WO2005113872A1 - Device on a spinning machine for drawing and compacting a staple fiber sliver - Google Patents
Device on a spinning machine for drawing and compacting a staple fiber sliver Download PDFInfo
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- WO2005113872A1 WO2005113872A1 PCT/EP2005/001856 EP2005001856W WO2005113872A1 WO 2005113872 A1 WO2005113872 A1 WO 2005113872A1 EP 2005001856 W EP2005001856 W EP 2005001856W WO 2005113872 A1 WO2005113872 A1 WO 2005113872A1
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- WIPO (PCT)
- Prior art keywords
- staple fiber
- vacuum channel
- traversing
- drafting system
- compacting
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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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Classifications
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01H—SPINNING OR TWISTING
- D01H5/00—Drafting machines or arrangements ; Threading of roving into drafting machine
- D01H5/18—Drafting machines or arrangements without fallers or like pinned bars
- D01H5/70—Constructional features of drafting elements
- D01H5/72—Fibre-condensing guides
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01H—SPINNING OR TWISTING
- D01H5/00—Drafting machines or arrangements ; Threading of roving into drafting machine
- D01H5/18—Drafting machines or arrangements without fallers or like pinned bars
- D01H5/26—Drafting machines or arrangements without fallers or like pinned bars in which fibres are controlled by one or more endless aprons
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01H—SPINNING OR TWISTING
- D01H5/00—Drafting machines or arrangements ; Threading of roving into drafting machine
- D01H5/18—Drafting machines or arrangements without fallers or like pinned bars
- D01H5/58—Arrangements for traversing drafting elements
Definitions
- the invention relates to a device on a spinning machine for stretching and compacting a staple fiber bandage, with a drafting system containing an upper apron with an upper apron cage, with a compression zone, with an air-permeable transport means transporting the staple fiber bandage through the compression zone, with one associated with the compression zone and covered by the means of transport a vacuum channel arranged in the suction slot and with a traversing device assigned to the drafting system and which changes the staple fiber structure transversely to its transport direction and to whose traversing drive the vacuum channel is also connected.
- the exit roller pair of a drafting system defines an exit nip line up to which the spin twist imparted to the spun thread runs back.
- the means for compacting often contain a suction slot, with the aid of which the staple fiber dressing is to be pneumatically bundled. Since the staple fiber dressing, as is known, is usually changed in the drafting system transversely to its transport direction, so that the straps and the roller covers do not wear out too early, there is a risk that the shimmering staple fiber structure will not be caught by the suction slot.
- a comparable device has become known from DE 100 51 413 A1, in which the vacuum channel is also oscillated together with the staple fiber structure.
- the lower roller of the pair of output rollers is designed as a suction roller, on the upper roller of which the compression takes place between an output pressure roller of the drafting system and a subsequent swirl stop roller.
- a device is known from German patent 882 066, in which the compression of a staple fiber structure is carried out in the main draft zone of a drafting system.
- a bottom strap is made air-permeable in a central part and connected to a suction slot.
- a traversing device is not disclosed for this device.
- the invention is based on the object of designing a device of the type mentioned at the outset as little complexity as possible.
- the object is achieved in that the top apron of the drafting system is the means of transport and that the vacuum channel in the top apron cage is slidably guided.
- the staple fiber structure is compacted in the main drafting zone of the drafting system, which on the one hand leads to a shortened construction and on the other hand requires fewer components.
- the top apron designed to be air-permeable according to the invention now contains an additional function which serves to compress the staple fiber association.
- the top strap cage belonging to the top strap also has an additional function in that it not only serves to guide the top strap, but also as a holder and sliding guide for the suction channel.
- Double-apron drafting units are customary, and there is also a lower apron table with lower aprons, then the staple fiber bandage is guided in the compression zone between the air-permeable transport means designed as an upper apron and the lower apron.
- the top strap itself does not need to oscillate, since the vacuum channel containing the suction slot is guided in synchronism with the oscillation movement of the staple fiber structure.
- a common upper apron cage and a common vacuum channel are advantageously provided for the top aprons of two adjacent spinning stations, in adaptation to the printing roller twins already customary without the devices according to the invention.
- the vacuum channel is expediently attached on both sides of the top apron cage to a traversing rod of the traversing drive.
- FIG. 1 shows a partially sectioned side view through a drafting system with an integrated compression zone
- Figure 2 is a view in the direction of arrow II of Figure 1 on the top apron cage, the vacuum channel and the traversing device.
- the device according to FIGS. 1 and 2 is part of a spinning machine, in particular a ring spinning machine, and serves to stretch and compress a staple fiber structure 1.
- the drafting arrangement 2 shown can be provided for one spinning station or also jointly for two adjacent spinning stations 3, 4. In a known manner, it contains an input roller pair (not shown), a middle apron roller pair 5,6 and an output roller pair 7,8 and is consequently designed as a three-cylinder drafting system.
- the lower rollers 5 and 7 belonging to the roller pairs 5, 6 and 7, 8 are preferably connected to driven roller strands which run in the machine longitudinal direction.
- the pressure rollers 6 and 8 assigned to the lower rollers 5 and 7, on the other hand, are each assigned to a spinning unit 3, 4 and, if appropriate, connected to the adjacent pressure rollers, as provided in FIG. 2, to form so-called pressure roller twins.
- the apron roller pair 5.6 leads in a known A lower apron 9 and an upper apron 10, wherein a so-called guide table 11 and a tensioning element 12 are assigned to the lower apron 9 and an upper apron cage 13 is assigned to the upper apron 10.
- the pressure rollers 6 and 8 are held in a known manner on a load carrier 14 and pressed resiliently onto the associated lower rollers 5 and 7.
- a staple fiber bandage 1 designed as a sliver or roving is drawn in the transport direction A to the desired fineness in a known manner.
- the draft zone of the drafting unit 2 is then ended at an output clamping line 15 of the output roller pair 7, 8. From here, the resulting thread 16 receives its spin twist, whereby it is fed in the direction of delivery B to a swirl element, not shown, for example an annular spindle.
- the aforementioned spinning triangle is formed on the thread 16, which has a disadvantageous effect on the thread quality, since it has edge fibers which are only imperfectly screwed into the spun thread 16 and thus practically do not contribute to its strength.
- the drafting unit 2 contains a so-called compression zone 17, in which the staple fiber structure 1 is bundled or compacted by laterally combining its edge fibers.
- the base of the spinning triangle is reduced at the starting clamping line 15, so that the resulting thread 16 becomes more tear-resistant, more uniform and less hairy.
- the staple fiber bundle 1 to be compressed is transported in the main draft zone 18 of the drafting unit 2 through the compression zone 17 using an air-permeable transport means 19.
- the transport means 19 is the already mentioned upper strap 10, which can be designed as a fabric band or as a rubber strap perforated like a pearl cord.
- the transport means 19 slides over the outer contour of the upper apron cage 13 designed as a hollow profile, inside which a vacuum channel 20 is arranged in a manner to be described in more detail below.
- the Vacuum channel 20 per upper apron 10 has a suction slot 22 which extends essentially in the direction of transport A and whose width corresponds approximately to the width of the staple fiber structure 1 in the compressed state.
- the suction slot 22 is covered by the transport means 19.
- the suction slot 22 can be straight or optionally inclined up to about 7 ° to the transport direction A and possibly tapered. Its length takes up about 40 to 60% of the length of the main warping area 18.
- An inlet compressor 23 arranged upstream of the drafting system 2 is connected to a traversing device 24 which shifts the inlet compressor 23 and thus also the staple fiber assembly 1 transversely to the transport direction A over a certain traversing stroke of approximately 6 to 10 mm in accordance with the arrow directions C and D.
- This traversing movement primarily serves the purpose of preventing the top aprons 13 of the drafting unit 2 and the pressure rollers 8 of the pair of output rollers 7, 8 from wearing out too quickly.
- the traversing movement is achieved by a traversing rod 25 connected to a traversing drive, not shown, which is connected directly to the inlet compressor 23 and which is coupled to the vacuum duct 20 via driving rods 26 and 27 in a manner to be described in more detail below.
- the suction slots 22 can also change according to the traversing directions C and D. This counteracts the risk that the staple fiber dressing 1 will not arrive exactly where the suction slot 22 of the compression zone 17 begins. The reception of the fibers should always take place at the same point in the suction slot 22, because it can only be assumed that all the fibers are compressed in the same way. This is now possible because the vacuum channel 20 also participates in the traversing movement of the traversing device 24.
- the vacuum channel 20 is slidably guided in the upper apron cage 13.
- the vacuum channel 20 is not only designed as an oscillating suction element, but the upper apron cage 13 becomes both the holder of the vacuum channel 20 and the carrier of the air-permeable transport means 19.
- the oscillating vacuum channel 20 is arranged in a sliding bearing and can be on both sides of the Upper apron cage 13 are fastened to the traversing rod 25 by means of the driving rods 26 and 27.
- a common top apron cage 13 and a common vacuum channel 20 are used for the top aprons 10 of two adjacent spinning positions 3 and 4. It is advantageous if the upper contour of the guide table 11 and thus also the compression zone 17 are designed to be slightly arched and thus penetrate the connecting plane between the apron roller pair 5,6 and the output roller pair 7,8 upwards and downwards.
- the top apron 10 can be structured in addition to its air permeability on its surface, for example with an arrow structure which supports the compression of the staple fiber dressing 1.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Spinning Or Twisting Of Yarns (AREA)
Abstract
Description
Vorrichtung an einer Spinnmaschine zum Verstrecken und Verdichten eines StapelfaserverbandesDevice on a spinning machine for stretching and compacting a staple fiber bandage
Die Erfindung betrifft eine Vorrichtung an einer Spinnmaschine zum Verstrecken und Verdichten eines Stapelfaserverbandes, mit einem ein Oberriemchen mit Oberriemchenkäfig enthaltenden Streckwerk, mit einer Verdichtungszone, mit einem den Stapelfaserverband durch die Verdichtungszone transportierenden luftdurchlässigen Transportmittel, mit einem der Verdichtungszone zugeordneten, vom Transportmittel abgedeckten, an einem Unterdruckkanal angeordneten Saugschlitz sowie mit einer dem Streckwerk zugeordneten, den Stapelfaserverband quer zur seiner Transportrichtung changierenden Changiereinrichtung, an deren Changierantrieb auch der Unterdruckkanal angeschlossen ist.The invention relates to a device on a spinning machine for stretching and compacting a staple fiber bandage, with a drafting system containing an upper apron with an upper apron cage, with a compression zone, with an air-permeable transport means transporting the staple fiber bandage through the compression zone, with one associated with the compression zone and covered by the means of transport a vacuum channel arranged in the suction slot and with a traversing device assigned to the drafting system and which changes the staple fiber structure transversely to its transport direction and to whose traversing drive the vacuum channel is also connected.
Das Ausgangswalzenpaar eines Streckwerks definiert eine Ausgangsklemmlinie, bis zu welcher der dem ersponnenen Faden erteilte Spinndrall zurückläuft. Dabei entsteht an der Ausgangsklemmlinie ein so genanntes Spinndreieck, dessen Basis breiter ist als der Durchmesser des ersponnenen Fadens und welches üblicherweise Randfasern enthält, die nicht ordnungsgemäß in den entstehenden Faden eingebunden werden und somit wenig oder nichts zur Festigkeit des Fadens beitragen. Zur Erhöhung der Qualität des Fadens ist man daher bestrebt, die Basis des Spinndreiecks möglichst klein zu halten. Aus diesem Grunde sind bei vielen Streckwerken Mittel zum Verdichten des Stapelfaserverbandes vor der Drehungserteilung vorgesehen.The exit roller pair of a drafting system defines an exit nip line up to which the spin twist imparted to the spun thread runs back. This creates a so-called spinning triangle at the starting clamping line, the base of which is wider than the diameter of the spun thread and which usually contains edge fibers which are not properly incorporated into the thread being formed and thus contribute little or nothing to the strength of the thread. In order to increase the quality of the thread, efforts are therefore made to keep the base of the spinning triangle as small as possible. For this reason, means for compacting the staple fiber structure are provided in many drafting systems before the rotation is given.
Die Mittel zum Verdichten enthalten häufig einen Saugschlitz, mit dessen Hilfe der Stapelfaserverband pneumatisch gebündelt werden soll. Da der Stapelfaserverband, wie bekannt, im Streckwerk üblicherweise quer zu seiner Transportrichtung changiert wird, damit die Riemchen und die Walzenbezüge nicht zu zeitig verschleißen, besteht die Gefahr, dass der changierende Stapelfaserverband nicht vom Saugschlitz erfasst wird.The means for compacting often contain a suction slot, with the aid of which the staple fiber dressing is to be pneumatically bundled. Since the staple fiber dressing, as is known, is usually changed in the drafting system transversely to its transport direction, so that the straps and the roller covers do not wear out too early, there is a risk that the shimmering staple fiber structure will not be caught by the suction slot.
Bei einer bekannten Vorrichtung der eingangs genannten Art gemäß der DE 100 33 188 A1 , bei welcher das Verdichten des Stapelfaserverbandes allerdings erst in einer dem Streckwerk nachgeordneten Verdichtungszone stattfindet, ist nun vorgesehen, dass der Unterdruckkanal an einen mit der Changiereinrichtung synchron laufenden Changierantrieb angeschlossen ist. Dadurch wird erreicht, dass trotz changierenden Stapelfaserverbandes die Fasern immer zu der gleichen Anfangsstelle des Saugschlitzes gelangen.In a known device of the type mentioned at the outset according to DE 100 33 188 A1, in which the compression of the staple fiber structure only takes place in a compression zone downstream of the drafting device, it is now provided that the vacuum channel is connected to a traversing drive running synchronously with the traversing device. This ensures that despite the changing staple fiber structure, the fibers always reach the same starting point of the suction slot.
Eine vergleichbare Vorrichtung ist durch die DE 100 51 413 A1 bekannt geworden, bei welcher ebenfalls der Unterdruckkanal zusammen mit dem Stapelfaserverband changiert wird. Im vorliegenden Falle ist die Unterwalze des Ausgangswalzenpaares als Saugwalze ausgebildet, an deren Oberwalze zwischen einer Ausgangsdruckwalze des Streckwerks und einer nachfolgenden Drallstoppwalze die Verdichtung stattfindet.A comparable device has become known from DE 100 51 413 A1, in which the vacuum channel is also oscillated together with the staple fiber structure. In the present case, the lower roller of the pair of output rollers is designed as a suction roller, on the upper roller of which the compression takes place between an output pressure roller of the drafting system and a subsequent swirl stop roller.
Durch das deutsche Patent 882 066 ist eine Vorrichtung bekannt geworden, bei welcher das Verdichten eines Stapelfaserverbandes im Hauptverzugsfeld eines Streckwerks durchgeführt wird. Hierfür ist ein Unterriemchen in einem mittleren Teil luftdurchlässig ausgeführt und an einen Saugschlitz angeschlossen. Eine Changiereinrichtung ist für diese Vorrichtung nicht offenbart.A device is known from German patent 882 066, in which the compression of a staple fiber structure is carried out in the main draft zone of a drafting system. For this purpose, a bottom strap is made air-permeable in a central part and connected to a suction slot. A traversing device is not disclosed for this device.
Der Erfindung liegt die Aufgabe zu Grunde, eine Vorrichtung der eingangs genannten Art so wenig aufwendig wie möglich zu gestalten.The invention is based on the object of designing a device of the type mentioned at the outset as little complexity as possible.
Die Aufgabe wird dadurch gelöst, dass das Oberriemchen des Streckwerks das Transportmittel ist und dass der Unterdruckkanal im Oberriemchenkäfig gleitend geführt ist.The object is achieved in that the top apron of the drafting system is the means of transport and that the vacuum channel in the top apron cage is slidably guided.
Abweichend vom eingangs genannten Stand der Technik, findet bei der erfindungsgemäßen Vorrichtung das Verdichten des Stapelfaserverbandes im Hauptverzugsfeld des Streckwerks statt, was zum einen zu einer verkürzten Bauweise führt und zum anderen weniger Bauteile benötigt. Das erfindungsgemäß luftdurchlässig ausgeführte Oberriemchen enthält neben seiner üblichen Aufgabe als Führungselement eines Stapelfaserverbandes jetzt eine Zusatzfunktion, die dem Verdichten des Stapelfaserverbandes dient. Auch der dem Oberriemchen zugehörige Oberriemchenkäfig erhält eine Zusatzfunktion, indem er nicht nur dem Führen des Oberriemchens, sondern auch als Halterung und Gleitführung des Saugkanals dient. Wenn, wie bei Doppelriemchenstreckwerken üblich, auch ein Unterriemchentisch mit Unterriemchen vorhanden ist, dann ist der Stapelfaserverband in der Verdichtungszone zwischen dem als Oberriemchen ausgebildeten luftdurchlässigen Transportmittel und dem Unterriemchen geführt. Das Oberriemchen selbst braucht nicht zu changieren, da ja der den Saugschlitz enthaltende Unterdruckkanal synchron zur Changierbewegung des Stapelfaserverbandes geführt ist.In contrast to the prior art mentioned at the outset, in the device according to the invention the staple fiber structure is compacted in the main drafting zone of the drafting system, which on the one hand leads to a shortened construction and on the other hand requires fewer components. In addition to its usual function as a guide element of a staple fiber association, the top apron designed to be air-permeable according to the invention now contains an additional function which serves to compress the staple fiber association. The top strap cage belonging to the top strap also has an additional function in that it not only serves to guide the top strap, but also as a holder and sliding guide for the suction channel. If, as with Double-apron drafting units are customary, and there is also a lower apron table with lower aprons, then the staple fiber bandage is guided in the compression zone between the air-permeable transport means designed as an upper apron and the lower apron. The top strap itself does not need to oscillate, since the vacuum channel containing the suction slot is guided in synchronism with the oscillation movement of the staple fiber structure.
Vorteilhaft ist für die Oberriemchen zweier benachbarter Spinnstellen ein gemeinsamer Oberriemchenkäfig und ein gemeinsamer Unterdruckkanal vorgesehen, in Anpassung an die bisher bereits üblichen Druckwalzenzwillinge ohne die erfindungsgemäßen Einrichtungen. Der Unterdruckkanal ist zweckmäßig beidseits der Oberriemchenkäfigs an einer Changierstange des Changierantriebes befestigt.A common upper apron cage and a common vacuum channel are advantageously provided for the top aprons of two adjacent spinning stations, in adaptation to the printing roller twins already customary without the devices according to the invention. The vacuum channel is expediently attached on both sides of the top apron cage to a traversing rod of the traversing drive.
Weitere Vorteile und Merkmale der Erfindung ergeben sich aus der nachfolgenden Beschreibung eines Ausführungsbeispiels.Further advantages and features of the invention result from the following description of an exemplary embodiment.
Es zeigen:Show it:
Figur 1 eine teilweise geschnittene Seitenansicht durch ein Streckwerk mit integrierter Verdichtungszone,FIG. 1 shows a partially sectioned side view through a drafting system with an integrated compression zone,
Figur 2 eine Ansicht in Richtung des Pfeiles II der Figur 1 auf den Oberriemchenkäfig, den Unterdruckkanal und die Changiereinrichtung.Figure 2 is a view in the direction of arrow II of Figure 1 on the top apron cage, the vacuum channel and the traversing device.
Die Vorrichtung nach Figuren 1 und 2 ist Bestanteil einer Spinnmaschine, insbesondere einer Ringspinnmaschine, und dient dem Verstrecken und Verdichten eines Stapelfaserverbandes 1.The device according to FIGS. 1 and 2 is part of a spinning machine, in particular a ring spinning machine, and serves to stretch and compress a staple fiber structure 1.
Das dargestellte Streckwerk 2 kann jeweils für eine Spinnstelle oder auch gemeinsam für zwei benachbarte Spinnstellen 3,4 vorgesehen sein. Es enthält in bekannter Weise ein nicht dargestelltes Eingangswalzenpaar, ein mittleres Riemchenwalzenpaar 5,6 sowie ein Ausgangswalzenpaar 7,8 und ist demzufolge als Drei-Zylinder-Streckwerk ausgebildet. Die den Walzenpaaren 5,6 und 7,8 zugehörigen Unterwalzen 5 und 7 sind vorzugsweise mit angetriebenen Walzensträngen verbunden, die in Maschinenlängsrichtung durchlaufen. Die den Unterwalzen 5 und 7 zugeordneten Druckwalzen 6 und 8 sind hingegen jeweils einer Spinnstelle 3,4 zugeordnet und gegebenenfalls mit den benachbarten Druckwalzen, wie in Figur 2 vorgesehen, zu so genannten Druckwalzenzwillingen verbunden. Das Riemchenwalzenpaar 5,6 führt in bekannter Weise ein Unterriemchen 9 und ein Oberriemchen 10, wobei dem Unterriemchen 9 ein so genannter Führungstisch 11 und ein Spannelement 12 und dem Oberriemchen 10 ein Oberriemchenkäfig 13 zugeordnet sind. Die Druckwalzen 6 und 8 sind in bekannter Weise an einem Belastungsträger 14 gehalten und federnd an die zugehörigen Unterwalzen 5 und 7 angedrückt.The drafting arrangement 2 shown can be provided for one spinning station or also jointly for two adjacent spinning stations 3, 4. In a known manner, it contains an input roller pair (not shown), a middle apron roller pair 5,6 and an output roller pair 7,8 and is consequently designed as a three-cylinder drafting system. The lower rollers 5 and 7 belonging to the roller pairs 5, 6 and 7, 8 are preferably connected to driven roller strands which run in the machine longitudinal direction. The pressure rollers 6 and 8 assigned to the lower rollers 5 and 7, on the other hand, are each assigned to a spinning unit 3, 4 and, if appropriate, connected to the adjacent pressure rollers, as provided in FIG. 2, to form so-called pressure roller twins. The apron roller pair 5.6 leads in a known A lower apron 9 and an upper apron 10, wherein a so-called guide table 11 and a tensioning element 12 are assigned to the lower apron 9 and an upper apron cage 13 is assigned to the upper apron 10. The pressure rollers 6 and 8 are held in a known manner on a load carrier 14 and pressed resiliently onto the associated lower rollers 5 and 7.
Im Streckwerk 2, welches als Doppelriemchen-Streckwerk ausgebildet ist, wird in bekannter Weise ein als Faserband oder Vorgarn ausgebildeter Stapelfaserverband 1 in Transportrichtung A bis zur gewünschten Feinheit verzogen. An einer Ausgangsklemmlinie 15 des Ausgangswalzenpaares 7,8 ist dann die Verzugszone des Streckwerks 2 beendet. Ab hier erhält der entstehende Faden 16 seinen Spinndrall, wobei er in Lieferrichtung B einem nicht dargestellten Drallorgan, beispielsweise einer Ringspindel, zugeführt wird.In the drafting unit 2, which is designed as a double apron drafting unit, a staple fiber bandage 1 designed as a sliver or roving is drawn in the transport direction A to the desired fineness in a known manner. The draft zone of the drafting unit 2 is then ended at an output clamping line 15 of the output roller pair 7, 8. From here, the resulting thread 16 receives its spin twist, whereby it is fed in the direction of delivery B to a swirl element, not shown, for example an annular spindle.
An der Ausgangsklemmlinie 15 entsteht am Faden 16 das erwähnte Spinndreieck, welches sich nachteilig hinsichtlich der Fadenqualität auswirkt, da es Randfasern besitzt, die nur unvollkommen in den ersponnenen Faden 16 mit eingedreht werden und somit zu seiner Festigkeit praktisch nicht beitragen.At the output clamping line 15, the aforementioned spinning triangle is formed on the thread 16, which has a disadvantageous effect on the thread quality, since it has edge fibers which are only imperfectly screwed into the spun thread 16 and thus practically do not contribute to its strength.
Um diesem Nachteil abzuhelfen, enthält das Streckwerk 2 eine so genannte Verdichtungszone 17, in welcher der Stapelfaserverband 1 durch seitliches Zusammenfassen seiner Randfasern gebündelt oder verdichtet wird. Dadurch reduziert sich an der Ausgangsklemmlinie 15 die Basis des Spinndreiecks, so dass der entstehende Faden 16 reißfester, gleichmäßiger und weniger haarig wird.In order to remedy this disadvantage, the drafting unit 2 contains a so-called compression zone 17, in which the staple fiber structure 1 is bundled or compacted by laterally combining its edge fibers. As a result, the base of the spinning triangle is reduced at the starting clamping line 15, so that the resulting thread 16 becomes more tear-resistant, more uniform and less hairy.
Der zu verdichtende Stapelfaserverband 1 wird im Hauptverzugsfeld 18 des Streckwerks 2 mit einem luftdurchlässigen Transportmittel 19 durch die Verdichtungszone 17 transportiert. Das Transportmittel 19 ist im vorliegenden Falle das bereits erwähnte Oberriemchen 10, welches als Gewebeband oder auch als perlschnurartig perforiertes Gummiriemchen ausgebildet sein kann. Das Transportmittel 19 gleitet dabei über die Außenkontur des als Hohlprofil ausgebildeten Oberriemchenkäfigs 13, in dessen Innerem in nachfolgend noch genauer zu beschreibender Weise ein Unterdruckkanal 20 angeordnet ist.The staple fiber bundle 1 to be compressed is transported in the main draft zone 18 of the drafting unit 2 through the compression zone 17 using an air-permeable transport means 19. In the present case, the transport means 19 is the already mentioned upper strap 10, which can be designed as a fabric band or as a rubber strap perforated like a pearl cord. The transport means 19 slides over the outer contour of the upper apron cage 13 designed as a hollow profile, inside which a vacuum channel 20 is arranged in a manner to be described in more detail below.
Der sich über beide benachbarte Spinnstellen 3 und 4 erstreckende Unterdruckkanal 20 weist einen Unterdruckanschluss 21 auf, der mit einer nicht dargestellten Unterdruckquelle verbunden ist. Im Bereich einer der Verdichtungszone 17 zugeordneten Gleitfläche besitzt der Unterdruckkanal 20 pro Oberriemchen 10 einen sich im Wesentlichen in Transportrichtung A erstreckenden Saugschlitz 22, dessen Breite etwa der Breite des Stapelfaserverbandes 1 im verdichteten Zustand entspricht. Der Saugschlitz 22 wird vom Transportmittel 19 abgedeckt. Der Saugschlitz 22 kann gerade oder gegebenenfalls bis zu etwa 7° zur Transportrichtung A geneigt und eventuell sich verjüngend ausgebildet sein. Seine Länge nimmt etwa 40 bis 60% der Länge des Hauptverzugsfeldes 18 ein.The vacuum channel 20, which extends over both adjacent spinning positions 3 and 4, has a vacuum connection 21 which is connected to a vacuum source, not shown. In the area of a sliding surface assigned to the compression zone 17 the Vacuum channel 20 per upper apron 10 has a suction slot 22 which extends essentially in the direction of transport A and whose width corresponds approximately to the width of the staple fiber structure 1 in the compressed state. The suction slot 22 is covered by the transport means 19. The suction slot 22 can be straight or optionally inclined up to about 7 ° to the transport direction A and possibly tapered. Its length takes up about 40 to 60% of the length of the main warping area 18.
Ein dem Streckwerk 2 vorgeordneter Einlaufverdichter 23 ist an eine Changiereinrichtung 24 angeschlossen, welche den Einlaufverdichter 23 und somit auch den Stapelfaserverband 1 quer zur Transportrichtung A über einen gewissen Changierhub von etwa 6 bis 10 mm entsprechend den Pfeilrichtungen C und D changiert. Diese Changierbewegung dient vorrangig dem Zweck, zu verhindern, dass sich die Oberriemchen 13 des Streckwerks 2 sowie die Druckwalzen 8 des Ausgangswalzenpaares 7,8 zu schnell abnutzen. Die Changierbewegung wird durch eine an einen nicht dargestellten Changierantrieb angeschlossene Changierstange 25 erreicht, welche direkt mit dem Einlaufverdichter 23 verbunden ist und welche über Mitnehmerstangen 26 und 27 in noch näher zu beschreibender weise mit dem Unterdruckkanal 20 gekoppelt ist. Somit können auch die Saugschlitze 22 entsprechend den Changierrichtungen C und D changieren. Damit wird der Gefahr entgegengewirkt, dass der Stapelfaserverband 1 nicht genau dort eintrifft, wo der Saugschlitz 22 der Verdichtungszone 17 beginnt. Der Empfang der Fasern soll immer an der gleichen Stelle des Saugschlitzes 22 stattfindet, weil man nur dann davon ausgehen kann, dass alle Fasern in gleicher Weise verdichtet werden. Dies ist nun dadurch möglich, dass auch der Unterdruckkanal 20 an der Changierbewegung der Changiereinrichtung 24 teilnimmt.An inlet compressor 23 arranged upstream of the drafting system 2 is connected to a traversing device 24 which shifts the inlet compressor 23 and thus also the staple fiber assembly 1 transversely to the transport direction A over a certain traversing stroke of approximately 6 to 10 mm in accordance with the arrow directions C and D. This traversing movement primarily serves the purpose of preventing the top aprons 13 of the drafting unit 2 and the pressure rollers 8 of the pair of output rollers 7, 8 from wearing out too quickly. The traversing movement is achieved by a traversing rod 25 connected to a traversing drive, not shown, which is connected directly to the inlet compressor 23 and which is coupled to the vacuum duct 20 via driving rods 26 and 27 in a manner to be described in more detail below. Thus, the suction slots 22 can also change according to the traversing directions C and D. This counteracts the risk that the staple fiber dressing 1 will not arrive exactly where the suction slot 22 of the compression zone 17 begins. The reception of the fibers should always take place at the same point in the suction slot 22, because it can only be assumed that all the fibers are compressed in the same way. This is now possible because the vacuum channel 20 also participates in the traversing movement of the traversing device 24.
Gemäß einem weiteren Merkmal der Erfindung ist nun vorgesehen, dass der Unterdruckkanal 20 im Oberriemchenkäfig 13 gleitend geführt ist. Dadurch ist der Unterdruckkanal 20 nicht nur als changierendes Saugelement ausgebildet, sondern der Oberriemchenkäfig 13 wird sowohl zum Halter des Unterdruckkanals 20 als auch zum Träger des luftdurchlässigen Transportmittels 19. In dem als Halter ausgebildeten Oberriemchenkäfig 13 ist der changierende Unterdruckkanal 20 gleitgelagert angeordnet und kann beidseits des Oberriemchenkäfigs 13 mittels der Mitnehmerstangen 26 und 27 an der Changierstange 25 befestigt werden.According to a further feature of the invention, it is now provided that the vacuum channel 20 is slidably guided in the upper apron cage 13. As a result, the vacuum channel 20 is not only designed as an oscillating suction element, but the upper apron cage 13 becomes both the holder of the vacuum channel 20 and the carrier of the air-permeable transport means 19. In the upper apron cage 13 designed as a holder, the oscillating vacuum channel 20 is arranged in a sliding bearing and can be on both sides of the Upper apron cage 13 are fastened to the traversing rod 25 by means of the driving rods 26 and 27.
Wie ersichtlich, wird für die Oberriemchen 10 zweier benachbarter Spinnstellen 3 und 4 ein gemeinsamer Oberriemchenkäfig 13 und ein gemeinsamer Unterdruckkanal 20 verwendet. Es ist vorteilhaft, wenn die obere Kontur des Führungstisches 11 und somit auch die Verdichtungszone 17 leicht gewölbt ausgestaltet ist und somit die Verbindungsebene zwischen dem Riemchenwalzenpaar 5,6 und dem Ausgangswalzenpaar 7,8 nach oben und unten durchdringt.As can be seen, a common top apron cage 13 and a common vacuum channel 20 are used for the top aprons 10 of two adjacent spinning positions 3 and 4. It is advantageous if the upper contour of the guide table 11 and thus also the compression zone 17 are designed to be slightly arched and thus penetrate the connecting plane between the apron roller pair 5,6 and the output roller pair 7,8 upwards and downwards.
In nicht dargestellter Weise kann das Oberriemchen 10 zusätzlich zu seiner Luftdurchlässigkeit an seiner Oberfläche strukturiert sein, beispielsweise mit einer Pfeilstruktur, welche das Verdichten der Stapelfaserverbandes 1 unterstützt. In a manner not shown, the top apron 10 can be structured in addition to its air permeability on its surface, for example with an arrow structure which supports the compression of the staple fiber dressing 1.
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102004026519.4 | 2004-05-21 | ||
| DE200410026519 DE102004026519A1 (en) | 2004-05-21 | 2004-05-21 | Device on a spinning machine for drawing and compacting a staple fiber strand |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2005113872A1 true WO2005113872A1 (en) | 2005-12-01 |
Family
ID=34961202
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2005/001856 Ceased WO2005113872A1 (en) | 2004-05-21 | 2005-02-23 | Device on a spinning machine for drawing and compacting a staple fiber sliver |
Country Status (2)
| Country | Link |
|---|---|
| DE (1) | DE102004026519A1 (en) |
| WO (1) | WO2005113872A1 (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102007013233A1 (en) * | 2007-03-15 | 2008-09-18 | Oerlikon Textile Gmbh & Co. Kg | Drafting equipment, has compression device including suction shoe and compressive strip tile, which perforates and winds around upper output roller, where shoe faces middle roller pair |
| CN101235562B (en) * | 2008-03-03 | 2010-06-02 | 上海市毛麻纺织科学技术研究所 | Connecting rod synchronous traverse collector device |
| CN102345190A (en) * | 2010-07-30 | 2012-02-08 | 罗托卡夫特公司 | Drafting system having tilted dominant drafting area |
| CN102586964A (en) * | 2010-12-20 | 2012-07-18 | 株式会社丰田自动织机 | Drafting device of spinning machine |
| CN107794608A (en) * | 2016-08-31 | 2018-03-13 | 株式会社丰田自动织机 | The fiber bundling apparatus of spinning machine |
| WO2019115346A1 (en) * | 2017-12-15 | 2019-06-20 | Maschinenfabrik Rieter Ag | Drafting arrangement for a spinning machine |
| EP3604646A1 (en) * | 2018-08-03 | 2020-02-05 | Saurer Spinning Solutions GmbH & Co. KG | Drawing frame unit and drawing frame for a spinning machine |
| US11879186B2 (en) | 2018-05-24 | 2024-01-23 | Saurer Spinning Solutions Gmbh & Co. Kg | Drafting system and drafting system unit for a spinning machine |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102007031993A1 (en) * | 2007-07-09 | 2009-01-15 | Oerlikon Textile Gmbh & Co. Kg | Sliver drawing unit with a condenser, at a spinning machine, has a perforated belt with a linear perforation track to reinforce the suction action from suction shoe openings on the woven permeable belts |
| DE102015112662A1 (en) * | 2015-07-31 | 2017-02-02 | Maschinenfabrik Rieter Ag | Compressor unit for a drafting system of a textile machine |
| DE102015013571A1 (en) * | 2015-10-20 | 2017-04-20 | Saurer Germany Gmbh & Co. Kg | Double apron drafting system, guide means and method for compacting a fiber composite |
| DE102020117391A1 (en) | 2020-07-01 | 2022-01-05 | Maschinenfabrik Rieter Ag | Spinning machine and swivel device for a guide table of a spinning machine |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3145208A1 (en) * | 1980-11-14 | 1982-06-09 | Murata Kikai K.K., Kyoto | "DRAWING PROCESS AND DRAWER FOR A SPINNING MACHINE" |
| DE10033188A1 (en) * | 2000-07-07 | 2002-01-17 | Stahlecker Fritz | Assembly to draw and condense a sliver for spinning has a coupling to link the underpressure channel at the condensing station with the reciprocating drive for the sliver, to synchronize their movements |
| DE10051413A1 (en) * | 2000-09-01 | 2002-03-14 | Rieter Ag Maschf | Unit to condense drawn sliver, at a spinner drawing unit, has rotating and perforated condensing units with inner suction with reciprocating axial movements to prevent wear and scoring |
-
2004
- 2004-05-21 DE DE200410026519 patent/DE102004026519A1/en not_active Withdrawn
-
2005
- 2005-02-23 WO PCT/EP2005/001856 patent/WO2005113872A1/en not_active Ceased
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3145208A1 (en) * | 1980-11-14 | 1982-06-09 | Murata Kikai K.K., Kyoto | "DRAWING PROCESS AND DRAWER FOR A SPINNING MACHINE" |
| DE10033188A1 (en) * | 2000-07-07 | 2002-01-17 | Stahlecker Fritz | Assembly to draw and condense a sliver for spinning has a coupling to link the underpressure channel at the condensing station with the reciprocating drive for the sliver, to synchronize their movements |
| DE10051413A1 (en) * | 2000-09-01 | 2002-03-14 | Rieter Ag Maschf | Unit to condense drawn sliver, at a spinner drawing unit, has rotating and perforated condensing units with inner suction with reciprocating axial movements to prevent wear and scoring |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102007013233A1 (en) * | 2007-03-15 | 2008-09-18 | Oerlikon Textile Gmbh & Co. Kg | Drafting equipment, has compression device including suction shoe and compressive strip tile, which perforates and winds around upper output roller, where shoe faces middle roller pair |
| CN101235562B (en) * | 2008-03-03 | 2010-06-02 | 上海市毛麻纺织科学技术研究所 | Connecting rod synchronous traverse collector device |
| CN102345190A (en) * | 2010-07-30 | 2012-02-08 | 罗托卡夫特公司 | Drafting system having tilted dominant drafting area |
| CN102586964A (en) * | 2010-12-20 | 2012-07-18 | 株式会社丰田自动织机 | Drafting device of spinning machine |
| CN107794608A (en) * | 2016-08-31 | 2018-03-13 | 株式会社丰田自动织机 | The fiber bundling apparatus of spinning machine |
| WO2019115346A1 (en) * | 2017-12-15 | 2019-06-20 | Maschinenfabrik Rieter Ag | Drafting arrangement for a spinning machine |
| US11879186B2 (en) | 2018-05-24 | 2024-01-23 | Saurer Spinning Solutions Gmbh & Co. Kg | Drafting system and drafting system unit for a spinning machine |
| EP3604646A1 (en) * | 2018-08-03 | 2020-02-05 | Saurer Spinning Solutions GmbH & Co. KG | Drawing frame unit and drawing frame for a spinning machine |
| JP2020020086A (en) * | 2018-08-03 | 2020-02-06 | ザウラー スピニング ソリューションズ ゲー・エム・ベー・ハー ウント コー． カー・ゲーＳａｕｒｅｒ Ｓｐｉｎｎｉｎｇ Ｓｏｌｕｔｉｏｎｓ ＧｍｂＨ ＆ Ｃｏ． ＫＧ | Draft device unit for spinning machine and draft machine |
| CN110791843A (en) * | 2018-08-03 | 2020-02-14 | 卓郎纺织解决方案两合股份有限公司 | Drafting system unit and drafting system for spinning machine |
| JP7416577B2 (en) | 2018-08-03 | 2024-01-17 | ザウラー スピニング ソリューションズ ゲー・エム・ベー・ハー ウント コー． カー・ゲー | Draft device units and draft devices for spinning machines |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102004026519A1 (en) | 2005-12-15 |
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