EP0020796B1 - Device for supplying the cross warp threads in a weaving machine - Google Patents

Device for supplying the cross warp threads in a weaving machine Download PDF

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Publication number
EP0020796B1
EP0020796B1 EP79101878A EP79101878A EP0020796B1 EP 0020796 B1 EP0020796 B1 EP 0020796B1 EP 79101878 A EP79101878 A EP 79101878A EP 79101878 A EP79101878 A EP 79101878A EP 0020796 B1 EP0020796 B1 EP 0020796B1
Authority
EP
European Patent Office
Prior art keywords
thread
pawl
thread tensioner
tensioner
rocking lever
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
EP79101878A
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German (de)
French (fr)
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EP0020796A1 (en
Inventor
Bernhard Robert Koch
Erich Vogelbacher
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
Application filed by Gebrueder Sulzer AG filed Critical Gebrueder Sulzer AG
Priority to DE7979101878T priority Critical patent/DE2964948D1/en
Priority to AT79101878T priority patent/ATE2688T1/en
Priority to EP79101878A priority patent/EP0020796B1/en
Priority to SU802928856A priority patent/SU984413A3/en
Priority to US06/157,086 priority patent/US4354530A/en
Priority to BR8003597A priority patent/BR8003597A/en
Priority to JP7828380A priority patent/JPS56344A/en
Priority to CS804132A priority patent/CS244108B2/en
Publication of EP0020796A1 publication Critical patent/EP0020796A1/en
Application granted granted Critical
Publication of EP0020796B1 publication Critical patent/EP0020796B1/en
Expired legal-status Critical Current

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    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03C—SHEDDING MECHANISMS; PATTERN CARDS OR CHAINS; PUNCHING OF CARDS; DESIGNING PATTERNS
    • D03C7/00—Leno or similar shedding mechanisms
    • 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
    • D03D47/40—Forming selvedges
    • D03D47/42—Forming selvedges by knitting or interlacing loops of weft
    • D03D47/44—Forming selvedges by knitting or interlacing loops of weft with additional selvedge thread

Definitions

  • the invention relates to a leno thread delivery device for a weaving machine, with at least one pair of thread bobbins and a spring tensioner associated with each thread bobbin, from which the thread let-off as a function of the thread tension via a pawl engaging in a ratchet wheel connected to the bobbin in a rotationally fixed manner is controlled.
  • thread tensioner and pawl consist of one piece. This combined part is pivoted on an axis under the action of a spiral spring.
  • thread tensioner is designed as a resilient arm and the pawl as an associated, separate component. Thread tensioner and pawl can not consist of one piece in this case due to their different functions, but are two separate parts rigidly connected to each other.
  • the tensile stresses from the warp threads are given directly to the pawl via the thread tensioner.
  • the warp thread is therefore subject to a relatively high load because the pawl should only be unlocked when the warp thread is at a higher tension.
  • the warp thread also has to constantly absorb the frictional force that occurs between the pawl and a toothing that switches the bobbin.
  • the invention has for its object to provide a particularly improved in this regard device.
  • the invention consists in that the pawl is attached to a swivel lever, which is in a limited, mutual movement, allowing a gear connection with the thread tensioner, such that the individual movements corresponding to the specialist movement of the thread tensioner are kept essentially away from the pawl and the swivel - Lever - can only be acted upon by the thread tensioner to unlock the ratchet wheel when the vibration range of the thread tensioner is relocated.
  • This makes it possible to keep the numerous fluctuations in the tension of the warp threads caused by the reed stop and changing of the weaving machine away from the pawl of the leno thread delivery device. These fluctuations are only given to the thread tensioner, which follows them in the form of rapid "dance movements". Only when the area of these dance movements is gradually shifted due to increasing warp thread tension is the pawl finally acted upon by the thread tensioner, whereby the delivery device can be switched on and thread can be supplied later.
  • the fabric 13 is wound onto a fabric tree 14. It contains 15 lathe, e.g. Twist or half-twist bindings. These are generated by leno thread delivery devices 16, which are indicated schematically in FIG. 1.
  • Each leno thread delivery device is fastened on a support 17 connected to the weaving machine frame and contains a base plate 18.
  • a drive shaft 21, which rotates continuously during operation, for the leno thread delivery device 16 is accommodated in the stay 17.
  • Each gear wheel 23 is seated on an axis 25 which is rotatably mounted in the base plate 18 and carries a disk 26 at the top.
  • leno thread supply bobbins can be attached to these, only one of which is shown in FIGS. 2 to 5 and designated 29.
  • the discs 26 visible on the right in FIG. 2 are driven via their gear wheels 23 and an intermediate gear wheel 31. This is in engagement with the gear 22.
  • a thread guide tube 33 (FIGS. 3, 5) is coupled for rotation, through which the pair of threads 45, 46 coming from the two associated bobbins 29 in FIGS. 3, 5 are derived downward and, for example, a twine turner pulley fed and then introduced into the weaving machine.
  • each disc 26 in addition to each ratchet wheel 27 or the associated spool 29, an axle 35 is fastened, on which a control lever 37 provided with a thread eyelet 36 and a pivot lever 40 provided with a thread eyelet 38 and a curved slot 39 are rotatable and supported one above the other.
  • the pivot lever 40 has at its rear end a pawl 41 which cooperates with the ratchet wheel 27.
  • the control lever 37 has a bolt 42 which projects into the slot 39 of the associated pivot lever 40.
  • the four disks 26 are continuously rotated from the drive shaft 21 in accordance with the arrows 43 (FIG. 2), so that a respective pair of coils 29 arranged on one and the same disk 26 is rotated around one at the upper end of the Thread guide tube 33 arranged thread eyelet 44 rotates.
  • the leno thread drawn off from the bobbin denoted by 29a in FIG. 4 is shown continuously and with 45, the thread drawn off from bobbin 29 is shown in broken lines and denoted by 46.
  • the bobbins 29 and 29a rotate in FIG. 4 in accordance with the arrows 47, 48.
  • the threads 45, 46 are drawn off in accordance with the arrows 49, 51 and run downward through the eyelet 44 and arrow 52 through the thread guide tube 33 in FIG. 5 off to the loom.
  • the axis 35 continues in FIG. 5 at the top into a threaded bolt 61, on which the steep nut 54 is rotatable and can be locked with a nut 62.
  • the upper end 63 of the spring 55 is anchored in the nut 54.
  • the tension of the spring 55 can thus also be set to a desired level during weaving operation.
  • the leno thread delivery device can e.g. can be used as a full-turn device.
  • a thread disc is to be connected to the thread guide tube 33. It can also be used in conjunction with a half-turn device.
  • the thread guide tube 33 is e.g. to connect a leno cord suspended in the shafts 11 of the weaving machine 1.
  • the drive 21, 23 of disk 26 is omitted in this case, cf. Fig. 7.
  • the device contains e.g. on the base plate 18 only two disks 26 with associated pairs of coils 29, 29a.
  • the spring action of the pivoting movement of the control lever 37 can also be used to ensure that the length differences of the leno threads 45, 46 which occur during the rotation of a downstream twisting disc or during the up and down movement of the shafts 11 are absorbed and the leno threads are always under approximately the same Tension can be kept.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
  • Silicates, Zeolites, And Molecular Sieves (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Steroid Compounds (AREA)
  • Sewing Machines And Sewing (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)

Abstract

The crossing thread supply system for the weaving machine employs a rotatable bobbin carrier and a thread tensioning means for controlling a thread pay-out from a bobbin on the carrier as a function of thread tension. The tensioning means employs a control lever which is pivotable under the influence of the paid-out thread and a pivoting lever which engages via a pawl with a ratchet wheel connected to the bobbin carrier. The control lever serves to pivot the pivoting lever when moved to an innermost position. This disengages the pawl from the ratchet wheel to permit indexing of the ratchet wheel and bobbin carrier.

Description

Die Erfindung betrifft eine Dreherfaden-Liefereinrichtung für eine Webmaschine, mit wenigstens einem Fadenvorrats-Spulenpaar und einem jeder Fadenvorratsspule zugeordneten, unter Federwirkung stehenden Fadenspanner, von dem aus der Fadenablass in Abhängigkeit von der Fadenspannung über eine in ein mit der Spule drehfest verbundenes Klinkenrad eingreifende Klinke gesteuert ist.The invention relates to a leno thread delivery device for a weaving machine, with at least one pair of thread bobbins and a spring tensioner associated with each thread bobbin, from which the thread let-off as a function of the thread tension via a pawl engaging in a ratchet wheel connected to the bobbin in a rotationally fixed manner is controlled.

Bei einer bisherigen Einrichtung dieser Art (CH-PS 426 676) bestehen Fadenspanner und Klinke aus einem Stück miteinander. Dieser kombinierte Teil ist auf einer Achse unter Wirkung einer Spiralfeder schwenkbar gelagert. Dabei ist auch eine Ausführungsform in Erwägung gezogen, bei der der Fadenspanner als federnder Arm und die Klinke als zugehöriger, separater Bauteil ausgebildet ist. Fadenspanner und Klinke können in diesem Fall aufgrund ihrer verschiedenartigen Funktion nicht aus einem Stück miteinander bestehen, sondern sind zwei separate miteinander starr verbunden Teile.In a previous device of this type (CH-PS 426 676) thread tensioner and pawl consist of one piece. This combined part is pivoted on an axis under the action of a spiral spring. An embodiment is also considered in which the thread tensioner is designed as a resilient arm and the pawl as an associated, separate component. Thread tensioner and pawl can not consist of one piece in this case due to their different functions, but are two separate parts rigidly connected to each other.

Bei diesen bekannten Bauarten werden die Zugspannungen aus den Kettfäden über den Fadenspanner direkt auf die Klinke gegeben. Der Kettfaden unterliegt dadurch einer relativ hohen Beanspruchung, weil die Klinke nur bei höherer Spannung des Kettfadens überhaupt entriegelt werden sollte. Auch hat der Kettfaden die zwischen Klinke und einer die Spule schaltenden Verzahnung auftretende Reibungskraft ständig aufzunehmen.In these known designs, the tensile stresses from the warp threads are given directly to the pawl via the thread tensioner. The warp thread is therefore subject to a relatively high load because the pawl should only be unlocked when the warp thread is at a higher tension. The warp thread also has to constantly absorb the frictional force that occurs between the pawl and a toothing that switches the bobbin.

Der Erfindung liegt die Aufgabe zugrunde, eine besonders in dieser Hinsicht verbesserte Einrichtung zu schaffen.The invention has for its object to provide a particularly improved in this regard device.

Die Erfindung besteht darin, dass die Klinke an einem Schwenkhebel angebracht ist, der mit dem Fadenspanner in einer eine beschränkte, gegenseitige Bewegung zulassenden, getrieblichen Verbindung steht, derart, dass die der Fachbewegung entsprechenden Einzelschwingungen des Fadenspanners im wesentlichen von der Klinke ferngehalten und der Schwenk- hebel-erst bei Verlegung des Schwingbereiches des Fadenspanners-von dem Fadenspanner zur Entriegelung des Klinkenrades beaufschlagbar ist. Hierdurch wird es möglich, die zahlreichen, durch Rietanschlag und Fachwechsel der Webmaschine verursachten Schwankungen in der Spannung der Kettfäden von der Klinke der Dreherfaden-Liefereinrichtung fern zu halten. Diese Schwankungen werden lediglich auf den Fadenspanner gegeben, der ihnen in Form rascher "Tanzbewegungen" folgt. Lediglich wenn der Bereich dieser Tanzbewegungen infolge höher werdender Kettfadenspannung allmälich verlagert wird, wird die Klinke schliesslich durch den Fadenspanner beaufschlagt, wodurch die Liefereinrichtung weiter geschaltet und Faden nachgeliefert werden kann.The invention consists in that the pawl is attached to a swivel lever, which is in a limited, mutual movement, allowing a gear connection with the thread tensioner, such that the individual movements corresponding to the specialist movement of the thread tensioner are kept essentially away from the pawl and the swivel - Lever - can only be acted upon by the thread tensioner to unlock the ratchet wheel when the vibration range of the thread tensioner is relocated. This makes it possible to keep the numerous fluctuations in the tension of the warp threads caused by the reed stop and changing of the weaving machine away from the pawl of the leno thread delivery device. These fluctuations are only given to the thread tensioner, which follows them in the form of rapid "dance movements". Only when the area of these dance movements is gradually shifted due to increasing warp thread tension is the pawl finally acted upon by the thread tensioner, whereby the delivery device can be switched on and thread can be supplied later.

Weitere Merkmale ergeben sich aus der folgenden Beschreibung von Ausführungsbeispielen in Verbindung mit den Ansprüchen und der Zeichnung.

  • Fig. 1 ist eine schematische Uebersichtsdarstellung einer Webmaschine, von der Warenseite her gesehen,
  • Fig. 2 ist eine Draufsicht auf eine erfindungsgemäss ausgebildete Dreherfaden-Liefereinrichtung,
  • Fig. 3 ein zugehöriger Schnitt nach Linie 111-111 in Fig. 2,
  • Fig. 4 ist eine Draufsicht auf ein Detail nach Fig. 2, in grösserem Massstab,
  • Fig. 5 ein zugehöriger Schnitt nach Linie V-V in Fig. 4,
  • Fig. 6 eine zugehörige Vorderansicht in Richtung VI in Fig. 4 und
  • Fig. 7 zeigt eine Variante entsprechend Fig. 2.
Further features emerge from the following description of exemplary embodiments in conjunction with the claims and the drawing.
  • 1 is a schematic overview representation of a weaving machine, seen from the goods side,
  • 2 is a plan view of a leno thread delivery device designed according to the invention,
  • 3 is an associated section along line 111-111 in Fig. 2,
  • 4 is a plan view of a detail according to FIG. 2, on a larger scale,
  • 5 is an associated section along line VV in Fig. 4,
  • Fig. 6 is an associated front view in the direction VI in Fig. 4 and
  • FIG. 7 shows a variant corresponding to FIG. 2.

Die Webmaschine 1 nach Fig. 1 enthält zwei Maschinenwagen 2, 3, in denen die über einen Motor 4 angetriebene Hauptwelle 5 gelagert ist. Der Schussfaden 6 wird mittels eines Projektiles 7 von einer ortsfesten Spule 8 abgezogen und in das Webfach eingetragen. Das Projektil wird von einem Schusswerk 9 abgeschossen und in einem Fangwerk 10 aufgefangen. Die Schäfte sind mit 11 das Riet mit 12 bezeichnet. Das Gewebe 13 wird auf einen Warenbaum 14 aufgewickelt. Es enthält an den Rändern 15 Dreher-, z.B. Zwirndreher-oder Halbdreher-Bindungen. Diese werden durch in Fig. 1 schematisch angedeutete Dreherfaden-Liefereinrichtungen 16 erzeugt.1 contains two machine carriages 2, 3, in which the main shaft 5 driven by a motor 4 is mounted. The weft thread 6 is drawn off from a stationary bobbin 8 by means of a projectile 7 and inserted into the shed. The projectile is shot down by a shot 9 and caught in a catch 10. The shafts are denoted by 11, the reed by 12. The fabric 13 is wound onto a fabric tree 14. It contains 15 lathe, e.g. Twist or half-twist bindings. These are generated by leno thread delivery devices 16, which are indicated schematically in FIG. 1.

Jede Dreherfaden-Liefereinrichtung ist auf einer mit dem Webmaschinengestell verbundenen Stütze 17 befestigt und enthält eine Grundplatte 18. In der Stütze 17 ist eine während des Betriebes kontinuierlich rotierende Antriebswelle 21 für die Dreherfaden-Liefereinrichtung 16 untergebracht. Auf ihre sitzt ein Ritzel 22, welches mit zwei Zahnrädern 23 kämmt. Jedes Zahnrad 23 sitzt auf einer drehbar in der Grundplatte 18 gelagerten Achse 25 und trägt oben eine Scheibe 26. Auf jeder Scheibe 26 sind zwei Klinkenräder 27 frei drehbar gelagert, auf denen Spulenträger 28 angebracht sind. Auf diese können während des Webbetriebes Dreherfaden-Vorratsspulen aufgesteckt werden, von denen in Fig. 2 bis 5 jeweils nur eine gezeigt und mit 29 bezeichnet ist.Each leno thread delivery device is fastened on a support 17 connected to the weaving machine frame and contains a base plate 18. A drive shaft 21, which rotates continuously during operation, for the leno thread delivery device 16 is accommodated in the stay 17. On it sits a pinion 22 which meshes with two gear wheels 23. Each gear wheel 23 is seated on an axis 25 which is rotatably mounted in the base plate 18 and carries a disk 26 at the top. During the weaving operation, leno thread supply bobbins can be attached to these, only one of which is shown in FIGS. 2 to 5 and designated 29.

Die in Fig. 2 rechts sichtbaren Scheiben 26 sind über ihre Zahnräder 23 und ein Zwischenzahnrad 31 angetrieben. Dieses steht mit dem Zahnrad 22 in Eingriff.The discs 26 visible on the right in FIG. 2 are driven via their gear wheels 23 and an intermediate gear wheel 31. This is in engagement with the gear 22.

Mit jeder Scheibe 26 ist ein Fadenleitrohr 33 (Fig. 3, 5) auf Drehung gekuppelt, durch welches das von den beiden zugehörigen Spulen 29 kommende Fadenpaar 45, 46 in Fig. 3, 5 nach unten abgeleitet und z.B. einer Zwirndreher-Scheibe zugeführt und darauf in die Webmaschine eingeleitet wird.With each disc 26, a thread guide tube 33 (FIGS. 3, 5) is coupled for rotation, through which the pair of threads 45, 46 coming from the two associated bobbins 29 in FIGS. 3, 5 are derived downward and, for example, a twine turner pulley fed and then introduced into the weaving machine.

Auf jeder Scheibe 26 ist neben jedem Klinkenrad 27 bzw. der zugehörigen Spule 29 eine Achse 35 befestigt, auf der ein mit einer Fadenöse 36 versehener Steuerhebel 37 und ein mit einer Fadenöse 38 und einem gekrümmten Schlitz 39 versehener Schwenkhebel 40 drehbar und übereinander gelagert sind. Der Schwenkhebel 40 besitzt an seinem rückwärtigen Ende eine mit dem Klinkenrad 27 zusammenarbeitende Klinke 41. Ferner besitzt der Steuerhebel 37 einen Bolzen 42, welcher in dem Schlitz 39 des zugehörigen Schwenkhebels 40 ragt.On each disc 26, in addition to each ratchet wheel 27 or the associated spool 29, an axle 35 is fastened, on which a control lever 37 provided with a thread eyelet 36 and a pivot lever 40 provided with a thread eyelet 38 and a curved slot 39 are rotatable and supported one above the other. The pivot lever 40 has at its rear end a pawl 41 which cooperates with the ratchet wheel 27. Furthermore, the control lever 37 has a bolt 42 which projects into the slot 39 of the associated pivot lever 40.

Während des Betriebes werden die vier Scheiben 26 von der Antriebswelle 21 aus kontinuierlich entsprechend den Pfeilen 43 (Fig. 2) in Drehung versetzt, so dass jeweils ein zusammengehörendes, auf ein und derselben Scheibe 26 angeordnetes Paar von Spulen 29 um eine am oberen Ende des Fadenleitrohres 33 angeordnete Fadenöse 44 rotiert. Der von der in Fig. 4 mit 29a bezeichneten Spule abgezogene Dreherfaden ist durchgehend dargestellt und mit 45, der von Spule 29 abgezogene Faden ist gestrichelt dargestellt und mit 46 bezeichnet. Die Spulen 29 und 29a drehen dabei in Fig. 4 entsprechend den Pfeilen 47, 48. Die Fäden 45, 46 werden gemäss den Pfeilen 49, 51 abgezogen und laufen durch Oese 44 und entsprechend Pfeil 52 durch das Fadenleitrohr 33 in Fig. 5 nach unten ab zur Webmaschine.During operation, the four disks 26 are continuously rotated from the drive shaft 21 in accordance with the arrows 43 (FIG. 2), so that a respective pair of coils 29 arranged on one and the same disk 26 is rotated around one at the upper end of the Thread guide tube 33 arranged thread eyelet 44 rotates. The leno thread drawn off from the bobbin denoted by 29a in FIG. 4 is shown continuously and with 45, the thread drawn off from bobbin 29 is shown in broken lines and denoted by 46. The bobbins 29 and 29a rotate in FIG. 4 in accordance with the arrows 47, 48. The threads 45, 46 are drawn off in accordance with the arrows 49, 51 and run downward through the eyelet 44 and arrow 52 through the thread guide tube 33 in FIG. 5 off to the loom.

Wie bei dem in Fig. 4 oberen Hebel 37 angedeutet, steht dieser zunächst vollkommen ausgeschwenkt, so dass sein Bolzen 42 sich an dem äusseren Ende 43 des Schlitzes 39 des Schwenkhebels 40 befindet. Wenn durch den Kettfadenverbrauch bzw. Dreherfadenverbrauch in der Webmaschine der Hebel 37 sukzessive entgegen einer auf der Achse 35 angeordneten und durch eine Schraube 54 einstellbaren Feder 55 weiter eingeschwenkt wird, so verkürzt sich die Fadenschleife 56 und der Bolzen 42 gelangt schliesslich an das andere Ende 57 des Schlitzes 39, vgl. Die Position 37a des in Fig. 4 unteren Steuerhebels.As indicated in the upper lever 37 in FIG. 4, it initially swings out completely, so that its bolt 42 is located on the outer end 43 of the slot 39 of the pivoting lever 40. If, due to the warp thread consumption or leno thread consumption in the weaving machine, the lever 37 is successively pivoted further against a spring 55 arranged on the axis 35 and adjustable by a screw 54, the thread loop 56 is shortened and the bolt 42 finally reaches the other end 57 of the slot 39, cf. The position 37a of the lower control lever in FIG. 4.

Bei weiterem Einschwenken des Steuerhebels 37 wird der Schwenkhebel 40 über den Bolzen 42 vom Steuerhebel 37a mitgenommen. Beide Hebel 37a, 40 werden in Fig. 4 im Uhrzeigersinn weiter um die Achse 35 verschwenkt. Dabei wird die Klinke 41 ausgehoben. Hierdurch wird das Klinkenrad unter der Wirkung der durch die Feder 55 erzeugten, geringen Zugspannung des Fadens 45 um einen Schaltschritt entsprechend Pfeil 47 weiter geschaltet. Durch die dabei abnehmende Zugspannung im Faden 45 wird der Steuerhebel 37a in Fig. 4 entgegen dem Uhrzeigersinn verschwenkt, wodurch auch der Schwenkhebel 40 in gleichem Drehsinn nachzufolgen vermag. Hierdurch wird die Klinke 41 wieder abgesenkt und vor den nächstfolgenden Zahn 57 des Klinkenrades 27 gerückt. Klinkenrad 27 und zugehörige Spule 29a werden wieder gegen Drehung gesichert. Der Vorgang an den Hebeln 37, 40 wiederholt sich.When the control lever 37 is pivoted further in, the pivot lever 40 is carried along by the control lever 37a via the bolt 42. Both levers 37a, 40 are pivoted clockwise about the axis 35 in FIG. 4. The pawl 41 is lifted out. As a result, the ratchet wheel is shifted further by a switching step according to arrow 47 under the action of the low tension of the thread 45 generated by the spring 55. As a result of the decreasing tension in the thread 45, the control lever 37a in FIG. 4 is pivoted counterclockwise, as a result of which the pivot lever 40 can also follow in the same direction. As a result, the pawl 41 is lowered again and moved in front of the next tooth 57 of the ratchet wheel 27. The ratchet wheel 27 and the associated coil 29a are again secured against rotation. The process on the levers 37, 40 is repeated.

Die Achse 35 setzt sich in Fig. 5 oben in einen Gewindebolzen 61 fort, auf der die Steilmutter 54 drehbar und mit einer Mutter 62 feststellbar ist. In der Mutter 54 ist das obere Ende 63 der Feder 55 verankert. Die Spannung der Feder 55 lässt sich damit auch während des Webbetriebes auf ein gewünschtes Mass einstellen.The axis 35 continues in FIG. 5 at the top into a threaded bolt 61, on which the steep nut 54 is rotatable and can be locked with a nut 62. The upper end 63 of the spring 55 is anchored in the nut 54. The tension of the spring 55 can thus also be set to a desired level during weaving operation.

Die Dreherfaden-Liefereinrichtung kann z.B. als Volldreher-(Zwirndreher-)-einrichtung verwendet werden. Hierzu ist dem Fadenleitrohr 33 eine Zwimscheibe nachzuschalten Sie kann aber auch in Verbindung mit einer Halbdrehervorrichtung benutzt werden. Dazu ist dem Fadenleitrohr 33 z.B. eine in den Schäften 11 der Webmaschine 1 aufgehängte Dreherlitze nachzuschalten. Der Antrieb 21, 23 von Scheibe 26 entfällt in diesem Fall, vgl. Fig. 7.The leno thread delivery device can e.g. can be used as a full-turn device. For this purpose, a thread disc is to be connected to the thread guide tube 33. It can also be used in conjunction with a half-turn device. For this purpose, the thread guide tube 33 is e.g. to connect a leno cord suspended in the shafts 11 of the weaving machine 1. The drive 21, 23 of disk 26 is omitted in this case, cf. Fig. 7.

Bei einer abgewandelten Bauart enthält die Einrichtung z.B. auf der Grundplatte 18 lediglich zwei Scheiben 26 mit zugehörigen Spulenpaaren 29,29a.In the case of a modified design, the device contains e.g. on the base plate 18 only two disks 26 with associated pairs of coils 29, 29a.

Bei allen Ausführungsformen liegt jeweils eine durch die Teile 37, 40, 41, 27 durchgeführte Steuerung des Ablasses bzw. Abzuges der Dreherfäden 45, 46 von den Spulen 29 in Abhängigkeit von der Spannung dieser Fäden vor.In all of the embodiments, there is control of the removal or withdrawal of the leno threads 45, 46 from the bobbins 29 by the parts 37, 40, 41, 27 depending on the tension of these threads.

Durch die unter Federwirkung verlaufende Schwenkbewegung des Steuerhebels 37 kann auch dafür gesort werden, dass die während der Drehung einer nachgeschalteten Zwirnscheibe bzw. während der Auf- und Abbewegung der Schäfte 11 entstehenden Längenunterschiede der Dreherfäden 45, 46 aufgenommen werden und die Dreherfäden ständig unter etwa gleicher Zugspannung gehalten werden.The spring action of the pivoting movement of the control lever 37 can also be used to ensure that the length differences of the leno threads 45, 46 which occur during the rotation of a downstream twisting disc or during the up and down movement of the shafts 11 are absorbed and the leno threads are always under approximately the same Tension can be kept.

Claims (7)

1. Crossing thread delivering device for a loom, with at least one thread supply bobbin pair (29, 29a) and a thread tensioner under spring action (55) assigned to each thread supply bobbin, the paying out of thread (arrows 49, 51) being controlled from the thread tensioner as a function of the thread tension via a pawl (41) engaging in a ratchet wheel (27) non- rotationally connected with the bobbin, characterized in that the pawl (41) is provided at a rocking lever (40) which is in a limited drive connection with the thread tensioner (37) permitting relative movement, in such a way that the individual oscillations of the thread tensioner (37) corresponding to the shed movement are substantially kept away from the pawl (41) and the rocking lever (40) can be pressurized-only after displacement of the oscillatory region of the thread tensioner (37)-by the thread tensioner, to release that ratchet wheel (27).
2. Device according to claim 1, characterized in that the rocking lever (40) has a recess (39) into which protrudes a driver (42) disposed at the thread tensioner (37), in such a way that the pawl (41) is released in an extreme position of the thread tensioner (37).
3. Device according to claims 1 and 2, characterized in that the recess (39) extends over an angle region such that the pawl (41) is released in an opposite extreme position of the thread tensioner (37).
4. Device according to one of the preceding claims, characterized in that the rocking lever (40) and thread tensioner (37) each carry a thread eyelet (38, 36), the rocking lever eyelet (38) being positioned so that between the bobbin draw-off point and the thread tensioner eyelet (36) the thread undergoes a bend (at 38) in the sense that through the thread tension the pawl (41) is continuously pushed in the locking direction.
5. Device according to one of the preceding claims, characterized in that the thread tensioner is designed as a control lever (37), which is mounted on the same pivot axis (35) as the rocking lever (40).
6. Device according to one of the preceding claims, characterized in that the recess is formed as a curved slot (39) into which the driver (42) protrudes.
7. Device according to one of the preceding claims, characterized in that the spring (55) for the thread tensioner (37) is adjustable.
EP79101878A 1979-06-11 1979-06-11 Device for supplying the cross warp threads in a weaving machine Expired EP0020796B1 (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
DE7979101878T DE2964948D1 (en) 1979-06-11 1979-06-11 Device for supplying the cross warp threads in a weaving machine
AT79101878T ATE2688T1 (en) 1979-06-11 1979-06-11 LOOKING THREAD FEED DEVICE FOR A LOOPPING MACHINE.
EP79101878A EP0020796B1 (en) 1979-06-11 1979-06-11 Device for supplying the cross warp threads in a weaving machine
SU802928856A SU984413A3 (en) 1979-06-11 1980-06-02 Apparatus for feeding selvage binding thread to loom
US06/157,086 US4354530A (en) 1979-06-11 1980-06-06 Crossing thread supply system for a weaving machine
BR8003597A BR8003597A (en) 1979-06-11 1980-06-10 TWISTED YARN SUPPLIER FOR TEAR
JP7828380A JPS56344A (en) 1979-06-11 1980-06-10 Crossing thread supply apparatus of loom
CS804132A CS244108B2 (en) 1979-06-11 1980-06-11 Leno thread's feed device for weaving machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP79101878A EP0020796B1 (en) 1979-06-11 1979-06-11 Device for supplying the cross warp threads in a weaving machine

Publications (2)

Publication Number Publication Date
EP0020796A1 EP0020796A1 (en) 1981-01-07
EP0020796B1 true EP0020796B1 (en) 1983-03-02

Family

ID=8186138

Family Applications (1)

Application Number Title Priority Date Filing Date
EP79101878A Expired EP0020796B1 (en) 1979-06-11 1979-06-11 Device for supplying the cross warp threads in a weaving machine

Country Status (8)

Country Link
US (1) US4354530A (en)
EP (1) EP0020796B1 (en)
JP (1) JPS56344A (en)
AT (1) ATE2688T1 (en)
BR (1) BR8003597A (en)
CS (1) CS244108B2 (en)
DE (1) DE2964948D1 (en)
SU (1) SU984413A3 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101295048B1 (en) 2011-11-30 2013-08-09 주식회사 라지 A Tension control apparatus for composition fiber of flat type

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9613858D0 (en) 1996-07-02 1996-09-04 Cortecs Ltd Hydrophobic preparations
DE19651610B4 (en) * 1996-12-12 2005-03-10 Dornier Gmbh Lindauer Apparatus for forming a leno selvedge for weaving machines
DE19654962A1 (en) * 1996-12-12 1998-06-18 Dornier Gmbh Lindauer Holding and positioning device for a leno selvedge device in weaving machines

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Publication number Priority date Publication date Assignee Title
US625206A (en) * 1899-05-16 Let-off mechanism for looms
US124632A (en) * 1872-03-12 Improvement in let-off mechanisms for looms
CH227334A (en) * 1941-09-19 1943-06-15 Sulzer Ag Device for forming edges on looms.
US2703587A (en) * 1953-10-19 1955-03-08 Draper Corp Selvage thread feeding means for looms
US2710631A (en) * 1954-08-12 1955-06-14 Draper Corp Selvage thread feeding means for looms
US2918092A (en) * 1957-04-09 1959-12-22 Paabo Max Device for effecting equal tensile stresses in two threads
US3320978A (en) * 1965-04-27 1967-05-23 Kobayashi Yasushi Selvage braiding means for a shuttleless loom
CH426676A (en) * 1965-05-04 1966-12-15 Prince Jidosha Kogyo Kabushiki Device for braiding the selvedge in a loom without a shuttle
JPS4318767Y1 (en) * 1966-06-24 1968-08-03
CS161196B1 (en) * 1973-05-07 1975-06-10
JPS5112538U (en) * 1974-03-16 1976-01-29
US3945406A (en) * 1974-08-26 1976-03-23 Crompton & Knowles Corporation Leno selvedge device and method of forming a leno selvedge
CA1055363A (en) * 1977-03-15 1979-05-29 Neretex Corporation Leno motion device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101295048B1 (en) 2011-11-30 2013-08-09 주식회사 라지 A Tension control apparatus for composition fiber of flat type

Also Published As

Publication number Publication date
JPH0128140B2 (en) 1989-06-01
SU984413A3 (en) 1982-12-23
DE2964948D1 (en) 1983-04-07
EP0020796A1 (en) 1981-01-07
BR8003597A (en) 1981-01-05
ATE2688T1 (en) 1986-03-15
US4354530A (en) 1982-10-19
JPS56344A (en) 1981-01-06
CS244108B2 (en) 1986-07-17
CS413280A2 (en) 1985-08-15

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