EP2284303A1 - Rotary creel of a sample warping machine, sample warping machine and method for measuring a bobbin diameter - Google Patents
Rotary creel of a sample warping machine, sample warping machine and method for measuring a bobbin diameter Download PDFInfo
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- EP2284303A1 EP2284303A1 EP09010358A EP09010358A EP2284303A1 EP 2284303 A1 EP2284303 A1 EP 2284303A1 EP 09010358 A EP09010358 A EP 09010358A EP 09010358 A EP09010358 A EP 09010358A EP 2284303 A1 EP2284303 A1 EP 2284303A1
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- European Patent Office
- Prior art keywords
- sensor
- rotary gate
- machine
- filling
- coil
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- 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
- B65H63/086—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 completion of unwinding of a package
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- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02H—WARPING, BEAMING OR LEASING
- D02H3/00—Warping machines
- D02H3/04—Sample warpers
Definitions
- the invention relates to a rotary gate of a sample warping machine with a support rotatably mounted about a rotation axis, on which a plurality of coil receptacles are arranged, wherein a sensor arrangement is provided, with a degree of filling arranged in the coil receiving coils can be determined.
- the invention relates to a sample warping machine with a warping drum, thread guides, which are rotatable about the axis of the warping drum, and a rotary gate.
- the invention also relates to a method for measuring a bobbin diameter of bobbins of a sample warping machine, wherein the bobbins are arranged in bobbin holders on a carrier rotatably mounted about a rotation axis.
- Sample chain warping machines are typically used for the production of pattern chains or so-called short chains.
- threads are wound onto a warping drum with a relatively large circumference, wherein the warping drum is held against rotation during winding.
- a warping drum has a relatively large circumference of, for example, about 7 meters.
- Distributed over the circumference several conveyor belts are arranged, which run parallel to the axis of the warping drum.
- the threads are deposited by means of thread guides on the conveyor belts, which rotate about the axis of the warping drum.
- the threads are removed from a gate. If several threads are to be placed simultaneously around the circumference of the warping drum, a so-called rotary gate is required, which rotates synchronously with the yarn guides. If you do not want to store individual threads on the circumference of the warping drum, you can take them out of the warping process and wrap, for example, a soul or center line, which is arranged in the axis of the warping drum.
- the thread consumption depends on the pattern of the pattern or short chain to be generated.
- the withdrawn from the coils from the creel threads are thus consumed in different lengths. This can cause a spool to drain before the chain is finished. Accordingly, monitoring of the yarn supply on the bobbins is usually required. If a spool has run out, the sample warping machine must be stopped. The corresponding coil must then be replaced. You can see the end of the thread of the expired coil with the beginning knot the thread of the new spool to ensure, so to speak, a continuous operation.
- the monitoring of the thread supply may e.g. done by an operator.
- the rotational speed of the rotary gate must then be kept relatively low so that a user can visually monitor the coils.
- the operation of such a pattern warping machine thus depends greatly on the ability of the operator to interrupt the warping process at the right times. A break that is too early will waste thread material. Too late interruption generates a malfunction during operation.
- the sensor arrangement may, for example, comprise non-contact sensors, wherein the sensors are assigned either to each coil or each coil row to a sensor which is fixedly connected to the machine frame of the rotary gate.
- the coil diameter is therefore measured only at an axial point of the respective coil.
- a relatively large number of sensors are required, in particular in the case of several rows of coils.
- the invention is based on the object to increase the accuracy of the measurement.
- the sensor arrangement has at least one sensor which is movable parallel to the axis of rotation.
- the movement of the sensor it is possible to detect the diameter of the respective coil along the axis of rotation several times, so that a degree of filling of the coil can be determined with high accuracy.
- a measurement can also take place during the movement of the sensor, so that the measurement results are available in a relatively short time.
- the senor is advantageously arranged on a slide rail, which is arranged on a machine frame, on which the carrier is rotatably mounted.
- the movement of the sensor on the slide can be done relatively low friction and smooth, ensuring a fast and smooth movement of the sensor is guaranteed.
- the radial position of the sensor ie the position perpendicular to the axis of rotation, at any time exactly defined. This contributes to the good accuracy of the measurement of the degree of filling. With the sensor arrangement, a degree of filling or a coil diameter during the movement of the sensor can thus be determined.
- the senor is designed as a non-contact sensor, in particular as a laser sensor.
- the measurement of the degree of filling can therefore without mechanical Contact between the coils and the sensor done. Accordingly, no signs of wear are to be expected. The reliability and accuracy of the measurement is therefore relatively high.
- the sensor is preferably arranged on the slide rail such that a laser beam strikes a surface of the coils almost perpendicularly.
- the term "vertical” is not to be understood in the mathematically exact sense. Rather, even small deviations are possible. These are also not completely avoid, because the carrier continues to rotate during the measurement. However, the sensor should be arranged in such an angle that the laser beam intersects the axis of rotation, that is, the laser beam is located on an extension of the radius of the rotatably mounted carrier.
- the coil receptacles are preferably arranged in succession in at least two groups along the axis of rotation of the carrier, the sensor being movable from a first measuring position, which is assigned to a first group, to a second measuring position, which is assigned to a second group. Even with multiple coil groups then a single sensor for measuring the degree of filling is sufficient. Although then at least two rounds of the carrier are required to measure all coils, but this is usually sufficient, since the measurement can be done with a relatively high accuracy. Thus, it can be predicted with sufficient certainty whether the thread lying on the respective spool is still sufficient for at least two revolutions of the carrier. By using only a single sensor results in a relatively inexpensive arrangement, wherein the signal transmission can be relatively simple, since no collision can occur with signals from other sensors.
- the rotary gate preferably has a housing which has openings at least in the region of the measuring positions.
- the housing surrounds the rotatably mounted carrier and thus protects it against external influences. A contamination of the rotary gate and the threads can be as good as excluded. The risk that, for example, an object leads to damage of the rotary gate is minimized by the housing.
- the sensor can be arranged outside the housing, since it can measure through the openings in the region of the measuring positions.
- the housing itself can thereby be arranged relatively tightly around the rotatably mounted carrier, so that not unnecessarily much space is required.
- the sensor arrangement is connected to a machine control, which calculates a residual length of a thread on the basis of the coil diameter.
- the calculation of the residual length of a thread based on a measured coil diameter can be done with relatively high accuracy.
- the residual length of the thread corresponds to the degree of filling of the coil.
- the machine controller stops a sample warping machine when the degree of filling is less than a desired value.
- the sensor assembly is capable of determining, with sufficient reliability, the degree of filling of the spool to determine whether a spool is idling threatening. If so, the sample warper is automatically stopped. This will allow the bobbin to be replaced at exactly the right time, leaving too little thread on the bobbin. At the same time it is ensured that the bobbin does not run empty and produces a "wild thread breakage".
- the determination of the desired value can be determined in dependence on a pattern to be generated. This can be done, for example, by connecting the machine control to a pattern control. Since the pattern control dictates how much thread it takes to make a particular pattern, the thread stock on each bobbin can be optimally utilized. At the same time it can be ensured that a knot-free or at least knot-poor pattern chain is generated.
- the object is achieved in a sample warping machine of the type mentioned above in that it has such a rotary gate.
- the sample warping machine preferably has an insertion machine which is connected to the sensor arrangement.
- an automatic bobbin change can take place, wherein the beginning of the thread of a new bobbin is connected to the end of the thread of the empty bobbin. This requires that the end of the thread of the empty Spool is still available, so the empty spool still has a residual thread.
- the placement machine can then cut through this residual thread to produce a thread end that can be connected to the thread beginning of the new coil. It is thus a fully automatic production of a pattern or short chain possible.
- the object is achieved in a method of the type mentioned in that a sensor for measuring the degree of filling of the coil is moved parallel to the axis of rotation.
- the sensor By the movement of the sensor, it is possible to determine, for example, a diameter of the coils at a plurality of axially adjacent points.
- the diameter of the coils is a measure of the degree of filling or for the remaining thread length.
- a measurement takes place during the movement of the sensor. So it can be done relatively quickly consecutive measurements. It is thus possible to measure the coil diameter of a coil directly at a plurality of axially adjacent measuring points without the need for several revolutions of the carrier. Thus, during one rotation of the carrier all coils of a group can be detected.
- the sample warping machine is stopped when the degree of filling is less than a desired value. This ensures that no wild thread break occurs, but that there is always a sufficient degree of filling of the coils.
- a measure of the degree of filling serves, for example, the remaining length of the thread, which is still wound on the spool. This residual length of the thread can be calculated on the basis of the coil diameter.
- the desired value is determined as a function of a pattern to be generated.
- the setpoint can therefore vary. This makes it possible to make the best possible use of the thread supply located on the bobbin. At the same time, nodes in the pattern length can be avoided. Accordingly, one can easily create a knot-free or knot-poor pattern chain.
- a residual length of the thread is wound onto a central cord.
- This central cord which is also called “soul” is usually used for filing the threads, if they are not stored on the warping drum.
- the remaining lengths are wound on the center line, it is ensured that the nodes that are required to connect the one thread end to the thread end of the new coil, are wound on the center line. This ensures that a knot-free pattern chain is generated.
- a sample warping machine 1 is shown with a warping drum 2, wherein a plurality of conveyor belts 3 are arranged on the circumference of the warping drum 2.
- the conveyor belts 3 are parallel to an axis 4 of the warping drum 2.
- the warping drum 2 is rotatably mounted. When winding threads, however, it is blocked against rotation.
- a rotary gate 5 is arranged. From the rotary gate 5 threads 6 are deducted, which can be stored with the help of yarn guides 7 on the conveyor belts 3.
- the yarn guides 7 can be pivoted in the axial direction of the warping drum 2 via the conveyor belts 3. In this case, the threads 6 are deposited on the conveyor belts 3.
- the yarn guide 7 can also be pivoted so that they are the threads 6 on a Place middle cord 8, which runs approximately in the axis 4 of the warping drum 2.
- the rotary gate has at least one support 9, 10, on which a plurality of coil housings 11 are arranged. In each coil receptacle 11, a coil 12, 13 are arranged. From each spool 12, 13, a thread 6 is then withdrawn and fed to a corresponding yarn guide 7.
- the rotary gate 5 has a machine frame 14, on which the carrier 9 is rotatably mounted.
- a rotation axis of the carrier 9 corresponds to the axis 4 of the warping drum 2.
- the rotary gate 5 has a housing 15, which surrounds the carrier 9 with the coils 12, 13 which are held in the coil holders 11.
- openings 16, 17 are arranged, through which by means of a sensor arrangement 18 a degree of filling of the coils 12, 13 can be determined.
- the sensor arrangement 18 has at least one sensor 19, which is arranged movably on a slide rail 20.
- the sensor 19 is thus axially movable on the slide rail 20.
- the slide rail 20 is attached to the machine frame 14.
- Fig. 3 the rotary gate 5 is shown in front view.
- the carrier 9 has a total of 24 coil holders 11 each having a coil 12. These coil holders 11 are uniform over the circumference of the rotary gate 5 distributed.
- the sensor 19 of the sensor arrangement 18 is designed as a contactless laser sensor. He is attached to the slide rail 20 so that the laser beam is perpendicular to the axis of rotation of the carrier 9. This results in a measurement of the coil diameter perpendicular to the coil surface.
- the sensor 19 is movable on the slide rail 20 parallel to the axis of rotation, ie in the representation according to Fig. 3 out of the drawing plane. This makes it possible to measure a coil diameter at a plurality of axially adjacent positions. With the help of the coil diameter, a reliable statement about the degree of filling can be obtained.
- Fig. 4 the sensor arrangement 18 is shown isolated.
- the sensor 19 is arranged movable on the slide rail 20.
- the slide rail 20 is mounted on an angle 21, which is connectable via a mounting geometry 22 with the machine frame 14.
- the sensor assembly 18 can thus be easily attached to existing rotary creel 5, since no further adaptation of the rotary gate 5 is required.
- the angle piece 21 serves to arrange the sensor 19 in an angular position in which its laser beam can impinge perpendicularly on surfaces of the coils.
- the laser is arranged at a 60 ° angle to a vertical. This makes it possible to place the sensor arrangement relatively far down. It is not necessary to arrange them directly at the height of the axis of rotation of the carrier 9. This is particularly advantageous in terms of better accessibility.
- a connecting piece 23 is still arranged, which is fixedly connected to the sensor 19 and for example serves as a compensation element.
- the connector 23 may have damping properties to dampen vibrations and thus increase the accuracy of the measurement.
- Fig. 5 a further view of the sensor assembly 19 is shown. It can be seen that at each end of the slide rail 20, an angle 21 is arranged. As a result, a secure attachment of the slide rail on the machine frame 14 is possible.
- the possible travel of the sensor 19, by the length of the slide rail 20th is set is selected so that the sensor can detect multiple axially adjacent coil groups.
- the measurement can then take place at full speed of the sensor 19.
- a degree of filling or a residual length of a wound on the coil tape can be calculated.
- the sample warping machine is stopped.
- the respective coil can then be displayed, for example.
- the degree of filling of the coils can also be determined reliably during operation of the sample warping machine. An emptying of the coils and thus losing the thread end in the pattern chain is almost impossible.
- a coil diameter of the coils can be determined very accurately and thus an available residual length of the thread can be predicted very accurately. This makes it possible to use the available thread length of the respective coil as well as possible. At the same time it is ensured that a thread end is not lost in the pattern chain, so that an automatic assembly with a placement machine is possible.
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Abstract
Description
Die Erfindung betrifft ein Drehgatter einer Musterkettenschärmaschine mit einem um eine Rotationsachse drehbar gelagerten Träger, auf dem mehrere Spulenaufnahmen angeordnet sind, wobei eine Sensoranordnung vorgesehen ist, mit der ein Befüllungsgrad von in den Spulenaufnahmen angeordneten Spulen ermittelbar ist.The invention relates to a rotary gate of a sample warping machine with a support rotatably mounted about a rotation axis, on which a plurality of coil receptacles are arranged, wherein a sensor arrangement is provided, with a degree of filling arranged in the coil receiving coils can be determined.
Ferner betrifft die Erfindung eine Musterkettenschärmaschine mit einer Schärtrommel, Fadenführern, die um die Achse der Schärtrommel drehbar sind, und einem Drehgatter.Furthermore, the invention relates to a sample warping machine with a warping drum, thread guides, which are rotatable about the axis of the warping drum, and a rotary gate.
Die Erfindung betrifft auch ein Verfahren zum Messen eines Spulendurchmessers von Spulen einer Musterkettenschärmaschine, wobei die Spulen in Spulenaufnahmen auf einem um eine Rotationsachse drehbar gelagerten Träger angeordnet sind.The invention also relates to a method for measuring a bobbin diameter of bobbins of a sample warping machine, wherein the bobbins are arranged in bobbin holders on a carrier rotatably mounted about a rotation axis.
Musterkettenschärmaschinen werden in der Regel für die Erzeugung von Musterketten oder sogenannten Kurzketten verwendet. Dabei werden Fäden auf eine Schärtrommel mit einem relativ großen Umfang aufgewickelt, wobei die Schärtrommel während des Aufwickelns drehfest gehalten ist. Eine Schärtrommel weist einen relativ großen Umfang von beispielsweise etwa 7 Metern auf. Über den Umfang verteilt sind mehrere Transportbänder angeordnet, die parallel zur Achse der Schärtrommel verlaufen. Die Fäden werden mit Hilfe von Fadenführern auf den Transportbändern abgelegt, die um die Achse der Schärtrommel rotieren. Die Fäden werden dabei aus einem Gatter abgezogen. Wenn mehrere Fäden gleichzeitig um den Umfang der Schärtrommel gelegt werden sollen, ist ein sogenanntes Drehgatter erforderlich, das sich synchron mit den Fadenführern dreht. Wenn man einzelne Fäden nicht auf dem Umfang der Schärtrommel ablegen will, kann man sie aus dem Schärprozess herausnehmen und beispielsweise um eine Seele oder Mittelschnur wickeln, die in der Achse der Schärtrommel angeordnet ist.Sample chain warping machines are typically used for the production of pattern chains or so-called short chains. In this case, threads are wound onto a warping drum with a relatively large circumference, wherein the warping drum is held against rotation during winding. A warping drum has a relatively large circumference of, for example, about 7 meters. Distributed over the circumference several conveyor belts are arranged, which run parallel to the axis of the warping drum. The threads are deposited by means of thread guides on the conveyor belts, which rotate about the axis of the warping drum. The threads are removed from a gate. If several threads are to be placed simultaneously around the circumference of the warping drum, a so-called rotary gate is required, which rotates synchronously with the yarn guides. If you do not want to store individual threads on the circumference of the warping drum, you can take them out of the warping process and wrap, for example, a soul or center line, which is arranged in the axis of the warping drum.
Der Fadenverbrauch ist abhängig vom Muster der zu erzeugenden Muster- oder Kurzkette. Die von den Spulen aus dem Drehgatter abgezogenen Fäden werden also in unterschiedlichen Längen verbraucht. Dies kann dazu führen, dass eine Spule leergelaufen ist, bevor die Kette fertig ist. Dementsprechend ist in der Regel eine Überwachung des Fadenvorrats auf den Spulen erforderlich. Wenn eine Spule leergelaufen ist, muss die Musterkettenschärmaschine angehalten werden. Die entsprechende Spule muss dann ausgetauscht werden. Dabei kann man das Ende des Fadens der abgelaufenen Spule mit dem Beginn des Fadens der neuen Spule verknoten, um sozusagen einen kontinuierlichen Betrieb sicherzustellen.The thread consumption depends on the pattern of the pattern or short chain to be generated. The withdrawn from the coils from the creel threads are thus consumed in different lengths. This can cause a spool to drain before the chain is finished. Accordingly, monitoring of the yarn supply on the bobbins is usually required. If a spool has run out, the sample warping machine must be stopped. The corresponding coil must then be replaced. You can see the end of the thread of the expired coil with the beginning knot the thread of the new spool to ensure, so to speak, a continuous operation.
Die Überwachung des Fadenvorrats kann z.B. durch eine Bedienperson erfolgen. Allerdings muss die Drehgeschwindigkeit des Drehgatters dann relativ gering gehalten werden, damit ein Benutzer die Spulen visuell überwachen kann. Der Betrieb einer derartigen Musterkettenschärmaschine hängt also stark von den Fähigkeiten der Bedienungsperson ab, den Schärvorgang zu den richtigen Zeiten zu unterbrechen. Eine Unterbrechung, die zu früh erfolgt, verschwendet Fadenmaterial. Eine zu späte Unterbrechung erzeugt eine Störung im Betrieb.The monitoring of the thread supply may e.g. done by an operator. However, the rotational speed of the rotary gate must then be kept relatively low so that a user can visually monitor the coils. The operation of such a pattern warping machine thus depends greatly on the ability of the operator to interrupt the warping process at the right times. A break that is too early will waste thread material. Too late interruption generates a malfunction during operation.
In der nachveröffentlichten
Die Sensoranordnung kann beispielsweise berührungslose Sensoren aufweisen, wobei die Sensoren entweder jeder Spule zugeordnet werden oder jeder Spulenreihe ein Sensor, der fest mit dem Maschinengestell des Drehgatters verbunden ist. Durch diese Sensoren wird also der Spulendurchmessers nur an einer axialen Stelle der jeweiligen Spule gemessen. Dabei sind insbesondere bei mehreren Spulenreihen relativ viele Sensoren erforderlich. Der Erfindung liegt nun die Aufgabe zugrunde, die Genauigkeit der Messung zu erhöhen.The sensor arrangement may, for example, comprise non-contact sensors, wherein the sensors are assigned either to each coil or each coil row to a sensor which is fixedly connected to the machine frame of the rotary gate. By means of these sensors, the coil diameter is therefore measured only at an axial point of the respective coil. In this case, a relatively large number of sensors are required, in particular in the case of several rows of coils. The invention is based on the object to increase the accuracy of the measurement.
Erfindungsgemäß wird diese Aufgabe bei einem Drehgatter der eingangs genannten Art dadurch gelöst, dass die Sensoranordnung mindestens einen Sensor aufweist, der parallel zur Rotationsachse bewegbar ist.This object is achieved in a rotary gate of the type mentioned above in that the sensor arrangement has at least one sensor which is movable parallel to the axis of rotation.
Durch die Bewegung des Sensors ist es möglich, den Durchmesser der jeweiligen Spule entlang der Rotationsachse mehrmals zu erfassen, so dass ein Befüllungsgrad der Spule mit hoher Genauigkeit ermittelbar ist. Dabei kann eine Messung auch während der Bewegung des Sensors erfolgen, so dass in relativ kurzer Zeit die Messergebnisse zur Verfügung stehen.By the movement of the sensor, it is possible to detect the diameter of the respective coil along the axis of rotation several times, so that a degree of filling of the coil can be determined with high accuracy. In this case, a measurement can also take place during the movement of the sensor, so that the measurement results are available in a relatively short time.
Dabei ist vorteilhafterweise der Sensor auf einer Gleitschiene angeordnet, die an einem Maschinengestell angeordnet ist, an dem der Träger drehbar gelagert ist. Die Bewegung des Sensors auf der Gleitschiene kann relativ reibungsarm und ruckfrei erfolgen, wodurch eine schnelle und gleichmäßige Bewegung des Sensors gewährleistet ist. Dabei ist auch die radiale Lage des Sensors, also die Lage senkrecht zur Rotationsachse, jederzeit exakt definiert. Dies trägt zur guten Genauigkeit der Messung des Befüllungsgrades bei. Mit der Sensoranordnung ist so ein Befüllungsgrad bzw. ein Spulendurchmesser während der Bewegung des Sensors ermittelbar.In this case, the sensor is advantageously arranged on a slide rail, which is arranged on a machine frame, on which the carrier is rotatably mounted. The movement of the sensor on the slide can be done relatively low friction and smooth, ensuring a fast and smooth movement of the sensor is guaranteed. In this case, the radial position of the sensor, ie the position perpendicular to the axis of rotation, at any time exactly defined. This contributes to the good accuracy of the measurement of the degree of filling. With the sensor arrangement, a degree of filling or a coil diameter during the movement of the sensor can thus be determined.
Vorzugsweise ist der Sensor als berührungslos arbeitender Sensor, insbesondere als Lasersensor, ausgebildet. Die Messung des Befüllungsgrades kann also ohne mechanischen Kontakt zwischen den Spulen und dem Sensor erfolgen. Dementsprechend sind keine Verschleißerscheinungen zu erwarten. Die Zuverlässigkeit und Genauigkeit der Messung ist also relativ hoch.Preferably, the sensor is designed as a non-contact sensor, in particular as a laser sensor. The measurement of the degree of filling can therefore without mechanical Contact between the coils and the sensor done. Accordingly, no signs of wear are to be expected. The reliability and accuracy of the measurement is therefore relatively high.
Vorzugsweise ist der Sensor derart auf der Gleitschiene angeordnet, dass ein Laserstrahl nahezu senkrecht auf eine Oberfläche der Spulen trifft. Der Ausdruck "senkrecht" ist dabei nicht im mathematisch exakten Sinn zu verstehen. Vielmehr sind auch kleine Abweichungen möglich. Diese sind auch nicht ganz zu vermeiden, da sich der Träger während der Messung weiterdreht. Der Sensor sollte allerdings in einem derartigen Winkel angeordnet sein, dass der Laserstrahl die Rotationsachse schneidet, der Laserstrahl also auf einer Verlängerung des Radius des drehbar gelagerten Trägers liegt.The sensor is preferably arranged on the slide rail such that a laser beam strikes a surface of the coils almost perpendicularly. The term "vertical" is not to be understood in the mathematically exact sense. Rather, even small deviations are possible. These are also not completely avoid, because the carrier continues to rotate during the measurement. However, the sensor should be arranged in such an angle that the laser beam intersects the axis of rotation, that is, the laser beam is located on an extension of the radius of the rotatably mounted carrier.
Vorzugsweise sind die Spulenaufnahmen in mindestens zwei Gruppen entlang der Rotationsachse des Trägers hintereinander angeordnet, wobei der Sensor von einer ersten Messposition, die einer ersten Gruppe zugeordnet ist, zu einer zweiten Messposition, die einer zweiten Gruppe zugeordnet ist, bewegbar ist. Auch bei mehreren Spulengruppen ist dann ein einziger Sensor zur Messung des Befüllungsgrades ausreichend. Zwar sind zur Messung aller Spulen dann mindestens zwei Umläufe des Trägers erforderlich, dies ist aber in der Regel ausreichend, da die Messung mit einer relativ hohen Genauigkeit erfolgen kann. So kann ausreichend sicher vorhergesagt werden, ob der auf der jeweiligen Spule liegende Faden noch für mindestens zwei Umdrehungen des Trägers ausreichend ist. Durch die Verwendung nur eines einzigen Sensors ergibt sich eine relativ kostengünstige Anordnung, wobei auch die Signalübertragung relativ einfach erfolgen kann, da keine Kollision mit Signalen anderer Sensoren erfolgen kann.The coil receptacles are preferably arranged in succession in at least two groups along the axis of rotation of the carrier, the sensor being movable from a first measuring position, which is assigned to a first group, to a second measuring position, which is assigned to a second group. Even with multiple coil groups then a single sensor for measuring the degree of filling is sufficient. Although then at least two rounds of the carrier are required to measure all coils, but this is usually sufficient, since the measurement can be done with a relatively high accuracy. Thus, it can be predicted with sufficient certainty whether the thread lying on the respective spool is still sufficient for at least two revolutions of the carrier. By using only a single sensor results in a relatively inexpensive arrangement, wherein the signal transmission can be relatively simple, since no collision can occur with signals from other sensors.
Vorzugsweise weist das Drehgatter ein Gehäuse auf, das zumindest im Bereich der Messpositionen Öffnungen aufweist. Das Gehäuse umgibt dabei den drehbar gelagerten Träger und schützt diesen so vor äußeren Einflüssen. Eine Verschmutzung des Drehgatters und der Fäden kann dadurch so gut wie ausgeschlossen werden. Auch die Gefahr, dass beispielsweise ein Gegenstand zu einer Beschädigung des Drehgatters führt, wird durch das Gehäuse minimiert. Der Sensor kann dabei außerhalb des Gehäuses angeordnet sein, da er durch die Öffnungen im Bereich der Messpositionen messen kann. Das Gehäuse selbst kann dadurch relativ eng um den drehbar gelagerten Träger angeordnet werden, so dass nicht unnötig viel Bauraum erforderlich ist.The rotary gate preferably has a housing which has openings at least in the region of the measuring positions. The housing surrounds the rotatably mounted carrier and thus protects it against external influences. A contamination of the rotary gate and the threads can be as good as excluded. The risk that, for example, an object leads to damage of the rotary gate is minimized by the housing. The sensor can be arranged outside the housing, since it can measure through the openings in the region of the measuring positions. The housing itself can thereby be arranged relatively tightly around the rotatably mounted carrier, so that not unnecessarily much space is required.
Vorteilhafterweise ist die Sensoranordnung mit einer Maschinensteuerung verbunden, die anhand des Spulendurchmessers eine Restlänge eines Fadens berechnet. Die Berechnung der Restlänge eines Fadens anhand eines gemessenen Spulendurchmessers kann mit relativ hoher Genauigkeit erfolgen. Die Restlänge des Fadens entspricht dabei dem Befüllungsgrad der Spule.Advantageously, the sensor arrangement is connected to a machine control, which calculates a residual length of a thread on the basis of the coil diameter. The calculation of the residual length of a thread based on a measured coil diameter can be done with relatively high accuracy. The residual length of the thread corresponds to the degree of filling of the coil.
Vorteilhafterweise hält die Maschinensteuerung eine Musterkettenschärmaschine an, wenn der Befüllungsgrad kleiner als ein Sollwert ist. Wie oben ausgeführt, ist die Sensoranordnung in der Lage, mit ausreichender Zuverlässigkeit den Befüllungsgrad der Spule zu bestimmen und damit festzustellen, ob eine Spule leerzulaufen droht. Wenn dies der Fall ist, wird die Musterkettenschärmaschine automatisch angehalten. Dadurch kann die Spule genau zum richtigen Zeitpunkt ausgetauscht werden, wobei nicht zu viel Fadenmaterial auf der Spule verbleibt. Gleichzeitig wird sichergestellt, dass die Spule nicht leerläuft und einen "wilden Fadenbruch" erzeugt. Die Bestimmung des Sollwerts kann dabei in Abhängigkeit von einem zu erzeugenden Muster bestimmt werden. Dies kann beispielsweise dadurch erfolgen, dass die Maschinensteuerung mit einer Mustersteuerung verbunden ist. Da die Mustersteuerung vorgibt, wie viel Faden sie zur Herstellung eines bestimmten Musters benötigt, kann der auf jeder Spule befindliche Fadenvorrat optimal ausgenutzt werden. Gleichzeitig kann sichergestellt werden, dass eine knotenfreie oder zumindest knotenarme Musterkette erzeugt wird.Advantageously, the machine controller stops a sample warping machine when the degree of filling is less than a desired value. As stated above, the sensor assembly is capable of determining, with sufficient reliability, the degree of filling of the spool to determine whether a spool is idling threatening. If so, the sample warper is automatically stopped. This will allow the bobbin to be replaced at exactly the right time, leaving too little thread on the bobbin. At the same time it is ensured that the bobbin does not run empty and produces a "wild thread breakage". The determination of the desired value can be determined in dependence on a pattern to be generated. This can be done, for example, by connecting the machine control to a pattern control. Since the pattern control dictates how much thread it takes to make a particular pattern, the thread stock on each bobbin can be optimally utilized. At the same time it can be ensured that a knot-free or at least knot-poor pattern chain is generated.
Die Aufgabe wird bei einer Musterkettenschärmaschine der eingangs genannten Art dadurch gelöst, dass sie ein derartiges Drehgatter aufweist.The object is achieved in a sample warping machine of the type mentioned above in that it has such a rotary gate.
Durch die automatische Überwachung des Befüllungsgrades der Spulen im Drehgatter kann der Fadenvorrat der Spulen gut ausgenutzt werden. Gleichzeitig wird das Risiko von Störungen gering gehalten.By automatically monitoring the degree of filling of the coils in the rotary gate of the thread supply of the coils can be used well. At the same time, the risk of disruption is kept low.
Vorzugsweise weist die Musterkettenschärmaschine einen Bestückungsautomaten auf, der mit der Sensoranordnung verbunden ist. Mit Hilfe des Bestückungsautomaten kann ein automatischer Spulenwechsel erfolgen, wobei der Anfang des Fadens einer neuen Spule mit dem Ende des Fadens der leergelaufenen Spule verbunden wird. Dafür ist erforderlich, dass das Ende des Fadens der leergelaufenen Spule noch verfügbar ist, die leergelaufene Spule also noch einen Restfaden aufweist. Der Bestückungsautomat kann dann diesen Restfaden durchtrennen, um ein Fadenende zu erzeugen, das mit dem Fadenanfang der neuen Spule verbunden werden kann. Es ist somit eine vollautomatische Herstellung einer Muster- oder Kurzkette möglich.The sample warping machine preferably has an insertion machine which is connected to the sensor arrangement. With the help of the placement machine, an automatic bobbin change can take place, wherein the beginning of the thread of a new bobbin is connected to the end of the thread of the empty bobbin. This requires that the end of the thread of the empty Spool is still available, so the empty spool still has a residual thread. The placement machine can then cut through this residual thread to produce a thread end that can be connected to the thread beginning of the new coil. It is thus a fully automatic production of a pattern or short chain possible.
Die Aufgabe wird bei einem Verfahren der eingangs genannten Art dadurch gelöst, dass ein Sensor zum Messen des Befüllungsgrades der Spulen parallel zur Rotationsachse bewegt wird.The object is achieved in a method of the type mentioned in that a sensor for measuring the degree of filling of the coil is moved parallel to the axis of rotation.
Durch die Bewegung des Sensors ist es möglich, beispielsweise einen Durchmesser der Spulen an mehreren axial nebeneinander liegenden Punkten zu ermitteln. Der Durchmesser der Spulen ist ein Maß für den Befüllungsgrad bzw. für die Restfadenlänge. Durch die Bewegung des Sensors kann also eine sehr genaue Messung erfolgen. Dabei können auch nebeneinander liegende Spulengruppen erfasst werden, wodurch mit einem einzigen Sensor ausgekommen werden kann.By the movement of the sensor, it is possible to determine, for example, a diameter of the coils at a plurality of axially adjacent points. The diameter of the coils is a measure of the degree of filling or for the remaining thread length. By the movement of the sensor so a very accurate measurement can be done. In this case, adjacent coil groups can be detected, which can be done with a single sensor.
Vorteilhafterweise erfolgt eine Messung während der Bewegung des Sensors. Es können also relativ schnell aufeinander folgende Messungen durchgeführt werden. So ist es möglich, den Spulendurchmesser einer Spule an mehreren axial nebeneinander liegenden Messpunkten direkt hintereinander zu messen, ohne dass dafür mehrere Umdrehungen des Trägers erforderlich sind. So können während einer Umdrehung des Trägers alle Spulen einer Gruppe erfasst werden.Advantageously, a measurement takes place during the movement of the sensor. So it can be done relatively quickly consecutive measurements. It is thus possible to measure the coil diameter of a coil directly at a plurality of axially adjacent measuring points without the need for several revolutions of the carrier. Thus, during one rotation of the carrier all coils of a group can be detected.
Vorteilhafterweise wird die Musterkettenschärmaschine angehalten, wenn der Befüllungsgrad kleiner als ein Sollwert ist. Dadurch wird sichergestellt, dass kein wilder Fadenbruch erfolgt, sondern dass immer ein ausreichender Befüllungsgrad der Spulen vorhanden ist. Als Maß für den Befüllungsgrad dient beispielsweise die Restlänge des Fadens, der noch auf der Spule aufgewickelt ist. Diese Restlänge des Fadens kann anhand des Spulendurchmessers errechnet werden.Advantageously, the sample warping machine is stopped when the degree of filling is less than a desired value. This ensures that no wild thread break occurs, but that there is always a sufficient degree of filling of the coils. As a measure of the degree of filling serves, for example, the remaining length of the thread, which is still wound on the spool. This residual length of the thread can be calculated on the basis of the coil diameter.
Dabei ist besonders bevorzugt, dass der Sollwert in Abhängigkeit von einem zu erzeugenden Muster bestimmt wird. Der Sollwert kann also variieren. Damit ist es möglich, den auf der Spule befindlichen Fadenvorrat möglichst gut auszunutzen. Gleichzeitig können Knoten in der Musterlänge vermieden werden. Dementsprechend kann man auf einfache Weise eine knotenfreie oder knotenarme Musterkette erzeugen.It is particularly preferred that the desired value is determined as a function of a pattern to be generated. The setpoint can therefore vary. This makes it possible to make the best possible use of the thread supply located on the bobbin. At the same time, nodes in the pattern length can be avoided. Accordingly, one can easily create a knot-free or knot-poor pattern chain.
Vorteilhafterweise wird eine Restlänge des Fadens auf eine Mittelschnur aufgewickelt. Diese Mittelschnur, die auch "Seele" genannt wird, dient in der Regel zur Ablage der Fäden, wenn diese gerade nicht auf der Schärtrommel abgelegt werden. Indem nun auch die Restlängen auf der Mittelschnur aufgewickelt werden, wird dafür gesorgt, dass auch die Knoten, die zur Verbindung des einen Fadenendes mit dem Fadenende der neuen Spule erforderlich sind, auf die Mittelschnur aufgewickelt werden. Es wird dadurch sichergestellt, dass eine knotenfreie Musterkette erzeugt wird.Advantageously, a residual length of the thread is wound onto a central cord. This central cord, which is also called "soul", is usually used for filing the threads, if they are not stored on the warping drum. By now also the remaining lengths are wound on the center line, it is ensured that the nodes that are required to connect the one thread end to the thread end of the new coil, are wound on the center line. This ensures that a knot-free pattern chain is generated.
Die Erfindung wird im Folgenden anhand eines bevorzugten Ausführungsbeispiels in Verbindung mit der Zeichnung beschrieben. Hierin zeigen:
- Fig. 1
- eine schematische Seitenansicht einer Muster- kettenschärmaschine,
- Fig. 2
- eine Seitenansicht eines Drehgatters,
- Fig. 3
- eine Stirnansicht eines Drehgatters,
- Fig. 4
- eine Seitenansicht der Sensoranordnung und
- Fig. 5
- eine weitere Ansicht der Sensoranordnung.
- Fig. 1
- a schematic side view of a sample warper,
- Fig. 2
- a side view of a rotary gate,
- Fig. 3
- an end view of a rotary gate,
- Fig. 4
- a side view of the sensor assembly and
- Fig. 5
- another view of the sensor assembly.
In
Gegenüber einer Stirnseite der Schärtrommel 2 ist ein Drehgatter 5 angeordnet. Aus dem Drehgatter 5 werden Fäden 6 abgezogen, die mit Hilfe von Fadenführern 7 auf den Transportbändern 3 abgelegt werden können. Die Fadenführer 7 können dabei in Axialrichtung der Schärtrommel 2 über die Transportbänder 3 verschwenkt werden. In diesem Fall werden die Fäden 6 auf den Transportbändern 3 abgelegt. Die Fadenführer 7 können auch so verschwenkt werden, dass sie die Fäden 6 auf einer Mittelschnur 8 ablegen, die etwa in der Achse 4 der Schärtrommel 2 verläuft.Opposite a front side of the warping drum 2, a
Um die Fäden auf den Umfang der Schärtrommel 2 bzw. auf den Transportbändern ablegen zu können, müssen sich die Fäden 6 gemeinsam mit den Fadenführern 7 um die Schärtrommel 2 drehen. Um dies zu ermöglichen, weist das Drehgatter mindestens einen Träger 9, 10 auf, an dem mehrere Spulenaufnahmen 11 angeordnet sind. In jeder Spulenaufnahme 11 kann eine Spule 12, 13 angeordnet werden. Von jeder Spule 12, 13 wird dann ein Faden 6 abgezogen und einem entsprechenden Fadenführer 7 zugeleitet.In order to store the threads on the circumference of the warping drum 2 or on the conveyor belts, the threads 6 must rotate together with the yarn guides 7 to the warping drum 2. To make this possible, the rotary gate has at least one
In
In
Durch die Verwendung nur eines Sensors 19 ist es für die Erfassung der Spulendurchmesser aller Spulen 12 einer Spulengruppe erforderlich, dass eine vollständige Umdrehung des Trägers 9 erfolgt. Bei mehreren Spulengruppen, die axial hintereinander angeordnet sind, sind dementsprechend mehrere Umdrehungen erforderlich, da der Sensor 19 jeweils zur nächsten Spulengruppe verfahren werden muss. In der Regel ist es jedoch nicht erforderlich, die Information über den Befüllungsgrad jeder Spule permanent zur Verfügung zu haben. Vielmehr ist es ausreichend, jede Umdrehung oder jede zweite bzw. dritte Umdrehung den Befüllungsgrad zu erfassen, zumal in der Regel durch die Mustersteuerung bekannt ist, wie viel Faden verbraucht worden sein sollte. Ebenso ist durch die Mustersteuerung in der Regel die noch erforderliche Restlänge des Fadens bekannt, so dass gegebenenfalls ein vorgezogener Spulenwechsel erfolgen kann. Dadurch wird sichergestellt, dass eine knotenfreie Musterkette erzeugt wird.By using only one
In
Zwischen dem Sensor 19 und der Gleitschiene 20 ist noch ein Verbindungsstück 23 angeordnet, das fest mit dem Sensor 19 verbunden ist und beispielsweise als Ausgleichselement dient. Gleichzeitig kann das Verbindungsstück 23 dämpfende Eigenschaften aufweisen, um Vibrationen zu dämpfen und so die Genauigkeit der Messung zu erhöhen.Between the
In
Claims (15)
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT09010358T ATE534762T1 (en) | 2009-08-12 | 2009-08-12 | ROTARY GATE OF A PATTERN CHAIN WARMER, SAMPLE CHAIN WARMER AND METHOD FOR MEASURING A COIL DIAMETER |
EP09010358A EP2284303B1 (en) | 2009-08-12 | 2009-08-12 | Rotary creel of a sample warping machine, sample warping machine and method for measuring a bobbin diameter |
CN200910225860.4A CN101994187B (en) | 2009-08-12 | 2009-11-30 | Rotary creel of a sample warping machine, sample warping machine and method for measuring a bobbin diameter |
JP2009273397A JP5167231B2 (en) | 2009-08-12 | 2009-12-01 | Rotating creel of pattern warp partial warper, partial warp for pattern warp, and method for measuring bobbin diameter |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP09010358A EP2284303B1 (en) | 2009-08-12 | 2009-08-12 | Rotary creel of a sample warping machine, sample warping machine and method for measuring a bobbin diameter |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2284303A1 true EP2284303A1 (en) | 2011-02-16 |
EP2284303B1 EP2284303B1 (en) | 2011-11-23 |
Family
ID=41557678
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP09010358A Active EP2284303B1 (en) | 2009-08-12 | 2009-08-12 | Rotary creel of a sample warping machine, sample warping machine and method for measuring a bobbin diameter |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP2284303B1 (en) |
JP (1) | JP5167231B2 (en) |
CN (1) | CN101994187B (en) |
AT (1) | ATE534762T1 (en) |
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JP3958282B2 (en) * | 2003-09-26 | 2007-08-15 | 有限会社スズキワーパー | Multi-axis rotary creel, sample warper and warping method |
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JP4445437B2 (en) * | 2005-07-05 | 2010-04-07 | 村田機械株式会社 | Partial warping system and partial warping method |
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2009
- 2009-08-12 EP EP09010358A patent/EP2284303B1/en active Active
- 2009-08-12 AT AT09010358T patent/ATE534762T1/en active
- 2009-11-30 CN CN200910225860.4A patent/CN101994187B/en active Active
- 2009-12-01 JP JP2009273397A patent/JP5167231B2/en active Active
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US2643306A (en) * | 1950-02-28 | 1953-06-23 | Western Electric Co | Runout detector |
DE3527473A1 (en) * | 1985-07-31 | 1987-02-12 | Zinser Textilmaschinen Gmbh | Method and device for determining the filling level of feed bobbins on a spinning or twisting machine |
DE8713751U1 (en) * | 1986-10-13 | 1987-12-10 | Elitex koncern textilního strojírenství, Reichenberg/Liberec | Device for controlling the thread tension during warp warping |
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Also Published As
Publication number | Publication date |
---|---|
JP2011038233A (en) | 2011-02-24 |
EP2284303B1 (en) | 2011-11-23 |
ATE534762T1 (en) | 2011-12-15 |
CN101994187A (en) | 2011-03-30 |
CN101994187B (en) | 2014-10-29 |
JP5167231B2 (en) | 2013-03-21 |
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