EP0291712B1 - Méthode pour trier des bobines dans un bobinoir automatique - Google Patents

Méthode pour trier des bobines dans un bobinoir automatique Download PDF

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Publication number
EP0291712B1
EP0291712B1 EP88106303A EP88106303A EP0291712B1 EP 0291712 B1 EP0291712 B1 EP 0291712B1 EP 88106303 A EP88106303 A EP 88106303A EP 88106303 A EP88106303 A EP 88106303A EP 0291712 B1 EP0291712 B1 EP 0291712B1
Authority
EP
European Patent Office
Prior art keywords
cross
wound bobbin
yarn length
automatically
bobbin package
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP88106303A
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German (de)
English (en)
Other versions
EP0291712A1 (fr
Inventor
Joachim Dr. Ing. Rüge
Ludwig Neuhaus
Gregor Kathke
Ferdinand-Josef Hermanns
Gregor Gebald
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Oerlikon Textile GmbH and Co KG
Original Assignee
W Schlafhorst AG and Co
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 W Schlafhorst AG and Co filed Critical W Schlafhorst AG and Co
Publication of EP0291712A1 publication Critical patent/EP0291712A1/fr
Application granted granted Critical
Publication of EP0291712B1 publication Critical patent/EP0291712B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B65H61/00—Applications of devices for metering predetermined lengths of running material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H63/00—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control 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
    • B65H63/00—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package
    • B65H63/06—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package responsive to presence of irregularities in running material, e.g. for severing the material at irregularities ; Control of the correct working of the yarn cleaner
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H63/00—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package
    • B65H63/08—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package responsive to delivery of a measured length of material, completion of winding of a package, or filling of a receptacle
    • B65H63/082—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package responsive to delivery of a measured length of material, completion of winding of a package, or filling of a receptacle responsive to a predetermined size or diameter 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
    • B65H2515/00—Physical entities not provided for in groups B65H2511/00 or B65H2513/00
    • B65H2515/12—Density
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2551/00—Means for control to be used by operator; User interfaces
    • B65H2551/20—Display means; Information output means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2557/00—Means for control not provided for in groups B65H2551/00 - B65H2555/00
    • B65H2557/60—Details of processes or procedures
    • B65H2557/65—Details of processes or procedures for diagnosing
    • 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 sorting packages on an automatic winder. As described in principle in US-A 4,555,068.
  • the invention has for its object to make a distinction between cross-wound bobbins of lower and higher quality at the winding units of the automatic winder.
  • this object is achieved in that the target ratio of yarn length to cross-bobbin diameter is specified, that the actual ratio of yarn length to cross-bobbin diameter is measured automatically, that the measured values are compared automatically with the target values and that those packages are used as quality Cross-wound bobbins are automatically discarded, the actual ratio of yarn length to cross-wound bobbin diameter lies in a predeterminable range of the setpoints.
  • the coil density which is otherwise difficult or impossible to ascertain, is the criterion of quality here.
  • the angle of rotation or the number of revolutions of a friction drum which is in frictional contact with the cross-wound bobbin or drives the cross-wound bobbin is automatically measured and the measurement result is equated with the yarn length or automatically converted into another, for example metric, yarn length measure and for determining the actual value -Ration of yarn length to cross bobbin diameter is used.
  • the yarn length determined in this way can deviate from the true yarn length by one measurement tolerance.
  • the true yarn length is to be deduced from the measured yarn length, it is advantageous to convert the measurement result, for example, to a metric yarn length measure.
  • a process computer is used anyway, so that an appropriate computer program can easily be set up.
  • the rotational speeds of the cheese and a friction drum which is in frictional contact with the cheese or drives the cheese are automatically measured and related to one another.
  • the ratio of the speed of the cross-wound bobbin to the rotational speed of the friction drum is used to calculate the cross-wound bobbin diameter or is automatically converted into another, for example metric, dimension of the cross-wound bobbin diameter and used to determine the actual ratio of yarn length to cross-wound bobbin diameter.
  • cross-bobbin diameter here in a metric measure is basically only of interest if the cross-bobbin diameter is to be displayed automatically or to be printed out by a connected printer using a process computer.
  • the measured values used for this purpose are corrected values for slip between the friction drum and package and / or conicity of the package and / or maximum diameter of the package and / or type and surface condition of the friction drum and / or type of thread and / or crosshair angle automatically corrected.
  • corrections are particularly important when the real yarn length and the true package diameter are to be determined, displayed or printed out. Correction values are also useful for refining the quality determination.
  • the actual ratio of yarn length to cross-bobbin diameter is continuously determined during the bobbin travel and compared with target values.
  • target values already during the build-up of the spool you can see which quality standard the spool tends to. If necessary, intervention can already be made in the winding mode, the winding unit switched off, for example, and a message signal initiated.
  • the winding tension of the yarn is automatically controlled to influence the current actual ratio of yarn length to cross-bobbin diameter. This effectively counteracts the creation of low-quality packages.
  • a signal is automatically set at that winding point of the automatic winder at which the measured actual ratio of yarn length increases Cross-bobbin diameter is outside the range of the setpoints.
  • the signal is set as soon as the winding process has ended.
  • the signal can also be set during the winding cycle and the winding process can be interrupted.
  • Automatic winding machines often have a special automatic system, which ensures that the package is replaced by an empty bobbin tube.
  • an automatic exchange of the cross-wound bobbin against an empty bobbin tube is prevented at the bobbin points at which the measured actual ratio of yarn length to cross-wound bobbin diameter lies outside the range of the target values. Whether this is the case can be determined either during the winding cycle or at the end of the winding process.
  • Each package of poor quality then remains in the winding unit, is not automatically cleared and may have to be removed from the winding unit by hand.
  • the number of yarn breaks and / or the number of cleaner cuts is automatically counted as additional criteria for the package quality and that, moreover, only those packages which have the number of Yarn breaks and / or the number of cleaner cuts during the winding cycle does not exceed a predetermined maximum number.
  • an electronic informator that is, by a device that has a Microprocessor or process computer with interface contains, an overview of the number of quality cross-wound bobbins produced at the individual winding units of the automatic winder is displayed and / or printed out.
  • the quality of the winding unit itself has a decisive influence on the quality of the packages that are produced in this winding unit. Inferior winding units must be serviced, repaired or replaced in good time.
  • Different standards can be applied when dividing the packages into quality levels. For example, it can be about quality levels taking into account all quality criteria. However, quality levels can also be used, in which only a part of the relevant quality criteria or only certain specific quality criteria are used as a measure of quality.
  • the discarded quality cross-wound bobbins are identified or labeled according to their quality characteristics. This means that packages of different quality can no longer be easily confused with one another later.
  • a friction roller 3 is connected by a shaft 4 to a motor 5, which forms the drive device of the friction roller 3.
  • the motor 5 is connected to an electronic process computer 9 by a control line 8.
  • the motor 5 is supplied with operating voltage from a voltage source 10 via multi-core lines 11, 12 and a contactor 13 as long as the contactor 13 is switched on.
  • the contactor 13 is here also part of a shutdown device of the winding unit 1.
  • the contactor 13 is connected to the process computer 9 by a control line 14.
  • the friction roller 3 has a speed sensor 2, which is connected by a line 39 to a tachometer n1, which in turn is connected to the process computer 9.
  • a pivoted spool frame 15, 16 carries the sleeve 17 of a package 18 in the form of a cheese with a wild winding.
  • the package 18 is driven circumferentially by the friction roller 3 during the winding process. It lies on the friction roller 3 with a certain contact force.
  • a thread or yarn 19 is fed to the package 18 in an alternating manner.
  • the traversing is provided by sweeping thread grooves 20 in the friction roller 3.
  • the sweeping thread grooves 20 guide the thread 19 in such a way that it constantly changes from left to right and back during the winding process.
  • the spool frame 15, 16 can be opened and closed to remove a finished package 18 and to insert a new spool sleeve.
  • the coil frame 15, 16 with an electromagnetic Connected lifting device 21, which serves as a further storage device of the winding unit 1.
  • the lifting device 21 is connected to the process computer 9 by a control line 22.
  • Rotatable sleeve support elements 23, 24 are mounted in the coil frame 15, 16.
  • the sleeve support elements 23, 24 are tapered towards the coil sleeve 17 in order to be able to accommodate sleeves of different diameters.
  • a pulse generator 27 is connected to the other rotatable sleeve support element 24, which itself transmits a pulse via a pulse line 29 to a revolution counter Z2 of the process computer 9 per revolution of the sleeve support element 24 and thus also per revolution of the bobbin tube 17 and the package 18.
  • a pulse generator 28 is also arranged on the shaft 4 of the friction roller 3, which transmits a pulse to a revolution counter Z1 of the process computer 9 per revolution of the shaft 4 and thus also per revolution of the friction roller 3 via a pulse line 30.
  • the winding unit 1 also has a control device 31 for ejecting a finished package 18 onto a conveyor belt 7 running in the direction of arrow 6.
  • the control device 31 is connected to the process computer 9 by a control line 32.
  • the control device 31 has a pivotable arm 33, at the end of which a roller 34 is mounted.
  • the process computer 9 has a divider D and a comparator K.
  • the process computer 9 is provided with setpoint adjusters 35, 36 and a setpoint generator 37.
  • the nominal yarn length is set on the nominal value adjuster 35 and the nominal cross-wound bobbin diameter on the nominal value adjuster 36.
  • the nominal ratio of yarn length to cross-wound bobbin diameter is set on the nominal value transmitter 37.
  • Correction values 46 and 47 can be used to set correction values for slip between the friction drum and the cheese and for the taper of the cheese.
  • Correction values for the yarn type and for the cross hair angle can be set on further correction adjusters 50 and 51. Further correction values are not taken into account in this exemplary embodiment.
  • the correction value for the yarn type automatically takes into account the type of fiber, the fiber mixture, the yarn count and all other yarn parameters that later influence the ratio of yarn length to bobbin diameter.
  • Another counter Z3 of the electronic process computer 9 is connected to a yarn cleaner 40 via a pulse line 38.
  • the counter Z3 counts the number of cleaner cuts, equivalent to the number of yarn breaks during the winding cycle.
  • the number of interruptions in the thread depends on the quality of the thread and the winding unit, on the size of the package or package and on the size of the supply packages or bobbins to be rewound.
  • a setpoint of the number of cleaner cuts can be specified, the control device 31 being blocked when it is exceeded, ie the cheese 18 remains in the winding station and cannot be discharged onto the conveyor belt 7.
  • the winding unit must each time a spinning cop runs out turned off and restarted after the thread connection and after presenting a new cop. Even if thread errors occur that lead to a cleaner cut, the winding unit must be switched off, the thread connection restored and the winding unit started again.
  • the bobbin tube 17 lies on the friction roller 3.
  • the lifting device 21 is out of operation.
  • the contactor 13 is turned on.
  • Counter Z1, Z2, Z3, comparator K, divider D, tachometer n1, n2 are in operation.
  • the counter Z2 counts the revolutions of the sleeve support element 24.
  • Counter Z1 counts the revolutions of the friction roller 3.
  • the revolving signals originate from the pulse generators 27 and 28.
  • the tachometers n1 and n2 continuously measure the speeds of the friction roller 3 and the package 18.
  • the number of revolutions of the friction roller 3 recorded by the counter Z1 is a measure of the length of yarn running onto the package 18.
  • the divider D forms the ratio n2: n1 of the rotational speeds of the cheese and the friction roller. The result is a measure of the package diameter.
  • the divider D forms the ratio of the yarn length to the package diameter and passes it on to the comparator K.
  • the actual ratio of yarn length to cross-wound bobbin diameter is continuously compared in comparator K with the desired ratio of yarn length to cross-wound bobbin diameter specified by setpoint generator 37.
  • the comparator K initiates the process computer 9 by controlling the yarn tension via the control line 43, the electromagnetic drive 45 and the To regulate the thread tensioner 42 so that the actual ratio of the yarn length to the package diameter corresponds within tolerance limits to the target ratio. If this does not succeed, the process computer 9 switches off the motor 5 via the control line 14 and the contactor 13 and lifts the bobbin frame 15, 16 via the control line 22 and the lifting device 21 in order to lift the cross-wound bobbin 18 from the friction roller 3. The discharge of the cheese 18 onto the conveyor belt 7 remains blocked in this case.
  • the diagram on the setpoint generator 37 shows the set course of the cross-wound bobbin diameter as a function of the yarn length in a solid curve.
  • the yarn length is entered as the abscissa, the cross-bobbin diameter as the ordinate.
  • the target course can also follow the curve shown in dashed or dash-dotted lines, for example.
  • the comparator K does not react to the setpoint generator 37, but rather to the setpoint adjusters 35 and 36.
  • the winding process is ended when, depending on the selection, either the set yarn length set on the setpoint adjuster 35 or the set cross winder diameter set on the setpoint setter 36 is reached.
  • the comparator K compares the actual ratio of yarn length to cross-wound bobbin diameter with the target ratio, which results or is calculated from the settings of the target value adjusters 35 and 36. Is the actual ratio within tolerance limits with the target ratio coincides, the winding unit 1 is stopped in the manner explained below and the control device 31 is also actuated in order to discharge the fully wound cross-wound bobbin 18 onto the conveyor belt 7 as a quality cross-wound bobbin.
  • the counting result of the counter Z3 can serve as a further criterion for the quality of the cheese.
  • a maximum number of tolerable cleaner cuts can be specified on the counter Z3, for example 30 cleaner cuts. If the package 18 reaches more than 30 cleaner cuts during the winding cycle, it is still being finished wound, but does not reach the conveyor belt 7, regardless of whether the actual ratio of yarn length to package diameter corresponds to the target ratio or not.
  • a control signal 44 sends a signal to a signaling device 41 in order to alert the machine attendant to the event.
  • the winding unit 1 can be switched off by a switch-off pulse supplied by the yarn cleaner 10 via the control line 48 to the electronic computer 9. This happens in the event of a thread error that triggers a cleaning cut, in the event that the payout spool is idling and in the event that the thread is not present other reasons.
  • An interruption in the yarn can be automatically remedied, for example, by a splicing or knotting machine, not shown here.
  • a start pulse then goes to the computer 9 via a further control line 49, which then triggers and controls a start process described above.
  • the measured values used for this purpose are corrected by the correction factors set on the correction adjusters 46, 47, 50 and 51.
  • the specification of such correction factors can be omitted if the setpoints set on the setpoint adjusters 35 and 36 already take such correction factors into account.

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  • Engineering & Computer Science (AREA)
  • Quality & Reliability (AREA)
  • Textile Engineering (AREA)
  • Filamentary Materials, Packages, And Safety Devices Therefor (AREA)
  • Replacing, Conveying, And Pick-Finding For Filamentary Materials (AREA)

Claims (12)

1. Procédé pour trier des bobines croisées sur un bobinoir automatique, caractérisé par le fait que l'on prédétermine le rapport de consigne entre la longueur du fil et le diamètre des bobines croisées, que l'on mesure automatiquement le rapport réel entre la longueur du fil et le diamètre des bobines croisées, que l'on compare automatiquement les valeurs mesurées aux valeurs de consigne et que l'on sélectionne automatiquement comme bobines croisées de qualité celles des bobines croisées dont le rapport réel entre la longueur du fil et le diamètre de la bobine croisée est situé dans une zone des valeurs de consigne qui peut être prédéterminée.
2. Procédé selon la revendication 1, caractérisé par le fait que l'on mesure automatiquement l'angle de rotation ou, respectivement, le nombre des révolutions d'un tambour de friction qui se trouve en contact de friction avec la bobine croisée ou, respectivement, qui entraîne la bobine croisée, que l'on égale le résultat de la mesure à la longueur du fil ou, respectivement, qu'on le convertit en une autre mesure de la longueur du fil, par exemple métrique, et qu'on l'utilise pour déterminer le rapport réel entre la longueur du fil et le diamètre de la bobine croisée.
3. Procédé selon la revendication 1 ou 2, caractérisé par le fait que l'on mesure automatiquement les vitesses de rotation de la bobine croisée et d'un tambour de friction qui se trouve en contact de friction avec la bobine croisée ou, respectivement, qui entraîne la bobine croisée et que l'on en fait le rapport, et par le fait que l'on utilise le rapport entre la vitesse de rotation de la bobine croisée et la vitesse de rotation du tambour de friction pour calculer le diamètre de la bobine croisée ou, respectivement, qu'on le convertit automatiquement en une autre mesure du diamètre de la bobine croisée, par exemple métrique, et qu'on l'utilise pour déterminer le rapport réel entre la longueur du fil et le diamètre de la bobine croisée.
4. Procédé sel on l'une des revendications 1 à 3, caractérisé par le fait que, lors de la détermination de la longueur du fil et/ou du diamètre de la bobine croisée, on corrige automatiquement les valeurs mesurées utilisées à cette fin au moyen de valeurs de correction pour le glissement entre le tambour de friction et la bobine croisée et/ou la conicité de la bobine croisée et/ou le diamètre maximal de la bobine croisée et/ou le type du tambour de friction et la nature de sa surface et/ou le type de fil et/ou l'angle de croisement du fil.
5. Procédé selon l'une des revendications 1 à 4, caractérisé par le fait que l'on détermine en continu le rapport réel entre la longueur du fil et le diamètre de la bobine croisée pendant la formation de la bobine et qu'on le compare à des valeurs de consigne.
6. Procédé selon l'une des revendications 1 à 5, caractérisé par le fait que l'on commande automatiquement la tension d'enroulement du fil pour agir sur le rapport réel instantané entre la longueur du fil et le diamètre de la bobine croisée.
7. Procédé selon l'une des revendications 1 à 6, caractérisé par le fait qu'un signal est produit automatiquement sur celle des têtes de bobinage du bobinoir automatique sur laquelle le rapport réel mesuré entre la longueur du fil et le diamètre de la bobine croisée est situé à l'extérieur de la zone des valeurs de consigne.
8. Procédé selon l'une des revendications 1 à 7, caractérisé par le fait que le remplacement automatique de la bobine croisée par un bobineau vide est empêché sur les têtes de bobinage sur lesquelles le rapport réel mesuré entre la longueur du fil et le diamètre de la bobine croisée est situé à l'extérieur de la zone des valeurs de consigne.
9. Procédé selon l'une des revendications 1 à 8, caractérisé par le fait que l'on compte en outre automatiquement, comme critères supplémentaires de qualité pour la bobine, le nombre des ruptures de fil et/ou le nombre des débourrages, et par le fait que, par ailleurs, on ne sélectionne automatiquement, comme bobines croisées de qualité, que celles des bobines croisées pour lesquelles le nombre des ruptures de fil et/ou le nombre des débourrages au cours de la formation de la bobine ne dépasse pas un nombre maximal prédéterminé.
10. Procédé selon l'une des revendications 1 à 9, caractérisé par le fait qu'à la fin d'un poste de travail, un dispositif électronique d'information affiche et/ou imprime une vue d'ensemble sur le nombre des bobines croisées de qualité fabriquées sur les diverses têtes de bobinage du bobinoir automatique.
11. Procédé selon l'une des revendications 1 à 10, caractérisé par le fait que l'on prédétermine une pluralité de valeurs de consigne pour chaque catégorie de valeurs de consigne, et par le fait que l'on sélectionne les bobines croisées de qualité en les classant selon un nombre correspondant de niveaux de qualité.
12. Procédé selon l'une des revendications 1 à 11, caractérisé par le fait que l'on marque ou, respectivement, que l'on étiquette les bobines croisées de qualité sélectionnées selon leurs caractéristiques de qualité.
EP88106303A 1987-05-16 1988-04-20 Méthode pour trier des bobines dans un bobinoir automatique Expired - Lifetime EP0291712B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19873716473 DE3716473A1 (de) 1987-05-16 1987-05-16 Verfahren zum sortieren von kreuzspulen an einem spulautomaten
DE3716473 1987-05-16

Publications (2)

Publication Number Publication Date
EP0291712A1 EP0291712A1 (fr) 1988-11-23
EP0291712B1 true EP0291712B1 (fr) 1991-03-27

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EP88106303A Expired - Lifetime EP0291712B1 (fr) 1987-05-16 1988-04-20 Méthode pour trier des bobines dans un bobinoir automatique

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US (1) US4828191A (fr)
EP (1) EP0291712B1 (fr)
DE (2) DE3716473A1 (fr)

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EP0291712A1 (fr) 1988-11-23
DE3862154D1 (de) 1991-05-02
DE3716473A1 (de) 1988-11-24
US4828191A (en) 1989-05-09

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