EP0768271A2 - Winding apparatus for a continuously running thread - Google Patents

Winding apparatus for a continuously running thread Download PDF

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Publication number
EP0768271A2
EP0768271A2 EP96116021A EP96116021A EP0768271A2 EP 0768271 A2 EP0768271 A2 EP 0768271A2 EP 96116021 A EP96116021 A EP 96116021A EP 96116021 A EP96116021 A EP 96116021A EP 0768271 A2 EP0768271 A2 EP 0768271A2
Authority
EP
European Patent Office
Prior art keywords
drum
winding
contact roller
thread
speed
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
Application number
EP96116021A
Other languages
German (de)
French (fr)
Other versions
EP0768271A3 (en
EP0768271B1 (en
Inventor
Jürgen Rom
Jörg Bamberg
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.)
Georg Sahm GmbH and Co KG
Original Assignee
Georg Sahm GmbH and Co KG
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 Georg Sahm GmbH and Co KG filed Critical Georg Sahm GmbH and Co KG
Publication of EP0768271A2 publication Critical patent/EP0768271A2/en
Publication of EP0768271A3 publication Critical patent/EP0768271A3/en
Application granted granted Critical
Publication of EP0768271B1 publication Critical patent/EP0768271B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H61/00Applications of devices for metering predetermined lengths of running material
    • B65H61/005Applications of devices for metering predetermined lengths of running material for measuring speed of running yarns
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H54/00Winding, coiling, or depositing filamentary material
    • B65H54/02Winding and traversing material on to reels, bobbins, tubes, or like package cores or formers
    • B65H54/40Arrangements for rotating packages
    • B65H54/52Drive contact pressure control, e.g. pressing arrangements
    • 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
    • B65H67/04Arrangements for removing completed take-up packages and or replacing by cores, formers, or empty receptacles at winding or depositing stations; Transferring material between adjacent full and empty take-up elements
    • B65H67/044Continuous winding apparatus for winding on two or more winding heads in succession
    • B65H67/048Continuous winding apparatus for winding on two or more winding heads in succession having winding heads arranged on rotary capstan head
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2511/00Dimensions; Position; Numbers; Identification; Occurrences
    • B65H2511/20Location in space
    • B65H2511/21Angle
    • B65H2511/212Rotary position
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2513/00Dynamic entities; Timing aspects
    • B65H2513/10Speed
    • B65H2513/11Speed angular
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2557/00Means for control not provided for in groups B65H2551/00 - B65H2555/00
    • B65H2557/20Calculating means; Controlling methods
    • B65H2557/24Calculating methods; Mathematic models
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2557/00Means for control not provided for in groups B65H2551/00 - B65H2555/00
    • B65H2557/30Control systems architecture or components, e.g. electronic or pneumatic modules; Details thereof
    • 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 winding machine for a continuously running thread, with a rotatable drum on which two drivable winding spindles are rotatably mounted, with a laying device and a contact roller, which are arranged upstream of the drum in the thread path, the contact roller being in circumferential contact with the spool, which forms on the winding spindle in operation, and the distance between the axis of the contact roller and the axis of the winding spindle in operation can be varied in the sense of an increase in accordance with the growing diameter of the coil.
  • a method for regulating a winding machine for a continuously running thread in which a drum on which two drivable winding spindles are rotatably mounted are rotated relative to a contact roller and the thread is wound onto the bobbin with a laying device via the contact roller, the distance between the axis of the contact roller and the axis of the winding spindle in operation being changed in the sense of an enlargement in accordance with the growing diameter of the bobbin .
  • a winding machine of this type is known from EP 0 374 536 B1.
  • the contact roller used here can be pivoted on a rocker arm or can be moved in a straight line in a straight guide.
  • a sensor is provided which detects the movement of the contact roller relative to the surface of the bobbin forming on the winding spindle in operation.
  • the sensor belongs to a control device and works as a two-point control element. If the contact roller is moved by the diameter of the bobbin, which increases during the winding process, with the axis of the drum at a standstill, then a control pulse is applied to the rotary drive of the drum and the drum is rotated, so that the direction of movement of the contact roller is reversed and this falls below the set trigger point on the control element.
  • the number of readjustment steps per unit of time decreases due to the migration of the bobbin while the drum is rotating and the increasingly slow growing bobbin diameter, ie the change in the contact pressure via the contact roller slows down.
  • Another disadvantage is that a separate complex control device is required for control.
  • the invention has for its object to provide a further winding machine of the type described above, which is inexpensive to manufacture and easy to maintain and also has a small size.
  • a control device is provided for the rotation of the drum, that the winding machine has a device for determining the speed of the thread and a device for determining the speed of the winding spindle in operation, and that the control device has a computing unit for calculating the respective current diameter of the bobbin forming on the operating bobbin and the respective current angular velocity between the beginning and end of each computing cycle as control variables for the rotation of the drum over the entire winding cycle.
  • the invention is based on the idea of first providing a regulating device instead of the known control device in order to regulate the rotation of the drum in a quasi-constant movement sequence.
  • This can be designed so that, for. B. runs every 10 ms a computing cycle, each followed by a control cycle. This creates a quasi-continuous movement of the drum during the winding cycle.
  • the winding machine does not require any additional elements, such as sensors or the like, for the regulation, but rather already existing elements which are necessary for the control of the Thread tension on the winding machine are used.
  • a device for determining the speed of the thread and a device for determining the speed of the winding spindle in operation are used.
  • the current diameter of the bobbin being formed is calculated from the thread speed and the speed of the winding spindle in operation, and the respective current angular velocity between the beginning and the end of each computing cycle is determined.
  • the drum is rotated further at this current angular velocity.
  • a respective setpoint of the angle of rotation for the drum is determined from the calculation of the respective current diameter.
  • the current angular velocity at which the drum is rotated is calculated from the measured period of time that has elapsed between the beginning and the end of each computing cycle and the respective target value of the angle of rotation.
  • the setpoint of the angle of rotation is the angle between the axis of the winding spindle at the beginning and at the end of a respective calculation cycle above the axis of the drum.
  • the advantage here is that no additional sensors are required, but existing sensors are used for thread tension control.
  • the control device is no longer dependent on a movement of the contact roller, ie the contact roller can be designed and arranged completely freely.
  • the contact roller it is possible to use the contact roller to exert such a contact pressure on the circumference of the coil that is formed, which is designed according to criteria that are independent of the control system, for example, it has a continuous course.
  • a constant decrease in the contact pressure is possible without fluctuations, which has a favorable effect on the coil structure.
  • a microprocessor can be provided as the computing unit.
  • Such a microprocessor represents a suitable structural unit for the implementation of the computing unit various desired arithmetic operations and steps can be summarized, as they are also required for thread tension control.
  • the device for determining the speed of the thread can have a device for detecting the speed of the contact roller. Since the diameter of the contact roller and the run-up angle at which the thread is placed obliquely on the circumference of the contact roller are known, the speed of the thread can be calculated in a simple manner. However, any other device for determining the speed of the thread can also be used, for example a separate device which is arranged upstream of the laying device or at another location.
  • the device for determining the speed of the thread and the device for determining the speed of the winding spindle in operation are also designed as control devices for the rotation of the drum. This means that existing elements are used anyway.
  • the contact roller can be mounted so that it can be deflected relative to the axis of the drum and thus to the respective winding spindle, a device for controlling a constant or controlled variable contact pressure of the contact roller on the winding spindle in operation being provided.
  • the avoidable mounting of the contact roller makes sense on the one hand, in order to be able to turn the drum with the two winding spindles.
  • the contact roller does not necessarily have to move, movement of the contact roller can nevertheless be provided, but this then serves another purpose, namely the application of a contact pressure or a contact force curve via the winding cycle.
  • the computing unit can have a memory for receiving a table of values for the setpoint of the rotation angle of the drum as a function of the diameter of the coil. It goes without saying that such a value table can be entered depending on the application. However, it is also possible to design the arithmetic unit so that the setpoint of the angle of rotation is calculated as a function of the diameter of the coil. The computing cycle will then take a little longer. In view of the mechanically moving parts of the winding machine, however, this has no disadvantageous consequences.
  • the method for controlling a winding machine is characterized in that the drum is rotated continuously with angular speeds changing from computing cycle to computing cycle.
  • the invention is based on the idea of leaving the rotating and stopping of the drum alternately, as is known in the prior art, and changing it into an uninterrupted, continuous rotation of the drum.
  • Changing angular velocities are used in succession, ie the angular velocity of the rotary drive of the drum is switched to another angular velocity, so that the drum definitely performs a continuous movement, the course of the changing angular velocities having a hyperbolic character.
  • the current angular velocities used decrease during a winding trip.
  • slightly increasing angular velocities can also result at the end of a winding trip. In this area, however, the change in angular velocity from control cycle to control cycle is not particularly great.
  • Computation cycles can advantageously be used which are repeated at time intervals constant over the winding cycle, for example in particular in 10 msec. It is perfectly possible to repeat the calculation cycles at such short intervals. However, it is not harmful if the number of computing cycles is reduced and the time intervals are increased, since the drive of the drum anyway contains a large number of mechanical elements which prove to be comparatively slow. It is also possible to use different numbers of computing cycles on the one hand and control cycles on the other hand, to form averages or the like. In general, however, this is not necessary.
  • a method is possible in which the current angular velocity of the rotation of the drum changes for each control cycle as a function of a constant increase in the diameter of the coil.
  • the diameter of the bobbin will grow comparatively less quickly than at the beginning of a winding cycle.
  • the angular velocities will change significantly more at the beginning of a winding trip than at the end of a winding trip.
  • the setpoint value of the angle of rotation over the winding travel remains constant, in particular in the central region of the winding travel, over a larger area.
  • the respective current angular velocity of the rotation of the drum is calculated from the previous control cycle. Although this is a small error, this can easily be accepted because the required accuracy is achieved by the large number of computing and control cycles.
  • a thread 1 is shown, which runs continuously in the direction of an arrow 2 from a spinning shaft to a winding machine 3.
  • the thread runs over a laying device 4 on the circumference of a contact roller 5.
  • a drum 6 is rotatably or pivotably mounted about its axis 7 according to arrow 8.
  • two winding spindles 9 and 10 are rotatably mounted.
  • the axes 11 and 12 of the winding spindles 9 and 10 are vertically aligned below the axis 13 of the contact roller 5.
  • An empty tube 14 is located on the winding spindle 9.
  • This winding spindle 9 is shown in the working position, that is to say at the beginning of a winding process or a winding cycle.
  • the winding spindle 10 with a coil 15 wound thereon is in the reserve position in which the bobbin change is carried out.
  • the winding machine 3 is designed so that two threads 1 are wound on two spools 15 simultaneously.
  • the winding machine 3 has a motor 16 for driving the winding spindle 9 in the working position and in the reserve position.
  • a motor 17 is for driving the winding spindle 10 in the reserve position and the working position intended.
  • a motor 18 serves to drive the drum 6.
  • a gear 19 serves to transmit the rotary drive of the two motors 16 and 17 to the winding spindles 9 and 10 despite their pivotability over the drum 6.
  • the winding machine 3 has a schematically illustrated control device 20.
  • a computing unit 21, for example in the form of a microprocessor, can be part of the control device 20.
  • FIG 3 illustrates once again the relative positions during a winding trip.
  • the winding spindle 9 is shown with its axis 11 and the empty sleeve 14 at the beginning of the winding process.
  • the circumference of the contact roller 5 lies against the circumference of the sleeve 14.
  • the drum 6 is rotated according to arrow 8, so that the winding spindle 9, on which the bobbin 15 forms, evades in the clockwise direction.
  • the pivoting or rotation of the drum 6 takes place over a rotation angle 22.
  • the winding spindle 10 rotates with the drum 6 in the same direction of rotation.
  • the angle of rotation 22 increases as the diameter of the bobbin 15 increases.
  • the angle of rotation 22 is the angle that is spanned between the axis 11 of the winding spindle 9 in operation at the beginning of the winding process and almost at the end of a winding cycle above the fixed axis 7 of the drum 6 . It can thus be seen that a certain rotation angle 22 belongs to a certain diameter 23 of the winding spindle 15. It can also be seen from FIG. 3 that the circumference of the contact roller 5 always lies against the circumference of the coil 15 that is being formed, but the contact point changes. This change depends on the geometric relationships of the arrangement of the parts to one another.
  • the contact point can initially move so that the wrap angle with which the thread 1 wraps around the circumference of the contact roller 5 initially decreases, but increases somewhat towards the end of a winding trip.
  • the contact roller 5 can be mounted so as to be avoidable relative to the axis 7 of the drum 6 by means of a bearing (not shown). It is also possible to get one To provide a device for controlling a constant or controlled variable contact pressure of the contact roller on the circumference of the coil 15, which forms the winding spindle located on its operation.
  • a sensor 24 is used to detect the speed of the contact roller 5.
  • a sensor 25 is used to detect the speed of the winding spindle 9.
  • a sensor 26 detects the speed of the winding spindle 10.
  • a frequency converter 27 is assigned to the motor 16 for driving the winding spindle 9. Accordingly, a frequency converter 28 is provided in the drive of the winding spindle 10.
  • An OR element 29 serves to change the working position or reserve position between the two winding spindles 9 and 10.
  • An index "is” denotes a variable in its current value.
  • An index "target” identifies a calculated target value.
  • a difference value is designated by DELTA.
  • FIG. 5 shows the course of the angle of rotation phi of the drum 6 as a function of the increase in diameter of the coil 15 over the diameter D or also over time. The course of the angular velocity over time is also shown. This curve is hyperbolic in character.
  • a value table 33 is stored in the memory 32 of the computing unit 21.
  • the growing diameters 23 of the coil 15 (for example in coil growth rates of 2 mm each) are assigned certain angles of rotation 22 (phi soll ).
  • the time 36 is measured, which takes a coil diameter increase of z. B. 2 mm leads.
  • the current diameter 23 (D) of the coil 15 is calculated from the speed n K of the contact roller and the speed n S of the coil 15 or the winding spindle 9, which is currently in the working position.
  • the drum 6 is rotated further until the next DELTA D spool increase is reached.
  • the angle of rotation phi ist achieved in this case supplied by the resolver 38 of the motor 18 of the drum, is fed back as the actual value to the I controller 34 of the computing unit 21 and compared with the target value phi soll from the stored value table 33.
  • the angular velocity omega of the I controller 34 is corrected to the control device 20 by iterative approximation, so that the deviation between phi and phi is intended in the course of the winding cycle is always smaller.
  • control device 20 without storing a table of values:
  • the current diameter 23 of the coil 15 (D) is, as above, calculated from the speed n K of the contact roller 5 and the speed n S of the winding spindle 9 or 10 with the coil 15.
  • omega f (phi should , T)
  • the drum 6 stands still until the start of the second calculation cycle. With the calculated angular velocity omega (> 0), the drum 6 is rotated further until the next calculation cycle gives a new value for the angular velocity omega.
  • the actual value of the rotation angle phi is supplied by the resolver 38 of the motor 18 of the drum 6, are compared.
  • the angular velocity omega of the I controller 34 is corrected to the control device 20 by iterative approximation, so that the deviation between phi and phi is intended in the course of the winding cycle is always smaller.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Winding Filamentary Materials (AREA)
  • Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)
  • Replacement Of Web Rolls (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
  • Tension Adjustment In Filamentary Materials (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)

Abstract

A winding machine for a continuously accumulating thread (1) has a rotatable drum (6) on which are mounted two reel spindles which can be rotated. Ahead of the drum as the thread runs, the machine also has a thread laying device (4) and a roller (5) which makes contact on its periphery with the reel (15) being formed on the operating spindle (9 or 10). The distance between the roller axis (13) and the operating spindle axis (11) can be changed in an expanding direction corresp. to the increasing reel dia. The machine has a drum rotation controller (20), a device for determining thread speed and a device for determining the rotational speed of the operating spindle. The controller has a computer unit (21) for calculating the present instantaneous dia. of the reel under formation and its present instantaneous angular speed between beginning and end of each computing cycle for use as control quantities for the drum rotation over the complete reel travel. Also claimed is a process for control of the winding machine using the above appts. where the drum is rotated with angular speed which varies continuously from one computing cycle to the next.

Description

Die Erfindung betrifft eine Spulmaschine für einen kontinuierlich auflaufenden Faden, mit einer drehbaren Trommel, auf der zwei antreibbare Spulspindeln drehbar gelagert sind, mit einer Verlegeeinrichtung und einer Kontaktwalze, die der Trommel im Fadenlauf vorgeordnet sind, wobei die Kontaktwalze in Umfangskontakt mit der Spule steht, die sich auf der in Betrieb befindlichen Spulspindel bildet, und der Abstand zwischen der Achse der Kontaktwalze und der Achse der in Betrieb befindlichen Spulspindel im Sinne einer Vergrößerung entsprechend dem wachsenden Durchmesser der Spule veränderbar ist. Es wird auch ein Verfahren zur Regelung einer Spulmaschine für einen kontinuierlich auflaufenden Faden beschrieben, bei dem eine Trommel, auf der zwei antreibbare Spulspindeln drehbar gelagert sind, gegenüber einer Kontaktwalze gedreht wird und der Faden mit einer Verlegeeinrichtung über die Kontaktwalze auf die Spule aufgewickelt wird, wobei der Abstand zwischen der Achse der Kontaktwalze und der Achse der in Betrieb befindlichen Spulspindel im Sinne einer Vergrößerung entsprechend dem wachsenden Durchmesser der Spule verändert wird.The invention relates to a winding machine for a continuously running thread, with a rotatable drum on which two drivable winding spindles are rotatably mounted, with a laying device and a contact roller, which are arranged upstream of the drum in the thread path, the contact roller being in circumferential contact with the spool, which forms on the winding spindle in operation, and the distance between the axis of the contact roller and the axis of the winding spindle in operation can be varied in the sense of an increase in accordance with the growing diameter of the coil. A method for regulating a winding machine for a continuously running thread is also described, in which a drum on which two drivable winding spindles are rotatably mounted are rotated relative to a contact roller and the thread is wound onto the bobbin with a laying device via the contact roller, the distance between the axis of the contact roller and the axis of the winding spindle in operation being changed in the sense of an enlargement in accordance with the growing diameter of the bobbin .

Eine Spulmaschine dieser Art ist aus der EP 0 374 536 B1 bekannt. Die dabei eingesetzte Kontaktwalze ist auf einer Schwinge schwenkbar oder in einer Geradführung geradlinig verschiebbar gelagert. Es ist ein Sensor vorgesehen, der die Bewegung der Kontaktwalze relativ zu der Oberfläche der sich auf der in Betrieb befindlichen Spulspindel bildenden Spule erfaßt. Der Sensor gehört zu einer Steuereinrichtung und arbeitet als Zweipunkt-Steuerglied. Wird die Kontaktwalze von dem sich beim Spulvorgang vergrößernden Durchmesser der Spule bei stillstehender Achse der Trommel über das am Sensor eingestellte Maß bewegt, dann wird ein Steuerimpuls auf den Drehantrieb der Trommel gegeben und die Trommel gedreht, so daß die Bewegungsrichtung der Kontaktwalze umgekehrt wird und diese den eingestellten Auslösepunkt an dem Steuerglied wieder unterschreitet. Dann wird der Antrieb der Trommel stillgesetzt. Die Trommel wird also in kleinen Schritten mit jeweils konstanter Winkelgeschwindigkeit angetrieben. Obwohl die bewegte Kontaktwalze nur einen relativ geringen Weg zurücklegt, beispielsweise 2 mm, ist diese Bewegung dennoch notwendige Voraussetzung für die Steuerung des Drehantriebes der Trommel. Durch die Bewegung der Kontaktwalze und die dadurch ausgelöste Steuerung der Trommel entstehen zwischen der Kontaktwalze und dem Umfang der Spule nicht nur unterschiedliche Anpreßkräfte, sondern diese Anpreßkräfte zeigen auch einen unstetigen Verlauf. Durch die Verschiebung der Berührungslinie zwischen Kontaktwalze und dem Umfang der sich bildenden Spule wird die Verlegegenauigkeit nachteilig beeinflußt. Weiterhin ist nachteilig, daß die Schalthäufigkeit dieser Steuereinrichtung mit dem Sensor über der Spulreise abnimmt. Der Schaltweg des Sensors bleibt dagegen konstant. Durch das Auswandern der Spule bei sich drehender Trommel und durch den zunehmend langsamer wachsenden Spulendurchmesser nimmt die Anzahl der Nachsteuerschritte pro Zeiteinheit ab, d. h. der Wechsel in der Anpreßkraft über die Kontaktwalze verlangsamt sich. Weiterhin ist nachteilig, daß zur Steuerung eine separate aufwendige Steuereinrichtung erforderlich ist.A winding machine of this type is known from EP 0 374 536 B1. The contact roller used here can be pivoted on a rocker arm or can be moved in a straight line in a straight guide. A sensor is provided which detects the movement of the contact roller relative to the surface of the bobbin forming on the winding spindle in operation. The sensor belongs to a control device and works as a two-point control element. If the contact roller is moved by the diameter of the bobbin, which increases during the winding process, with the axis of the drum at a standstill, then a control pulse is applied to the rotary drive of the drum and the drum is rotated, so that the direction of movement of the contact roller is reversed and this falls below the set trigger point on the control element. Then the drive of the drum is stopped. The drum is thus driven in small steps with a constant angular velocity. Although the moving contact roller only covers a relatively short distance, for example 2 mm, this movement is nevertheless a necessary prerequisite for controlling the rotary drive of the drum. As a result of the movement of the contact roller and the control of the drum triggered thereby, not only do different contact forces arise between the contact roller and the circumference of the coil, but these contact forces also show a discontinuous course. By shifting the line of contact between the contact roller and the circumference of the coil being formed, the laying accuracy is adversely affected. Another disadvantage is that the switching frequency of this control device with the sensor over the winding cycle decreases. The switching path of the sensor, however, remains constant. The number of readjustment steps per unit of time decreases due to the migration of the bobbin while the drum is rotating and the increasingly slow growing bobbin diameter, ie the change in the contact pressure via the contact roller slows down. Another disadvantage is that a separate complex control device is required for control.

Der Erfindung liegt die Aufgabe zugrunde, eine weitere Spulmaschine der eingangs beschriebenen Art bereitzustellen, die preiswert herstellbar und wartungsfreundlich ist und darüberhinaus eine kleine Baugröße besitzt.The invention has for its object to provide a further winding machine of the type described above, which is inexpensive to manufacture and easy to maintain and also has a small size.

Erfindungsgemäß wird dies bei einer Spulmaschine der eingangs beschriebenen Art dadurch erreicht, daß für die Drehung der Trommel eine Regeleinrichtung vorgesehen ist, daß die Spulmaschine eine Einrichtung zur Ermittlung der Geschwindigkeit des Fadens und eine Einrichtung zur Ermittlung der Drehzahl der in Betrieb befindlichen Spulspindel aufweist, und daß die Regeleinrichtung eine Recheneinheit zur Berechnung des jeweiligen aktuellen Durchmessers der sich auf der in Betrieb befindlichen Spulspindel bildenden Spule und der jeweiligen aktuellen Winkelgeschwindigkeit zwischen dem Anfang und dem Ende eines jeden Rechenzyklusses als Regelgrößen für die Drehung der Trommel über die gesamte Spulreise aufweist.According to the invention, this is achieved in a winding machine of the type described in the introduction in that a control device is provided for the rotation of the drum, that the winding machine has a device for determining the speed of the thread and a device for determining the speed of the winding spindle in operation, and that the control device has a computing unit for calculating the respective current diameter of the bobbin forming on the operating bobbin and the respective current angular velocity between the beginning and end of each computing cycle as control variables for the rotation of the drum over the entire winding cycle.

Die Erfindung geht von dem Gedanken aus, zunächst anstelle der bekannten Steuereinrichtung eine Regeleinrichtung vorzusehen, um damit die Drehung der Trommel in einem quasikonstanten Bewegungsablauf zu regeln. Dies kann so gestaltet werden, daß z. B. alle 10 ms ein Rechenzyklus abläuft, an den sich jeweils ein Regelzyklus anschließt. Es entsteht damit gleichsam eine quasistetige Bewegung der Trommel während der Spulreise. Vorteilhaft ist, daß die Spulmaschine für die Regelung keine zusätzlichen Elemente, wie Sensoren o. dgl., erforderlich macht, sondern ohnehin vorhandene Elemente, die für die Steuerung der Fadenspannung an der Spulmaschine vorgesehen sind, nutzt. So wird auf eine Einrichtung zur Ermittlung der Geschwindigkeit des Fadens und auf eine Einrichtung zur Ermittlung der Drehzahl der in Betrieb befindlichen Spulspindel zurückgegriffen. Über die Recheneinheit, die Bestandteil der Regeleinrichtung sein kann, wird aus der Fadengeschwindigkeit und der Drehzahl der in Betrieb befindlichen Spulspindel jeweils der aktuelle Durchmesser der sich bildenden Spule berechnet und die jeweilige aktuelle Winkelgeschwindigkeit zwischen dem Anfang und dem Ende eines jeden Rechenzyklusses ermittelt. Mit dieser aktuellen Winkelgeschwindigkeit wird die Trommel weitergedreht. Dabei wird aus der Berechnung des jeweiligen aktuellen Durchmessers ein jeweiliger Sollwert des Drehwinkel für die Trommel ermittelt. Aus der gemessenen Zeitspanne, die zwischen dem Anfang und dem Ende eines jeden Rechenzyklusses vergangen ist, und dem jeweiligen Sollwert des Drehwinkels wird die aktuelle Winkelgeschwindigkeit berechnet, mit der die Trommel weitergedreht wird. Bei dem Sollwert des Drehwinkels handelt es sich um den Winkel zwischen der Achse der Spulspindel am Anfang und am Ende eines jeweiligen Rechenzyklusses über der Achse der Trommel. Vorteilhaft ist dabei, daß keine zusätzlichen Sensoren erforderlich sind, sondern für die Fadenspannungsregelung vorhandene Sensoren genutzt werden. Die Regeleinrichtung ist nicht mehr von einer Bewegung der Kontaktwalze abhängig, d. h. die Kontaktwalze kann völlig frei gestaltet und angeordnet werden. Beispielsweise ist es möglich, über die Kontaktwalze eine solche Anpreßkraft auf den Umfang der sich bildenden Spule auszuüben, die nach von der Regelung unabhängigen Kriterien gestaltet ist, beispielsweise einen stetigen Verlauf aufweist. Hier ist beispielsweise auch eine stetige Abnahme der Anpreßkraft ohne Schwankungen möglich, was sich günstig auf den Spulenaufbau auswirkt.The invention is based on the idea of first providing a regulating device instead of the known control device in order to regulate the rotation of the drum in a quasi-constant movement sequence. This can be designed so that, for. B. runs every 10 ms a computing cycle, each followed by a control cycle. This creates a quasi-continuous movement of the drum during the winding cycle. It is advantageous that the winding machine does not require any additional elements, such as sensors or the like, for the regulation, but rather already existing elements which are necessary for the control of the Thread tension on the winding machine are used. Thus, a device for determining the speed of the thread and a device for determining the speed of the winding spindle in operation are used. Via the computing unit, which can be part of the control device, the current diameter of the bobbin being formed is calculated from the thread speed and the speed of the winding spindle in operation, and the respective current angular velocity between the beginning and the end of each computing cycle is determined. The drum is rotated further at this current angular velocity. A respective setpoint of the angle of rotation for the drum is determined from the calculation of the respective current diameter. The current angular velocity at which the drum is rotated is calculated from the measured period of time that has elapsed between the beginning and the end of each computing cycle and the respective target value of the angle of rotation. The setpoint of the angle of rotation is the angle between the axis of the winding spindle at the beginning and at the end of a respective calculation cycle above the axis of the drum. The advantage here is that no additional sensors are required, but existing sensors are used for thread tension control. The control device is no longer dependent on a movement of the contact roller, ie the contact roller can be designed and arranged completely freely. For example, it is possible to use the contact roller to exert such a contact pressure on the circumference of the coil that is formed, which is designed according to criteria that are independent of the control system, for example, it has a continuous course. Here, for example, a constant decrease in the contact pressure is possible without fluctuations, which has a favorable effect on the coil structure.

Als Recheneinheit kann ein Mikroprozessor vorgesehen sein. Ein solcher Mikroprozessor stellt eine geeignete Baueinheit für die Realisierung der Recheneinheit dar. In ihm können die verschiedensten gewünschten Rechenoperationen und -schritte zusammengefaßt sein, wie sie u. a. auch für die Fadenspannungsregelung erforderlich sind.A microprocessor can be provided as the computing unit. Such a microprocessor represents a suitable structural unit for the implementation of the computing unit various desired arithmetic operations and steps can be summarized, as they are also required for thread tension control.

Die Einrichtung zur Ermittlung der Geschwindigkeit des Fadens kann eine Einrichtung zur Erfassung der Drehzahl der Kontaktwalze aufweisen. Da der Durchmesser der Kontaktwalze und der Auflaufwinkel, in welchem der Faden auf den Umfang der Kontaktwalze schräg aufgelegt wird, bekannt sind, läßt sich daraus in einfacher Weise die Geschwindigkeit des Fadens berechnen. Es kann aber auch jede andere, Einrichtung zur Ermittlung der Geschwindigkeit des Fadens eingesetzt werden, beispielsweise eine separate Einrichtung, die stromauf der Verlegeeinrichtung oder auch an anderer Stelle angeordnet ist.The device for determining the speed of the thread can have a device for detecting the speed of the contact roller. Since the diameter of the contact roller and the run-up angle at which the thread is placed obliquely on the circumference of the contact roller are known, the speed of the thread can be calculated in a simple manner. However, any other device for determining the speed of the thread can also be used, for example a separate device which is arranged upstream of the laying device or at another location.

Besonders vorteilhaft ist es, wenn die Einrichtung zur Ermittlung der Geschwindigkeit des Fadens und die Einrichtung zur Ermittlung der Drehzahl der in Betrieb befindlichen Spulspindel auch als Regeleinrichtung für die Drehung der Trommel ausgebildet sind. Damit werden ohnehin vorhandene Elemente zur Nutzung herangezogen.It is particularly advantageous if the device for determining the speed of the thread and the device for determining the speed of the winding spindle in operation are also designed as control devices for the rotation of the drum. This means that existing elements are used anyway.

Die Kontaktwalze kann relativ zu der Achse der Trommel und damit zu der jeweiligen Spulspindel ausweichbar gelagert sein, wobei eine Einrichtung zur Steuerung einer konstanten oder gesteuert veränderlichen Anpreßkraft der Kontaktwalze auf die in Betrieb befindliche Spulspindel vorgesehen ist. Die ausweichbare Lagerung der Kontaktwalze ist einerseits sinnvoll, um die Trommel mit den beiden Spulspindeln durchdrehen zu können. Da sich die Kontaktwalze jedoch nicht notwendigerweise bewegen muß, kann dennoch eine Bewegung der Kontaktwalze vorgesehen sein, wobei diese aber dann aber einem anderen Zweck dient, nämlich der Aufbringung einer Anpreßkraft bzw. eines Anpreßkraftverlaufes über die Spulreise.The contact roller can be mounted so that it can be deflected relative to the axis of the drum and thus to the respective winding spindle, a device for controlling a constant or controlled variable contact pressure of the contact roller on the winding spindle in operation being provided. The avoidable mounting of the contact roller makes sense on the one hand, in order to be able to turn the drum with the two winding spindles. However, since the contact roller does not necessarily have to move, movement of the contact roller can nevertheless be provided, but this then serves another purpose, namely the application of a contact pressure or a contact force curve via the winding cycle.

Die Recheneinheit kann einen Speicher zur Aufnahme einer Wertetabelle für den Sollwert des Drehwinkels der Trommel in Abhängigkeit vom Durchmesser der Spule aufweisen. Es versteht sich, daß eine solche Wertetabelle, je nach Anwendungsfall, eingegeben werden kann. Es ist aber auch möglich, die Recheneinheit so auszubilden, daß der Sollwert des Drehwinkels in Abhängigkeit vom Durchmesser der Spule errechnet wird. Dabei wird dann zwar der Rechenzyklus etwas länger dauern. In Anbetracht der mechanisch zu bewegenden Teile der Spulmaschine ist dies jedoch ohne nachteilige Folgen.The computing unit can have a memory for receiving a table of values for the setpoint of the rotation angle of the drum as a function of the diameter of the coil. It goes without saying that such a value table can be entered depending on the application. However, it is also possible to design the arithmetic unit so that the setpoint of the angle of rotation is calculated as a function of the diameter of the coil. The computing cycle will then take a little longer. In view of the mechanically moving parts of the winding machine, however, this has no disadvantageous consequences.

Das Verfahren zur Regelung einer Spulmaschine kennzeichnet sich erfindungsgemäß dadurch, daß die Trommel kontinuierlich mit sich von Rechenzyklus zu Rechenzyklus ändernden Winkelgeschwindigkeiten gedreht wird.According to the invention, the method for controlling a winding machine is characterized in that the drum is rotated continuously with angular speeds changing from computing cycle to computing cycle.

In verfahrensmäßiger Hinsicht geht die Erfindung von der Vorstellung aus, das abwechselnde Drehen und Stillsetzen der Trommel, wie es im Stand der Technik bekannt ist, zu verlassen und in einen ununterbrochenen kontinuierlichen Drehvorgang der Trommel zu verändern. Dabei kommen sich ändernde Winkelgeschwindigkeiten nacheinander zur Anwendung, d. h. aus einer Winkelgeschwindigkeit heraus wird der Drehantrieb der Trommel in eine andere Winkelgeschwindigkeit umgeschaltet, so daß auf jeden Fall die Trommel eine kontinuierliche Bewegung ausführt, wobei der Verlauf der sich ändernden Winkelgeschwindigkeiten einen hyperbolischen Charakter hat. Im allgemeinen nehmen die benutzten aktuellen Winkelgeschwindigkeiten im Laufe einer Spulreise ab. Je nach den geometrischen Verhältnissen in der Anordnung der Elemente der Spulmaschine können sich am Ende einer Spulreise jedoch auch wieder geringfügig zunehmende Winkelgeschwindigkeiten ergeben. In diesem Bereich ist jedoch die Änderung der Winkelgeschwindigkeit von Regelzyklus zu Regelzyklus nicht sonderlich groß.From a procedural point of view, the invention is based on the idea of leaving the rotating and stopping of the drum alternately, as is known in the prior art, and changing it into an uninterrupted, continuous rotation of the drum. Changing angular velocities are used in succession, ie the angular velocity of the rotary drive of the drum is switched to another angular velocity, so that the drum definitely performs a continuous movement, the course of the changing angular velocities having a hyperbolic character. In general, the current angular velocities used decrease during a winding trip. Depending on the geometric relationships in the arrangement of the elements of the winding machine, however, slightly increasing angular velocities can also result at the end of a winding trip. In this area, however, the change in angular velocity from control cycle to control cycle is not particularly great.

Es können vorteilhaft Rechenzyklen Verwendung finden, die in über die Spulreise konstanten Zeitabständen, beispielsweise insbesondere in 10 msec, wiederholt werden. Die Wiederholung der Rechenzyklen in solch kurzen zeitlichen Abständen ist durchaus möglich. Es ist aber nicht schädlich, wenn die Anzahl der Rechenzyklen verkleinert und die zeitlichen Abstände vergrößert werden, da der Antrieb der Trommel ohnehin eine Vielzahl mechanischer Elemente enthält, die sich als vergleichsweise träge erweisen. Es ist auch möglich, unterschiedliche Anzahlen von Rechenzyklen einerseits und Regelzyklen andererseits anzuwenden, Mittelwerte zu bilden oder dergleichen. Im allgemeinen ist dies jedoch nicht erforderlich.Computation cycles can advantageously be used which are repeated at time intervals constant over the winding cycle, for example in particular in 10 msec. It is perfectly possible to repeat the calculation cycles at such short intervals. However, it is not harmful if the number of computing cycles is reduced and the time intervals are increased, since the drive of the drum anyway contains a large number of mechanical elements which prove to be comparatively slow. It is also possible to use different numbers of computing cycles on the one hand and control cycles on the other hand, to form averages or the like. In general, however, this is not necessary.

Es ist ein Verfahren möglich, bei dem eine Änderung der aktuellen Winkelgeschwindigkeit der Drehung der Trommel für jeden Regelzyklus in Abhängigkeit eines konstanten Zuwachses des Durchmessers der Spule erfolgt. Pro Zeiteinheit wird der Durchmesser der Spule am Ende der Spulreise vergleichsweise weniger schnell wachsen als zu Beginn einer Spulreise. Umgekehrt werden sich die Winkelgeschwindigkeiten zu Beginn einer Spulreise wesentlich stärker ändern als zum Ende einer Spulreise. Der Sollwert des Drehwinkels über die Spulreise verbleibt insbesondere im Mittelbereich der Spulreise über einen größeren Bereich konstant.A method is possible in which the current angular velocity of the rotation of the drum changes for each control cycle as a function of a constant increase in the diameter of the coil. At the end of the winding cycle, the diameter of the bobbin will grow comparatively less quickly than at the beginning of a winding cycle. Conversely, the angular velocities will change significantly more at the beginning of a winding trip than at the end of a winding trip. The setpoint value of the angle of rotation over the winding travel remains constant, in particular in the central region of the winding travel, over a larger area.

Die jeweilige aktuelle Winkelgeschwindigkeit der Drehung der Trommel wird aus dem jeweils vorangegangenen Regelzyklus errechnet. Dies stellt zwar einen kleinen Fehler dar. Dieser kann jedoch ohne weiteres in Kauf genommen werden, weil die erforderliche Genauigkeit durch die Vielzahl der Rechenzyklen und Regelzyklen erreicht wird.The respective current angular velocity of the rotation of the drum is calculated from the previous control cycle. Although this is a small error, this can easily be accepted because the required accuracy is achieved by the large number of computing and control cycles.

Die Erfindung wird anhand der Zeichnungen weiter beschrieben und verdeutlicht. Es zeigen:

Figur 1
den Aufbau einer Spulmaschine in Frontansicht,
Figur 2
eine schematisierte Seitenansicht der Spulmaschine,
Figur 3
eine Darstellung der relativen Anordnung zwischen Kontaktwalze und den Spulspindeln auf der Trommel,
Figur 4
eine bevorzugte Ausführungsform der Regeleinrichtung in Form eines Schaltbildes und
Figur 5
ein Diagramm des Sollwertes des Drehwinkels und des Verlaufes der Winkelgeschwindigkeit über den wachsenden Durchmesser der Spule bzw. der Zeit.
The invention is further described and clarified with reference to the drawings. Show it:
Figure 1
the construction of a winding machine in front view,
Figure 2
a schematic side view of the winding machine,
Figure 3
a representation of the relative arrangement between the contact roller and the winding spindles on the drum,
Figure 4
a preferred embodiment of the control device in the form of a circuit diagram and
Figure 5
a diagram of the target value of the angle of rotation and the course of the angular velocity over the growing diameter of the coil or the time.

In Figur 1 ist ein Faden 1 dargestellt, der in Richtung eines Pfeiles 2 von einem Spinnschacht kontinuierlich einer Spulmaschine 3 zuläuft. Der Faden läuft über eine Verlegeeinrichtung 4 auf den Umfang einer Kontaktwalze 5. Im Bereich unterhalb oder seitlich von der Kontaktwalze 5 ist eine Trommel 6 um ihre Achse 7 drehbar bzw. schwenkbar gemäß Pfeil 8 gelagert. Auf der Trommel 6 sind zwei Spulspindeln 9 und 10 drehbar gelagert. In dem dargestellten Beispiel befinden sich die Achsen 11 und 12 der Spulspindeln 9 und 10 unterhalb der Achse 13 der Kontaktwalze 5 vertikal ausgerichtet. Auf der Spulspindel 9 befindet sich eine leere Hülse 14. Diese Spulspindel 9 ist in Arbeitsstellung gezeigt, also zu Beginn eines Aufwickelvorganges bzw. einer Spulreise. Die Spulspindel 10 mit einer darauf befindlichen aufgewickelten Spule 15 befindet sich in der Reservestellung, in der der Spulenwechsel durchgeführt wird.In Figure 1, a thread 1 is shown, which runs continuously in the direction of an arrow 2 from a spinning shaft to a winding machine 3. The thread runs over a laying device 4 on the circumference of a contact roller 5. In the area below or to the side of the contact roller 5, a drum 6 is rotatably or pivotably mounted about its axis 7 according to arrow 8. On the drum 6, two winding spindles 9 and 10 are rotatably mounted. In the example shown, the axes 11 and 12 of the winding spindles 9 and 10 are vertically aligned below the axis 13 of the contact roller 5. An empty tube 14 is located on the winding spindle 9. This winding spindle 9 is shown in the working position, that is to say at the beginning of a winding process or a winding cycle. The winding spindle 10 with a coil 15 wound thereon is in the reserve position in which the bobbin change is carried out.

Aus Figur 2 ist erkennbar, daß die Spulmaschine 3 so ausgebildet ist, daß gleichzeitig zwei Fäden 1 auf zwei Spulen 15 aufgewickelt werden. Die Spulmaschine 3 besitzt einen Motor 16 für den Antrieb der Spulspindel 9 in der Arbeitsstellung und in der Reservestellung. Ein Motor 17 ist für den Antrieb der Spulspindel 10 in der Reservestellung und der Arbeitsstellung vorgesehen. Ein Motor 18 dient schließlich dein Antrieb der Trommel 6. Ein Getriebe 19 dient der Übertragung des Drehantriebes der beiden Motore 16 und 17 auf die Spulspindeln 9 und 10 trotz deren Verschwenkbarkeit über die Trommel 6. Die Spulmaschine 3 weist eine schematisch dargestellte Regeleinrichtung 20 auf. Eine Recheneinheit 21, beispielsweise in Form eines Mikroprozessors, kann Bestandteil der Regeleinrichtung 20 sein.From Figure 2 it can be seen that the winding machine 3 is designed so that two threads 1 are wound on two spools 15 simultaneously. The winding machine 3 has a motor 16 for driving the winding spindle 9 in the working position and in the reserve position. A motor 17 is for driving the winding spindle 10 in the reserve position and the working position intended. Finally, a motor 18 serves to drive the drum 6. A gear 19 serves to transmit the rotary drive of the two motors 16 and 17 to the winding spindles 9 and 10 despite their pivotability over the drum 6. The winding machine 3 has a schematically illustrated control device 20. A computing unit 21, for example in the form of a microprocessor, can be part of the control device 20.

Figur 3 verdeutlicht noch einmal die Relativlagen während einer Spulreise. Unterhalb der Kontaktwalze 5 ist die Spulspindel 9 mit ihrer Achse 11 und der leeren Hülse 14 zu Beginn des Wickelvorganges dargestellt. Der Umfang der Kontaktwalze 5 liegt am Umfang der Hülse 14 an. Während der Spulreise bzw. während des Aufspulvorganges wird die Trommel 6 gemäß Pfeil 8 gedreht, so daß die Spulspindel 9, auf der sich die Spule 15 bildet, im Rechtsdrehsinn ausweicht. Die Verschwenkung bzw. Drehung der Trommel 6 erfolgt dabei über einen Drehwinkel 22. Es versteht sich, daß sich dabei im gleichen Drehsinn die Spulspindel 10 mit der Trommel 6 dreht. Der Drehwinkel 22 vergrößert sich mit anwachsendem Durchmesser der Spule 15. Der Drehwinkel 22 ist der Winkel, der zwischen der Achse 11 der in Betrieb befindlichen Spulspindel 9 zu Beginn des Aufwickelvorgangs und nahezu am Ende einer Spulreise über der ortsfesten Achse 7 der Trommel 6 aufgespannt wird. Damit ist erkennbar, daß zu einem bestimmten Durchmesser 23 der Spulspindel 15 ein bestimmter Drehwinkel 22 gehört. Aus Figur 3 ist auch erkennbar, daß die Kontaktwalze 5 mit ihrem Umfang immer am Umfang der sich bildenden Spule 15 anliegt, wobei sich jedoch der Kontaktpunkt verändert. Diese Veränderung richtet sich nach den geometrischen Verhältnissen der Anordnung der Teile zueinander. Im Verlauf einer Spulreise kann der Kontaktpunkt zunächst so wandern, daß sich der Umschlingungswinkel, mit dem der Faden 1 den Umfang der Kontaktwalze 5 umschlingt, zunächst verringert, jedoch gegen Ende einer Spulreise wieder etwas vergrößert. Die Kontaktwalze 5 kann über eine hier nicht dargestellte Lagerung relativ zur Achse 7 der Trommel 6 ausweichbar gelagert sein. Es ist auch möglich, eine Einrichtung zur Steuerung einer konstanten oder gesteuert veränderlichen Anpreßkraft der Kontaktwalze auf den Umfang der Spule 15 vorzusehen, die sich auf deren Betrieb befindlichen Spulspindel bildet.Figure 3 illustrates once again the relative positions during a winding trip. Below the contact roller 5, the winding spindle 9 is shown with its axis 11 and the empty sleeve 14 at the beginning of the winding process. The circumference of the contact roller 5 lies against the circumference of the sleeve 14. During the winding cycle or during the winding process, the drum 6 is rotated according to arrow 8, so that the winding spindle 9, on which the bobbin 15 forms, evades in the clockwise direction. The pivoting or rotation of the drum 6 takes place over a rotation angle 22. It goes without saying that the winding spindle 10 rotates with the drum 6 in the same direction of rotation. The angle of rotation 22 increases as the diameter of the bobbin 15 increases. The angle of rotation 22 is the angle that is spanned between the axis 11 of the winding spindle 9 in operation at the beginning of the winding process and almost at the end of a winding cycle above the fixed axis 7 of the drum 6 . It can thus be seen that a certain rotation angle 22 belongs to a certain diameter 23 of the winding spindle 15. It can also be seen from FIG. 3 that the circumference of the contact roller 5 always lies against the circumference of the coil 15 that is being formed, but the contact point changes. This change depends on the geometric relationships of the arrangement of the parts to one another. In the course of a winding trip, the contact point can initially move so that the wrap angle with which the thread 1 wraps around the circumference of the contact roller 5 initially decreases, but increases somewhat towards the end of a winding trip. The contact roller 5 can be mounted so as to be avoidable relative to the axis 7 of the drum 6 by means of a bearing (not shown). It is also possible to get one To provide a device for controlling a constant or controlled variable contact pressure of the contact roller on the circumference of the coil 15, which forms the winding spindle located on its operation.

In Figur 4 sind schematisch wesentliche Elemente der Regeleinrichtung 20 und der Recheneinheit 21 dargestellt. Ein Sensor 24 dient der Erfassung der Drehzahl der Kontaktwalze 5. Ein Sensor 25 dient der Erfassung der Drehzahl der Spulspindel 9. Ein Sensor 26 erfaßt die Drehzahl der Spulspindel 10. Dem Motor 16 für den Antrieb der Spulspindel 9 ist ein Frequenzumrichter 27 zugeordnet. Entsprechend ist im Antrieb der Spulspindel 10 ein Frequenzumrichter 28 vorgesehen. Ein Oderglied 29 dient dem Wechsel der Arbeitsstellung bzw. Reservestellung zwischen den beiden Spulspindeln 9 und 10.In Figure 4, essential elements of the control device 20 and the computing unit 21 are shown schematically. A sensor 24 is used to detect the speed of the contact roller 5. A sensor 25 is used to detect the speed of the winding spindle 9. A sensor 26 detects the speed of the winding spindle 10. A frequency converter 27 is assigned to the motor 16 for driving the winding spindle 9. Accordingly, a frequency converter 28 is provided in the drive of the winding spindle 10. An OR element 29 serves to change the working position or reserve position between the two winding spindles 9 and 10.

Die Recheneinheit 21 weist einen PID-Regler 30, ein Rechenglied 31, einen Speicher 32, in den eine Wertetabelle 33 eingebbar ist, einen I-Regler 34 und einen weiteren PID-Regler 35 auf. Zu der Recheneinheit gehört auch ein Timer 36, der zur Erfassung der Zeit dient. Dem Motor 18 für den Antrieb der Trommel 6 ist ein Servoregler 37 vorgeschaltet. Im Motor 18 ist ein Resolver 38 angeordnet. Die einzelnen Elemente der Regeleinrichtung 20 sind so miteinander verbunden, wie dies durch die Linienführungen angedeutet ist. Dabei sind folgende Hinweiszeichen benutzt:

D =
Durchmesser 23 der Spule 15 (veränderlich)
nS =
Drehzahl der Spulspindel 9 oder 10 (veränderlich)
nK =
Drehzahl der Kontaktwalze 5 (konstant)
phi =
Drehwinkel 22 der Trommel 6 (veränderlich)
f =
Frequenz
T =
Zeit
omega =
Winkelgeschwindigkeit der Drehung der Trommel 6 (veränderlich)
The computing unit 21 has a PID controller 30, a computing element 31, a memory 32 into which a value table 33 can be entered, an I controller 34 and a further PID controller 35. A timer 36, which serves to record the time, also belongs to the computing unit. A servo controller 37 is connected upstream of the motor 18 for driving the drum 6. A resolver 38 is arranged in the motor 18. The individual elements of the control device 20 are connected to one another as is indicated by the lines. The following signs are used:
D =
Diameter 23 of the coil 15 (variable)
n S =
Speed of winding spindle 9 or 10 (variable)
n K =
Speed of the contact roller 5 (constant)
phi =
Angle of rotation 22 of the drum 6 (variable)
f =
frequency
T =
time
omega =
Angular speed of rotation of the drum 6 (variable)

Ein Index "ist" kennzeichnet eine veränderliche Größe in ihrem jeweils aktuellen Wert. Ein Index "soll" kennzeichnet einen berechneten Sollwert. Mit DELTA ist ein Differenzwert bezeichnet.An index "is" denotes a variable in its current value. An index "target" identifies a calculated target value. A difference value is designated by DELTA.

In Figur 5 ist der Verlauf des Drehwinkels phi der Trommel 6 als Funktion des Durchmesserzuwachses der Spule 15 über den Durchmesser D oder auch der Zeit dargestellt. Weiterhin ist der Verlauf der Winkelgeschwindigkeit über der Zeit dargestellt. Diese Kurve verläuft mit hyperbolischem Charakter.FIG. 5 shows the course of the angle of rotation phi of the drum 6 as a function of the increase in diameter of the coil 15 over the diameter D or also over time. The course of the angular velocity over time is also shown. This curve is hyperbolic in character.

In der Folge werden zwei mögliche Betriebsweisen der Regeleinrichtung 20 der Spulmaschine 3 verdeutlicht:Two possible operating modes of the control device 20 of the winding machine 3 are illustrated below:

Bei einer ersten Betriebsweise ist eine Wertetabelle 33 im Speicher 32 der Recheneinheit 21 hinterlegt. In dieser Wertetabelle 33 sind den wachsenden Durchmessern 23 der Spule 15 (z. B. in Spulenzuwachsraten von je 2 mm) bestimmte Drehwinkel 22 (phisoll) zugeordnet. Bei Beginn der Spulreise wird mit dem Timer 36 die Zeit gemessen, die zu einem Spulendurchmesserzuwachs von z. B. 2 mm führt. Der jeweils aktuelle Durchmesser 23 (D) der Spule 15 wird aus der Drehzahl nK der Kontaktwalze und der Drehzahl nS der Spule 15 bzw. der Spulspindel 9, die sich gerade in Arbeitsstellung befindet, berechnet. Die Umfangsgeschwindigkeit der Kontaktwalze 5 ist eine Funktion der Geschwindigkeit des Fadens 1, die als konstant angenommen wird. Damit ergibt sich das Anwachsen des aktuellen Durchmessers D der Spule 15 D = f (n S , n K )

Figure imgb0001
In a first operating mode, a value table 33 is stored in the memory 32 of the computing unit 21. In this table of values 33, the growing diameters 23 of the coil 15 (for example in coil growth rates of 2 mm each) are assigned certain angles of rotation 22 (phi soll ). At the beginning of the winding trip, the time 36 is measured, which takes a coil diameter increase of z. B. 2 mm leads. The current diameter 23 (D) of the coil 15 is calculated from the speed n K of the contact roller and the speed n S of the coil 15 or the winding spindle 9, which is currently in the working position. The peripheral speed of the contact roller 5 is a function of the speed of the thread 1, which is assumed to be constant. This results in the increase in the current diameter D of the coil 15 D = f (n S , n K )
Figure imgb0001

Ist dieser festgelegte Spulenzuwachs DELTA D (z. B. 2 mm) erreicht, wird aus der Wertetabelle 33 der dazugehörige Sollwert des Drehwinkels 22 (phisoll) entnommen. Aus der gemessenen Zeit T und dem Sollwert des Drehwinkels wird die Winkelgeschwindigkeit omega berechnet. omega = f (phi soll , T)

Figure imgb0002
If this fixed coils increase DELTA D (z. B. 2 mm) is reached, (phi soll) taken from the table of values 33 of the associated target value of the rotation angle of the 22nd The angular velocity omega is calculated from the measured time T and the target value of the angle of rotation. omega = f (phi should , T)
Figure imgb0002

Mit dieser Winkelgeschwindigkeit omega wird die Trommel 6 weitergedreht, bis der nächste Spulenzuwachs DELTA D erreicht ist. Der dabei erreichte Drehwinkel phiist, geliefert vom Resolver 38 des Motors 18 der Trommel wird als Ist-Wert an den I-Regler 34 der Recheneinheit 21 zurückgeführt und mit dem Sollwert phisoll aus der hinterlegten Wertetabelle 33 verglichen. Bei Abweichung wird die Winkelgeschwindigkeit omega vom I-Regler 34 der Regeleinrichtung 20 durch iterative Annäherung korrigiert, so daß die Abweichung zwischen phisoll und phiist im Verlauf der Spulreise immer kleiner wird.At this angular velocity omega, the drum 6 is rotated further until the next DELTA D spool increase is reached. The angle of rotation phi ist achieved in this case , supplied by the resolver 38 of the motor 18 of the drum, is fed back as the actual value to the I controller 34 of the computing unit 21 and compared with the target value phi soll from the stored value table 33. In case of deviation, the angular velocity omega of the I controller 34 is corrected to the control device 20 by iterative approximation, so that the deviation between phi and phi is intended in the course of the winding cycle is always smaller.

Es ist aber auch möglich, die Regeleinrichtung 20 ohne Hinterlegung einer Wertetabelle zu betreiben:However, it is also possible to operate the control device 20 without storing a table of values:

Der jeweils aktuelle Durchmesser 23 der Spule 15 (D) wird, wie oben, auch hier aus der Drehzahl nK der Kontaktwalze 5 und der Drehzahl nS der Spulspindel 9 oder 10 mit der Spule 15 berechnet. Die Umfangsgeschwindigkeit der Kontaktwalze 5 ist eine Funktion der Geschwindigkeit des Fadens 1, mit der dieser zugeführt bzw. aufgespult wird. D = f (n S , n K )

Figure imgb0003
The current diameter 23 of the coil 15 (D) is, as above, calculated from the speed n K of the contact roller 5 and the speed n S of the winding spindle 9 or 10 with the coil 15. The peripheral speed of the contact roller 5 is a function of the speed of the thread 1 with which it is fed or wound up. D = f (n S , n K )
Figure imgb0003

Hieraus und aus einer Konstanten, gebildet aus den geometrischen Daten der Spulmaschine 3, wird der dazugehörige Sollwert des Drehwinkel phisoll errechnet. phi soll = f (D, Konstante)

Figure imgb0004
From this and from a constant, formed from the geometric data of the winding machine 3, the associated target value of the angle of rotation phi target is calculated. phi should = f (D, constant)
Figure imgb0004

Unter Einbeziehen der gemessenen Zeit T zwischen dem Start zweier Rechenzyklen und dem errechneten Wert des Drehwinkels phisoll wird die Winkelgeschwindigkeit omega berechnet. omega = f (phi soll , T)

Figure imgb0005
Taking the measured time T between the start of two computing cycles and the calculated value of the rotation angle phi soll , the angular velocity omega is calculated. omega = f (phi should , T)
Figure imgb0005

Beim Start der Spulreise (beim ersten Rechenzyklus) ist die Zeit T = 0, und somit ist auch die Winkelgeschwindigkeit omega gleich 0. Die Trommel 6 steht still bis zum Beginn des zweiten Rechenzykluses. Mit der errechneten Winkelgeschwindigkeit omega (> 0) wird die Trommel 6 weitergedreht bis der nächste Rechenzyklus einen neuen Wert der Winkelgeschwindigkeit omega ergibt.At the start of the winding cycle (in the first calculation cycle), the time T = 0, and thus the angular velocity omega is also 0. The drum 6 stands still until the start of the second calculation cycle. With the calculated angular velocity omega (> 0), the drum 6 is rotated further until the next calculation cycle gives a new value for the angular velocity omega.

Der Soll-Wert des Drehwinkels phisoll wird mit dem Ist-Wert des Drehwinkels phiist, geliefert vom Resolver 38 des Motors 18 der Trommel 6, verglichen. Bei Abweichungen wird die Winkelgeschwindigkeit omega von dem I-Regler 34 der Regeleinrichtung 20 durch iterative Annäherung korrigiert, so daß die Abweichung zwischen phisoll und phiist im Verlauf der Spulreise immer kleiner wird. To the target value of the rotation angle phi is the actual value of the rotation angle phi is supplied by the resolver 38 of the motor 18 of the drum 6, are compared. In case of deviations, the angular velocity omega of the I controller 34 is corrected to the control device 20 by iterative approximation, so that the deviation between phi and phi is intended in the course of the winding cycle is always smaller.

Es ist erkennbar, daß die Trommel 6 während der Spulreise kontinuierlich angetrieben wird. Es gibt keine Stillstandszeiten. Lediglich die Winkelgeschwindigkeit omega wird in Schritten geändert und angepaßt.It can be seen that the drum 6 is driven continuously during the winding travel. There are no downtimes. Only the angular velocity omega is changed and adjusted in steps.

BEZUGSZEICHENLISTEREFERENCE SIGN LIST

11
- Faden- thread
22nd
- Pfeil- arrow
33rd
- Spulmaschine- winding machine
44th
- Verlegeeinrichtung- laying device
55
- Kontaktwalze- contact roller
66
- Trommel- drum
77
- Achse- axis
88th
- Pfeil- arrow
99
- Spulspindel- winding spindle
1010th
- Spulspindel- winding spindle
1111
- Achse- axis
1212th
- Achse- axis
1313
- Achse- axis
1414
- Hülse- sleeve
1515
- Spule- Kitchen sink
1616
- Motor- Engine
1717th
- Motor- Engine
1818th
- Motor- Engine
1919th
- Getriebe- Transmission
2020th
- Regeleinrichtung- control device
2121
- Recheneinheit- computing unit
2222
- Drehwinkel- angle of rotation
2323
- Durchmesser- diameter
2424th
- Sensor- sensor
2525th
- Sensor- sensor
2626
- Sensor- sensor
2727
- Frequenzumrichter- Frequency converter
2828
- Frequenzumrichter- Frequency converter
2929
- Oderglied- Or link
3030th
- PID-Regler- PID controller
3131
- Rechenglied- Calculator
3232
- Speicher- Storage
3333
- Wertetabelle- Table of values
3434
- I-Regler- I controller
3535
- PID-Regler- PID controller
3636
- Timer- timer
3737
- Servoregler- servo drive
3838
- Resolver- resolver

Claims (10)

Spulmaschine für einen kontinuierlich auflaufenden Faden (1), mit einer drehbaren Trommel (6), auf der zwei antreibbare Spulspindeln (9, 10) drehbar gelagert sind, mit einer Verlegeeinrichtung (4) und einer Kontaktwalze (5), die der Trommel (6) im Fadenlauf vorgeordnet sind, wobei die Kontaktwalze (5) in Umfangskontakt mit der Spule (15) steht, die sich auf der in Betrieb befindlichen Spulspindel (9 oder 10) bildet, und der Abstand zwischen der Achse (13) der Kontaktwalze (5) und der Achse (11) der in Betrieb befindlichen Spulspindel (9) im Sinne einer Vergrößerung entsprechend dem wachsenden Durchmesser der Spule (15) veränderbar ist, dadurch gekennzeichnet, daß für die Drehung der Trommel (6) eine Regeleinrichtung (20) vorgesehen ist, daß die Spulmaschine (3) eine Einrichtung zur Ermittlung der Geschwindigkeit des Fadens (1) und eine Einrichtung zur Ermittlung der Drehzahl der in Betrieb befindlichen Spulspindel (9) aufweist, und daß die Regeleinrichtung (20) eine Recheneinheit (21) zur Berechnung des jeweiligen aktuellen Durchmessers der sich auf der in Betrieb befindlichen Spulspindel (9 oder 10) bildenden Spule (15) und der jeweiligen aktuellen Winkelgeschwindigkeit zwischen dein Anfang und dem Ende eines jeden Rechenzyklusses als Regelgrößen für die Drehung der Trommel (6) über die gesamte Spulreise aufweist.Spooling machine for a continuously running thread (1), with a rotatable drum (6) on which two drivable winding spindles (9, 10) are rotatably mounted, with a laying device (4) and a contact roller (5) which the drum (6 ) are arranged in the thread path, the contact roller (5) being in circumferential contact with the bobbin (15) which forms on the winding spindle (9 or 10) in operation, and the distance between the axis (13) of the contact roller (5 ) and the axis (11) of the winding spindle (9) in operation can be changed in the sense of an increase in accordance with the growing diameter of the coil (15), characterized in that a control device (20) is provided for the rotation of the drum (6) that the winding machine (3) has a device for determining the speed of the thread (1) and a device for determining the speed of the winding spindle (9) in operation, and that the control device (20) has a computing unit eit (21) for calculating the respective current diameter of the bobbin (15) forming on the operating spindle (9 or 10) and the respective current angular velocity between the beginning and the end of each computing cycle as control variables for the rotation of the drum ( 6) over the entire winding cycle. Spulmaschine nach Anspruch 1, dadurch gekennzeichnet, daß als Recheneinheit (21) ein Mikroprozessor vorgesehen ist.Winding machine according to claim 1, characterized in that a microprocessor is provided as the computing unit (21). Spulmaschine nach Anspruch 1, dadurch gekennzeichnet, daß die Einrichtung zur Ermittlung der Geschwindigkeit des Fadens (1) eine Einrichtung zur Erfassung der Drehzahl der Kontaktwalze (5) aufweist.Winding machine according to claim 1, characterized in that the device for determining the speed of the thread (1) has a device for detecting the speed of the contact roller (5). Spulmaschine nach Anspruch 1, dadurch gekennzeichnet, daß die Einrichtung zur Ermittlung der Geschwindigkeit des Fadens (1) und die Einrichtung zur Ermittlung der Drehzahl der in Betrieb befindlichen Spulspindel (9 oder 10) auch als Regeleinrichtung (20) für die Drehung der Trommel (6) ausgebildet sind.Winding machine according to claim 1, characterized in that the device for determining the speed of the thread (1) and the device for determining the speed of the winding spindle (9 or 10) in operation also as a control device (20) for the rotation of the drum (6 ) are trained. Spulmaschine nach Anspruch 1, dadurch gekennzeichnet, daß die Kontaktwalze (5) relativ zu der Achse (7) der Trommel (6) und damit zu der jeweiligen Spulspindel (9 oder 10) ausweichbar gelagert ist, und daß eine Einrichtung zur Steuerung einer konstanten oder gesteuert veränderlichen Anpreßkraft der Kontaktwalze (5) auf die in Betrieb befindliche Spulspindel (9 oder 10) vorgesehen ist.Winding machine according to Claim 1, characterized in that the contact roller (5) is mounted so that it can be deflected relative to the axis (7) of the drum (6) and thus to the respective winding spindle (9 or 10), and that a device for controlling a constant or controlled contact pressure of the contact roller (5) on the operating winding spindle (9 or 10) is provided. Spulmaschine nach einem der vorangehenden Ansprüche 1 bis 5, dadurch gekennzeichnet, daß die Recheneinheit (21) einen Speicher zur Aufnahme einer Wertetabelle für den Sollwert des Drehwinkels der Trommel (6) in Abhängigkeit vom Durchmesser der Spule (15) aufweist.Winding machine according to one of the preceding claims 1 to 5, characterized in that the computing unit (21) has a memory for receiving a table of values for the setpoint of the rotation angle of the drum (6) as a function of the diameter of the spool (15). Verfahren zur Regelung einer Spulmaschine (3) für einen kontinuierlich auflaufenden Faden (1), bei dem eine Trommel (6), auf der zwei antreibbare Spulspindeln (9, 10) drehbar gelagert sind, gegenüber einer Kontaktwalze (5) gedreht wird und der Faden (1) mit einer Verlegeeinrichtung (4) über die Kontaktwalze (5) auf die Spule (15) aufgewickelt wird, wobei der Abstand zwischen der Achse (13) der Kontaktwalze (5) und der Achse (11 oder 12) der in Betrieb befindlichen Spulspindel (9 oder 10) im Sinne einer Vergrößerung entsprechend dem wachsenden Durchmesser der Spule (15) verändert wird, dadurch gekennzeichnet, daß die Trommel (6) kontinuierlich mit sich von Rechenzyklus zu Rechenzyklus ändernden Winkelgeschwindigkeiten gedreht wird.Method for controlling a winding machine (3) for a continuously running thread (1), in which a drum (6) on which two drivable winding spindles (9, 10) are rotatably mounted is rotated relative to a contact roller (5) and the thread (1) with a laying device (4) over the contact roller (5) on the spool (15), the distance between the axis (13) of the contact roller (5) and the axis (11 or 12) of the in operation Spool spindle (9 or 10) is changed in the sense of an enlargement in accordance with the growing diameter of the spool (15), characterized in that the drum (6) is rotated continuously with angular speeds changing from one computing cycle to the next. Verfahren nach Anspruch 7, dadurch gekennzeichnet, daß Rechenzyklen Verwendung finden, die in über die Spulreise konstanten Zeitabständen, insbesondere in 10 msec, wiederholt werden.Method according to claim 7, characterized in that computing cycles are used which are repeated at time intervals constant over the winding cycle, in particular in 10 msec. Verfahren nach Anspruch 7, dadurch gekennzeichnet, daß eine Änderung der aktuellen Winkelgeschwindigkeit der Drehung der Trommel (6) für jeden Regelzyklus in Abhängigkeit eines konstanten Zuwachses des Durchmessers der Spule (15) erfolgt.Method according to Claim 7, characterized in that the current angular speed of the rotation of the drum (6) is changed for each control cycle as a function of a constant increase in the diameter of the coil (15). Verfahren nach Anspruch 7, dadurch gekennzeichnet, daß die jeweilige aktuelle Winkelgeschwindigkeit der Drehung der Trommel (6) aus dem jeweils vorangegangenen Regelzyklus errechnet wird.Method according to Claim 7, characterized in that the respective current angular velocity of the rotation of the drum (6) is calculated from the previous control cycle.
EP96116021A 1995-10-16 1996-10-07 Winding apparatus for a continuously running thread Expired - Lifetime EP0768271B1 (en)

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DE19538480A DE19538480C2 (en) 1995-10-16 1995-10-16 Spooling machine and method for winding a continuously running thread on a spool

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DE19538480C2 (en) 2001-10-25
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TW316892B (en) 1997-10-01
ATE189666T1 (en) 2000-02-15
EP0768271B1 (en) 2000-02-09
DE59604407D1 (en) 2000-03-16
JP3523429B2 (en) 2004-04-26
KR970020917A (en) 1997-05-28
US5785265A (en) 1998-07-28
DE19538480C1 (en) 1997-05-07

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