DE2606198B1

DE2606198B1 - False twisting yarn threading process - into device which has one set of false twisting discs stopped during the threading operation

Info

Publication number: DE2606198B1
Application number: DE19762606198
Authority: DE
Inventors: Gerd Munnekehoff
Original assignee: Barmag Barmer Maschinenfabrik AG
Current assignee: Oerlikon Barmag AG
Priority date: 1976-02-17
Filing date: 1976-02-17
Publication date: 1977-08-11
Also published as: DE2606198C2

Abstract

A process and apparatus are described for threading a yarn into a false twisting unit composed of at least three sets of friction discs mounted on parallel axes. One of the friction dics sets and its drive axis is halted during the yarn threading operation. The rotary speed of one axis, supporting friction false twisting discs, can be varied and stopped, independently of the action of the other two axes and their discs. A yarn guide is positioned above and/or below the false twisting assembly, with its movement path passing vertically through the centre of the polygon defined by the false twisting discs.

Description

F i g. 1 zeigt einen Friktionsfalschdraller in schematisierter Darstellung, wobei die Gestellplatten 4 und 5 entlang der in F i g. 2 in Draufsicht dargestellten Linie I-I geschnitten sind In den Gestellplatten 4 und 5 sind die Achsen 1,2,3 drehbar gelagert. Die Achsen werden durch die Elektromotoren 6, 7, 8 gleichsinnig und mit gleicher Drehzahl angetrieben. Auf den Achsen 1, 2, 3 sind die Scheiben 11, 12, 13 in stets gleichsinniger Aufeinanderfolge drehfest aufgesteckt Die Achsen 1, 2, 3 sind - wie aus der Draufsicht nach F i g. 2 ersichtlich, auf den Eckpunkten eines gleichseitigen Dreiecks angeordnet Die Friktionsscheiben 11,12,13 überlappen sich im Mittelpunkt dieses gleichseitigen Dreiecks, so daß dort ein ebenfalls gleichseitiges Überlappungsdrei- F i g. 1 shows a frictional false twister in a schematic representation, the frame plates 4 and 5 along the lines shown in FIG. 2 shown in plan view Line I-I are cut. In the frame plates 4 and 5, the axes 1, 2, 3 are rotatable stored. The axes are in the same direction and with the electric motors 6, 7, 8 driven at the same speed. On axes 1, 2, 3 are the disks 11, 12, 13 non-rotatably attached, always in the same direction, axes 1, 2, 3 are - as from the plan view according to F i g. 2 can be seen on the corner points of a Equilateral triangle arranged The friction disks 11, 12, 13 overlap at the center of this equilateral triangle, so that there is also an equilateral Overlap three-

eck 14 besteht Die gleichgestalteten Gestellplatten 4 und 5 weisen einen Einlegschlitz 9 auf, welcher in der Draufsicht nach Fig. 2 den von den Scheiben 12 und 13 gebildeten Zwickel 10 überdeckt und bis in das Gebiet des Überlappungsdreiecks 14 reicht, im wesentlichen also mit der Mittelsenkrechten auf der durch die Achsen 2, 3 begrenzten Dreiecksseite zusammenfällt Ein senkrecht zum Fadenlauf schwenkbarer Fadenführer 15, der in Fig. 1 zweiarmig mit einem Arm oberhalb und einem Arm unterhalb des Friktionsfalschdrallers dargestellt ist, dient zum Einführen des Fadens in den Einlegeschlitz 9. Die Schwenkachse 19 des Fadenführers 15 ist so angeordnet, daß sich die Führungsöse 20 im wesentlichen auf der Mittelsenkrechten zu der durch die Achsen 2,3 begrenzten Dreiecksseite bewegt Die Elektromotoren 6, 7, 8 können als Synchronmotoren oder Gleichstrommotoren ausgeführt sein. Sie sind mit einstellbarer Drehzahl über den Wandler 21 (Frequenzwandler in F i g. 1 oder Spannungswandler in F i g. ia) steuerbar. Mit 22 ist ein Schalter zur Drehrichtungsumkehr der Friktionsscheiben bezeichnet. Im Normalbetrieb werden die Elektromotoren 6, 7, 8 mit gleicher Drehzahl und im gleichen Drehsinn angetrieben. Bei Umkehr der Drehrichtung und damit der Zwirnrichtung werden auch die Friktionsscheiben 11, 12, 13 in ihrer axialen Aufeinanderfolge vertauscht Von den Zuleitungen 16, 17, 18 zu den Elektromotoren 6,7,8 weisen die Zuleitungen 17 und 18 jeweils einen Schalter, zB. Handschalter 23, 24 auf. Durch diese Handschalter können die Elektromotoren 7 bzw. 8 abgestellt oder in F i g. 1 a über Vorschaltwiderstand R verlangsamt werden.corner 14 consists of the identical frame plates 4 and 5 an insertion slot 9, which in the plan view of FIG. 2 by the disks 12 and 13 formed gusset 10 covered and up to the area of the overlap triangle 14 is enough, essentially with the vertical line through the axes 2, 3 limited side of the triangle coincides A swiveling perpendicular to the grain Yarn guide 15, which in Fig. 1 has two arms with one arm above and one arm below of the Fraktionsfalschdrallers is shown, is used to introduce the thread into the Insertion slot 9. The pivot axis 19 of the thread guide 15 is arranged so that the guide eye 20 is substantially on the mid-perpendicular to the through the Axes 2,3 limited triangle side moves The electric motors 6, 7, 8 can as Synchronous motors or DC motors can be designed. They are adjustable with Speed via the converter 21 (frequency converter in FIG. 1 or voltage converter in Fig. ia) controllable. At 22 is a switch for reversing the direction of rotation of the friction disks designated. In normal operation, the electric motors 6, 7, 8 are at the same speed and driven in the same direction of rotation. When reversing the direction of rotation and thus the The direction of twisting is also the friction disks 11, 12, 13 in their axial succession interchanged From the supply lines 16, 17, 18 to the electric motors 6,7,8 point the Leads 17 and 18 each have a switch, e.g. Hand switch 23, 24 open. By this manual switch can turn off the electric motors 7 or 8 or in FIG. 1 a can be slowed down via series resistor R.

Die Schaltung nach F i g. 1 a ist anwendbar, wenn es sich bei den Elektromotoren 6, 7,8 um Gleichstrommotren mit Spannungssteuerung handelt. In diesem Fall kann durch Schaltung der Handschalter 23, 24 die Betriebsspannung herabgesetzt werden.The circuit according to FIG. 1 a is applicable if the Electric motors 6, 7, 8 are direct current motors with voltage control. In this In this case, the operating voltage can be reduced by switching the manual switch 23, 24 will.

Durch die Handschalter 23, 24 ist es also möglich, entweder den Elektromotor 7 oder den Elektromotor 8 abzuschalten oder in seiner Drehzahl herabzusetzten. The manual switch 23, 24 therefore makes it possible to either use the electric motor 7 or switch off the electric motor 8 or reduce its speed.

Das Verfahren zum Fadenanlegen wird nunmehr in folgender Weise ausgeführt: Bei der in F i g. 2 dargestellten Drehrichtung der Scheiben 11,12, 13 im Gegenuhrzeigersinn sind auch die Scheiben 11, 12, 13 im Gegenuhrzeigersinn hintereinander auf ihre jeweiligen Achsen aufgesteckt Zum Fadenanlegen wird durch Betätigung des Handschalters 24 der Elektromotor 8 kurzzeitig ausgeschaltet oder seine Drehzahl stark herabgesetzt. Sodann wird der Fadenführer 15 mit seinen beiden Armen verschwenkt und hierdurch der Faden in den Einlegschlitz 9 und den durch die Scheiben 12, 13 gebildeten Zwickel gebracht. The procedure for thread application is now carried out in the following way: In the case of the in FIG. 2 shown direction of rotation of the disks 11, 12, 13 counterclockwise are also the disks 11, 12, 13 counterclockwise one behind the other on their attached to the respective axles 24 the electric motor 8 is switched off for a short time or its speed is greatly reduced. Then the thread guide 15 is pivoted with its two arms and thereby the thread in the insertion slot 9 and the gusset formed by the discs 12, 13 brought.

Die mit ihrer Nenndrehzahl rotierenden Scheiben 12 nehmen den Faden mit und fördern ihn in das Zentrum des zwischen den Achsen 1, 2, 3 aufgespannten gleichseitigen Dreiecks, wo er sich im Bereich des Überlappungsdreiecks 14 in seinem Betriebsfadenlauf befindet Diese Bewegung wird durch die Verschwenkung des Fadenführers 15 gefördert. Es sei bemerkt, daß der Fadenführer 15 zur Ausführung des Verfahrens nicht unbedingt erforderlicht ist Weiterhin sei bemerkt, daß naheliegenderweise zum Fadenanlegen auch die Drehrichtung des Elektromotors 8 und der Friktionsscheiben 13 umgekehrt werden kann, da hierdurch das Fadeneinlegen erleichtert wird. Zu dieser Maßnahme wird man bei feinen Titern und empfindlichem Fadenmaterial greifen.The disks 12 rotating at their nominal speed take the thread with and promote it to the center of the spanned between axes 1, 2, 3 equilateral triangle, where it is in the area of the overlap triangle 14 in his The operating thread run is located This movement is caused by the pivoting of the thread guide 15 funded. It should be noted that the thread guide 15 to carry out the method is not absolutely necessary. Furthermore, it should be noted that it is obvious also the direction of rotation of the electric motor 8 and the friction disks for thread placement 13 can be reversed, as this facilitates thread insertion. To this Measure will be taken with fine titers and sensitive thread material.

Bei umgekehrter Drehrichtung der Scheiben 11, 12, 13 im Uhrzeigersinn und entsprechend anderer Zwirnrichtung des Fadens sind die Scheiben 11, 12, 13 auch im Uhrzeigersinn auf ihren Achsen hintereinander folgend angeordnet In diesem Falle wird zum Fadenanlegen der Handschalter 23 betätigt und hierdurch der Elektromotor 7 stillgesetzt oder in seiner Drehzahl stark herabgesetzt Nunmehr fördert die Scheibe 13 den durch den Fadenführer 15 in den Einlegschlitz 9 und den Zwickel 10 geführten Faden in das Zentrum des gleichseitigen Dreiecks und damit seinen Betriebsfadenlauf. If the direction of rotation of the disks 11, 12, 13 is reversed, clockwise and the disks 11, 12, 13 are also in accordance with a different twisting direction of the thread arranged one after the other in a clockwise direction on their axes In this case the manual switch 23 is actuated to apply the thread and thereby the electric motor 7 stopped or its speed greatly reduced. The disk is now promoting 13 passed through the thread guide 15 into the insertion slot 9 and the gusset 10 Thread in the center of the equilateral triangle and thus its operational thread course.

F i g. 3 zeigt schematisch einen Friktionsfalschdraller, dessen Achsen 1, 2, 3 durch Wirtel 25 und Treibriemen 26 über eine getriebliche Verbindung 27 (z. B. F i g. 3 shows schematically a friction false twister, its axes 1, 2, 3 by whorls 25 and drive belt 26 via a geared connection 27 (e.g.

Zahnriemen) angetrieben werden.Toothed belt) are driven.

Die Draufsicht dieses Friktionsfalschdrallers entspricht der F i g. 2. Bei dem Friktionsfalschdraller nach F i g. 3 weisen die Achsen 2 und 3 jeweils eine Kupplung 28 auf. Diese Kupplungen sind beispielsweise als Rutschkupplungen ausgebildet, so daß die Achse 2 durch Bremshebel 29 bzw. Achse 3 durch Bremshebel 30 stillgesetzt oder in ihrer Drehzahl herabgesetzt werden kann. The top view of this frictional false twister corresponds to the F i G. 2. In the frictional false twister according to FIG. 3 have axes 2 and 3, respectively a clutch 28. These clutches are, for example, as slip clutches formed so that the axis 2 by brake lever 29 and axis 3 by brake lever 30 can be stopped or reduced in speed.

Das Anlegverfahren vollzieht sich so wie zu den F i g. 1 und 2 beschrieben. The creation process is carried out as in FIGS. 1 and 2 described.

Claims

Claims: 1. Method for inserting the thread into a friction false twister, consisting of at least three friction disks rotating in the same direction and at the same speed consists, whose mutually parallel axes on the corners of an equilateral polygon are arranged such that the friction disks are in the center of the polygon overlap, with the thread running parallel to the axes being inserted into the gap the friction disks of two adjacent axles on the outside of the polygon with each other, characterized in that the speed of the friction body one of the adjacent axes is reduced for the duration of the thread application.

2. Friction false twister of a texturing machine for man-made fibers, consisting of at least three friction disks rotating in the same direction and at the same speed consists, whose mutually parallel axes on the corners of an equilateral polygon are arranged such that the friction disks are in the center of the polygon overlap, characterized in that the speed of the friction bodies of an axis can be reduced independently of the speed of the friction body of the other axis.

3. Friction false twister according to claim 2, characterized by a thread guide that is on one above and / or below the friction false twister arranged, substantially coinciding with a perpendicular line of the polygon Trajectory is movable.

4. Friction false twister according to claim 2 or 3, characterized in that that the coaxial friction disks are each driven by an electric motor are and that one of the electric motors is autonomous and independent of the others can be switched off.

5. Friction false twister according to claim 2 or 3, characterized in that that the axes with the friction disks attached to them in a rotationally fixed manner are geared are interconnected and that a releasable coupling in the transmission connection is intended for one of the axes.

6. Friction false twister according to claim 5, characterized in that that one of the axes is made in two parts, both parts by a detachable Coupling are interconnected.

The invention relates to a method for introducing the thread into a frictional false twister consisting of three or more rotating synchronously and in the same direction There is friction disks whose axes are parallel to one another on the corner points of an equilateral polygon are mounted in such a way that the friction disks overlap at the center of the polygon, with the one running parallel to the axes Thread is placed in the gap between the friction disks of two adjacent ones Form axes on the outside of the polygon with one another, as well as those for implementation This method required device-like design of this friction false twisting device.

The DT-AS 2444530 is such a Procedure and a corresponding Device known. For this purpose, the friction disks are mounted on three stationary ones Waves arranged. A threading mechanism, the disengageable one, is used to apply the thread Has thread holder and thread guide arms. The thread to be laid must be used when laying both between the stationary guide arms on the one hand and the friction disks the one shaft on the other hand as well as between the friction disks moving in opposite directions the neighboring waves are forcibly forced through and dragged. The string is exposed to high tensile forces that can easily lead to thread breaks.

The application of the thread in the friction false twister described above In another method, this is done by moving an axis out of its operating position is shifted out and parallel to itself (DT-OS 22 13 881). This creates between the disks of this axis and those of the adjacent axis, which are otherwise overlap, a gap in which the thread running parallel to the axes is inserted can be.

In a further method it is provided that at least two Axes can be moved or adjusted at an acute angle to each other (DT-OS 2213147). The disadvantage of the latter method is the complicated mechanical structure.

The invention is based on the object for one by the preamble known Friction Falschdraller an operating state and the necessary for this To propose means by which the mooring or

Insertion of the thread into the overlap area of the friction disks in a shortened and simplified manner without the use of force and danger of thread breaks, is practically made by the device itself. The procedure The aim is to automate the entire creation process - of which the threading is one Represents partial process - enable.

The solution according to the invention results - as far as the method is concerned - From the characterizing part of claim 1, what the Friction Falschdraller and his Design concerns, from the characterizing part of claim 2 with advantageous features and further developments according to claims 3 to 6.

In the following the invention is based on an exemplary embodiment explained. It shows F i g. 1 the view of a frictional false twister - (schematic) in section I-I with synchronous motors and gearshift; Fig. La a circuit for DC motors of the frictional false twister; F i g. 2 the top view of the frictional false twister according to Fig. 1; F i g. 3 another embodiment.