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EP0109472B1 - Warp tensioning device on a weaving loom - Google Patents

Warp tensioning device on a weaving loom Download PDF

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Publication number
EP0109472B1
EP0109472B1 EP82810448A EP82810448A EP0109472B1 EP 0109472 B1 EP0109472 B1 EP 0109472B1 EP 82810448 A EP82810448 A EP 82810448A EP 82810448 A EP82810448 A EP 82810448A EP 0109472 B1 EP0109472 B1 EP 0109472B1
Authority
EP
European Patent Office
Prior art keywords
warp
tensioner element
carrier beam
carrier
tree
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
EP82810448A
Other languages
German (de)
French (fr)
Other versions
EP0109472A1 (en
Inventor
Erwin Pfarrwaller
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.)
Sulzer AG
Original Assignee
Gebrueder Sulzer 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
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=8190083&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0109472(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Gebrueder Sulzer AG filed Critical Gebrueder Sulzer AG
Priority to EP82810448A priority Critical patent/EP0109472B1/en
Priority to DE8282810448T priority patent/DE3273224D1/en
Priority to US06/531,703 priority patent/US4534386A/en
Priority to JP58200698A priority patent/JP2538545B2/en
Publication of EP0109472A1 publication Critical patent/EP0109472A1/en
Application granted granted Critical
Publication of EP0109472B1 publication Critical patent/EP0109472B1/en
Expired legal-status Critical Current

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    • DTEXTILES; PAPER
    • D03WEAVING
    • D03DWOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D49/00Details or constructional features not specially adapted for looms of a particular type
    • D03D49/04Control of the tension in warp or cloth
    • D03D49/12Controlling warp tension by means other than let-off mechanisms

Definitions

  • the invention relates to a device for tensioning a warp on a weaving machine, containing a spring-like rod-like tensioning element and a support tree on which the tensioning element is supported several times and about whose axis the tensioning element is arranged pivotably. It should be a rigid, non-resilient clamping element.
  • Such a device is described in accordance with French Patent Publication No. 2 252 275, the tensioning element being designated by 2 and the support tree by 19.
  • the tensioning element is supported with respect to the supporting beam within the longitudinal extent of the warp beam, insofar as it is wound with warp threads.
  • the support tree in turn is supported at both ends in the machine frame. Due to the supports between the tensioning element and the support tree, the deformation of the tensioning element under the line load of the warp threads stretched over it is less than with a tensioning element which is only held at its ends.
  • the device according to the French script mentioned may be sufficient for relatively low warp tensions and if the demands on a constant warp tension are not too high while the warp beam is being processed.
  • a device for tensioning a warp which in addition to the tensioning element 4 for the warp threads also has a deflection tree 3. Due to the double deflection of the warp threads running from the warp beam over the deflection beam and the tensioning element in the direction of the warp thread monitor 5 of the aforementioned Swiss script, the deflection angles on the individual deflection element are smaller than when only one deflection element is arranged for the warp threads between the warp beam and the warp thread monitor.
  • the deflection boom and tensioning element should have lower resistance moments against deflection than when only one tension element is present for deflecting the warp threads.
  • the known device for tensioning the warp with a tensioning element and deflection boom mounted only at the ends has proven to be disadvantageous when used on weaving machines at higher speeds, since the inherent dynamics of the relatively heavy tensioning element can result in high thread tension peaks during its oscillating movements during weaving operation.
  • the known device is a hindrance for the operating personnel working on the weaving machine since, due to its large dimensions, it makes access to the weaving machine from the warp side more difficult.
  • the support beam is supported together with a deflection beam for the warp threads between the warp beam and the tensioning element in a plurality of common bearing plates arranged within the weaving width.
  • the weaving machine is easier to operate from the warp side, because the cross-sectional dimensions of the deflection boom and support boom can be chosen to be small due to the multiple support in end shields.
  • the axes of the deflection boom and the support boom can therefore be arranged relatively close to one another, as a result of which the entire device little space is required to tension the warp. An operator on the weaving machine can thus more easily reach into the warp threads across the device and e.g. B. Fix warp thread breaks.
  • FIGS. 10 and 11 illustrate two further positions corresponding to FIG. 8
  • FIGS. 12 to 15 are sections corresponding to FIG. 3 through further embodiments.
  • the weaving machine contains two side cheeks 1, 2, which are connected to one another by a main support 3 and an additional support 4.
  • the warp threads 5 forming the warp run from the two-part warp beam 6, 7 via a deflecting beam 8, a tensioning beam 9 through a warp thread monitor 11 into the shafts 12. Through them the shed 13 is formed, into which a weft thread is inserted at 14. At 15 is the leaf stop.
  • the fabric 16 runs over the spreader 17, the take-off roller 18, the deflection roller 19 onto the goods tree 21.
  • Supports 22 at 23 are screwed onto the main support 3 and the additional support 4.
  • 24 arms 25 are screwed onto them, to which a plurality of closed support bearings 26, which are distributed over the weaving width B, are attached.
  • the support bearings 26 are held in the arms 25 by a T-shaped guide 27 and are arranged in a height-adjustable manner by means of an adjusting screw 28.
  • the parts can be secured by a fixing screw 29.
  • a hollow shaft 31 which forms the support tree and has an axis 81, is supported or supported on the circumference 84 with the interposition of a bearing shell 80, on which a plurality of bearing shells 33 distributed over the weaving width B are fastened by means of connecting pieces 32.
  • the spanning tree 9 is rotatable on its circumference 85 about its axis 61 and is pivotally supported or supported according to arrow 82 about axis 81.
  • a clamping device designated as a whole by 35. It contains a fitting 36 connected to the machine frame, in which a worm 37 is mounted. This is in engagement with a worm wheel 38 which is rotatably mounted in the shaped part 36. This contains a slot 39 which can be seen from FIG.
  • Sleeve 42 has a square bore 43 with a conical end 44.
  • Sleeve 42 is on one end of a z. B. from three parts 45, 46, 47 existing torsion bar. This is housed in the hollow shaft 31 (supporting tree) and pressed down under the action of a compression spring 51 in FIG. 5.
  • the parts 45, 46, 47 are rotatably connected to one another by coupling sleeves 52.
  • the sleeves 52 each contain a pin 53, by means of which they are secured against axial displacement.
  • the torsion bar parts 45-47 z. B. made of plastic centering rings 56.
  • the torsion bar 45-47 is mounted in a corresponding sleeve 57 which is fastened with a screw 58 in the support tree 31.
  • the torsion bar can be pretensioned at the upper end in FIG. 5 by means of the worm drive 37, 38.
  • the rectangular head 41 is rotated by the worm wheel 38 in FIG. 7, so that the end of the uppermost torsion bar part 45 is taken along via the sleeve 42 and the entire torsion bar 45-47 is thereby twisted and thereby put under tension.
  • the axis 61 of the tensioning beam 9 is gradually moved into the position 61a with a substantially constant warp tension.
  • a warp let-off control device designated as a whole in FIG.
  • the flag 63 is still outside the light beam of the light barrier 64. If the axis of the spanning tree 9 moves into the position 61a, the flag 63 is pivoted into the position 63a according to FIG. 10, in about half of the light beam from the light barrier 64 is covered.
  • the arrangement is such that the warp beam 6, 7 is now rotated gradually more quickly. This is done by an electric drive motor 66 (FIG. 1), from which the warp beam 6, 7 is driven via a worm 67, a worm wheel 68, a gear 69 and a gear 71 fastened on the warp beam axis.
  • the axis 61 finally moves into the position 61b (FIG. 8) and the flag 63 into the position 63b shown in FIG. 11, that is Light beam of light barrier 64 completely covered.
  • the motor 66 now runs at the highest speed.
  • the sleeve 74 has a finger 71 which can run onto a roller 72 if the pivoting of the axis 61 exceeds position 61b as a result of a malfunction.
  • the machine is then stopped by a switch 73.
  • a fixed stop 73 is fastened on a support bearing 26 of the supporting tree 31, on which a shoulder 74 of a bearing shell 33 of the clamping tree 9 can run. In this way, the end position 61c of the spanning tree axis can be defined.
  • the clamping tree 9 is rotatably mounted in the bearing shells 33, while the deflecting tree 8 is secured against rotation by a screw 75.
  • the warp threads 5 thus slide over the deflecting tree 8, while the tensioning tree 9 can be set in rotation about its own axis 61 by the warp threads.
  • a continuous bearing trough is used which extends over the entire width B and which can have the same cross section as the parts 33 according to FIG. 3 .
  • the connecting piece 32 extends with a cylindrical end 77 into the spanning tree 9.
  • the connector 32 can hit the stop 73 itself. With this type of construction, the tensioning tree cannot follow these during the further movement of the warp threads 5 because it is secured against rotation.
  • the support tree 31 is mounted in open support bearings 26a with open bearing shells 80a interposed. Furthermore, the parts 31, 32, 9 are welded together.
  • a clamping plate 92 which is provided with a curved end 91 and extends over the entire weaving width B, is screwed onto the supporting tree 31 by means of screws 93. With its curved end 91, plate 92 forms the tensioning element.
  • the tensioning element for the warp threads 5 can also have a different cross section, for example it can have an umbrella-like cross section.
  • the spanning tree 9 (Fig. 8) can also consist of one piece with the parts 32, 31.
  • the support tree 31 has an edge-shaped projection 32a which extends over the entire width B, on which a U-shaped bar 9a, which also extends over the entire width B, z. B. made of plastic.
  • the bar 9a forms the tensioning element for the warp threads 5.
  • the tensioning element 9, 92 and / or the support tree 31 are supported or supported by a continuous support bearing or by a number of individual support bearings distributed over the weaving width B.
  • a bearing for these parts which engages on the circumference will be provided.
  • the supporting tree can optionally have a cross-section other than circular, for. B. semicircular cross section.

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

Description

Die Erfindung betrifft eine Einrichtung zum Spannen einer Webkette an einer Webmaschine, enthaltend ein unter Federwirkung stehendes stangenartiges Spannelement und einen Tragbaum, auf dem das Spannelement mehrfach abgestützt ist und um dessen Achse das Spannelement schwenkbar angeordnet ist. Es soll sich um ein starres, in sich nicht federndes Spannelement handeln.The invention relates to a device for tensioning a warp on a weaving machine, containing a spring-like rod-like tensioning element and a support tree on which the tensioning element is supported several times and about whose axis the tensioning element is arranged pivotably. It should be a rigid, non-resilient clamping element.

Gemäss der französischen Patentpublikation Nr. 2 252 275 ist eine derartige Einrichtung beschrieben, wobei das Spannelement mit 2 und der Tragbaum mit 19 bezeichnet sind. Das Spannelement ist innerhalb der Längserstreckung des Kettbaumes, soweit er mit Kettfäden bewickelt ist, gegenüber dem Tragbaum abgestützt. Der Tragbaum seinerseits ist an beiden Enden im Maschinengestell gelagert. Durch die Abstützungen zwischen Spannelement und Tragbaum ist die Deformation des Spannelementes unter der Streckenlast der darüber gespannten Kettfäden geringer als bei einem Spannelement, das nur an seinen Enden gehalten wird.Such a device is described in accordance with French Patent Publication No. 2 252 275, the tensioning element being designated by 2 and the support tree by 19. The tensioning element is supported with respect to the supporting beam within the longitudinal extent of the warp beam, insofar as it is wound with warp threads. The support tree in turn is supported at both ends in the machine frame. Due to the supports between the tensioning element and the support tree, the deformation of the tensioning element under the line load of the warp threads stretched over it is less than with a tensioning element which is only held at its ends.

Die Einrichtung nach der erwähnten französischen Schrift mag bei relativ geringen Kettspannungen und bei nicht zu hohen Anforderungen an eine konstante Kettspannung während des Abarbeitens des Kettbaums genügen.The device according to the French script mentioned may be sufficient for relatively low warp tensions and if the demands on a constant warp tension are not too high while the warp beam is being processed.

In der schweizerischen Patentschrift Nr. 615 709 wird eine Einrichtung zum Spannen einer Webkette dargestellt, die zusätzlich zum Spannelement 4 für die Kettfäden auch einen Umlenkbaum 3 aufweist. Durch das zweimalige Umlenken der vom Kettbaum ablaufenden Kettfäden über den Umlenkbaum und das Spannelement in Richtung auf den Kettfadenwächter 5 der erwähnten schweizerischen Schrift sind die Umlenkwinkel am einzelnen Umlenkelement kleiner als bei der Anordnung nur eines einzigen Umlenkelementes für die Kettfäden zwischen Kettbaum und Kettfadenwächter. Mit geringeren Umlenkwinkeln werden auch die resultierenden Kräfte auf das Umlenkelement kleiner, so dass bei gegebener maximaler Kettfadenspannung Umlenkbaum und Spannelement geringere Wiederstandsmomente gegen Durchbiegung aufweisen dürften als bei Vorhandensein nur eines Spannelementes für die Umlenkung der Kettfäden. Es hat sich aber als notwendig erwiesen, auch bei Schmalen Webmaschinen grosse Querschnittsdimensionen für Spannelement und Umlenkbaum zu wählen, damit die Durchbiegungen dieser Elemente klein bleiben und die Spannungsunterschiede in den Kettfäden über der Webbreite aufgrund der Durchbiegungen sich nicht nachteilig auswirken können. Die bekannte Einrichtung zum Spannen der Webkette mit nur an den Enden gelagertem Spannelement und Umlenkbaum hat sich aber beim Einsatz an Webmaschinen mit höheren Drehzahlen als nachteilig erwiesen, da die Eigendynamik des relativ schweren Spannelementes bei seinen Schwingbewegungen während des Webbetriebes hohe Fadenspannungsspitzen nach sich ziehen kann. Zudem ist die bekannte Einrichtung für das an der Webmaschine arbeitende Betriebspersonal hinderlich, da es aufgrund seiner grossen Ausdehnungen den Zugang zur Webmaschine von der Kettseite her erschwert.In the Swiss patent specification No. 615 709, a device for tensioning a warp is shown, which in addition to the tensioning element 4 for the warp threads also has a deflection tree 3. Due to the double deflection of the warp threads running from the warp beam over the deflection beam and the tensioning element in the direction of the warp thread monitor 5 of the aforementioned Swiss script, the deflection angles on the individual deflection element are smaller than when only one deflection element is arranged for the warp threads between the warp beam and the warp thread monitor. With lower deflection angles, the resulting forces on the deflection element also become smaller, so that, given the maximum warp thread tension, the deflection boom and tensioning element should have lower resistance moments against deflection than when only one tension element is present for deflecting the warp threads. However, it has proven to be necessary to choose large cross-sectional dimensions for the tensioning element and deflecting beam, even in the case of narrow looms, so that the deflections of these elements remain small and the tension differences in the warp threads over the weaving width cannot have a disadvantageous effect due to the deflections. However, the known device for tensioning the warp with a tensioning element and deflection boom mounted only at the ends has proven to be disadvantageous when used on weaving machines at higher speeds, since the inherent dynamics of the relatively heavy tensioning element can result in high thread tension peaks during its oscillating movements during weaving operation. In addition, the known device is a hindrance for the operating personnel working on the weaving machine since, due to its large dimensions, it makes access to the weaving machine from the warp side more difficult.

Es ist Aufgabe der vorliegenden Erfindung, eine Einrichtung zum Spannen einer Webkette an einer Webmaschine zu schaffen, welche die Forderungen nach Weben bei hohen Kettspannungen, nach konstanter Kettfadenspannung während des Abwebens des Kettbaums, nach möglichst geringer Trägheit des Spannelementes bei seinen Schwingbewegungen und nach geringen Abmessungen zur Erleichterung der Zugänglichkeit der Webmaschine von der Kettseite her gleichzeitig erfüllt.It is an object of the present invention to provide a device for tensioning a warp on a weaving machine which meets the demands for weaving at high warp tensions, for constant warp thread tension during weaving of the warp beam, for the lowest possible inertia of the tensioning element in its oscillating movements and for small dimensions to facilitate access to the weaving machine from the warp side at the same time.

Diese Aufgabe wird erfindungsgemäss dadurch gelöst, dass der Tragbaum gemeinsam mit einem Umlenkbaum für die Kettfäden zwischen Kettbaum und Spannelement in mehreren gemeinsamen innerhalb der Webbreite angeordneten Lagerschilden abgestützt ist. Hierdurch wird es möglich, nicht nur ein Spannelement, sondern auch einen Tragbaum und einen Umlenkbaum mit verhältnismässig geringem Querschnittsdimensionen und demzufolge geringen Massen selbst bei relativ grosser Webbreite zu verwenden. Sogar bei geringen Querschnittsdimensionen lassen sich die Durchbiegungen an Umlenkbaum und Spannelement unter dem Zug der Kettfäden während des Betriebes vernachlässigbar klein halten, so dass keine Gewebefehler aufgrund der Durchbiegungen entstehen können. Infolge der geringen Masse der Einheit Spannelement und Tragbaum vermag sie bei hoher Drehzahl der Webmaschine exakter den Längendifferenzen der Webkette aufgrund der Schaftbewegungen und des Blattanschlages zu folgen, so dass die Spannungsschwankungen in den Kettfäden innerhalb des Webzyklus geringer sind als bei bekannten Einrichtungen zum Spannen einer Webkette.This object is achieved according to the invention in that the support beam is supported together with a deflection beam for the warp threads between the warp beam and the tensioning element in a plurality of common bearing plates arranged within the weaving width. This makes it possible to use not only a tensioning element, but also a supporting tree and a deflecting tree with a relatively small cross-sectional dimension and consequently low masses even with a relatively large weaving width. Even with small cross-sectional dimensions, the deflections on the deflection boom and tensioning element under the tension of the warp threads can be kept negligibly small during operation, so that no fabric defects can occur due to the deflections. As a result of the low mass of the tensioning element and support beam unit, it is able to follow the length differences of the warp more precisely due to the shaft movements and the leaf stop at high speed of the weaving machine, so that the tension fluctuations in the warp threads within the weaving cycle are less than in known devices for tensioning a warp .

Die Abnahme des Kettbaumdurchmessers mit fortschreitendem Abweben des Kettbaumes kann sich wie in der bekannten französischen Patentschrift nicht nachteilig auswirken, da die Lage der Kettfäden relativ zum Spannelement sich während des Abwebens des Kettbaumes nicht verändert und somit auch die resultierende Kraft von den Kettfäden am Spannelement konstant bleibt.The decrease in the warp beam diameter with progressive weaving of the warp beam cannot have a disadvantageous effect, as in the known French patent specification, since the position of the warp threads relative to the tensioning element does not change during the weaving of the warp beam and thus the resulting force from the warp threads on the tensioning element remains constant .

Ferner wird die Webmaschine von der Kettseite her leichter bedienbar, weil die Querschnittsabmessungen von Umlenkbaum und Tragbaum infolge der mehrfachen Abstützung in Lagerschilden klein gewählt werden können. Die Achsen von Umlenkbaum und Tragbaum können deshalb verhältnismässig nahe zueinander angeordnet werden, wodurch die ganze Einrichtung zum Spannen der Webkette wenig Bauraum beansprucht. Eine Bedienungsperson an der Webmaschine kann so leichter über die Einrichtung hinweg in die Kettfäden greifen und z. B. Kettfadenbrüche beheben.Furthermore, the weaving machine is easier to operate from the warp side, because the cross-sectional dimensions of the deflection boom and support boom can be chosen to be small due to the multiple support in end shields. The axes of the deflection boom and the support boom can therefore be arranged relatively close to one another, as a result of which the entire device little space is required to tension the warp. An operator on the weaving machine can thus more easily reach into the warp threads across the device and e.g. B. Fix warp thread breaks.

Die Erfindung wird in folgenden anhand von Ausführungsbeispielen gemäss den Figuren 1-15 beschrieben.

  • Figur 1 ist ein Schnitt durch eine Webmaschine, an der die erfindungsgemässe Einrichtung verwirklicht ist,
  • Figur 2 ist eine Draufsicht auf das kettseitige Ende der Maschine,
  • Figur 3 ist ein der Fig. 1 entsprechender Teilschnitt durch die Einrichtung, in grösserem Massstab,
  • Figur 4 ist eine zugehörige Draufsicht,
  • Figur 5 ist ein Schnitt durch ein Detail entsprechend Fig. 2, in grösserem Massstab,
  • Figur 6 ist ein Schnitt nach Linie VINI in Fig. 5,
  • Figur 7 erläutert ein Detail aus Fig. 5,
  • Figur 8 ist ein Schnitt durch ein weiteres Detail nach Fig. 2, in grösserem Massstab,
  • Figur 9 ist eine zugehörige Draufsicht,
The invention is described in the following using exemplary embodiments according to FIGS. 1-15.
  • FIG. 1 is a section through a weaving machine on which the device according to the invention is implemented,
  • Figure 2 is a top view of the warp end of the machine,
  • FIG. 3 is a partial section corresponding to FIG. 1 through the device, on a larger scale,
  • FIG. 4 is an associated top view,
  • FIG. 5 is a section through a detail corresponding to FIG. 2, on a larger scale,
  • FIG. 6 is a section along line VINI in FIG. 5,
  • FIG. 7 explains a detail from FIG. 5,
  • FIG. 8 is a section through a further detail according to FIG. 2, on a larger scale,
  • FIG. 9 is an associated top view,

Figuren 10 und 11 veranschaulichen zwei weitere Positionen entsprechend Fig. 8FIGS. 10 and 11 illustrate two further positions corresponding to FIG. 8

Figuren 12 bis 15 sind der Fig. 3 entsprechende Schnitte durch weitere Ausführungsformen.FIGS. 12 to 15 are sections corresponding to FIG. 3 through further embodiments.

Die Webmaschine enthält zwei Seitenwangen 1, 2, die durch einen Hauptträger 3 und einen Zusatzträger 4 miteinander verbunden sind. Die die Webkette bildenden Kettfäden 5 laufen von dem zweiteiligen Kettbaum 6, 7 über einen Umlenkbaum 8, einen Spannbaum 9 durch einen Kettfadenwächter 11 in die Schäfte 12. Durch sie wird das Webfach 13 gebildet, in welches bei 14 jeweils ein Schussfaden eingetragen wird. Bei 15 ist der Blattanschlag. Das Gewebe 16 läuft über den Breithalter 17, die Warenabzugsrolle 18, die Umlenkrolle 19 auf den Warenbaum 21.The weaving machine contains two side cheeks 1, 2, which are connected to one another by a main support 3 and an additional support 4. The warp threads 5 forming the warp run from the two-part warp beam 6, 7 via a deflecting beam 8, a tensioning beam 9 through a warp thread monitor 11 into the shafts 12. Through them the shed 13 is formed, into which a weft thread is inserted at 14. At 15 is the leaf stop. The fabric 16 runs over the spreader 17, the take-off roller 18, the deflection roller 19 onto the goods tree 21.

Auf dem Hauptträger 3 und dem Zusatzträger 4 sind Supporte 22 bei 23 aufgeschraubt. Auf sie sind bei 24 Arme 25 aufgeschraubt, an denen mehrere, über die Webbreite B verteilt angeordnete, geschlossene Stützlager 26 angebracht sind. Die Stützlager 26 sind durch eine T-förmige Führung 27 in den Armen 25 gehalten und darin durch eine Verstellschraube 28 höheneinstellbar angeordnet. Durch eine Fixierschraube 29 lassen sich die Teile sichern.Supports 22 at 23 are screwed onto the main support 3 and the additional support 4. 24 arms 25 are screwed onto them, to which a plurality of closed support bearings 26, which are distributed over the weaving width B, are attached. The support bearings 26 are held in the arms 25 by a T-shaped guide 27 and are arranged in a height-adjustable manner by means of an adjusting screw 28. The parts can be secured by a fixing screw 29.

In den Stützlagern 26 ist eine den Tragbaum bildende, eine Achse 81 aufweisende Hohlwelle 31 am Umfang 84 unter Zwischenlage einer Lagerschale 80 gelagert bzw. abgestützt, auf der mittels Verbindungsstücken 32 mehrere, über die Webbreite B verteilt angeordnete Lagerschalen 33 befestigt sind. In ihnen ist der Spannbaum 9 am Umfang 85 um seine Achse 61 drehbar und entsprechend Pfeil 82 um Achse 81 schwenkbar gelagert bzw. abgestützt.In the support bearings 26, a hollow shaft 31, which forms the support tree and has an axis 81, is supported or supported on the circumference 84 with the interposition of a bearing shell 80, on which a plurality of bearing shells 33 distributed over the weaving width B are fastened by means of connecting pieces 32. In them, the spanning tree 9 is rotatable on its circumference 85 about its axis 61 and is pivotally supported or supported according to arrow 82 about axis 81.

An dem in Fig. 2 linken Ende des Tragbaumes 31 ist eine als Ganzes mit 35 bezeichnete Spannvorrichtung angeordnet. Sie enthält ein mit dem Maschinengestell verbundenes Formstück 36, in dem eine Schnecke 37 gelagert ist. Diese steht in Eingriff mit einem in dem Formstück 36 drehbar gelagerten Schneckenrad 38. Diese enthält einen aus Fig. 7 ersichtlichen Schlitz 39, in welchem ein rechteckige Gestaltung aufweisender Ansatz 41 einer Muffe 42 geführt ist. Muffe 42 besitzt eine Vierkantbohrung 43 mit einem konischen Ende 44. Muffe 42 ist auf das eine Ende eines z. B. aus drei Teilen 45, 46, 47 bestehenden Torsionsfederstabes aufgesteckt. Dieser ist in der Hohlwelle 31 (Tragbaum) untergebracht und unter der Wirkung einer Druckfeder 51 in Fig. 5 abwärts gedrückt. Die Teile 45, 46, 47 sind durch Kupplungsmuffen 52 drehfest miteinander verbunden. Die Muffen 52 enthalten je einen Stift 53, durch den sie gegen axiale Verschiebung gesichert sind. In gewissen Abständen tragen die Torsionsstabteile 45-47 z. B. aus Kunststoff bestehende Zentrierringe 56. An dem in Fig. 5 unteren Ende ist der Torsionsstab 45-47 in einer entsprechenden Muffe 57 gelagert, die mit einer Schraube 58 im Tragbaum 31 befestigt ist.At the left end of the support tree 31 in FIG. 2 there is a clamping device designated as a whole by 35. It contains a fitting 36 connected to the machine frame, in which a worm 37 is mounted. This is in engagement with a worm wheel 38 which is rotatably mounted in the shaped part 36. This contains a slot 39 which can be seen from FIG. Sleeve 42 has a square bore 43 with a conical end 44. Sleeve 42 is on one end of a z. B. from three parts 45, 46, 47 existing torsion bar. This is housed in the hollow shaft 31 (supporting tree) and pressed down under the action of a compression spring 51 in FIG. 5. The parts 45, 46, 47 are rotatably connected to one another by coupling sleeves 52. The sleeves 52 each contain a pin 53, by means of which they are secured against axial displacement. At certain intervals, the torsion bar parts 45-47 z. B. made of plastic centering rings 56. At the lower end in Fig. 5, the torsion bar 45-47 is mounted in a corresponding sleeve 57 which is fastened with a screw 58 in the support tree 31.

Mittels des Schneckentriebes 37, 38 lässt sich der Torsionsstab an dem in Fig. 5 oberen Ende vorspannen. Dabei wird der rechteckige Kopf 41 durch das Schneckenrad 38 in Fig. 7 verdreht, so dass über die Muffe 42 das Ende des obersten Torsionstabteiles 45 mitgenommen und dadurch der ganze Torsionsstab 45-47 verdrillt und dadurch unter Spannung gesetzt wird.The torsion bar can be pretensioned at the upper end in FIG. 5 by means of the worm drive 37, 38. The rectangular head 41 is rotated by the worm wheel 38 in FIG. 7, so that the end of the uppermost torsion bar part 45 is taken along via the sleeve 42 and the entire torsion bar 45-47 is thereby twisted and thereby put under tension.

Auf diese Weise entsteht in dem Tragbaum 31 das Bestreben, sich in Fig. 3 entgegen dem Uhrzeigersinn zu verdrehen. Auf diese Weise wird der Spannbaum 9 gegen die Kettfäden 5 gedrückt, so dass diese unter Spannung gehalten werden.In this way, the support tree 31 tends to rotate counterclockwise in FIG. 3. In this way, the tensioning tree 9 is pressed against the warp threads 5 so that they are kept under tension.

Wenn während des Betriebes der WickeldUrchmesser des Kettbaumes 6, 7 allmählich abnimmt, wird die Achse 61 des Spannbaumes 9 allmählich unter im wesentlichen konstanter Kettspannung in die Position 61a gerückt.If, during operation, the winding diameter of the warp beam 6, 7 gradually decreases, the axis 61 of the tensioning beam 9 is gradually moved into the position 61a with a substantially constant warp tension.

Eine als Ganzes in Fig. 2 mit 62 bezeichnete Kettablass-Steuervorrichtung enthält eine auf dem Tragbaum 31 mittels einer durch eine Stellschraube 78 befestigten Muffe 74 und mittels Schrauben 88 angebrachte Steuerfahne 63, die in den Weg einer Lichtschranke 64 hereinbewegt werden kann. Bei der in Fig. 8 dargestellten Position der Teile befindet sich die Fahne 63 noch ausserhalb des Lichtstrahles der Lichtschranke 64. Rückt die Achse des Spannbaumes 9 in die Position 61a, so wird die Fahne 63 in die Position 63a nach Fig. 10 verschwenkt, in der der Lichtstrahl der Lichtschranke 64 etwa zur Hälfte abgedeckt ist. Die Anordnung ist so getroffen, dass nunmehr der Kettbaum 6, 7 allmählich rascher gedreht wird. Dies geschieht durch einen elektrischen Antriebsmotor 66 (Fig. 1), von dem aus der Kettbaum 6, 7 über eine Schnecke 67, ein Schneckenrad 68, ein Zahnrad 69 und ein auf der Kettbaumachse befestigtes Zahnrad 71 angetrieben wird. Wenn die Achse 61 schliesslich in die Position 61 b (Fig. 8) und die Fahne 63 in die in Fig. 11 dargestellte Position 63b rücken, ist der Lichtstrahl der Lichtschranke 64 vollständig abgedeckt. Der Motor 66 läuft nunmehr auf höchster Drehzahl.A warp let-off control device, designated as a whole in FIG. In the position of the parts shown in FIG. 8, the flag 63 is still outside the light beam of the light barrier 64. If the axis of the spanning tree 9 moves into the position 61a, the flag 63 is pivoted into the position 63a according to FIG. 10, in about half of the light beam from the light barrier 64 is covered. The arrangement is such that the warp beam 6, 7 is now rotated gradually more quickly. This is done by an electric drive motor 66 (FIG. 1), from which the warp beam 6, 7 is driven via a worm 67, a worm wheel 68, a gear 69 and a gear 71 fastened on the warp beam axis. When the axis 61 finally moves into the position 61b (FIG. 8) and the flag 63 into the position 63b shown in FIG. 11, that is Light beam of light barrier 64 completely covered. The motor 66 now runs at the highest speed.

Die Muffe 74 hat einen Finger 71, der auf eine Rolle 72 aufzulaufen vermag, wenn die Verschwenkung der Achse 61 infolge einer Betriebsstörung die Position 61b überschreitet.The sleeve 74 has a finger 71 which can run onto a roller 72 if the pivoting of the axis 61 exceeds position 61b as a result of a malfunction.

Die Maschine wird alsdann über einen Schalter 73 stillgesetzt.The machine is then stopped by a switch 73.

Auf einem Stützlager 26 des Tragbaumes 31 ist ein ortsfester Anschlag 73 befestigt, auf welchen ein Ansatz 74 einer Lagerschale 33 des Spannbaumes 9 aufzulaufen vermag. Hierdurch lässt sich die Endposition 61c der Spannbaumachse definieren.A fixed stop 73 is fastened on a support bearing 26 of the supporting tree 31, on which a shoulder 74 of a bearing shell 33 of the clamping tree 9 can run. In this way, the end position 61c of the spanning tree axis can be defined.

Wie aus Fig. 3 ersichtlich, ist der Spannbaum 9 in den Lagerschalen 33 drehbar gelagert, während der Umlenkbaum 8 durch eine Schraube 75 gegen Drehung gesichert ist. Die Kettfäden 5 rutschen also über den Umlenkbaum 8 hinweg, während der Spannbaum 9 von den Kettfäden in Drehung um seine eigene Achse 61 versetzt werden kann.As can be seen from FIG. 3, the clamping tree 9 is rotatably mounted in the bearing shells 33, while the deflecting tree 8 is secured against rotation by a screw 75. The warp threads 5 thus slide over the deflecting tree 8, while the tensioning tree 9 can be set in rotation about its own axis 61 by the warp threads.

Bei einem gegenüber Fig. 2, 3 abgewandelten Ausführungsbeispiel ist statt der über die ganze Webbreite B verteilt angeordneten Stützlager 33 eine sich über die ganze Breite B erstreckende, durchgehende Lagermulde benutzt, die den gleichen Querschnitt aufweisen kann, wie die Teile 33 gemäss Fig. 3.In an exemplary embodiment modified from FIGS. 2, 3, instead of the support bearings 33 which are arranged distributed over the entire weaving width B, a continuous bearing trough is used which extends over the entire width B and which can have the same cross section as the parts 33 according to FIG. 3 .

Bei der Bauart nach Fig. 12 erstreckt sich das Verbindungstück 32 mit einem zylindrischen Ende 77 bis in den Spannbaum 9 hinein. Bei diesem Beispiel kann das Verbindungsstück 32 selbst auf den Anschlag 73 aufschlagen. Bei dieser Bauart kann der Spannbaum während der Weiterbewegung der Kettfäden 5 diesen nicht folgen, weil er gegen Drehung gesichert ist.12, the connecting piece 32 extends with a cylindrical end 77 into the spanning tree 9. In this example, the connector 32 can hit the stop 73 itself. With this type of construction, the tensioning tree cannot follow these during the further movement of the warp threads 5 because it is secured against rotation.

Bei der Bauart nach Fig. 13 ist der Tragbaum 31 in offenen Stützlagern 26a unter Zwischenlage offener Lagerschalen 80a gelagert. Ferner sind die Teile 31, 32, 9 miteinander verschweisst.13, the support tree 31 is mounted in open support bearings 26a with open bearing shells 80a interposed. Furthermore, the parts 31, 32, 9 are welded together.

Bei der Ausführungsform nach Fig. 14 ist eine mit gekrümmtem Ende 91 versehene, sich über die ganze Webbreite B erstreckende Spannplatte 92 mittels Schrauben 93 auf dem Tragbaum 31 aufgeschraubt. Platte 92 bildet mit ihrem gekrümmten Ende 91 das Spannelement.In the embodiment according to FIG. 14, a clamping plate 92, which is provided with a curved end 91 and extends over the entire weaving width B, is screwed onto the supporting tree 31 by means of screws 93. With its curved end 91, plate 92 forms the tensioning element.

Das Spannelement für die Kettfäden 5 kann auch einen noch anderen Querschnitt aufweisen, es kann beispielsweise schirmartigen Querschnitt haben. Der Spannbaum 9 (Fig. 8) kann auch aus einem Stück mit den Teilen 32, 31 bestehen.The tensioning element for the warp threads 5 can also have a different cross section, for example it can have an umbrella-like cross section. The spanning tree 9 (Fig. 8) can also consist of one piece with the parts 32, 31.

Bei dem Ausführungsbeispiel nach Fig. 15 besitzt der Tragbaum 31 einen sich über die ganze Webbreite B erstreckenden, kantenförmigen Ansatz 32a, auf dem eine sich ebenfalls über die ganze Breite B erstreckende, U-förmige Leiste 9a z. B. aus Kunststoff aufgesteckt ist. Die Leiste 9a bildet das Spannelement für die Kettfäden 5.In the embodiment according to FIG. 15, the support tree 31 has an edge-shaped projection 32a which extends over the entire width B, on which a U-shaped bar 9a, which also extends over the entire width B, z. B. made of plastic. The bar 9a forms the tensioning element for the warp threads 5.

Es ist auch eine Ausführungsform möglich, bei der der Tragbaum 31 in einer sich über die ganze Webbreite B erstreckenden, durchgehenden Lagermulde gelagert ist.An embodiment is also possible in which the support tree 31 is supported in a continuous storage trough extending over the entire weaving width B.

Bei allen Ausführungsbeispielen sind das Spannelement 9,92 und/oder der Tragbaum 31 durch ein durchgehendes Stützlager oder durch eine Anzahl einzelner, auf die Webbreite B verteilter Stützlager gelagert bzw. abgestützt. In der Regel wird bei kreisförmigem Querschnitt von Spannelement und Tragbaum eine auf dem Umfang angreifende Lagerung für diese Teile vorgesehen sein. Auch der Tragbaum kann jedoch gegebenenfalls anderen als kreisförmigen Querschnitt haben, z. B. halbkreisförmigen Querschnitt.In all of the exemplary embodiments, the tensioning element 9, 92 and / or the support tree 31 are supported or supported by a continuous support bearing or by a number of individual support bearings distributed over the weaving width B. As a rule, in the case of a circular cross section of the tensioning element and support tree, a bearing for these parts which engages on the circumference will be provided. However, the supporting tree can optionally have a cross-section other than circular, for. B. semicircular cross section.

Claims (8)

1. A device for tensioning a warp (5) in a weaving machine, the device comprising a spring- biased rod-like tensioner element (9, 92, 9a) and a carrier beam (31) on which the tensioner element is borne at more than one place and around whose axis (81) the tensioner element can pivot, characterised in that the carrier beam (31), together with a warp-deflecting beam (8) disposed between the warp beam (6, 7) and the tensioner element (9, 92, 9a), is borne in a number of common bearing mountings (26) disposed within cloth width (B).
2. A device according to Claim 1, characterised in that the tensioner element (9) bears on the carrier beam (31) by way of at least one trough- shaped bearing (33) which extends in the direction of the carrier-beam axis (81).
3. A device according to Claim 1, characterised in that the tensioner element (9) is mounted for rotation relatively to the carrier beam (31) around the axis thereof.
4. A device according to Claim 1, characterised in that the carrier beam (31) is a rotatable hollow shaft receiving a torsion spring bar which comprises a number of component parts (45-47) and which is adapted to bias the warp (5), the component parts (45-47) being so interconnected by at least one coupling (52) as to corotate with one another.
5. A device according to Claim 1, characterised in that the tensioner element (9), carrier beam (31) and at least one web (92, 32) interconnecting them are a unitary member.
6. A device according to Claim 1, characterised in that the carrier beam (31) has a projection (32a) which extends over cloth width (B) and on which a strip (9a) is disposed, the same also extending over cloth width and being operative as tensioner element.
7. A device according to Claim 1, characterised in that the bearing mountings (26) are so connected to arms (25) as to be vertically adjustable, the arms (25) being secured to the machine frame (2).
8. A device according to Claim 1, characterised in that the connecting planes between, on the one hand, the axes of the deflecting beam (8) and carrier beam (31) and, on the other hand, of the carrier beam (31) and tensioner element (9, 92, 9a) include an angle which is at least a right angle, the warp yarns (5) being guided outside these connecting planes by way of the deflecting beam (8) and tensioner element (9).
EP82810448A 1982-10-26 1982-10-26 Warp tensioning device on a weaving loom Expired EP0109472B1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP82810448A EP0109472B1 (en) 1982-10-26 1982-10-26 Warp tensioning device on a weaving loom
DE8282810448T DE3273224D1 (en) 1982-10-26 1982-10-26 Warp tensioning device on a weaving loom
US06/531,703 US4534386A (en) 1982-10-26 1983-09-13 Tensioning beam assembly for a weaving machine
JP58200698A JP2538545B2 (en) 1982-10-26 1983-10-26 Loom

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP82810448A EP0109472B1 (en) 1982-10-26 1982-10-26 Warp tensioning device on a weaving loom

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EP0109472A1 EP0109472A1 (en) 1984-05-30
EP0109472B1 true EP0109472B1 (en) 1986-09-10

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EP (1) EP0109472B1 (en)
JP (1) JP2538545B2 (en)
DE (1) DE3273224D1 (en)

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EP0231726A1 (en) * 1986-01-13 1987-08-12 GebràœDer Sulzer Aktiengesellschaft Loom
EP0350447A1 (en) * 1988-07-08 1990-01-10 GebràœDer Sulzer Aktiengesellschaft Warp tension control process and loom with a warp-tensioning device
EP0396501A1 (en) * 1989-05-02 1990-11-07 Sulzer RàœTi Ag Loom with easy-going warp tension device
US5305802A (en) * 1992-03-27 1994-04-26 Gebrueder Sulzer Aktiengesellschaft Drive adjustment device for sectional warp beam let-off motion
DE4427129A1 (en) * 1994-07-30 1996-02-01 Dornier Gmbh Lindauer Tensioning unit for the weaving chain of a weaving machine
EP0707103A2 (en) 1994-07-30 1996-04-17 Lindauer Dornier Gesellschaft M.B.H Warp tensioning device on a loom
US5755268A (en) * 1995-10-13 1998-05-26 Lindauer Dornier Gesellschaft Mbh Loom warp tensioning device with torque moment compensation
US6135162A (en) * 1997-09-13 2000-10-24 Lindauer Dornier Gesellschaft Mbh Method and device for regulating a back rest and/or a drop wire position of a weaving machine

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BE1005707A3 (en) * 1992-02-27 1993-12-21 Picanol Nv DEVICE FOR FIXING A COMPONENT TO A frame in a weaving machine.
WO1997030201A1 (en) * 1996-02-17 1997-08-21 Picanol N.V. Device for tensioning a warp thread sheet in a mechanical loom
DE19605908A1 (en) * 1996-02-17 1997-08-21 Picanol Nv Loom warp tensioner
BE1011184A3 (en) * 1997-05-28 1999-06-01 Picanol Nv Device for determining the chain ​​tension.
ITMI20042211A1 (en) * 2004-11-17 2005-02-17 Promatech Spa SUPPORT FOR ADJUSTABLE WIRE CYLINDER HEIGHT IN A TEXTILE FRAME
CN102560833A (en) * 2010-12-30 2012-07-11 江苏万工科技集团有限公司 Double-back-rest swinging control device
CN103290608B (en) * 2013-06-06 2014-07-09 青岛铠硕纺机有限公司 Disassembly-free type back rest mechanism
DE102017213255B3 (en) * 2017-08-01 2018-07-26 Lindauer Dornier Gesellschaft Mit Beschränkter Haftung Apparatus for withdrawing a web-shaped product from a loom

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CH523994A (en) * 1970-02-19 1972-06-15 Sulzer Ag Device for generating warp tension on a loom
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Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0231726A1 (en) * 1986-01-13 1987-08-12 GebràœDer Sulzer Aktiengesellschaft Loom
EP0350447A1 (en) * 1988-07-08 1990-01-10 GebràœDer Sulzer Aktiengesellschaft Warp tension control process and loom with a warp-tensioning device
US5014756A (en) * 1988-07-08 1991-05-14 Sulzer Brothers Limited Pile warp tension control in a loom
EP0396501A1 (en) * 1989-05-02 1990-11-07 Sulzer RàœTi Ag Loom with easy-going warp tension device
US5090453A (en) * 1989-05-02 1992-02-25 Sulzer Brothers Limited Torsion bar type warp tensioning device for a loom
US5305802A (en) * 1992-03-27 1994-04-26 Gebrueder Sulzer Aktiengesellschaft Drive adjustment device for sectional warp beam let-off motion
DE4427129A1 (en) * 1994-07-30 1996-02-01 Dornier Gmbh Lindauer Tensioning unit for the weaving chain of a weaving machine
EP0707103A2 (en) 1994-07-30 1996-04-17 Lindauer Dornier Gesellschaft M.B.H Warp tensioning device on a loom
US5558132A (en) * 1994-07-30 1996-09-24 Lindauer Dornier Gesellschaft Mbh Adjustable warp tension roll support in a weaving loom
US5562128A (en) * 1994-07-30 1996-10-08 Lindauer Dornier Gesellschaft Mbh Adjustable warp tension roll support in a weaving loom
DE4427129C2 (en) * 1994-07-30 1998-07-30 Dornier Gmbh Lindauer Tensioning unit for the weaving chain of a weaving machine
US5755268A (en) * 1995-10-13 1998-05-26 Lindauer Dornier Gesellschaft Mbh Loom warp tensioning device with torque moment compensation
US6135162A (en) * 1997-09-13 2000-10-24 Lindauer Dornier Gesellschaft Mbh Method and device for regulating a back rest and/or a drop wire position of a weaving machine

Also Published As

Publication number Publication date
EP0109472A1 (en) 1984-05-30
US4534386A (en) 1985-08-13
DE3273224D1 (en) 1986-10-16
JP2538545B2 (en) 1996-09-25
JPS5994650A (en) 1984-05-31

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