EP0417618B1 - Method and apparatus for pneumatically removing a broken yarn end from the winding of a yarn winding member - Google Patents

Method and apparatus for pneumatically removing a broken yarn end from the winding of a yarn winding member Download PDF

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Publication number
EP0417618B1
EP0417618B1 EP90117036A EP90117036A EP0417618B1 EP 0417618 B1 EP0417618 B1 EP 0417618B1 EP 90117036 A EP90117036 A EP 90117036A EP 90117036 A EP90117036 A EP 90117036A EP 0417618 B1 EP0417618 B1 EP 0417618B1
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EP
European Patent Office
Prior art keywords
thread
winding
nozzle
ring rail
process according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP90117036A
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German (de)
French (fr)
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EP0417618A3 (en
EP0417618A2 (en
Inventor
Helmut Dipl.-Ing. Nickolay
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.)
Oerlikon Textile GmbH and Co KG
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Zinser Textilmaschinen GmbH
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Publication of EP0417618A2 publication Critical patent/EP0417618A2/en
Publication of EP0417618A3 publication Critical patent/EP0417618A3/en
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    • DTEXTILES; PAPER
    • D01NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01HSPINNING OR TWISTING
    • D01H15/00Piecing arrangements ; Automatic end-finding, e.g. by suction and reverse package rotation; Devices for temporarily storing yarn during piecing
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H67/00Replacing or removing cores, receptacles, or completed packages at paying-out, winding, or depositing stations
    • B65H67/08Automatic end-finding and material-interconnecting arrangements
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00Handled material; Storage means
    • B65H2701/30Handled filamentary material
    • B65H2701/31Textiles threads or artificial strands of filaments

Definitions

  • the invention relates to a method and a device for the pneumatic detachment of a broken thread end from the cone of a thread winding body in the region of a ring bank of a spinning machine by at least one thread end blow-off nozzle which can be activated depending on the position of the cone of turns.
  • Such a device is known from DE 36 00 916 A.
  • the area in which the thread end blow-off nozzle is activated is assigned to the position of the ring bank insofar as the thread end blow-off nozzle is always guided close under the ring bank before it is activated. It is assumed that the winding cone, on which the end of the broken thread lies, is in the winding area that the ring rail is currently covering.
  • the object of the present invention is accordingly to ensure in a simple manner that the position of the thread-end blow-off nozzle and thus its range of action is relocated in such a way that it brushes the winding cone of the thread winding body to be supplied irrespective of its current position and thus can detach the thread end from the winding.
  • the position of a single thread end blow-off nozzle can be varied with respect to its position in relation to the winding cone. If - as is usually the case - the ring bank is advanced upwards, the nozzle can be lowered from its starting position. This lowering can take place gradually until the thread is gripped.
  • a plurality of blow-off nozzles arranged one above the other can be activated in succession.
  • a sensory device which determines the position of the winding cone of the thread winding body, with which the position of an individual thread end blowing nozzle is controlled or the successive activation in the relevant position is effected by a plurality of thread end blowing nozzles.
  • At least one further blowing nozzle which is arranged above the ring rail and directed against the upper end region of the sleeve of the thread winding body, has proven to be particularly advantageous.
  • the blowing jet of this nozzle supports the only weak blowing jet of the thread-end blow-off nozzle at this point and possibly conveys thread loops around the end region of the sleeve into the effective area of a suction bell.
  • a number of sleeves 2 are arranged above spindles on a spindle bench 1 of a ring spinning machine, with two thread winding bodies 3 being located on these sleeves, each of which has a winding cone 4 in the upper area, i.e. in the area of a ring bench 5.
  • a blow jet B of a thread-end blow-off nozzle 6 acts on this winding cone 4 of the thread winding body 3, specifically when a thread breakage has occurred and the corresponding thread end is to be detached from the winding cone 4.
  • the nozzle 6 is fastened on a threaded nut 10 which is arranged on a threaded spindle 9.
  • This threaded spindle 9 is connected to a drive 11.
  • This nozzle 6 is in turn connected to an air source 15 via a valve 24.
  • the valve 24 is controlled by an actuating element 13.
  • the thread winding body 3 there is a suction bell 19 known per se with a thread sensor 14 also known per se.
  • the thread sensor 14, the actuating element 13 and the drive 11 for the threaded spindle 9 are each connected to a control device 12 via lines 16, 17 and 18 .
  • the control device 12 can receive its trigger command via the line 18 from the thread sensor 14 of the suction cup 19, this control device in turn controlling the drive 11 of the threaded spindle 9 and the actuating device 13 for the air supply to the thread-end blow-off nozzle 6 via the lines 16 and 17.
  • the control device 12 controls the height position of the blowing nozzle 6 in dependence on the height position of the ring bank 5 given to it by the machine control via the input 25 so that the blowing nozzle 6 is at the beginning of the blowing close to the winding cone located there under normal circumstances.
  • a blast air jet B is then triggered by actuating the valve.
  • the nozzle 6 can be lowered from its starting position until the thread sensor 14 feels a thread.
  • the nozzle is gradually lowered until the thread is gripped.
  • a plurality of nozzles 6, 6 ', 6 ⁇ are arranged at different heights, which can be activated one after the other, starting from the top.
  • Each of these nozzles 6, 6 ', 6 ⁇ is connected to a corresponding valve and an actuating device 13, 13' and 13 ⁇ , which in turn are connected via lines 17, 17 'and 17 ⁇ to a control device 12'.
  • the three, one above the other nozzles 6, 6 ', 6 ⁇ are connected to an air source 15 via corresponding lines.
  • the nozzles 6, 6 ', 6' are tracked by means not shown in detail of the movement of the ring rail 5, so that the uppermost nozzle 6 is always in the position in which it can optimally act on the winding cone 4 lying in its expected position. If here in a reasonable time after switching on the blast heater B from the nozzle 6 of the thread sensor 14 feels no thread, the control device 12 'closes the nozzle 6 and opens the nozzle 6'. For this purpose, the control device has a time measuring element. If the thread sensor 14 does not feel a thread in the tube adjoining the funnel 19 even in a reasonable time after switching on the blower B from the nozzle 6 ', the control device 12' causes the nozzle 6 'to close and the nozzle 6 ⁇ to open. If here too no thread is felt after a reasonable time, it can be assumed that the end of the thread cannot be found.
  • a sensory device 8 with three sensors 7, 7 'and 7 ⁇ is used.
  • This sensory device 8 is connected via a line 20 to a control device 12 ', which in turn, analogously to the design according to FIG. 1, via line 16 with the drive 11 for the threaded spindle 9 and via line 17 with the actuating element 13 for control the air from the air source 15 communicates.
  • the sensors 7, 7 'and 7 ⁇ detect the position of the winding cone 4 and accordingly control the height position of the nozzle 6, which can be changed in its height position via the drive 11 and the threaded nut 10 and the threaded spindle 9.
  • this additional nozzle 22 loops of thread which sometimes wrap around the upper end region of the sleeve 22 and prevent the end of the thread from being gripped, are blown off and guided into the effective area of the suction bell 19.
  • This additional nozzle 22 is particularly effective when the effective blowing nozzle 6, 6 'or 6' is far below the spinning ring and the effect of its blowing jet in the area of the spinning ring has already decreased considerably.
  • it is also advantageous regardless of the use of height-adjustable or height-offset blowing nozzles if there is a considerable distance between the winding cone 4 and the upper end of the sleeve 2, that is to say if the winding cone is still in the lower region of the sleeve at the start of the withdrawal or if very long sleeves are used be used. It has been shown that in this case detached thread ends loop around the upper region of the sleeve and do not get into the suction nozzle 19.
  • the effect of the additional nozzle 22 can be supported and reinforced in a further embodiment of the invention by an air baffle 21.
  • the additional nozzle 22 can be operated simultaneously with one of the nozzles 6, 6 ', 6 ⁇ or staggered in time after this. Your blow jet is just like that of the nozzles 6, 6 ', 6 ⁇ directed at an acute angle against the axis of the sleeve 2.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Replacing, Conveying, And Pick-Finding For Filamentary Materials (AREA)

Description

Die Erfindung bezieht sich auf ein Verfahren und eine Vorrichtung zum pneumatischen Ablösen eines gebrochenen Fadenendes vom Windungskegel eines Fadenwicklungskörpers im Bereich einer Ringbank einer Spinnmaschine durch mindestens eine Fadenend-Abblasdüse, die in Abhängigkeit von der Lage des Windungskegels aktivierbar ist.The invention relates to a method and a device for the pneumatic detachment of a broken thread end from the cone of a thread winding body in the region of a ring bank of a spinning machine by at least one thread end blow-off nozzle which can be activated depending on the position of the cone of turns.

Um Fadenbrüche an Ringspinnmaschinen zu beheben, muß das Ende des gebrochenen Fadens, das auf dem zum Zeitpunkt des Bruches des Fadens bestrichenen Windungskegel liegt, gefunden und aufgenommen werden, um mit der vom Streckwerk zugeführten Lunte verbunden zu werden. Bei selbsttätig arbeitenden Fadenansetzgeräten ist hierfür eine aktivierbare Blasdüse vorgesehen, deren Blasstrahl auf diesen Windungskegel gerichtet ist und das Fadenende abblasen soll.In order to fix thread breaks on ring spinning machines, the end of the broken thread, which lies on the cone of the thread which was coated at the time of the break of the thread, must be found and picked up in order to be connected to the sliver fed by the drafting device. In the case of automatically operating thread attaching devices, an activatable blowing nozzle is provided for this purpose, the blowing jet of which is directed onto this conical winding and is intended to blow off the thread end.

Eine derartige Einrichtung ist aus der DE 36 00 916 A bekannt. Hierbei ist der Bereich, in dem die Fadenende-Abblasdüse aktiviert wird, der Stellung der Ringbank insofern zugeordnet, als die Fadenende-Abblasdüse vor ihrer Aktivierung stets dicht unter die Ringbank geführt wird. Es wird dabei davon ausgegangen, daß sich der Windungskegel, auf dem das Ende des gebrochenen Fadens liegt, in dem Bewicklungsbereich befindet, den die Ringbank derzeit bestreicht.Such a device is known from DE 36 00 916 A. Here, the area in which the thread end blow-off nozzle is activated is assigned to the position of the ring bank insofar as the thread end blow-off nozzle is always guided close under the ring bank before it is activated. It is assumed that the winding cone, on which the end of the broken thread lies, is in the winding area that the ring rail is currently covering.

Dies ist aber nur dann der Fall, wenn das Suchen des Endes des gebrochenen Fadens kurz nach dessen Bruch erfolgt. Bedingt durch die Umlaufzeit einer selbsttätigen Fadenbruchbehebungsvorrichtung vergeht jedoch zwischen dem Auftreten des Fadenbruches und dem Suchen des Fadenendes eine gewisse Zeit. In Abhängigkeit von der verstrichenen Zeit und der Fortschaltgeschwindigkeit der Ringbank kann die Ringbank sich von dem Bewicklungsbereich, in dem der das Ende des gebrochene Fadens enthaltene Windungskegel liegt, u.U. so weit wegbewegt haben, daß die Fadenende-Abblasdüse diesen Windungskegel nicht mehr erreicht und das Suchen des Fadenendes erfolglos bleiben muß.However, this is only the case if the search for the end of the broken thread takes place shortly after it has broken. Due to the round trip time of an automatic thread break fixture however, a certain amount of time passes between the occurrence of the thread break and the search for the thread end. Depending on the elapsed time and the advancing speed of the ring bank, the ring bank may have moved so far away from the winding area in which the winding cone containing the end of the broken thread is located that the thread-end blow-off nozzle no longer reaches this winding cone and searching the thread end must remain unsuccessful.

Die Aufgabe der vorliegenden Erfindung besteht demgemäß darin, auf einfache Weise zu gewährleisten, daß die Position der Fadenend-Abblasdüse und damit deren Wirkungsbereich so verlegt wird, daß sie in der gewünschten Weise den Windungskegel des zu versorgenden Fadenwicklungskörpers unabhängig von dessen aktueller Lage bestreichen und damit das Fadenende von der Wicklung ablösen kann.The object of the present invention is accordingly to ensure in a simple manner that the position of the thread-end blow-off nozzle and thus its range of action is relocated in such a way that it brushes the winding cone of the thread winding body to be supplied irrespective of its current position and thus can detach the thread end from the winding.

Diese Aufgabe wird erfindungsgemäß durch das im Kennzeichen des ersten Anspruches offenbarte Verfahren gelöst. Hierduch ergibt sich der Vorteil, daß der Wirkungsgrad eines Fadenansetzgerätes zum selbsttätigen Beheben von Fadenbrüchen insofern verbessert wird, als sich die Fadenend-Abblasdüse stets in eine Position bewegt, in der sich der das Ende des gebrochenen Fadens enthaltende Windungskegel befindet und damit in die Lage versetzt wird, auch dann das Fadenende abzulösen, wenn die Ringbank den Bewicklungsbereich des Fadenwicklungskörpers verlassen hat.This object is achieved according to the invention by the method disclosed in the characterizing part of the first claim. This results in the advantage that the efficiency of a thread application device for automatically eliminating thread breaks is improved in that the thread-end blow-off nozzle always moves into a position in which the winding cone containing the end of the broken thread is located and thus enables it will also detach the thread end when the ring bench has left the winding area of the thread winding body.

In einer ersten Ausführungsform der Erfindung kann die Lage einer einzelnen Fadenende-Abblasdüse bezüglich ihrer Position zum Windungskegel variiert werden. Wenn - wie meist üblich - die Ringbank nach oben fortgeschaltet wird, kann die Düse aus ihrer Ausgangslage abgesenkt werden. Dieses Absenken kann schrittweise bis zum Erfassen des Fadens erfolgen.In a first embodiment of the invention, the position of a single thread end blow-off nozzle can be varied with respect to its position in relation to the winding cone. If - as is usually the case - the ring bank is advanced upwards, the nozzle can be lowered from its starting position. This lowering can take place gradually until the thread is gripped.

In einer weiteren Ausführungsform der Erfindung können mehrere, übereinander angeordnete Abblasdüsen nacheinander aktiviert werden.In a further embodiment of the invention, a plurality of blow-off nozzles arranged one above the other can be activated in succession.

In weiterer Ausgestaltung der Erfindung wird eine sensorische Einrichtung eingesetzt, die die Lage des Windungskegels des Fadenwicklungskörpers ermittelt, wobei über diese die Position einer einzelnen Fadenende-Abbladüse gesteuert oder die aufeinanderfolgende Aktivierung in der betreffenden Position stehender von mehreren Fadenende-Abblasdüsen bewirkt wird.In a further embodiment of the invention, a sensory device is used which determines the position of the winding cone of the thread winding body, with which the position of an individual thread end blowing nozzle is controlled or the successive activation in the relevant position is effected by a plurality of thread end blowing nozzles.

Vorteilhafte Ausführungen für zur Ausführung dieser Verfahren geeigente Vorrichtungen ergeben sich aus den Unteransprüchen. Als besonders vorteilhaft hat sich darunter mindestens eine weitere, oberhalb der Ringbank angeordnete, gegen den oberen Endbereich der Hülse des Fadenwicklungskörpers gerichtete Blasdüse erwiesen. Der Blasstrahl dieser Düse unterstützt den an dieser Stelle nur noch schwachen Blasstrahl der Fadenend-Abblasdüse und fördert sich eventuell um den Endbereich der Hülse legende Fadenschlingen in den Wirkungsbereich einer Saugglocke weiter.Advantageous designs for devices suitable for carrying out these methods result from the subclaims. At least one further blowing nozzle, which is arranged above the ring rail and directed against the upper end region of the sleeve of the thread winding body, has proven to be particularly advantageous. The blowing jet of this nozzle supports the only weak blowing jet of the thread-end blow-off nozzle at this point and possibly conveys thread loops around the end region of the sleeve into the effective area of a suction bell.

Die Erfindung wird nachfolgend anhand von in der Zeichnung dargestellten Ausführungsformen näher beschrieben. In der Zeichnung zeigen:

Fig. 1 bis 4
vier verschiedene Ausführungsmöglichkeiten der Erfindung in schematischer Seitenansicht;
Fig. 5
eine Draufsicht auf die Ausführungsform nach Fig. 4, teils gebrochen.
The invention is described below with reference to embodiments shown in the drawing. The drawing shows:
1 to 4
four different embodiments of the invention in a schematic side view;
Fig. 5
a top view of the embodiment of FIG. 4, partly broken.

Nach Fig. 1 sind auf einer Spindelbank 1 einer Ringspinnmaschine eine Anzahl von Hülsen 2 über Spindeln angeordnet, wobei sich auf diesen Hülsen 2 Fadenwicklungskörper 3 befinden, welche im oberen Bereich, d.h., im Bereich einer Ringbank 5 jeweils einen Windungskegel 4 aufweisen. Auf diesen Windungskegel 4 des Fadenwicklungskörpers 3 wirkt ein Blasstrahl B einer Fadenend-Abblasdüse 6 ein, und zwar dann, wenn ein Fadenbruch aufgetreten und das entsprechende Fadenende vom Windungskegel 4 abgelöst werden soll.According to FIG. 1, a number of sleeves 2 are arranged above spindles on a spindle bench 1 of a ring spinning machine, with two thread winding bodies 3 being located on these sleeves, each of which has a winding cone 4 in the upper area, i.e. in the area of a ring bench 5. A blow jet B of a thread-end blow-off nozzle 6 acts on this winding cone 4 of the thread winding body 3, specifically when a thread breakage has occurred and the corresponding thread end is to be detached from the winding cone 4.

Die Düse 6 ist auf einer Gewindemutter 10 befestigt, welche auf einer Gewindespindel 9 angeordnet ist. Diese Gewindespindel 9 ist mit einem Antrieb 11 verbunden. Diese Düse 6 steht ihrerseits über ein Ventil 24 mit einer Luftquelle 15 in Verbindung. Das Ventil 24 wird durch ein Betätigungselement 13 gesteuert.The nozzle 6 is fastened on a threaded nut 10 which is arranged on a threaded spindle 9. This threaded spindle 9 is connected to a drive 11. This nozzle 6 is in turn connected to an air source 15 via a valve 24. The valve 24 is controlled by an actuating element 13.

Oberhalb des Fadenwicklungskörpers 3 befindet sich eine an sich bekannte Saugglocke 19 mit einem ebenfalls an sich bekannten Fadenfühler 14. Der Fadenfühler 14, das Betätigungselement 13 sowie der Antrieb 11 für die Gewindespindel 9 sind jeweils über Leitungen 16, 17 und 18 mit einer Steuervorrichtung 12 verbunden. Hierbei kann die Steuervorrichtung 12 ihren Auslösebefehl über die Leitung 18 von dem Fadenfühler 14 der Saugglocke 19 erhalten, wobei diese Steuervorrichtung ihrerseits über die Leitungen 16 und 17 den Antrieb 11 der Gewindespindel 9 und die Betätigungsvorrichtung 13 für die Luftversorgung der Fadenend-Abblasdüse 6 steuert. Die Steuervorrichtung 12 steuert die Höhenstellung der Blasdüse 6 in Abhändigkeit der ihr von der Maschinensteuerung über den Eingang 25 aufgegebenen Höhenstellung der Ringbank 5 stets so, daß die Blasdüse 6 zu Beginn des Blasens dicht unter dem unter normalen Umständen dort befindlichen Windungskegel steht. Durch Betätigen des Ventils wird dann ein Blasluftstrahl B ausgelöst. Durch den Antrieb 11 und das Drehen der Gewindespindel 9 läßt sich die Düse 6 aus ihrer Ausgangslage absenken, bis der Fadenfühler 14 einen Faden fühlt. Alternativ besteht auch die nicht näher dargestellte Möglichkeit, daß ein schrittweises Absenken der Düse bis zum Erfassen des Fadens durchgeführt wird.Above the thread winding body 3 there is a suction bell 19 known per se with a thread sensor 14 also known per se. The thread sensor 14, the actuating element 13 and the drive 11 for the threaded spindle 9 are each connected to a control device 12 via lines 16, 17 and 18 . Here, the control device 12 can receive its trigger command via the line 18 from the thread sensor 14 of the suction cup 19, this control device in turn controlling the drive 11 of the threaded spindle 9 and the actuating device 13 for the air supply to the thread-end blow-off nozzle 6 via the lines 16 and 17. The control device 12 controls the height position of the blowing nozzle 6 in dependence on the height position of the ring bank 5 given to it by the machine control via the input 25 so that the blowing nozzle 6 is at the beginning of the blowing close to the winding cone located there under normal circumstances. A blast air jet B is then triggered by actuating the valve. By the drive 11 and the rotation of the threaded spindle 9, the nozzle 6 can be lowered from its starting position until the thread sensor 14 feels a thread. Alternatively, there is also the possibility, not shown in any more detail, that the nozzle is gradually lowered until the thread is gripped.

Bei der Ausführungsform der Erfindung nach Fig. 2 sind mehrere Düsen 6, 6′, 6˝ in unterschiedlichen Höhen angeordnet, wobei diese, von oben beginnend, nacheinander aktiviert werden können. Jede dieser Düsen 6, 6′, 6˝ ist mit einem entsprechenden Ventil und einer Betätigungsvorrichtung 13, 13′ und 13˝ verbunden, welche ihrerseits über Leitungen 17, 17′ und 17˝ mit einer Steuervorrichtung 12′ in Verbindung stehen. Wiederum ergibt sich eine wirkungsmäßige Verbindung über die Leitung 18 zwischen dem Fadenfühler 14 der Saugglocke 19 und der vorgenannten Steuervorrichtung 12′. Die drei, übereinander angeordneten Düsen 6, 6′, 6˝ sind mit einer Luftquelle 15 über entsprechende Leitungen verbunden.In the embodiment of the invention according to FIG. 2, a plurality of nozzles 6, 6 ', 6˝ are arranged at different heights, which can be activated one after the other, starting from the top. Each of these nozzles 6, 6 ', 6˝ is connected to a corresponding valve and an actuating device 13, 13' and 13˝, which in turn are connected via lines 17, 17 'and 17˝ to a control device 12'. In turn, there is an effective connection via the line 18 between the thread sensor 14 of the suction cup 19 and the aforementioned control device 12 '. The three, one above the other nozzles 6, 6 ', 6˝ are connected to an air source 15 via corresponding lines.

Die Düsen 6, 6′, 6˝ werden durch nicht näher dargestellte Einrichtungen der Bewegung der Ringbank 5 nachgeführt, so daß die oberste Düse 6 stets in der Position ist, in der sie den in seiner zu erwartenden Stellung liegenden Windungskegel 4 optimal beaufschlagen kann. Wenn hier in angemessener Zeit nach Einschalten des Blasstrahlers B aus der Düse 6 der Fadenfühler 14 keinen Faden fühlt, schließt die Steuervorrichtung 12′ die Düse 6 und öffnet die Düse 6′. Die Steuervorrichtung weist zu diesem Zweck ein Zeitmeßglied auf. Wenn der Fadenfühler 14 auch in angemessener Zeit nach Einschalten des Blasstrahlers B aus der Düse 6′ keinen Faden in dem an den Trichter 19 anschließenden Rohr fühlt, veranlaßt die Steuervorrichtung 12′ das Schließen der Düse 6′und das Öffnen der Düse 6˝. Wenn auch hier nach angemessener Zeit kein Faden gefühlt wird, ist davon auszugehen, daß das Fadenende nicht gefunden werden kann.The nozzles 6, 6 ', 6' are tracked by means not shown in detail of the movement of the ring rail 5, so that the uppermost nozzle 6 is always in the position in which it can optimally act on the winding cone 4 lying in its expected position. If here in a reasonable time after switching on the blast heater B from the nozzle 6 of the thread sensor 14 feels no thread, the control device 12 'closes the nozzle 6 and opens the nozzle 6'. For this purpose, the control device has a time measuring element. If the thread sensor 14 does not feel a thread in the tube adjoining the funnel 19 even in a reasonable time after switching on the blower B from the nozzle 6 ', the control device 12' causes the nozzle 6 'to close and the nozzle 6˝ to open. If here too no thread is felt after a reasonable time, it can be assumed that the end of the thread cannot be found.

Nach Fig. 3 besteht auch die Möglichkeit, daß eine sensorische Einrichtung 8 mit drei Sensoren 7, 7′ und 7˝ Anwendung findet. Diese sensorische Einrichtung 8 ist über eine Leitung 20 mit einer Steuervorrichtung 12˝ verbunden, welche ihrerseits, analog der Bauform nach Fig. 1, über die Leitung 16 mit dem Antrieb 11 für die Gewindespindel 9 und über die Leitung 17 mit dem Betätigungselement 13 zur Steuerung der Luft von der Luftquelle 15 in Verbindung steht. Die Sensoren 7, 7′ bzw. 7˝ erfassen die Lage des Windungskegels 4 und steuern entsprechend die Höhenposition der Düse 6, welche über den Antrieb 11 und die Gewindemutter 10 sowie die Gewindespindel 9 in ihrer Höhenlage veränderbar ist.3 there is also the possibility that a sensory device 8 with three sensors 7, 7 'and 7˝ is used. This sensory device 8 is connected via a line 20 to a control device 12 ', which in turn, analogously to the design according to FIG. 1, via line 16 with the drive 11 for the threaded spindle 9 and via line 17 with the actuating element 13 for control the air from the air source 15 communicates. The sensors 7, 7 'and 7˝ detect the position of the winding cone 4 and accordingly control the height position of the nozzle 6, which can be changed in its height position via the drive 11 and the threaded nut 10 and the threaded spindle 9.

Statt Einsatzes einer einzigen Fadenend-Abblasdüse 6 nach Fig. 3 besteht auch die Möglichkeit, daß die sensorische Einrichtung 8 über eine Steuervorrichtung 12˝ analog der Bauform nach Fig. 2 mit mehreren, übereinander angeordneten Düsen 6, 6′, 6˝ in Verbindung steht und im funktionsrichtigen Sinne diese entsprechend der Lage des Windungskegels 4 aktiviert.Instead of using a single thread-end blow-off nozzle 6 according to FIG. 3, there is also the possibility that the sensor device 8 is connected via a control device 12 'analogous to the design according to FIG. 2 with several nozzles 6, 6', 6 'arranged one above the other and activated in the functional sense according to the position of the winding cone 4.

Fig. 4 und 5 zeigen eine weitere Ausgestaltung der Erfindung. Da bekanntlich die Luftgeschwindigkeit und damit auch die Intensität von Blasstrahlen mit zunehmendem Abstand vom Düsenaustritt abnimmt und im vorliegenden Falle darüber hinaus die Blaswirkung durch den Spinnring 23, den der Blasstrahl durchdringen muß, gemindert wird, wird ein in einem Bereich weit unter dem Spinnring vom Windungskegel 4 abgelöstes Fadenende nicht immer sicher zur Saugglocke 19 transportiert. Um dies aber sicherzustellen, wird erfindungsgemäß oberhalb des Spinnringes 23 eine zusätzliche Blasdüse 22 angeordnet. Diese zusätzliche Düse 22 erfaßt ein durch eine der Düsen 6, 6′, 6˝ abgelöstes Fadenende und transportiert es weiter in den Wirkungsbereich der Saugglocke 19.4 and 5 show a further embodiment of the invention. Since, as is known, the air speed and thus also the intensity of blowing jets decrease with increasing distance from the nozzle outlet and, in the present case, the blowing action is also reduced by the spinning ring 23, which the blowing jet has to penetrate, one becomes in a region far below the spinning ring by the winding cone 4 Detached thread end is not always transported safely to suction cup 19. To ensure this, however, an additional blowing nozzle 22 is arranged according to the invention above the spinning ring 23. This additional nozzle 22 detects a thread end detached by one of the nozzles 6, 6 ', 6˝ and transports it further into the effective range of the suction bell 19th

Vorteilhafterweise werden durch diese zusätzliche Düse 22 Fadenschlingen, die sich bisweilen um den oberen Endbereich der Hülse 22 legen und ein Erfassen des Fadenendes verhindern, abgeblasen und in den Wirkungsbereich der Saugglocke 19 geführt.Advantageously, this additional nozzle 22 loops of thread, which sometimes wrap around the upper end region of the sleeve 22 and prevent the end of the thread from being gripped, are blown off and guided into the effective area of the suction bell 19.

Diese zusätzliche Düse 22 ist besonders wirkungsvoll, wenn die wirksame Blasdüse 6, 6′ oder 6˝ weit unter dem Spinnring steht und die Wirkung ihres Blasstrahles im Bereich des Spinnringes bereits erheblich nachgelassen hat. Sie ist jedoch auch unabhängig von der Anwendung höhenverstellbarer oder höhenversetzter Blasdüsen von Vorteil, wenn zwischen Windungskegel 4 und oberem Ende der Hülse 2 ein erheblicher Abstand besteht, wenn also der Windungskegel am Beginn des Abzuges noch im unteren Breich der Hülse liegt oder wenn sehr lange Hülsen verwendet werden. Es hat sich nämlich gezeigt, daß in diesem Falle abgelöste Fadenenden sich um den oberen Bereich der Hülse schlingen und nicht in die Saugdüse 19 gelangen.This additional nozzle 22 is particularly effective when the effective blowing nozzle 6, 6 'or 6' is far below the spinning ring and the effect of its blowing jet in the area of the spinning ring has already decreased considerably. However, it is also advantageous regardless of the use of height-adjustable or height-offset blowing nozzles if there is a considerable distance between the winding cone 4 and the upper end of the sleeve 2, that is to say if the winding cone is still in the lower region of the sleeve at the start of the withdrawal or if very long sleeves are used be used. It has been shown that in this case detached thread ends loop around the upper region of the sleeve and do not get into the suction nozzle 19.

Die Wirkung der zusätzlichen Düse 22 kann in weiterer Ausgestaltung der Erfindung durch ein Luftleitblech 21 unterstützt und verstärkt werden. Die zusätzliche Düse 22 kann gleichzeitig mit einer der Düsen 6, 6′, 6˝ oder zeitlich gestaffelt nach dieser betätigt werden. Ihr Blasstrahl ist ebenso wie der der Düsen 6, 6′, 6˝ in spitzem Winkel gegen die Achse der Hülse 2 gerichtet.The effect of the additional nozzle 22 can be supported and reinforced in a further embodiment of the invention by an air baffle 21. The additional nozzle 22 can be operated simultaneously with one of the nozzles 6, 6 ', 6˝ or staggered in time after this. Your blow jet is just like that of the nozzles 6, 6 ', 6˝ directed at an acute angle against the axis of the sleeve 2.

Claims (11)

  1. Process of pneumatically detaching a broken thread end from the winding cone of a thread winding body in the region of a ring rail of a spinning machine by means of at least one thread end blowing nozzle which can be activated as a function of the position of the winding cone, characterized in that the area of activity of the thread end blowing nozzle (6, 6', 6'') on the thread winding body (3), starting at the particular area of movement of the ring rail (5), is gradually displaced along the axis of the thread winding body over the area of winding of the thread winding body which the ring rail has left.
  2. Process according to claim 1, characterised in that the position of an individual nozzle (6) is varied with regard to its position relative to the winding cone (4) of the thread winding body (3). (Figs. 1 and 3).
  3. Process according to claim 2, characterised in that, when the ring rail (5) has advanced upwards, the nozzle (6) is lowered from its original position.
  4. Process according to claim 3, characterised in that the nozzle (6) is lowered step by step until the thread is picked up.
  5. Process according to claim 1, characterised in that, when a plurality of nozzles (6, 6', 6'') are arranged at different heights and when the ring rail (5) has advanced upwards, the nozzles are activated one after another, starting from the top (Fig. 6).
  6. Process according to claim 2 or 5, characterised in that sensor means (8) detect the position of the winding cone (4) of the thread winding bodies (3) and by means of these sensor means the position of an individual nozzle (6) is controlled or the successive activation of a plurality of nozzles (6, 6' 6'') is effected.
  7. Apparatus for carrying out the process according to claim 1, having a thread end blowing nozzle which can be moved along the axis of the thread winding member, characterised in that the area of travel of the displacing means (9; 10, 11) of the thread end blowing nozzle (6), starting at the particular area of movement of the ring rail (5), extends over the area of winding of the thread winding member (3) which the ring rail has left. (Figs. 1 and 3).
  8. Apparatus according to claim 7, characterised in that the drive (11) is connected to a control device (12) which is in turn connected to an actuating member (13) for the nozzle (6) and to a thread sensor (14) in the region of a known per se suction bell (19) (Fig. 1).
  9. Apparatus for carrying out the process according to claim 5, having a plurality of thread end blowing nozzles which can be activated selectively by means of a valve device, characterised in that the thread end blowing nozzles (6, 6', 6'') are arranged at a mutual spacing parallel to the longitudinal axis of the thread winding member (3) and can be successively activated by means of the valve device (13, 13', 13''), starting at the particular area of movement of the ring rail (5) in the winding area of the thread winding member which the ring rail (5) has left (Fig 2).
  10. Apparatus for carrying out the process according to claim 6, characterised in that the sensor means (8) comprise a plurality of sensors (7, 7', 7'') arranged one above the other and are connected to the or each nozzle (6, 6', 6'') via a control device (12'') (Fig. 3).
  11. Apparatus according to claim 7 or 9, characterised in that another thread end blowing nozzle (22), at an acute angle to the axis of the thread winding member 3, is directed on to the upper end area of the sleeve (2) carrying the thread winding member. (Figs. 4 and 5).
EP90117036A 1989-09-15 1990-09-05 Method and apparatus for pneumatically removing a broken yarn end from the winding of a yarn winding member Expired - Lifetime EP0417618B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3930935 1989-09-15
DE3930935A DE3930935A1 (en) 1989-09-15 1989-09-15 METHOD AND DEVICE FOR PNEUMATICALLY DETACHING A BROKEN THREAD END FROM THE WINDING CONE OF A THREAD WINDING BODY

Publications (3)

Publication Number Publication Date
EP0417618A2 EP0417618A2 (en) 1991-03-20
EP0417618A3 EP0417618A3 (en) 1991-07-17
EP0417618B1 true EP0417618B1 (en) 1994-06-22

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP90117036A Expired - Lifetime EP0417618B1 (en) 1989-09-15 1990-09-05 Method and apparatus for pneumatically removing a broken yarn end from the winding of a yarn winding member

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EP (1) EP0417618B1 (en)
JP (1) JPH03124826A (en)
DE (2) DE3930935A1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4131482A1 (en) * 1991-09-21 1993-03-25 Schlafhorst & Co W BLOW CHAMBER FOR A KOPS STANDING ON A SINGLE HEAD CARRIER IN THE UNWINDING POSITION OF A REEL POINT OF A WINDING MACHINE
DE4428245B4 (en) * 1994-08-10 2005-04-21 Saurer Gmbh & Co. Kg Apparatus for searching the thread end at the winding cone of copses
DE19501464C1 (en) * 1995-01-19 1996-05-23 Zinser Textilmaschinen Gmbh Appts. for automatic elimination of yarn breakages in ring spinning machines
CN104153071B (en) * 2014-08-25 2016-04-06 宜宾惠美精纺科技股份有限公司 The shaping intelligence control system of spun yarn
EP4249655A1 (en) * 2022-03-22 2023-09-27 Lakshmi Machine Works Ltd. An improved yarn lifting arrangement in automatic piecing unit of ring spinning machine

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2543767A1 (en) * 1975-10-01 1977-04-14 Zinser Textilmaschinen Gmbh PROCESS AND DEVICE FOR PNEUMATICALLY RELEASING AND SUCTIONING A BROKEN END OF THREAD
DE3012210A1 (en) * 1980-03-28 1981-10-08 Zinser Textilmaschinen Gmbh, 7333 Ebersbach Method of detaching broken thread ends from thread spool - using intermittent turning process together with axial blowing directed at thread
DE3314278A1 (en) * 1983-04-20 1984-10-25 Zinser Textilmaschinen Gmbh, 7333 Ebersbach THREADED BLOW-OFF NOZZLE
DE3316108A1 (en) * 1983-05-03 1984-11-08 Zinser Textilmaschinen Gmbh, 7333 Ebersbach BLOW-OFF NOZZLE
DE3600916C2 (en) * 1986-01-15 1996-04-25 Zinser Textilmaschinen Gmbh Service unit for a ring spinning machine
DE3726720A1 (en) * 1987-08-11 1989-02-23 Zinser Textilmaschinen Gmbh METHOD AND DEVICE FOR AUTOMATIC THREADING ON A RING SPINNING MACHINE
JP2541841B2 (en) * 1988-06-08 1996-10-09 村田機械株式会社 Thread end device

Also Published As

Publication number Publication date
EP0417618A3 (en) 1991-07-17
JPH03124826A (en) 1991-05-28
DE59006203D1 (en) 1994-07-28
EP0417618A2 (en) 1991-03-20
DE3930935A1 (en) 1991-03-28

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