EP0453622A1 - Method and apparatus for winding yarn on a bobbin - Google Patents
Method and apparatus for winding yarn on a bobbin Download PDFInfo
- Publication number
- EP0453622A1 EP0453622A1 EP90109240A EP90109240A EP0453622A1 EP 0453622 A1 EP0453622 A1 EP 0453622A1 EP 90109240 A EP90109240 A EP 90109240A EP 90109240 A EP90109240 A EP 90109240A EP 0453622 A1 EP0453622 A1 EP 0453622A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- thread guide
- electric motor
- point
- thread
- zero point
- 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.)
- Granted
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Classifications
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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
- B65H54/00—Winding, coiling, or depositing filamentary material
- B65H54/02—Winding and traversing material on to reels, bobbins, tubes, or like package cores or formers
- B65H54/28—Traversing devices; Package-shaping arrangements
- B65H54/2821—Traversing devices driven by belts or chains
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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
- B65H54/00—Winding, coiling, or depositing filamentary material
- B65H54/02—Winding and traversing material on to reels, bobbins, tubes, or like package cores or formers
- B65H54/28—Traversing devices; Package-shaping arrangements
- B65H54/2884—Microprocessor-controlled traversing devices in so far the control is not special to one of the traversing devices of groups B65H54/2803 - B65H54/325 or group B65H54/38
- B65H54/2887—Microprocessor-controlled traversing devices in so far the control is not special to one of the traversing devices of groups B65H54/2803 - B65H54/325 or group B65H54/38 detecting the position of the yarn guide
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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
- B65H54/00—Winding, coiling, or depositing filamentary material
- B65H54/02—Winding and traversing material on to reels, bobbins, tubes, or like package cores or formers
- B65H54/38—Arrangements for preventing ribbon winding ; Arrangements for preventing irregular edge forming, e.g. edge raising or yarn falling from the edge
- B65H54/385—Preventing edge raising, e.g. creeping arrangements
- B65H54/386—Preventing edge raising, e.g. creeping arrangements with energy storing means for recovering the kinetic energy at the end of the traversing stroke
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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
- 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 method for winding a thread on a bobbin according to the preamble of claim 1 and an apparatus for performing the method.
- a method of the generic type is known (EP 0 311 784 A1, embodiments according to FIGS. 15 ff), in which the electric motor used to drive the thread guide is switched off by means of a relay when the former approaches a reversal point and only after the direction of movement has passed mechanical means has been reversed is turned on again.
- the flexibility of the drive unit which is in principle present, is not used.
- the reversal points of the thread guide movement can only be varied by manually shifting the mechanical means causing the reversal of movement, which excludes lifting breathing.
- the mechanical means mentioned are rotatably suspended flywheels which absorb the kinetic energy of the drive unit and, after the thread guide has passed the reversal point, release it again.
- the energy transfer between the drive unit and the flywheel takes place through direct mechanical action, which begins with a grazing collision. That - apart from the fundamental undesirability - relatively massive moving parts - considerable forces act on parts, the mutual position of which must be precisely adjusted in the interest of a reasonably smooth energy transfer while avoiding collisions at unfavorable angles.
- the object of the invention is therefore to provide a generic method which offers full freedom with regard to the construction of the winding and an apparatus for carrying it out.
- the method should offer the possibility of producing windings according to any winding laws, such as wild windings, precision windings, step-precision windings, wild windings with image disturbance, windings with stroke breathing, conical windings etc., without any intervention in the mechanical part of the winding device, and thread reserves or lower thirds should also be created can be.
- the invention as characterized in the claims, achieves flexibility in the manufacture of windings, which is practically only limited by the imagination of the user. Therefore, common types of windings can of course be provided from the start as permanently installed programs that can be called by the user, possibly with the addition of certain parameters.
- a bobbin 1, on which a thread is wound, is rotatably suspended about its axis and is driven by a drive roller 2, by which it is contacted along a surface line.
- the thread which is wound on the bobbin 1 is guided by a thread guide 3 which, in the normal case, executes an oscillation parallel to the bobbin axis at least over a partial area of a traversing interval indicated by an arrow 4, usually about a zero point which denotes the center of the same.
- the thread guide 3 is fastened on a thread guide carrier 5, which is guided in a T-shaped groove 6.
- the movement of the thread guide 3 is brought about by a drive unit which comprises a string 7 to which the thread guide carrier 5 is fastened and which runs over deflection rollers 8a, b and a drive wheel 9 of an electric stepping motor 10.
- a drive unit which comprises a string 7 to which the thread guide carrier 5 is fastened and which runs over deflection rollers 8a, b and a drive wheel 9 of an electric stepping motor 10.
- stepper motor 10 instead of the stepper motor 10, depending on the given requirements, other types of electric motors can also be used, in particular disc-type motors with electronic commutation.
- the stepper motor 10 is controlled by a programmable controller, which in the present case comprises a local control unit 11, which in turn is directed via data lines 12, 13 by a machine control center 14, to which several winding devices of the type described can be connected.
- the control unit 11 is supplied with the speeds of the coil 1 and the drive roller 2, which are monitored by a tachometer, from which the instantaneous coil diameter, which must be taken into account for certain types of windings, can easily be determined.
- a sensor 15 which detects the passage of the thread guide 3 through a reference position, which coincides with the zero point in the middle of the traversing interval, is also connected to the control unit 11.
- the basic programs for conventional windings or winding sections are stored in the control unit 11 and can be called up by the machine center 14 via the data lines 12 and 13.
- Parameters such as the basic stroke and the basic stroke variation for producing soft coil edges in certain winding types can be transmitted to the control unit 11.
- the control unit 11 calculates the paths, speeds and accelerations for the motor movement based on the particular application upcoming winding laws.
- this information is converted into pulses at specific time intervals and passed on to the power output stage that controls the motor. With a constant thread guide movement, these time intervals are constant, while they lengthen or shorten accordingly with deceleration and acceleration.
- logic signals for controlling the direction of rotation and the current level are also generated in the control unit 11 and fed to the motor via the output stage. The timing of the control is organized in the shortest possible successive time segments, the impulses controlling the movements of the current segment being emitted and the measurements and calculations being carried out for the following segment.
- a sequence of control signals can guide the thread guide from the zero point to one of the reversal points of its oscillating movement, from there to the opposite reversal point and back to the zero point. This allows you to control the execution of the program and to prevent errors that may have occurred. B. by additional steps if the zero point at the end of a Control sequence has not yet been reached, or vice versa, by prematurely aborting the control sequence, if it was reached prematurely, or to indicate it if it cannot be corrected.
- the device described in connection with FIG. 1 is sufficient, for example, when using suitable stepper motors available today for the production of parallel windings on flange coils or cross windings in slow winding processes such as occur in twisting, open-end or air spinning machines.
- the usually very abrupt reversal of the direction of movement at the reversal points requires the inertia of the moving parts of the drive unit - here the thread guide 3, the thread guide carrier 5, the string 7, the deflection rollers 8a, b, the drive wheel 9 and the Stepper motor rotor 10 - must be overcome, additional measures. As shown in FIG.
- the drive wheel 9 is non-positively connected to the head ends of two torsion bars 18a, b via gear wheels 16, 17a, b, the opposite ends of which are fixed.
- Each of the torsion bars 18a, b has a sleeve 19a, b at some distance from its head end, which together with a part fastened to a magnetic coil 20a, b forms a spur tooth coupling.
- Each of the solenoids 20a, b can be actuated by the control unit 11 and causes the corresponding coupling to close and thus to shorten the effective length of the corresponding torsion bar 18a, b.
- 3a shows the restoring forces of the two torsion bars 18a, b as a function of the position of the thread guide 3 in the traversing interval, the dashed line denoted by a that of the torsion bar 18a, that denoted by b that of the torsion bar 18b and the solid line the sum of the two, ie represent the restoring force of the spring element formed by the two torsion bars 18a, b.
- the equilibrium position of the latter lies in the middle of the traversing interval and coincides with the zero point.
- the stepper motor 10 must apply an additional force which is opposite to the restoring force of the spring element and corresponds to the amount in order to tension the spring element.
- the restoring force increases linearly with a given spring constant until the thread guide 3 reaches a switchover point at which the magnetic coil 20b is activated and its spring constant is increased by shortening the effective length of the torsion bar 18b.
- the current supply to the stepping motor 10 is increased to approximately three times the nominal current In, which corresponds approximately to the saturation current.
- the frequency of the control pulses directed to the stepping motor 10 is continuously reduced in such a way that its rotor experiences a constant deceleration and the thread guide 3 comes to a standstill at the reversal point.
- the rotor and thus the thread guide 3 are immediately accelerated in the opposite direction.
- the thread guide 3 is decelerated and accelerated very quickly in the area of the reversal point.
- the solenoid 20b is deactivated and the clutch is released.
- the power supply to the stepper motor 10 is throttled.
- the process just described is repeated, with the torsion bars 18a, b etc. exchanging the rollers.
- the stepper motor 10 is operated in the remaining area with a current lying below the nominal current In.
- the two torsion bars 18a, b always act in opposite directions, with the torsion bar 18a being twisted more to the left of the zero point in a thread guide position, as a result of which its restoring force outweighs the torsion bar 18b to the right of the zero point.
- Each of the two torsion bars 18a, b maintains a deflection - based on its equilibrium position - which does not fall below a positive minimum value. In other words, each of the two torsion bars 18a, b always remains twisted during the oscillating movement of the thread guide 3 and does not reach its equilibrium position. As a result, load changes which would result in an abrupt gripping of the gear 16 with the gear 17a or 17b are avoided and there are no dangerous shock loads on the drive unit, the spring element and the two connecting gears 16, 17a, b even at high traversing speeds.
Abstract
Description
Die Erfindung bezieht sich auf ein Verfahren zum Aufwickeln eines Fadens auf eine Spule gemäss dem Oberbegriff des Anspruchs 1 sowie eine Vorrichtung zur Durchführung des Verfahrens.The invention relates to a method for winding a thread on a bobbin according to the preamble of claim 1 and an apparatus for performing the method.
Es ist ein gattungsgemässes Verfahren bekannt (EP 0 311 784 A1, Ausführungen gemäss Fig. 15 ff), bei welchem der zum Antrieb des Fadenführers dienende Elektromotor, wenn sich der erstere einem Umkehrpunkt nähert, mittels eines Relais ausgeschaltet und erst, nachdem die Bewegungsrichtung durch mechanische Mittel umgekehrt worden ist, wieder eingeschaltet wird. Bei dieser Verfahrensweise wird die prinzipiell vorhandene Flexibilität der Antriebseinheit nicht ausgenützt. Insbesondere können die Umkehrpunkte der Fadenführerbewegung nur durch manuelles Verschieben der die Bewegungsumkehr bewirkenden mechanischen Mittel variiert werden, was Hubatmung ausschliesst.A method of the generic type is known (EP 0 311 784 A1, embodiments according to FIGS. 15 ff), in which the electric motor used to drive the thread guide is switched off by means of a relay when the former approaches a reversal point and only after the direction of movement has passed mechanical means has been reversed is turned on again. In this procedure, the flexibility of the drive unit, which is in principle present, is not used. In particular, the reversal points of the thread guide movement can only be varied by manually shifting the mechanical means causing the reversal of movement, which excludes lifting breathing.
Die angesprochenen mechanischen Mittel sind drehbar aufgehängte Schwungmassen, welche die kinetische Energie der Antriebseinheit aufnehmen und, nachdem der Fadenführer den Umkehrpunkt durchlaufen hat, wieder an dieselbe abgeben. Die Energieübertragung zwischen der Antriebseinheit und der Schwungmasse erfolgt dabei durch unmittelbare mechanische Einwirkung, die mit einer streifenden Kollision beginnt. Dass dabei - abgesehen von der prinzipiellen Unerwünschtheit relativ massereicher beweglicher Teile - beträchtliche Kräfte auf Teile wirken, deren gegenseitige Lage im Interesse einer einigermassen glatten Energieübertragung unter Vermeidung von Kollisionen unter ungünstigen Winkeln genau eingestellt sein muss, lässt eine geringe Lebensdauer der Vorrichtung befürchten.The mechanical means mentioned are rotatably suspended flywheels which absorb the kinetic energy of the drive unit and, after the thread guide has passed the reversal point, release it again. The energy transfer between the drive unit and the flywheel takes place through direct mechanical action, which begins with a grazing collision. That - apart from the fundamental undesirability - relatively massive moving parts - considerable forces act on parts, the mutual position of which must be precisely adjusted in the interest of a reasonably smooth energy transfer while avoiding collisions at unfavorable angles.
Aufgabe der Erfindung ist es daher, ein gattungsgemässes Verfahren zu schaffen, das bezüglich des Aufbaus der Wicklung volle Freiheit bietet sowie eine Vorrichtung zu seiner Durchführung. Das Verfahren soll insbesondere die Möglichkeit bieten, ohne irgendwelche Eingriffe in den mechanischen Teil der Spulvorrichtung Wicklungen nach beliebigen Wickelgesetzen herzustellen wie wilde Wicklungen, Präzisionswicklungen, Stufenpräzisionswicklungen, wilde Wicklungen mit Bildstörung, Wicklungen mit Hubatmung, konische Wicklungen etc., ausserdem sollen Fadenreserven oder Bauchbinden angelegt werden können.The object of the invention is therefore to provide a generic method which offers full freedom with regard to the construction of the winding and an apparatus for carrying it out. In particular, the method should offer the possibility of producing windings according to any winding laws, such as wild windings, precision windings, step-precision windings, wild windings with image disturbance, windings with stroke breathing, conical windings etc., without any intervention in the mechanical part of the winding device, and thread reserves or lower thirds should also be created can be.
Durch die Erfindung, wie sie in den Ansprüchen gekennzeichnet ist, wird eine Flexibilität in der Herstellung von Wicklungen erreicht, die praktisch nur durch die Phantasie des Benutzers beschränkt ist. Gängige Wicklungsarten können deswegen natürlich von vornherein als fest eingebaute, eventuell unter Ergänzung bestimmter Parameter durch den Benutzer aufrufbare Programme vorgesehen werden.The invention, as characterized in the claims, achieves flexibility in the manufacture of windings, which is practically only limited by the imagination of the user. Therefore, common types of windings can of course be provided from the start as permanently installed programs that can be called by the user, possibly with the addition of certain parameters.
Im folgenden wird die Erfindung anhand von lediglich Ausführungswege darstellenden Zeichenungen erläutert. Es zeigen
- Fig. 1
- eine teilweise schematische Darstellung einer erfindungsgemässen Vorrichtung zur Durchführung des erfindungsgemässen Verfahrens,
- Fig. 2
- einen Teil der Vorrichtung nach Fig. 1, der dort z. T. nicht sichtbar ist,
- Fig. 3a
- Kräfteverläufe in Abhängigkeit von der Position des Fadenführers bei der Vorrichtung gemäss Fig. 1, 2 und
- Fig. 3b
- den Betrag der Stromstärke in Abhängigkeit von der Position des Rotors des Elektromotors bei der Vorrichtung gemäss Fig. 1, 2, wobei untereinanderliegende Rotorpositionen und Fadenführerpositionen (Fig. 3a) einander entsprechen.
- Fig. 1
- FIG. 2 shows a partially schematic representation of a device according to the invention for carrying out the method according to the invention,
- Fig. 2
- a part of the device of FIG. 1, which there z. T. is not visible,
- Fig. 3a
- Force curves as a function of the position of the thread guide in the device according to FIGS. 1, 2 and
- Fig. 3b
- the amount of the current intensity as a function of the position of the rotor of the electric motor in the device according to FIGS. 1, 2, rotor positions and thread guide positions (FIG. 3a) lying one below the other corresponding to one another.
Eine Spule 1, auf die ein Faden gewickelt wird, ist um ihre Achse drehbar aufgehängt und wird über eine Treibwalze 2, von der sie längs einer Mantellinie kontaktiert wird, angetrieben. Der Faden, der auf die Spule 1 gewickelt wird, wird von einem Fadenführer 3 geführt, der im Normalfall eine mindestens über einen Teilbereich eines durch einen Pfeil 4 angedeuteten Changierintervalls meist um einen die Mitte desselben bezeichnenden Nullpunkt oszillierende Bewegung parallel zur Spulenachse ausführt. Der Fadenführer 3 ist auf einem Fadenführerträger 5 befestigt, der in einer T-förmigen Nut 6 geführt wird. Die Bewegung des Fadenführers 3 wird von einer Antriebseinheit bewirkt, die eine Saite 7 umfasst, an der der Fadenführerträger 5 befestigt ist und die über Umlenkrollen 8a,b und ein Treibrad 9 eines elektrischen Schrittmotors 10 läuft. Statt des Schrittmotors 10 können auch, je nach den gegebenen Anforderungen, andere Typen von Elektromotoren eingesetzt werden, insbesondere Scheibenläufermotoren mit elektronischer Kommutierung.A bobbin 1, on which a thread is wound, is rotatably suspended about its axis and is driven by a
Erfindungsgemäss wird der Schrittmotor 10 von einer programmierbaren Steuerung gesteuert, welche im vorliegend beschriebenen Fall eine lokale Steuereinheit 11 umfasst, die ihrerseits über Datenleitungen 12, 13 von einer Maschinenzentrale 14 dirigiert wird, der mehrere Spulvorrichtungen der beschriebenen Art angeschlossen sein können. Der Steuereinheit 11 werden die Drehzahlen der Spule 1 und der Treibwalze 2, die durch Drehzahlmesser überwacht werden, zugeleitet, aus denen sich leicht der momentane Spulendurchmesser ermitteln lässt, der bei bestimmten Wicklungstypen berücksichtigt werden muss. Ausserdem ist ein Sensor 15, der den Durchgang des Fadenführers 3 durch eine Referenzposition, die mit dem Nullpunkt in der Mitte des Changierintervalls zusammenfällt, feststellt, ebenfalls mit der Steuereinheit 11 verbunden.According to the invention, the
Die Grundprogramme für übliche Wicklungen oder Wicklungsabschnitte (wilde Wicklung, Präzisionswicklung, konische Wicklungen mit entsprechenden Geschwindigkeitsprofilen, d. h. Funktionen, die die Geschwindigkeit des Fadenführers in Abhängigkeit von seiner Position festlegen, Fadenreserve, Bauchbinde, Endwindungen irgendwelcher Form etwa im Bereich des der Fadenreserve gegenüberliegenden Endes der Hülse, Einlegen des Fadens in eine ausserhalb des Changierintervalls liegende Schere nach Beendigung des Wickelvorgangs etc.) sind in der Steuereinheit 11 gespeichert und können von der Maschinenzentrale 14 über die Datenleitungen 12 und 13 aufgerufen werden. Parameter wie etwa bei bestimmten Wicklungstypen der Grundhub und die Grundhubvariation zur Erzeugung weicher Spulenkanten können an die Steuereinheit 11 übermittelt werden. In der Steuereinheit 11 erfolgt die Berechnung der Wege, Geschwindigkeiten und Beschleunigungen für die Motorbewegung aufgrund der jeweils zur Anwendung kommenden Wickelgesetze. Bei einem Schrittmotor wird diese Information in Impulse mit bestimmten Zeitabständen umgesetzt und an die den Motor ansteuernde Leistungsendstufe weitergegeben. Bei konstanter Fadenführerbewegung sind diese Zeitabstände konstant, während sie sich bei Verzögerung und Beschleunigung entsprechend verlängern bzw. verkürzen. Ausser den Schrittimpulsen werden in der Steuereinheit 11 auch noch logische Signale zur Steuerung der Drehrichtung und des Strompegels erzeugt und über die Endstufe dem Motor zugeführt. Der zeitliche Ablauf der Steuerung ist in möglichst kurzen aufeinanderfolgenden Zeitabschnitten organisiert, wobei jeweils zugleich die die Bewegungen des laufenden Abschnitts steuernden Impulse abgegeben und die Messungen und Berechnungen für den folgenden Abschnitt durchgeführt werden.The basic programs for conventional windings or winding sections (wild winding, precision winding, conical windings with corresponding speed profiles, i.e. functions that determine the speed of the thread guide depending on its position, thread reserve, lower third, end turns of any shape, for example, in the area of the end opposite the thread reserve Sleeve, insertion of the thread into a pair of scissors lying outside the traversing interval after completion of the winding process etc.) are stored in the
Es ist natürlich möglich, über die Grundprogramme hinaus weitere Programme von der Maschinenzentrale 14 auf die Steuereinheit 11 zu übertragen, sodass nachträgliche Erweiterungen des Repertoires stets möglich bleiben.It is of course possible to transfer further programs from the
Es ist im allgemeinen vorteilhaft, die Steuerung des Wickelvorgangs so zu organisieren, dass Durchgänge des Fadenführers 3 durch den Nullpunkt - durch den Sensor 15 festgestellt und von der Steuereinheit 11 registriert - Sequenzen von Steuersignalen auslösen, nach deren fehlerfreier Ausführung die Fadenführerposition jeweils wieder den Nullpunkt erreicht, insbesondere kann eine Sequenz von Steuersignalen den Fadenführer vom Nullpunkt zu einem der Umkehrpunkte seiner oszillierenden Bewegung, von dort zum gegenüberliegenden Umkehrpunkt und zurück zum Nullpunkt führen. Das erlaubt, die Programmausführung zu kontrollieren und aufgetretene Fehler z. B. durch zusätzliche Schritte, wenn der Nullpunkt am Ende einer Steuersequenz noch nicht erreicht ist oder umgekehrt durch vorzeitigen Abbruch der Steuersequenz, falls er vorzeitig erreicht wurde, zu korrigieren oder, wenn sie nicht korrigierbar sind, anzuzeigen.It is generally advantageous to organize the control of the winding process so that passes of the
Die im Zusammenhang mit Fig. 1 beschriebene Vorrichtung genügt etwa bei Verwendung geeigneter heute erhältlicher Schrittmotoren für die Herstellung von Parallelwicklungen auf Flanschspulen oder Kreuzwicklungen bei langsamen Spulvorgängen wie sie etwa bei Zwirn-, Offenend- oder Luftspinnmaschinen auftreten. Bei höheren Changiergeschwindigkeiten erfordert jedoch die meist sehr abrupte Umkehr der Bewegungsrichtung an den Umkehrpunkten, bei der die Massenträgheit der beweglichen Teile der Antriebseinheit - hier des Fadenführers 3, des Fadenführerträgers 5, der Saite 7, der Umlenkrollen 8a,b, des Treibrads 9 und des Rotors des Schrittmotors 10 - überwunden werden muss, zusätzliche Massnahmen. Wie in Fig. 2 dargestellt, ist das Treibrad 9 über Zahnräder 16, 17a,b mit den Kopfenden zweier Torsionsstäbe 18a,b kraftschlüssig verbunden, deren gegenüberliegende Enden fixiert sind. Jeder der Torsionsstäbe 18a,b weist jeweils in einiger Entfernung von seinem Kopfende eine Manschette 19a,b auf, welche zusammen mit einem an einer Magnetspule 20a,b befestigten Teil eine Stirnzahnkupplung bildet. Jede der Magnetspulen 20a,b kann durch die Steuereinheit 11 betätigt werden und bewirkt das Schliessen der entsprechenden Kupplung und damit eine Verkürzung der wirksamen Länge des entsprechenden Torsionsstabs 18a,b.The device described in connection with FIG. 1 is sufficient, for example, when using suitable stepper motors available today for the production of parallel windings on flange coils or cross windings in slow winding processes such as occur in twisting, open-end or air spinning machines. At higher traversing speeds, however, the usually very abrupt reversal of the direction of movement at the reversal points requires the inertia of the moving parts of the drive unit - here the
Fig. 3a zeigt die Rückstellkräfte der beiden Torsionsstäbe 18a,b als Funktion der Position des Fadenführers 3 im Changierintervall, wobei die mit a bezeichnete gestrichelte Linie die des Torsionsstabs 18a, die mit b bezeichnete die des Torsionsstabs 18b und die durchgezogene Linie die Summe der beiden, d. h. die Rückstellkraft des von beiden Torsionsstäben 18a,b gebildeten Federelements darstellen. Die Gleichgewichtsposition des letzteren liegt in der Mitte des Changierintervalls und deckt sich mit dem Nullpunkt.3a shows the restoring forces of the two
Bewegt sich nun der Fadenführer 3 ausgehend vom Nullpunkt nach rechts, so muss der Schrittmotor 10 eine Zusatzkraft, die der Rückstellkraft des Federelements entgegengesetzt ist und ihr dem Betrag nach entspricht, aufbringen, um das Federelement zu spannen. Die Rückstellkraft steigt linear mit einer gegebenen Federkonstante, bis der Fadenführer 3 einen Umschaltpunkt erreicht, an dem die Magnetspule 20b aktiviert und durch Verkürzung der wirksamen Länge des Torsionsstabs 18b dessen Federkonstante erhöht wird. Zugleich wird, wie in Fig. 3b dargestellt, die Stromzufuhr an den Schrittmotor 10 auf etwa das Dreifache des Nennstroms In, was ungefähr dem Sättigungsstrom entspricht, erhöht. Im weiteren wird die Frequenz der an den Schrittmotor 10 geleiteten Ansteuerimpulse kontinuierlich so verkleinert, dass sein Rotor eine konstante Verzögerung erfährt und der Fadenführer 3 im Umkehrpunkt zum Stillstand kommt. Durch Umkehrung der Reihenfolge in der Bestromung der Phasen des Schrittmotors erfolgt unmittelbar anschliessend eine Beschleunigung des Rotors und damit des Fadenführers 3 in Gegenrichtung. Durch die Erhöhung des Stromes und damit des Motordrehmoments sowie die Wirkung des Federelments erfolgen Verzögerung und Beschleunigung des Fadenführers 3 im Bereich des Umkehrpunktes sehr rasch. Wenn die Rückbewegung den Umschaltpunkt wieder erreicht, wird die Magnetspule 20b deaktiviert und die Kupplung gelöst. Zugleich wird die Stromzufuhr an den Schrittmotor 10 gedrosselt. Nach Durchgang durch den Nullpunkt wiederholt sich der eben beschriebene Vorgang, wobei die Torsionsstäbe 18a,b etc. die Rollen tauschen. Zum Ausgleich für die kurzzeitig hohe Belastung im Bereich der Umkehrpunkte wird der Schrittmotor 10 im übrigen Bereich mit einem unterhalb des Nennstroms In liegenden Strom betrieben.If the
Wie aus Fig. 3a ersichtlich ist, wirken die beiden Torsionsstäbe 18a,b stets gegensinnig, wobei bei einer Fadenführerposition links vom Nullpunkt der Torsionsstab 18a stärker tordiert ist, wodurch seine Rückstellkraft überwiegt, rechts vom Nullpunkt dagegen der Torsionsstab 18b. Jeder der beiden Torsionsstäbe 18a,b behält, solange sich der Fadenführer 3 innerhalb des Changierintervalls befindet, eine Auslenkung - bezogen auf seine Gleichgewichtsposition -, die einen positiven Mindestwert nicht unterschreitet. Mit anderen Worten, jeder der beiden Torsionsstäbe 18a,b bleibt während der oszillierenden Bewegung des Fadenführers 3 stets tordiert und erreicht seine Gleichgewichtsposition nicht. Dadurch werden Lastwechsel, die ein abruptes Greifen des Zahnrads 16 mit dem Zahnrad 17a bzw. 17b zur Folge hätten, vermieden und es treten auch bei hohen Changiergeschwindigkeiten keine gefährlichen Stossbelastungen der Antriebseinheit, des Federelements und der beide verbindenden Zahnräder 16, 17a,b auf.As can be seen from FIG. 3a, the two
Claims (19)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE59008484T DE59008484D1 (en) | 1990-04-23 | 1990-04-23 | Method and device for winding a thread on a spool. |
EP19900109240 EP0453622B1 (en) | 1990-04-23 | 1990-04-23 | Method and apparatus for winding yarn on a bobbin |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP19900109240 EP0453622B1 (en) | 1990-04-23 | 1990-04-23 | Method and apparatus for winding yarn on a bobbin |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0453622A1 true EP0453622A1 (en) | 1991-10-30 |
EP0453622B1 EP0453622B1 (en) | 1995-02-15 |
Family
ID=8203985
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19900109240 Expired - Lifetime EP0453622B1 (en) | 1990-04-23 | 1990-04-23 | Method and apparatus for winding yarn on a bobbin |
Country Status (2)
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EP (1) | EP0453622B1 (en) |
DE (1) | DE59008484D1 (en) |
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DE29616651U1 (en) * | 1996-09-25 | 1998-01-29 | C & L Textilmaschinen Gmbh | Winding machine |
EP0829444A1 (en) * | 1996-09-16 | 1998-03-18 | Ssm Schärer Schweiter Mettler Ag | Apparatus for winding yarn on a bobbin |
EP0829443A1 (en) * | 1996-09-16 | 1998-03-18 | Ssm Schärer Schweiter Mettler Ag | Apparatus for winding yarn on a bobbin |
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DE19722769A1 (en) * | 1997-06-02 | 1998-12-03 | Csm Gmbh | Lap roll winder |
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EP0950631A1 (en) * | 1998-02-14 | 1999-10-20 | Volkmann GmbH & Co. | Method and device for winding conical bobbins |
US6065712A (en) * | 1997-02-27 | 2000-05-23 | Barmag Ag | Method and apparatus for winding a yarn into a package |
EP1004532A1 (en) * | 1998-11-23 | 2000-05-31 | Schärer Schweiter Mettler AG | Energy storage for a yarn take-up device |
WO2000037345A1 (en) * | 1998-12-18 | 2000-06-29 | W. Schlafhorst Ag & Co. | Thread guide for traversing a thread in a rotating winding bobbin |
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EP1044917A1 (en) * | 1999-04-14 | 2000-10-18 | Ssm Schärer Schweiter Mettler Ag | Device for winding a thread on a spool |
EP1048601A1 (en) * | 1999-04-30 | 2000-11-02 | Schärer Schweiter Mettler AG | Yarn winder |
EP1057765A2 (en) * | 1999-05-31 | 2000-12-06 | SP.EL. S.r.L. | Method and apparatus for controlling the winding of threads and the like onto rotating supports such as reels of yarn and the like |
EP1070676A1 (en) | 1999-07-17 | 2001-01-24 | Schärer Schweiter Mettler AG | Method and apparatus for winding a yarn on a bobbin |
WO2001028907A2 (en) * | 1999-10-19 | 2001-04-26 | Maschinenfabrik Rieter Ag | Method and device for winding a thread onto a bobbin |
DE19963232A1 (en) * | 1999-12-27 | 2001-07-05 | Volkmann Gmbh | Device for winding a thread on a spool |
EP1125877A1 (en) * | 2000-02-17 | 2001-08-22 | Schärer Schweiter Mettler AG | Winding head and its use |
US6505791B1 (en) | 1998-06-12 | 2003-01-14 | Maschinenfabrik Rieter Ag | Thread traversing device |
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EP1880964A2 (en) | 2006-07-12 | 2008-01-23 | SAVIO MACCHINE TESSILI S.p.A. | High-frequency thread-guide device for the production of bobbins with modulated traversing |
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EP1600414A3 (en) * | 2004-05-25 | 2009-04-15 | Oerlikon Textile GmbH & Co. KG | Method and apparatus for operating a winding machine producing crosswound bobbins |
DE102008017302A1 (en) * | 2008-03-31 | 2009-10-01 | Wilhelm Stahlecker Gmbh | Device for changing thread in cross-wound spool at textile machine, has traction body attached to ring-shaped stator consisting of electromagnets so that stator along with traction body form linear actuator |
DE102009017857A1 (en) | 2009-04-17 | 2010-10-21 | Oerlikon Textile Gmbh & Co. Kg | Thread cross-winding device for producing cross-wound bobbin, is supported in winding device of textile machine manufacturing cross-wound bobbin in winding frame of winding device of cross-coil manufacturing textile machine pivoted |
DE19835888B4 (en) * | 1998-02-19 | 2011-06-16 | Oerlikon Textile Gmbh & Co. Kg | Method for winding a thread |
WO2013164190A1 (en) * | 2012-05-04 | 2013-11-07 | SSM Schärer Schweiter Mettler AG | Thread guide unit and spooling device |
EP2740699A3 (en) * | 2012-12-07 | 2015-01-21 | Saurer Germany GmbH & Co. KG | Spooling device for a workstation of a textile machine for creating cross-wound spools |
CN104328545A (en) * | 2014-11-09 | 2015-02-04 | 经纬纺织机械股份有限公司 | Yarn guide device for rotor spinning machine |
EP2765102A3 (en) * | 2013-02-07 | 2017-12-20 | Rieter CZ s.r.o. | Method for distributing wound yarn and device for carrying it out |
EP3281902A1 (en) | 2016-08-09 | 2018-02-14 | Georg Sahm GmbH & Co. KG | Coil, winding machine, method for winding a coil and software product |
WO2019228891A1 (en) | 2018-05-30 | 2019-12-05 | Ssm Giudici S.R.L. | Device and method for producing fancy yarns |
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EP0829444A1 (en) * | 1996-09-16 | 1998-03-18 | Ssm Schärer Schweiter Mettler Ag | Apparatus for winding yarn on a bobbin |
EP0829443A1 (en) * | 1996-09-16 | 1998-03-18 | Ssm Schärer Schweiter Mettler Ag | Apparatus for winding yarn on a bobbin |
US5918829A (en) * | 1996-09-16 | 1999-07-06 | Scharer Schweiter Mettler Ag | Apparatus for winding a thread onto a bobbin |
DE29616651U1 (en) * | 1996-09-25 | 1998-01-29 | C & L Textilmaschinen Gmbh | Winding machine |
US6065712A (en) * | 1997-02-27 | 2000-05-23 | Barmag Ag | Method and apparatus for winding a yarn into a package |
US6186435B1 (en) | 1997-02-27 | 2001-02-13 | Barmag Ag | Method and apparatus for winding a yarn into a package |
DE19807030B4 (en) * | 1997-02-27 | 2010-04-15 | Oerlikon Textile Gmbh & Co. Kg | Method for winding a thread into a coil |
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WO1998042606A1 (en) * | 1997-03-20 | 1998-10-01 | Barmag Ag | Method for controlling a crosswinding device |
DE19722769A1 (en) * | 1997-06-02 | 1998-12-03 | Csm Gmbh | Lap roll winder |
WO1999005055A1 (en) * | 1997-07-26 | 1999-02-04 | Barmag Ag | Process and cross-winding device for laying a thread |
US6405966B1 (en) | 1997-07-26 | 2002-06-18 | Barmag Ag | Process and cross-winding device for laying a thread |
EP0950631A1 (en) * | 1998-02-14 | 1999-10-20 | Volkmann GmbH & Co. | Method and device for winding conical bobbins |
DE19835888B4 (en) * | 1998-02-19 | 2011-06-16 | Oerlikon Textile Gmbh & Co. Kg | Method for winding a thread |
US6308907B1 (en) | 1998-03-20 | 2001-10-30 | Barmag Ag | Method for winding up a thread |
WO1999048786A1 (en) * | 1998-03-20 | 1999-09-30 | Barmag Ag | Method for winding up a thread |
EP0949179A1 (en) * | 1998-04-11 | 1999-10-13 | Ssm Schärer Schweiter Mettler Ag | Power supply for the winding units of a windig machine |
US6505791B1 (en) | 1998-06-12 | 2003-01-14 | Maschinenfabrik Rieter Ag | Thread traversing device |
EP1004532A1 (en) * | 1998-11-23 | 2000-05-31 | Schärer Schweiter Mettler AG | Energy storage for a yarn take-up device |
WO2000037345A1 (en) * | 1998-12-18 | 2000-06-29 | W. Schlafhorst Ag & Co. | Thread guide for traversing a thread in a rotating winding bobbin |
WO2000055082A1 (en) * | 1999-03-15 | 2000-09-21 | Muennekehoff Gerd | Traversing device and method |
EP1044917A1 (en) * | 1999-04-14 | 2000-10-18 | Ssm Schärer Schweiter Mettler Ag | Device for winding a thread on a spool |
EP1048601A1 (en) * | 1999-04-30 | 2000-11-02 | Schärer Schweiter Mettler AG | Yarn winder |
EP1057765A2 (en) * | 1999-05-31 | 2000-12-06 | SP.EL. S.r.L. | Method and apparatus for controlling the winding of threads and the like onto rotating supports such as reels of yarn and the like |
EP1057765A3 (en) * | 1999-05-31 | 2001-05-30 | SP.EL. S.r.L. | Method and apparatus for controlling the winding of threads and the like onto rotating supports such as reels of yarn and the like |
EP1070676A1 (en) | 1999-07-17 | 2001-01-24 | Schärer Schweiter Mettler AG | Method and apparatus for winding a yarn on a bobbin |
WO2001028907A3 (en) * | 1999-10-19 | 2001-11-22 | Rieter Ag Maschf | Method and device for winding a thread onto a bobbin |
WO2001028907A2 (en) * | 1999-10-19 | 2001-04-26 | Maschinenfabrik Rieter Ag | Method and device for winding a thread onto a bobbin |
DE19963232A1 (en) * | 1999-12-27 | 2001-07-05 | Volkmann Gmbh | Device for winding a thread on a spool |
EP1125877A1 (en) * | 2000-02-17 | 2001-08-22 | Schärer Schweiter Mettler AG | Winding head and its use |
EP1277860A1 (en) * | 2001-07-21 | 2003-01-22 | Schärer Schweiter Mettler AG | Apparatus for manufacturing effect yarns and the use thereof |
US6820405B2 (en) | 2001-07-21 | 2004-11-23 | Scharer Schweiter Mettler Ag | Device for producing effect yarns and use of the device |
FR2845072A1 (en) * | 2002-09-26 | 2004-04-02 | Rieter Icbt | PROCESS FOR THE DEPOSITION OF A WIRE ON A SUPPORT |
WO2004028944A2 (en) * | 2002-09-26 | 2004-04-08 | Rieter Textile Machinery France | Method for setting a yarn on a holder |
WO2004028944A3 (en) * | 2002-09-26 | 2004-05-06 | Rieter Icbt | Method for setting a yarn on a holder |
EP1600414A3 (en) * | 2004-05-25 | 2009-04-15 | Oerlikon Textile GmbH & Co. KG | Method and apparatus for operating a winding machine producing crosswound bobbins |
EP1880963A3 (en) * | 2006-07-12 | 2008-02-06 | SAVIO MACCHINE TESSILI S.p.A. | Thread-guide device for the production of bobbins with traversing modulation |
EP1880964A3 (en) * | 2006-07-12 | 2008-02-06 | SAVIO MACCHINE TESSILI S.p.A. | High-frequency thread-guide device for the production of bobbins with modulated traversing |
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CN101104488B (en) * | 2006-07-12 | 2012-08-29 | Savio纺织机械责任有限公司 | Thread-guide device for the production of bobbins with traversing modulation |
DE102008017302A1 (en) * | 2008-03-31 | 2009-10-01 | Wilhelm Stahlecker Gmbh | Device for changing thread in cross-wound spool at textile machine, has traction body attached to ring-shaped stator consisting of electromagnets so that stator along with traction body form linear actuator |
DE102009017857A1 (en) | 2009-04-17 | 2010-10-21 | Oerlikon Textile Gmbh & Co. Kg | Thread cross-winding device for producing cross-wound bobbin, is supported in winding device of textile machine manufacturing cross-wound bobbin in winding frame of winding device of cross-coil manufacturing textile machine pivoted |
WO2013164190A1 (en) * | 2012-05-04 | 2013-11-07 | SSM Schärer Schweiter Mettler AG | Thread guide unit and spooling device |
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EP2765102A3 (en) * | 2013-02-07 | 2017-12-20 | Rieter CZ s.r.o. | Method for distributing wound yarn and device for carrying it out |
CN104328545A (en) * | 2014-11-09 | 2015-02-04 | 经纬纺织机械股份有限公司 | Yarn guide device for rotor spinning machine |
EP3281902A1 (en) | 2016-08-09 | 2018-02-14 | Georg Sahm GmbH & Co. KG | Coil, winding machine, method for winding a coil and software product |
WO2019228891A1 (en) | 2018-05-30 | 2019-12-05 | Ssm Giudici S.R.L. | Device and method for producing fancy yarns |
US11846044B2 (en) | 2018-05-30 | 2023-12-19 | Ssm Giudici S.R.L. | Device and method for producing fancy yarns |
DE102020110580A1 (en) | 2020-04-17 | 2021-10-21 | Saurer Spinning Solutions Gmbh & Co. Kg | Thread traversing device for a winding device of a textile machine producing cross-wound bobbins |
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Also Published As
Publication number | Publication date |
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DE59008484D1 (en) | 1995-03-23 |
EP0453622B1 (en) | 1995-02-15 |
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