EP2986765B1 - Drawing system for a knitting machine - Google Patents

Drawing system for a knitting machine Download PDF

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Publication number
EP2986765B1
EP2986765B1 EP14714622.9A EP14714622A EP2986765B1 EP 2986765 B1 EP2986765 B1 EP 2986765B1 EP 14714622 A EP14714622 A EP 14714622A EP 2986765 B1 EP2986765 B1 EP 2986765B1
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EP
European Patent Office
Prior art keywords
rollers
pair
base plate
drawing equipment
equipment according
Prior art date
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.)
Not-in-force
Application number
EP14714622.9A
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German (de)
French (fr)
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EP2986765A1 (en
Inventor
Axel Flad
Thomas DZIADOSZ
Manuel Schwab
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sipra Patententwicklungs und Beteiligungs GmbH
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Sipra Patententwicklungs und Beteiligungs GmbH
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Publication of EP2986765A1 publication Critical patent/EP2986765A1/en
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Publication of EP2986765B1 publication Critical patent/EP2986765B1/en
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Classifications

    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B15/00—Details of, or auxiliary devices incorporated in, weft knitting machines, restricted to machines of this kind
    • D04B15/38—Devices for supplying, feeding, or guiding threads to needles
    • D04B15/48—Thread-feeding devices
    • 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
    • D01H5/60—Arrangements maintaining drafting elements free of fibre accumulations
    • D01H5/66—Suction devices exclusively
    • 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
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B9/00—Circular knitting machines with independently-movable needles
    • D04B9/14—Circular knitting machines with independently-movable needles with provision for incorporating loose fibres, e.g. in high-pile fabrics

Definitions

  • the invention relates to a drafting system for a knitting machine for producing a fiber structure from a roving over Riemchenwalzen guided Doppelriemchen and a submitteurwalzenzip, the Riemchenwalzen and practicolinwalzencontract each having an upper pressure roller and an electric motor driven lower roller and the rollers are arranged on the front side of a base plate while their axes are passed through the base plate and the drive means for the lower rollers are at least partially disposed on the back of the base plate.
  • Such a drafting system is already out of the WO 2010/028513 A1 known. It serves to produce a distorted fiber structure from a roving and to supply it directly to the needles of the knitting machine. In these combined spinning-knitting machines, therefore, the production of a conventional twisted yarn is dispensed with.
  • the knitted pieces produced from the warped fiber structure with substantially parallel aligned fibers also have a softer surface than knitted pieces made from a twisted yarn.
  • the drafting systems of these spinning-knitting machines are like the drafting of spinning machines exposed to fiber fly, which can lead to contamination and malfunction.
  • fibers or abrasion may accumulate in the nip between the rolls resting on the base plate and the base plate and lead to disturbances in the operation of the drafting system.
  • the back of the base plate is hermetically covered with a housing and there introduced compressed air, which is passed through holes in the base plate to the gap between the lower rollers and the front of the base plate. The compressed air is thus able to blow out the fibers located in the gap, so that they can not stick. However, the blown-off fibers can then settle on other machine parts.
  • the EP 0 532 457 A1 describes a drafting system for spinning machines, in which the roller pairs are mounted on a closed drive housing flying.
  • the drafting rollers are covered by a housing open on the feed side of the roving.
  • compressed air is introduced, which can flow through provided for the storage of the roller shafts in the drive housing openings to the drafting rollers in the open housing.
  • a suction is arranged, which is connected via a hose connection with the open housing.
  • this suction is severely limited in its effect, since the hose connection opens at a location far from the drafting rollers in the open housing.
  • the design of this drafting system is very large, so this drafting system can not be used in spinning-knitting machines.
  • CH-A-700380 shows an apparatus according to the preamble of claim 1.
  • the object of the present invention is to provide a drafting system for spinning-knitting machines, which largely avoids problems caused by fluff and abrasion.
  • the drafting arrangement according to the invention dispenses with a housing which at least partially covers the drafting rollers and instead uses an exhaust system specifically close to the point of origin for the fiber fly, in the region of the two upper rollers closest to the drafting system exit.
  • the suction extends over both rollers.
  • One of the top rollers is a Riemchenwalze.
  • the suction also serves to clean the straps. Also from outside penetrating dust can be reliably removed with the suction from the drafting system.
  • the mode of action of the suction can be further optimized by the suction at least partially covers at least the output top roller at its free end.
  • the suction is thereby concentrated even more on the rollers.
  • the partial lateral cover of the top roller prevents leakage of loose fibers and lint to the side.
  • the back of the base plate may be at least partially covered airtight by a housing cover, which is provided with at least one supply port for compressed air, and the base plate through-openings for the compressed air.
  • This air can be passed from the drafting device rear side and through the openings in the base plate to the drafting rollers and reliably prevent the setting of abrasion, lint or dust in cooperation with the suction.
  • the through holes are formed in the base plate of the axial holes for the axes of the upper rollers, through which the upper roller axles are passed with play.
  • the compressed air passes directly into the narrow gap between the roller bodies of the upper rollers and the base plate and from above into the corresponding gap between the lower roller bodies and the base plate and can therefore reliably keep this column clear of accumulations of fibers or dust.
  • the output roller pair may be arranged downstream of at least one nozzle for receiving the stretched fiber structure, with which the fiber structure a twist can be added.
  • the suction sucks the fiber structure in a clogging of the at least one nozzle.
  • the fiber structure can not accumulate in the drafting system and lead to contamination or even damage to the drafting system.
  • the drafting system 10 off Fig. 1 has a base plate 11, on whose front side 11.1 an input pressure roller pair 12, 13, a Riemchenwalzenzip 14, 15 and an output roller pair 16, 17 are arranged flying. Between the pairs of rollers 12, 13, 14, 15 and 16, 17, in which in each case the lower roller is driven by a motor, a not shown here in detail roving due to different speeds of the Roller pairs 12, 13, 14, 15, 16, 17 warped to a fiber structure. At the output of the pair of output rollers 16,17 a nozzle 18 is arranged with a transport tube 19, which forward the fiber structure to a knitting machine, also not shown here, preferably a circular knitting machine.
  • an extraction 20 is arranged on the front side 11.1 of the base plate 11, which extends over the top rollers 17 and 15 of the pair of output rollers 16, 17 and the output side Riemchenwalzencrues 14, 15 extends. It is thus able to suck lint, dust and abrasion, which arise when warping the roving, at the point of origin, so that these particles can not settle at another point in the drafting system.
  • the suction device 20 also laterally overlaps the output top roller 17, so that laterally emerging fibers or lint can be reliably detected.
  • the suction 20 is also arranged such that in a blockage of the nozzle 18 of the produced fiber strand can be reliably sucked by the suction 20.
  • a lower part 20.1 of the suction 20 directly adjoins the nozzle 18 for this purpose.
  • Fig. 4 shows the back of the base plate 11, which is completely covered by a housing cover 21.
  • a supply port 22 is arranged for compressed air.
  • FIGS. 5 and 6 clarify this compressed air flows from the back of the base plate 11 to the front side 11.1 Through holes 23, 24 and 25 for axes 26, 27, 28 for the top rollers 13, 15, 17 (see Fig. 1 ).
  • Fig. 6 illustrated in the enlarged view, the circular passage opening 23 for the axis 26 of the output upper roller 17.
  • the axis 26 is like the other axes 24 and 25 with clearance passed through the associated passage opening 23, so that the top rollers 13, 15, 17 by a not here acted upon clamping device shown and against the lower rollers 12, 14, 16 can be moved.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Knitting Machines (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)

Description

Die Erfindung betrifft ein Streckwerk für eine Strickmaschine zur Herstellung eines Faserverbandes aus einem Vorgarn mit über Riemchenwalzen geführten Doppelriemchen und einem Ausgangsdruckwalzenpaar, wobei die Riemchenwalzen und das Ausgangsdruckwalzenpaar jeweils eine obere Druckwalze und eine elektromotorisch angetriebene Unterwalze aufweisen und die Walzen auf der Vorderseite einer Grundplatte angeordnet sind, während ihre Achsen durch die Grundplatte hindurchgeführt sind und die Antriebsmittel für die Unterwalzen zumindest teilweise auf der Rückseite der Grundplatte angeordnet sind.The invention relates to a drafting system for a knitting machine for producing a fiber structure from a roving over Riemchenwalzen guided Doppelriemchen and a Ausgangsdruckwalzenpaar, the Riemchenwalzen and Ausgangsdruckwalzenpaar each having an upper pressure roller and an electric motor driven lower roller and the rollers are arranged on the front side of a base plate while their axes are passed through the base plate and the drive means for the lower rollers are at least partially disposed on the back of the base plate.

Ein solches Streckwerk ist bereits aus der WO 2010/028513 A1 bekannt. Es dient dazu, aus einem Vorgarn einen verzogenen Faserverband herzustellen und diesen den Nadeln der Strickmaschine direkt zuzuführen. Bei diesen kombinierten Spinn-Strickmaschinen wird daher auf die Herstellung eines herkömmlichen, verdrillten Garns verzichtet. Die aus dem verzogenen Faserverband mit im Wesentlichen parallel ausgerichteten Fasern hergestellten Gestrickstücke weisen zudem eine weichere Oberfläche auf als aus einem verdrillten Garn hergestellte Gestrickstücke.Such a drafting system is already out of the WO 2010/028513 A1 known. It serves to produce a distorted fiber structure from a roving and to supply it directly to the needles of the knitting machine. In these combined spinning-knitting machines, therefore, the production of a conventional twisted yarn is dispensed with. The knitted pieces produced from the warped fiber structure with substantially parallel aligned fibers also have a softer surface than knitted pieces made from a twisted yarn.

Die Streckwerke dieser Spinn-Strickmaschinen sind wie die Streckwerke von Spinnmaschinen Faserflug ausgesetzt, der zu Verschmutzungen und Betriebsstörungen führen kann. Insbesondere können sich Fasern oder Abrieb im Spalt zwischen den fliegend an der Grundplatte gelagerten Walzen und der Grundplatte ansammeln und zu Störungen des Betriebs des Streckwerks führen. Bei dem bekannten Streckwerk wird daher die Rückseite der Grundplatte mit einem Gehäuse luftdicht abgedeckt und dort Druckluft eingeführt, die durch Bohrungen in der Grundplatte zum Spalt zwischen den Unterwalzen und der Vorderseite der Grundplatte geleitet wird. Die Druckluft ist damit in der Lage, die sich im Spalt befindlichen Fasern auszublasen, sodass sich diese nicht festsetzen können. Die abgeblasenen Fasern können sich anschließend jedoch an anderen Maschinenteilen festsetzen.The drafting systems of these spinning-knitting machines are like the drafting of spinning machines exposed to fiber fly, which can lead to contamination and malfunction. In particular, fibers or abrasion may accumulate in the nip between the rolls resting on the base plate and the base plate and lead to disturbances in the operation of the drafting system. In the known drafting system, therefore, the back of the base plate is hermetically covered with a housing and there introduced compressed air, which is passed through holes in the base plate to the gap between the lower rollers and the front of the base plate. The compressed air is thus able to blow out the fibers located in the gap, so that they can not stick. However, the blown-off fibers can then settle on other machine parts.

Die EP 0 532 457 A1 beschreibt ein Streckwerk für Spinnmaschinen, bei dem die Walzenpaare an einem geschlossenen Antriebsgehäuse fliegend gelagert sind. Die Streckwerkswalzen sind von einem auf der Zufuhrseite des Vorgarns offenen Gehäuse abgedeckt. In das Antriebsgehäuse wird Druckluft eingeleitet, das durch für die Lagerung der Walzenwellen im Antriebsgehäuse vorgesehene Durchbrüche zu den Streckwerkwalzen im offenen Gehäuse strömen kann. Außerhalb des offenen Gehäuses ist eine Absaugung angeordnet, die über eine Schlauchverbindung mit dem offenen Gehäuse verbunden ist. Diese Absaugung ist jedoch in ihrer Wirkung stark eingeschränkt, da die Schlauchverbindung an einer von den Streckwerkwalzen weit entfernten Stelle in das offene Gehäuse mündet. Außerdem ist die Bauweise dieses Streckwerks sehr groß, sodass dieses Streckwerk nicht bei Spinn-Strick-Maschinen eingesetzt werden kann. CH-A-700380 zeigt eine Vorrichtung nach dem Oberbegriff des Anspruchs 1. Die Aufgabe der vorliegenden Erfindung besteht darin, ein Streckwerk für Spinn-Strickmaschinen bereit zu stellen, das durch Faserflug und Abrieb auftretende Probleme weitgehend vermeidet.The EP 0 532 457 A1 describes a drafting system for spinning machines, in which the roller pairs are mounted on a closed drive housing flying. The drafting rollers are covered by a housing open on the feed side of the roving. In the drive housing compressed air is introduced, which can flow through provided for the storage of the roller shafts in the drive housing openings to the drafting rollers in the open housing. Outside the open housing, a suction is arranged, which is connected via a hose connection with the open housing. However, this suction is severely limited in its effect, since the hose connection opens at a location far from the drafting rollers in the open housing. In addition, the design of this drafting system is very large, so this drafting system can not be used in spinning-knitting machines. CH-A-700380 shows an apparatus according to the preamble of claim 1. The object of the present invention is to provide a drafting system for spinning-knitting machines, which largely avoids problems caused by fluff and abrasion.

Die Aufgabe wird gelöst durch ein Streckwerk für eine Strickmaschine zur Herstellung eines Faserverbandes aus einem Vorgarn mit den Merkmalen des Anspruchs 1. Die Unteransprüche geben vorteilhafte Weiterbildungen an.The object is achieved by a drafting system for a knitting machine for producing a fiber structure from a roving with the features of claim 1. The dependent claims indicate advantageous developments.

Das erfindungsgemäße Streckwerk verzichtet auf ein die Streckwerkwalzen zumindest teilweise abdeckendes Gehäuse und setzt stattdessen eine Absaugung gezielt nahe am Entstehungsort für den Faserflug, im Bereich der beiden dem Streckwerksausgang am nächsten liegenden Oberwalzen ein. Die Absaugung erstreckt sich dabei über beide Walzen. Eine der Oberwalzen ist eine Riemchenwalze. Somit dient die Absaugung auch der Reinigung der Riemchen. Auch von außerhalb eindringendem Staub kann mit der Absaugung zuverlässig aus dem Streckwerk entfernt werden. Durch den Verzicht auf die Gehäusekapselung der Streckwerkwalzen sind diese auch stets für Wartungsarbeiten und zur Kontrolle des Verziehens des Faserverbandes frei zugänglich. Der benötigte Einbauraum für das Streckwerk ist gering, sodass dieses problemlos für Spinn-Strick-Maschinen eingesetzt werden kann.The drafting arrangement according to the invention dispenses with a housing which at least partially covers the drafting rollers and instead uses an exhaust system specifically close to the point of origin for the fiber fly, in the region of the two upper rollers closest to the drafting system exit. The suction extends over both rollers. One of the top rollers is a Riemchenwalze. Thus, the suction also serves to clean the straps. Also from outside penetrating dust can be reliably removed with the suction from the drafting system. By dispensing with the housing encapsulation of the drafting rollers, they are always freely accessible for maintenance and to control the distortion of the fiber structure. The required installation space for the drafting system is low, so that it can be easily used for spinning-knitting machines.

Die Wirkungsweise der Absaugung kann weiter optimiert werden, indem die Absaugung zumindest die Ausgangsoberwalze an ihrem freien Ende zumindest teilweise überdeckt. Das Absaugen wird dadurch noch stärker auf die Walzen konzentriert. Außerdem verhindert die teilweise seitliche Abdeckung der Oberwalze ein Entweichen loser Fasern und Flusen zur Seite hin.The mode of action of the suction can be further optimized by the suction at least partially covers at least the output top roller at its free end. The suction is thereby concentrated even more on the rollers. In addition, the partial lateral cover of the top roller prevents leakage of loose fibers and lint to the side.

Auch beim erfindungsgemäßen Streckwerk kann die Rückseite der Grundplatte zumindest teilweise durch einen Gehäusedeckel luftdicht abgedeckt sein, der mit mindestens einer Zuführöffnung für Druckluft versehen ist, und die Grundplatte Durchgangsöffnungen für die Druckluft aufweisen. Damit kann Luft von der Streckwerkrückseite her und durch die Öffnungen in der Grundplatte hindurch zu den Streckwerkwalzen geleitet werden und dort ein Festsetzen von Abrieb, Flusen oder Staub im Zusammenwirken mit der Absaugung zuverlässig verhindern.Also in the drafting system according to the invention, the back of the base plate may be at least partially covered airtight by a housing cover, which is provided with at least one supply port for compressed air, and the base plate through-openings for the compressed air. This air can be passed from the drafting device rear side and through the openings in the base plate to the drafting rollers and reliably prevent the setting of abrasion, lint or dust in cooperation with the suction.

Dabei ist es von besonderem Vorteil, wenn die Durchgangsöffnungen in der Grundplatte von Achslöchern für die Achsen der Oberwalzen gebildet sind, durch die die Oberwalzenachsen mit Spiel hindurchgeführt sind. Auf diese Weise gelangt die Druckluft direkt in den schmalen Spalt zwischen den Walzenkörpern der Oberwalzen und der Grundplatte und von oben her auch in den entsprechenden Spalt zwischen den Unterwalzenkörpern und der Grundplatte und kann diese Spalte daher zuverlässig von Ansammlungen von Fasern oder Staub freihalten.It is particularly advantageous if the through holes are formed in the base plate of the axial holes for the axes of the upper rollers, through which the upper roller axles are passed with play. In this way, the compressed air passes directly into the narrow gap between the roller bodies of the upper rollers and the base plate and from above into the corresponding gap between the lower roller bodies and the base plate and can therefore reliably keep this column clear of accumulations of fibers or dust.

Dem Ausgangswalzenpaar kann mindestens eine Düse zur Aufnahme des verstreckten Faserverbandes nachgeordnet sein, mit der dem Faserverband ein Drall versetzt werden kann. Bei dieser Ausgestaltung des Streckwerks ist es vorteilhaft, wenn die Absaugung bei einem Verstopfen der mindestens einen Düse den Faserverband absaugt. Der Faserverband kann sich dadurch nicht im Streckwerk stauen und zu Verunreinigungen oder gar Beschädigungen des Streckwerks führen.The output roller pair may be arranged downstream of at least one nozzle for receiving the stretched fiber structure, with which the fiber structure a twist can be added. In this embodiment of the drafting system, it is advantageous if the suction sucks the fiber structure in a clogging of the at least one nozzle. As a result, the fiber structure can not accumulate in the drafting system and lead to contamination or even damage to the drafting system.

Im Folgenden wird ein bevorzugtes Ausführungsbeispiel eines erfindungsgemäßen Streckwerks mit Bezug auf die Zeichnung näher beschrieben.In the following, a preferred embodiment of a drafting system according to the invention will be described in more detail with reference to the drawing.

Im Einzelnen zeigen:

Fig. 1
eine Ansicht der Vorderseite des Streckwerks;
Fig. 2
eine vergrößerte Detailansicht des Streckwerks aus Fig. 1;
Fig. 3
eine Schnittdarstellung der Streckwerkwalzen und der Absaugung des Streckwerks aus Fig. 1;
Fig. 4
eine perspektivische Ansicht des Streckwerks aus Fig. 1;
Fig. 5
eine Detaildarstellung der Unterwalzen und der Oberwalzenachsen des Streckwerks aus Fig. 1;
Fig. 6
eine vergrößerte Detaildarstellung einer Oberwalzenachse aus Fig. 5.
In detail show:
Fig. 1
a view of the front of the drafting system;
Fig. 2
an enlarged detail view of the drafting system Fig. 1 ;
Fig. 3
a sectional view of the drafting rollers and the extraction of the drafting system Fig. 1 ;
Fig. 4
a perspective view of the drafting system Fig. 1 ;
Fig. 5
a detailed view of the lower rollers and the upper roller axes of the drafting system Fig. 1 ;
Fig. 6
an enlarged detail of a top roller axis Fig. 5 ,

Das Streckwerk 10 aus Fig. 1 weist eine Grundplatte 11 auf, an deren Vorderseite 11.1 ein Eingangsdruckwalzenpaar 12, 13, ein Riemchenwalzenpaar 14, 15 sowie ein Ausgangswalzenpaar 16, 17 fliegend angeordnet sind. Zwischen den Walzenpaaren 12, 13, 14, 15 und 16, 17, bei welchen jeweils die Unterwalze motorisch angetrieben ist, wird ein hier nicht näher dargestelltes Vorgarn aufgrund der unterschiedlichen Geschwindigkeiten der
Walzenpaare 12, 13, 14, 15, 16, 17 zu einem Faserverband verzogen. Am Ausgang des Ausgangswalzenpaares 16,17 ist eine Düse 18 mit einem Transportrohr 19 angeordnet, die den Faserverband zu einer hier ebenfalls nicht gezeigten Strickmaschine, vorzugsweise einer Rundstrickmaschine weiterleiten. Weiter ist an der Vorderseite 11.1 der Grundplatte 11 eine Absaugung 20 angeordnet, die sich über die Oberwalzen 17 und 15 des Ausgangswalzenpaares 16, 17 und des ausgangsseitigen Riemchenwalzenpaares 14, 15 erstreckt. Sie ist damit in der Lage, Flusen, Staub und Abrieb, die beim Verziehen des Vorgarns entstehen, am Entstehungsort abzusaugen, sodass sich diese Partikel nicht an einer anderen Stelle im Streckwerk absetzen können.The drafting system 10 off Fig. 1 has a base plate 11, on whose front side 11.1 an input pressure roller pair 12, 13, a Riemchenwalzenpaar 14, 15 and an output roller pair 16, 17 are arranged flying. Between the pairs of rollers 12, 13, 14, 15 and 16, 17, in which in each case the lower roller is driven by a motor, a not shown here in detail roving due to different speeds of the
Roller pairs 12, 13, 14, 15, 16, 17 warped to a fiber structure. At the output of the pair of output rollers 16,17 a nozzle 18 is arranged with a transport tube 19, which forward the fiber structure to a knitting machine, also not shown here, preferably a circular knitting machine. Further, an extraction 20 is arranged on the front side 11.1 of the base plate 11, which extends over the top rollers 17 and 15 of the pair of output rollers 16, 17 and the output side Riemchenwalzenpaares 14, 15 extends. It is thus able to suck lint, dust and abrasion, which arise when warping the roving, at the point of origin, so that these particles can not settle at another point in the drafting system.

Insbesondere aus der vergrößerten Detailansicht in Fig. 2 ist zu erkennen, dass die Absaugung 20 die Ausgangsoberwalze 17 auch seitlich übergreift, sodass auch seitlich austretende Fasern oder Flusen sicher erfasst werden können.In particular, from the enlarged detail view in Fig. 2 It can be seen that the suction device 20 also laterally overlaps the output top roller 17, so that laterally emerging fibers or lint can be reliably detected.

Aus dem Schnittbild in Fig. 3 ist ersichtlich, dass die Absaugung 20 zudem derart angeordnet ist, dass bei einer Verstopfung der Düse 18 der produzierte Faserstrang von der Absaugung 20 zuverlässig abgesaugt werden kann. Ein unterer Teil 20.1 der Absaugung 20 grenzt dazu unmittelbar an die Düse 18 an.From the sectional view in Fig. 3 it can be seen that the suction 20 is also arranged such that in a blockage of the nozzle 18 of the produced fiber strand can be reliably sucked by the suction 20. A lower part 20.1 of the suction 20 directly adjoins the nozzle 18 for this purpose.

Fig. 4 zeigt die Rückseite der Grundplatte 11, die vollständig von einem Gehäusedeckel 21 abgedeckt ist. Im Gehäusedeckel 21 ist eine Zufuhröffnung 22 für Druckluft angeordnet. Fig. 4 shows the back of the base plate 11, which is completely covered by a housing cover 21. In the housing cover 21, a supply port 22 is arranged for compressed air.

Wie die Fig. 5 und 6 verdeutlichen, strömt diese Druckluft von der Rückseite der Grundplatte 11 zu deren Vorderseite 11.1 durch Durchgangsöffnungen 23, 24 und 25 für Achsen 26, 27, 28 für die Oberwalzen 13, 15, 17 (siehe Fig. 1).As the FIGS. 5 and 6 clarify this compressed air flows from the back of the base plate 11 to the front side 11.1 Through holes 23, 24 and 25 for axes 26, 27, 28 for the top rollers 13, 15, 17 (see Fig. 1 ).

Fig. 6 verdeutlicht in der vergrößerten Darstellung die kreisförmige Durchgangsöffnung 23 für die Achse 26 der Ausgangsoberwalze 17. Die Achse 26 ist wie die anderen Achsen 24 und 25 auch mit Spiel durch die zugehörige Durchgangsöffnung 23 hindurchgeführt, damit die Oberwalzen 13, 15, 17 durch eine hier nicht näher dargestellte Spanneinrichtung beaufschlagt und gegen die Unterwalzen 12, 14, 16 bewegt werden können. Fig. 6 illustrated in the enlarged view, the circular passage opening 23 for the axis 26 of the output upper roller 17. The axis 26 is like the other axes 24 and 25 with clearance passed through the associated passage opening 23, so that the top rollers 13, 15, 17 by a not here acted upon clamping device shown and against the lower rollers 12, 14, 16 can be moved.

Claims (7)

  1. Drawing equipment (10) for a knitting machine for the production of a fibre web made of a roving, having double belts, which are guided over a pair of belt rollers (14, 15), and a pair of output pressure rollers (16, 17), the pair of belt rollers (14, 15) and the pair of output pressure rollers (16, 17) having respectively an upper pressure roller (15, 17) and a lower roller (14, 16) which is driven by an electric motor, and the rollers (12 - 17) being disposed on the front-side (11.1) of a base plate (11), whilst the axles (26, 27, 28) thereof are guided through the base plate (11), and the drive means for the lower rollers (12, 14, 16) being disposed at least partially on the rear-side of the base plate (11), characterised in that the drawing equipment rollers (12 - 17) are not enclosed by a housing, and in that a suction unit (20), which extends over both upper rollers (15, 17), is disposed on the upper roller (17) of the pair of output pressure rollers (16, 17) and on the upper roller (15) of the pair of belt rollers (14, 15).
  2. Drawing equipment according to claim 1, characterised in that it has a pair of input pressure rollers (12, 13).
  3. Drawing equipment according to claim 1 or 2, characterised in that the suction unit (20) partially covers at least the output upper roller (17) at the free end thereof.
  4. Drawing equipment according to one of the claims 1 to 3, characterised in that the rear-side of the base plate (11) is covered, in an air-impermeable manner, at least partially by a housing cover (21), which is provided with at least one supply opening (22) for compressed air, and in that the base plate (11) has through-openings (23, 24, 25) for the compressed air.
  5. Drawing equipment according to claim 4, characterised in that the through-openings (23, 24, 25) are formed by axle holes for the axles (26, 27, 28) of the upper rollers (13, 15, 17), through which the upper roller axles (26, 27, 28) are guided with clearance.
  6. Drawing equipment according to one of the preceding claims, characterised in that, disposed subsequent to the pair of output rollers (16, 17), there is at least one nozzle (18) for receiving the drawn fibre web.
  7. Drawing equipment according to claim 6, characterised in that the suction unit (20) suctions off the fibre web in the case of an obstruction of the at least one nozzle (18).
EP14714622.9A 2013-04-15 2014-03-21 Drawing system for a knitting machine Not-in-force EP2986765B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102013103738.0A DE102013103738A1 (en) 2013-04-15 2013-04-15 Drafting system for a knitting machine
PCT/EP2014/055692 WO2014170087A1 (en) 2013-04-15 2014-03-21 Drawing system for a knitting machine

Publications (2)

Publication Number Publication Date
EP2986765A1 EP2986765A1 (en) 2016-02-24
EP2986765B1 true EP2986765B1 (en) 2018-02-14

Family

ID=50424203

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14714622.9A Not-in-force EP2986765B1 (en) 2013-04-15 2014-03-21 Drawing system for a knitting machine

Country Status (7)

Country Link
US (1) US20160024696A1 (en)
EP (1) EP2986765B1 (en)
JP (1) JP6383781B2 (en)
CN (1) CN105324523A (en)
DE (1) DE102013103738A1 (en)
TW (1) TWI654348B (en)
WO (1) WO2014170087A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017202085A1 (en) 2017-02-09 2018-08-09 Tom Hanrath Conveying device for supplying a yarn processing machine, in particular a spinning knitting machine and production device comprising such and method for supplying a yarn processing machine using such

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR969199A (en) * 1947-08-26 1950-12-15 Rieter Joh Jacob & Cie Ag Process ensuring the cleanliness of textile looms
EP0532457A1 (en) 1991-09-12 1993-03-17 Maschinenfabrik Rieter Ag Textile machine with so-called fly producing working units
US5546768A (en) * 1995-10-06 1996-08-20 Mayer Industries, Inc. Circular sliver knitting machine having a manifold for controlling multidirectional airflow
WO2004079068A2 (en) * 2003-03-06 2004-09-16 Koenig Reinhard Knitted fabric, method and device for producing said fabric
DE102006006502B4 (en) * 2006-02-13 2018-03-08 Reinhard König Spin knitting machine
DE102006037716A1 (en) * 2006-08-07 2008-02-14 Wilhelm Stahlecker Gmbh Textile knitting machine has drafting stations preceding knitting station with two or more flyer slivers
US7748239B2 (en) * 2006-12-03 2010-07-06 Reinhard Koenig Circular knitting machine for producing knitted fabrics using untwisted fibrous material
DE102007004441A1 (en) * 2007-01-25 2008-07-31 Sipra Patententwicklungs- Und Beteiligungsgesellschaft Mbh Machine for producing a knitwear made of fibrous material, in particular a knitting machine
DE102007027467A1 (en) * 2007-06-14 2008-12-18 König, Reinhard, Dr. Ing. Machine for spinning and knitting and a process
DE102007041171A1 (en) * 2007-08-28 2009-03-05 Sipra Patententwicklungs- Und Beteiligungsgesellschaft Mbh Method and knitting machine for producing a knitted fabric from substantially untwisted fiber material
CH699521A2 (en) 2008-09-09 2010-03-15 Rotorcraft Ag Drafting arrangement for a knitting machine.
CH700380A2 (en) * 2009-02-13 2010-08-13 Rotocraft Ag Circular knitting machine with integrated drafting.
DE102011053396B3 (en) * 2011-09-08 2012-08-23 Terrot Gmbh Knitted fabric producing device for use with knitting machine, has pinch rollers are rotatable in opposite direction, so as to withdraw solidified silver roving from spinning nozzle device to knitting machine

Also Published As

Publication number Publication date
CN105324523A (en) 2016-02-10
TWI654348B (en) 2019-03-21
US20160024696A1 (en) 2016-01-28
JP6383781B2 (en) 2018-08-29
TW201510300A (en) 2015-03-16
DE102013103738A1 (en) 2014-10-16
JP2016519224A (en) 2016-06-30
WO2014170087A1 (en) 2014-10-23
EP2986765A1 (en) 2016-02-24

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