EP0549763B1 - Device for producing synthetic yarn - Google Patents
Device for producing synthetic yarn Download PDFInfo
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- EP0549763B1 EP0549763B1 EP92915061A EP92915061A EP0549763B1 EP 0549763 B1 EP0549763 B1 EP 0549763B1 EP 92915061 A EP92915061 A EP 92915061A EP 92915061 A EP92915061 A EP 92915061A EP 0549763 B1 EP0549763 B1 EP 0549763B1
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- European Patent Office
- Prior art keywords
- filaments
- air
- plates
- air deflecting
- yarn
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/08—Melt spinning methods
- D01D5/088—Cooling filaments, threads or the like, leaving the spinnerettes
- D01D5/092—Cooling filaments, threads or the like, leaving the spinnerettes in shafts or chimneys
Definitions
- the invention relates to a device for producing a synthetic thread according to the preamble of claim 1.
- a device for producing a synthetic thread according to the preamble of claim 1.
- Synthetic threads can be obtained by assembling a plurality of filaments extruded from a spinneret. It is customary to cool the filaments emerging from the spinneret in the liquid state in order to solidify the thermoplastic material from which they consist, with cooling air, then to assemble them and finally to wind them up into a coil. If necessary, the filaments, while they are put together to form a thread, are treated in a suitable finishing device with a preparation in the sense of a textile finishing.
- the filaments pass through a tube or a box immediately below the spinneret, with cooling air flows directed transversely onto the filament bundle.
- These cooling air flows can be generated by applying an air overpressure outside the pipe or box.
- the tube or box it is also possible for the tube or box to be porous and for ambient air to surround the tube or box with atmospheric pressure. In this case, the high filament speed in the box or tube creates a negative pressure, so that atmospheric air is sucked in and as Cooling air jet is directed across the filament bundle.
- the so-called microfibers can be obtained, which are understood to be spun threads whose filaments have a diameter of approximately 6 to 12 microns after the spinning delay.
- the extremely fine filaments for micro threads are particularly prone to failure when cooled with cooling air, i.e. u. a. that their Uster values are adversely affected by turbulence that may occur in the blow box.
- the invention is therefore based on the object to provide a device in which, on the one hand, the disruptive influences - possibly caused by the running thread of air turbulence in the blow box - on the spun filaments and, on the other hand, the otherwise required length of the technical threads between the spinneret and the winding station Wegs can be shortened by improved air cooling in the thread shaft.
- sheet metal is understood to be any thin body with a large width and length.
- the device described in claim 3 is more effective, on the one hand, to strip off the warm air surrounding the filaments and, on the other hand, to keep the turbulence prevailing in the blow box from the filaments.
- Claim 7 describes a device for connecting the components of the air deflection device according to the invention.
- Claim 8 describes a particularly advantageous design of the air deflection device, which enables the threads or filaments to be introduced into the air deflection device.
- the device described in claim 9 achieves protection of the filaments or the thread in a location of the cooling device which is particularly at risk of turbulence.
- Claims 12 to 17 relate to particularly advantageous finishing devices in connection with the air deflection device according to the invention.
- Claim 17 presents a device which has proven itself in connection with coarse-gauge technical threads (industrial yarns) as a measure for reducing the thread shaft length or the path bridged by the thread between the spinneret and the winding device in conventional devices of comparable cooling capacity.
- Claims 18 to 21 are directed to particularly advantageous embodiments of the device described in claim 17.
- the devices for producing filaments 18 shown in FIGS. 1 to 3 are essentially of the same construction. This means that they have a blow box as a cooling section 10, in the upper part or ceiling of which a known nozzle packet 12 is inserted, the nozzle plate 14 of which is used for Melt spinning nozzle holes 16 usual.
- the number of nozzle bores 16 may be between 50 and 200.
- the nozzle bores 16 have a clear width, which is dimensioned such that, taking into account the flow rate passing through them, the melt and its viscosity are about 25 to 50 cm after the so-called "onion" filaments with diameters, ie titers, which form at the outlet opening of the nozzle Form values.
- the filaments are usually made of thermoplastic, e.g. Polyester or polyamide, which is pressed in the molten state by an extruder, not shown, through a filter 20 through the openings 16.
- the filaments 18 emerging from the openings 16 in the soft state are exposed to a stream of cold air for consolidation in the blow box.
- the air flow may flow, for example, perpendicular to the drawing direction A in the drawing, that is to say cutting the filaments essentially vertically.
- the air speed of the blown air flow can be between 0.1 and 0.6 m / s.
- the filaments are combined in a manner known per se to form a bundle merging into a thread 24 and passed through an opening in the bottom 20 ′ of the blow box 10 which is coaxially opposite the spinneret 12.
- the air deflection device according to the invention is fastened in the opening of the base 20 '. It consists of several sheets, for example three nested tubes 30, the exterior of which is connected to the bottom 20 'of the blow chamber 10 so that the device can be moved perpendicular to the bottom 20', as shown by the double arrow C.
- the tubes preferably each have an axial length of 60 to 100 mm and are interleaved in such a way that the device has a total length, measured from the upper edge of the outer tube to the lower edge of the inner tube, of approximately 80 to 150 mm.
- the diameter of the tubes can be between 10 to 30 mm, but may also be wider or smaller.
- the nested tubes 30 are connected by webs 32 so that they form air gaps between them. As shown in Fig. 1, the tubes 30 are coaxial with one another and are offset in the axial direction so that their upper edges are each at the same distance from the filaments located outside in the filament bundle. Due to the vertical adjustability of the tubes, the distance between the filaments and the upper edges of the tubes can be adjusted as required.
- the tubes keep the filaments in a relatively calm zone.
- the tubes 30 are slotted.
- the slots lie in the same longitudinal sectional plane and form a slot 36 through which the filaments can be introduced into a shaft 34 enclosed by the tubes 30.
- the inner tube comprises an avivating device, which in the embodiment shown is formed by a ring 22 which is slotted like the tubes 30 for inserting the filaments 18.
- the finishing device is used in a known manner to apply a preparation in the form of a liquid to the filaments, which is supplied via lines (not shown), and to combine the individual filaments in a thread 24.
- the ring of the leveling device 22 can be replaced by conventional preparation pins or nozzles which interact with metering pumps.
- the device shown in FIG. 2 differs in the shape of the tubes from the device shown in FIG. 1.
- the air deflecting device according to FIG. 2 consists of three nested tubes, the upper and lower edges of which widen outwards in a funnel shape, these helping to an increased extent to prevent the undesirable turbulence from the filaments 18 and these through the tubes from the filaments to radially deflect stripped air from the filament bundle or from the assembled thread 24.
- the device shown in Fig. 3 has nested sheets 30 which each have the shape of the lateral surface of a truncated cone.
- the upper edge of the sheets lies closely against the outer filaments of the filament bundle and the lower edge is angled away from the filament bundle, so that an increased deflection of the air stripped from the sheets 30 is achieved.
- the air deflecting devices according to FIGS. 2 and 3 can also be moved both in the axial direction of the filament bundle and pivotably to the latter, as indicated by the arrows C and D.
- the cross-sectional profile of the tubes in the described embodiments advantageously corresponds to the cross-section of the bundle of filaments emerging from the spinneret bores.
- the function of the series of tubes used in the exemplary embodiment as an air deflecting device is that the air emerging from the bundle is collected and discharged. It is avoided that the leaked air can impair the filament bundle due to turbulence and / or that it can hinder the air that continues to escape.
- the device 38 shown in FIGS. 4 to 6 serves to strip the warm air surrounding the filaments 18 from them.
- the shaft 40 consists of a housing 42 with a rectangular cross section, which tapers downwards. Two opposing walls 44 and 46 are penetrated by slots 48a to 48f lying parallel to one another, the length of which essentially corresponds to the width of the walls 44 and 46 and that in the opposing walls 44, 46 each in pairs inside the housing 42 at the same height lie.
- the baffles 52a to 52f are articulated in such a way that they can be pivoted from their working position shown in full line to a position indicated by the broken line, which it enables filaments 18 to be passed through the chute 40 unhindered from the start of the machine.
- the sheets 52 are preferably kinked at their edge remote from the hinge 50, in such a way that the kinked, narrow part of the edge is substantially parallel to and closely aligned with the thread 24. This part serves to strip the warm air from the filaments 18 moving in the direction of the arrow P and to lead it out of the housing 42 through the slot 48 on the other edge of the sheet 52.
- the air supply openings 56 preferably lie under the sheet 52 lying in their working positions and supply the filaments 18 with comparatively cool air, which is stripped off by the next pair of sheets 52b and 52e lying in the thread running direction and discharged via slots 48b and 48e. In the embodiment shown, this process is repeated a total of three times, the air last supplied via the opening 56c being discharged with the cooled filaments 18 from the shaft 40 through an opening 58 located in the bottom thereof.
- the exchange of the air surrounding the thread makes it possible to shorten the conventional length of the thread chute 40 without reducing its cooling capacity.
- the aim of the invention on the one hand, to reduce the air turbulence possibly arising from the thread running and, on the other hand, to remove the warm air surrounding the thread, is advantageously achieved.
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- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
Abstract
Description
Die Erfindung betrifft eine Vorrichtung zur Herstellung eines synthetischen Fadens gemäß dem Oberbegriff des Anspruchs 1.
Eine derartige Vorrichtung ist aus der DE-A-1 914 556 bekannt.
Synthesefäden können durch Zusammenfügen einer Vielzahl aus einer Spinndüse extrudierter Filamente gewonnen werden. Dabei ist es üblich, die in flüssigem Zustand aus der Spinndüse austretenden Filamente zur Verfestigung des thermoplastischen Kunststoffes, aus dem sie bestehen, mit Kühlluft abzukühlen, danach zusammenzufügen und schließlich zu einer Spule aufzuwickeln. Gegebenenfalls werden die Filamente, während sie zu einem Faden zusammengefügt werden, in einer geeigneten Aviviervorrichtung mit einer Präparation im Sinne einer textilen Veredelung behandelt.The invention relates to a device for producing a synthetic thread according to the preamble of claim 1.
Such a device is known from DE-A-1 914 556.
Synthetic threads can be obtained by assembling a plurality of filaments extruded from a spinneret. It is customary to cool the filaments emerging from the spinneret in the liquid state in order to solidify the thermoplastic material from which they consist, with cooling air, then to assemble them and finally to wind them up into a coil. If necessary, the filaments, while they are put together to form a thread, are treated in a suitable finishing device with a preparation in the sense of a textile finishing.
Zur Abkühlung durchlaufen die Filamente unmittelbar unterhalb der Spinndüse ein Rohr oder einen Kasten, wobei Kühlluftströme quer auf das Filamentbündel gerichtet sind. Diese Kühlluftströme können dadurch erzeugt werden, daß außerhalb des Rohres oder Kastens ein Luft-Überdruck angelegt wird. Es ist jedoch namentlich bei hohen Filamentgeschwindigkeiten auch möglich, daß das Rohr bzw. der Kasten porös ist und daß Umgebungsluft mit atmosphärischem Druck das Rohr bzw. den Kasten umgibt. In diesem Falle wird durch die hohe Filamentgeschwindigkeit in dem Kasten bzw. Rohr ein Unterdruck entstehen, so daß atmosphärische Luft eingesaugt und als Kühlluftstrahl quer auf das Filamentbündel gerichtet wird.For cooling, the filaments pass through a tube or a box immediately below the spinneret, with cooling air flows directed transversely onto the filament bundle. These cooling air flows can be generated by applying an air overpressure outside the pipe or box. However, especially at high filament speeds, it is also possible for the tube or box to be porous and for ambient air to surround the tube or box with atmospheric pressure. In this case, the high filament speed in the box or tube creates a negative pressure, so that atmospheric air is sucked in and as Cooling air jet is directed across the filament bundle.
Auf diese Weise sind einerseits und als Beispiel für Filamente extrem feiner Titer die sogenannten Mikrofäden zu gewinnen, worunter Spinnfäden verstanden werden, deren Filamente nach dem Spinnverzug einen Durchmesser von ca. 6 bis 12 Mikrometer aufweisen. Allerdings sind die extrem feinen Filamente für Mikrofäden beim Abkühlen mit Kühlluft besonders störanfällig, d.h. u. a., daß ihre Usterwerte durch möglicherweise im Blaskasten auftretende Turbulenzen nachteilig beeinflußt werden.In this way, on the one hand and as an example for filaments of extremely fine titer, the so-called microfibers can be obtained, which are understood to be spun threads whose filaments have a diameter of approximately 6 to 12 microns after the spinning delay. However, the extremely fine filaments for micro threads are particularly prone to failure when cooled with cooling air, i.e. u. a. that their Uster values are adversely affected by turbulence that may occur in the blow box.
Andererseits werden auch die aus Filamenten wesentlich gröberer Titer zusammengesetzten technischen Fäden auf diese Weise gewonnen. Für deren zum Aufwickeln benötigte Abkühlung bzw. Verfestigung sind wesentlich längere Blaskästen bzw. Fadenschächte erforderlich als für Filamente feinerer, textiler Titer.On the other hand, the technical threads composed of filaments of substantially coarser titers are also obtained in this way. For their cooling or consolidation, which is required for winding, much longer blow boxes or thread chutes are required than for filaments of finer, textile titers.
Der Erfindung liegt daher die Aufgabe zugrunde, eine Vorrichtung zu schaffen, in der einerseits die störenden Einflüsse - möglicherweise durch den laufenden Faden erzeugter Luftturbulenzen im Blaskasten - auf die gesponnenen Filamente verringert und andererseits die sonst erforderliche Länge des von technischen Fäden zwischen Spinndüse und Aufwickelstation durchlaufenen Wegs durch eine verbesserte Luftkühlung im Fadenschacht verkürzt werden kann.The invention is therefore based on the object to provide a device in which, on the one hand, the disruptive influences - possibly caused by the running thread of air turbulence in the blow box - on the spun filaments and, on the other hand, the otherwise required length of the technical threads between the spinneret and the winding station Wegs can be shortened by improved air cooling in the thread shaft.
Die Aufgabe wird gelöst durch eine Vorrichtung mit den Merkmalen des Anspruchs 1, wobei als Blech jeder dünne Körper mit großer Breit- und Längserstreckung verstanden wird.The object is achieved by a device having the features of claim 1, wherein sheet metal is understood to be any thin body with a large width and length.
Durch die in Anspruch 2 beschriebene Vorrichtung wird ein erhöhter Schutz der Filamente vor Luftturbulenzen geboten, da die Bleche das kegelförmig enger werdende Filamentbündel begleiten und die aus dem Kegel austretende Luft zunehmend aufnehmen und abführen können. Dabei kann besonders berücksichtigt werden, daß die durch Verdrängung aus dem Filamentkegel entstehenden Luftströmungen gerade im Bereich vor dem Sammelpunkt (= Kegelspitze) ein schädliches Ausmaß annehmen.The device described in claim 2 provides increased protection of the filaments against air turbulence, since the sheets are the cone-shaped bundle of filaments accompany and increasingly absorb and discharge the air emerging from the cone. It can be particularly taken into account that the air currents resulting from displacement from the filament cone assume a harmful extent precisely in the area in front of the collection point (= cone tip).
Die in Anspruch 3 beschriebene Vorrichtung ist in erhöhtem Maße wirksam, einerseits die die Filamente umgebende warme Luft abzustreifen und andererseits die im Blaskasten vorherrschenden Turbulenzen von den Filamenten abzuhalten.The device described in claim 3 is more effective, on the one hand, to strip off the warm air surrounding the filaments and, on the other hand, to keep the turbulence prevailing in the blow box from the filaments.
In den Ansprüchen 4, 5 und 6 werden besonders vorteilhafte Ausführungsformen der erfindungsgemäßen Luftablenkvorrichtung beschrieben.Particularly advantageous embodiments of the air deflection device according to the invention are described in claims 4, 5 and 6.
Anspruch 7 beschreibt eine Vorrichtung zum Verbinden der Bauelemente der erfindungsgemäßen Luftablenkvorrichtung.Claim 7 describes a device for connecting the components of the air deflection device according to the invention.
Anspruch 8 beschreibt eine besonders vorteilhafte Gestaltung der Luftablenkvorrichtung, die es ermöglicht, die Fäden bzw. Filamente in die Luftablenkvorrichtung einzuführen.Claim 8 describes a particularly advantageous design of the air deflection device, which enables the threads or filaments to be introduced into the air deflection device.
Durch die in Anspruch 9 beschriebene Vorrichtung wird erreicht, die Filamente bzw. den Faden in einer besonders turbulenzgefährdeten Stelle der Kühlvorrichtung zu schützen.The device described in claim 9 achieves protection of the filaments or the thread in a location of the cooling device which is particularly at risk of turbulence.
Die in Anspruch 10 und 11 geschilderten vorteilhaften Ausführungsformen der Erfindung gestatten es, die Wirkung der Luftablenkvorrichtung den jeweiligen Gegebenheiten anzupassen.The advantageous embodiments of the invention described in
Die Ansprüche 12 bis 17 betreffen in Zusammenhang mit der erfindungsgemäßen Luftablenkvorrichtung besonders vorteilhafte Aviviervorrichtungen.
Der Anspruch 17 stellt eine Vorrichtung vor, die sich im Zusammenhang mit grobtiterigen technischen Fäden (Industriegarnen) als Maßnahme zur Verringerung der Fadenschachtlänge bzw. des von dem Faden zwischen Spinndüse und Aufwickelvorrichtung überbrückten Wegs bei herkömmlichen Vorrichtungen vergleichbarer Kühlleistung bewährt hat. Die Ansprüche 18 bis 21 sind auf besonders vorteilhafte Ausführungsformen der im Anspruch 17 beschriebenen Vorrichtung gerichtet.Claim 17 presents a device which has proven itself in connection with coarse-gauge technical threads (industrial yarns) as a measure for reducing the thread shaft length or the path bridged by the thread between the spinneret and the winding device in conventional devices of comparable cooling capacity.
Bevorzugte Ausführungsbeispiele der Erfindung sind in der Zeichnung dargestellt und werden im folgenden näher beschrieben.Preferred embodiments of the invention are shown in the drawing and are described in more detail below.
Es zeigen:
- Fig. 1 bis 3
- schematische Darstellungen alternativer Ausführungsformen der erfindungsgemäßen Luftablenkvorrichtung;
- Fig. 1a
- einen Querschnitt durch die in Fig. 1 dargestellte Luftablenkvorrichtung;
- Fig. 4
- einen Längsschnitt durch einen erfindungsgemäßen Fadenschacht;
- Fig. 5
- einen um 90° versetzten Längsschnitt durch den in Fig. 4 dargestellten Fadenschacht;
- Fig. 6
- eine Draufsicht auf den in den Fig. 4 und 5 gezeigten Fadenschacht.
- 1 to 3
- schematic representations of alternative embodiments of the air deflection device according to the invention;
- Fig. 1a
- a cross section through the air deflection device shown in Fig. 1;
- Fig. 4
- a longitudinal section through a thread chute according to the invention;
- Fig. 5
- a 90 ° offset longitudinal section through the thread shaft shown in Fig. 4;
- Fig. 6
- a plan view of the thread shaft shown in Figs. 4 and 5.
Die in den Figuren 1 bis 3 dargestellten Vorrichtungen zum Herstellen von Filamenten 18 sind im wesentlichen von gleichem Aufbau. Das heißt, sie weisen einen Blaskasten als Abkühlstrecke 10 auf, in dessen oberen Teil oder Decke ein an sich bekanntes Düsenpaket 12 eingesetzt ist, dessen Düsenplatte 14 die zum Schmelzspinnen üblichen Düsenbohrungen 16 aufweist. Die Zahl der Düsenbohrungen 16 mag zwischen 50 und 200 liegen. Die Düsenbohrungen 16 haben eine lichte Weite, die so bemessen ist, daß unter Berücksichtigung der sie durchlaufenden Fördermenge die Schmelze und deren Viskosität etwa 25 bis 50 cm nach der sich an der Austrittsöffnung der Düse bildenden sogenannten "Spinnzwiebel" Filamente mit Durchmessern, d. h. Titern bestimmter Werte bilden.The devices for producing
Die Filamente bestehen üblicherweise aus thermoplastischem Kunststoff, z.B. Polyester oder Polyamid, der in aufgeschmolzenem Zustand von einem nicht gezeigten Extruder über ein Filter 20 durch die Öffnungen 16 gepreßt wird. Die in weichem Zustand aus den Öffnungen 16 austretenden Filamente 18 werden zwecks Verfestigung im Blaskasten einem Kaltluftstrom ausgesetzt. Der Luftstrom mag beispielsweise senkrecht zur in der Zeichnung liegenden Abzugsrichtung A, also die Filamente im wesentlichen senkrecht schneidend, strömen. Die Luftgeschwindigkeit des Blasluftstromes kann zwischen 0,1 und 0,6 m/s liegen.The filaments are usually made of thermoplastic, e.g. Polyester or polyamide, which is pressed in the molten state by an extruder, not shown, through a
Die Filamente werden in an sich bekannter Weise zu einem in einen Faden 24 übergehenden Bündel zusammengefaßt und durch eine der Spinndüse 12 koaxial gegenüberliegende Öffnung im Boden 20' des Blaskastens 10 geführt. In der Öffnung des Bodens 20' ist die erfindungsgemäße Luftablenkvorrichtung befestigt. Sie besteht aus mehreren Blechen, z.B. drei ineinander verschachtelten Röhrchen 30, deren Äußeres so mit dem Boden 20' der Blaskammer 10 verbunden ist, daß die Vorrichtung senkrecht zum Boden 20' verschoben werden kann, wie durch den Doppelpfeil C dargestellt ist. Die Röhrchen haben vorzugsweise jeweils eine axiale Länge von 60 bis 100 mm und sind so ineinander verschachtelt, daß die Vorrichtung eine Gesamtlänge, gemessen von der Oberkante des äußeren Röhrchens zur Unterkante des inneren Röhrchens, von etwa 80 bis 150 mm aufweist. Der Durchmesser der Röhrchen kann zwischen 10 bis 30 mm liegen, ggf. aber auch weiter oder geringer sein.The filaments are combined in a manner known per se to form a bundle merging into a
Die ineinander verschachtelten Röhrchen 30 sind durch Stege 32 so miteinander verbunden, daß sie zwischen sich Luftspalte bilden. Wie in Fig. 1 gezeigt, liegen die Röhrchen 30 koaxial zueinander und sind in Achsenrichtung so versetzt, daß ihre oberen Kanten jeweils im gleichen Abstand von den im Filamentenbündel außen gelegenen Filamenten liegen. Durch die senkrechte Verstellbarkeit der Röhrchen läßt sich der Abstand zwischen den Filamenten und den oberen Kanten der Röhrchen den Erfordernissen gemäß verstellen.The
Nicht nur werden die im Inneren der Blaskammer 10 herrschenden Turbulenzen durch die Röhrchen 30, insbesondere das außen gelegene Röhrchen von den Filamenten abgehalten, sondern durch die nahe an den Filamenten gelegenen oberen Kanten der Röhrchen 30 wird auch die von den Filamenten mitgeschleppte und durch die Fäden erwärmte Luft von diesen abgestreift. Diese kann dann durch die zwischen den Röhrchen gebildeten Spalte in den unter dem Boden 20' gelegenen Schacht 26 entkommen, und zwar vorzugsweise in einer von den Filamenten bzw. dem Fadenbündel abweisenden Richtung. Das heißt, daß im Bereich der Bodenplatte des Blaskastens 10, wo die Turbulenzen durch Umwälzungen der Luft besonders stark sein können, die Röhrchen die Filamente in einer verhältnismäßig beruhigten Zone halten.Not only are the turbulences prevailing in the interior of the
Wie in Fig. 1a dargestellt, sind die Röhrchen 30 geschlitzt. Die Schlitze liegen in der gleichen Längsschnittsebene und bilden einen Schlitz 36, durch den die Filamente in einen von den Röhrchen 30 umschlossenen Schacht 34 eingebracht werden können.As shown in Fig. 1a, the
Das innere Röhrchen umfaßt eine Aviviervorrichtung, die in der gezeigten Ausführungsform von einem Ring 22 gebildet ist, der wie die Röhrchen 30 zum Einlegen der Filamente 18 geschlitzt ist. Die Aviviervorrichtung dient in bekannter Weise dazu, auf die Filamente eine Präparation in Form einer Flüssigkeit aufzutragen, die über nicht gezeigte Leitungen zugeführt wird, und die einzelnen Filamente in einen Faden 24 zu vereinen. Gegebenenfalls kann der Ring der Aviviervorrichtung 22 durch Präparationsstifte herkömmlicher Art oder Düsen, die mit Dosierpumpen zusammenwirken, ersetzt werden.The inner tube comprises an avivating device, which in the embodiment shown is formed by a
Die in Fig. 2 dargestellte Vorrichtung unterscheidet sich in der Form der Röhrchen von der in Fig. 1 gezeigten Vorrichtung. Die Luftablenkvorrichtung gemäß Fig. 2 besteht aus drei ineinander verschachtelter Röhrchen, deren obere und untere Kanten sich trichterförmig nach außen hin erweitern, wobei jene in erhöhtem Maße dazu beitragen, die unerwünschten Turbulenzen von den Filamenten 18 abzuhalten und diese die durch die Röhrchen von den Filamenten abgestreifte Luft vom Filamentenbündel bzw. vom zusammengefügten Faden 24 radial abzulenken.The device shown in FIG. 2 differs in the shape of the tubes from the device shown in FIG. 1. The air deflecting device according to FIG. 2 consists of three nested tubes, the upper and lower edges of which widen outwards in a funnel shape, these helping to an increased extent to prevent the undesirable turbulence from the
Die in Fig. 3 gezeigte Vorrichtung weist ineinander verschachtelte Bleche 30 auf, die jeweils die Form der Mantelfläche eines Kegelstumpfes haben. Die obere Kante der Bleche liegt eng an den äußeren Filamenten des Filamentbündels an und die untere Kante weist winklig von dem Filamentenbündel ab, so daß eine verstärkte Ablenkung der von den Blechen 30 abgestreiften Luft erzielt wird.The device shown in Fig. 3 has nested
Wie im Ausführungsbeispiel gemäß Fig. 1 können auch die Luftablenkvorrichtungen gemäß Figuren 2 und 3 sowohl in Achsenrichtung des Filamentbündels als auch schwenkbar zu diesem bewegt werden, wie durch die Pfeile C und D angedeutet ist. Im übrigen gleicht das Querschnittsprofil der Röhrchen in den beschriebenen Ausführungsformen in vorteilhafter Weise dem Querschnitt des aus den Spinndüsenbohrungen austretenden Filamentenbündels.As in the exemplary embodiment according to FIG. 1, the air deflecting devices according to FIGS. 2 and 3 can also be moved both in the axial direction of the filament bundle and pivotably to the latter, as indicated by the arrows C and D. Otherwise, the cross-sectional profile of the tubes in the described embodiments advantageously corresponds to the cross-section of the bundle of filaments emerging from the spinneret bores.
Die Funktion der in dem Ausführungsbeispiel als Luftablenkvorrichtung verwandten Staffel von Rohren besteht darin, daß die aus dem Bündel austretende Luft gesammelt und abgeführt wird. Es wird vermieden, daß die ausgetretene Luft durch Turbulenzen das Filamentbündel beeinträchtigen und/oder die weiterhin austretende Luft behindern kann.The function of the series of tubes used in the exemplary embodiment as an air deflecting device is that the air emerging from the bundle is collected and discharged. It is avoided that the leaked air can impair the filament bundle due to turbulence and / or that it can hinder the air that continues to escape.
Die in den Fig. 4 bis 6 dargestellte Vorrichtung 38 dient dazu, die die Filamente 18 umgebende warme Luft von diesen abzustreifen. Die Vorrichtung 38 besteht aus einem Fadenschacht 40, wie er beispielsweise in Maschinen zum Erspinnen synthetischer technischer Fäden (= Industriegarne) häufig Verwendung findet. Der Schacht 40 besteht aus einem im Querschnitt rechteckigen Gehäuse 42, welches sich nach unten hin verjüngt. Zwei sich gegenüberliegende Wände 44 und 46 sind von parallel zueinander liegenden Schlitzen 48a bis 48f durchdrungen, deren Länge im wesentlichen der Breite der Wände 44 und 46 entspricht und die in den sich gegenüberliegenden Wänden 44, 46 jeweils paarweise im Inneren des Gehäuses 42 auf gleicher Höhe liegen.The
Am unteren Rand der Schlitze 48 befindet sich jeweils ein Scharnier 50a bis 50f, an denen Leit- bzw. Luftabstreichbleche 52a bis 52f so angelenkt sind, daß sie von ihrer in voller Linie gezeigten Arbeitsstellung in eine in gestrichelter Linie angedeutete Stellung verschwenkt werden können, die es ermöglicht, Filamente 18 von Anlauf der Maschine ungehindert durch den Schacht 40 zu führen. Die Bleche 52 sind an ihrem vom Scharnier 50 abgelegenen Rand vorzugsweise geknickt, und zwar so, daß der geknickte, schmale Teil des Randes im wesentlichen parallel zu dem Faden 24 und dicht an diesem ausgerichtet ist. Dieser Teil dient dazu, die warme Luft von den sich in Richtung des Pfeiles P bewegenden Filamenten 18 abzustreifen und durch den am anderen Rand des Bleches 52 liegenden Schlitz 48 aus dem Gehäuse 42 abzuleiten. An einer die Wände 44, 46 des Schachtes 40 verbindenden Seitenwand 54 befinden sich, jeweils unterhalb der Bleche 52 Öffnungen 56, durch die Kaltluft in den Schacht 40 eingeführt werden kann, die die über die Schlitze 48 abgeführte Warmluft ersetzt. Die Luftzufuhröffnungen 56 liegen vorzugsweise unter dem in ihren Arbeitsstellungen liegenden Blechen 52 und führen den Filamenten 18 vergleichsweise kühle Luft zu, die vom in Fadenlaufrichtung liegenden nächsten Paar Blechen 52b und 52e abgestreift und über Schlitze 48b und 48e abgeführt wird. In der dargestellten Ausführungsform wiederholt sich dieser Vorgang insgesamt dreimal, wobei die zuletzt über die Öffnung 56c zugeführte Luft mit den abgekühlten Filamenten 18 aus dem Schacht 40 durch eine in dessen Boden befindliche Öffnung 58 abgeführt wird. Der Austausch der den Faden umgebenden Luft ermöglicht es, die herkömmliche Länge des Fadenschachtes 40 zu verkürzen, ohne dessen Kühlleistung herabzusetzen.At the lower edge of the slots 48 there is a
Aus der vorgehenden Beschreibung ist ersichtlich, daß das Ziel der Erfindung, einerseits die durch den Fadenlauf möglicherweise entstehenden Luftturbulenzen zu vermindern und andererseits die den Faden umgebende Warmluft zu entfernen, in vorteilhafter Weise erreicht wird.From the foregoing description it can be seen that the aim of the invention, on the one hand, to reduce the air turbulence possibly arising from the thread running and, on the other hand, to remove the warm air surrounding the thread, is advantageously achieved.
Claims (21)
- Device for producing a synthetic yarn (24) from filaments which exit as a filament bundle from a spinneret base (14), are cooled with air in a cooling section (10) and are combined at a collecting point (28) into a yarn (24),
characterized in that
provided in yarn running direction downstream of the cooling section (10) and upstream of the collecting point (28) is an air deflecting device in the form of a plate (30), whose top edge lies at right angles and close to the filament bundle and which in the running direction of the filaments (18) adopts an increasing distance from the periphery of the filament bundle. - Device according to claim 1,
characterized in that
the air deflecting device comprises a plurality of plates (30) which preferably overlap one another in the running direction of the filaments (18). - Device according to claim 1 or 2,
characterized in that
the air deflecting devices are bent around the filament bundle. - Device according to claim 3,
characterized in that
the top edges of a plurality of plates (30) are staggered in the shape of an envelope of a funnel. - Device according to claim 3 or 4,
characterized in that
the plates (30) are circular-cylindrical in shape. - Device according to claim 3 or 4,
characterized in that
the plates (30) at their top and bottom edges are widened in the manner of a funnel. - Device according to claims 1 to 4,
characterized in that
the plates have the shape of the generated surface of a truncated cone. - Device according to one of claims 3 to 7,
characterized in that
the air deflecting devices are connected to one another by connecting webs (32). - Device according to one of claims 3 to 8,
characterized in that
the air deflecting device forms a slot (36) lying in a common plane for introduction of the filaments (18). - Device according to one of claims 3 to 9,
characterized in that
the air deflecting device lies close to the exit of the cooling section (10) formed by a cooling shaft. - Device according to one of claims 1 to 10,
characterized in that
the air deflecting device is supported in an axially displaceable manner. - Device according to one of claims 3 to 11,
characterized in that
a reviving device (22) is provided below the top edge of the air deflecting device. - Device according to claim 12,
characterized in that
the reviving device (22) is situated at the level of the air deflecting device. - Device according to claim 12 or 13,
characterized in that
the reviving device (22) is displaceable relative to the air deflecting device. - Device according to one of claims 12 to 14,
characterized in that
the reviving device (22) is of an annular construction. - Device according to claim 15,
characterized in that
a slot conforming to the slot (36) of the air deflecting device is provided in the annular reviving device (22). - Device according to claim 1,
characterized in that
the air deflecting device (38) comprises a plurality of plates (52), which are fastened in an articulated manner to opposing walls (44, 46) of the yarn shaft (40) and are inclined counter to the running direction of the filaments (18) and towards said filaments. - Device according to claim 17,
characterized in that
the plates (52) are situated in pairs at the same level and on opposite sides of the filaments (18). - Device according to one of claims 17 and 18,
characterized in that
the plates (52) are fastened to the walls (44, 46) of the yarn shaft (40) at hinges (50) and may be folded back from the filaments (18). - Device according to one of claims 17 to 19,
characterized in that
air outlet openings (48) are provided in the opposing walls (44, 46) of the yarn shaft (40) above the plates (52). - Device according to one of claims 17 to 20,
characterized in that
openings (56) for supplying cold air are provided in at least one wall (44, 46), which connects the opposing walls (44, 46) of the yarn shaft (40), below the plates (52).
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4124350 | 1991-07-23 | ||
| DE4124350 | 1991-07-23 | ||
| DE4201599 | 1992-01-22 | ||
| DE4201599 | 1992-01-22 | ||
| PCT/DE1992/000590 WO1993002233A1 (en) | 1991-07-23 | 1992-07-21 | Device for producing synthetic yarn |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0549763A1 EP0549763A1 (en) | 1993-07-07 |
| EP0549763B1 true EP0549763B1 (en) | 1995-02-01 |
Family
ID=25905742
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP92915061A Expired - Lifetime EP0549763B1 (en) | 1991-07-23 | 1992-07-21 | Device for producing synthetic yarn |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US5433591A (en) |
| EP (1) | EP0549763B1 (en) |
| KR (1) | KR950013478B1 (en) |
| CN (1) | CN1028777C (en) |
| DE (1) | DE59201340D1 (en) |
| TW (1) | TW240254B (en) |
| WO (1) | WO1993002233A1 (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19535143B4 (en) * | 1994-09-30 | 2006-02-16 | Saurer Gmbh & Co. Kg | Apparatus and method for the thermal treatment of fibers |
| DE19521466C2 (en) * | 1995-06-13 | 1999-01-14 | Reifenhaeuser Masch | Plant for the production of a spunbonded nonwoven web from thermoplastic continuous filaments |
| DE19915762A1 (en) * | 1999-04-08 | 2000-10-12 | Lurgi Zimmer Ag | Cooling system for filament bundles |
| KR20030021619A (en) * | 2001-09-07 | 2003-03-15 | 주식회사 효성 | Manufacture of polyester fibre |
| EP1582610A1 (en) * | 2004-03-25 | 2005-10-05 | Maschinenfabrik Rieter Ag | Cooling filament yarns |
| WO2008055823A2 (en) * | 2006-11-10 | 2008-05-15 | Oerlikon Textile Gmbh & Co. Kg | Process and device for melt-spinning and cooling synthetic filaments |
| JP6069019B2 (en) * | 2013-02-19 | 2017-01-25 | Ｔｍｔマシナリー株式会社 | Yarn cooling device |
| CN104805513B (en) * | 2015-04-24 | 2017-02-01 | 光山县群力化纤有限公司 | Production method of polyamide-6 fiber |
Family Cites Families (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE747592C (en) * | ||||
| GB901398A (en) * | 1960-05-19 | 1962-07-18 | British Nylon Spinners Ltd | Improvements in or relating to melt-spinning synthetic polymer filaments |
| GB1088240A (en) * | 1965-08-20 | 1967-10-25 | Ici Ltd | Melt spinning of fibre-forming polymers |
| CH468482A (en) * | 1967-05-01 | 1969-02-15 | Inventa Ag | Device for preventing air turbulence in the spinning shaft |
| US3497586A (en) * | 1968-01-04 | 1970-02-24 | Fmc Corp | Process and apparatus for melt spinning thermoplastic yarn |
| GB1220424A (en) * | 1968-03-21 | 1971-01-27 | Toray Industries | Method and apparatus for melt-spinning synthetic fibres |
| SU461175A1 (en) * | 1970-11-24 | 1975-02-25 | Предприятие П/Я А-3342 | Device for cooling synthetic fiber |
| US3672801A (en) * | 1971-01-13 | 1972-06-27 | Du Pont | Spinning quench chamber having a conical flow director |
| SU492600A1 (en) * | 1974-07-23 | 1975-11-25 | Всесоюзный Научно-Исследовательский Институт Машин Для Производства Синтетических Волокон | Apparatus for cooling melt recovered fibers |
| US4134882A (en) * | 1976-06-11 | 1979-01-16 | E. I. Du Pont De Nemours And Company | Poly(ethylene terephthalate)filaments |
| US4332764A (en) * | 1980-10-21 | 1982-06-01 | Fiber Industries, Inc. | Methods for producing melt-spun filaments |
| DE3406347A1 (en) * | 1983-02-25 | 1984-10-11 | Barmag Barmer Maschinenfabrik Ag, 5630 Remscheid | Spinning apparatus for chemical fibres with a blowing box and spinning shaft |
| JPS59168112A (en) * | 1983-03-14 | 1984-09-21 | Kuraray Co Ltd | Melt spinning of synthetic fiber |
| JPS60134011A (en) * | 1983-12-22 | 1985-07-17 | Toray Ind Inc | Method and apparatus for melt-spinning of thermoplastic polymer |
| DE3414602C2 (en) * | 1984-04-18 | 1991-10-24 | Franz 5305 Alfter Fourné | Thread cooling shaft for cooling and solidifying melt-spun threads and bundles of threads |
| US4687610A (en) * | 1986-04-30 | 1987-08-18 | E. I. Du Pont De Neumours And Company | Low crystallinity polyester yarn produced at ultra high spinning speeds |
-
1992
- 1992-07-21 WO PCT/DE1992/000590 patent/WO1993002233A1/en active IP Right Grant
- 1992-07-21 EP EP92915061A patent/EP0549763B1/en not_active Expired - Lifetime
- 1992-07-21 KR KR1019930700711A patent/KR950013478B1/en not_active IP Right Cessation
- 1992-07-21 US US08/030,289 patent/US5433591A/en not_active Expired - Fee Related
- 1992-07-21 DE DE59201340T patent/DE59201340D1/en not_active Expired - Fee Related
- 1992-07-23 CN CN92109768A patent/CN1028777C/en not_active Expired - Fee Related
- 1992-07-27 TW TW081105924A patent/TW240254B/zh active
Also Published As
| Publication number | Publication date |
|---|---|
| US5433591A (en) | 1995-07-18 |
| EP0549763A1 (en) | 1993-07-07 |
| TW240254B (en) | 1995-02-11 |
| CN1074250A (en) | 1993-07-14 |
| KR930702563A (en) | 1993-09-09 |
| WO1993002233A1 (en) | 1993-02-04 |
| KR950013478B1 (en) | 1995-11-08 |
| CN1028777C (en) | 1995-06-07 |
| DE59201340D1 (en) | 1995-03-16 |
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