EP0911434B1 - Ring spinning spindle with yarn cutting device - Google Patents

Ring spinning spindle with yarn cutting device Download PDF

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Publication number
EP0911434B1
EP0911434B1 EP98119832A EP98119832A EP0911434B1 EP 0911434 B1 EP0911434 B1 EP 0911434B1 EP 98119832 A EP98119832 A EP 98119832A EP 98119832 A EP98119832 A EP 98119832A EP 0911434 B1 EP0911434 B1 EP 0911434B1
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EP
European Patent Office
Prior art keywords
ring spinning
spinning spindle
cutters
bosses
severing device
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.)
Expired - Lifetime
Application number
EP98119832A
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German (de)
French (fr)
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EP0911434A3 (en
EP0911434A2 (en
Inventor
Kurt Hack
Peter Mann
Alois Gürtler
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.)
Oerlikon Textile GmbH and Co KG
Original Assignee
Zinser Textilmaschinen GmbH
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Publication of EP0911434A2 publication Critical patent/EP0911434A2/en
Publication of EP0911434A3 publication Critical patent/EP0911434A3/en
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Publication of EP0911434B1 publication Critical patent/EP0911434B1/en
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    • DTEXTILES; PAPER
    • D01NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01HSPINNING OR TWISTING
    • D01H9/00Arrangements for replacing or removing bobbins, cores, receptacles, or completed packages at paying-out or take-up stations ; Combination of spinning-winding machine
    • D01H9/02Arrangements for replacing or removing bobbins, cores, receptacles, or completed packages at paying-out or take-up stations ; Combination of spinning-winding machine for removing completed take-up packages and replacing by bobbins, cores, or receptacles at take-up stations; Transferring material between adjacent full and empty take-up elements
    • D01H9/16Yarn-severing arrangements, e.g. for cutting transfer tails; Separating of roving in flyer

Definitions

  • the invention relates to a ring spinning spindle with a separating device to separate a thread when pulling the cop off, the cutting and cams includes, the cams the Radially project sections in sections and also in Extend in the direction of the axis of the ring spinning spindle. This stretching the cam in the direction of the axis of the ring spinning spindle serves to protect against injury when touching the spindle in the area of the cutting knife and to prevent sliding of the piecing thread around the perimeter of the separator and adjusts essential feature of the same.
  • Such separation devices are from DE 42 37 475 A1 and DE 40 15 707 C2 known. These separators are the Cams arranged on a separate part from the cutting knife, the is usually designed as a pressure or injection molded part. The devices therefore require the production of two parts and their Assembly. This training is expensive and caused because of it the cutting knife is a wearing part that sometimes must be replaced, not inconsiderable spare parts costs.
  • the object of the invention was to provide a simpler structure and thus a more cost-effective production of such a separation device to reach.
  • the sheet metal part forming the separating device in Is pulled in the direction of the axis of the ring spinning spindle in it both in a plane and in a cone shell or cutting edges lying in a cylinder jacket as well as in Cam extending towards the axis of the ring spinning spindle molding.
  • the one-piece of the separating device has next cost-effective production the further advantage that they are the Avoids gaps in common multi-part separators, Experience has shown that thread pieces can pull into them, which are difficult or impossible to remove are.
  • the Separating device forming, punched, preferably still flat Sheet metal part cutting introduced (e.g. ground, punched, embossed) and the teeth that have remained in between the axis of the spindle and thus formed into cams.
  • This Cams can then be given a certain contour, be rounded off, for example.
  • This embodiment is particularly suitable for separators with one level To cut. However, it is also possible to cut in a beforehand Bring a pot-shaped sheet metal part.
  • the cams are against the axis of the ring spinning spindle are inclined so that they are at their free ends have a greater distance from the spindle axis than at the them with the web connecting the spindle and their the Cutting edges facing away from these cutting edges are threads or pieces of thread, such as when pulling of the cop are pulled behind the cams through which Centrifugal force thrown off again while the ring spinning spindle was running.
  • Cutting devices made of very thin sheet metal offer the Advantage, low cutting machining to sharpen the Cutting or low forces for shaping the cutting edges and to require equally low forces for the forming process.
  • Around sufficient strength even with such separators at least the cam, possibly also the entire separating device
  • the cams can be reached by bending back the Rag from which they are formed against themselves (Flanging) to be doubled. This also as a forming process feasible doubling can extend over the area of the cam out into the area of the ring body of the separating device extend.
  • a preferred embodiment of the invention for a Separating device the cutting of which in a conical or cylindrical Area is arranged by a crown cap marked not dissimilar fitting that the cams forming projections and recesses containing the cutting edges has, the recesses to be cut by scraping, for example are sharpened.
  • a separation device has none Undercuts behind which threads can get caught.
  • Such a separating device can also be made by so-called drums be deburred and rounded with emery stones without the recessed cutting edges reached by the emery bodies and could be made blunt.
  • the separation device without cutting as in a molding process in a negative mold part of the desired spatial shape his.
  • This can be a sintering of powder metal or a pressure or injection molding process. It has shown that with these manufacturing processes also the cutting edges can be achieved with the required sharpness and hardness. On such part has the advantage that it is in a single Manufacturing process is producible. At most they can Cutting in a preferably galvanic post-processing step subject to additional sharpening.
  • a separator The essential components of a separator are Cut and the cams. If a separator above further components such as behind recesses in the upper part of the spindle snapping noses, guide bushes for functionally appropriate Holders of the separation devices and the like, understands it is that these other components when pulling the the separating device forming sheet metal part can be molded.
  • Fig. 1 shows the essential for understanding the invention Parts of a common ring spinning spindle 1. It comprises a rotatable spindle upper part 3 mounted in a lower spindle part 2, on which a sleeve 4 is attached.
  • the upper spindle part 3 will by a spindle spindle 5, not shown in detail arranged drive, for example in the form of a tangential belt in Rotation offset.
  • On the sleeve 4 is by means of a Spinning ring 6 rotating rotor 7 from a thread 8, the a drafting device, not shown, via a thread guide 9 runs up, a winding 10 built.
  • Sleeve 4 and winding 10 form a cop 11.
  • the ring spinning spindle 1 is shown in a position in which after finishing a cop 11 of the spinning ring 6 down guided and in an underwind area 12 of the upper spindle part 3 a winding 13 has been formed. This runs from the winding of the cop 11 a spinning thread 14 for winding 13. This spinning thread 14 must be separated when pulling out a cop become. To facilitate this and pulling thread To prevent from underwinding 13 is between the underwinding area 12 and the cop 11 on the upper spindle part 3 Separating device 15 arranged with a separating knife, on the Cutting edge of the spinning thread 14 is present when the cop is pulled off pressed and cut in the process.
  • the separating device 15 is in an embodiment variant 2 and 3 of a flat steel disc from the outside edge by means of an in Fig. 3 indicated disc-shaped grinding wheel 16 one after the other sharp cutting edges 17 are ground between them these cutting-edge tabs 19 remain, of which two dashed lines are indicated on the side of the grinding wheel. These flaps 19 are then still in a pulling process bent over at the bottom so that they protrude the cutting edges 17 and one substantial extension in the direction of the axis of the ring spinning spindle Form 1 having cams 18. You pose this way both protection against touching the cutting edges as well Leading edges for the spinning thread.
  • FIGS. 4 and 5 show an embodiment in which the outer edge the steel disc from which the separator 15 is made is, preferably by punching into differently shaped, rags 19 and 20 indicated by dashed lines at one point is formed, from which on the one hand the cutting edges 17 and on the other hand the cams 18 are formed.
  • the separating cut goes 21 between the tabs 19 and 20 up to an imaginary dash-dotted circle 22, from which the cams 18 the plane of the cutting edges 17 are to be bent out.
  • the for the Cutting 17 provided tabs 19 are, for example, on the in Fig. 3 indicated way sharpened.
  • the one for the Nokken 18 provided tabs 20 are pulled towards the axis of the ring spinning spindle in the recognizable from Fig. 4 Curved up and down.
  • the contour of the cams 18 can with this production method by appropriate die cutting can be designed arbitrarily.
  • the projections 24 accordingly form the cams 18 'in the Recesses 25 are the cutting edges 17 '.
  • the recoveries 25 preferably have approximately radial to the spindle axis Side surfaces 26, which safely guide the piecing thread ensure between the cams 18 '.
  • the cams can be 18 "after another Proposal of the invention according to FIG. 8 by bending back their correspondingly longer flaps 20 doubled become. This deformation can also be caused by a pulling process in the direction of the axis of the ring spinning spindle.
  • the two Layers of the tabs 20 forming the cams 18 can be together glued, soldered or otherwise firmly connected and so that they are additionally stiffened.
  • the cutting edges 17 'as in FIGS. 6 and 7th together by scraping with a lifting movement Tool are manufactured.
  • the cams 18 "are through multiple bending of the tabs 20 formed. As can be seen bending the tabs 20 offers the possibility of the cams to train in various forms. Those lying on one level Cutting edges 17 'of FIG. 9 can also be angled as in FIG. 8 and then lie in the surface of a cone or a cylinder.
  • the separating devices of FIGS. 6 to 8 have their inner diameter a collar 28 by means of which the separator is guided exactly on the upper part of the spindle.
  • This covenant 28 can be molded during the pulling process of the separating device.
  • this collar 28- also have a nose 29, which behind a groove in Upper spindle part 2 occurs and the separating device on the Specifies the upper part of the spindle.
  • a separator about a shape as shown in Fig. 6 and 7 can also be formed by a non-cutting process be achieved in a negative form. This can be a pressure or injection molding process or around sintering powder metal act in a corresponding divisible form. In the Rule are one in this way in one step manufactured separator no further (post) operations required. In some cases it can be advantageous to sharpen the cutting edges 17, 17 '. This offers itself especially a galvanic operation.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)

Description

Die Erfindung betrifft eine Ringspinnspindel mit einer Trennvorrichtung zum Trennen eines Abspinnfadens beim Abziehen des Kopses, die Schneiden und Nocken umfaßt, wobei die Nocken die Schneiden abschnittsweise radial überragen und sich auch in Richtung der Achse der Ringspinnspindel erstrecken. Dieses Erstrecken der Nocken in Richtung der Achse der Ringspinnspindel dient zum Schutz vor Verletzung bei Berühren der Spindel im Bereich des Trennmessers und zum Verhindern eines Gleitens des Anspinnfadens um den Umfang der Trennvorrichtung und stellt ein wesentliches Merkmal derselben dar.The invention relates to a ring spinning spindle with a separating device to separate a thread when pulling the cop off, the cutting and cams includes, the cams the Radially project sections in sections and also in Extend in the direction of the axis of the ring spinning spindle. This stretching the cam in the direction of the axis of the ring spinning spindle serves to protect against injury when touching the spindle in the area of the cutting knife and to prevent sliding of the piecing thread around the perimeter of the separator and adjusts essential feature of the same.

Solche Trennvorrichtungen sind aus der DE 42 37 475 A1 und der DE 40 15 707 C2 bekannt. Bei diesen Trennvorrichtungen sind die Nocken an einem vom Trennmesser gesonderten Teil angeordnet, das meist als Druck- oder Spritzgußteil ausgebildet ist. Die Vorrichtungen erfordern daher das Fertigen zweier Teile und deren Zusammenbau. Diese Ausbildung ist teuer und verursacht, da es sich beim Trennmesser um ein Verschleißteil handelt, das bisweilen ersetzt werden muß, nicht unerhebliche Ersatzteilkosten.Such separation devices are from DE 42 37 475 A1 and DE 40 15 707 C2 known. These separators are the Cams arranged on a separate part from the cutting knife, the is usually designed as a pressure or injection molded part. The devices therefore require the production of two parts and their Assembly. This training is expensive and caused because of it the cutting knife is a wearing part that sometimes must be replaced, not inconsiderable spare parts costs.

Der Erfindung war die Aufgabe gestellt, einen einfacheren Aufbau und damit eine kostengünstigere Fertigung einer solchen Trennvorrichtung zu erreichen.The object of the invention was to provide a simpler structure and thus a more cost-effective production of such a separation device to reach.

Diese Aufgabe wird durch die im Kennzeichen des Anspruchs 1 aufgeführten Merkmale gelöst. Dadurch, daß die Trennvorrichtung aus einem zylindrischen oder schwach kegeligen, flach topfförmigen Teil gebildet wird, kann dessen Rand abschnittweise sowohl zu vorkragenden, stumpfkantigen Nocken als auch zu zurückgesetzten, scharfkantigen Schneiden ausgeformt werden.This object is achieved in the characterizing part of claim 1 listed features solved. The fact that the separator from a cylindrical or slightly conical, flat Pot-shaped part is formed, the edge of which can be in sections to cantilevered, blunt-edged cams as well recessed, sharp-edged blades are formed.

Wenn dieses zylindrische oder schwach kegelige, flach topfförmige Teil als gezogenes Blechteil gestaltet ist, kann die Trennvorrichtung samt ihrer Schneiden und Nocken aus ein und demselben, billigen Blechteil ausgeformt werden, das durch schnelle und damit kostengünstige Bearbeitungsgänge wie Stanzen, Ziehen, Prägen, Schaben usw. verformbar ist und bei dem nur ein Teil zu handhaben ist, wird eine wirtschaftlich vorteilhafte Fertigungsweise und Verwendung der Trennvorrichtung erreicht.If this is cylindrical or slightly tapered, flat Pot-shaped part is designed as a drawn sheet metal part, the Separating device with its cutting edges and cams from and the same, cheap sheet metal part that is formed by fast and therefore inexpensive processing steps such as punching, Drawing, embossing, scraping, etc. is deformable and only one Part to handle is an economically advantageous one Production method and use of the separation device achieved.

Dadurch, daß das die Trennvorrichtung bildende Blechteil in Richtung der Achse der Ringspinnspindel gezogen ist, lassen sich in ihm sowohl in einer Ebene als auch in einem Kegelmantel oder einem Zylindermantel liegende Schneiden wie auch die sich in Richtung der Achse der Ringspinnspindel erstreckenden Nocken ausformen. Die Einstückigkeit der Trennvorrichtung hat neben kostengünstiger Fertigung den weiteren Vorteil, daß sie die Fügespalten geläufiger mehrteiliger Trennvorrichtungen vermeidet, in die sich erfahrungsgemäß Fadenstücke einziehen können, die nur unter Schwierigkeiten oder gar nicht mehr entfernbar sind.Characterized in that the sheet metal part forming the separating device in Is pulled in the direction of the axis of the ring spinning spindle in it both in a plane and in a cone shell or cutting edges lying in a cylinder jacket as well as in Cam extending towards the axis of the ring spinning spindle molding. The one-piece of the separating device has next cost-effective production the further advantage that they are the Avoids gaps in common multi-part separators, Experience has shown that thread pieces can pull into them, which are difficult or impossible to remove are.

In einer Ausführungsvariante der Erfindung sind in das die Trennvorrichtung bildende, gestanzte, vorzugsweise noch ebene Blechteil Schneiden eingebracht (z.B. geschliffen, gestanzt, geprägt) und die dazwischen stehen gebliebenen Zähne in Richtung der Achse der Spindel gezogen und so zu Nocken geformt. Diese Nocken können dann noch mit einer bestimmten Kontour versehen, bspw. abgerundet werden. Diese Ausführungsform eignet sich insbesondere für Trennvorrichtungen mit in einer Ebene liegenden Schneiden. Es ist jedoch auch möglich, die Schneiden in ein vorher topfförmig gezogenes Blechteil einzubringen. In one embodiment variant of the invention, the Separating device forming, punched, preferably still flat Sheet metal part cutting introduced (e.g. ground, punched, embossed) and the teeth that have remained in between the axis of the spindle and thus formed into cams. This Cams can then be given a certain contour, be rounded off, for example. This embodiment is particularly suitable for separators with one level To cut. However, it is also possible to cut in a beforehand Bring a pot-shaped sheet metal part.

In einer weiteren Ausführungsvariante der Erfindung können in dem für die Trennvorrichtung vorgesehenen Blechteil bspw. durch Stanzen voneinander gesonderte und gegebenenfalls unterschiedlich geformte Lappen ausgebildet werden, aus denen dann durch unterschiedliche Bearbeitung, bspw. durch Schleifen einerseits Schneiden und bspw. durch Biegen oder Ziehen in Richtung der Achse der Ringspinnspindel andererseits Nocken gebildet werden. Diese Ausbildung erlaubt eine freiere Formgebung sowohl der Schneiden als auch der Nocken.In a further embodiment variant of the invention, in through the sheet metal part provided for the separating device Punch separate and possibly different shaped flaps are formed, from which then through different processing, for example by grinding on the one hand Cutting and, for example, by bending or pulling in the direction of the Axes of the ring spinning spindle on the other hand, cams are formed. This training allows a freer design of both Cutting as well as the cam.

Wenn bspw. die Nocken derart gegen die Achse der Ringspinnspindel geneigt ausgebildet sind, daß sie an ihren freien Enden einen größeren Abstand von der Spindelachse aufweisen als an dem sie mit der Ringspinnspindel verbindenden Steg und ihre den Schneiden zugekehrten Innenflächen von diesen Schneiden abgerückt sind, werden Fäden oder Fadenstücke, die etwa beim Abziehen des Kopses hinter die Nocken gezogen werden, durch die Zentrifugalkraft bei laufender Ringspinnspindel wieder abgeschleudert.If, for example, the cams are against the axis of the ring spinning spindle are inclined so that they are at their free ends have a greater distance from the spindle axis than at the them with the web connecting the spindle and their the Cutting edges facing away from these cutting edges are threads or pieces of thread, such as when pulling of the cop are pulled behind the cams through which Centrifugal force thrown off again while the ring spinning spindle was running.

Wenn diesen Nocken eine bestimmte Kontour gegeben werden soll, kann dies durch entsprechendes Stanzen des das Trennmesser bildenden Blechteils im Bereich der Nocken vor oder auch nach dem Schleifen der Schneiden erreicht werden.If you want to give these cams a certain contour, can do this by appropriately punching the separating knife forming Sheet metal part in the area of the cams before or after Grinding of the cutting edges can be achieved.

Aus sehr dünnem Blech bestehende Trennvorrichtungen bieten den Vorteil, geringe spangebende Bearbeitung zum Schärfen der Schneiden bzw. geringe Kräfte zum Anformen der Schneiden und ebenso geringe Kräfte für die Umformprozesses zu erfordern. Um auch bei solchen Trennvorrichtungen eine ausreichende Festigkeit zumindest der Nocken, gegebenenfalls auch der ganzen Trennvorrichtung zu erreichen, können die Nocken durch Zurückbiegen der Lappen, aus denen sie gebildet werden, gegen sich selbst (Bördeln) aufgedoppelt werden. Dieses ebenfalls als Umformvorgang ausführbare Aufdoppeln kann sich über den Bereich der Nokken hinaus in den Bereich des Ringkörpers der Trennvorrichtung erstrecken.Cutting devices made of very thin sheet metal offer the Advantage, low cutting machining to sharpen the Cutting or low forces for shaping the cutting edges and to require equally low forces for the forming process. Around sufficient strength even with such separators at least the cam, possibly also the entire separating device The cams can be reached by bending back the Rag from which they are formed against themselves (Flanging) to be doubled. This also as a forming process feasible doubling can extend over the area of the cam out into the area of the ring body of the separating device extend.

Eine bevorzugte Ausführungsvariante der Erfindung für eine Trennvorrichtung, deren Schneiden in einer kegeligen oder zylindrischen Fläche angeordnet sind, ist durch ein einem Kronenkorken nicht unähnliches Formstück gekennzeichnet, das die Nocken bildende Vorsprünge und die Schneiden enthaltende Rücksprünge aufweist, wobei die Rücksprünge bspw. durch Schaben zu Schneiden geschärft sind. Eine derartige Trennvorrichtung weist keinerlei Hinterschneidungen auf, hinter denen sich Fäden verfangen können. Eine solche Trennvorrichtung kann auch durch sog. Trommeln mit Schmirgelkörpern entgratet und verrundet werden, ohne daß die zurückgesetzten Schneiden von den Schmirgelkörpern erreicht und stumpf gemacht werden könnten.A preferred embodiment of the invention for a Separating device, the cutting of which in a conical or cylindrical Area is arranged by a crown cap marked not dissimilar fitting that the cams forming projections and recesses containing the cutting edges has, the recesses to be cut by scraping, for example are sharpened. Such a separation device has none Undercuts behind which threads can get caught. Such a separating device can also be made by so-called drums be deburred and rounded with emery stones without the recessed cutting edges reached by the emery bodies and could be made blunt.

In einer zweiten Ausführungsform kann die Trennvorrichtung spanlos als in einem Formgebungsvorgang in einer Negativform mit der angestrebten räumlichen Form hergestelltes Teil ausgebildet sein. Dabei kann es sich um ein Sintern von Pulvermetall oder um einen Druck- oder Spritzgießvorgang handeln. Es hat sich gezeigt, daß mit diesen Fertigungsverfahren auch die Schneiden in der erforderlichen Schärfe und Härte erzielbar sind. Ein solches Teil weist den Vorteil auf, daß es in einem einzigen Fertigungsvorgang herstellbar ist. Allenfalls können die Schneiden in einem vorzugsweise galvanischen Nachbearbeitungsgang einem zusätzlichen Schärfen unterworfen werden.In a second embodiment, the separation device without cutting as in a molding process in a negative mold part of the desired spatial shape his. This can be a sintering of powder metal or a pressure or injection molding process. It has shown that with these manufacturing processes also the cutting edges can be achieved with the required sharpness and hardness. On such part has the advantage that it is in a single Manufacturing process is producible. At most they can Cutting in a preferably galvanic post-processing step subject to additional sharpening.

Die wesentlichen Bestandteile einer Trennvorrichtung sind die Schneiden und die Nocken. Falls eine Trennvorrichtung darüber hinaus weitere Bestandteile wie hinter Einstiche im Spindeloberteil schnappende Nasen, Führungsbüchsen zum funktionsgerechten Haltern der Trennvorrichtungen und ähnliches aufweist, versteht es sich, daß auch diese weiteren Bestandteile beim Ziehen des die Trennvorrichtung bildenden Blechteils angeformt werden können. The essential components of a separator are Cut and the cams. If a separator above further components such as behind recesses in the upper part of the spindle snapping noses, guide bushes for functionally appropriate Holders of the separation devices and the like, understands it is that these other components when pulling the the separating device forming sheet metal part can be molded.

In den Figuren der Zeichnung sind Ausführungsbeispiele der Erfindung schematisch dargestellt. Es zeigen

Fig. 1
die Ansicht einer Ringspinnspindel mit Trennvorrichtung;
Fig. 2
eine erste Ausbildungsvariante der Erfindung mit einer scheibenförmigen Trennvorrichtung teilweise in Ansicht, teilweise in Schnittdarstellung;
Fig. 3
die Draufsicht auf den Gegenstand der Fig. 2;
Fig. 4 und 5
eine weitere Ausbildungsvariante der Erfindung in Darstellung wie in den Fig. 2 und 3;
Fig. 6 und 7
eine Ausbildungsvariante der Erfindung in Topfform und in Darstellung wie in den Fig. 2 und 3;
Fig. 8 und 9
Ausgestaltungen der Erfindung in ausschnittsweiser Schnittdarstellung.
Exemplary embodiments of the invention are shown schematically in the figures of the drawing. Show it
Fig. 1
the view of a ring spinning spindle with separating device;
Fig. 2
a first embodiment of the invention with a disc-shaped separator partly in view, partly in section;
Fig. 3
the top view of the subject of Fig. 2;
4 and 5
a further embodiment of the invention in representation as in Figures 2 and 3.
6 and 7
a variant of the invention in pot form and in representation as in Figures 2 and 3.
8 and 9
Embodiments of the invention in a sectional view.

Fig. 1 zeigt die für das Verständnis der Erfindung wesentlichen Teile einer geläufigen Ringspinnspindel 1. Sie umfaßt ein drehbar in einem Spindelunterteil 2 gelagertes Spindeloberteil 3, auf dem eine Hülse 4 aufgesteckt ist. Das Spindeloberteil 3 wird durch einen nicht näher dargestellten, in einer Spindelbank 5 angeordneten Antrieb bspw. in Form eines Tangentialriemens in Drehung versetzt. Auf der Hülse 4 wird mittels des auf einem Spinnring 6 umlaufenden Läufers 7 aus einem Faden 8, der von einem nicht dargestellten Streckwerk über einen Fadenführer 9 zuläuft, eine Wicklung 10 aufgebaut. Hülse 4 und Wicklung 10 bilden einen Kops 11.Fig. 1 shows the essential for understanding the invention Parts of a common ring spinning spindle 1. It comprises a rotatable spindle upper part 3 mounted in a lower spindle part 2, on which a sleeve 4 is attached. The upper spindle part 3 will by a spindle spindle 5, not shown in detail arranged drive, for example in the form of a tangential belt in Rotation offset. On the sleeve 4 is by means of a Spinning ring 6 rotating rotor 7 from a thread 8, the a drafting device, not shown, via a thread guide 9 runs up, a winding 10 built. Sleeve 4 and winding 10 form a cop 11.

Die Ringspinnspindel 1 ist in einer Position dargestellt, in der nach Fertigstellen eines Kopses 11 der Spinnring 6 nach unten geführt und in einem Unterwindebereich 12 des Spindeloberteils 3 eine Unterwindung 13 gebildet worden ist. Dadurch verläuft von der Wicklung des Kopses 11 ein Abspinnfaden 14 zur Unterwindung 13. Dieser Abspinnfaden 14 muß beim Abziehen eines Kopses getrennt werden. Um dies zu erleichtern und ein Abziehen von Faden aus der Unterwindung 13 zu verhindern, ist zwischen dem Unterwindebereich 12 und dem Kops 11 auf dem Spindeloberteil 3 eine Trennvorrichtung 15 mit einem Trennmesser angeordnet, an dessen Schneidkante der Abspinnfaden 14 anliegt, beim Abziehen des Kopses angedrückt und dabei durchtrennt wird.The ring spinning spindle 1 is shown in a position in which after finishing a cop 11 of the spinning ring 6 down guided and in an underwind area 12 of the upper spindle part 3 a winding 13 has been formed. This runs from the winding of the cop 11 a spinning thread 14 for winding 13. This spinning thread 14 must be separated when pulling out a cop become. To facilitate this and pulling thread To prevent from underwinding 13 is between the underwinding area 12 and the cop 11 on the upper spindle part 3 Separating device 15 arranged with a separating knife, on the Cutting edge of the spinning thread 14 is present when the cop is pulled off pressed and cut in the process.

Beim Wiederaufnehmen des Spinnvorgangs nach dem Kopswechsel wird ausgehend von der Unterwindung 13 ein gestrichelt angedeuteter Anspinnfaden 14' über die Trennvorrichtung 15 zur Wicklung des neuen Kopses gelegt. Dieser Anspinnfaden 14' wird in aller Regel während des Spinnvorgangs durch eine Einrichtung zum Entfernen der Unterwindung getrennt. Wenn dies nicht vorgesehen ist oder fälschlich nicht erfolgt, wird auch dieser Anspinnfaden 14' beim Abziehen des Kopses 11 durch die Trennvorrichtung 15 getrennt.When resuming the spinning process after the cop change starting from the winding 13, a dashed line Piecing thread 14 'via the separating device 15 for winding the new cops. This piecing thread 14 'is usually during the spinning process by means of removal separated from the subduction. If this is not provided for or is not wrongly done, this piecing thread 14 'at Pulling the cop 11 separated by the separating device 15.

Bisher bekannte Trennmesser waren an ihrer Außenkante mit einer ununterbrochenen Schneidkante versehen, die abschnittsweise von Nocken an einer gesonderten Abdeckscheibe überragt wurde, um Verletzungen beim unbedachten Berühren insbesondere des laufenden Spindeloberteils 3 zu vermeiden und um ein Gleiten des Anspinnfadens 14 um den Umfang des Trennmessers beim Abziehen des Kopses 11 zu verhindern.Previously known cutting knives were with a on their outer edge continuous cutting edge provided in sections by Cams on a separate cover plate was towered over Injuries when carelessly touched, especially while running To avoid upper spindle part 3 and to prevent the piecing thread from sliding 14 around the circumference of the cutting knife when pulling the To prevent Kopses 11.

Die erfindungsgemäße Trennvorrichtung 15 geht in einer Ausführungsvariante gemäß Fig. 2 und 3 von einer ebenen Stahlscheibe aus, in die von ihrer Außenkante her mittels einer in Fig. 3 angedeuteten scheibenförmigen Schleifscheibe 16 nacheinander scharfe Schneiden 17 eingeschliffen werden, zwischen denen diese Schneiden überragende Lappen 19 stehen bleiben, von denen seitlich der Schleifscheibe zwei gestrichelt angedeutet sind. Diese Lappen 19 werden dann noch in einem Ziehvorgang so nach unten umgebogen, daß sie die Schneiden 17 überragende und eine wesentliche Erstreckung in Richtung der Achse der Ringspinnspindel 1 aufweisende Nocken 18 bilden. Sie stellen auf diese Weise sowohl einen Schutz gegen Berühren der Schneiden als auch Führungskanten für den Abspinnfaden dar. The separating device 15 according to the invention is in an embodiment variant 2 and 3 of a flat steel disc from the outside edge by means of an in Fig. 3 indicated disc-shaped grinding wheel 16 one after the other sharp cutting edges 17 are ground between them these cutting-edge tabs 19 remain, of which two dashed lines are indicated on the side of the grinding wheel. These flaps 19 are then still in a pulling process bent over at the bottom so that they protrude the cutting edges 17 and one substantial extension in the direction of the axis of the ring spinning spindle Form 1 having cams 18. You pose this way both protection against touching the cutting edges as well Leading edges for the spinning thread.

Aus der Draufsicht der Fig. 3 ist der Wechsel der - im dargestellten Beispiel - zwölf Schneiden 17 mit den zwölf Nocken 18 erkennbar. Es versteht sich, daß sowohl die Anzahl der Schneiden 17 und Nocken 18 eine andere als auch die Breite der Schneiden und der Nocken unterschiedlich sein kann.From the top view of FIG. 3, the change is shown in FIG Example - twelve cutting edges 17 with the twelve cams 18 recognizable. It is understood that both the number of cutting edges 17 and cam 18 another as well as the width of the cutting edges and the cam can be different.

Die Fig. 4 und 5 zeigen eine Ausführungsform, bei der die Außenkante der Stahlscheibe, aus der die Trennvorrichtung 15 hergestellt wird, vorzugsweise durch Stanzen in unterschiedlich geformte, an einer Stelle gestrichelt angedeutete Lappen 19 und 20 ausgeformt ist, aus denen einerseits die Schneiden 17 und andererseits die Nocken 18 gebildet werden. Dabei geht der Trennschnitt 21 zwischen den Lappen 19 und 20 etwa bis zu einem gedachten strichpunktierten Kreis 22, von dem ab die Nocken 18 aus der Ebene der Schneiden 17 ausgebogen werden sollen. Die für die Schneiden 17 vorgesehenen Lappen 19 werden bspw. auf die in Fig. 3 angedeutete Weise scharfkantig angeschliffen. Die für die Nokken 18 vorgesehenen Lappen 20 werden durch Ziehen in Richtung der Achse der Ringspinnspindel in der aus Fig. 4 erkennbaren Weise nach oben und unten gebogen. Die Kontour der Nocken 18 kann bei dieser Fertigungsweise durch entsprechende Stanzformen beliebig gestaltet werden.4 and 5 show an embodiment in which the outer edge the steel disc from which the separator 15 is made is, preferably by punching into differently shaped, rags 19 and 20 indicated by dashed lines at one point is formed, from which on the one hand the cutting edges 17 and on the other hand the cams 18 are formed. The separating cut goes 21 between the tabs 19 and 20 up to an imaginary dash-dotted circle 22, from which the cams 18 the plane of the cutting edges 17 are to be bent out. The for the Cutting 17 provided tabs 19 are, for example, on the in Fig. 3 indicated way sharpened. The one for the Nokken 18 provided tabs 20 are pulled towards the axis of the ring spinning spindle in the recognizable from Fig. 4 Curved up and down. The contour of the cams 18 can with this production method by appropriate die cutting can be designed arbitrarily.

Aus Fig. 4 ist auch erkennbar, daß zwischen der Innenfläche der Nocken 18 und den Schneiden 17 ein geringer Abstand 23 eingehalten ist. Hierdurch wird erreicht, daß ein Faden oder Fadenrest, der sich in den Zwickel zwischen dem Anschliff einer Schneide 17 und dem "Knie" eines Nockens 18 eingezogen hat, sich dort nicht festgeklemmt. Wenn darüber hinaus die Nocken 18 gegen die Achse der Ringspinnspindel 1 in dem Sinne geneigt sind, daß ihre freien Enden von der Spindelachse wegweisen, wird die Wirkung erzielt, daß beim Lauf der Ringspinnspindel ein Fadenstück, das in diesem Bereich verblieben ist, durch die auf dieses Fadenstück wirkende Zentrifugalkraft ausgeschleudert wird. From Fig. 4 it can also be seen that between the inner surface of the Cam 18 and the cutting edges 17 maintained a small distance 23 is. This ensures that a thread or thread residue, which is in the gusset between the bevel one Cutting edge 17 and the "knee" of a cam 18 has drawn itself not clamped there. In addition, if the cams 18 against the axis of the ring spinning spindle 1 are inclined in the sense that The free ends point away from the spindle axis, the effect achieves that a thread piece during the running of the ring spinning spindle, which has remained in this area, by the on this thread piece acting centrifugal force is thrown out.

Bevorzugt werden Trennvorrichtungen mit kegelförmigen oder topfförmigen Trennmessern verwendet. Die in den Fig. 2 bis 5 für Trennvorrichtungen mit in einer Ebene liegenden Schneiden beschriebenen Ausbildungsvarianten der Erfindung lassen sich ohne weiteres auch auf Trennvorrichtungen übertragen, deren Schneiden in einer kegeligen oder in einer zylindrischen Fläche angeordnet sind. So können bei der Ausbildung gemäß den Fig. 4 und 5 in nicht näher dargestellter Weise nicht nur die die Nocken 18 bildenden Lappen 20, sondern auch die Lappen 19, aus denen die Schneiden 17 gebildet werden, entsprechend abgewinkelt werden, so daß diese Schneiden die vorgesehene räumliche Anordnung einnehmen.Separating devices with conical or pot-shaped cutting knives used. The in Figs. 2 to 5 for Separating devices with cutting edges lying in one plane are described Training variants of the invention can be without further transferred to separators, their cutting arranged in a conical or in a cylindrical surface are. So in the training according to FIGS. 4 and 5 in not shown in more detail, not only those forming the cams 18 Rag 20, but also the tab 19 from which the Cutting edges 17 are formed, are angled accordingly, so that these cutting edges take up the intended spatial arrangement.

Die Fig. 6 und 7 zeigen eine bevorzugte Ausbildung für derartige Trennvorrichtungen. Auch hier wird eine den Grundkörper der Trennvorrichtung 15' darstellende Stahlscheibe durch Stanzen und Ziehen zu einem einem bekannten Kronenkorken nicht unähnlichen Körper mit Vorsprüngen 24 und Einziehungen 25 geformt, an dem gleichzeitig an den Einziehungen Schneiden 17' angeschabt werden können. Die Vorsprünge 24 bilden demgemäß die Nocken 18', in den Einziehungen 25 liegen die Schneiden 17'. Die Einziehungen 25 haben vorzugsweise annähernd radial zur Spindelachse liegende Seitenflächen 26, die ein sicheres Führen des Anspinnfadens zwischen den Nocken 18' gewährleisten. Bei 27 ist der durch Abschaben abgetragene Bereich einer Einziehung 25 angedeutet, durch das an dieser eine Schneide 17' erzeugt wird.6 and 7 show a preferred embodiment for such Separators. Here too, the basic body of the Separating device 15 'representing steel disc by stamping and Pull to a not unlike a well-known crown cap Body with projections 24 and indentations 25 formed on the at the same time scraped on the recesses cutting 17 ' can. The projections 24 accordingly form the cams 18 'in the Recesses 25 are the cutting edges 17 '. The recoveries 25 preferably have approximately radial to the spindle axis Side surfaces 26, which safely guide the piecing thread ensure between the cams 18 '. At 27 the is through Scraped-off area of a confinement 25 indicated, through which a cutting edge 17 'is produced.

Um die Schleifarbeit an den Schneiden der Ausführungsvarianten der Fig. 2 bis 5 gering zu halten, erscheint es vorteilhaft, die Trennvorrichtung aus möglichst dünnem Blech zu fertigen. Um auch in diesem Falle eine ausreichende Standfestigkeit insbesondere der Nocken zu erreichen, können die Nocken 18" nach einem weiteren Vorschlag der Erfindung gemäß Fig. 8 durch Zurückbiegen ihrer entsprechend länger ausgebildeter Lappen 20 aufgedoppelt werden. Diese Verformung kann ebenfalls durch einen Ziehvorgang in Richtung der Achse der Ringspinnspindel erfolgen. Die beiden Lagen der die Nocken 18" bildenden Lappen 20 können miteinander verklebt, verlötet oder sonst wie fest miteinander verbunden und damit zusätzlich versteift werden. In der Ausführungsform der Fig. 8 können die Schneiden 17' ebenso wie in der Fig. 6 und 7 gemeinsam durch Schaben mit einem eine Hubbewegung ausführenden Werkzeug hergestellt werden.To the grinding work on the cutting edges of the design variants 2 to 5 to keep it low, it appears advantageous that To produce a separator from the thinnest possible sheet. Too too in this case sufficient stability in particular To reach the cam, the cams can be 18 "after another Proposal of the invention according to FIG. 8 by bending back their correspondingly longer flaps 20 doubled become. This deformation can also be caused by a pulling process in the direction of the axis of the ring spinning spindle. The two Layers of the tabs 20 forming the cams 18 "can be together glued, soldered or otherwise firmly connected and so that they are additionally stiffened. In the embodiment of the 8 can the cutting edges 17 'as in FIGS. 6 and 7th together by scraping with a lifting movement Tool are manufactured.

In der Ausführungsform der Fig. 9 sind die Nocken 18" durch mehrfaches Abwinkeln der Lappen 20 gebildet. Wie ersichtlich, bietet das Abwinkeln der Lappen 20 die Möglichkeit, die Nocken in vielfältiger Form auszubilden. Die in einer Ebene liegenden Schneiden 17' der Fig. 9 können auch wie in Fig. 8 abgewinkelt werden und liegen dann in der Fläche eines Kegels oder eines Zylinders.In the embodiment of FIG. 9, the cams 18 "are through multiple bending of the tabs 20 formed. As can be seen bending the tabs 20 offers the possibility of the cams to train in various forms. Those lying on one level Cutting edges 17 'of FIG. 9 can also be angled as in FIG. 8 and then lie in the surface of a cone or a cylinder.

Die Trennvorrichtungen der Fig. 6 bis 8 weisen an ihrem Innendurchmesser einen Bund 28 auf, mittels dessen die Trennvorrichtung exakt auf dem Spindeloberteil geführt ist. Dieser Bund 28 kann beim Ziehvorgang der Trennvorrichtung mit angeformt werden. Wie in der Ausführungsform der Fig. 8 gezeigt, kann dieser Bund 28-darüber hinaus eine Nase 29 aufweisen, die hinter eine Nut im Spindeloberteil 2 einfällt und die Trennvorrichtung auf dem Spindeloberteil festlegt.The separating devices of FIGS. 6 to 8 have their inner diameter a collar 28 by means of which the separator is guided exactly on the upper part of the spindle. This covenant 28 can be molded during the pulling process of the separating device. As shown in the embodiment of Fig. 8, this collar 28-also have a nose 29, which behind a groove in Upper spindle part 2 occurs and the separating device on the Specifies the upper part of the spindle.

Eine Trennvorrichtung etwa einer Form, wie sie wie in Fig. 6 und 7 dargestellt ist, kann auch durch einen spanlosen Formvorgang in einer Negativform erreicht werden. Hierbei kann es sich um einen Druck- oder Spritzgießvorgang oder um Sintern von Pulvermetall in einer entsprechenden teilbaren Form handeln. In der Regel sind an einer auf diese Weise in nur einem Arbeitsschritt hergestellten Trennvorrichtung keine weiteren (Nach-)Arbeitsgänge erforderlich. In manchen Fällen kann es vorteilhaft sein, die Schneiden 17, 17' nachzuschärfen. Hierzu bietet sich insbesondere ein galvanischer Arbeitsgang an. A separator about a shape as shown in Fig. 6 and 7 can also be formed by a non-cutting process be achieved in a negative form. This can be a pressure or injection molding process or around sintering powder metal act in a corresponding divisible form. In the Rule are one in this way in one step manufactured separator no further (post) operations required. In some cases it can be advantageous to sharpen the cutting edges 17, 17 '. This offers itself especially a galvanic operation.

BezugszahlenlisteLIST OF REFERENCE NUMBERS

11
RingspinnspindelRing spinning spindle
22
SpindelunterteilSpindle base
33
SpindeloberteilSpindle top part
44
Hülseshell
55
Spindelbankspindle rail
66
Spinnringspinning ring
77
LäuterLäuter
88th
Fadenthread
99
Fadenführerthread guides
1010
Wicklungwinding
1111
KopsKops
1212
UnterwindebereichUnderwind area
1313
Unterwindungunderwinding
1414
AbspinnfadenAbspinnfaden
14'14 '
Anspinnfadenpiecing
15, 15'15, 15 '
Trennvorrichtungseparating device
1616
Schleifscheibegrinding wheel
17, 17'17, 17 '
SchneidenTo cut
18, 18', 18"18, 18 ', 18 "
Nockencam
19, 2019, 20
Lappencloth
2121
Trennschnittseparating cut
2222
Kreiscircle
2323
Abstanddistance
2424
Vorsprüngeprojections
2525
Einziehungenrecoveries
2626
Seitenflächenfaces
2727
Abgeschabter BereichScrapped area
2828
BundFederation
2929
Nasenose

Claims (14)

  1. Ring spinning spindle with a severing device for severing a spin-off thread during the take-up of a cop, the said severing device comprising cutters and bosses, the bosses partially projecting radially beyond the cutters and also extending in the direction of the axis of the ring spinning spindle, characterized in that the severing device (15, 15') consists of a single cylindrical or slightly conical part which is in the form of a shallow bowl and the rim of which is shaped partially into projecting blunt-edged bosses (18, 18', 18'') and into set-back sharp-edged cutters (17, 17').
  2. Ring spinning spindle according to Claim 1, characterized in that the severing device (15, 15') is a drawn sheet-metal part.
  3. Ring spinning spindle according to Claim 2, characterized in that cutters (17) which are separated from one another are incorporated into the outer edge of the sheet-metal part forming the severing device (15), and at least the teeth which have remained between the cutters (17) are drawn in the direction of the axis of the ring spinning spindle (1) and form the bosses (18). (Fig. 2 and 3)
  4. Ring spinning spindle according to Claim 2, characterized in that the outer edge of the sheet-metal part forming the severing device (15) is shaped into a multiplicity of separate tabs (19, 20) which are produced alternately as cutters (17, 17') and as bosses (18, 18', 18'') projecting beyond the cutters, and in that at least the tabs (20) forming the bosses (18) are drawn in the direction of the axis of the ring spinning spindle (1). (Fig. 4 and 5)
  5. Ring spinning spindle according to Claim 3 or 4, characterized in that the bosses (18'') are doubled up by a portion of the length of the tongues or tabs (20) forming them being bent back. (Fig. 8 and 9)
  6. Ring spinning spindle according to Claim 5, characterized in that there is a clearance (23) between the inner faces of the bosses (18) and the cutters (17) (Fig. 4).
  7. Ring spinning spindle according to Claim 1, characterized in that the bosses (18, 18', 18'') are inclined relative to the axis of the ring spinning spindle (1) in such a way that their free ends point away from the spindle axis. (Fig. 4 and 7 to 9)
  8. Ring spinning spindle according to Claim 1, characterized in that the sheet-metal part forming the severing device (15') is drawn to form a bowl-shaped cylindrical or slightly conical body with projections (24) forming the bosses (18') and with setbacks (25) containing the cutters (17'). (Fig. 6 and 7)
  9. Method for producing the severing device according to Claim 8, characterized in that the wall of the bowl-shaped sheet-metal part is machined by means of a drawing tool which shapes set-back sharp-edged cutters by the removal of material during the drawing operation in separate regions of the rim of this wall.
  10. Method according to Claim 9, characterized in that the severing device (15, 15') is a part produced in a non-cutting production pass during which at least both the bosses (18, 18', 18") and the cutters (17, 17') are shaped.
  11. Method for producing the ring spinning spindle according to Claim 10, characterized in that the non-cutting production pass is a powder-metal sintering operation.
  12. Method for producing the ring spinning spindle according to Claim 10, characterized in that the non-cutting production pass is a die-casting or injection-moulding operation.
  13. Method for producing the ring spinning spindle according to Claim 10, characterized in that, after the non-cutting production pass, the severing device (15, 15') has been subjected to retreatment for the sharpening of the cutters (17, 17').
  14. Method for producing the ring spinning spindle according to Claim 13, characterized in that the retreatment of the severing device (15, 15') has taken place in an electroplating production pass.
EP98119832A 1997-10-22 1998-10-20 Ring spinning spindle with yarn cutting device Expired - Lifetime EP0911434B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19746536A DE19746536C2 (en) 1997-10-22 1997-10-22 Ring spinning spindle with a cutting knife
DE19746536 1997-10-22

Publications (3)

Publication Number Publication Date
EP0911434A2 EP0911434A2 (en) 1999-04-28
EP0911434A3 EP0911434A3 (en) 2000-07-19
EP0911434B1 true EP0911434B1 (en) 2003-04-09

Family

ID=7846211

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98119832A Expired - Lifetime EP0911434B1 (en) 1997-10-22 1998-10-20 Ring spinning spindle with yarn cutting device

Country Status (4)

Country Link
US (1) US6042045A (en)
EP (1) EP0911434B1 (en)
JP (1) JPH11189936A (en)
DE (2) DE19746536C2 (en)

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WO2017072619A1 (en) 2015-10-28 2017-05-04 Maschinenfabrik Rieter Ag Cutting device

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CN102102250B (en) * 2009-12-22 2013-09-25 千田机电有限公司 Spindle yarn cutter used for spinning frame
CN102296392A (en) * 2011-07-25 2011-12-28 无锡集聚智能纺织机械有限公司 Improvement of spindle suitable for mechanically pulling yarns
CN103114357B (en) * 2013-03-08 2015-10-07 柳州华晟纺织有限公司 Polished rod spindle cutting device
AT515349B1 (en) * 2014-01-30 2015-11-15 Electrovac Hacht & Huber Gmbh Method of making a lighter socket

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US4075919A (en) * 1973-12-27 1978-02-28 Kabushiki Kaisha Toyoda Jidoshokki Seisakusho Cutting blade of a device for cutting a yarn in a textile machine
JPS5094242A (en) * 1973-12-27 1975-07-26
JPS5720613Y2 (en) * 1973-12-27 1982-05-04
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JPH08109528A (en) * 1994-10-05 1996-04-30 Toyota Autom Loom Works Ltd Tail yarn cutter in spinning machine
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Publication number Priority date Publication date Assignee Title
WO2017072619A1 (en) 2015-10-28 2017-05-04 Maschinenfabrik Rieter Ag Cutting device

Also Published As

Publication number Publication date
DE19746536C2 (en) 2002-08-01
JPH11189936A (en) 1999-07-13
DE59807834D1 (en) 2003-05-15
EP0911434A3 (en) 2000-07-19
EP0911434A2 (en) 1999-04-28
US6042045A (en) 2000-03-28
DE19746536A1 (en) 1999-04-29

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