EP2019165B1 - Device and method for correcting skew and curved distortion of a conveyed textile web - Google Patents
Device and method for correcting skew and curved distortion of a conveyed textile web Download PDFInfo
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- EP2019165B1 EP2019165B1 EP20080010852 EP08010852A EP2019165B1 EP 2019165 B1 EP2019165 B1 EP 2019165B1 EP 20080010852 EP20080010852 EP 20080010852 EP 08010852 A EP08010852 A EP 08010852A EP 2019165 B1 EP2019165 B1 EP 2019165B1
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- Prior art keywords
- straightening
- distortion
- module
- scanning
- infeed
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06H—MARKING, INSPECTING, SEAMING OR SEVERING TEXTILE MATERIALS
- D06H3/00—Inspecting textile materials
- D06H3/12—Detecting or automatically correcting errors in the position of weft threads in woven fabrics
Definitions
- the invention relates to a device for delay correction of a conveyed, in particular textile web according to the preamble of claim 1.
- Finishing work on textile materials involves straightening fabrics and knits.
- the weft threads or courses must be parallel and exactly at right angles to the longitudinal direction.
- Straightening is achieved by a moving system of straight and curved rollers. These can also be attached directly to the spout outlet.
- the warp is to be determined by means of suitable electronic scanning means. This measurement system designed in this way is followed by a mechanical system, namely the actual steep link with straightening roller, to which appropriate control commands are supplied.
- a mechanical shot judge should have the property that the path of the goods through the straightening machine is as short as possible.
- the scanning of the goods takes place in the known state of the art at the output of the leveler, wherein the tension of the goods within the leveler is adjustable.
- the regulation of the straightening machine must be adapted in precision and speed to the scanning process and the material properties of the goods.
- the local device comprises a combination of different straightening and deflection rollers and on the output side an arrangement of a measuring system, for example in the form of a camera.
- a correction is carried out first via a first pair of rollers and then a further correction by means of a second pair of rollers.
- the second pair of rollers is arranged downstream of the first pair of rollers in the direction of travel of the goods.
- a device for directing Schussverlitis or shot shifts in tissues known in which an inlet-side detection device for correcting the skewed distortion of the incoming web is in operative connection with a downstream Schräichtichtwalze.
- a further detection device is provided for the correction of Feinschrägverversn at the output of the device, which detects the present at the exit fine skew and starting therefrom an upstream Feinschrägrichtwalze activates.
- the Schräggrichtwalzen preferably more Bogenrichtwalzen are arranged.
- a disadvantage of the known straightening devices is the high number of guide rollers and the large amount of material to textile material which passes through the straightening machine until the control is active.
- a long cycle time and a large amount of material of the web leads to quality losses in terms of straightening, ie it takes a while until the textile web has a satisfactory straightening quality and freedom from distortion.
- the delay of the incoming, in particular textile, material web is determined both at the inlet of the leveler and at its outlet.
- a first straightening roller assembly is presented starting from the determined delay at the inlet, in the sense of a control.
- one or more further following straightening roller arrangements are likewise made via the determination of the distortion at the inlet in the sense of a control.
- Each of the straightening roller assemblies is movable via a separate drive.
- the scanning at the outlet has an outlet bridge with several, even in the direction of the goods width sliding scanning heads.
- the residual distortions determined there are directed to the straightening roller arrangement located in front of the outlet bridge for their regulation.
- the inlet-side rollers are placed through the inlet bridge and the local measuring system, and the outlet-side rollers are regulated by the outlet bridge and the measuring system there.
- the respective straightening roll arrangements comprise a combination of skew and bow straightening rolls, so that overall the number of rolls is reduced in comparison with conventional straightening machines and the product content in the straightening machine is reduced. This is especially true for elastic fabric, e.g. Knitted fabric, an advantage, since within the machine lower voltages related to the goods are built.
- the distortion correction device is much faster and more accurate in the straightening result compared to conventional straightening machines, which results from the combination of positions and rules.
- the inlet rollers By placing the inlet rollers, the rough straightening work is already completed in the inlet area, so that only residual distortions need to be corrected in the outlet roller area.
- the extremely fast correction of the delays also results from the combination of digits and rules, as the machine detects large distortion changes already in the inlet and thus immediately brings the infeed rollers to the necessary position, without the material of the Fabric web first, as in the prior art, to lead to the measuring system in the area of the outlet.
- the device according to the invention for distortion correction can be implemented as a kind of modular system in which the number of straightening roller arrangements can be extended in a modular manner in order to increase the straightening capacity. Furthermore, between the straightening roller arrangements, the number of guide rollers can be increased in order to increase the straightening path for stiffer materials, since otherwise such goods can not apply the straightening process necessary for the straightening process in excessively short distances.
- the components required for straightening the textile material web are primarily formed by a combination of arcuate and beveled roll in the respective straightening roller arrangement or in the respective straightening module. Between the straightening roller assemblies, a movement of the web can be performed without additional guide rollers, so that in a very simple basic design only two guide rollers in the inlet scanning head bridge and two further guide rollers in the area of the spout Abtastkopfmaschine are necessary.
- a spreader roll in an embodiment of the invention in the inlet or form a dancer roll group in the outlet.
- Fig. 1 is assumed by a leveler, which consists of individual modules, which are arranged within a stable frame.
- a first module is formed by an infeed delay scan 1, which is arranged in the area of the goods inlet of the straightening machine.
- the infeed delay scan I consists of a scanning head bridge which comprises a plurality of photoelectric and / or optoelectronic measuring heads spaced over the width of the web. To adapt to the width of the web, the measuring heads on the Abtastkopfmaschine are also automatically, longitudinally displaceable.
- Another module consists of a runout delay scan 2.
- the infeed delay scan 1 registers the existing actual distortion of the supplied textile material web (see Fig. 3 , G). From the determined delay data, a control signal for the straightening modules 3 and / or 4 is provided.
- the straightening result is increased overall, ie, the amount of a non-distortion-corrected web is reduced , From the default signal obtained by the in-run delay scan 1, also in connection with the type of materials supplied, For example, woven or knitted fabric, an adjustment parameter for the downstream leveling module 3 and / or 4 determined.
- the first straightening module 3 includes at least one roller 3a in connection with a roller suspension 3b and a frame assembly 3c.
- the frame assembly 3c is together with the roller in the plane of Fig. 1 pivotable.
- the roller 3a can also be laterally raised or lowered.
- the respective straightening module 3, 4 may be enclosed by a housing 3d or 4d.
- the second straightening module 4 is constructed analogously to the straightening module 3 and in turn has a straightening roller 4a, a roller suspension 4b and adjusting devices or means for supporting the straightening module 4c.
- the control of the third straightening module 5 is effected by an output signal of the run-out delay scan 2, which has measuring heads 2a in combination with an opposite light source.
- the structure of the run-out delay scan 2 is substantially analogous to that according to run-in delay scan 1, which also comprises the measuring heads 1a with transmitted-light illumination units.
- the active part of the respective measuring head can scan the front or the back of the web. Measurements are possible both in transmitted and reflected light.
- a control loop is formed, that is, a still existing residual distortion is determined, and on the provision of a controlled variable to the straightening module 5, this delay is compensated, and Although until reaching a predetermined setpoint, ie it is continuously performed a target-IstVerrupt within the controlled system.
- the first straightening module 3 eliminates nearly 50% of the existing strains. Another delay is then eliminated by the second straightening module 4 and the residual distortion then from the third straightening module 5. Overall, less material leaves the machine without direction.
- the straightening modules 3, 4 and 5 with their mechanical elements, such as frames and / or adjusting devices, are subjected to a special color coding or have a correspondingly different color coating, for example in the order first straightening module 3 black, second straightening module 4 red, third straightening module 5 yellow.
- the web G according to Fig. 1 arrives at the figuratively illustrated embodiment of the straightening machine via a spreader roller 7a and the guide rollers 7b and 7c in the scanning of the intake delay scan 1, comprising the measuring heads 1a, and the deflection roller 1b in the first straightening module 3.
- a mechanical support 6 is provided which receives deflection rollers 2b.
- a dancer roller assembly 8 comprising two dancer rollers 8a may optionally connect.
- the dancer roller assembly 8 succeeds in setting a constant tension in the web, which is then led out via a guide module 9, comprising the rollers 9a and 8b, from the straightening machine and then, for example, reaches a clamping frame for fixing the weft position.
- a first directional module 3 and / or 4 there is a first scanhead bridge for forming an infeed scan 1 and a second scanhead bridge for forming a runout delay scan 2.
- the number of guide rollers 22 has been reduced to a minimum.
- Fig. 3 shows a block diagram representation of the control of the directional modules 3, 4 and 5.
- the infeed warp 1 detects the draft of the incoming web G and provides a control value which is also dependent on the type of material, e.g. Woven or knitted fabric, can be specified as a presettable meter.
- This default value passes in the sense of a feedforward control on electronic control blocks 10 and 13, which cause a symbolically shown adjustment of the roller 11 via drive means 12.
- the symbolically indicated roller 15 of the second straightening module 4 is also supplied, optionally with a modified signal, to an electronic control block 17 and activates the mechanical adjusting means 16.
- the adjustment can be made electromechanically, but also hydraulically.
- the third straightening module 5 with the straightening roller 19 shown symbolically also has adjusting means 20 which can be activated via the assemblies 21.
- adjusting means 20 which can be activated via the assemblies 21.
- a control loop is present.
- the discontinuity-delay scanning 2 determined by means of measuring heads located on a Abtastkopfmaschine (not shown), the remaining residual distortion of the web G. Then the straightening roller 19 is driven and there is a Determine how far this control step has been successful in judging. If there is still a (lesser) delay, the regulation becomes active again.
- the control circuit based on the straightening module 5 is symbolized by the dashed arrow.
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- Textile Engineering (AREA)
- Treatment Of Fiber Materials (AREA)
Description
Die Erfindung betrifft eine Vorrichtung zur Verzugskorrektur einer geförderten, insbesondere textilen Warenbahn nach dem Oberbegriff des Anspruchs 1.The invention relates to a device for delay correction of a conveyed, in particular textile web according to the preamble of
Zur den Fertigstellungsarbeiten textiler Materialien gehört das Richten von Geweben und Maschenwaren. Hier müssen die Schussfäden oder Maschenreihen parallel und genau im rechten Winkel zur Längsrichtung liegen. Als Schussverzüge sind Diagonalverzug, Bogenverzug, aber auch Kombination beider derartiger Verzüge bekannt. Das Geraderichten erfolgt über ein bewegliches System von geraden und gebogenen Walzen. Diese können auch direkt am Auslauf von Spannrahmen angebracht werden. Zur Schussfadenrichtung ist zunächst der Verzug mit Hilfe geeigneter elektronischer Abtastmittel zu bestimmen. Diesem derart ausgestalteten Messsystem folgt eine mechanische Anlage, nämlich das eigentliche Steilglied mit Richtwalze, dem entsprechende Regelkommandos zugeführt werden.Finishing work on textile materials involves straightening fabrics and knits. Here, the weft threads or courses must be parallel and exactly at right angles to the longitudinal direction. As a shot distortions are diagonal delay, bow distortion, but also combination of both such delays known. Straightening is achieved by a moving system of straight and curved rollers. These can also be attached directly to the spout outlet. For the weft direction, first the warp is to be determined by means of suitable electronic scanning means. This measurement system designed in this way is followed by a mechanical system, namely the actual steep link with straightening roller, to which appropriate control commands are supplied.
Ein mechanischer Schussrichter sollte die Eigenschaft haben, dass der Weg der Ware durch die Richtmaschine möglichst kurz ist. Die Abtastung der Ware erfolgt beim bekannten Stand der Technik am Ausgang der Richtmaschine, wobei die Spannung der Ware innerhalb der Richtmaschine einstellbar ist. Die Regelung der Richtmaschine muss in Präzision und Geschwindigkeit dem Abtastvorgang und den Materialeigenschaften der Ware angepasst sein.A mechanical shot judge should have the property that the path of the goods through the straightening machine is as short as possible. The scanning of the goods takes place in the known state of the art at the output of the leveler, wherein the tension of the goods within the leveler is adjustable. The regulation of the straightening machine must be adapted in precision and speed to the scanning process and the material properties of the goods.
Zum Stand der Technik sei beispielsweise auf die
Die dortige Vorrichtung umfasst eine Kombination von verschiedenen Richt- und Umlenkwalzen sowie ausgangsseitig eine Anordnung eines Messsystems, z.B. in Form einer Kamera.The local device comprises a combination of different straightening and deflection rollers and on the output side an arrangement of a measuring system, for example in the form of a camera.
Gemäß der
Eine weitere bekannte Vorrichtung zum Richten von Schussfäden in textilen Materialien ist in der
Ferner ist aus der
Nachteilig bei den bekannten Richtvorrichtungen ist die hohe Anzahl von Umlenkwalzen und die große Materialmenge an textilem Material, welches die Richtmaschine durchläuft, bis die Regelung aktiv wird. Eine lange Durchlaufzeit und eine große Materialmenge der Warenbahn führt zu Qualitätsverlusten hinsichtlich des Richtvorgangs, d.h. es bedarf einer gewissen Zeit, bis die textile Warenbahn eine zufriedenstellende Richtqualität und Verzugsfreiheit aufweist.A disadvantage of the known straightening devices is the high number of guide rollers and the large amount of material to textile material which passes through the straightening machine until the control is active. A long cycle time and a large amount of material of the web leads to quality losses in terms of straightening, ie it takes a while until the textile web has a satisfactory straightening quality and freedom from distortion.
Aus dem Vorgenannten ist es daher Aufgabe der Erfindung, eine weiterentwickelte Vorrichtung zur Verzugskorrektur einer geförderten, insbesondere textilen Warenbahn anzugeben, welche für ganz unterschiedliche Ware, auch mit elastischen Eigenschaften, verwendbar ist und wobei es gilt, den Wareninhalt, der sich jeweils in der Vorrichtung befindet, zu minimieren. Weiterhin ist es Aufgabe der Erfindung, eine Vorrichtung zu schaffen, die im Vergleich zu herkömmlichen Richtmaschinen wesentlich schneller und präziser im Richtergebnis arbeitet.From the foregoing, it is therefore an object of the invention to provide an advanced device for delay correction of a subsidized, especially textile web, which is for very different goods, even with elastic properties, usable and where it applies, the goods content, each in the device is to minimize. Furthermore, it is an object of the invention to provide a device which operates much faster and more accurate in the directional result compared to conventional straightening machines.
Die Lösung der Aufgabe der Erfindung erfolgt mit der Merkmalskombination nach Patentanspruch 1, wobei die Unteransprüche mindestens zweckmäßige Ausgestaltungen und Weiterbildungen sowie ein Verfahren unter Rückgriff auf die Vorrichtung beinhalten.The object of the invention is achieved with the feature combination according to
Erfindungsgemäß wird der Verzug der einlaufenden insbesondere textilen Warenbahn sowohl am Einlauf der Richtmaschine als auch an deren Auslauf ermittelt. Eine erste Richtwalzenanordnung wird ausgehend von dem ermittelten Verzug am Einlauf vorgestellt, und zwar im Sinne einer Steuerung. Optional besteht die Möglichkeit, dass eine oder mehrere weitere folgende Richtwalzenanordnungen ebenfalls über die Verzugsermittlung am Einlauf im Sinne einer Steuerung gestellt werden. Jede der Richtwalzenanordnungen ist über einen separaten Antrieb bewegbar.According to the invention, the delay of the incoming, in particular textile, material web is determined both at the inlet of the leveler and at its outlet. A first straightening roller assembly is presented starting from the determined delay at the inlet, in the sense of a control. Optionally, there is the possibility that one or more further following straightening roller arrangements are likewise made via the determination of the distortion at the inlet in the sense of a control. Each of the straightening roller assemblies is movable via a separate drive.
Die Abtastung am Auslauf verfügt über eine Auslaufbrücke mit mehreren, auch in Richtung der Warenbreite verschiebbaren Abtastköpfen. Die dort ermittelten Restverzüge werden auf die vor der Auslaufbrücke befindliche Richtwalzenanordnung zu deren Regelung geleitet. Es werden demnach die einlaufseitigen Walzen durch die Einlaufbrücke und das dortige Messsystem gestellt und die auslaufseitigen Walzen durch die Auslaufbrücke und das dortige Messsystem geregelt. Die jeweiligen Richtwalzenanordnungen umfassen eine Kombination von Schräg- und Bogenrichtwalze, so dass insgesamt die Walzenzahl im Vergleich zu herkömmlichen Richtmaschinen reduziert ist und sich der Wareninhalt in der Richtmaschine verringert. Dies ist insbesondere bei elastischer Ware, z.B. Maschenware, von Vorteil, da innerhalb der Maschine geringere Spannungen bezogen auf die Ware aufgebaut werden.The scanning at the outlet has an outlet bridge with several, even in the direction of the goods width sliding scanning heads. The residual distortions determined there are directed to the straightening roller arrangement located in front of the outlet bridge for their regulation. Accordingly, the inlet-side rollers are placed through the inlet bridge and the local measuring system, and the outlet-side rollers are regulated by the outlet bridge and the measuring system there. The respective straightening roll arrangements comprise a combination of skew and bow straightening rolls, so that overall the number of rolls is reduced in comparison with conventional straightening machines and the product content in the straightening machine is reduced. This is especially true for elastic fabric, e.g. Knitted fabric, an advantage, since within the machine lower voltages related to the goods are built.
Die erfindungsgemäße Vorrichtung zur Verzugskorrektur ist im Vergleich zu herkömmlichen Richtmaschinen wesentlich schneller und präziser im Richtergebnis, was aus der Kombination von Stellen und Regeln resultiert. Durch das Stellen der Einlaufwalzen wird die grobe Richtarbeit bereits im Einlaufbereich vollzogen, so dass im Auslaufwalzenbereich nur noch Restverzüge zu korrigieren sind. Die extrem schnelle Korrektur der Verzüge resultiert ebenfalls aus der Kombination von Stellen und Regeln, da die Maschine große Verzugsänderungen bereits im Einlauf erkennt und damit sofort die Einlaufwalzen auf die notwendige Stellung bringt, ohne dass das Material der Warenbahn erst, wie beim bekannten Stand der Technik, zum Messsystem im Bereich des Auslaufs zu führen ist.The distortion correction device according to the invention is much faster and more accurate in the straightening result compared to conventional straightening machines, which results from the combination of positions and rules. By placing the inlet rollers, the rough straightening work is already completed in the inlet area, so that only residual distortions need to be corrected in the outlet roller area. The extremely fast correction of the delays also results from the combination of digits and rules, as the machine detects large distortion changes already in the inlet and thus immediately brings the infeed rollers to the necessary position, without the material of the Fabric web first, as in the prior art, to lead to the measuring system in the area of the outlet.
Die erfindungsgemäße Vorrichtung zur Verzugskorrektur ist quasi als Baukastensystem realisierbar, in dem die Anzahl der Richtwalzenanordnungen modulartig erweiterbar ist, um die Richtkapazität zu erhöhen. Weiterhin kann zwischen den Richtwalzenanordnungen die Anzahl von Umlenkwalzen erhöht werden, um den Richtweg für steifere Materialien zu erhöhen, da ansonsten derartige Waren auf zu kurzen Wegen den für den Richtvorgang notwendigen Dehnungsprozess nicht aufbringen bzw. vollziehen können.The device according to the invention for distortion correction can be implemented as a kind of modular system in which the number of straightening roller arrangements can be extended in a modular manner in order to increase the straightening capacity. Furthermore, between the straightening roller arrangements, the number of guide rollers can be increased in order to increase the straightening path for stiffer materials, since otherwise such goods can not apply the straightening process necessary for the straightening process in excessively short distances.
Gemäß einer bevorzugten Ausführungsform der Erfindung werden die für das Richten der textilen Warenbahn erforderlichen Komponenten primär durch je eine Kombination von Bogen- und Schrägrichtwalze in der jeweiligen Richtwalzenanordnung oder im jeweiligen Richtmodul gebildet. Zwischen den Richtwalzenanordnungen kann eine Bewegung der Warenbahn ohne zusätzliche Umlenkwalzen geführt werden, so dass bei einer sehr einfachen Grundkonstruktion lediglich zwei Umlenkwalzen im Bereich der Einlauf-Abtastkopfbrücke und zwei weitere Umlenkwalzen im Bereich der Auslauf-Abtastkopfbrücke notwendig werden.According to a preferred embodiment of the invention, the components required for straightening the textile material web are primarily formed by a combination of arcuate and beveled roll in the respective straightening roller arrangement or in the respective straightening module. Between the straightening roller assemblies, a movement of the web can be performed without additional guide rollers, so that in a very simple basic design only two guide rollers in the inlet scanning head bridge and two further guide rollers in the area of the spout Abtastkopfbrücke are necessary.
Selbstverständlich besteht die Möglichkeit, bei einer Ausgestaltung der Erfindung im Einlauf eine Breitstreckwalze anzuordnen oder im Auslauf eine Tänzerwalzengruppe auszubilden.Of course, it is possible to arrange a spreader roll in an embodiment of the invention in the inlet or form a dancer roll group in the outlet.
Die Erfindung soll nachstehend anhand eines Ausführungsbeispiels sowie unter Zuhilfenahme von Figuren näher erläutert werden.The invention will be explained below with reference to an embodiment and with the aid of figures.
Hierbei zeigen:
- Fig. 1
- eine Schnittdarstellung durch die Grundkonstruktion einer Richtmaschine in einer ersten Ausführungsform;
- Fig. 2
- eine Schnittdarstellung einer Richtmaschine in deren Grundkonstruktion einer zweiten Ausführungsform und
- Fig. 3
- ein Schema der Steuerung bzw. Regelung der jeweiligen Richtwalzenanordnungen.
- Fig. 1
- a sectional view through the basic construction of a leveler in a first embodiment;
- Fig. 2
- a sectional view of a straightening machine in its basic construction of a second embodiment and
- Fig. 3
- a scheme of the control of the respective straightening roller assemblies.
Gemäß der Darstellung nach
Ein erstes Modul wird durch eine Einlauf-Verzugsabtastung 1 gebildet, die im Bereich des Wareneinlaufs der Richtmaschine angeordnet ist.A first module is formed by an infeed
Die Einlauf-Verzugsabtastung I besteht aus einer Abtastkopfbrücke, die mehrere, über die Breite der Warenbahn beabstandet angeordnete photoelektrische und/oder optoelektronische Messköpfe umfasst. Zur Anpassung an die Breite der Warenbahn sind die Messköpfe auf der Abtastkopfbrücke auch automatisch, längsverschieblich angeordnet.The infeed delay scan I consists of a scanning head bridge which comprises a plurality of photoelectric and / or optoelectronic measuring heads spaced over the width of the web. To adapt to the width of the web, the measuring heads on the Abtastkopfbrücke are also automatically, longitudinally displaceable.
Ein weiteres Modul besteht aus einer Auslauf-Verzugsabtastung 2.Another module consists of a
Auch bei diesem Modul befinden sich mehrere Messköpfe auf einer Abtastkopfbrücke, die wiederum mechanisch mit dem Rahmen der Richtmaschine in Verbindung steht.Also in this module, several measuring heads are on a Abtastkopfbrücke, which in turn is mechanically connected to the frame of the leveler in combination.
Die Einlauf-Verzugsabtastung 1 registriert den vorhandenen Ist-Verzug der zugeführten textilen Warenbahn (siehe
Durch die Bestimmung des Verzugs bereits am Einlauf der Richtmaschine und das Ableiten eines Steuersignals für mindestens das erste Richtmodul 3 und den kurzen Abstand zwischen der Einlauf-Verzugsabtastung 1 und dem Richtmodul 3 wird das Richtergebnis insgesamt erhöht, d.h. die Menge einer nicht verzugskorrigierten Warenbahn ist verringert. Aus dem Verzugssignal, gewonnen durch die Einlauf-Verzugsabtastung 1, wird auch in Verbindung mit der Art der zugeführten Materialien, z.B. Web- oder Maschenware, ein Stellparameter für das nachgeordnete Richtmodul 3 und/oder 4 ermittelt.By determining the delay already at the inlet of the straightening machine and deriving a control signal for at least the
Das erste Richtmodul 3 enthält mindestens eine Walze 3a in Verbindung mit einer Walzenaufhängung 3b und einer Rahmenanordnung 3c. Die Rahmenanordnung 3c ist mitsamt der Walze in der Ebene der
Das zweite Richtmodul 4 ist analog dem Richtmodul 3 aufgebaut und weist wiederum eine Richtwalze 4a, eine Walzenaufhängung 4b und Stelleinrichtungen bzw. Mittel zum Lagern des Richtmoduls 4c auf.The
Nachdem die Warenbahn das zweite Richtmodul 4 verlässt, gelangt selbige auf ein drittes Richtmodul 5 mit den Elementen 5a, 5b und 5c. Die Ansteuerung des dritten Richtmoduls 5 erfolgt von einem Ausgangssignal der Auslauf-Verzugsabtastung 2, welche Messköpfe 2a in Kombination mit einer gegenüberliegenden Lichtquelle besitzt. Insofern ist der Aufbau der Auslauf-Verzugsabtastung 2 im Wesentlichen analog derjenigen gemäß Einlauf-Verzugsabtastung 1, die ebenfalls die Messköpfe la mit Durchlicht-Beleuchtungseinheiten umfasst. Je nach Zuführung der Warenbahn und der Art des textilen Materials kann der aktive Teil des jeweiligen Messkopfes die Vorderoder die Rückseite der Warenbahn abtasten. Messungen sind sowohl im Durchlicht als auch im Auflicht möglich.After the web leaves the
Die Förderung der Warenbahn zwischen den Richtmodulen 3, 4 und 5 erfolgt gemäß den Darstellungen nach
Zwischen der Auslauf-Verzugsabtastung 2 und dem dritten Richtmodul 5 wird ein Regelkreis gebildet, d.h. ein noch vorhandener Restverzug wird bestimmt, und über die Bereitstellung einer Regelgröße an das Richtmodul 5 wird dieser Verzug ausgeregelt, und zwar bis zum Erreichen eines vorgegebenen Sollwerts, d.h. es wird laufend ein Soll-IstVergleich innerhalb der Regelstrecke durchgeführt.Between the run-
Betrachtet man die gezeigten Ausführungsbeispiele nach
Bei einer Minimalkonfiguration sind nur zwei Richtmodule vorhanden, wobei ein erstes, einlaufseitig orientiertes Richtmodul über eine offene Steuerkette unter Berücksichtigung der Einlauf-Verzugsabtastung betrieben wird und das zweite, ausgangsseitig angeordnete Richtmodul über einen geschlossenen Regelkreis zu betreiben ist.In a minimum configuration, there are only two directional modules, with a first, inflow-side orienting module being operated via an open timing chain, taking into account the infeed delay scan, and the second, output-side, aligning module being operated via a closed loop.
Zur leichteren Zuordnung auch zum Zweck der Durchführung von Kontroll- und Servicearbeiten sind die Richtmodule 3, 4 und 5 mit ihren mechanischen Elementen, wie Rahmen und/oder Stelleinrichtungen, einer besonderen farblichen Kennzeichnung unterworfen bzw. besitzen einen entsprechend unterschiedlichen Farbanstrich, beispielsweise in der Reihenfolge erstes Richtmodul 3 schwarz, zweites Richtmodul 4 rot, drittes Richtmodul 5 gelb.For easier assignment, also for the purpose of carrying out inspection and service work, the straightening
Die Warenbahn G gemäß
Auch bei der
Mit den Pfeildarstellungen gemäß
Hier stellt die Einlauf-Verzugsabtastung 1 den Verzug der einlaufenden Warenbahn G fest und liefert einen Steuerwert, der auch von der Materialart, z.B. Web- oder Maschenware, als voreinstellbarer Meter vorgebbar ist. Dieser Vorgabewert gelangt im Sinne einer feedforward-Steuerung auf elektronische Steuerblöcke 10 und 13, die eine symbolisch dargestellte Verstellung der Walze 11 über Antriebsmittel 12 bewirken. Die symbolisch angedeutete Walze 15 des zweiten Richtmoduls 4 wird ebenfalls, gegebenenfalls mit einem abgewandelten Signal, einem elektronischen Steuerblock 17 zugeführt und aktiviert die mechanischen Verstellmittel 16. Die Verstellung kann elektromechanisch, aber auch hydraulisch vorgenommen werden.Here, the
Das dritte Richtmodul 5 mit der symbolisch dargestellten Richtwalze 19 weist ebenfalls Verstellmittel 20 auf, die über die Baugruppen 21 aktivierbar sind. Im Gegensatz zur Arbeitsweise der Richtmodule 3 und 4 liegt bezogen auf diejenigen des Richtmoduls 5 ein Regelkreis vor.The
Hierfür bestimmt die Auslauf-Verzugsabtastung 2 mit Hilfe der auf einer Abtastkopfbrücke befindlichen Messköpfe (nicht gezeigt) den noch vorhandenen Restverzug der Warenbahn G. Daraufhin wird die Richtwalze 19 angesteuert und es erfolgt eine Bestimmung, wieweit dieser Regelschritt bezüglich des Richtens erfolgreich war. Besteht weiterhin ein (geringerer) Verzug, wird die Regelung erneut aktiv.For this purpose, the discontinuity-
Der Regelkreis bezogen auf das Richtmodul 5 ist mit der gestrichelten Pfeildarstellung symbolisiert.The control circuit based on the
Mit dem dargestellten Aufbau gemäß den Ausführungsbeispielen einer Richtmaschine lassen sich sehr schnelle und präzisere Richtergebnisse erzielen. Durch das Ansteuern des ersten und zweiten Richtmoduls wird ein grobes Richten bereits im Warenbahneinlauf ausgeführt, während das auslaufseitig gelegene Richtmodul nur noch kleinere Restverzüge dynamisch korrigiert.With the illustrated construction according to the embodiments of a straightening machine can be achieved very fast and more accurate straightening results. By controlling the first and second straightening module, a rough straightening is already carried out in the web feed, while the outfeed straightening module dynamically corrects only minor residual distortions.
Claims (8)
- Device for correcting the skew and distortion of a conveyed textile web (G) wherein at least one first straightening module (3) is provided on the infeed side and one second straightening module (5) is provided on the run-out side and these each have at least one straightening roller (3a, 5a) in conjunction with a roller suspension (3b, 5b) and a frame assembly (3c, 5c) for correcting the inclined and curved distortion wherein the frame assembly (3c, 5c) is designed to swivel together with the straightening roller (3a, 5a),
wherein means are provided for deriving a signal for operating drive and adjusting units (12, 20) of the relevant straightening roller (11, 19),
wherein infeed distortion scanning (2) is provided which determines the residual distortion of the textile web (G) as or after it leaves the straightening module (3) on the run-out side,
wherein the infeed and run-out distortion scanning (1, 2) is produced each time by a scanning head bridge made up of several scanning heads (1a, 2a) and wherein a control unit is linked to the infeed distortion scanning (1) and to the first straightening module (3) on the infeed side and furthermore a control circuit is formed between the straightening module (5) on the run-out side and the run-out distortion scanning (2). - Device according to claim 1 characterised in that each of the straightening rollers (11, 19) used can be controlled individually and each has corresponding adjusting elements (12, 20).
- Device according to claim 1 or 2 characterised in that at least one further straightening module (4) is provided which is located between the straightening module (3) on the infeed side and the straightening module (5) on the run-out side.
- Device according to claim 3 characterised in that the further straightening module (4) is connected to the control unit.
- Device according to one of the preceding claims characterised in that the scanning heads (1a, 2a) of the distortion scanner comprise a photoelectric scanning unit with oscillating or rotating cylinder lens and an optoelectronic camera scanning unit.
- Device according to one of the preceding claims characterised by a modular-type construction for expanding the number of straightening rollers (11, 19) and thus of the straightening modules (3, 4, 5).
- Device according to one of the preceding claims characterised in that guide rollers for increasing the straightening path for stiffer textile webs are mounted between the straightening modules (3, 4, 5).
- Method for carrying out the distortion correction with a device according to at least one of the preceding claims characterised in that by way of scanning at the infeed side of the textile web (G) infeed distortion is determined from which a control parameter is derived for controlling the first straightening module (1) on the infeed side whereby furthermore the residual distortion at the run-out side is determined in order to operate the second straightening module (2) at the run-out side by forming a control circuit.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200710035285 DE102007035285B4 (en) | 2007-07-27 | 2007-07-27 | Device for delay correction of a conveyed, in particular textile web |
Publications (3)
Publication Number | Publication Date |
---|---|
EP2019165A2 EP2019165A2 (en) | 2009-01-28 |
EP2019165A3 EP2019165A3 (en) | 2009-03-18 |
EP2019165B1 true EP2019165B1 (en) | 2011-08-10 |
Family
ID=39855206
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20080010852 Expired - Fee Related EP2019165B1 (en) | 2007-07-27 | 2008-06-14 | Device and method for correcting skew and curved distortion of a conveyed textile web |
Country Status (2)
Country | Link |
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EP (1) | EP2019165B1 (en) |
DE (1) | DE102007035285B4 (en) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101818449B (en) * | 2010-03-26 | 2011-10-19 | 顾金华 | Machine vision based fabric pattern adjustment method and device thereof |
DE102011113665B4 (en) * | 2011-09-20 | 2016-01-07 | Mahlo Gmbh & Co. Kg | Needle straightening arrangement for distortion correction of a conveyed web and an associated method |
CN103572481B (en) * | 2013-11-25 | 2015-08-12 | 南通泰慕士服装有限公司 | Improve the method for knit single-jersey skew of weft |
CN105332255B (en) * | 2015-11-30 | 2017-10-20 | 蚌埠市禹会区贵宾装饰材料商行 | A kind of automatic weft straightener |
CN108103756A (en) * | 2018-01-26 | 2018-06-01 | 海宁鼎达纺织有限公司 | A kind of former cloth passer |
CN111826925A (en) * | 2020-08-24 | 2020-10-27 | 常州宏大智能装备产业发展研究院有限公司 | Fabric weft straightening or weft straightening and pattern straightening mechanism and method |
Family Cites Families (14)
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DE1118140B (en) * | 1958-04-26 | 1961-11-30 | Mahlo Heinz Dr Ing | Device for determining the weft thread position in running fabric webs and for controlling the weft thread straightening apparatus |
CH473934A (en) * | 1967-06-12 | 1969-06-15 | Eicken Henri | Device for straightening weft warps or weft displacements in fabrics |
DE1906801A1 (en) * | 1969-02-11 | 1970-09-10 | Mahlo Gmbh | Device for aligning running, warped textile webs |
JPS49133692A (en) * | 1972-11-10 | 1974-12-23 | ||
DE2850804C2 (en) * | 1978-11-23 | 1983-08-04 | Mahlo GmbH & Co KG, 8424 Saal | Method and device for measuring the weft thread position of a moving textile material web |
JPH01192865A (en) * | 1988-01-21 | 1989-08-02 | Santou Eng Kk | Method for straightening weft |
CS8905151A3 (en) | 1989-09-07 | 1992-01-15 | Elitex Zavody Textilniho | Device for straightening weft threads in textile bands |
EP0816554B1 (en) * | 1996-06-26 | 2003-04-02 | Mahlo GmbH & Co. KG | Draft correcting method |
DE19640023B4 (en) * | 1996-06-26 | 2006-06-29 | Mahlo Gmbh & Co Kg | Fast, cost=effective adjustment of travelling patterned textile web - has row of optical units sensing pattern to yield signals fed to video processor for output signals used for distortion correction |
JP3738375B2 (en) * | 1997-02-24 | 2006-01-25 | セーレン電子株式会社 | Cloth straightening device |
DE10218334A1 (en) * | 2002-04-24 | 2003-11-06 | Mahlo Gmbh & Co Kg | Process and assembly to correct distortions to mesh web by local acceleration or deceleration movements of a correction drum |
ITTO20030454A1 (en) | 2003-06-17 | 2004-12-18 | Bianco Spa | METHOD AND MACHINE TO CHANGE THE PERFORMANCE IN A FABRIC |
DE102004026978A1 (en) * | 2003-07-29 | 2005-05-19 | Mahlo Gmbh & Co. Kg | Process for evaluating and subsequently processing textile material strips comprises obtaining optical contact snapshots over the width of the moving textile material strips |
DE102006003384A1 (en) * | 2006-01-24 | 2007-07-26 | Brückner Trockentechnik GmbH & Co. KG | Straightening machine for continuous textile fabrics includes skew rollers followed by several longitudinal friction belts placed side by side and driven separately at sensor-controlled speeds |
-
2007
- 2007-07-27 DE DE200710035285 patent/DE102007035285B4/en not_active Expired - Fee Related
-
2008
- 2008-06-14 EP EP20080010852 patent/EP2019165B1/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
DE102007035285A1 (en) | 2009-01-29 |
EP2019165A2 (en) | 2009-01-28 |
DE102007035285B4 (en) | 2014-11-20 |
EP2019165A3 (en) | 2009-03-18 |
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