WO2001028907A2 - Procede et dispositif pour enrouler un fil sur une bobine - Google Patents

Procede et dispositif pour enrouler un fil sur une bobine Download PDF

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Publication number
WO2001028907A2
WO2001028907A2 PCT/CH2000/000552 CH0000552W WO0128907A2 WO 2001028907 A2 WO2001028907 A2 WO 2001028907A2 CH 0000552 W CH0000552 W CH 0000552W WO 0128907 A2 WO0128907 A2 WO 0128907A2
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WO
WIPO (PCT)
Prior art keywords
stroke
traversing
winding
speed
thread
Prior art date
Application number
PCT/CH2000/000552
Other languages
German (de)
English (en)
Other versions
WO2001028907A3 (fr
Inventor
Werner Klee
Heike Syndikus
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
Priority claimed from DE1999150285 external-priority patent/DE19950285A1/de
Application filed by Maschinenfabrik Rieter Ag filed Critical Maschinenfabrik Rieter Ag
Priority to DE50011986T priority Critical patent/DE50011986D1/de
Priority to EP00965706A priority patent/EP1222133B1/fr
Priority to JP2001531706A priority patent/JP2004500295A/ja
Priority to AU76376/00A priority patent/AU7637600A/en
Priority to AT00965706T priority patent/ATE314301T1/de
Publication of WO2001028907A2 publication Critical patent/WO2001028907A2/fr
Publication of WO2001028907A3 publication Critical patent/WO2001028907A3/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H54/00—Winding, coiling, or depositing filamentary material
    • B65H54/02—Winding and traversing material on to reels, bobbins, tubes, or like package cores or formers
    • B65H54/28—Traversing devices; Package-shaping arrangements
    • B65H54/2827—Traversing devices with a pivotally mounted guide arm
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H54/00—Winding, coiling, or depositing filamentary material
    • B65H54/02—Winding and traversing material on to reels, bobbins, tubes, or like package cores or formers
    • B65H54/28—Traversing devices; Package-shaping arrangements
    • B65H54/2884—Microprocessor-controlled traversing devices in so far the control is not special to one of the traversing devices of groups B65H54/2803 - B65H54/325 or group B65H54/38
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H54/00—Winding, coiling, or depositing filamentary material
    • B65H54/02—Winding and traversing material on to reels, bobbins, tubes, or like package cores or formers
    • B65H54/28—Traversing devices; Package-shaping arrangements
    • B65H54/32—Traversing devices; Package-shaping arrangements with thread guides reciprocating or oscillating with variable stroke
    • B65H54/325—Traversing devices; Package-shaping arrangements with thread guides reciprocating or oscillating with variable stroke in accordance with growth of the package
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H54/00—Winding, coiling, or depositing filamentary material
    • B65H54/02—Winding and traversing material on to reels, bobbins, tubes, or like package cores or formers
    • B65H54/38—Arrangements for preventing ribbon winding ; Arrangements for preventing irregular edge forming, e.g. edge raising or yarn falling from the edge
    • B65H54/381—Preventing ribbon winding in a precision winding apparatus, i.e. with a constant ratio between the rotational speed of the bobbin spindle and the rotational speed of the traversing device driving shaft
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H54/00—Winding, coiling, or depositing filamentary material
    • B65H54/02—Winding and traversing material on to reels, bobbins, tubes, or like package cores or formers
    • B65H54/38—Arrangements for preventing ribbon winding ; Arrangements for preventing irregular edge forming, e.g. edge raising or yarn falling from the edge
    • B65H54/385—Preventing edge raising, e.g. creeping arrangements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/30—Handled filamentary material
    • B65H2701/31—Textiles threads or artificial strands of filaments

Definitions

  • the invention relates to a method for winding a thread on a bobbin.
  • EP 453 622 B1 proposes a device with a thread guide and a thread guide carrier, the carrier being guided in a groove.
  • the device comprises a drive motor and a programmable controller. While the thread guide is near a reversal point, the motor is operated with a higher current than the final current. The current required for operation is below the nominal current when the thread guide is in the remaining area.
  • the basic programs are stored in the control for different winding sections. The control system calculates the paths, speeds and accelerations for the motor movement based on the winding laws that are used. Parameters that can be saved include the basic stroke and the basic stroke variation for producing soft coil edges.
  • a stepper motor works as a drive motor between the center of the stroke and a reversal point against a torsion spring.
  • the spring constant is increased, the current supply to the stepper motor is increased and the frequency of its control pulses is reduced.
  • the motor should therefore come to a standstill at the reversal point.
  • Appropriate monitoring is not planned.
  • a sensor is provided in the middle of the stroke, which enables the detection of errors at this point in the traversing stroke.
  • a traverse stroke is always controlled from this point using a pulse sequence. A precise determination of the reversal points is not apparent from the scripture.
  • the stepper motor is a spring-mass system that tends to vibrate when the position changes rapidly and executes uncontrollable movements.
  • the reference or zero position is passed twice during a movement of the thread guide The positioning accuracy outside of the zero position is not defined. At higher speeds of 1000 m / min production speed, for example, this method can therefore no longer work with the required accuracy
  • EP 248 406 A2 describes a traversing device which has means for calculating the stroke in accordance with the number of rotations of the coil and the winding ratio in accordance with the package diameter.
  • this invention also does not show any solution to the problems at the coil edges
  • WO 98/42606 discloses a method for controlling a traversing device driven by a stepping motor, and a traversing device.
  • the position of a traversing thread guide which is moved back and forth within a traversing stroke is determined by the position of a rotor of the stepping motor, the rotor being located within a stand of the stepping motor Moved with multiple windings
  • the aim of the process is to guide the traversing thread guide in the reversing area with optimal utilization of the stepper motor.At the same time, the traversing thread guide in the reversing stroke area should be driven with as little vibration as possible.This is achieved in that the movement of the rotor is controlled by a stator flow which is controlled by a by means of a flow control device generated standing voltage is determined.
  • WO 99/05055 discloses a method and a device by means of which a thread should be able to be positioned precisely within a traversing stroke. Furthermore, optimal use of the electric motor (stepping motor) should be ensured for each traversing stroke. There is a constant comparison between the actual position and the target position of the thread guide. If there is a discrepancy between the actual position and the target position, a difference signal is generated to control the stepper motor. The target position is determined exclusively by the electric motor.
  • the amplitude of the current of the electric motor is given by the frequency signal. If a deviation is detected, the stepper motor immediately and directly reacts according to this method, so that the deviation error of the traversing thread guide is corrected immediately.
  • the prior art also includes the document DE 198 07 030 A1, which discloses a method and a device for winding a continuously running thread into a bobbin formed on a sleeve.
  • the traversing thread guide is accelerated to a guiding speed at one end of the stroke within a reversing distance by a finite acceleration and braked from the guiding speed by a finite deceleration at the opposite end of the stroke within a further reversing distance, and vice versa.
  • the traversing stroke defined by the reversal points is obtained by adding the three sections: reversing section (acceleration), linear section and reversing section (deceleration).
  • the acceleration and deceleration of the thread guide is controlled in such a way that the lengths of the reversal paths and thus the thread deposit at the ends of the bobbin change within the reversal paths.
  • the thread reversal is to be initiated sooner or later beginning at the end of the traversing stroke, as a result of which the thread is deposited at different angles to the end face of the bobbin. There should be an even distribution of the thread behind the turning point.
  • the sequences of movements of the thread guide on the reversal paths are predetermined by a predetermined time program sequence.
  • This known method also enables the acceleration and deceleration of the thread guide to be controlled as a function of the crossing angle, the bobbin diameter and the traversing stroke within the reversal paths
  • the method can also be used to keep the length of the reversing distances in the reversing areas constant, regardless of the traversing speed Selection of a breath stroke can be changed
  • DE-A-198 20 464 shows a motor construction that has been specifically designed for use in a rotary actuator
  • the precision winding is created by a constant ratio between the bobbin speed and the speed of the thread maneuvering.This keeps the turns ratio the same during the entire winding process.However, the thread crossing angle decreases with increasing bobbin diameter.
  • the bobbin has good run-off properties and generally has a significantly longer run length with the same bobbin volume decreasing crossing angle an increase in the winding density towards the outside, which can lead to an uneven penetration of the dyes in the dyeing
  • the step precision winding is a precision winding in steps. After each step, the crosshair angle is returned to the original number of degrees, whereby an approximately constant crossing angle is achieved and the winding ratio is reduced in stages. The almost constant crossing angle improves the stability of the package and a Uniform density guaranteed
  • the defined thread section of the precision winding prevents image zones and enables a high winding density.
  • the resulting bobbin has good running properties and a significantly increased running length compared to the wild winding
  • DE-B-2649780 explains the basic principles of step precision winding by means of computer-controlled drives, but for a winder with a friction roller drive.
  • the explanation of similar principles can also be found in EP-A- 1 18173, which mainly deals with the use of a frequency-controlled motor by means of a frequency converter for the oscillation
  • the US-B-4,515,320 shows the required relationships between the crossing angle of the package (coil) and the turn ratio as a function of the coil diameter.
  • the drive technology then proposed with a servo-controlled belt drive connection between the coil mandrel and the oscillation is, however not suitable for effective control at higher winding speeds
  • EP 629 174 B1 in particular discloses a method which is conventional today and a corresponding device for winding a thread with a step precision winding. During a winding trip, jumps from a higher turn ratio to a lower turn ratio take place if the crossing angle for the given turn ratio reaches a lower limit The jump height is limited by an upper limit, so that unacceptable sudden changes in the winding conditions are avoided
  • a thread traversing with which a step precision winding can be implemented is known from WO 99/65810, in particular in combination with a control according to WO 00/24663.
  • the software-oriented control of the thread traverser consists of a "fixedly specified" part, which cannot (or should not) be influenced by the user and a part requested by the user, which preferably consists of certain winding parameters. For example, crossing angles, bandwidth, breakage table, stroke breathing and stroke course can be entered as winding parameters.
  • the invention provides a winding unit that comprises at least one winding mandrel and a traverse, the traversing being provided with a drive that can be controlled in such a way that the stroke width is variable over the winding travel.
  • the invention is particularly suitable for use in connection with a Swivel drive designed, the movements of a reciprocating yarn guide are determined by the movements of a motor rotor and the motor is provided with a control that allows the rotor to rotate between reversal points that have an angle of rotation distance of less than 360 ° (preferably less than 180 ° ) exhibit
  • the traversing drive is controlled as a function of the coil speed and a predeterminable winding ratio, the effective winding ratio being selected by the control from a large number of possible winding ratios, both as a function of parameters which influence the crossing angle and as a function of the effective stroke width
  • the stroke width to be observed by the traversing is specified, the stroke width to be specified being defined with respect to a reference (preferably with respect to the center of the stroke), which has a predetermined, preferably fixed, orientation in the environment defined by the winding unit, in particular with respect to the winding mandrel having.
  • target reversal points are defined as a function of the specified stroke width.
  • the target reversal points can preferably be changed or corrected in order to promote compliance with the specified stroke width.
  • the average speed of the thread guide over one stroke is derived from the spool speed on the basis of the effective turn ratio and the effective stroke width.
  • the movement of the thread guide is controlled over a stroke in accordance with a predetermined movement characteristic (profile), whereby an average speed of the thread guide predetermined by the control is maintained.
  • the movement characteristic preferably defines acceleration values and / or speed values which are given at predetermined points the stroke must be observed.
  • the integral of the average speed of the thread guide specified by the control is maintained.
  • the optimal movement characteristic can be determined empirically and can (preferably is) be changeable over the winding cycle (i.e. between the beginning and the end of the formation of a specific coil).
  • the invention comprises a method for operating a machine that winds a thread, in particular a winder, wherein the thread is guided alternately between two reversal points within a traversing stroke by means of a thread guide of a traversing device, in order to move on a rotating one Coil to be misplaced.
  • a solution to the task is aimed at determining the reversal points or turning points of a thread guide in the course of the winding travel, or that they are observed exactly.
  • the method for operating the thread winding machine, in particular winding machine that an end point of the reversal of the thread guide is determined at a reversal point and the effective traversing stroke (the effectively determined stroke width) is corrected, preferably shortened or lengthened, in a subsequent stroke, depending on the position of the end point, the target is -Changing stroke, which was determined depending on the specified stroke width, remains constant (unchanged)
  • servo drives are used for driving a traversing thread driver, which essentially have two controllers (load observers with status / Position controller and current controller)
  • the position of the motor rotor, and thus the thread guide can be determined by means of a suitable measuring device.
  • suitable measuring device Such devices are commercially available.
  • Known encoders or absolute value transmitters are suitable
  • the inaccuracy of the reversal can be counteracted by equipping and expanding the control loop with a kind of "memory function". If there is a passage at a reversal point within a traversing stroke, the position actual Reversal point detected when the thread guide changes direction.This position value is saved and influences the control of the drive in such a way that the traversing stroke, i.e. the effective stroke of the thread guide (shortening or lengthening), is changed depending on the position of this position value Sequence of the winding trip exactly defined edges of the coil, since the errors are averaged or eliminated by the correction according to the invention
  • the (effective) traversing stroke is advantageously corrected as a function of the difference between the end point and the reversal point.
  • the two reversing points of a traversing stroke are regarded as target values and the effective end points as actual values.
  • the resulting difference is a target-actual deviation, which controls the effective traverse stroke accordingly, so that the desired and precise coil edges are created
  • the target reversal points are therefore changed depending on the effective reversal points (actual values), if necessary, in order to be able to maintain a target stroke width
  • the present invention aims to make the end points of the effective traversing stroke repeatable at predetermined locations viewed as a whole, the position of the thread guide when depositing a thread on a spool is important - as a further difference
  • the difference between the actual end point and the target reversal point is averaged over several strokes.
  • This averaging can be carried out continuously, for example, using a moving averaging, which means that a correction only has to be made if, for example, a significant deviation or drift in the mean value is found
  • the method provides that the traversing stroke is corrected in any stroke value of the winding travel. This method is variable because the correction is only carried out if certain conditions are met for controlling the drive.
  • the control then, for example, automatically and automatically determines when the traversing stroke is shortened or extended.
  • a user can specify that the traversing stroke is corrected, for example, after a definable number of double strokes becomes
  • the traversing stroke can be corrected in the stroke immediately following
  • an (effective) run-on error can be calculated.
  • the run-up error can be eliminated in the sense that the effective stroke width matches the target Stroke width is adjusted This is possible because the reversal points are not "fixed", but can be determined by the control depending on the desired stroke width
  • the tracking error can be taken into account in the control as a function of the traversing speed and / or acceleration.
  • the trailing error can be stored, preferably in a so-called table as a function of the traversing speed and / or the acceleration. These tables can be used for a to calculate the following trajectory
  • the stroke width is advantageously varied in the course of the bobbin travel, but the stroke width can also can be varied, for example, by means of a predefinable stroke breathing, which has a positive effect on the thread distribution in the stroke reversal and thus on the spool hardness distribution
  • the method is characterized in that the course of the desired stroke reversal points can be specified for a winding travel and the specified course is influenced, that is to say corrected, as a function of the detected deviations (at the reversal points)
  • the course of the desired stroke reversal points is preferably determined by entering a stroke width course
  • a thread-winding machine in particular a winder, with a traversing device, the thread being guided alternately between two reversal points within a traversing stroke by means of a thread guide of a traversing device, in order to be laid on a rotating spool , and the traversing device has an oscillating drive.
  • This machine is characterized in that the machine has a detection device for detecting an end point when the thread guide reverses the stroke and a control device for correcting the effective traversing stroke, preferably shortening or lengthening, depending on the position of the end point
  • the arrangement enables compliance with a predetermined (target) stroke width
  • the aim of the invention can also be to enable, in particular, a precision winding or step precision winding, taking into account a preferred or predeterminable packaging form of a bobbin.
  • the drive of the thread guide or the traversing device can be controlled in such a way that the existing coil speed or a change in the coil speed the turn ratio is maintained almost exactly
  • the turn ratio results from the quotient of the coil speed and the number of double strokes (as a divisor)
  • By observing the turn ratio at a specific and current speed of the coil is the time for one stroke fixed and defined on the basis the drive or servo drive of the thread guide can be precisely controlled and driven in these sizes.
  • the stroke width and / or the turns ratio are varied during the bobbin travel. If these sizes change, this has the direct consequence that the drive also receives completely new control commands or values. This also applies to a change in the coil speed, which is directly related to the turn ratio.
  • the effective stroke width can be varied during the bobbin travel.
  • One possibility is to continuously change the stroke width during the winding cycle. With this modulation, a defined packing geometry e.g. conical coils are generated.
  • Another variant is stroke breathing, in which the effective stroke width is changed periodically in order to neglect the accumulation of thread deposit, which can occur due to the acceleration and deceleration in the stroke reversal. This only has an influence on the uniformity of the thread distribution over the stroke and on the shape of saddles (hard bobbin edges).
  • both variants can be combined with each other.
  • the parameters for the stroke routing and / or stroke breathing can be entered by an operator, for example.
  • the thread laying on the bobbin is preferably carried out as a function of the bobbin diameter and / or the time (sequence) and / or the number of strokes and / or the stroke width.
  • fixed or variable recipes are stored in a computer or memory.
  • the stroke breathing can be parameterized, among other things. in at least three sizes: stroke period, stroke amplitude and stroke distribution.
  • the stroke period describes the length of the cycle of one stroke breathing (e.g. 100 to 4000 traverse strokes).
  • the increase or decrease in the nominal stroke can be determined using the stroke amplitude (e.g. in oo of the nominal stroke).
  • the ratio of the stroke amplitude to the stroke amplitude is expressed by means of the stroke distribution (unit:% of the period).
  • These parameters can be length-independent as well as speed-independent. In a further embodiment, it is also possible to repeat not only a combination of these three parameters, but also with retrieve at least one other combination alternately.
  • the stroke routing is preferably defined by reference points or reference points which relate to the diameter, and interpolation is carried out in between. Instead of the diameter, the time or a speed can be used as an adjustment parameter.
  • a speed profile of the thread guide or the traversing device is specified between the reversal points of the stroke.
  • the speed profile serves as a setpoint for controlling the drive. Due to the course of the profile, for example through support points or points, a predeterminable coil shape is wound up. The course of the profile affects in particular the thread placement and thus the bobbin hardness distribution. Since these properties are also influenced by other operating parameters, several profiles of the speed can be stored in a control computer of the drive and made available for retrieval.
  • the speed profile is formed independently of the stroke widths during a winding cycle and / or is based on an average laying speed. Since bobbins of different lengths can be produced on the thread-winding machine, the speed profile, which is independent of the stroke width, makes it possible, so that many bobbins of different lengths can be used on the machine.
  • the reference to an average laying speed also makes the speed profile independent, since no absolute speeds e.g. be driven by the thread guide.
  • the relative speed or the relative speed profile generally gives the same or similar coil shapes on different long coils.
  • the average laying speed is defined or ascertained by the stroke width and the stroke time or number of double strokes which can be determined by the turns ratio and the spool speed. Alternatively, it can be said that the average laying speed is given by the time integral of the speed over a stroke. The speed curve must therefore be over an entire stroke contains exactly the average speed. Based on these values, specifications and accelerations for the drive can be determined or calculated
  • a certain stroke distance is immediately assigned to a certain number of spool revolutions or fractions of spool revolutions.
  • a certain stroke distance is assigned to a pulse of a desired stroke counter for a certain turn ratio and a predetermined spool speed
  • the desired stroke counter is increased by a certain value in the case of a pulse.
  • a tachometer on a coil delivers a certain number of pulses per coil revolution.
  • Each pulse of the tachometer allows a very specific stroke path for a selected turn ratio assign.
  • This target stroke counter is consequently increased for each speedometer pulse by a value determined by the current turn ratio.
  • the value of the desired stroke counter is fed to a controller with a value of an actual stroke counter of the drive.
  • the drive or servo drive of the traversing device also has an identical or identical counter.
  • This actual stroke counter counts the number of strokes carried out with the same resolution.
  • the actual stroke counter and target stroke counter serve as a control and control variable for a controller.
  • the desired laying speed is determined as the manipulated variable of this controller, or a correction of this speed is determined.
  • the drive of the traversing device or of the thread guide is controlled by means of the average laying speed and the stroke length (in one stroke).
  • the thread guide is accelerated or decelerated, so that the bobbin is provided with a (step) precision winding.
  • the method provides that the modulation of the stroke width is used to implement end bead formation within the stroke and / or to form a thread reserve, in particular outside the stroke, with the speed of the thread guide being braked to zero can.
  • a thread-winding machine for carrying out the method shown is characterized by an input of operating data, a coil tachometer, a nominal stroke counter, an actual stroke counter on the drive of the traversing device and a computing and control unit for determining an acceleration value while maintaining a predetermined winding ratio at a certain predetermined coil speed.
  • the invention allows other types of winding to be used in addition to the (step) precision winding.
  • the middle one Laying speed changed continuously as a function of time (wobble with wild winding) or changed as a function of the coil diameter in discrete steps (ribbon free).
  • a combination of the two methods is also possible.
  • the possibility of varying the stroke width is also used to position the thread within the stroke (e.g. to form an end bead) or outside the stroke (e.g. to form a thread reserve).
  • This basic mechanism is already known from patent specification EP 31 1 827. The main difference is that the thread is caught by the thread guide when it is drawn in, moves to the positioning position, is caught by the sleeve, forms a defined thread reserve and is then moved into the lifting area. The thread guide then acts as a traversing thread guide itself.
  • the traversing thread guide is stopped at a defined position within the stroke in order to form the end bead.
  • the thread guide is then returned to the positioning position so that the thread can be caught on a new empty tube.
  • the thread never leaves the thread guide.
  • Positioning times can thus be reduced to a minimum or set to a defined, reproducible value.
  • This system is particularly suitable for bobbins with a mandrel displacement in which the position of the end bead corresponds to that of the positioning position before catching, since the thread wrap can then be reduced to a minimum.
  • FIG. 1 shows a schematic calculation of deviations in the reversal of the thread guide at the reversal point
  • FIG. 2 shows an alternative to FIG. 1,
  • Figure 3 is a schematic representation for calculating an average
  • FIG. 5 shows an example for the parameterization of a lifting breathing
  • FIG. 6 shows a representation for a speed profile
  • FIG. 7 shows an example of a combined parameterization of the lifting breathing
  • Figure 8 shows another example of a combined parameterization of the
  • Figure 9 shows an example of a parameterization of the continuous
  • FIG. 10 shows a copy of FIG. 1 from WO 99/65810
  • FIG. 11 shows a copy of FIG. 2 from WO 99/65810
  • FIG. 12 shows a copy of FIG. 3 from WO 99/65810
  • FIG. 13 shows a copy of FIG. 4 from WO 99/65810
  • FIG. 14 shows a copy of FIG. 5 from WO 99/65810
  • FIG. 15 is a schematic representation of the "winder environment" for the
  • FIG. 10 schematically shows a cross section through a winding machine 1, in which a thread F is built into a bobbin 3 by means of a traversing device 2.
  • the coil 3 is built up on a sleeve 4, which is received by a coil mandrel 14.
  • the bobbin 3 is driven either by a drive of the bobbin mandrel 14 (not shown) or by means of a friction roller or contact roller 5.
  • the friction or contact roller (when the bobbin mandrel is driven) also has the function of threading an oscillating thread guide 7 here Called pointer 7 to take over.
  • the pointer 7 is arranged between or in front of a guide ruler 6 and the friction roller or tachometer roller 5. Additions to the description of the pointer are contained in our patent application CH 1 1 19/99 dated June 16, 1999.
  • the coil 3 with the sleeve 4 is shown in the working position, with an empty sleeve 4.1 located at the beginning of a coil construction in the working position on the friction or.
  • Speedometer roller 5 is shown attached, while 4.2 empty sleeves are shown in the waiting position.
  • These two waiting positions are the starting positions for a rotary movement of a so-called turret drive, shown by the dash-dotted line, by means of which the empty sleeves on the distribution roller or the full spool 3.1 are moved away from the distribution roller into a removal position.
  • the pointer 7 is fastened in a rotationally fixed manner on the motor shaft 9 of a motor 8 with the larger and heavier end, the motor 8 being controlled by a controller 12 in accordance with a lifting program for the construction of a coil. Such a program is entered into the control via an input device 13.
  • a movement monitoring device 16 is provided, consisting of a signal transmitter 10 which is fixedly connected to the motor shaft 9 and a signal receiver 11 which is arranged separately therefrom and which outputs its received signals to the controller 12.
  • the pointer drive can be designed as a servo drive that includes an encoder that generates at least one pulse row during operation.
  • the encoder can, for example, be provided with two pulse tracks, each track being formed to generate 1024 pulses per revolution.
  • 11 shows the winding machine 1 in viewing direction I, the input device 13 and the controller 12 not being shown for the sake of simplicity. 11 is to show firstly that the pointer 7 can not only be moved back and forth within the stroke H, but that the thread F can be stopped on the one hand for changing the bobbin by means of the pointer 7 in the position C in order to to form a so-called end bead of the finished coil.
  • the pointer 7 for a thread feed at the start of a winding process or when changing the bobbin in the positions A and B outside the stroke H can be stopped (or moved at a reduced speed), namely in position A, around the thread in one position to keep in which this can be caught by a catch knife or sleeve notch of a next following sleeve, on the other hand in position B where the thread can form in a reserve winding on the sleeve end.
  • the thread F is then guided by the pointer 7 into the stroke H and further shifted back and forth within the stroke.
  • FIG. 12 additionally shows a speed curve of the pointer 7.
  • the speed curve shown differs depending on the type of coil construction, which is why the speed curve shown does not constitute a restriction for the possible speed curve of the pointer 7.
  • FIG. 13 shows a variant of the guide neales 6, on the one hand by the guide guide 6 3 compared to the guide 6 of FIGS.
  • FIG. 14 shows diagrammatically the axis of rotation D of the pointer 7 and the reversal points U1, U2 of a specific traversing movement of the thread guide 15 with stroke length B.
  • the longitudinal axis ZL of the pointer 7 must be pivoted about the axis D by an angle ⁇ in order to produce the traversing movement
  • the design of the coil should make it possible to select a variable angle of rotation as a reversal point according to the control system. This movement can be programmed into the control system 12, the reversal points being defined, for example, with respect to a reference line R.
  • the sensor 10 (FIG.
  • the controller 12 can in principle be designed such that the motor 8 reverses its rotation by the controller by means of a comparison with a predetermined reversal point (U1 or U2).
  • the actual position of the pointer 7 is always known via the motion monitoring device 16 and can be obtained from the controller 12 can be compared with the predetermined reversal points to make the reversal each the desired position
  • the reversal points U1, U2 can be changed (within predetermined limits) via the input device 13, as will be explained in more detail below. This is indicated schematically by the dashed lines in FIG. 14.
  • the rotation speed of the arm has to be changed, e.g. if the linear speed of the thread guide has to remain constant.
  • the set-up cycle also includes, for example, the definition of a thread-catching position associated with it, as already described. For example, the operator 12 is prompted by the controller 12 to enter the required parameters before a winding cycle can be started
  • FIG. 15 schematically shows a part of a coil mandrel 50 with an axis of rotation (longitudinal axis) DA and a sleeve 51, which is held at a predetermined location in the longitudinal direction of the dome by suitable means (not shown).
  • a coil (not shown) is to be built up on the sleeve within a predetermined maximum stroke width HB1.
  • This stroke width is defined in relation to a “reference data” RD, which in this example is located in the middle of the stroke (although this is not essential)
  • FIG. 14 is preferably changed to coincide with the reference data RD (FIG. 15) of the winder environment - but the two references must in any case have a predetermined relationship to one another, which must then be taken into account when programming the control of the traversing
  • the coil edges are ideally at the limits of the predetermined stroke width HB1. Still will preferably not always wound up to these outer limits, since the risk of material accumulation in the edge areas of the coil is high. It is therefore known, when forming a cylindrical coil, to change the stroke width periodically during the winding travel (stroke breathing) - indicated schematically in FIG.
  • the turns ratio can be conventionally represented by the following formula
  • n (DH) The number of double strokes n (DH) can, however, be represented by the following formula
  • V (CH) the average speed of the thread guide over a single stroke
  • the suitable average thread guide speed V (CH) can be derived from the bobbin speed.
  • the three functions are : 1.
  • the first winding technology function This function includes the calculation routine which was explained with reference to FIGS. 10 to 15 and the formulas 1 to 5.
  • the “products” of this function are, on the one hand, the selection of a suitable turn ratio in order to be able to maintain the bandwidth for the crossing angle ß, and on the other hand the determination of a suitable one average thread feeder speed in order to be able to maintain the selected winding ratio.
  • V (CH) V (SP tan (ß / 2)
  • This function defines the movement characteristics of the thread guide and the thread within and at the end of the stroke.
  • a suitable characteristic cannot be determined on the basis of theoretical considerations, but must be determined empirically using suitable methods. Nevertheless, it is possible to determine certain "corner points" within the stroke Define “profiles”, which are then filled out on the basis of the empirical results as a function of the data for the individual case. Examples of such a procedure within the stroke are explained below with reference to FIGS. 5 to 9. It is important, however, that the first function determined criteria are observed - they serve as critical parameters for the design of the movement characteristics. This applies in particular (but not exclusively) to the maintenance of the average thread feeder speed. It is therefore advantageous to use the desired movement characteristics as a (mathematical) function d to define the average thread feeder speed 3 Motor control function
  • This function requires the translation of the results of the first and second functions into control signals which cause the corresponding movements of the rotor from the oscillation motor
  • Box F1 indicates a computing routine which emits a control signal which corresponds to the required average yarn feeder speed.
  • Box F2 indicates an arithmetic routine which uses the average yarn feeder speed and a predetermined profile to indicate the movement characteristics of the Define the thread guide (or the motor rotor)
  • Box F3 pointed to the arithmetic routine hm, which convert the defined movement characteristics into suitable control signals for the selected drive motor AM, in order to allow pointer Z to oscillate in the best possible way over the set stroke width (or through the corresponding stroke rotation angle)
  • a first feedback of this type is indicated in FIG. 16 with the sensor system S for the position of the pointer Z (or its drive AM), a comparator VG1 and a setpoint adjuster SW1 for the pointer position, whereby a system correction can be derived from the comparison Feedback is indicated with a comparator VG2 and a setpoint adjuster SW2
  • the monitoring is carried out as part of the first function.
  • the correction can take the form of a correction of the determined average thread feeder speed (by means of VG1) and or the setpoints for the stroke width (by means of VG2).
  • the devices which enable such monitoring are carried out below 1 to 4 are described, whereby the aforementioned problems of maintaining specified reversal points for the thread guide must be dealt with.
  • the thread guide Given the high double-stroke numbers required in a high-speed winder, it cannot be expected that the thread guide will easily reach the theoretical reversal point (e.g. U1 or U2, Fig. 14) first comes to a standstill and then moves in the opposite direction.
  • the reversal of the thread guide movement is always associated with a certain error. It is therefore important to take this fact into account in order to keep its importance for the bobbin construction within acceptable limits ten, such limits being defined by the user of the machine (depending on their own quality requirements)
  • FIG. 1 shows a possibility of calculating the deviations of the end points of a thread guide during the reversal at a reversal point.
  • An encoder 110 a drive (not shown here) supplies pulses to an evaluation device, which are evaluated, for example, using a feedback method.
  • the evaluation device 1 12 supplies a target Reversal point, which is supplied as the actual stroke reversal point I to a memory, preferably flash memory 1 13, this actual value I is forwarded to a computer 1 14.
  • the computer 114 which is designed as a control computer, both the traversing speeds V C H of the thread guide and the exact stroke reversal point, which is used as the setpoint S, are stored.
  • FIG. 2 shows an alternative to FIG. 1 and comprises an encoder 111, which delivers its signal to an evaluation device 112, which delivers the actual stroke reversal point.
  • the control computer 114 supplies the setpoint value of the reversal to the flash memory 13.
  • the determination of the deviation of the actual value I from the setpoint value S takes place outside the computer 114, this being calculated by the computer 114 and is passed on to a setpoint generator 1 16.
  • the deviations as a function of the traversing speed V ch are stored in the follow-up table 115.
  • the setpoint generator 116 forwards corresponding control commands after receiving the deviation value to a position speed controller 11 of a drive.
  • the traversing stroke is corrected after each stroke.
  • the system can correct a follow-up error that occurs much faster than with the solution from FIG. 1.
  • the target-actual deviations are generally calculated for the left and right sides of the traversing, so that target values for the left and right side of the coil are also simultaneously present in the computer 14 or memory 13.
  • FIG. 3 shows the method of calculating an average laying speed or average angular velocity ⁇ m of a pointer as a thread guide, which is necessary for compliance of a specific winding ratio at a specific spool speed is determined
  • customer-specific operating data BD can be entered, for example crossing angle, bandwidth, stroke width etc.
  • the configuration data KD which are important for controlling the traversing, are preferably predetermined, which are used for the calculation of actuating data the traversing SD are used.
  • a break table BT which contains, among other things, favorable turns, is provided
  • a winding ratio table WV is generated from the operating data BD, the breakage table BT and the configuration data KD together with a coil diameter SPD that is currently being calculated the jump itself is limited by the permissible crossing changes
  • the control data of the traversing SD are taken into account on the one hand.
  • the frequency of a sensing roller f TM and the frequency of the coil fsp are used for this purpose.
  • the current coil diameter D (SP) is determined from the data mentioned
  • the frequency pulse f S p is passed on to a target stroke counter H S OLL.
  • the turn ratio table WV supplies a value for the coil diameter to the stroke counter HSOL
  • the drive of the traversing device in turn has a stroke counter that records the actual position of the thread guide. Comparing the desired position with the actual position of the thread guide results in a control and guide size in a controller 131.
  • the set size of this controller 131 is the average laying speed or uni-speed speed m
  • a tachometer delivers a certain number of pulses f sp per coil revolution. In this way, each pulse of the speedometer can be assigned a precisely ascertainable stroke distance for a predetermined turn ratio.
  • FIG. 4 shows a schematic illustration for calculating the acceleration values for a servo drive of a traversing device.
  • further operating data BD e.g. are important for lifting breathing, preferably selected manually by a user.
  • the important values for stroke breathing include the stroke period, stroke distribution and stroke amplitude, etc. (see below).
  • control data are determined which are used for calculating the stroke width HB.
  • control data are determined which are used for calculating the stroke width HB.
  • the configuration data KD for the control in particular the pointer length and the profile table PT of a speed profile in one stroke, further actuating data of the traversing are recorded, which are used further for the acceleration values of the drive AS.
  • the turn ratio table WV is determined from these operating data BD, the configuration data KD and the break table BT. This turn ratio table WV also contains the course of the stroke length as a function of the coil diameter.
  • the stroke period counter HP is acted upon by the actual counter H ist with values or pulses.
  • the current stroke width setpoint HB is now determined from the stroke period counter HP, the stroke width corresponding to the coil diameter D (SP) from the turn ratio table WV and the course of stroke breathing defined in the operating data BD (as a function of the number of strokes).
  • the acceleration values AS of the servo drive are now determined from the nominal stroke width setpoint HB, the turn ratio table WV, the profile table PT and the mean laying speed or mean angular speed ⁇ m .
  • the counter of the stroke period HP receives data from a stroke counter, to which signals or values from the actual stroke counter of the servo motor are applied. From the positioning data of the traversing, the calculated stroke width and the also calculated average Installation speed, an acceleration table AS for the servo drive of the traversing device is calculated
  • FIG. 5 shows an example of the parameterization of a stroke breathing.
  • the stroke breathing leads to a modulation of the stroke width in the course of the winding travel
  • FIG. 5 shows the temporal increase and decrease of the nominal stroke with a stroke amp A.
  • the stroke amplitude A can be selected in oo of the nominal stroke HB.
  • the stroke distribution V indicates the ratio of the increase to the decrease in amplitude, for example in% of the period.
  • the stroke period P describes the length of time of the modulation cycle and can be specified in units of the traverse stroke. In other alternatives of the modulations, the period P can also relate to the number of double strokes (n DH ) or to the bobbin diameter or bobbin time
  • FIG. 7 shows the specification of a speed professional in one stroke
  • the speed profile is defined with the support points P 0 to P 8 and places the (relative) speed of the thread guide or the traversing device between the end deflections Ei and E 2 Die End deflections Ei and E 2 represent a relative stroke width, which is adjusted according to the actual stroke width on a spool.
  • FIG. 9 shows, for example, the diameter-dependent change in the stroke width HB as a function of the coil diameter, which is defined via the support points Di and the associated stroke widths HB.
  • Four interpolation points D 0 to D 3 and HB 0 to HB 3 are shown in this example.
  • the stroke width can be changed depending on the number of double strokes ⁇ D H or the winding time t.
  • the stroke width variation and the parameters for the stroke breathing can be available in fixed menus or can be specified by an operator.
  • the provision of bobbin recipes makes work easier when winding the thread.
  • the arrangement is preferably selected such that the user must specify the stroke width (HB) of the coil to be formed (enter it in the control).
  • the controller preferably a computer
  • RR target position
  • LR target position
  • the control system can therefore ensure this that the summation of the measured error with the target reversal point recorded in the control system results in the applicable target position for the end point of the reversal Be variable depending on the intended coil structure (lifting breathing, etc.).
  • the respective error compared to the currently applicable target reversal point cannot be influenced directly, but the controller can adapt the target reversal point that it has set itself in order to take into account the effective size of the error. It should be noted, however, that although the target reversal points can be freely determined by the controller, the target positions for the end points of the reversal can only be changed in accordance with the data entered for the winding process.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Winding Filamentary Materials (AREA)
  • Manufacture Of Motors, Generators (AREA)
  • Replacing, Conveying, And Pick-Finding For Filamentary Materials (AREA)

Abstract

L'invention concerne un procédé pour faire fonctionner une machine servant à enrouler un fil, en particulier une bobineuse. Au moyen d'un guide-fil d'enroulement croisé, un fil est guidé de façon à passer, au cours d'une course de croisement et de façon alternée, d'un point d'inversion de sens à l'autre, transversalement par rapport au sens de retrait du fil, pour être déposé sur une bobine en rotation. L'invention concerne également des dispositifs permettant de mettre en oeuvre ce procédé. Selon l'invention, il est proposé qu'au niveau d'un point d'inversion de sens soit placé un point terminal d'inversion du déplacement du guide-fil et qu'en fonction de la position de ce point terminal, la course d'inversion soit, lors d'une course suivante, corrigée, de préférence raccourcie ou rallongée. Selon une variante, il est prévu qu'en fonction d'un rapport de bobinage prédéterminé et d'un nombre de tours de bobine, l'entraînement du guide-fil ou du dispositif d'inversion de sens soit commandé de telle sorte que lorsque le nombre de tours de bobine est atteint ou qu'une modification du nombre de tours de bobine est réalisée, le rapport d'enroulement soit maintenu.
PCT/CH2000/000552 1999-10-19 2000-10-13 Procede et dispositif pour enrouler un fil sur une bobine WO2001028907A2 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
DE50011986T DE50011986D1 (de) 1999-10-19 2000-10-13 Verfahren und vorrichtung zum aufwickeln eines fadens auf eine spule
EP00965706A EP1222133B1 (fr) 1999-10-19 2000-10-13 Procede et dispositif pour enrouler un fil sur une bobine
JP2001531706A JP2004500295A (ja) 1999-10-19 2000-10-13 糸をボビンに巻き取るための方法及び装置
AU76376/00A AU7637600A (en) 1999-10-19 2000-10-13 Method and device for winding a thread onto a bobbin
AT00965706T ATE314301T1 (de) 1999-10-19 2000-10-13 Verfahren und vorrichtung zum aufwickeln eines fadens auf eine spule

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE19950285.4 1999-10-19
DE1999150285 DE19950285A1 (de) 1999-10-19 1999-10-19 Verfahren und Vorrichtung zum Aufwickeln eines Fadens auf eine Spule
CH237699 1999-12-24
CH2376/99 1999-12-24

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WO2001028907A2 true WO2001028907A2 (fr) 2001-04-26
WO2001028907A3 WO2001028907A3 (fr) 2001-11-22

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JP (1) JP2004500295A (fr)
AT (1) ATE314301T1 (fr)
AU (1) AU7637600A (fr)
DE (1) DE50011986D1 (fr)
WO (1) WO2001028907A2 (fr)

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Publication number Priority date Publication date Assignee Title
WO2002083538A1 (fr) * 2001-04-18 2002-10-24 Maschinenfabrik Rieter Ag Procede pour faire fonctionner une machine a enrouler des fils et dispositif d'enroulement associe
WO2010116103A1 (fr) * 2009-04-09 2010-10-14 Ritm Dispositif de bobinage d'un fil sur une bobine a rapport de bobinage constant
EP2343261A3 (fr) * 2010-01-12 2014-03-12 Murata Machinery, Ltd. Machine de renvidage de fil et procédé de renvidage de fil
CN114519780A (zh) * 2022-04-21 2022-05-20 山东捷瑞数字科技股份有限公司 一种基于三维引擎实现模拟筒纱卷绕的运动仿真方法

Families Citing this family (3)

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DE102013016644A1 (de) * 2013-10-05 2015-04-09 Saurer Germany Gmbh & Co. Kg Verfahren zum Betreiben einer Arbeitsstelle einer Kreuzspulen herstellenden Textilmaschine
DE102014008574A1 (de) * 2014-06-11 2015-12-17 Saurer Germany Gmbh & Co. Kg Textilmaschine mit Spulvorrichtungen
DE102017116548A1 (de) * 2017-07-21 2019-01-24 Oerlikon Textile Gmbh & Co. Kg Verfahren und Vorrichtung zum Aufwickeln eines Spinnfadens, insbesondere eines Glasfadens zu einer Spule

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US4394986A (en) * 1981-05-13 1983-07-26 Toray Industries, Inc. Yarn winding apparatus
US4676441A (en) * 1984-01-18 1987-06-30 Fritjof Maag Precision wound yarn package as well as a process and device for making the same
EP0401781A1 (fr) * 1989-06-09 1990-12-12 Fritjof Dr.-Ing. Maag Bobine croisée enroulée avec précision, méthode pour la production et dispositif à cet effet
EP0453622A1 (fr) * 1990-04-23 1991-10-30 Ssm Schärer Schweiter Mettler Ag Procédé et dispositif pour enrouler un fil sur une bobine
WO1992008664A1 (fr) * 1990-11-09 1992-05-29 James Edward Freeman Production de paquets de fil
US5439184A (en) * 1992-03-16 1995-08-08 Georg Sahm Gmbh & Co. Kg Precision winding method and apparatus
EP0838422A1 (fr) * 1996-10-28 1998-04-29 Ssm Schärer Schweiter Mettler Ag Dispositif pour enrouler un fil sur une bobine
DE19807030A1 (de) * 1997-02-27 1998-09-03 Barmag Barmer Maschf Verfahren zum Aufwickeln eines Fadens zu einer Spule
WO1999005055A1 (fr) * 1997-07-26 1999-02-04 Barmag Ag Procede et dispositif a va-et-vient pour la pose d'un fil
WO1999065810A1 (fr) * 1998-06-12 1999-12-23 Maschinenfabrik Rieter Ag Changement de fil

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4394986A (en) * 1981-05-13 1983-07-26 Toray Industries, Inc. Yarn winding apparatus
US4676441A (en) * 1984-01-18 1987-06-30 Fritjof Maag Precision wound yarn package as well as a process and device for making the same
EP0401781A1 (fr) * 1989-06-09 1990-12-12 Fritjof Dr.-Ing. Maag Bobine croisée enroulée avec précision, méthode pour la production et dispositif à cet effet
EP0453622A1 (fr) * 1990-04-23 1991-10-30 Ssm Schärer Schweiter Mettler Ag Procédé et dispositif pour enrouler un fil sur une bobine
WO1992008664A1 (fr) * 1990-11-09 1992-05-29 James Edward Freeman Production de paquets de fil
US5439184A (en) * 1992-03-16 1995-08-08 Georg Sahm Gmbh & Co. Kg Precision winding method and apparatus
EP0838422A1 (fr) * 1996-10-28 1998-04-29 Ssm Schärer Schweiter Mettler Ag Dispositif pour enrouler un fil sur une bobine
DE19807030A1 (de) * 1997-02-27 1998-09-03 Barmag Barmer Maschf Verfahren zum Aufwickeln eines Fadens zu einer Spule
WO1999005055A1 (fr) * 1997-07-26 1999-02-04 Barmag Ag Procede et dispositif a va-et-vient pour la pose d'un fil
WO1999065810A1 (fr) * 1998-06-12 1999-12-23 Maschinenfabrik Rieter Ag Changement de fil

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002083538A1 (fr) * 2001-04-18 2002-10-24 Maschinenfabrik Rieter Ag Procede pour faire fonctionner une machine a enrouler des fils et dispositif d'enroulement associe
WO2010116103A1 (fr) * 2009-04-09 2010-10-14 Ritm Dispositif de bobinage d'un fil sur une bobine a rapport de bobinage constant
FR2944271A1 (fr) * 2009-04-09 2010-10-15 Ritm Dispositif de bobinage d'un fil sur une bobine a rapport de bobinage constant
EP2343261A3 (fr) * 2010-01-12 2014-03-12 Murata Machinery, Ltd. Machine de renvidage de fil et procédé de renvidage de fil
CN114519780A (zh) * 2022-04-21 2022-05-20 山东捷瑞数字科技股份有限公司 一种基于三维引擎实现模拟筒纱卷绕的运动仿真方法
CN114519780B (zh) * 2022-04-21 2022-07-19 山东捷瑞数字科技股份有限公司 一种基于三维引擎实现模拟筒纱卷绕的运动仿真方法

Also Published As

Publication number Publication date
EP1222133B1 (fr) 2005-12-28
DE50011986D1 (de) 2006-02-02
EP1222133A2 (fr) 2002-07-17
JP2004500295A (ja) 2004-01-08
WO2001028907A3 (fr) 2001-11-22
AU7637600A (en) 2001-04-30
ATE314301T1 (de) 2006-01-15

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