EP1436449A1 - Drive device for the drawing devices of a spinning machine - Google Patents

Drive device for the drawing devices of a spinning machine

Info

Publication number
EP1436449A1
EP1436449A1 EP02767031A EP02767031A EP1436449A1 EP 1436449 A1 EP1436449 A1 EP 1436449A1 EP 02767031 A EP02767031 A EP 02767031A EP 02767031 A EP02767031 A EP 02767031A EP 1436449 A1 EP1436449 A1 EP 1436449A1
Authority
EP
European Patent Office
Prior art keywords
drive
drive motors
motors
frequency converter
motor
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.)
Withdrawn
Application number
EP02767031A
Other languages
German (de)
French (fr)
Inventor
Horst Wolf
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.)
Maschinenfabrik Rieter AG
Original Assignee
Maschinenfabrik Rieter AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Maschinenfabrik Rieter AG filed Critical Maschinenfabrik Rieter AG
Publication of EP1436449A1 publication Critical patent/EP1436449A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H1/00—Spinning or twisting machines in which the product is wound-up continuously
    • D01H1/14—Details
    • D01H1/20—Driving or stopping arrangements
    • D01H1/22—Driving or stopping arrangements for rollers of drafting machines; Roller speed control
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H5/00—Drafting machines or arrangements ; Threading of roving into drafting machine
    • D01H5/18—Drafting machines or arrangements without fallers or like pinned bars
    • D01H5/70—Constructional features of drafting elements
    • D01H5/74—Rollers or roller bearings
    • D01H5/82—Arrangements for coupling roller sections
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P5/00—Arrangements specially adapted for regulating or controlling the speed or torque of two or more electric motors
    • H02P5/74—Arrangements specially adapted for regulating or controlling the speed or torque of two or more electric motors controlling two or more ac dynamo-electric motors

Definitions

  • the invention relates to a drive for the drafting systems of a spinning machine according to the preamble of claim 1.
  • the invention relates to a ring spinning machine.
  • Such a spinning device has long lower cylinders which extend over a plurality of drafting units of the spinning machine in the longitudinal direction thereof. These lower cylinders are driven by drive motors. These are electric motors and are usually fed by frequency converters. It is of great importance to control these drive motors evenly or to drive the lower cylinders evenly so that the drafting systems run smoothly if required to maintain the required high quality.
  • a ring spinning machine is known from DE 29 11 378 C2, the three lower cylinders of which are each driven by an electric motor.
  • Each of the electric motors is assigned its own frequency converter including frequency adjuster. This means that a large number of frequency inverters is required, which is expensive to buy and complex to maintain.
  • the invention has for its object to provide a drive mentioned with which the disadvantages of the prior art are avoided, in particular the effort with respect to the frequency converter is reduced with high quality of the control of the drive motors.
  • a lower cylinder has a plurality of drive motors as drives.
  • the drive motors of a lower cylinder are advantageously fed via exactly one common frequency converter.
  • the frequency converter is preferably a conventional frequency converter and has an adjustable output frequency for controlling the drive motors.
  • One of the drive motors is a so-called servo motor and has a resolver, a type of electrical clock generator.
  • the frequency converter is controlled by means of this resolver. This is possible using a frequency converter for the frequency converter.
  • Known methods can be used to control the frequency converter.
  • the frequency converter is played, so to speak, that it feeds a single high-performance electric motor by means of the signals from the resolver or clock generator.
  • a number of identical electric motors can be fed with exactly one resolver and exactly one frequency converter. This saves effort for costly and maintenance-intensive frequency converters.
  • Four electric motors are preferably fed with one frequency converter.
  • One of these electric motors is the aforementioned servo motor and resolver.
  • the resolver can advantageously be integrated or built into the servo motor.
  • Electric motors are preferably assigned to a lower cylinder and there is exactly one servo motor.
  • the electric motors are in particular mechanically firmly coupled to the lower cylinder and / or to one another. In this way it can be achieved with the invention that the Electric motors or drives of a lower cylinder run exactly synchronously. They do not necessarily have to run at right angles to each other. Only the synchronicity is very important, so that all drafting systems that are driven by the lower cylinder run at the same and constant speed. Two lower cylinders can also be coupled together.
  • Synchronous motors are preferably used as electric motors; permanent magnet synchronous motors (PES) are particularly preferred.
  • PES permanent magnet synchronous motors
  • the spinning device can at least partially have an underfloor structure for the drive.
  • the drive motors are located below the actual drafting system on the machine. There can be a left side and a right side, whereby both sides can be divided into a head and a foot.
  • At least two electric motors drive at least one lower cylinder per side.
  • two electric motors alone drive the input lower cylinder on each side of the head and foot.
  • two electric motors can jointly drive the central pull and lower cylinder.
  • all the lower cylinders have four electric motors, the central pull and the outlet lower cylinders sharing these four electric motors.
  • the electrical feed lines from the frequency converter to each electric motor are matched to one another with regard to their electrical properties. In this way, control differences in terms of runtime and changes due to different line properties can be avoided. The required synchronous control of the electric motors can thus be guaranteed to a particularly high degree.
  • the supply lines can preferably be of the same length and / or identical. Under certain circumstances it is possible to verify this identity of the electrical supply lines by other circuitry To achieve special features. However, the use of identical supply lines, particularly with regard to their length and type of line, is the simplest.
  • Fig. 1 is a schematic fragmentary representation of a drive of a spinning machine including frequency converter and
  • FIG. 2 shows a further schematic illustration of a drive in addition to FIG. 1.
  • Fig. 1 the control of four drive motors 12a-d is shown in a section. These four drive motors are fed by a frequency converter 13 and controlled accordingly.
  • the supply or control takes place via a resolver 15 which is connected to the drive machine 12a on the far left in FIG. 1.
  • the connection is preferably and, as shown in FIG. 1, that the resolver 15 is coupled to the shaft 16a of the drive motor 12a or is seated thereon.
  • the angular position of the drive motor 12a for measuring the load angle and for determining the current is detected via the resolver 15.
  • the signal detected by the resolver 15 on the drive motor 12a is returned to the frequency converter 13.
  • the latter processes it internally in order to control the drive motor 12a and the drive motors 12b-d in the same way. This procedure corresponds to the usual control procedures for synchronous motors.
  • the drive motor 12a is a so-called servo motor because it has the resolver 15. Otherwise, the drive motor 12a can be essentially identical in construction to the drive motors 12b
  • the drive motors 12a-d can all be coupled together or in smaller groups to common shafts. This is possible in an advantageous manner.
  • the drive motors do not have to run exactly at right angles to each other. It is of great importance that they run synchronously, i.e. do not change their angular position to each other.
  • the drive motors 12a-d are coupled with the shafts 16a-d to lower cylinders of spinning devices, for example ring spinning machines. Since these lower cylinders have a large length, it may be that this length results in a twist between two driven regions of a lower cylinder. This becomes critical when this bend changes. This is avoided with the present invention by the particularly precise motor control.
  • the drive motors 12a-d are controlled or supplied with power via the main feed line 17, from which a separate auxiliary feed line 18a-d goes out for each motor.
  • a particularly precise synchronous operation of the drive motors 12a-d is obtained if the feed paths from the frequency converter 13 to each individual drive motor 12 are identical. This applies in particular to the length and type of cable. It should therefore be ensured that the leads to each drive motor are the same.
  • the drive motors 12a-d are distributed over the head and foot of the machine and a left side and a right side in each case. It is preferably permanently excited synchronous motors.
  • FIG. 2 shows, for example only for the left side 25 of a ring spinning machine, an exemplary construction of the drives of lower cylinders 20a-c out.
  • the division between the right side 26 and the left side 25 is symbolically represented by the dash-dotted lines in FIG. 2 below.
  • two drive motors 12 are connected to a lower cylinder 20 via a transmission 21 for one side of such a ring spinning machine.
  • the drive motors 12 are thus firmly coupled to one another on a lower cylinder 20.
  • a resolver 15 is seated on the shaft 16 on the right drive motor 12 in each case.
  • This output 19 drives a frequency converter (not shown). This can be designed similar to that in FIG. 1.
  • the frequency converter controls each drive motor via a main supply line 17 and secondary supply lines 18. If the structure in FIG. 2 corresponds in principle to that in FIG. 1, that is to say four drive motors per frequency converter, additional secondary feed lines 18 are provided from the main feed line 17 to the other two drive motors on the right side of the ring spinning machine.
  • the lower cylinders 20a-c can each represent a rear pull, middle pull and pull of drafting devices or the like.
  • the frequency converter 13 is pretended that it has to feed a single large motor. From this single motor to be fed, the frequency converter receives a drive signal or control signal via the resolver on a motor shaft or the like.
  • the frequency converter receives a drive signal or control signal via the resolver on a motor shaft or the like.
  • several, in particular four, drive motors are fed via the frequency converter 13 by means of the feed lines 17 and 18.
  • the total power of these four motors results in the power that the frequency converter has on a quasi pretreated single large one Has to generate drive motor.
  • it is important to match the line resistances and contact resistances in the leads to the drive motors. This is important so that each motor receives the same amount of electricity or is controlled identically.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Power Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)

Abstract

According to one embodiment of the invention, a ring spinning frame having a plurality of drawing devices, each of which has long drawing rollers (20), can be produced. At least one drawing roller (20) can have several drive motors (12), more particularly four drive motors. The drive motors (12) of a drawing roller (20) are powered as a single drive motor and identically relative to one another by means of a common frequency converter (13). One of said drive motors (12a) has a resolver (15) for controlling the frequency converter thereby said motor being a servo motor.

Description

Antrieb für Streckwerke einer SpinnereimaschineDrive for drafting systems of a spinning machine
Anwendungsgebiet und Stand der TechnikField of application and state of the art
Die Erfindung betrifft einen Antrieb für die Streckwerke einer Spinnereimaschine nach dem Oberbegriff des Anspruches 1. Insbesondere betrifft die Erfindung eine Ringspinnmaschine.The invention relates to a drive for the drafting systems of a spinning machine according to the preamble of claim 1. In particular, the invention relates to a ring spinning machine.
Eine solche Spinnvorrichtung weist lange Unterzylinder auf, die sich über eine Vielzahl von Streckwerken der Spinnereimaschine in deren Längsrichtung erstrecken. Diese Unterzylinder werden mit Antriebsmotoren angetrieben. Diese sind Elektromotoren und werden dabei in der Regel von Frequenzumrichtern gespeist. Es ist von grosser Bedeutung, diese Antriebsmotoren gleichmässig anzusteuern bzw. die Unterzylinder gleichmässig anzutreiben, damit die Streckwerke gewünscht gleichmässig laufen zur Einhaltung geforderter hoher Qualitäten.Such a spinning device has long lower cylinders which extend over a plurality of drafting units of the spinning machine in the longitudinal direction thereof. These lower cylinders are driven by drive motors. These are electric motors and are usually fed by frequency converters. It is of great importance to control these drive motors evenly or to drive the lower cylinders evenly so that the drafting systems run smoothly if required to maintain the required high quality.
Aus der DE 29 11 378 C2 ist eine Ringspinnmaschine bekannt, deren drei Unterzylinder jeweils von einem Elektromotor angetrieben werden. Jedem der Elektromotoren ist dabei ein eigener Frequenzumrichter samt Frequenzsteller zugeordnet. Dadurch wird eine grosse Anzahl von Frequenzumrichtern benötigt, was teuer in der Anschaffung ist und aufwändig von der Wartung her.A ring spinning machine is known from DE 29 11 378 C2, the three lower cylinders of which are each driven by an electric motor. Each of the electric motors is assigned its own frequency converter including frequency adjuster. This means that a large number of frequency inverters is required, which is expensive to buy and complex to maintain.
Aufgabe der ErfindungObject of the invention
Der Erfindung liegt die Aufgabe zugrunde, einen eingangs genannten Antrieb zu schaffen, mit dem die Nachteile des Standes der Technik vermieden werden, insbesondere der Aufwand bezüglich der Frequenzumrichter verringert ist bei hoher Qualität der Ansteuerung der Antriebsmotoren.The invention has for its object to provide a drive mentioned with which the disadvantages of the prior art are avoided, in particular the effort with respect to the frequency converter is reduced with high quality of the control of the drive motors.
Diese Aufgabe wird gelöst durch einen Antrieb mit den Merkmalen des Anspruchs 1. Vorteilhafte Ausgestaltungen der Erfindung sind Gegenstand der Unteransprüche und werden im folgenden näher erläutert. Der Inhalt der Ansprüche wird durch ausdrückliche Bezugnahme zum Inhalt der Beschreibung gemacht.This object is achieved by a drive with the features of claim 1. Advantageous embodiments of the invention are the subject of the subclaims and are explained in more detail below. The content of the Claims are made by express reference to the content of the description.
Erfmdungsgemäss weist ein Unterzylinder mehrere Antriebsmotoren als Antrieb auf. Die Antriebsmotoren eines Unterzylinders werden dabei mit Vorteil über genau einen einzigen gemeinsamen Frequenzumrichter gespeist. Der Frequenzumrichter ist bevorzugt ein üblicher Frequenzumrichter und weist eine verstellbare Ausgangsfrequenz zur Steuerung der Antriebsmotoren auf. Einer der Antriebsmotoren ist dabei ein sogenannter Servomotor und weist einen Resolver, eine Art elektrischen Taktgenerator, auf. Mittels dieses Resolvers wird der Frequenzumrichter gesteuert. Möglich ist dies über einen Frequenzsteller für den Frequenzumrichter. Für die Ansteuerung des Frequenzumrichters kann auf bekannte Verfahren zurückgegriffen werden.According to the invention, a lower cylinder has a plurality of drive motors as drives. The drive motors of a lower cylinder are advantageously fed via exactly one common frequency converter. The frequency converter is preferably a conventional frequency converter and has an adjustable output frequency for controlling the drive motors. One of the drive motors is a so-called servo motor and has a resolver, a type of electrical clock generator. The frequency converter is controlled by means of this resolver. This is possible using a frequency converter for the frequency converter. Known methods can be used to control the frequency converter.
Somit wird erfmdungsgemäss dem Frequenzumrichter sozusagen vorgespielt, er speise mittels der Signale des Resolvers oder Taktgenerators einen einzigen Elektromotor mit grosser Leistung. In Wirklichkeit handelt es sich um mehrere einzelne Elektromotoren mit kleinerer Leistung. Deren gesamte Leistung entspricht dabei der Leistung des grösseren Elektromotors, dessen Existenz dem Frequenzumrichter vorgespielt wird. Auf diese Weise kann mit genau einem Resolver und genau einem Frequenzumrichter eine Anzahl gleich anzusteuernder Elektromotoren gespeist werden. Damit kann Aufwand für kosten- und wartungsintensive Frequenzumrichter eingespart werden. Bevorzugt werden mit einem Frequenzumrichter vier Elektromotoren gespeist. Einer dieser Elektromotoren ist der vorgenannte Servomotor samt Resolver. Dabei kann der Resolver vorteilhaft in den Servomotor integriert oder eingebaut sein.Thus, according to the invention, the frequency converter is played, so to speak, that it feeds a single high-performance electric motor by means of the signals from the resolver or clock generator. In reality, there are several individual electric motors with lower output. Their total output corresponds to the output of the larger electric motor, the existence of which is shown to the frequency converter. In this way, a number of identical electric motors can be fed with exactly one resolver and exactly one frequency converter. This saves effort for costly and maintenance-intensive frequency converters. Four electric motors are preferably fed with one frequency converter. One of these electric motors is the aforementioned servo motor and resolver. The resolver can advantageously be integrated or built into the servo motor.
Bevorzugt sind einem Unterzylinder vier Elektromotoren zugeordnet und es ist genau ein Servomotor vorhanden. Dabei sind die Elektromotoren insbesondere mechanisch fest an den Unterzylinder und/oder miteinander gekoppelt. Auf diese Art und Weise kann mit der Erfindung erreicht werden, dass die Elektromotoren oder Antriebe eines Unterzylinders genau synchron laufen. Dabei brauchen sie nicht zwangsläufig auch winkeltreu zueinander laufen. Lediglich die Synchronität ist sehr wichtig, damit sämtliche Streckwerke, die von dem Unterzylinder angetrieben werden, mit gleicher und gleichbleibender Geschwindigkeit laufen. Es können auch zwei Unterzylinder miteinander gekoppelt werden.Four electric motors are preferably assigned to a lower cylinder and there is exactly one servo motor. The electric motors are in particular mechanically firmly coupled to the lower cylinder and / or to one another. In this way it can be achieved with the invention that the Electric motors or drives of a lower cylinder run exactly synchronously. They do not necessarily have to run at right angles to each other. Only the synchronicity is very important, so that all drafting systems that are driven by the lower cylinder run at the same and constant speed. Two lower cylinders can also be coupled together.
Als Elektromotoren finden bevorzugt Synchronmotoren Anwendung, besonders bevorzugt werden permanenterregte Synchronmotoren (PES).Synchronous motors are preferably used as electric motors; permanent magnet synchronous motors (PES) are particularly preferred.
Die Spinnvorrichtung kann für den Antrieb zumindest teilweise einen Unterflur- Aufbau aufweisen. Dabei sind die Antriebsmotoren unterhalb des eigentlichen Streckwerks auf der Maschine untergebracht. Es können jeweils eine linke Seite und eine rechte Seite vorhanden sein, wobei beide Seiten jeweils in einen Kopf und einen Fuss aufgeteilt sein können. Pro Seite treiben mindestens zwei Elektromotoren mindestens einen Unterzylinder an. Insbesondere kann vorgesehen sein, dass pro Seite am Kopf und am Fuss zwei Elektromotoren allein den Eingangs-Unterzylinder antreiben. Des weiteren können zwei Elektromotoren gemeinsam den Mittelzug- und Auslauf unterzylinder antreiben. Somit weisen durch die jeweils zwei Elektromotoren am Kopf und zwei Elektromotoren am Fuss alle Unterzylinder vier Elektromotoren auf, wobei sich der Mittelzug- und der Auslaufunterzylinder diese vier Elektromotoren teilen.The spinning device can at least partially have an underfloor structure for the drive. The drive motors are located below the actual drafting system on the machine. There can be a left side and a right side, whereby both sides can be divided into a head and a foot. At least two electric motors drive at least one lower cylinder per side. In particular, it can be provided that two electric motors alone drive the input lower cylinder on each side of the head and foot. Furthermore, two electric motors can jointly drive the central pull and lower cylinder. Thus, due to the two electric motors on the head and two electric motors on the foot, all the lower cylinders have four electric motors, the central pull and the outlet lower cylinders sharing these four electric motors.
Des weiteren ist es von Vorteil, wenn die elektrischen Zuleitungen von dem Frequenzumrichter zu jedem Elektromotor bezüglich ihrer elektrischen Eigenschaften aufeinander abgestimmt sind. Dadurch lassen sich Ansteuerungsunterschiede hinsichtlich Laufzeit und Veränderung durch unterschiedliche Leitungseigenschaften vermeiden. Die geforderte synchrone Ansteuerungen der Elektromotoren kann damit in besonders hohem Mass gewährleistet werden. Dabei können die Zuleitungen vorzugsweise gleich lang und/oder identisch sein. Unter Umständen ist es möglich, diese Identität der elektrischen Zuleitungen auch durch andere schaltungstechnische Besonderheiten zu erreichen. Die Verwendung identischer Zuleitungen, insbesondere hinsichtlich ihrer Länge und Leitungsart, ist jedoch die einfachste.Furthermore, it is advantageous if the electrical feed lines from the frequency converter to each electric motor are matched to one another with regard to their electrical properties. In this way, control differences in terms of runtime and changes due to different line properties can be avoided. The required synchronous control of the electric motors can thus be guaranteed to a particularly high degree. The supply lines can preferably be of the same length and / or identical. Under certain circumstances it is possible to verify this identity of the electrical supply lines by other circuitry To achieve special features. However, the use of identical supply lines, particularly with regard to their length and type of line, is the simplest.
Kurzbeschreibung der ZeichnungenBrief description of the drawings
Ein Ausführungsbeispiel der Erfindung ist in den Zeichnungen dargestellt und wird im folgenden näher erläutert. In den Zeichnungen zeigen:An embodiment of the invention is shown in the drawings and is explained in more detail below. The drawings show:
Fig. 1 eine schematische ausschnittsweise Darstellung eines Antriebs einer Spinnereimaschine samt Frequenzumrichter undFig. 1 is a schematic fragmentary representation of a drive of a spinning machine including frequency converter and
Fig. 2 eine weitere schematische Darstellung eines Antriebs in Ergänzung zu Fig. 1.FIG. 2 shows a further schematic illustration of a drive in addition to FIG. 1.
Detaillierte Beschreibung der AusführungsbeispieleDetailed description of the exemplary embodiments
In der Fig. 1 ist in einem Ausschnitt die Ansteuerung von vier Antriebsmotoren 12a - d dargestellt. Diese vier Antriebsmotoren werden durch einen Frequenzumrichter 13 gespeist und entsprechend gesteuert. Die Speisung bzw. Steuerung erfolgt über einen Resolver 15, der mit der Antriebsmaschine 12a ganz links in Fig. 1 verbunden ist. Die Verbindung besteht bevorzugt und wie in Fig. 1 dargestellt darin, dass der Resolver 15 mit der Welle 16a des Antriebsmotors 12a gekoppelt ist bzw. auf dieser sitzt. Über den Resolver 15 wird die Winkellage des Antriebsmotors 12a zur Messung des Lastwinkels und zur Bestimmung des Stroms erfasst. Das von dem Resolver 15 an dem Antriebsmotor 12a erfasste Signal wird an den Frequenzumrichter 13 zurückgegeben. Dieser verarbeitet es intern, um davon abhängig den Antriebsmotor 12a sowie auf dieselbe Art und Weise die Antriebsmotoren 12b - d anzusteuern. Dieses Verfahren entspricht üblichen Ansteuerverfahren von Synchronmotoren. Der Antriebsmotor 12a ist ein sogenannter Servomotor, weil er den Resolver 15 aufweist. Ansonsten kann der Antriebsmotor 12a im wesentlichen baugleich sein mit den Antriebsmotoren 12b - 12d.In Fig. 1, the control of four drive motors 12a-d is shown in a section. These four drive motors are fed by a frequency converter 13 and controlled accordingly. The supply or control takes place via a resolver 15 which is connected to the drive machine 12a on the far left in FIG. 1. The connection is preferably and, as shown in FIG. 1, that the resolver 15 is coupled to the shaft 16a of the drive motor 12a or is seated thereon. The angular position of the drive motor 12a for measuring the load angle and for determining the current is detected via the resolver 15. The signal detected by the resolver 15 on the drive motor 12a is returned to the frequency converter 13. The latter processes it internally in order to control the drive motor 12a and the drive motors 12b-d in the same way. This procedure corresponds to the usual control procedures for synchronous motors. The drive motor 12a is a so-called servo motor because it has the resolver 15. Otherwise, the drive motor 12a can be essentially identical in construction to the drive motors 12b-12d.
Die Antriebsmotoren 12a - d können alle zusammen oder in kleineren Gruppen an gemeinsame Wellen angekoppelt sein. Dies ist jeweils in vorteilhafter Art und Weise möglich. Die Antriebsmotoren müssen nicht exakt winkelgetreu zueinander laufen. Von grosser Bedeutung ist es, dass sie synchron laufen, also ihre Winkellage zueinander nicht ändern. In der Regel sind die Antriebsmotoren 12a - d mit den Wellen 16a - d an Unterzylinder von Spinnvorrichtungen, beispielsweise Ringspinnmaschinen, angekoppelt. Da diese Unterzylinder eine grosse Länge aufweisen, kann es sein, dass sich über diese Länge zwischen zwei angetriebenen Bereichen eines Unterzylinders eine Verdrehung ergibt. Kritisch wird dies dann, wenn sich diese Umbiegung ändert. Dies wird mit der vorliegenden Erfindung vermieden durch die besonders genaue Motoransteuerung.The drive motors 12a-d can all be coupled together or in smaller groups to common shafts. This is possible in an advantageous manner. The drive motors do not have to run exactly at right angles to each other. It is of great importance that they run synchronously, i.e. do not change their angular position to each other. As a rule, the drive motors 12a-d are coupled with the shafts 16a-d to lower cylinders of spinning devices, for example ring spinning machines. Since these lower cylinders have a large length, it may be that this length results in a twist between two driven regions of a lower cylinder. This becomes critical when this bend changes. This is avoided with the present invention by the particularly precise motor control.
Die Ansteuerung bzw. Stromversorgung der Antriebsmotoren 12a - d erfolgt über die Hauptzuleitung 17, von der pro Motor eine eigene Nebenzuleitung 18a - d abgeht. Ein besonders genauer Synchronlauf der Antriebsmotoren 12a - d ergibt sich dann, wenn die Zuleitungswege von dem Frequenzumrichter 13 zu jedem einzelnen Antriebsmotor 12 identisch sind. Dies gilt insbesondere hinsichtlich der Leitungslänge und -art. Es sollte also darauf geachtet werden, dass die Zuleitungen zu jedem Antriebsmotor gleich sind.The drive motors 12a-d are controlled or supplied with power via the main feed line 17, from which a separate auxiliary feed line 18a-d goes out for each motor. A particularly precise synchronous operation of the drive motors 12a-d is obtained if the feed paths from the frequency converter 13 to each individual drive motor 12 are identical. This applies in particular to the length and type of cable. It should therefore be ensured that the leads to each drive motor are the same.
Die Antriebsmotoren 12a - d verteilen sich dabei bei einer typischen Ringspinnmaschine auf Kopf und Fuss der Maschine und jeweils eine linke Seite und eine rechte Seite. Bevorzugt sind es permanenterregte Synchronmotoren.In a typical ring spinning machine, the drive motors 12a-d are distributed over the head and foot of the machine and a left side and a right side in each case. It is preferably permanently excited synchronous motors.
Aus der Fig. 2 geht, beispielsweise nur für die linke Seite 25 einer Ringspinnmaschine, ein beispielhafter Aufbau der Antriebe von Unterzylindern 20a - c hervor. Die Aufteilung zwischen rechter Seite 26 und linker Seite 25 ist durch die Strichpunktierung in Fig. 2 unten symbolisch dargestellt.2 shows, for example only for the left side 25 of a ring spinning machine, an exemplary construction of the drives of lower cylinders 20a-c out. The division between the right side 26 and the left side 25 is symbolically represented by the dash-dotted lines in FIG. 2 below.
In Übereinstimmung mit Fig. 1 sind für die eine Seite einer solchen Ringspinnmaschine zwei Antriebsmotoren 12 über Getriebe 21 mit einem Unterzylinder 20 verbunden. Damit sind in diesem Fall die Antriebsmotoren 12 fest miteinander gekoppelt an einem Unterzylinder 20. An dem jeweils rechten Antriebsmotor 12 sitzt an der Welle 16 ein Resolver 15. Dieser steuert mit seinem Ausgang 19 einen nicht dargestellten Frequenzumrichter an. Dies kann ähnlich wie in Fig. 1 ausgestaltet sein.In accordance with FIG. 1, two drive motors 12 are connected to a lower cylinder 20 via a transmission 21 for one side of such a ring spinning machine. In this case, the drive motors 12 are thus firmly coupled to one another on a lower cylinder 20. A resolver 15 is seated on the shaft 16 on the right drive motor 12 in each case. This output 19 drives a frequency converter (not shown). This can be designed similar to that in FIG. 1.
Von dem nicht dargestellten Frequenzumrichter wiederum wird über eine Haupt-Zuleitung 17 und Neben-Zuleitungen 18 jeder Antriebsmotor angesteuert. Entspricht der Aufbau in Fig. 2 vom Prinzip her demjenigen in Fig. 1 , also vier Antriebsmotoren pro Frequenzumrichter, so sind von der Hauptzuleitung 17 weitere Nebenzuleitungen 18 zu den anderen beiden Antriebsmotoren der rechten Seite der Ringspinnmaschine vorgesehen.The frequency converter, not shown, in turn controls each drive motor via a main supply line 17 and secondary supply lines 18. If the structure in FIG. 2 corresponds in principle to that in FIG. 1, that is to say four drive motors per frequency converter, additional secondary feed lines 18 are provided from the main feed line 17 to the other two drive motors on the right side of the ring spinning machine.
Die Unterzylinder 20a - c können dabei jeweils einen Hinterzug, Mittelzug und Vorzug von Streckwerken oder dergleichen darstellen.The lower cylinders 20a-c can each represent a rear pull, middle pull and pull of drafting devices or the like.
Funktionfunction
Bei der erfindungsgemässen Lösung, von der ein Ausführungsbeispiel symbolisch in Fig. 1 dargestellt ist, wird dem Frequenzumrichter 13 vorgespiegelt, er habe einen einzigen grossen Motor zu speisen. Von diesem einzigen zu speisenden Motor erhält der Frequenzumrichter über den Resolver an einer Motorwelle oder dergleichen ein Antriebssignal oder Steuersignal. In Wirklichkeit werden über den Frequenzumrichter 13 mittels der Zuleitungen 17 und 18 mehrere, insbesondere vier, Antriebsmotoren gespeist. Dabei ergibt die Gesamtleistung dieser vier Motoren diejenige Leistung, die der Frequenzumrichter an einem quasi vorgespiegelten einzigen grossen Antriebsmotor zu erzeugen hat. Um die Ansteuerbedingungen für alle Antriebsmotoren gleich zu machen, kommt es darauf an, die Leitungswiderstände und Übergangswiderstände in den Zuleitungen zu den Antriebsmotoren aufeinander abzustimmen. Dies ist bedeutsam, damit jeder Motor gleich viel Strom bekommt bzw. identisch angesteuert wird. In the solution according to the invention, of which an exemplary embodiment is shown symbolically in FIG. 1, the frequency converter 13 is pretended that it has to feed a single large motor. From this single motor to be fed, the frequency converter receives a drive signal or control signal via the resolver on a motor shaft or the like. In reality, several, in particular four, drive motors are fed via the frequency converter 13 by means of the feed lines 17 and 18. The total power of these four motors results in the power that the frequency converter has on a quasi pretreated single large one Has to generate drive motor. In order to make the control conditions the same for all drive motors, it is important to match the line resistances and contact resistances in the leads to the drive motors. This is important so that each motor receives the same amount of electricity or is controlled identically.

Claims

Patentansprüche claims
1. Antrieb für Streckwerke einer Spinnereimaschine, insbesondere einer Ringspinnmaschine, mit mehreren sich in Maschinenlängsrichtung erstreckenden Unterzylindern (20), denen jeweils wenigstens zwei gleiche, elektrische Antriebsmotoren zugeordnet sind, die an einen gemeinsamen Frequenzumrichter (13) angeschlossen sind, dadurch gekennzeichnet, dass dem Unterzylinder (20) Antriebsmotoren zugeordnet sind, von denen einer als Servomotor (12a) ausgebildet ist, dessen Resolver (15) an den gemeinsamen Frequenzumrichter angeschlossen ist.1. Drive for drafting systems of a spinning machine, in particular a ring spinning machine, with a plurality of lower cylinders (20) extending in the machine longitudinal direction, each of which is assigned at least two identical electric drive motors which are connected to a common frequency converter (13), characterized in that Lower cylinders (20) are assigned to drive motors, one of which is designed as a servo motor (12a), the resolver (15) of which is connected to the common frequency converter.
2. Antrieb nach Anspruch 1 , dadurch gekennzeichnet, dass der Resolver (15) in den Servomotor (12a) eingebaut ist.2. Drive according to claim 1, characterized in that the resolver (15) is installed in the servo motor (12a).
3. Antrieb nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass genau ein Frequenzumrichter (13) vier Antriebsmotoren (12) speist.3. Drive according to claim 1 or 2, characterized in that exactly one frequency converter (13) feeds four drive motors (12).
4. Antrieb nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass ein Unterzylinder (20) vier Antriebsmotoren (12) aufweist und genau ein Antriebsmotor ein Servomotor (12a) ist, wobei vorzugsweise die Antriebsmotor (12) mechanisch fest an den Unterzylinder (20) und/oder miteinander gekoppelt sind.4. Drive according to one of the preceding claims, characterized in that a lower cylinder (20) has four drive motors (12) and exactly one drive motor is a servo motor (12a), the drive motor (12) preferably being mechanically fixed to the lower cylinder (20) and / or are coupled to one another.
5. Antrieb nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Antriebsmotoren (12) Synchronmotoren sind, insbesondere mit permanenter Erregung.5. Drive according to one of the preceding claims, characterized in that the drive motors (12) are synchronous motors, in particular with permanent excitation.
6. Antrieb nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass er für einen Unterflur-Einbau ausgebildet ist, wobei vorzugsweise zumindest ein Antriebsmotor (12) unter dem Streckwerk angeordnet ist. 6. Drive according to one of the preceding claims, characterized in that it is designed for underfloor installation, preferably at least one drive motor (12) being arranged under the drafting system.
7. Antrieb nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Spinnereimaschine eine linke Seite (25) und eine rechte Seite (26) aufweist und jeweils einen Kopf (23) und einen Fuss (24), wobei pro Seite (25, 26) mindestens zwei Antriebsmotoren (12) mindestens einen Unterzylinder (20) antreiben.7. Drive according to one of the preceding claims, characterized in that the spinning machine has a left side (25) and a right side (26) and each have a head (23) and a foot (24), with each side (25, 26 ) drive at least two drive motors (12) at least one lower cylinder (20).
8. Antrieb nach Anspruch 7, dadurch gekennzeichnet, dass pro Seite (25, 26) am Kopf (23) und am Fuss (24) zwei Antriebsmotoren (12) allein den Eingangsunterzylinder (20a) und zwei Antriebsmotoren (12) gemeinsam den Mittelzug- (20b) und Auslaufunterzylinder (20c) antreiben.8. Drive according to claim 7, characterized in that per side (25, 26) at the head (23) and at the foot (24) two drive motors (12) alone the input lower cylinder (20a) and two drive motors (12) together the central pull (20b) and lower outlet cylinder (20c).
9. Antrieb nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Frequenzumrichter (13) mittels elektrischer Zuleitungen (17, 18) mit den Antriebsmotoren (12) verbunden ist und diese elektrischen Zuleitungen (18) von dem Frequenzumrichter zu den Antriebsmotoren aufeinander abgestimmt sind, insbesondere bezüglich ihrer elektrischen Eigenschaften.9. Drive according to one of the preceding claims, characterized in that the frequency converter (13) is connected to the drive motors (12) by means of electrical feed lines (17, 18) and these electrical feed lines (18) are matched to one another by the frequency converter to the drive motors , especially regarding their electrical properties.
10. Antrieb nach Anspruch 9, dadurch gekennzeichnet, dass die elektrischen Zuleitungen (18) gleich lang und/oder identisch sind. 10. Drive according to claim 9, characterized in that the electrical supply lines (18) are of the same length and / or identical.
EP02767031A 2001-10-15 2002-10-15 Drive device for the drawing devices of a spinning machine Withdrawn EP1436449A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10151647 2001-10-15
DE2001151647 DE10151647A1 (en) 2001-10-15 2001-10-15 Drive for the long lower rollers of sliver drawing units, at a ring spinner, has identical motors for the rollers linked to a common frequency converter
PCT/CH2002/000566 WO2003033786A1 (en) 2001-10-15 2002-10-15 Drive device for the drawing devices of a spinning machine

Publications (1)

Publication Number Publication Date
EP1436449A1 true EP1436449A1 (en) 2004-07-14

Family

ID=7703048

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02767031A Withdrawn EP1436449A1 (en) 2001-10-15 2002-10-15 Drive device for the drawing devices of a spinning machine

Country Status (6)

Country Link
EP (1) EP1436449A1 (en)
JP (1) JP2005505704A (en)
CN (1) CN100335695C (en)
CH (1) CH695780A5 (en)
DE (1) DE10151647A1 (en)
WO (1) WO2003033786A1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005054817A1 (en) * 2005-11-15 2007-05-24 Saurer Gmbh & Co. Kg Ring spinning machine comprises drawframes whose draw rollers are driven by a main drive unit and have auxiliary drive units distributed along their length
DE102006002386A1 (en) * 2006-01-17 2007-08-02 Saurer Gmbh & Co. Kg Motor assembly for stretching rollers of long ring spinning machine, includes stators with partially-open regions in their circumferences
CN101200823B (en) * 2006-12-12 2010-09-01 天津工业大学 Spin tester
CN102031599B (en) * 2011-01-25 2012-07-25 东华大学 Spun yarn testing machine
CN105200582A (en) * 2015-09-13 2015-12-30 安徽中福毛纺制帽有限公司 Novel drawing frame structure
DE102018112797A1 (en) * 2018-05-29 2019-12-05 Maschinenfabrik Rieter Ag Method for determining operating states of a textile machine and a textile machine

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2911378A1 (en) * 1979-03-23 1980-10-02 Zinser Textilmaschinen Gmbh RING SPIDER OR RING TWISTING MACHINE
DE58903262D1 (en) * 1988-07-06 1993-02-25 Rieter Ag Maschf SYNCHRONIZABLE DRIVE SYSTEMS.
DE19637757B4 (en) * 1995-10-11 2005-06-09 Maschinenfabrik Rieter Ag spinning machine
DE19909969C1 (en) * 1999-03-06 2000-07-06 Zinser Textilmaschinen Gmbh Electric power supply for spinning machine has prepared current supply cables for lengths of machine sections with plugs/sockets and take-off lines for section to be assembled

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO03033786A1 *

Also Published As

Publication number Publication date
JP2005505704A (en) 2005-02-24
CH695780A5 (en) 2006-08-31
DE10151647A1 (en) 2003-04-24
CN100335695C (en) 2007-09-05
CN1571868A (en) 2005-01-26
WO2003033786A1 (en) 2003-04-24

Similar Documents

Publication Publication Date Title
DE19525593C2 (en) Multi-motor drive for a printing press
CH681986A5 (en)
DE102005026779A1 (en) Electric drive device
DE19903869A1 (en) Drive control for sheet fed printing press
DE1956835A1 (en) Power transmission device
DE102004054918A1 (en) Device with at least one long-stator linear drive for operating magnetic levitation vehicles
DE3331953A1 (en) Electromagnetic linear drive
EP0193749B1 (en) Mechanical rectilinear drive unit
DE19537587C2 (en) Drive control device for a multi-motor drive of a printing press
EP1436449A1 (en) Drive device for the drawing devices of a spinning machine
DE10254118B4 (en) Method for driving a printing machine
DE2165945A1 (en) Device for dynamic testing of elongated test pieces
DE69416473T2 (en) Device for the transmission of electrical power signals to a rotating system
EP1168591B1 (en) Torque limited electric motor, in particular windshield wiper motor
EP3351084B1 (en) Cutting unit for agricultural vehicle
DE29512597U1 (en) Actuator for a printing machine
EP2079086A2 (en) Electric transformer unit
DE102009049618A1 (en) Swivelable drive i.e. rotary table, for mounting/processing work-piece in mounting/automation engineering, has rotary plate whose bearing surfaces are arranged parallel to each other in displaced manner in reference to rotary axis of plate
DE19704702B4 (en) Elimination of loose effects in printing presses
DE102013208569A1 (en) Circuit arrangement with redundant half-bridges for operating an electrical machine
EP3403326A1 (en) Vacuum pump drive having two frequency converters
DE4424752B4 (en) Method and apparatus for synchronized driving of printing press components
EP1156005A2 (en) Folding pocket
DE4132765A1 (en) RPM regulation system for printing machine drive - provides separate current regulation for main drive motor and each auxiliary drive motor
DE102008042975A1 (en) Electrical machine i.e. direct current motor, for use in steering drive device of motor vehicle, has coils and coil sections connected with each other in electrical series connection, and coil group formed from coil sections

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20040421

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SK TR

AX Request for extension of the european patent

Extension state: AL LT LV MK RO SI

17Q First examination report despatched

Effective date: 20071126

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20090623