EP2573254B1 - Needle draft correcting device for correcting the draft of a textile sheet and associated method - Google Patents
Needle draft correcting device for correcting the draft of a textile sheet and associated method Download PDFInfo
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- EP2573254B1 EP2573254B1 EP20120182724 EP12182724A EP2573254B1 EP 2573254 B1 EP2573254 B1 EP 2573254B1 EP 20120182724 EP20120182724 EP 20120182724 EP 12182724 A EP12182724 A EP 12182724A EP 2573254 B1 EP2573254 B1 EP 2573254B1
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- Prior art keywords
- needle
- straightening
- point
- web
- wheels
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- 239000004753 textile Substances 0.000 title claims description 19
- 238000000034 method Methods 0.000 title claims description 11
- 239000000463 material Substances 0.000 claims description 24
- 230000007480 spreading Effects 0.000 claims description 20
- 239000004744 fabric Substances 0.000 description 6
- 230000002093 peripheral effect Effects 0.000 description 5
- 230000007423 decrease Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 2
- 238000009941 weaving Methods 0.000 description 2
- 238000002679 ablation Methods 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
Images
Classifications
-
- 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 Nadelrichtan Aunt for distortion correction of a conveyed web according to the preamble of claim 1 and an associated method according to the preamble of claim 8.
- a textile material web consists in particular of threads crossed at right angles, which are produced during the weaving process in the loom or in the weaving machine.
- warp longitudinal threads
- weft transverse threads
- skew direction of goods warp
- bow distortion arcuate to the direction of goods running distortion
- the textile web is guided over mechanical straightening arrangements, in which the existing distortions are compensated for by means of corresponding application of compensating forces on the moving textile material web by means of roll units arranged obliquely or arcuately to the running direction of the textile web.
- roll units arranged obliquely or arcuately to the running direction of the textile web.
- needle straightening arrangements are known in which the moving textile web is tensioned at the opposite web edges over at least two oppositely arranged needle straightening wheels transversely to the running direction of the textile web.
- the directional wheels By pivoting the directional wheels about a pivot axis in one given angle to the direction of the textile web and with a predetermined lateral force each side acting outward transverse stress is introduced into the textile web and thereby causes a spreading of the web.
- the web edges of the warped textile web are thus subjected to a defined straightening force to the outside, ie in the direction of the weft of the textile web.
- the result is a component of force that seeks to re-shape the parallelogram structure into the original orthogonal structure.
- the width of the web when needling special importance, which usually falls below the width of the web in the unloaded state due to the machine promotion of the web.
- the needling of the web takes place regardless of their web properties always the same, so that some high residual distortions are introduced into the web, which lead to increased mechanical complexity in the post-correction.
- a Nadelrichtan extract according to the preamble of claim 1 is made JP 2001200468 known.
- the present invention seeks to provide a Nadelrichtan instructs to provide a Nadelrichtan instructs to provide a Nadelrichtan instructs to provide a Nadelrichtan instructs to provide a Nadelrichtan instructs to provide a Nadelrichtan instructs to provide a Nadelrichtan instructs to provide a Nadelrichtan instructs to provide a Nadelrichtan instructs to provide a Nadelrichtan instructing the Abnadelstelle a Nadelrichtan inch, which has an improved directivity compared to known Nadelrichtan empen.
- the object is achieved on the basis of a Nadelrichtan instructs to provide a Nadelrichtan instructs to provide a Nadelrichtan instructs to provide.
- the essential aspect of the device according to the invention is to be seen in that the needle roller is pivotally formed about a pivot axis.
- Abnadelstelle adjustable by pivoting the Abnadelwalze to the first and second pivot point of the needle-directional receiving pivot axis.
- the needle straightening wheels are designed to produce a spreading profile with a first and second spreading profile area, the first and second spreading profile area being approximately symmetrical to one another.
- the Abnadelstelle is adjustable in the second Sp Dahlungsprofil Symposium.
- the maximum spread value of the spreading profile of the straightening wheels is present at that end-side circumferential point of the straightening wheels, at which the distance of the pivot axis opposite the front circumferential point to the respective pivot axis is maximum.
- the spread value decreases from the maximum spread value toward the point of needling.
- the subject matter of the present invention is also a method for adjusting the Abnadelstelle a at least two needle directions having needle straightening arrangement for distortion correction of a subsidized, especially textile web, in which the conveyed web is applied with the opposite edges of the fabric at a Aufnadelstelle on the Nadelrichtiza and at a Abnadelstelle of the Needle direction wheels is removed again.
- the Abnadelstelle means a pivotable Abnadelwalze trajectory adjusted.
- the Abnadelwalze is preferably pivoted along the circumference of Nadelrichtrastn, the Abnadelstelle is adjusted depending on the material properties of the web, in particular their elasticity and / or the strength of the warpage of the web and / or the width of the web at the Aufnadelstelle.
- FIG. 1 is shown in a perspective view of a needle straightening arrangement 1 according to the invention in a simplified representation, which have at least a first Nadelrichtrad 2 and a second Nadelrichtrad 3.
- the Nadelrichtrast 2, 3 each have from the front side in the radial direction outwardly projecting needles, which distributes almost uniformly along the frontal periphery of the needle direction wheels 2 are.
- Such a needle straightening arrangement 1 can either be part of a textile processing machine or a straightening machine 4.
- FIG. 2 For example, a schematic cross-section through a straightening machine 4 is shown, which has a needle straightening arrangement 1 according to the invention.
- the web W is hereby conveyed in a web direction WL through the Nadelrichtan Aunt 1 and thereby subjected to a straightening process.
- the straightening machine 4 comprises, for example, a schematic in FIG FIG. 2 indicated machine frame 5, in which the Nadelrichtan Aunt invention 1 and further roller assemblies are added.
- the machine frame 5 forms a rigid, rectangular frame, through which the web W can be conveyed through and thereby can be subjected to several processing steps.
- the basic technical structure of such straightening machines 4 and in particular of the machine frame 5 provided for this purpose is sufficiently known from the prior art and can have very different forms of implementation.
- the first needle straightening wheel 2 is rotatable about a first pivot point DP1 and pivotable about a first pivot axis SA1 and the second needle straightening wheel 3 rotatable about a second pivot point DP2 and pivotable about a second pivot axis SA2 formed.
- FIG. 1 shows the Nadelrichtrast 2, 3 in the directional position, ie, the first and second Nadelrichtrad 2, 3 include approximately an acute angle with the fabric direction WL.
- SA1 For pivoting the first and second Nadelrichtrades 2, 3 about the respective pivot axis SA1, SA2 an unspecified adjusting mechanism 6 is provided, via which both the adjustment of the Nadelrichtcken 2, 3 and an adjustment of the distance of the Nadelrichtrate 2, 3 to each present width B of the web W can be adjusted.
- the web W is fed via an inlet roller 7 a roller mill 8, which, for example, an S-wrap can have.
- a spreader roll arrangement 9 for wrinkle-free feeding of the material web W to the straightening arrangement 1 or its directional wheels 2, 3.
- the material web W is fed to a sheet straightening roller arrangement 10 arranged on the output side, by means of which minimal sheet rest distortions still contained in the material web W can be corrected before the material web W leaves the straightening machine 4.
- FIG. 3 to illustrate the operation of the needle straightening arrangement 1 and the straightening wheels 2, 3 is a schematic view of the spread profile SP generated by the Nadelrichtrast 2, 3 shown on the Nadelricht grantn 2,3 needled web W along the fabric direction WL.
- the width B of the web W is selectively increased by the engaging in the opposite web edges W ', W "needles of Nadelrichtrate 2, 3 when passing through a predetermined peripheral region of the straightening wheels 2, 3, ie the web W spread, and then reduced again.
- the spread profile SP thus has a first and second spread profile area SP1, SP2, which run symmetrically to each other.
- the first spread profile area SP1 the spread value S of the material web W increases continuously along the frontal circumference of the directional wheels 2, 3, starting from a minimum spread value S MIN at the point of application N AUF up to a maximum spread value S MAX .
- I'm at it Subsequent second spread profile range SP2 takes the spread value S of the web W along the frontal circumference of the directional wheels 2, 3 from the maximum spread value S MAX up to the minimum spread value S MIN decreases again.
- the maximum spread value S MAX of the directional wheels 2, 3 is in this case at that front circumferential point of the directional wheels 2, 3, at which the distance from the frontal peripheral point to the respective pivot axis SA1, SA2 is maximum, ie the intersection between a two pivot points SP1, SP2 receiving and perpendicular to the pivot axes SA1, SA2 extending plane E and the respective pivot axis SA1, SA2 opposite end face of the directional wheels 2, 3.
- the needle roller 11 is pivotally formed about the first and second pivot point DP1, DP2 of the needle straightening wheels 2, 3 receiving pivot axis SA, in such a way that by pivoting the needle roller 11 about the pivot axis SA the Abnadelstelle N AB along the frontal circumference of the straightening wheels 2, 3 is adjustable.
- the setting of the Abbestadelstelle N AB can be carried out either manually or mechanically by means of a control loop.
- the Abnadelstelle N AB can be adjusted according to the invention in the frontal peripheral region of the Nadelrichtrast 2, 3, preferably in the second Sp Dahlungsprofil Suite SP2 according to the in FIG. 3 shown spreading profile SP, the extends from the front-side circumferential point with the maximum spread value S MAX to the frontal peripheral point with the minimum spread value S MIN .
- the minimum spread value S MIN is approximately at the end face circumferential location opposite the pin point N AUF , at which the respective pivot axis SA 1, SA 2 of the needle straightening wheels 2, 3 intersects the front peripheral area of the needle straightening wheels 2, 3.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Textile Engineering (AREA)
- Treatment Of Fiber Materials (AREA)
Description
Die Erfindung betrifft eine Nadelrichtanordnung zur Verzugskorrektur einer geförderten Warenbahn gemäß dem Oberbegriff des Patentanspruches 1 sowie ein zugehöriges Verfahren gemäß dem Oberbegriff des Patentanspruches 8.The invention relates to a Nadelrichtanordnung for distortion correction of a conveyed web according to the preamble of claim 1 and an associated method according to the preamble of
Während des maschinellen Herstellungs- und Verarbeitungsprozesses von geförderten Warenbahnen tritt häufig ein Warenverzug auf. Derartige Verzüge der Warenbahn verändern die Struktur der aus diesen hergestellten Waren wie beispielsweise Textilien oder gewebte Teppiche, wodurch wiederum der Gebrauchswert der Waren gemindert wird und/oder die Weiterverarbeitung der Waren beeinträchtigt wird.During the mechanical manufacturing and processing process of conveyed webs occurs often a delay in goods. Such delays of the web change the structure of the goods produced therefrom such as textiles or woven carpets, which in turn reduces the utility of the goods and / or the further processing of the goods is impaired.
Eine textile Warenbahn besteht insbesondere aus rechtwinklig überkreuzten Fäden, die während des Webvorgangs im Webstuhl bzw. in der Webmaschine erzeugt werden. Hierbei wird zwischen den Längsfäden ("Kette") und den Querfäden ("Schuss") unterschieden. Aufgrund des überlicherweise schräg zur Warenlaufrichtung verlaufenden Verzugs ("Schrägverzug") oder bogenförmig zur Warenlaufrichtung verlaufenden Verzugs ("Bogenverzug") der textilen Warenbahn wird die orthogonale Textilstruktur von Kette und Schuss verformt. Der ursprünglich orthogonale Aufbau von Kette und Schuss oder deren Maschenreihen werden somit schräg oder bogenförmig verändert, d.h. ein Schräg- und/oder Bogenverzug liegt vor.A textile material web consists in particular of threads crossed at right angles, which are produced during the weaving process in the loom or in the weaving machine. Here, a distinction is made between the longitudinal threads ("warp") and the transverse threads ("weft"). Due to the usually obliquely running to the direction of goods warp ("skew") or arcuate to the direction of goods running distortion ("bow distortion") of the textile web, the orthogonal textile structure of warp and weft is deformed. The original orthogonal structure of warp and weft or their courses are thus changed obliquely or arcuately, i. a skew and / or bow distortion exists.
Zur Wiederherstellung der ursprünglich orthogonalen Struktur wird die Textilbahn über maschinelle Richtanordnungen geführt, bei der mittels schräg oder bogenförmig zur Laufrichtung der Textilbahn angeordneten Walzeneinheiten die bestehenden Verzüge durch entsprechendes Aufbringen von Ausgleichskräften auf die bewegte textile Warenbahn ausglichen werden. Derartige walzenbasierte Richtanordnungen werden bevorzugt zur Beseitigung von bogenförmigen Faden- und Maschenverzug eingesetzt.To restore the original orthogonal structure, the textile web is guided over mechanical straightening arrangements, in which the existing distortions are compensated for by means of corresponding application of compensating forces on the moving textile material web by means of roll units arranged obliquely or arcuately to the running direction of the textile web. Such roll-based directing arrangements are preferably used to eliminate arcuate thread and stitch distortion.
Alternativ sind so genannte Nadelrichtanordnungen bekannt, bei denen die bewegte textile Warenbahn an den gegenüberliegenden Warenbahnkanten über zumindest zwei gegenüber angeordnete Nadelrichträder quer zur Laufrichtung der textilen Warenbahn gespannt wird. Durch Schwenken der Richträder um eine Schwenkachse in einen vorgegebenen Winkel zur Laufrichtung der textilen Warenbahn und mit einer vorgegebenen Querkraft wird jeweils eine seitlich nach außen wirkende Querspannung in die textile Warenbahn eingeleitet und dadurch eine Spreizung der Warenbahn bewirkt. Die Warenbahnkanten der verzogenen textilen Warenbahn werden somit mit einer definierten Richtkraft nach außen, d.h. in Richtung des Schusses der Textilbahn beaufschlagt. So entsteht eine Kräftekomponente, die bestrebt ist, die Parallelogrammstruktur in die ursprünglich orthogonale Struktur zurückzuformen.Alternatively, so-called needle straightening arrangements are known in which the moving textile web is tensioned at the opposite web edges over at least two oppositely arranged needle straightening wheels transversely to the running direction of the textile web. By pivoting the directional wheels about a pivot axis in one given angle to the direction of the textile web and with a predetermined lateral force each side acting outward transverse stress is introduced into the textile web and thereby causes a spreading of the web. The web edges of the warped textile web are thus subjected to a defined straightening force to the outside, ie in the direction of the weft of the textile web. The result is a component of force that seeks to re-shape the parallelogram structure into the original orthogonal structure.
Hierbei ergibt sich durch die Schrägstellung der Richträder ausgehend von Aufnadelstelle, in welcher ein minimaler Spreizungswert vorliegt, ein Ansteigen des Spreizungswertes der Warenbahn bis zum einem maximalen Spreizungswert und nach Überschreiten dessen ein Abnehmen des Spreizungswertes der Warenbahn bis zur Abnadelstelle. Da durch die Richträder per se zumindest ein geringfügiger Bogenverzug in die Warenbahn eingebracht wird, ist der Nadelrichtanordnung häufig eine Bogenrichtwalzenanordnung nachgeschaltet.This results from the inclination of the directional wheels starting from Aufnadelstelle, in which there is a minimum spread value, an increase in the spread value of the web to a maximum spread value and after exceeding a decrease in the spread value of the web to the Abnadelstelle. Since at least a slight bow distortion is introduced by the directional wheels per se in the web, the Nadelrichtanordnung is often followed by a Bogenrichtwalzenanordnung.
Entscheidend für den Umfang der durch die Nadelrichtanordnung eingebrachten Restverzüge, insbesondere Bogenverzüge ist jedoch der Zeitpunkt des Abnehmens bzw. Abnadelns der textilen Warenbahn von den Richträdern. So erhöht sich beispielsweise der durch die Nadelrichtanordnung eingebrachte Bogenverzug bei einem zu späten Abnadeln der Warenbahn von den Richträdern, wohingegen bei einem zu frühen Abnadeln noch so hohe Richtkräfte auf die Warenbahn wirken, dass die Warenbahn nahezu aus den Richträdern gerissen wird, wodurch Kantenverzüge bis hin zur Beschädigung der Warenkanten entstehen können. Der Zeitpunkt der Abnadelung der Warenbahn bzw. die Auswahl der Abnadelstelle von den Richträdern ist insbesondere abhängig von den Materialeigenschaften, insbesondere deren Elastizität und/oder dem Warenbahnzustand, insbesondere der Stärke des vorliegenden Warenverzugs. Auch kommt der Breite der Warenbahn beim Aufnadeln eine besondere Bedeutung zu, welche aufgrund der maschinellen Förderung der Warenbahn üblicherweise die Breite der Warenbahn im unbelasteten Zustand unterschreitet. Bei herkömmlichen Nadelrichtanordnungen erfolgt die Abnadelung der Warenbahn unabhängig von deren Warenbahneigenschaften immer gleich, so dass zum Teil hohe Restverzüge in die Warenbahn eingebracht werden, die zu einem erhöhten maschinellen Aufwand in deren Nachkorrektur führen.Decisive for the extent of the introduced by the Nadelrichtanordnung residual distortions, especially sheet distortion is the time of removal or Abnadelns the textile web of the straightening wheels. For example, the bow distortion introduced by the needle straightening arrangement increases if the web is too late to be straightened from the straightening wheels, whereas if straightening is too early, even high straightening forces act on the fabric that the web is almost torn from the straightening wheels, causing edge distortion all the way may result to damage the fabric edges. The timing of the needling of the web or the selection of the Abnadelstelle of the straightening wheels is particularly dependent on the material properties, in particular their elasticity and / or the condition of the web, in particular the strength of the present goods delay. Also, the width of the web when needling special importance, which usually falls below the width of the web in the unloaded state due to the machine promotion of the web. In conventional Nadelrichtanordnungen the needling of the web takes place regardless of their web properties always the same, so that some high residual distortions are introduced into the web, which lead to increased mechanical complexity in the post-correction.
Eine Nadelrichtanordnung gemäß dem Oberbegriff des Anspruchs 1 ist aus
Ausgehend hiervon liegt der Erfindung die Aufgabe zugrunde, eine Nadelrichtanordnung und ein zugehöriges Verfahren zur Einstellung der Abnadelstelle einer Nadelrichtanordnung anzugeben, welches eine im Vergleich zu bekannten Nadelrichtanordnungen eine verbesserte Richtwirkung aufweist. Die Aufgabe wird ausgehend von einer Nadelrichtanordnung gemäß dem Oberbegriff des Patentanspruches 1 durch dessen kennzeichnende Merkmale gelöst. Die Merkmale des erfindungsgemäßen Verfahrens sind in dem Patentanspruch 8 aufgeführt.Proceeding from this, the present invention seeks to provide a Nadelrichtanordnung and an associated method for adjusting the Abnadelstelle a Nadelrichtanordnung, which has an improved directivity compared to known Nadelrichtanordnungen. The object is achieved on the basis of a Nadelrichtanordnung according to the preamble of claim 1 by its characterizing features. The features of the method according to the invention are listed in the
Der wesentliche Aspekt der erfindungsgemäßen Vorrichtung ist darin zu sehen, dass die Abnadelwalze schwenkbar um eine Schwenkachse ausgebildet ist. Hierdurch ist eine warenbahnindividuelle Einstellung der Abnadelstelle möglich, welche zu einer deutlich verbesserten Verzugskorrektur führt.The essential aspect of the device according to the invention is to be seen in that the needle roller is pivotally formed about a pivot axis. As a result, a web-individual adjustment of the Abnadelstelle is possible, which leads to a significantly improved distortion correction.
Weiterhin vorteilhaft ist durch Verschwenken der Abnadelwalze um die den ersten und zweiten Drehpunkt der Nadelrichträder aufnehmende Schwenkachse die Abnadelstelle einstellbar.Further advantageous is the Abnadelstelle adjustable by pivoting the Abnadelwalze to the first and second pivot point of the needle-directional receiving pivot axis.
Die Nadelrichträder sind zur Erzeugung eines Spreizungsprofils mit einem ersten und zweiten Spreizungsprofilbereich ausgebildet, wobei der erste und zweite Spreizungsprofilbereich näherungsweise symmetrisch zueinander sind. Vorteilhaft ist die Abnadelstelle im zweiten Spreizungsprofilbereich einstellbar.The needle straightening wheels are designed to produce a spreading profile with a first and second spreading profile area, the first and second spreading profile area being approximately symmetrical to one another. Advantageously, the Abnadelstelle is adjustable in the second Spreizungsprofilbereich.
Der maximale Spreizungswert des Spreizungsprofils der Richträder liegt an derjenigen stirnseitigen Umfangsstelle der Richträder vor, an der der Abstand der der Schwenkachse gegenüberliegenden stirnseitigen Umfangsstelle zur jeweiligen Schwenkachse maximal ist. Vorzugsweise nimmt im zweiten Spreizungsprofilbereich der Spreizungswert vom maximalen Spreizungswert zur Abnadelstelle hin abnimmt.The maximum spread value of the spreading profile of the straightening wheels is present at that end-side circumferential point of the straightening wheels, at which the distance of the pivot axis opposite the front circumferential point to the respective pivot axis is maximum. Preferably, in the second spread profile range, the spread value decreases from the maximum spread value toward the point of needling.
Ebenfalls ist Gegenstand der vorliegenden Erfindung ein Verfahren zur Einstellung der Abnadelstelle einer zumindest zwei Nadelrichträder aufweisenden Nadelrichtanordnung zur Verzugskorrektur einer geförderten, insbesondere textilen Warenbahn, bei dem die geförderte Warenbahn mit den gegenüberliegenden Warenkanten an einer Aufnadelstelle auf die Nadelrichträder aufgebracht wird und an einer Abnadelstelle von den Nadelrichträdern wieder abgenommen wird. Vorteilhaft wird die Abnadelstelle mittels einer schwenkbaren Abnadelwalze warenbahnabhängig eingestellt. Zur Einstellung der Abnadelstelle wird die Abnadelwalze vorzugsweise entlang des Umfangs der Nadelrichträdern verschwenkt, wobei die Abnadelstelle abhängig von den Materialeigenschaften der Warenbahn, insbesondere deren Elastizität und/oder der Stärke des Verzugs der Warenbahn und/oder der Breite der Warenbahn an der Aufnadelstelle eingestellt wird.The subject matter of the present invention is also a method for adjusting the Abnadelstelle a at least two needle directions having needle straightening arrangement for distortion correction of a subsidized, especially textile web, in which the conveyed web is applied with the opposite edges of the fabric at a Aufnadelstelle on the Nadelrichträder and at a Abnadelstelle of the Needle direction wheels is removed again. Advantageously, the Abnadelstelle means a pivotable Abnadelwalze trajectory adjusted. To set the Abnadelstelle the Abnadelwalze is preferably pivoted along the circumference of Nadelrichträdern, the Abnadelstelle is adjusted depending on the material properties of the web, in particular their elasticity and / or the strength of the warpage of the web and / or the width of the web at the Aufnadelstelle.
Die Erfindung soll nachfolgend anhand von Ausführungsbeispielen im Zusammenhang mit den Figuren näher erläutert werden. Zudem ergeben sich Weiterbildungen, Vorteile und Anwendungsmöglichkeiten der Erfindung auch aus der nachfolgenden Beschreibung von Ausführungsbeispielen und aus den Figuren. Dabei sind alle beschriebenen und/oder bildlich dargestellten Merkmale für sich oder in beliebiger Kombination grundsätzlich Gegenstand der Erfindung, unabhängig von ihrer Zusammenfassung in den Ansprüchen oder deren Rückbeziehung. Auch wird der Inhalt der Ansprüche zu einem Bestandteil der Beschreibung gemacht.The invention will be explained in more detail by means of embodiments in conjunction with the figures. In addition, developments, advantages and possible applications of the invention also result from the following description of embodiments and from the figures. In this case, all described and / or illustrated features alone or in any combination are fundamentally the subject of the invention, regardless of their summary in the claims or their dependency. Also, the content of the claims is made an integral part of the description.
Es wird aber ausdrücklich darauf hingewiesen, dass die Erfindung keinesfalls auf die angegebenen Beispiele beschränkt sein soll. Es zeigen
- Fig. 1
- beispielhaft eine perspektivische Ansicht einer erfindungsgemäßen Nadelrichtanordnung,
- Fig. 2
- beispielhaft einen schematischen Querschnitt durch eine Richtmaschine umfassend eine Nadelrichtanordnung gemäß
Figur 1 sowie weitere Walzenanordnungen und - Fig. 3
- beispielhaft eine schematischen Ansicht auf das durch die Nadelrichtanordnung erzeugte Spreizungsprofil der Warenbahn.
- Fig. 1
- by way of example a perspective view of a needle straightening arrangement according to the invention,
- Fig. 2
- by way of example a schematic cross section through a straightening machine comprising a needle straightening arrangement according to FIG
FIG. 1 as well as other roller arrangements and - Fig. 3
- by way of example a schematic view of the spreading profile of the fabric web produced by the needle straightening arrangement.
In
In
Beispielsweise bildet das Maschinengestell 5 ein starres, rechteckförmiges Rahmengestell aus, durch welches die Warenbahn W hindurch gefördert werden kann und dabei mehreren Bearbeitungsschritten unterzogen werden kann. Der prinzipielle technische Aufbau derartiger Richtmaschinen 4 und insbesondere des hierzu vorgesehenen Maschinengestells 5 ist aus dem Stand der Technik hinreichend bekannt und kann unterschiedlichste Realisierungsformen aufweisen.For example, the
Zum Richten von Verzügen einer über die Nadelrichtanordnung 1 geförderten, insbesondere textilen Warenbahn W ist das erste Nadelrichtrad 2 drehbar um einen ersten Drehpunkt DP1 und schwenkbar um eine erste Schwenkachse SA1 und das zweite Nadelrichtrad 3 drehbar um einen zweiten Drehpunkt DP2 und schwenkbar um eine zweite Schwenkachse SA2 ausgebildet.For straightening a web of material W conveyed via the needle straightening arrangement 1, the first needle straightening
Gemäß dem in
Die mittels der Breitstreckwalzenanordnung 9 faltenfrei zugeführte Warenbahn W wird mit Ihren gegenüberliegenden Warenkanten W', W" an einer Aufnadelstelle NAUF auf die Nadelrichträder 2, 3 aufgebracht wird und an einer Abnadelstelle NAB mittels einer Abnadelwalze 11 von den Nadelrichträdern 2, 3 wieder abgenommen wird.The creases supplied by means of the
Unter Aufnadelstelle NAUF wird hierbei näherungsweise diejenige stirnseitige Umfangsstelle der Nadelrichträder 2, 3 verstanden, an der die jeweilige Schwenkachse SA1, SA2 der Nadelrichträder 2, 3 näherungsweise die Stirnseite der Nadelrichträder 2, 3 schneidet. Die geförderte Warenbahn W wird dort derart zugeführt, dass diese an der Aufnadelstelle NAUF von den Nadeln des jeweiligen Nadelrichtrades 2, 3 erfasst wird und anschließend den angestellten Richträdern 2, 3 folgt, wodurch eine Spreizung der Warenbahn W nach außen erzeugt wird.By Aufnadelstelle N AUF is hereby approximately the one end-side circumferential point of the
In
Das Spreizungsprofil SP weist somit einen ersten und zweiten Spreizungsprofilbereich SP1, SP2 auf, die symmetrisch zueinander verlaufen. Im ersten Spreizungsprofilbereich SP1 steigt die Spreizungwert S der Warenbahn W entlang des stirnseitigen Umfangs der Richträder 2, 3 ausgehend von einem minimalen Spreizungswert SMIN an der Aufnadelstelle NAUF bis zu einer maximalen Spreizungswert SMAX kontinuierlich an. Im daran anschließenden zweiten Spreizungsprofilbereich SP2 nimmt der Spreizungswert S der Warenbahn W entlang des stirnseitigen Umfangs der Richträder 2, 3 vom maximalen Spreizungswert SMAX bis hin zum minimalen Spreizungswert SMIN wieder abnimmt.The spread profile SP thus has a first and second spread profile area SP1, SP2, which run symmetrically to each other. In the first spread profile area SP1, the spread value S of the material web W increases continuously along the frontal circumference of the
Der maximale Spreizungswert SMAX der Richträder 2, 3 liegt hierbei an derjenigen stirnseitigen Umfangsstelle der Richträder 2, 3 vor, an der der Abstand von der stirnseitigen Umfangsstelle zur jeweiligen Schwenkachse SA1, SA2 maximal ist, d.h. der Schnittpunkt zwischen einer beide Schwenkpunkte SP1, SP2 aufnehmenden und senkrecht zu den Schwenkachsen SA1, SA2 verlaufenden Ebene E und dem der jeweiligen Schwenkachse SA1, SA2 gegenüberliegenden Stirnseite der Richträder 2, 3. Dadurch ergibt sich der in
Erfindungsgemäß ist zum Abnehmen der Warenbahn W von den Richträdern 2, 3 die Abnadelwalze 11 schwenkbar um eine den ersten und zweiten Drehpunkt DP1, DP2 der Nadelrichträder 2, 3 aufnehmende Schwenkachse SA ausgebildet, und zwar derart, dass durch Verschwenken der Abnadelwalze 11 um die Schwenkachse SA die Abnadelstelle NAB entlang des stirnseitigen Umfangs der Richträdern 2, 3 einstellbar ist. Dadurch kann besonders vorteilhaft abhängig von den Eigenschaften der zu verarbeitenden Warenbahn W - wie beispielsweise deren Elastizität und/oder die Stärke des vorliegenden Warenverzugs - die Abnadelstelle NAB der Nadelrichtanordnung 1 individuell eingestellt werden, um dadurch ein deutlich verbessertes Richtergebnis zu erhalten. Die Einstellung der Abnadelstelle NAB kann entweder manuell oder maschinell mit Hilfe eines Regelkreises durchgeführt werden.According to the invention for removing the web W of the straightening
Unter Abnadelstelle NAB wird erfindungsgemäß diejenige stirnseitige Umfangsstelle der Nadelrichträder 2, 3 verstanden, an der mittels der Abnadelwalze 11 die Warenbahn W von den Nadeln des jeweiligen Nadelrichtrades 2, 3 gelöst wird und somit die von den Nadelrichträder 2, 3 an der jeweiligen stirnseitigen Umfangsstelle erzeugte Spreizwirkung aufgehoben wird.Under Abnadelstelle N AB according to the invention that end-side circumferential point of the
Die Abnadelstelle NAB kann erfindungsgemäß im stirnseitigen Umfangsbereich der Nadelrichträder 2, 3 verstellt werden, und zwar vorzugsweise im zweiten Spreizungsprofilbereich SP2 gemäß dem in
Die Erfindung wurde voranstehend an einem Ausführungsbeispiel beschrieben.The invention has been described above by means of an embodiment.
- 11
- NadelrichtanordnungNeedle directing assembly
- 22
- erstes Nadelrichtradfirst needle direction wheel
- 33
- zweites Nadelrichtradsecond needle direction wheel
- 44
- Richtmaschinestraightener
- 55
- Maschinengestellmachine frame
- 66
- Verstellmechanikadjustment mechanism
- 77
- Einlaufwalzeinlet roller
- 88th
- WalzenzugwerkWalzenzugwerk
- 99
- BreitstreckwalzenanordnungExpander roller arrangement
- 1010
- BogenrichtwalzenanordnungArc straightening roller arrangement
- 1111
- AbnadelwalzeAbnadelwalze
- BB
- WarenbahnbreiteWeb width
- DP1DP1
- erster Drehpunktfirst fulcrum
- DP2DP2
- zweiter Drehpunktsecond pivot
- Ee
- Ebenelevel
- NAB N AB
- AbnadelstelleAbnadelstelle
- NAUF N UP
- AufnadelstelleAufnadelstelle
- SS
- Spreizungswertspreading value
- SASA
- Schwenkachseswivel axis
- SASA
- Schwenkachseswivel axis
- SA1SA1
- erste Schwenkachsefirst pivot axis
- SA2SA2
- zweite Schwenkachsesecond pivot axis
- SMAX S MAX
- maximaler Spreizungswertmaximum spread value
- SMIN S MIN
- minimaler Spreizungswertminimum spread value
- SPSP
- Spreizungsprofilspreading profile
- SP1SP1
- erster Spreizungsprofilbereichfirst spreading profile area
- SP2SP2
- zweiter Spreizungsprofilbereichsecond spreading profile area
- WW
- Warenbahnweb
- W', W"W ', W "
- WarenbahnkantenWeb edges
- WLWL
- WarenlaufrichtungRunning direction
Claims (9)
- A needle straightening device for correcting the warpage of an advanced material web (W), in particular a textile web comprising at least a first needle straightening wheel (2) designed to be rotatable about a first point of rotation (DP1) and pivotable about a first pivot axis (SA1), and a second needle straightening wheel (3) designed to be rotatable about a second point of rotation (DP2) and pivotable about a second pivot axis (SA2), wherein the advanced material web (W) with the opposite material edges (W', W") is positioned onto the needle straightening wheels (2, 3) at an on-needle point (NAUF) and is subsequently taken off the needle straightening wheels (2, 3) by means of an off-needle roller (11) at an off-needle point (NAB), characterised in that the off-needle roller (11) is designed to be pivotable about a pivot axis (SA).
- The needle straightening device according to claim 1, characterised in that the off-needle point (NAB) is adjustable by pivoting the off-needle roller (11) about the pivot axis (SA) accommodating the first and second points of rotation (DP1, DP2) of the needle straightening wheels (2, 3).
- The needle straightening device according to claim 1 or 2, characterised in that the needle straightening wheels (2, 3) are designed so as to generate a spreading profile (SP) with a first and a second spreading profile region (SP1, SP2), wherein the first and second spreading profile regions (SP1, SP2) are approximately symmetrical with respect to one another.
- The needle straightening device according to claim 3, characterised in that the off-needle point (NAB) is adjustable in the second spreading profile region (SP2).
- The needle straightening device according to one of the claims 3 or 4, characterised in that the maximum spread (SMAX) of the spreading profile (SP) of the straightening wheels (2, 3) occurs at that frontal periphery point of the straightening wheels (2, 3) at which the distance between the frontal periphery point located opposite the pivot axis (SA1, SA2) and the respective pivot axis (SA1, SA2) is a maximum.
- The needle straightening device according to claim 5, characterised in that in the second spreading profile region (SP2) the spread (S) reduces from the maximum spread (SMAX) towards the off-needle point (NAB).
- A method for adjusting the off-needle point (NAB) of a needle straightening device (1) having at least two needle straightening wheels (2, 3) for purposes of correcting the warpage of an advanced material web (W), in particular a textile web, in which the advanced material web (W) with the opposite material edges (W', W") is positioned onto the needle straightening wheels (2, 3) at an on-needle point (NAUF) and is subsequently taken off the needle straightening wheels (2, 3) at an off-needle point (NAB), characterised in that the off-needle point (NAB) is adjusted individually for each material web by means of a pivotable off-needle roller (11).
- The method according to claim 8, characterised in that, for purposes of adjusting the off-needle point (NAB) the off-needle roller (11), is pivoted along the periphery of the needle straightening wheels (2, 3),
- The method according to claim 8 or 9, characterised in that the off-needle point (NAB) is adjusted as a function of the material properties of the material web (W), in particular its elasticity and/or the degree of warpage of the material web (W) and/or the width (B) of the material web (W) at the on-needle point (NAUF).
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102011113665.0A DE102011113665B4 (en) | 2011-09-20 | 2011-09-20 | Needle straightening arrangement for distortion correction of a conveyed web and an associated method |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2573254A1 EP2573254A1 (en) | 2013-03-27 |
EP2573254B1 true EP2573254B1 (en) | 2014-08-13 |
Family
ID=46762942
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20120182724 Active EP2573254B1 (en) | 2011-09-20 | 2012-09-03 | Needle draft correcting device for correcting the draft of a textile sheet and associated method |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP2573254B1 (en) |
DE (1) | DE102011113665B4 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS591763A (en) * | 1982-06-19 | 1984-01-07 | 株式会社川上製作所 | Stenter machine |
DE3715086A1 (en) * | 1986-11-14 | 1988-05-26 | Mahlo Gmbh & Co Kg | Method and device for straightening weft threads in fabrics |
CS8905151A3 (en) * | 1989-09-07 | 1992-01-15 | Elitex Zavody Textilniho | Device for straightening weft threads in textile bands |
JPH11222767A (en) * | 1998-02-05 | 1999-08-17 | Me Kaihatsu Giken:Kk | Weft straightener |
JP2001200468A (en) * | 2000-01-18 | 2001-07-27 | Me Kaihatsu Giken:Kk | Weft straightner |
DE102007035285B4 (en) * | 2007-07-27 | 2014-11-20 | Mahlo Gmbh & Co Kg | Device for delay correction of a conveyed, in particular textile web |
DE102010024618A1 (en) * | 2010-01-15 | 2011-07-21 | Mahlo GmbH & Co. KG, 93342 | Device for delay correction of a conveyed web and associated method |
-
2011
- 2011-09-20 DE DE102011113665.0A patent/DE102011113665B4/en not_active Expired - Fee Related
-
2012
- 2012-09-03 EP EP20120182724 patent/EP2573254B1/en active Active
Also Published As
Publication number | Publication date |
---|---|
EP2573254A1 (en) | 2013-03-27 |
DE102011113665A1 (en) | 2013-03-21 |
DE102011113665B4 (en) | 2016-01-07 |
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