EP0139968B1 - Knot-tying device - Google Patents

Knot-tying device Download PDF

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Publication number
EP0139968B1
EP0139968B1 EP84109861A EP84109861A EP0139968B1 EP 0139968 B1 EP0139968 B1 EP 0139968B1 EP 84109861 A EP84109861 A EP 84109861A EP 84109861 A EP84109861 A EP 84109861A EP 0139968 B1 EP0139968 B1 EP 0139968B1
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EP
European Patent Office
Prior art keywords
bill
binding
control
beak
rotary drive
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
EP84109861A
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German (de)
French (fr)
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EP0139968A2 (en
EP0139968A3 (en
Inventor
Karl-Heinz Kohlen
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Hacoba Textilmaschinen GmbH and Co KG
Original Assignee
Hacoba Textilmaschinen GmbH and Co KG
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Publication date
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Publication of EP0139968A2 publication Critical patent/EP0139968A2/en
Publication of EP0139968A3 publication Critical patent/EP0139968A3/en
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Publication of EP0139968B1 publication Critical patent/EP0139968B1/en
Expired legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H69/00—Methods of, or devices for, interconnecting successive lengths of material; Knot-tying devices ;Control of the correct working of the interconnecting device
    • B65H69/04—Methods of, or devices for, interconnecting successive lengths of material; Knot-tying devices ;Control of the correct working of the interconnecting device by knotting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/30—Handled filamentary material
    • B65H2701/31—Textiles threads or artificial strands of filaments

Definitions

  • the invention relates to a device for producing cat head nodes, in particular for creel, with an insertion device for positioning two parallel thread ends on the knotter, which are overlapped by a binding beak with an L-shaped beak hook and are gripped by the beak hook end each time the rotating driven binding beak passes , whose beak hook is provided with a correspondingly L-shaped, movable scissors half, which cooperates at one control end with a link controlling the opening and closing of the binding pin forming a thread clamp, which is adjustable according to the rotational position of the binding beak.
  • Such a device belongs to the general state of the art.
  • Bobbin creels have a large number of bobbins which must be re-equipped after the threads of the bobbins have been unwound.
  • the ends of the unwound threads held in the thread brakes of the bobbin creels are knotted with the beginnings of the threads of the newly attached bobbins.
  • the so-called cat head knot is primarily used as the knot, which is comparatively simple, but is therefore easy to manufacture and which has usually grown only when the threads are warmed, without opening.
  • the knotters used to manufacture it are comparatively simple. They essentially consist of a rotary-powered binding bill, which has the features mentioned at the beginning.
  • a fixed backdrop which acts on the control end of the movable scissor half and thereby opens the binding beak.
  • the opened, rotationally driven binding beak overlaps the parallel thread ends and cuts them off when the control end leaves the backdrop.
  • the thread ends are clamped at the same time.
  • the fixed backdrop causes the binding beak to be opened and closed with every complete revolution.
  • an additional gripper must be provided to keep the thread ends out of the area of the snapping binding beak when the thread ends are not to be gripped.
  • Such a gripper control is complex.
  • the link is arranged as a transverse part between two parallel pivot arms, which are pressed by spring force onto a control cam, which lifts the link at the desired time and thus creates the possibility that the control end of the movable scissor half can come into engagement with the control contour of the link. Since the swivel arms move on a circular path around the swivel axis, the backdrop moves accordingly. As a result, it cant relative to the control end of the movable half of the scissors.
  • the invention has for its object to improve a device with the features mentioned so that it can be constructed more easily and works more reliably.
  • the backdrop is arranged in a control slide that can only be adjusted in one plane. It is essential for the invention that a pivoting movement of the backdrop is avoided.
  • the control slide which is adjustable according to the invention only in one plane, obviously enables a simple degree guidance of the link, so that tilting of the link relative to the binding bill is excluded. As a result, there are no functional uncertainties in the knot caused by tilting of the backdrop.
  • the control slide is a front plate of a housing with a circular bore for the rotary drive of the binding bill, which is vertically displaceable in the sliding guide of the housing.
  • the use of the front plate for the formation of the backdrop is a significant simplification of the knotter, the vertical displacements occurring only in one plane being reliably controlled by the sliding guides of the front plate.
  • the control slide has a cam bolt which interacts with a control cam parallel to the control slide, which is adjusted by the rotary drive.
  • the required adjustment of the control slide corresponding to the rotational position of the binding spigot is carried out by the cam pin and the control cam via a positive connection, which is provided by the Actuating forces of the binding beak precludes the lifting of the two components from one another. The necessary assignment between the beak function and control curve is therefore always guaranteed.
  • control cam is arranged coaxially with a gear wheel of the rotary drive directly behind the control slide and placed on the gear wheel.
  • the rotary drive of the binding bill has an input shaft acted upon by a swivel lever, an axially parallel intermediate shaft driving the control cam relative to the input shaft and an axially parallel binding bill shaft acted upon by the latter.
  • the rotary drive can therefore be made comparatively compact while ensuring the required ratio between the input shaft and the binding bill shaft and only requires simple structural and cost-effective parts with which the manufacturing effort can be kept low.
  • the side walls of the housing for the rotary drive form the inserting device of the knotter with protruding insert plates which have insertion slots on the front.
  • the insertion device can therefore be manufactured as an integral part of the side walls of the housing, which are required anyway, by punching for mass production.
  • the thread knot 15 has a housing body 17, the side walls 17 'of which are a front insertion plate 18 and a rear insertion plate 19 with insertion slots as shown in the drawing as insertion means for the thread ends 16 3 form.
  • a binding beak 20 essentially consists of a beak hook 21, which is essentially L-shaped and overlaps the thread ends 16 inserted into the insertion device.
  • the beak hook 21 is arranged on a binding beak shaft 20 'in a rotationally fixed manner via two pins, which are not designated in any more detail and which allow the beak hook 21 to be adjusted relative to the thread ends 16 located in the insertion device.
  • the binding beak 20 consists of a movable pair of scissors 22 which is L-shaped in accordance with the beak hook 21.
  • the L-shaped beak hook 21 of the binding beak 20 consists, in a manner known per se, of two pieces of sheet metal arranged at a distance from one another, as can be seen for example in FIG. 8. Between the two pieces of sheet metal, the movable scissor half 22 is arranged, which forms a pair of scissors with the beak hook 21, but which at the same time also forms a thread clamp in a conventional manner.
  • the binding beak 20 is rotatably mounted with its binding beak shaft 20 'in bearing bushes 31, 32 of the housing body 17 and secured in position with a locking washer 33.
  • An intermediate shaft 27 is rotatably mounted in bearing bushes 34, 35 and secured in position with a locking washer 36 parallel to the axis of the binding bill shaft 20 'and to an input shaft 29.
  • the input shaft 29 is supported in bearing bushes 37, 38 and carries at its rear end a pivoting lever 30 which sits on the input shaft 29 in a rotationally fixed manner with a pin 39 and, when subjected to a corresponding action by an actuating rod, can rotate the input shaft 29.
  • All the gears form a transmission ratio, which accordingly results in a pivoting angle of the pivoting lever 30 of 60 °, for example a rotation of the binding bill shaft 20 'by approximately 850 °.
  • control end 22 ' At the end of the movable scissor half 22 there is a control end 22 ', namely essentially a web which is arranged perpendicular to the binding bill shaft 20' and which is arranged with its web ends 22 ", 22" 'within a circular link 23' of a control slide 23.
  • the web ends 22 ′′, 22 ′′ ′′ come into engagement with the link 23 ′, depending on the position of the control slide 23 relative to the binding bill 20.
  • the position of the control slide 23 is determined as a function of the rotational position of the binding beak 20.
  • the control slide 23 has a cam pin 24 which interacts with a control cam 28.
  • the control cam 28 is arranged coaxially with the gear 27 "of the rotary drive and sits directly behind the control slide 23 on the gear 27".
  • a rotation of the gearwheel 27 "and thus of the rotary drive causes the control cam 28 to be rotated accordingly.
  • the cam contour 28 ' which projects radially in comparison to the cam contour 28" of the control cam 28, causes the cam pin 24 to be entrained after the intermediate shaft 27 has been rotated accordingly and thus a lifting of the spool 23. This is in Sliding guides 25, 26 of the housing can be moved vertically.
  • the thread ends 16 are first driven into the slot of the insert plate 18 and then into the slot of the insert plate 19 from below.
  • the slots are shaped so that the thread ends 16 inevitably come behind the L-shaped beak hook 21. If the binding beak 20 is now rotated by pivoting the pivoting lever 30, its beak hook 21 engages behind the thread end 16 according to FIG. 4 and, when the binding beak shaft 20 'is turned further, forms a loop as shown in FIG. 5 after a further half turn. Here, too, it engages behind the thread ends 16.
  • the thread loop thus formed is further rotated during the next half turn of the binding beak until the position of the binding beak 20 shown in FIG. 6 is reached.
  • the binding beak 20 overlaps the thread ends 16 with the L-shaped beak hook 21 on one side and with the movable scissor half 22 on the other side of the thread ends 16 according to FIG. 8.
  • the closing contour or the web end 22'"of the control end 22 ' comes into contact with the link 23'. of the control slide 23, so that the binding bill is closed and thereby cuts the thread ends 16, as can be seen from FIG. 8.
  • the thread ends 16 on the spool or thread brake side are tightened, so that the thread loop 16 'is tightened, as shown in FIG. 11.
  • the thread ends 16 are pulled out of the binding beak 20 or the binding beak 20 opens in that the web end 22 ′′ runs into the area of the opening contour of the link 23 ′.
  • the unwinding process can then be continued by the bobbin creel, since a sufficiently firm knot has formed, namely a double cat head knot.
  • the knotting device is then reset by swiveling back the pivoting lever 30 so that the binding beak 20 or the binding beak shaft 20 'return to the starting position shown in FIG. 3 and are ready for a new knotting process.
  • the knot formation takes place during 2 1/4 turns of the binding beak.
  • a double cat head is made.
  • the same device to produce single or more than double cat heads, in which the binding bill feed is changed. It must therefore be ensured that the binding bill shaft 20 'only makes half a turn or 2 1/2 turns before the control slide 23 is raised before the binding bill 20 opens to produce a triple cat head. This is easily possible by choosing the starting position of the pivot lever 30.
  • the control slide 23 is reset during the return of the binding bill by restoring forces of the movable scissor half 22 after the control cam 28 has released the cam pin 24.
  • the advantage of the thread knotter according to the invention is therefore also that it can easily produce single or multiple cat head knots, so that, for example, even threads with at least double cat head knots are knotted and are therefore sufficiently durable.

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  • Binders And Loading Units For Sheaves (AREA)
  • Basic Packing Technique (AREA)
  • Sewing Machines And Sewing (AREA)

Description

Die Erfindung bezieht sich auf eine Vorrichtung zum Herstellen von Katzenkopfknoten, insbesondere für Spulengatter, mit einer Einlegungseinrichtung zum Positionieren zweier parallel liegender Fadenenden am Knoter, die von einem Bindeschnabel mit einem L-förmigen Schnabelhaken übergriffen und vom Schnabelhakenende bei jedem Vorbeilauf des drehangetriebenen Bindeschnabels hintergriffen werden, dessen Schnabelhaken mit einer diesem entsprechend L-förmigen, an ihm beweglichen Scherenhälfte versehen ist, die an einem Steuerende mit einer das Öffnen und Schließen des eine Fadenklemme bildenden Bindeschnabels steuernden Kulisse zusammmenwirkt, die der Drehlage des Bindeschnabels entsprechend verstellbar ist. Eine solche Vorrichtung gehört zum allgemeinen Stand der Technik.The invention relates to a device for producing cat head nodes, in particular for creel, with an insertion device for positioning two parallel thread ends on the knotter, which are overlapped by a binding beak with an L-shaped beak hook and are gripped by the beak hook end each time the rotating driven binding beak passes , whose beak hook is provided with a correspondingly L-shaped, movable scissors half, which cooperates at one control end with a link controlling the opening and closing of the binding pin forming a thread clamp, which is adjustable according to the rotational position of the binding beak. Such a device belongs to the general state of the art.

Spulengatter weisen eine Vielzahl von Spulstellen auf, die nach dem Abwickeln der Fäden der Spulen neu bestückt werden müssen. Dazu werden die in den Fadenbremsen der Spulengatter festgehaltenen Enden der abgespulten Fäden mit den Anfängen der Fäden der neu aufgesteckten Spulen verknotet. Als Knoten wird vornehmlich der sogenannten Katzenkopfknoten eingesetzt, der zwar vergleichsweise einfach ist, sich daher aber leicht herstellen läßt und den beim Schären der Fäden lediglich geringen Fadenzugspannungen üblicherweise gewachsen ist, ohne aufzugehen. Der Einfachheit eines Katzenkopfknotens entsprechend sind die zu ihrer Herstellung verwendeten Knoter vergleichsweise einfach aufgebaut. Sie bestehen im wesentlichen aus einem drehangetriebenen Bindeschnabel, der die eingangs genannten Merkmale aufweist. Zur Steuerung des Bindeschnabels bzw. seiner beweglichen Scherenhälfte ist eine feststehende Kulisse bekannt, die das Steuerende der beweglichen Scherenhälfte beaufschlagt und dadurch den Bindeschnabel öffnet. Der geöffnete drehangetriebene Bindeschnabel übergreift die parallelliegenden Fadenenden und schneidet sie ab, wenn das Steuerende die Kulisse verläßt. Dabei werden die Fadenenden zugleich geklemmt. Die feststehende Kulisse bewirkt, daß der Bindeschnabel bei jeder vollständigen Umdrehung geöffnet und geschlossen wird. Infolgedessen muß ein zusatzlicher Greifer vorhanden sein, um die Fadenenden aus dem Bereich des schnappenden Bindeschnabels herauszuhalten, wenn die Fadenenden nicht ergriffen werden sollen. Eine derartige Greifersteuerung ist jedoch aufwendig.Bobbin creels have a large number of bobbins which must be re-equipped after the threads of the bobbins have been unwound. For this purpose, the ends of the unwound threads held in the thread brakes of the bobbin creels are knotted with the beginnings of the threads of the newly attached bobbins. The so-called cat head knot is primarily used as the knot, which is comparatively simple, but is therefore easy to manufacture and which has usually grown only when the threads are warmed, without opening. In line with the simplicity of a cat's head knot, the knotters used to manufacture it are comparatively simple. They essentially consist of a rotary-powered binding bill, which has the features mentioned at the beginning. To control the binding beak or its movable scissor half, a fixed backdrop is known which acts on the control end of the movable scissor half and thereby opens the binding beak. The opened, rotationally driven binding beak overlaps the parallel thread ends and cuts them off when the control end leaves the backdrop. The thread ends are clamped at the same time. The fixed backdrop causes the binding beak to be opened and closed with every complete revolution. As a result, an additional gripper must be provided to keep the thread ends out of the area of the snapping binding beak when the thread ends are not to be gripped. Such a gripper control is complex.

Es ist daher bereits vorgeschlagen worden, eine verstellbare Kulisse zu verwenden, die so verstellt wird, daß ein öffenen des Bindeschnabels nur dann stattfindet, wenn die Kulisse verstellt ist. Hierzu ist die Kulisse als Querteil zwischen zwei parallelen Schwenkarmen angeordnet, die mit Federkraft auf einen Steuernocken gedrückt werden, der die Kulisse zum gewünschten Zeitpunkt anhebt und damit die Möglichkeit schafft, daß das Steuerende der beweglichen Scherenhälfte in Eingriff mit der Steuerkontur der Kulisse gelangen kann. Da sich die Schwenkarme auf einer Kreisbahn um die Schwenkachse bewegen, bewegt sich die Kulisse entsprechend. Sie verkantet sich infolgedessen relativ zum Steuerende der beweglichen Scherenhälfte. Infolgedessen und wegen der bei diesem Gleitvorgang des Steuerendes in der Kulisse zu berücksichtigenden Toleranzen kann eine befriedigende Steuerung des Bindeschnabels nur erreicht werden, wenn die in Eingriff gelangenden Bereiche entsprechend gerundet und exakt ausgebildet sind. Da der Steuernocken und die Schwenkarme nur kraftschlüssig zusammenwirken, und zwar an einer der Schwenkachse aus baulichen Gründen benachbarten Stelle, können starke Fäden wegen der großen erforderlichen Stellkräfte beim Schneiden von starken Fäden über den Bindeschnabel und die Kulisse auf die Schwenkarme derart einwirken, daß die Schwenkarme abheben und der Bindeschnabel nicht vollständig schließt und dadurch den Faden verliert.It has therefore already been proposed to use an adjustable backdrop which is adjusted so that the binding beak only opens when the backdrop is adjusted. For this purpose, the link is arranged as a transverse part between two parallel pivot arms, which are pressed by spring force onto a control cam, which lifts the link at the desired time and thus creates the possibility that the control end of the movable scissor half can come into engagement with the control contour of the link. Since the swivel arms move on a circular path around the swivel axis, the backdrop moves accordingly. As a result, it cant relative to the control end of the movable half of the scissors. As a result and because of the tolerances to be taken into account during this sliding process of the control end in the link, satisfactory control of the binding beak can only be achieved if the areas that come into engagement are appropriately rounded and exactly formed. Since the control cam and the swivel arms only interact positively, namely at a location adjacent to the swivel axis for structural reasons, strong threads can act on the swivel arms in such a way that the swivel arms due to the large actuating forces required when cutting strong threads over the binding bill and the link lift off and the binding beak does not close completely and thereby looses the thread.

Der Erfindung liegt die Aufgabe zugrunde, eine Vorrichtung mit den eingangs genannten Merkmalen so zu verbessern, das sie einfacher aufgebaut werden kann und zuverlässiger funktioniert.The invention has for its object to improve a device with the features mentioned so that it can be constructed more easily and works more reliably.

Diese Aufgabe wird dadurch gelöst, daß die Kulisse in einem ausschließlich in einer Ebene verstellbaren Steuerschieber angeordnet ist. Für die Erfindung ist wesentlich, daß eine Schwenkbewegung der Kulisse vermieden wird. Der erfindungsgemäß ausschließlich in einer Ebene verstellbare Steuerschieber ermöglicht offensichtlich eine einfach ausgebildete Gradführung der Kulisse, so daß Verkantungen der Kulisse relativ zum Bindeschnabel ausgeschlossen sind. Infolgedessen treten auch keine durch Verkantungen der Kulisse bedingten Funktionsunsicherheiten beim Knoten auf.This object is achieved in that the backdrop is arranged in a control slide that can only be adjusted in one plane. It is essential for the invention that a pivoting movement of the backdrop is avoided. The control slide, which is adjustable according to the invention only in one plane, obviously enables a simple degree guidance of the link, so that tilting of the link relative to the binding bill is excluded. As a result, there are no functional uncertainties in the knot caused by tilting of the backdrop.

Der Steuerschieber ist eine mit einer kreisförmigen Bohrung versehene Frontplatte eines Gehäuses für den Drehantrieb des Bindeschnabels, die in Gleitführung des Gehäuses vertikal verschieblich ist. Der Verwendung der Frontplatte zur Ausbildung der Kulisse ist eine wesentliche Vereinfachung des Knoters, wobei die lediglich in einer Ebene erfolgenden Vertikalverschiebungen durch die Gleitführungen der Frontplatte zuverlässig beherrscht werden können.The control slide is a front plate of a housing with a circular bore for the rotary drive of the binding bill, which is vertically displaceable in the sliding guide of the housing. The use of the front plate for the formation of the backdrop is a significant simplification of the knotter, the vertical displacements occurring only in one plane being reliably controlled by the sliding guides of the front plate.

Der Steuerschieber weist einen Kurvenbolzen auf, der mit einer steuerschieberparallelen Steuerkurve zusammenwirkt, die vom Drehantrieb verstellt wird. Die erforderliche, der Drehlage des Bindeschnabels entsprechende Verstellung des Steuerschiebers erfolgt durch den Kurvenbolzen und die Steuerkurve über eine formschlüssige Verbindung, die ein durch die Stellkräfte des Bindeschnabels bedingtes Abheben der beiden Bauteile voneinander ausschließt. Die erforderliche Zuordnung zwischen Bindeschnabelfunktion und Steuerkurve ist daher stets gewährleistet.The control slide has a cam bolt which interacts with a control cam parallel to the control slide, which is adjusted by the rotary drive. The required adjustment of the control slide corresponding to the rotational position of the binding spigot is carried out by the cam pin and the control cam via a positive connection, which is provided by the Actuating forces of the binding beak precludes the lifting of the two components from one another. The necessary assignment between the beak function and control curve is therefore always guaranteed.

In baulich einfacher Ausgestaltung ist die Steuerkurve gleichachsig mit einem Zahnrad des Drehantriebs unmittelbar hinter dem Steuerschieber angeordnet und auf das Zahnrad aufgesetzt.In a structurally simple configuration, the control cam is arranged coaxially with a gear wheel of the rotary drive directly behind the control slide and placed on the gear wheel.

Der Drehantrieb des Bindeschnabels weist eine von einem Schwenkhebel beaufschlagte Eingangswelle, eine achsparallele, die Steuerkurve gegenüber der Eingangswelle übersetzt antreibende Zwischenwelle und eine von letzterer beaufschlagte, ebenfalls achsparallele Bindeschnabelwelle auf. Der Drehantrieb kann daher unter Gewährleistung der erforderlichen Übersetzung zwischen der Eingangswelle und der Bindeschnabelwelle vergleichsweise kompakt ausgebildet werden und benötigt lediglich baulich und kostenmäßig einfache Teile, mit denen der Berstellungsaufwand gering gehalten werden kann.The rotary drive of the binding bill has an input shaft acted upon by a swivel lever, an axially parallel intermediate shaft driving the control cam relative to the input shaft and an axially parallel binding bill shaft acted upon by the latter. The rotary drive can therefore be made comparatively compact while ensuring the required ratio between the input shaft and the binding bill shaft and only requires simple structural and cost-effective parts with which the manufacturing effort can be kept low.

Die Seitenwände des Gehäuses für den Drehantrieb bilden mit frontseitig vorspringenden, Einlegeschlitze aufweisenden Einlegeblechen die Einlegeeinrichtung des Knoters. Die Einlegeeinrichtung kann daher als integrales Bestandteil der ohnehin erforderlichen Seitenwände des Gehäuses durch massenfertigungsgerechtes Stanzen hergestellt werden.The side walls of the housing for the rotary drive form the inserting device of the knotter with protruding insert plates which have insertion slots on the front. The insertion device can therefore be manufactured as an integral part of the side walls of the housing, which are required anyway, by punching for mass production.

Die Erfindung wird anhand eines in der Zeichnung dagestellten Ausführungsbeispiels erläutert. Es zeigt:

  • Fig. 1, Fig. 3 perspektivische, teilweise ausgebrochene Ansichten der erfindungsgemäßen Vorrichtung,
  • Fig. 2 einen Vertikalschnitt durch die Vorrichtung der Fig. 1,
  • Fig. 4 bis 11 Teildarstellungen der erfindungsgemäßen Vorrichtung bei unterschiedlichen Funktionszuständen.
The invention will be explained with reference to an embodiment shown in the drawing. It shows:
  • 1, FIG. 3 perspective, partially broken-away views of the device according to the invention,
  • 2 shows a vertical section through the device of FIG. 1,
  • 4 to 11 partial representations of the device according to the invention in different functional states.

Fig. 1, 3 zeigen einen Fadenknoter 15 zum Verknoten zweier parallel liegender Fadenenden 16. Der Fadenknoter 15 hat einen Gehäusekörper 17, dessen Seitenwände 17' ein vorderes Einlegeblech 18 und ein hinteres Einlegeblech 19 mit aus der Zeichnung ersichtlichen Einlegeschlitzen als Einlegeeinrichtung für die Fadenenden 16 gemäß Fig. 3 bilden.1, 3 show a thread knot 15 for knotting two parallel thread ends 16. The thread knot 15 has a housing body 17, the side walls 17 'of which are a front insertion plate 18 and a rear insertion plate 19 with insertion slots as shown in the drawing as insertion means for the thread ends 16 3 form.

Ein Bindeschnabel 20 besteht im wesentlichen aus einem Schnabelhaken 21, der im wesentlichen L-förmig ist und die in die Einlegevorrichtung eingelegten Fadenenden 16 übergreift. Der Schnabelhaken 21 ist an einer Bindeschnabelwelle 20' über zwei nicht näher bezeichnete Stifte drehfest angeordnet, die eine Justierung des Schnabelhakens 21 relativ zu den in der Einlegevorrichtung befindlichen Fadenenden 16 gestatten. Des weiteren besteht der Bindeschnabel 20 aus einer beweglichen Scherenhälfte 22, die dem Schnabelhaken 21 entsprechend L-förmig ausgebildet ist. Der L-förmige Schnabelhaken 21 des Bindeschnabels 20 besteht in an sich bekannter Weise aus zwei mit Abstand zueinander angeordneten Blechstücken, wie beispielsweise Fig. 8 erkennen läßt. Zwischen beiden Blechstücken ist die bewegliche Scherenhälfte 22 angeordnet, die mit dem Schnabelhaken 21 eine Schere bildet, die jedoch zugleich in ebenfalls herkömmlicher Weise eine Fadenklemme bildet.A binding beak 20 essentially consists of a beak hook 21, which is essentially L-shaped and overlaps the thread ends 16 inserted into the insertion device. The beak hook 21 is arranged on a binding beak shaft 20 'in a rotationally fixed manner via two pins, which are not designated in any more detail and which allow the beak hook 21 to be adjusted relative to the thread ends 16 located in the insertion device. Furthermore, the binding beak 20 consists of a movable pair of scissors 22 which is L-shaped in accordance with the beak hook 21. The L-shaped beak hook 21 of the binding beak 20 consists, in a manner known per se, of two pieces of sheet metal arranged at a distance from one another, as can be seen for example in FIG. 8. Between the two pieces of sheet metal, the movable scissor half 22 is arranged, which forms a pair of scissors with the beak hook 21, but which at the same time also forms a thread clamp in a conventional manner.

Der Bindeschnabel 20 ist mit seiner Bindeschnabelwelle 20' in Lagerbuchsen 31, 32 des Gehäusekörpers 17 drehbar gelagert und mit einer Sicherungsscheibe 33 lagegesichert. Achsparallel zur Bindeschnabelwelle 20' und zu einer Eingangswelle 29 ist eine Zwischenwelle 27 in Lagerbuchsen 34, 35 drehbar gelagert und mit einer Sicherungsscheibe 36 lagegesichert. Die Eingangswelle 29 lagert in Lagerbuchsen 37, 38 und trägt an ihrem rückwärtigen Ende einen Schwenkhebel 30, der mit einem Stift 39 drehfest auf der Eingangswelle 29 sitzt und bei entsprechender Beaufschlagung über eine Stellstange die Eingangswelle 29 drehen kann. Frontseitig sitzt auf der Eingangswelle 29 ein verzahntes Eingangsrad 29', das mit einem auf der Zwischenwelle 27 angeordneten Ritzel 27' kämmt. Auf der Zwischenwelle 27 ist darüber hinaus ein Zahnrad 27" angeordnet, das seinerseits in Eingriff mit einem Ritzel 20" der Bindeschnabelwelle 20' steht. Infolgedessen wird durch ein Verdrehen des Schwenkhebels 30 z.B. im Uhrzeigersinn auch die Bindeschnabelwelle 20' im Uhrzeigersinn verdreht. Dabei bilden alle Zahnräder eine Übersetzung, dergemäß ein Schwenkwinkel des Schwenkhebels 30 von 60° beispielsweise eine Drehung der Bindeschnabelwelle 20' um ca 850° zur Folge hat.The binding beak 20 is rotatably mounted with its binding beak shaft 20 'in bearing bushes 31, 32 of the housing body 17 and secured in position with a locking washer 33. An intermediate shaft 27 is rotatably mounted in bearing bushes 34, 35 and secured in position with a locking washer 36 parallel to the axis of the binding bill shaft 20 'and to an input shaft 29. The input shaft 29 is supported in bearing bushes 37, 38 and carries at its rear end a pivoting lever 30 which sits on the input shaft 29 in a rotationally fixed manner with a pin 39 and, when subjected to a corresponding action by an actuating rod, can rotate the input shaft 29. A toothed input wheel 29 'sits on the front side of the input shaft 29 and meshes with a pinion 27' arranged on the intermediate shaft 27. On the intermediate shaft 27 there is also a gear 27 ″, which in turn is in engagement with a pinion 20 ″ of the binding bill shaft 20 ′. As a result, by rotating the pivot lever 30 e.g. clockwise the binding bill shaft 20 'is also rotated clockwise. All the gears form a transmission ratio, which accordingly results in a pivoting angle of the pivoting lever 30 of 60 °, for example a rotation of the binding bill shaft 20 'by approximately 850 °.

Am Ende der beweglichen Scherenhälfte 22 befindet sich ein Steuerende 22', nämlich im wesentlichen ein senkrecht zur Bindeschnabelwelle 20' angeordneter Steg, der mit seinem Stegenden 22", 22"' innerhalb einer kreisförmigen Kulisse 23' eines Steuerschiebers 23 angeordnet ist. Die Stegenden 22", 22' ' ' gelangen mit der Kulisse 23' in Eingriff, je nach dem welche Stellung der Steuerschieber 23 relativ zum Bindeschnabel 20 einnimmt.At the end of the movable scissor half 22 there is a control end 22 ', namely essentially a web which is arranged perpendicular to the binding bill shaft 20' and which is arranged with its web ends 22 ", 22" 'within a circular link 23' of a control slide 23. The web ends 22 ″, 22 ″ ″ come into engagement with the link 23 ′, depending on the position of the control slide 23 relative to the binding bill 20.

Die Stellung des Steuerschiebers 23 wird in Abhängigkeit von der Drehlage des Bindeschnabels 20 bestimmt. Hierzu hat der Steuerschieber 23 einen Kurvenbolzen 24, der mit einer Steuerkurve 28 zusammenwirkt. Die Steuerkurve 28 ist gleichachsig mit dem Zahnrad 27" des Drehantriebs angeordnet und sitzt unmittelbar hinter dem Steuerschieber 23 auf dem Zahnrad 27". Eine Verdrehung des Zahnrads 27" und damit des Drehantriebs bewirkt, daß die Steuerkurve 28 entsprechend verdreht wird. Die Kurvenkontur 28', die im Vergleich zur Kurvenkontur 28" der Steuerkurve 28 radial vorspringt, bewirkt nach entsprechender Verdrehung der Zwischenwelle 27 eine Mitnahme des Kurvenbolzens 24 und damit ein Anheben des Steuerschiebers 23. Dieser ist in Schiebeführungen 25, 26 des Gehäuses vertikal verschieblich.The position of the control slide 23 is determined as a function of the rotational position of the binding beak 20. For this purpose, the control slide 23 has a cam pin 24 which interacts with a control cam 28. The control cam 28 is arranged coaxially with the gear 27 "of the rotary drive and sits directly behind the control slide 23 on the gear 27". A rotation of the gearwheel 27 "and thus of the rotary drive causes the control cam 28 to be rotated accordingly. The cam contour 28 ', which projects radially in comparison to the cam contour 28" of the control cam 28, causes the cam pin 24 to be entrained after the intermediate shaft 27 has been rotated accordingly and thus a lifting of the spool 23. This is in Sliding guides 25, 26 of the housing can be moved vertically.

Zum Betrieb des Knoters werden die Fadenenden 16 von unten zuerst in den Schlitz des Einlegebleches 18 und dann in den Schlitz des Einlegebleches 19 eingeschlagen. Die Schlitze sind dabei so geformt, daß die Fadenenden 16 zwangsläufig hinter den L-förmigen Schnabelhaken 21 geraten. Wird nun der Bindeschnabel 20 durch Schwenken des Schwenkhebels 30 gedreht, so hintergreift sein Schnabelhaken 21 gemäß Fig. 4 das Fadenende 16 und bildet bei weiterem Verdrehen der Bindeschnabelwelle 20' nach einer weiteren halben Umdrehung eine aus Fig. 5 ersichtliche Schlaufe. Auch dabei hintergreift er die Fadenenden 16. Die dabei gebildete Fadenschlaufe wird während der nächsten halben Bindeschnabelumdrehung weiter verdreht, bis die in Fig. 6 dargestellte Lage des Bindeschnabels 20 erreicht ist. Wird die Bindeschnabelwelle 20' aus der Position des Bindeschnabels 20 gemäß Fig. 6 heraus weiter in demselben Sinne gedreht, so gelangt die Kurvenkontur 28' unter den Kurvenbolzen 24 und hebt den Steuerschieber 23 an. Von da an hat das Steuerende 22' der beweglichen Scherenhälfte 22 nicht mehr genügend Platz, um sich berührungslos innerhalb der Kulisse 23' zu bewegen. Es berührt vielmehr diese Kulisse 23' mit dem Stegende 22" und drückt sich dadurch nach oben bzw. schwenkt die bewegliche Scherenhälfte 22 nach außen, so daß sich der Bindeschnabel 20 öffnet. Infolgedessen übergreift der Bindeschnabel 20 die Fadenenden 16 mit dem L-förmigen Schnabelhaken 21 auf der einen und mit der beweglichen Scherenhälfte 22 auf der anderen Seite der Fadenenden 16 gemäß Fig. 8. Infolge der Drehung der Bindeschnabelwelle 20' gerät die Schließkontur bzw. das Stegende 22'" des Steuerendes 22' in Berührung mit der Kulisse 23' des Steuerschiebers 23, so daß der Bindeschnabel geschlossen wird und dabei die Fadenenden 16 abschneidet, wie aus Fig. 8 ersichtlich ist. Es erfolgt danach noch eine weitere Umdrehung der Bindeschnabelwelle 20', bis der Bindeschnabel 20 eine Stellung gemäß Fig. 9 erreicht hat. In dieser Stellung sind die Fadenenden 16 von der Fadenklemme des Bindeschnabels 20 eingeklemmt und damit festgehalten.To operate the knotter, the thread ends 16 are first driven into the slot of the insert plate 18 and then into the slot of the insert plate 19 from below. The slots are shaped so that the thread ends 16 inevitably come behind the L-shaped beak hook 21. If the binding beak 20 is now rotated by pivoting the pivoting lever 30, its beak hook 21 engages behind the thread end 16 according to FIG. 4 and, when the binding beak shaft 20 'is turned further, forms a loop as shown in FIG. 5 after a further half turn. Here, too, it engages behind the thread ends 16. The thread loop thus formed is further rotated during the next half turn of the binding beak until the position of the binding beak 20 shown in FIG. 6 is reached. If the binding bill shaft 20 'is rotated further out of the position of the binding bill 20 according to FIG. 6 in the same sense, the curve contour 28' comes under the cam bolt 24 and lifts the control slide 23. From then on, the control end 22 'has the movable Scherenhä l fte 22 is no longer sufficient space without contact inside the link 23' to move. Rather, it touches this link 23 'with the web end 22 "and thereby pushes upwards or swivels the movable scissor half 22 outwards, so that the binding beak 20 opens. As a result, the binding beak 20 overlaps the thread ends 16 with the L-shaped beak hook 21 on one side and with the movable scissor half 22 on the other side of the thread ends 16 according to FIG. 8. As a result of the rotation of the binding bill shaft 20 ', the closing contour or the web end 22'"of the control end 22 'comes into contact with the link 23'. of the control slide 23, so that the binding bill is closed and thereby cuts the thread ends 16, as can be seen from FIG. 8. There is then a further rotation of the binding bill shaft 20 'until the binding bill 20 has reached a position according to FIG. 9. In this position, the thread ends 16 are clamped by the thread clamp of the binding beak 20 and are thus held in place.

Danach werden bei stillstehendem Bindeschnabel 20 die spulen- bzw. fadenbremsenseitigen Fadenenden 16 angezogen, so daß die Fadenschlaufe 16' gestrafft wird, wie es in Fig. 11 dargestellt ist. Die Fadenenden 16 werden aus dem Bindeschnabel 20 herausgezogen bzw. der Bindeschnabel 20 öffnet sich, indem das Stegende 22" in den Bereich der Öffnungskontur der Kulisse 23' einläuft. Danach kann der Abspulvorgang vom Spulengatter fortgesetzt werden, da ein genügend fester Knoten entstanden ist, nämlich ein doppelter Katzenkopfknoten.Thereafter, when the binding beak 20 is at a standstill, the thread ends 16 on the spool or thread brake side are tightened, so that the thread loop 16 'is tightened, as shown in FIG. 11. The thread ends 16 are pulled out of the binding beak 20 or the binding beak 20 opens in that the web end 22 ″ runs into the area of the opening contour of the link 23 ′. The unwinding process can then be continued by the bobbin creel, since a sufficiently firm knot has formed, namely a double cat head knot.

Anschließend erfolgt die Rückstellung der Knotvorrichtung durch Rückschwenken des Schwenkhebels 30, so daß der Bindeschnabel 20 bzw. die Bindeschnabelwelle 20' wieder in die in Fig. 3 dargestellte Ausgangslage gelangen und für einen erneuten Knotvorgang bereit sind.The knotting device is then reset by swiveling back the pivoting lever 30 so that the binding beak 20 or the binding beak shaft 20 'return to the starting position shown in FIG. 3 and are ready for a new knotting process.

Auf die beschriebene Weise findet die Knotenbildung während 2 1/4 Bindeschnabelumdrehungen statt. Es wird ein zweifacher Katzenkopf hergestellt. Es können jedoch mit derselben Vorrichtung wahlweise auch einfache bzw. mehr als zweifache Katzenköpfe hergestellt werden, in dem der Bindeschnabelvorlauf verändert wird. Es muß also dafür gesorgt werden, daß die Bindeschnabelwelle 20' vor dem Anheben des Steuerschiebers 23 nur eine halbe bzw. zur Herstellung eines dreifachen Katzenkopfes 2 1/2 Umdrehungen macht, bevor sich der Bindeschnabel 20 öffnet. Das ist durch Wahl der Ausgangsstellung des Schwenkhebels 30 ohne weiteres möglich.In the manner described, the knot formation takes place during 2 1/4 turns of the binding beak. A double cat head is made. However, it is also possible to use the same device to produce single or more than double cat heads, in which the binding bill feed is changed. It must therefore be ensured that the binding bill shaft 20 'only makes half a turn or 2 1/2 turns before the control slide 23 is raised before the binding bill 20 opens to produce a triple cat head. This is easily possible by choosing the starting position of the pivot lever 30.

Die Rückstellung des Steuerschiebers 23 geschieht während des Bindeschnabelrücklaufs durch Rückstellkräfte der beweglichen Scherenhälfte 22, nachdem die Steuerkurve 28 den Kurvenbolzen 24 freigegeben hat.The control slide 23 is reset during the return of the binding bill by restoring forces of the movable scissor half 22 after the control cam 28 has released the cam pin 24.

Der Vorteil des erfindungsgemäßen Fadenknoters liegt also auch darin, auf einfache Weise ein- oder mehrfache Katzenkopfknoten zu erzeugen, so daß beispielsweise auch glatte Fäden mit mindestens doppelten Katzenkopfknoten geknotet und damit ausreichend haltbar sind.The advantage of the thread knotter according to the invention is therefore also that it can easily produce single or multiple cat head knots, so that, for example, even threads with at least double cat head knots are knotted and are therefore sufficiently durable.

Claims (6)

1. Apparatus for the production of tail knots, especially for creel frames, comprising a feeding device (18) for positioning two parallel yarn ends (16) on the knotter (15), wherein the yarn ends are laid across a knotting bill (20) which has an L-shaped bill hook (21) and the end of the bill hook engages the yarn ends from behind upon each passage of the rotationally-driven knotting bill (20), wherein the bill hook (21) is provided with a correspondingly L-shaped shearing blade (22) which is movable on the hook and which at one control end (22') co-operates with a coulisse (23') which controls the opening and closing of the knotting bill (20) which constitutes a yarn clamp, and wherein the coulisse is displaceable according to the rotational position of the knotting bill, characterised in that the coulisse (23') is arranged in a control slider (23) which is displaceable in one plane only.
2. Apparatus according to claim 1, characterised in that the control slider (23) is a front plate of a housing for the rotary drive of the knotting bill (20), said front plate being provided with a circular hole and being displaceable vertically in slider guides (25) of the housing.
3. Apparatus according to claim 1 or 2, characterised in that the control slider (23) comprises a cam pin (24) which co-operates with a control curve (28) which is parallel to the control slider and which is displaceable by the rotary drive.
4. Apparatus according to one of claims 1 to 3, characterised in that the control curve (28) is arranged coaxially with a gearwheel (27") of the rotary drive immediately behind the control slider (23) and is mounted on the gearwheel (27").
5. Apparatus according to any one of claims 1 to 4, characterised in that the rotary drive of the knotting bill (20) comprises an input shaft (29) powered by a pivot lever (30), an axially parallel intermediate shaft (27) geared to the input shaft (29) and driving the control curve (28), and a likewise axially parallel knotting bill shaft (20') powered by the intermediate shaft.
6. Apparatus according to any one of claims 1 to 5, characterised in that the side walls (17') of the housing for the rotary drive constitute, with forwardly projecting feed plates (18, 19) having feeding slots, the feeding device of the knotter.
EP84109861A 1983-10-07 1984-08-18 Knot-tying device Expired EP0139968B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19833336509 DE3336509A1 (en) 1983-10-07 1983-10-07 DEVICE FOR PRODUCING CAT HEAD NODES
DE3336509 1983-10-07

Publications (3)

Publication Number Publication Date
EP0139968A2 EP0139968A2 (en) 1985-05-08
EP0139968A3 EP0139968A3 (en) 1985-06-05
EP0139968B1 true EP0139968B1 (en) 1986-10-15

Family

ID=6211240

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Application Number Title Priority Date Filing Date
EP84109861A Expired EP0139968B1 (en) 1983-10-07 1984-08-18 Knot-tying device

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US (1) US4568116A (en)
EP (1) EP0139968B1 (en)
DE (2) DE3336509A1 (en)
ES (1) ES281641Y (en)
IT (2) IT8453863V0 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2126433B1 (en) * 1995-05-19 1999-12-01 I Marsans Ricard Borras MACHINE TO SHAPE KNOTS.
KR101736154B1 (en) * 2015-07-06 2017-05-17 (주)하이모 Knot system, knot method and manufacturing method of wig using the same

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2670230A (en) * 1951-05-05 1954-02-23 Universal Winding Co Knotter
GB1176186A (en) * 1966-06-03 1970-01-01 Annodatori Tessili Mesdan A Yarn Cutting and Securing Device for a Knot-Tying Machine
IT1006743B (en) * 1974-01-04 1976-10-20 Mes Dan Di Messa Pietro APPARATUS FOR KNOTING WIRES WITH THE KNOT SO-CALLED AS WEAVER
DE2461328C2 (en) * 1974-12-24 1985-01-31 Bocon Zofingen AG, Zofingen Thread knot device
DE2539923A1 (en) * 1975-09-09 1977-04-21 Stueber Kg Otto Thread knot tier with toothed belt drive - allowing easier adjustment due to easier access without opening housing
CS179229B1 (en) * 1975-11-12 1977-10-31 Jan Micanek Equipment for propulsion of nodulated mandrels of knotting device
DE2642268A1 (en) * 1976-09-21 1978-03-23 Strojtex Strojirny Textilniho Equipment for joining two threads by fisherman's knot - with arrangement forming part knots at thread ends and for pulling them in fisherman's knot
IT1063465B (en) * 1976-11-03 1985-02-11 Mesdan Spa AUTOMATIC KNOTTER FOR THE FORMATION OF THE FISHER'S KNOT PARTICULARLY FOR LARGE TITLE YARNS
DE2655042C2 (en) * 1976-12-04 1986-03-20 W. Schlafhorst & Co, 4050 Mönchengladbach Knotting device
DE2741786C2 (en) * 1977-09-16 1983-12-15 Karl Mayer Textil-Maschinen-Fabrik Gmbh, 6053 Obertshausen Knotters for winding machines
DE2741785C2 (en) * 1977-09-16 1983-10-20 Karl Mayer Textil-Maschinen-Fabrik Gmbh, 6053 Obertshausen Knotters for winding machines
IT7921974V0 (en) * 1979-06-28 1979-06-28 Mesdan Spa HOOK FOR KNOTTERS.
DD218524A3 (en) * 1982-10-11 1985-02-06 Fortschritt Veb K KNOCKING DEVICE FOR BALE PRESSES
DD218985A3 (en) * 1982-11-22 1985-02-20 Horst Raussendorf KNUEPFER FOR THE BINDING DEVICE OF A BALE PRESS

Also Published As

Publication number Publication date
IT8467968A0 (en) 1984-09-28
EP0139968A2 (en) 1985-05-08
IT1182299B (en) 1987-10-05
ES281641Y (en) 1985-10-01
ES281641U (en) 1985-02-16
IT8453863V0 (en) 1984-09-28
US4568116A (en) 1986-02-04
DE3460963D1 (en) 1986-11-20
EP0139968A3 (en) 1985-06-05
DE3336509A1 (en) 1985-04-25

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