EP0943575A2 - Verfahren zur Überwachung des Paraffinauftrags auf einen laufenden Faden - Google Patents
Verfahren zur Überwachung des Paraffinauftrags auf einen laufenden Faden Download PDFInfo
- Publication number
- EP0943575A2 EP0943575A2 EP98121067A EP98121067A EP0943575A2 EP 0943575 A2 EP0943575 A2 EP 0943575A2 EP 98121067 A EP98121067 A EP 98121067A EP 98121067 A EP98121067 A EP 98121067A EP 0943575 A2 EP0943575 A2 EP 0943575A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- friction
- slip
- drum
- coil
- winding
- 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
Links
Images
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
- 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
- B65H71/00—Moistening, sizing, oiling, waxing, colouring or drying filamentary material as additional measures during package formation
-
- 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 according to the Preamble of the first claim.
- the object of the present invention is to monitor the Paraffin application on a running thread with funds perform that already while monitoring the ongoing Winding operation are used.
- the coil is driven by friction through the Friction drum.
- the peripheral speed of the coil is more due to slippage or less behind the peripheral speed of the Friction drum back. With the help of this slip the Image disturbance.
- the friction force and thus that Drive torque on the coil depend on the winding technology parameters such as overlay compensation, type of yarn, Bobbin mass, yarn preparation, etc.
- sensors are attached in the coil frame with which the Angle of rotation and thus the angular velocity or Orbital period of the two rotating bodies is constantly determined become. This is usually used to determine what is going on during of the bobbin travel of the constantly changing diameter of the cheese. These sensors are also within the scope of the invention for Monitoring of the paraffin application used. The goes Invention based on the knowledge that if the Paraffinizing the surface of the by the traversing stroke Cross-wound thread increasingly covering thread after a short time the friction behavior of the package surface significantly changed.
- Thread section running onto the package is according to the invention provided the winding unit immediately after the failure of the Suspend paraffin application. However, it would be too possible but associated with losses when the cheese fully wound and then as an off-standard spool is discarded.
- a very important measure for determining the friction behavior the surface of the package on the friction drum is absolute size of the slip between the friction drum and Coil that is in the acceleration phases during image disturbance occurs. This can be determined by evaluating the Angular velocities and orbital periods of the Determine the friction drum and the package.
- this To determine slip is the coil diameter, which is constantly changes during the package travel, as in known ones and to calculate in the manner already mentioned above. This Calculation cannot during the acceleration phases be carried out because during this time slip through falsified diameter would be determined. For this reason the diameter of the coil in the acceleration-free Discontinued phases calculated and the course of the increase in Coil diameter on the basis of the previous Predicted values for the acceleration phases. From the Difference between those adulterated by slip Coil diameter and the actual value of the The size of the slip in the coil diameter Determine slip phases quantitatively.
- An improvement in the informative value of the Paraffin application can also be achieved in that a Reference value by averaging the friction behavior of the Cross-wound bobbins at several bobbins is determined by one certain degree of a deviation as the absence of Paraffin order is defined.
- the friction drum 10 is provided with a reverse thread groove 12 so that it at the same time as a traversing device for an in Arrow direction via a thread tension sensor 13 by a Thread eyelet 14 serves thread 15.
- the thread 15 is on a coil sleeve 16 wound as a coil in a wild winding, so that a so-called cheese 17 is formed. Since the invention both in the manufacture of cylindrical packages and in Making conical cheese is applicable is shown in Fig. 1 a cylindrical cheese 17 and in Fig. 2 a conical Cross-wound bobbin 17 'shown.
- Coil radius or coil diameter is spoken at a conical cheese 17 'the neutral diameter or so-called driving diameters meant.
- the coil sleeve 16 is held by means of two coil plates 18, 19, each with a cone 20, 21 non-positively in the open ends of the sleeve 16 intervene.
- the bobbin 18, 19 with the sleeve 16 and so that rotate with the coil 17 are not in one Shown coil frame mounted, the one to the shaft 22nd the friction drum 10 parallel axis is pivotable.
- the shaft 22 of the friction drum 10 is a sensor 23 assigned, which is designed, for example, as an angle encoder is. The angular velocity, Period or speed of the friction drum detected.
- the Coil plate 18 is assigned a sensor 24, which is also a a rotary encoder is formed. By means of this sensor the corresponding measured values of the coil 17 are determined.
- the Signals from the sensors 23 and 24 are in a control and Evaluation device 25 detects.
- FIG. 3 shows an increase in diameter of approximately 0.75 mm in the range of a coil diameter of approximately 155.15 to approximately 155.9 mm in a period of approximately 17 seconds.
- the lower sections 30 of this curve correspond to the run-down phases in which the drive motor 11 of the friction drum 10 is switched off, so that the friction drum 10 and the spool 17 run without slippage in the case of a cylindrical spool geometry.
- the mentioned formula can therefore be used in these phase-out phases 30, so that the course of the curve shown in the phase-out phases 30 corresponds to the actual course of the increase in the coil radius r sp or here the coil diameter.
- the coil 17 has a lower peripheral speed than the friction drum 10.
- s o ⁇ r sp ) - ( ⁇ sp ⁇ r sp )] / ( ⁇ sp
- s o ) The coil radius is calculated in the acceleration phases as the so-called falsified coil
- the driven one changes Diameter at which the peripheral speeds of Friction drum and cheese coincide, fictitious at one Acceleration, as can be seen from Fig. 5.
- the driven diameter due to the acceleration-free Drive a so-called neutral diameter zone in which each reached diameter of the conical cheese is definable.
- the curve shows a running-in or settling process.
- the settling process cannot be used to determine the diameter of the cross-wound bobbin because the distorted diameter does not match the neutral bobbin diameter.
- this settling process must be equalized. This is done by introducing prior knowledge of the run-in process into the neutral zone.
- the calculation of a model offers itself Compensation polynomial of the nth degree.
- model parameters Polynomial coefficients
- Run-in phase can be determined.
- the n parameter sets of the running-in cycles averaged and a simultaneous course created become. If you divide the measured adulterated Diameter value with the corresponding model diameter value, see above you get an equalized diameter curve. This course is the amount of the currently valid cone diameter corrected.
- the time-variant straight line 32 and the slip can be calculated, for example, in accordance with an evaluation device explained in FIG. 2.
- the period durations measured by the sensors 23, 24 and thus also the angular velocity of the coil ⁇ sp and the friction drum ⁇ fw are input into a quotient generator 33. Since the radius r fw of the friction drum 10 is constant, the quotient ⁇ fw to ⁇ sp is already representative of the coil radius r sp , so that multiplication by the radius r fw of the friction drum 10 can be dispensed with. However, this value cannot yet be used for slip determination, since it is dependent on the diameter.
- This value is therefore input into a linear filter 34, for example a Kalman filter, to which the angular velocity ⁇ sp of the coil 17 'or 17 in FIG. 1 and the angular velocity ⁇ fw of the friction drum 10 are also input.
- the diameter values or, in the case of the conical cheese, the calculated equalized curve are only made available to the filter in the phase-out phases of the image disturbance.
- This linear filter 34 forms the time-variant compensation line 32. The calculation of the compensation radii takes place in the slip-free phases. In the acceleration phases, the best-fit line is continued on the basis of its predefined slope.
- This compensation line 32 is input together with the signal of the quotient 33 into a subtraction device 35, which then indicates the speed-independent and diameter-independent slip, ie the slip which is independent of the winding process state.
- the slip s determined in this way forms the calculation basis for the storage offset, which is independent of the diameter.
- the following applies to the speed of the coil: v Kitchen sink (t) (1 - s (t)) ⁇ v drum (t) .
- ⁇ l t1 t2 s (l) ⁇ v drum (t) dt, where t 2 - t 1 represents the time period to be examined.
- Point clouds are during a coil trip after each disturbance cycle, that is a succession of acceleration of the coil and its drive-free runout, the values for slip and offset Entered as a point in a diagram, there are very limited ones Point clouds, their location and orientation provide information about the Quality of the respective disturbance cycle and thus of the slip surrender. The state of the interference cycles is shown. As the diameter of the coil increases, so does the Point cloud.
- the absolute position of the point cloud can be over the entire machine or batch, that is, between many individual units become. This will cause discrepancies that are due to waning or point out the missing paraffin application, even faster and better recognized.
- Slip and friction force are also proportional. A drop in the slip can therefore be determined via the course of the friction force.
- the friction force can be calculated from the drive torque acting on the coil.
- This moment causes the speed of the spool to increase within a certain time interval.
- m Kitchen sink ⁇ Kitchen sink ⁇ J Kitchen sink .
- the torque determination between the spool and drum rotating bodies is decoupled by calculating the corresponding power.
- the following applies to the loss and load performance recorded in the discontinuation of the image disturbance: p Loss, burden m V, B
- the friction and convection losses of the drum drive can be determined with the aid of runout curves. Since the winding speed and thus the drum angular speed only varies by the set image disturbance stroke during winding operation (for example between ⁇ 1.5% to ⁇ 6%), the determination of this power loss only makes sense in this working area. For this reason, a model approach can be chosen that takes into account the outlet slope of the drum speed in the area of the production speed. The following therefore applies: m v
- drum -J drum ⁇ ( ⁇ drum / ⁇ t
- the measurement of the slope ⁇ drum / ⁇ t can be carried out during normal production without any significant loss of production.
- the drum drive need only be decoupled from the bobbin for a very short period of time (lifting of the package) and switched off.
- the drum drive can be actively braked to avoid unnecessary loss of production. Since this loss moment is constant during a bobbin trip, the run-out measurements need only be carried out after each process-related interruption of the bobbin operation.
- the drive power is determined using the measured acceleration torques of the drum and spool. For the calculation of the total drive power, the equation is therefore taken into account m V, B
- coil p drive / ⁇ drum .
- the determination of the friction torque generated via the friction force is based on the equation for the total drive power. However, not all of the performances listed in this equation are applied through friction.
- the friction slip creates during the acceleration phase the image disturbance taking into account the friction parameters of the Drum-coil system the friction force and thus that Drive torque on the coil. It is a direct dependency of the winding technology parameters such as support compensation, Yarn type, bobbin mass, yarn preparation, etc. can be seen.
- a thread tension sensor 13 is present at the winding point, can these have a connection to the evaluation device 25, so that changes in thread tension in slip detection can be taken into account. This will make one of the most important influencing factors that have no relation to the coefficient of friction of the cheese, eliminated.
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- Engineering & Computer Science (AREA)
- Quality & Reliability (AREA)
- Winding Filamentary Materials (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
Abstract
Description
- Fig. 1
- eine Spulvorrichtung mit einer Auswerteeinrichtung zur Bestimmung des Schlupfes,
- Fig. 2
- in einem Blockdiagramm den Aufbau einer Auswerteeinrichtung,
- Fig. 3
- ein Diagramm als einen kleinen Ausschnitt aus einer Spulreise zur Erläuterung der vorliegenden Erfindung,
- Fig. 4
- ein Diagramm über den zwischen einer Friktionstrommel und einer Spule auftretenden Schlupf während des Ausschnittes der Spulreise nach Fig. 3, wobei der Schlupf auf den Durchmesser der Spule skaliert ist,
- Fig. 5
- den Durchmesserverlauf in einem BeschleunigungsAuslaufdiagramm einer konischen Spule,
- Fig. 6
- einen egalisierten Auslaufvorgang einer konischen Spule,
- Fig. 7
- ein Diagramm, in dem der relative Ablageversatz über den Schlupf aufgetragen ist, jeweils für ein paraffiniertes und ein nichtparaffiniertes Garn, und
- Fig. 8
- ein Diagramm, in dem die Friktionskraft über den Schlupf aufgetragen ist, jeweils für ein paraffiniertes und ein nichtparaffiniertes Garn.
darin bedeuten:
- ωsp
- Winkelgeschwindigkeit der Spule
- ωfw
- Winkelgeschwindigkeit der Friktionstrommel
- rsp
- Radius der Spule
- rfw
- Radius der Friktionstrommel.
oder
Der Spulenradius errechnet sich in den Beschleunigungsphasen als sogenannter verfälschter Spulenradius :
Claims (9)
- Verfahren zur Überwachung des Paraffinauftrags auf einen laufenden Faden an einer Spulstelle einer Kreuzspulen herstellenden Textilmaschine, an der die Kreuzspule an ihrem Umfang mittels einer Friktionstrommel angetrieben wird, wobei der Antrieb der Friktionstrommel zur Vermeidung von Bildwickeln in Intervallen derart ein - und ausgeschaltet wird, daß Beschleunigungsphasen mit Schlupf zwischen Friktionstrommel und Spule und schlupflose Auslaufphasen aufeinanderfolgen,
dadurch gekennzeichnet,daß das Reibungsverhalten der Oberfläche der Kreuzspule auf der Friktionstrommel während der Spulenreise überwacht wird,daß dazu zum Reibwert proportionale Größen durch laufendes Ermitteln der Winkelgeschwindigkeiten der Friktionstrommel und der Kreuzspule bestimmt und ausgewertet werden, daß diese Werte mit dem erwarteten Verlauf über die Spulenreise verglichen werden und daß signifikante Abweichungen von diesem Verlauf als Ausfall des Paraffinauftrags bewertet werden. - Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß bei erkanntem Ausfall des Paraffinauftrages die Spulstelle stillgesetzt wird.
- Verfahren nach Anspruch 2, dadurch gekennzeichnet, daß zusätzlich ein Signal zum Ruf der Bedienperson generiert wird.
- Verfahren nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet,daß als zum Reibwert proportionale Größe der Schlupf zwischen Kreuzspule und Friktionstrommel bestimmt und ausgewertet wird.
- Verfahren nach Anspruch 4, dadurch gekennzeichnet, daß mittels des von der Friktionstrommel auf die Spule übertragenen Antriebsmomentes die Friktionskraft bestimmt wird, die als Funktion des Schlupfes erfaßt und zur Bewertung des Reibungsverhaltens der Oberfläche der Kreuzspule herangezogen wird.
- Verfahren nach Anspruch 5, dadurch gekennzeichnet, daß auf das Antriebssystem Friktionstrommel/Kreuzspule wirkende Verlust - und Belastungsmomente während der schlupffreien Auslaufphasen gemessen und bei der Bestimmung der Friktionskraft berücksichtigt werden.
- Verfahren nach Anspruch 4, dadurch gekennzeichnet, daß die Fadenzugkraft gemessen wird und die Schlupfgröße von Änderungen der Fadenzugkraft während der Spulenreise bereinigt wird.
- Verfahren nach Anspruch 4, dadurch gekennzeichnet, daß der Ablageversatz, der einer Verschiebung eines Umkehrpunktes der Fadenablage auf einer Umfangslinie der Spule gegenüber dem vorhergehenden Umkehrpunkt entspricht, als Funktion vom Schlupf ermittelt und zur Bewertung des Reibungsverhaltens der Oberfläche der Kreuzspule auf der Friktionstrommel herangezogen wird.
- Verfahren nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, daß das Reibungsverhalten der Oberfläche der Kreuzspulen auf den Friktionstrommeln an einer vorgebbaren Anzahl von Spulstellen der Spulmaschine gemittelt wird und als Vergleichsbasis für das Reibungsverhalten an jeder einzelnen Spulstelle dient.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19757009 | 1997-12-20 | ||
DE19757009A DE19757009A1 (de) | 1997-12-20 | 1997-12-20 | Verfahren zur Überwachung des Paraffinauftrags auf einen laufenden Faden |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0943575A2 true EP0943575A2 (de) | 1999-09-22 |
EP0943575A3 EP0943575A3 (de) | 2000-05-10 |
EP0943575B1 EP0943575B1 (de) | 2003-05-21 |
Family
ID=7852828
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98121067A Expired - Lifetime EP0943575B1 (de) | 1997-12-20 | 1998-11-06 | Verfahren zur Überwachung des Paraffinauftrags auf einen laufenden Faden |
Country Status (4)
Country | Link |
---|---|
US (1) | US6039282A (de) |
EP (1) | EP0943575B1 (de) |
JP (1) | JPH11240674A (de) |
DE (2) | DE19757009A1 (de) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19915529A1 (de) * | 1999-04-07 | 2000-10-12 | Schlafhorst & Co W | Vorrichtung zum Wickeln konischer Spulen bei konstanter Fadenliefergeschwindigkeit |
US20040098962A1 (en) * | 2002-11-25 | 2004-05-27 | Giuliano Sostegni | Apparatus for the production of chenille |
DE10321774A1 (de) * | 2003-05-15 | 2004-12-02 | Saurer Gmbh & Co. Kg | Verfahren und Vorrichtung zum Betreiben einer Spulstelle einer Kreuzspulen herstellenden Textilmaschine |
DE102010002301A1 (de) * | 2010-02-24 | 2011-08-25 | SSM Schärer Schweiter Mettler AG | Garnschlichtverfahren |
JP2014040325A (ja) * | 2012-07-27 | 2014-03-06 | Murata Mach Ltd | 駆動状態検出装置、巻取ユニット、巻取機、紡績ユニット及び紡績機 |
DE102012023557A1 (de) * | 2012-12-01 | 2014-06-05 | Saurer Germany Gmbh & Co. Kg | Verfahren zum Steuern der Beschleunigung einer Spulenantriebswalze |
DE102012023558A1 (de) * | 2012-12-01 | 2014-06-05 | Saurer Germany Gmbh & Co. Kg | Verfahren zum Regeln der Beschleunigung einer Spulenantriebswalze |
DE102013016644A1 (de) * | 2013-10-05 | 2015-04-09 | Saurer Germany Gmbh & Co. Kg | Verfahren zum Betreiben einer Arbeitsstelle einer Kreuzspulen herstellenden Textilmaschine |
CN111549462A (zh) * | 2020-04-29 | 2020-08-18 | 山东宏业纺织股份有限公司 | 一种纱线涂覆装置 |
DE102021120371A1 (de) * | 2021-08-05 | 2023-02-09 | Multivac Sepp Haggenmüller Se & Co. Kg | Verpackungsmaschine mit folientransporteinrichtung sowie verfahren |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3703869A1 (de) * | 1987-02-07 | 1988-08-18 | Schlafhorst & Co W | Verfahren zum ueberwachen und/oder steuern des spulvorgangs und spulstelle zum ausfuehren des verfahrens |
EP0399243B1 (de) * | 1989-05-24 | 1994-11-30 | W. SCHLAFHORST AG & CO. | Verfahren und Vorrichtung zum Vermeiden von Bildwicklungen beim Wickeln einer Kreuzspule |
DE19547870A1 (de) * | 1995-12-21 | 1997-06-26 | Schlafhorst & Co W | Verfahren und Vorrichtung zur Überwachung der Funktion einer Paraffiniereinrichtung |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH661594A5 (de) * | 1982-11-16 | 1987-07-31 | Pretema Ag | Verfahren und vorrichtung zum feststellen des reibungsverhaltens von langgestreckten gebilden, insbesondere von garnen. |
DE3521152C2 (de) * | 1985-06-13 | 1996-05-30 | Schlafhorst & Co W | Verfahren und Vorrichtung zum Vermeiden von Bildwicklungen beim Wickeln einer Kreuzspule |
DE4001793C1 (en) * | 1990-01-23 | 1991-03-07 | Wilhelm Hegenscheidt Gmbh, 5140 Erkelenz, De | Ascertaining slip between railway wheel and drive friction roller - applying latter to bogie during machining for re-profiling |
DE4010469A1 (de) * | 1990-03-31 | 1991-10-02 | Schlafhorst & Co W | Verfahren und einrichtung zum ueberwachen der paraffinierung eines laufenden fadens |
DE4030892C2 (de) * | 1990-09-29 | 2000-06-29 | Schlafhorst & Co W | Spuleinrichtung an einer Textilmaschine |
DE4226265A1 (de) * | 1992-08-08 | 1994-02-10 | Schlafhorst & Co W | Paraffiniereinrichtung |
DE19625513A1 (de) * | 1996-06-26 | 1998-01-02 | Schlafhorst & Co W | Verfahren und Vorrichtung zum Herstellen von Kreuzspulen |
DE19625510A1 (de) * | 1996-06-26 | 1998-01-02 | Schlafhorst & Co W | Verfahren und Vorrichtung zum Herstellen einer Spule |
DE19633256C1 (de) * | 1996-08-17 | 1997-10-09 | Mayer Textilmaschf | Vorrichtung zum Einstellen der Zugspannung eines Fadens bei dessen Ab- oder Aufwicklung von einer bzw. auf eine Spule |
-
1997
- 1997-12-20 DE DE19757009A patent/DE19757009A1/de not_active Withdrawn
-
1998
- 1998-11-06 EP EP98121067A patent/EP0943575B1/de not_active Expired - Lifetime
- 1998-11-06 DE DE59808452T patent/DE59808452D1/de not_active Expired - Fee Related
- 1998-12-21 US US09/217,007 patent/US6039282A/en not_active Expired - Fee Related
- 1998-12-21 JP JP10363517A patent/JPH11240674A/ja active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3703869A1 (de) * | 1987-02-07 | 1988-08-18 | Schlafhorst & Co W | Verfahren zum ueberwachen und/oder steuern des spulvorgangs und spulstelle zum ausfuehren des verfahrens |
EP0399243B1 (de) * | 1989-05-24 | 1994-11-30 | W. SCHLAFHORST AG & CO. | Verfahren und Vorrichtung zum Vermeiden von Bildwicklungen beim Wickeln einer Kreuzspule |
DE19547870A1 (de) * | 1995-12-21 | 1997-06-26 | Schlafhorst & Co W | Verfahren und Vorrichtung zur Überwachung der Funktion einer Paraffiniereinrichtung |
Also Published As
Publication number | Publication date |
---|---|
DE19757009A1 (de) | 1999-06-24 |
DE59808452D1 (de) | 2003-06-26 |
JPH11240674A (ja) | 1999-09-07 |
US6039282A (en) | 2000-03-21 |
EP0943575B1 (de) | 2003-05-21 |
EP0943575A3 (de) | 2000-05-10 |
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