstreckverhalten bestimmter Schußfäden, die keine Schußfadenstreckeinrichtung passieren, im Hinblick auf die richtige Positionierung des Schußfadenwächters gerecht zu werden, ist vorgesehen, den Schußfadenwächter 19 über die Länge "l" des Fadenführungskanales 11 hinaus an dem Grundkörper 9 zu positionieren. Damit jedoch der Schußfaden nach dem freien Ende des Fadenführungskanales 11 nicht aus der Schußrichtung A ausgelenkt werden kann, ist zwischen dem freien Ende des Fadenführungskanales 11 und dem Eingang 19b des Fadenwächters 19 wenigstens ein Zwischenstück 22 bzw. 23 mit einem Fadenführungskanal 22a bzw. 23a vorgesehen. Der Fadenführungskanal 22a bzw. 23a ist gestaltungsidentisch zum Fadenführungskanal 11 ausgebildet. In FIG. 3, the device 1 is designed as a detection device for the weft thread 7, that is to say without a drawing device.
In order to do justice to the longitudinal stretching behavior of certain weft threads that do not pass a weft thread stretching device with regard to the correct positioning of the weft thread monitor, provision is made for the weft thread monitor 19 to be positioned on the base body 9 over the length “l” of the thread guide channel 11. However, so that the weft thread cannot be deflected from the weft direction A after the free end of the thread guide channel 11, at least one intermediate piece 22 or 23 with a thread guide channel 22a or 23a is provided between the free end of the thread guide channel 11 and the entrance 19b of the thread monitor 19 . The thread guide channel 22a or 23a is designed identically to the thread guide channel 11.

Die Verbindung des Schußfadenwächters 19 und der Zwischenstücke 22, 23 erfolgt in gleicher Weise, wie bereits in den Figuren 1 und 2 dargestellt.The connection of the weft monitor 19 and the intermediate pieces 22, 23 takes place in the same way as already shown in Figures 1 and 2.

In Fig. 4 ist die Einordnung der Zwischenstücke 22, 23 und des Schußfadenwächters 19 in dem Grundkörper 9 und ihre gegenseitige Verbindung durch Verbindungsmittel 26 dargestellt. 4 is the arrangement of the intermediate pieces 22, 23 and Weft monitor 19 in the base body 9 and their mutual connection represented by connecting means 26.

ZEICHNUNGS-LEGENDEDRAWING LEGEND

11
EinrichtungFacility
22nd
WebblattReed
33rd
RahmenschieneFrame rail
44th
RahmenschieneFrame rail
55
BlattzahnLeaf tooth
66
AusnehmungRecess
77
SchußfadenWeft
88th
SchußfadenwächterWeft guard
99
GrundkörperBasic body
1010th
Schußfaden-EingangsbereichWeft entrance area
1111
SchußfadenführungskanalWeft guide channel
1212th
LuftaustrittsöffnungAir outlet opening
1313
LufteintrittsöffnungAir inlet opening
1414
LuftführungskanalAir duct
14a14a
Eingangentrance
1515
LuftführungskanalAir duct
15a15a
Ausgangoutput
1616
LuftzuführleitungAir supply line
1717th
LuftabführleitungAir discharge line
1818th
FadenführungskanalThread guide channel
1919th
SchußfadenwächterWeft guard
19a19a
SignalleitungSignal line
19b19b
Eingangentrance
2020th
SchußfadenwächterWeft guard
20a20a
SignalleitungSignal line
2121
Stützesupport
2222
ZwischenstückSpacer
22a22a
FadenführungskanalThread guide channel
2323
ZwischenstückSpacer
23a23a
FadenführungskanalThread guide channel
2424th
AusnehmungenRecesses
2525th
Ausnehmungen Recesses
2626
VerbindungselementFastener
A Pfeil BA arrow B
SchußrichtungFiring direction

Claims (5)

  1. Weft thread drawing and detecting device for jet looms, comprising a base member (9) having a weft thread entry region (10), wherein the base member (9) has downstream in the weft thread insertion direction (A) a thread guide channel (11) lying in a first plane of arrangement, and the entry region (10) forms a weft thread drawing device known per se with a first and a second flow channel (14, 15), the air flow of which channels crosses the thread guide channel (11) preferably transversely to the weft thread insertion direction (A), and a second thread guide channel (18) lying in a second plane of arrangement is connected to the second flow channel (15), characterised in that each thread guide channel (11, 18), at least on the outlet side, has associated with it a weft stop motion (19, 20 respectively), and the thread guide channels (11, 18), starting from a first length, are adjustable for length and the weft stop motions (19, 20) are arranged in the base member (9) so as to be displaceable with a translatory movement.
  2. A device according to claim 1, characterised in that at least the second thread guide channel (18) is exchangeable for length-adjusted thread guide channels.
  3. A device according to claim 1, characterised in that the length of the first thread guide channel (11) is adjustable by spacers (21), which have a guide channel (21 a) of identical construction with the thread guide channel (11).
  4. A device according to claim 1, characterised in that at least one of the thread guide channels (11, 18) is of telescopic construction.
  5. A device according to claim 1, characterised in that the second thread guide channel (18) is in the form of a telescopic tube, whilst the first thread guide channel (11) is of identical construction with the entry channel or the aperture (6) in the reed (2).
EP95118267A 1994-12-06 1995-11-21 Weft tensioning and detecting device for jet looms Expired - Lifetime EP0716171B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4443371 1994-12-06
DE4443371A DE4443371C1 (en) 1994-12-06 1994-12-06 Weft break detector with weft tensioner on jet loom

Publications (3)

Publication Number Publication Date
EP0716171A2 EP0716171A2 (en) 1996-06-12
EP0716171A3 EP0716171A3 (en) 1996-07-31
EP0716171B1 true EP0716171B1 (en) 2000-02-09

Family

ID=6535038

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95118267A Expired - Lifetime EP0716171B1 (en) 1994-12-06 1995-11-21 Weft tensioning and detecting device for jet looms

Country Status (4)

Country Link
US (1) US5606998A (en)
EP (1) EP0716171B1 (en)
JP (1) JP2758579B2 (en)
DE (2) DE4443371C1 (en)

Cited By (1)

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Publication number Priority date Publication date Assignee Title
CN102094283A (en) * 2009-12-10 2011-06-15 津田驹工业株式会社 Weaving edge forming device of a rubber strengthening textile weaving loom

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BE1009619A6 (en) * 1995-10-02 1997-06-03 Picanol Nv STRETCHER FOR WEAVING MACHINES.
DE19728013A1 (en) 1997-07-01 1999-01-07 Textilma Ag Device for stretching and tensioning a weft thread and weaving machine with such a device
DE19802254C1 (en) * 1998-01-22 1999-08-05 Dornier Gmbh Lindauer Weft stretching and detection device for jet weaving machines, in particular with pneumatic weft insertion
DE19810129B4 (en) * 1998-03-09 2004-08-05 Lindauer Dornier Gmbh Weft stretching and detection device for jet weaving machines
US6076563A (en) * 1998-03-09 2000-06-20 Lindauer Dornier Gesellschaft Mbh Weft stretching and detecting apparatus for a jet weaving loom
DE10115172C1 (en) * 2001-06-08 2002-12-19 Dornier Gmbh Lindauer Process for monitoring weft insertion in air jet weaving machines and device for carrying out the process
EP1508633B1 (en) * 2003-08-15 2008-10-29 Sultex AG Jet loom
US7748414B2 (en) * 2006-12-12 2010-07-06 Itema (Switzerland) Ltd Method and apparatus for the insertion of weft threads
DE202017100553U1 (en) 2017-02-02 2017-02-20 Lindauer Dornier Gesellschaft Mit Beschränkter Haftung Weft stretching and detecting device for jet looms

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CH649325A5 (en) * 1980-11-25 1985-05-15 Rueti Ag Maschf Weft thread monitoring device on a jet weaving machine.
CH649322A5 (en) * 1981-01-13 1985-05-15 Rueti Te Strake Bv Jet weaving machine.
FR2526053A1 (en) * 1982-05-03 1983-11-04 Saurer Diederichs Sa WEFT RECEIVING AND MONITORING DEVICE FOR A WEAVING MACHINE WITHOUT A SHUTTLE WITH PNEUMATIC WEFT INSERTION
DE3273230D1 (en) * 1982-11-08 1986-10-16 Sulzer Ag Weaving machine
US4962794A (en) * 1988-10-28 1990-10-16 Milliken Research Corporation Air jet loom with integral stretch pipe and pick sensor
CH682244A5 (en) * 1990-07-12 1993-08-13 Sulzer Ag Multicolour airjet loom - has logic circuit with weft detector to arrange length of weft on the barrel of the accumulator w.r.t. type of weft
BE1005230A3 (en) * 1991-01-04 1993-06-01 Picanol Nv Device for seeking an impact on wire looms.

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102094283A (en) * 2009-12-10 2011-06-15 津田驹工业株式会社 Weaving edge forming device of a rubber strengthening textile weaving loom
CN102094283B (en) * 2009-12-10 2013-12-25 津田驹工业株式会社 Weaving edge forming device of rubber strengthening textile weaving loom

Also Published As

Publication number Publication date
EP0716171A3 (en) 1996-07-31
DE4443371C1 (en) 1996-01-18
US5606998A (en) 1997-03-04
DE59507778D1 (en) 2000-03-16
EP0716171A2 (en) 1996-06-12
JPH08209499A (en) 1996-08-13
JP2758579B2 (en) 1998-05-28

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