EP1123996B1 - Method for automatically separating rovings during doffing on a roving frame - Google Patents

Method for automatically separating rovings during doffing on a roving frame Download PDF

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Publication number
EP1123996B1
EP1123996B1 EP01100618A EP01100618A EP1123996B1 EP 1123996 B1 EP1123996 B1 EP 1123996B1 EP 01100618 A EP01100618 A EP 01100618A EP 01100618 A EP01100618 A EP 01100618A EP 1123996 B1 EP1123996 B1 EP 1123996B1
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EP
European Patent Office
Prior art keywords
roving
press
bobbin
finger platform
twist
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
EP01100618A
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German (de)
French (fr)
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EP1123996A1 (en
Inventor
Franz Dr. Machnik
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
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Zinser Textilmaschinen GmbH
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Publication of EP1123996A1 publication Critical patent/EP1123996A1/en
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Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H9/00—Arrangements for replacing or removing bobbins, cores, receptacles, or completed packages at paying-out or take-up stations ; Combination of spinning-winding machine
    • D01H9/02—Arrangements 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
    • D01H9/14—Arrangements 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 for preparing machines for doffing of yarns, e.g. raising cops prior to removal
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H9/00—Arrangements for replacing or removing bobbins, cores, receptacles, or completed packages at paying-out or take-up stations ; Combination of spinning-winding machine
    • D01H9/02—Arrangements 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
    • D01H9/16—Yarn-severing arrangements, e.g. for cutting transfer tails; Separating of roving in flyer

Definitions

  • the invention relates to a method for the automatic separation of Roving when removing bobbins on a roving machine, with suppliers of the roving up to a press finger bed and separating the roving between the press finger platform and the coil circumference.
  • the object of the present invention is a method to create the type mentioned, in which the roving end is fixed on the spool, and the roving is then separated such that a roving piece of predetermined length remains on the press finger platform.
  • This object is achieved by the method step that after unwinding the Vorgamreserve by turning back the spool and lowering the Press finger bed along the bobbin axis, with the roving at the bottom of the upper turn cone rolls to form (false) rotation and its rotation is reduced in the area between the rolled edge and the press finger platform and before pulling the roving apart in the area of reduced twist Press finger bed is moved a distance along the coil circumference, whereby the roving is rolled between the press finger platform and the bobbin circumference and rotated is provided, which propagates in a portion of the area of reduced rotation.
  • the point of separation of the roving can therefore be determined by the distance over which the press finger box pulled over the coil circumference and thereby the Specify the rolled roving (again) given rotation very precisely. With that too the lengths of the roving ends on the spool and on the press finger platform are very precise adjustable.
  • Figures 1 to 4 show a roving bobbin in a schematic side view in different phases in the automatic separation of roving in a defined Area.
  • a work station of a roving machine is schematic Shown side view, a roving spool 1 on a rotatable stored roving sleeve 3 is wound.
  • a roving 2 does not run over one Wing bench shown in more detail through a wing to a press finger platform 10 and is wound on the roving tube 3.
  • the roving reserve of A to D by turning coil 1 back and lowering the press finger platform unwound again along the coil axis. While the roving 2 here on rolls down the lower edge of the upper winding cone B, a false wire is formed, which increases the number of turns per length in section A to B and in section B to D is reduced.
  • the length of the distance D to E is chosen so that sufficient There are rotations per length in section E to C.
  • the press finger platform 10 is in the next step moved to point F on the roving spool 1. With this movement it becomes Roving 2 separated exactly in the area of the previously created weak point C. (Fig.4).
  • the advantage of this method according to the invention also exists, among other things in that the vulnerability in area C with high certainty in the aforementioned Part is generated and one end after separating the roving 2 with the desired length C-D remains on the press finger platform 10. hereby there is a significant improvement in the production process and automatic separation of the roving 2 when pulling a bobbin 1 on Roving.

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

Description

Die Erfindung bezieht sich auf ein Verfahren zum selbsttätigen Trennen von Vorgarn beim Abziehen von Spulen an einer Vorspinnmaschine, mit Zuliefern des Vorgarns bis zu einer Pressfingerpritsche und Trennen des Vorgarns zwischen der Pressfingerpritsche und dem Spulenumfang.The invention relates to a method for the automatic separation of Roving when removing bobbins on a roving machine, with suppliers of the roving up to a press finger bed and separating the roving between the press finger platform and the coil circumference.

Zum allgemeinen Stand der Technik zählen bereits mehrere Verfahren zum Trennen des Vorgarns zwischen dem Pressfinger an einem Flügel der Vorspinnmaschine und einer vollen Vorgarnspule. Bei einem derartigen bekannten Verfahren (DE 196 31 756 A1) erfolgt ein Erzeugen eines Vorgamstückes mit erhöhter Anzahl von Drehungen je Längeneinheit durch Erhöhen des Verhältnisses der Flügeldrehzahl zur Vorgarnzulieferung des Streckwerkes zum Flügel bei am Bewicklungshub der letzten Lage anliegender Pressfingerpritsche. Das Vorgarnstück mit der höheren Festigkeit wird durch Zuliefern des Streckwerkes und durch Drehen der Spule bis zur Pressfingerpritsche gefördert. Anschließend wird durch Zurückdrehen der Spule das Vorgarn zwischen der Pressfingerpritsche und der Spule entspannt; beim Absenken des Spulenwagens in die Abzugsstellung wird das Vorgarn getrennt.Several methods already belong to the general state of the art Separate the roving between the press finger on a wing of the roving machine and a full roving spool. In such a known method (DE 196 31 756 A1), a Vorgamstücks with increased Number of rotations per unit length by increasing the ratio the wing speed for roving delivery of the drafting system to the wing at am Winding stroke of the last layer of press-finger bed. The roving piece with the higher strength is achieved by supplying the drafting system and conveyed to the press finger platform by turning the coil. Then will by turning back the spool the roving between the press finger platform and the coil relaxes; when lowering the bobbin carriage into the trigger position the roving is separated.

Nachteilig ist bei diesem bekannten Verfahren, dass das spulenseitige Ende des Vorgarns nach dem Trennen nicht fixiert ist und dass dementsprechend die Länge des von der Pressfingerpritsche herunterhängenden Vorgarnendes von Fall zu Fall stark variiert. Es liegt damit keine genaue Trennstelle vor. The disadvantage of this known method is that the coil-side end of the The roving after the separation is not fixed and accordingly the length of the roving hanging from the press finger bed from case to case Case varies widely. There is therefore no exact separation point.

In der DE 195 12 578 A1 ist bereits ein Verfahren zum Trennen von Vorgarnlunten vor dem Abziehen von Spulen an Vorspinnmaschinen beschrieben, bei dem - nachdem oberhalb des Bewicklungshubes eine Vorgamreserve umwunden und das zwischen Streckwerksausgang und Preßfinger vorhandene Vorgarn durch erhöhte Drehung verfestigt worden war - durch eine Rückwärtsdrehbewegung der Spule und eine gleichzeitige Aufwärtsbewegung des Spulenwagens das von der Hülse abgewundene Material straff über den oberen Spulenkegel geführt und mit einem Falschdrall versehen wird und die Aufwärtsbewegung des Spulenwagens fortgesetzt wird, bis das Vorgarn durch Abreißen getrennt wird. Dabei erfolgt das Trennen des Vorgarnes - wie in Spalte 1 Zeilen 28/29 betont - zwischen Spulenkegelkante und Preßfingerausgang. Auch hier liegt demnach keine genaue Trennstelle vor, die Länge der Vorgamenden auf der Spule und am Preßfinger sind zufällig. DE 195 12 578 A1 already provides a method for separating roving slags described the removal of bobbins on roving machines, in which - after a Vorgamreserve wound around the winding stroke and that between The drafting system outlet and press finger existing roving solidified by increased rotation by a reverse rotation of the spool and a simultaneous Upward movement of the bobbin carriage the material coiled from the sleeve taut over the upper coil cone and provided with a false twist and the upward movement of the bobbin carriage continues until the roving is separated by tearing. The roving is separated - as in the column 1 lines 28/29 emphasized - between coil taper edge and press finger exit. Here too there is therefore no exact separation point, the length of the previous one on the The coil and the press finger are random.

Entsprechend liegt der vorliegenden Erfindung die Aufgabe zugrunde, ein Verfahren der eingangs genannten Art zu schaffen, bei welchem das Vorgarnende auf der Spule fixiert ist, und das Vorgarn anschließend derart getrennt wird, dass ein Vorgarnstück vorbestimmter Länge an der Pressfingerpritsche verbleibt.Accordingly, the object of the present invention is a method to create the type mentioned, in which the roving end is fixed on the spool, and the roving is then separated such that a roving piece of predetermined length remains on the press finger platform.

Diese Aufgabe wird erfindungsgemäß gelöst durch den Verfahrensschritt, daß nach dem Abwickeln der Vorgamreserve durch Rückdrehen der Spule und Absenken der Pressfingerpritsche entlang der Spulenachse, bei dem das Vorgarn am unteren Rand des oberen Windungskegels unter Bilden von (Falsch)Drehung abrollt und seine Drehung im Bereich zwischen Rollrand und Pressfingerpritsche vermindert wird und vor dem Auseinander-Ziehen des Vorgarnes im Bereich der verminderten Drehung die Pressfingerpritsche um eine Strecke entlang des Spulenumfangs bewegt wird, wobei das Vorgarn zwischen Pressfingerpritsche und Spulenumfang gerollt und mit Drehung versehen wird, die sich in einen Teilbereich des Bereiches verminderter Drehung fortpflanzt.This object is achieved by the method step that after unwinding the Vorgamreserve by turning back the spool and lowering the Press finger bed along the bobbin axis, with the roving at the bottom of the upper turn cone rolls to form (false) rotation and its rotation is reduced in the area between the rolled edge and the press finger platform and before pulling the roving apart in the area of reduced twist Press finger bed is moved a distance along the coil circumference, whereby the roving is rolled between the press finger platform and the bobbin circumference and rotated is provided, which propagates in a portion of the area of reduced rotation.

Dadurch wird erreicht, daß das Vorgam nicht in diesem Bereich, sondern an dessen preßfingerabseitigen Ende getrennt wird. Das Vorgarn wird auch nicht oberhalb dieses Endes getrennt, well es dort fest am Spulenumfang anliegt und durch diese Pressung verfestigt wird. Das Trennen erfolgt tatsächlich oberhalb des durch Drehung (wieder) verfestigten Bereiches, weil dort die Festigkeit höher ist als im drehungsverminderten Bereich und es erfolgt am unteren Ende des drehungsverminderten Bereiches, weil dort die Zugkraft am höchsten ist.This ensures that the Vorgam not in this area, but in its area end of the press finger is separated. The roving is also not above this End separated, because it is tight against the coil circumference and by this pressure is solidified. The separation actually takes place above the by rotation (again) solidified area, because the strength there is higher than in the reduced rotation Area and it takes place at the lower end of the rotation reduced area because where the traction is highest.

Der Punkt des Trennens des Vorgarnes läßt sich demnach durch die Strecke, über die die Preßfingerpritsche über den Spulenumfang gezogen und über die dadurch dem abgerollten Vorgarn (wieder) erteilte Drehung sehr exakt vorgeben. Damit sind auch die Längen der Vorgarnenden an der Spule und an der Preßfingerpritsche sehr genau einstellbar.The point of separation of the roving can therefore be determined by the distance over which the press finger box pulled over the coil circumference and thereby the Specify the rolled roving (again) given rotation very precisely. With that too the lengths of the roving ends on the spool and on the press finger platform are very precise adjustable.

Hierdurch ergibt sich der Vorteil, dass die gewünschte Schwachstelle mit großer Sicherheit in einem bestimmten Teilstück des Vorgarns erzeugt wird, und nach dem Trennen des Vorgarns ein Ende mit einer entsprechenden gewünschten Länge an der Pressfingerpritsche verbleibt.This has the advantage that the desired weak point is large Security is generated in a particular section of the roving, and after separating the roving one end with an appropriate desired one Length on the press finger platform remains.

Vorteilhafte Weiterbildungen ergeben sich aus den Unteransprüchen.Advantageous further developments result from the subclaims.

Die Erfindung wird nachfolgend anhand eines in der Zeichnung dargestellten Ausführungsbeispiels näher beschrieben. The invention is illustrated below with the aid of one in the drawing Embodiment described in more detail.

Die Figuren 1 bis 4 zeigen in schematischer Seitendarstellung eine Vorgarnspule in verschiedenen Phasen beim selbsttätigen Trennen von Vorgarn in einem definierten Bereich.Figures 1 to 4 show a roving bobbin in a schematic side view in different phases in the automatic separation of roving in a defined Area.

In den Figuren 1 bis 4 ist eine Arbeitsstelle einer Vorspinnmaschine in schematischer Seitenansicht dargestellt, wobei eine Vorgarnspule 1 auf einer drehbar gelagerten Vorgarnhülse 3 aufgewickelt ist. Ein Vorgarn 2 läuft über eine nicht näher dargestellte Flügelbank durch einen Flügel zu einer Pressfingerpritsche 10 und wird auf der Vorgarnhülse 3 aufgewickelt. Es liegt eine Bewicklung 15 vor, mit einem oberen Windungskegel 12 und einem unteren Windungskegel 13.In Figures 1 to 4, a work station of a roving machine is schematic Shown side view, a roving spool 1 on a rotatable stored roving sleeve 3 is wound. A roving 2 does not run over one Wing bench shown in more detail through a wing to a press finger platform 10 and is wound on the roving tube 3. There is a winding 15 with an upper cone 12 and a lower cone 13.

Nachdem gemäß Fig. 1 die Vorgarnspule 1 den gewünschten Füllgrad erreicht hat, werden oberhalb der Bewicklung 15 zwei Windungen zum Fixieren und eine Vorgamreserve auf die Hülse 3 aufgewunden. Die Länge der Vorgarnreserve setzt sich aus drei Teilstücken zusammen

  • eine erste Vorgarnlänge vom oberen Rand A bis zum unteren Rand B des oberen Windungskegels 12,
  • eine zweite Vorgamlänge vom Punkt B bis zum Punkt C, in welchem Bereich eine Schwachstelle erzeugt werden soll und
  • eine dritte Vorgarnlänge vom Punkt C bis zum Punkt D, wobei diese Strecke der Länge entspricht, welche nach dem Trennen an der Pressfingerpritsche 10 verbleiben soll.
After the roving bobbin 1 has reached the desired filling level according to FIG. 1, two windings for fixing and a Vorgam reserve are wound onto the sleeve 3 above the winding 15. The length of the roving reserve is made up of three sections
  • a first roving length from the upper edge A to the lower edge B of the upper cone 12,
  • a second Vorgamlänge from point B to point C, in which area a vulnerability should be created and
  • a third roving length from point C to point D, this distance corresponding to the length which is to remain on the press finger platform 10 after separation.

In einem zweiten Verfahrensschritt wird nach Fig. 2 die Vorgarnreserve von A bis D durch Zurückdrehen der Spule 1 und Absenken der Pressfingerpritsche entlang der Spulenachse wieder abgewickelt. Während das Vorgarn 2 hierbei am unteren Rand des oberen Windungskegels B abrollt, entsteht ein Falschdraht, wodurch die Zahl der Drehungen pro Länge im Teilstück A bis B erhöht und im Teilstück B bis D reduziert wird.In a second process step, the roving reserve of A to D by turning coil 1 back and lowering the press finger platform unwound again along the coil axis. While the roving 2 here on rolls down the lower edge of the upper winding cone B, a false wire is formed, which increases the number of turns per length in section A to B and in section B to D is reduced.

Aus Fig. 2 ist weiterhin erkennbar, dass in einem dritten Verfahrensschritt die Pressfingerpritsche 10 zum Punkt E auf der Vorgarnspule 1 bewegt wird. Die Strecken B-D und B-E sind hierbei gleich lang. Das Vorgarn rollt dabei zwischen der Pressfingerpritsche 10 und der Vorgarnspule 1 ab; als Folge des dabei entstehenden Falschdrahtes wird das Teilstück E bis in die Nähe des Punktes C durch Erhöhen der Anzahl der Drehungen je Länge verfestigt und eine Schwachstelle im Bereich C erzeugt.From Fig. 2 it can also be seen that in a third step Press finger platform 10 is moved to point E on the roving spool 1. The Lines B-D and B-E are of equal length. The roving rolls between the press finger platform 10 and the roving spool 1; as a result of the resulting False wire is the section E through to the vicinity of point C. Increasing the number of twists per length solidified and a weak point generated in area C.

Gemäß Fig. 3 wird die Länge der Strecke D bis E so gewählt, dass genügend Drehungen pro Länge im Teilstück E bis C vorhanden sind.3, the length of the distance D to E is chosen so that sufficient There are rotations per length in section E to C.

Nach Fig. 3 und 4 wird im nächsten Verfahrensschritt die Pressfingerpritsche 10 zum Punkt F auf der Vorgarnspule 1 bewegt. Durch diese Bewegung wird das Vorgarn 2 exakt im Bereich der vorher erzeugten Schwachstelle C getrennt (Fig.4).3 and 4, the press finger platform 10 is in the next step moved to point F on the roving spool 1. With this movement it becomes Roving 2 separated exactly in the area of the previously created weak point C. (Fig.4).

Der Vorteil dieses erfindungsgemäßen Verfahrens besteht unter anderem auch darin, dass die Schwachstelle im Bereich C mit großer Sicherheit in dem vorgenannten Teilstück erzeugt wird und nach dem Trennen des Vorgarns 2 ein Ende mit der gewünschten Länge C-D an der Pressfingerpritsche 10 verbleibt. Hierdurch ergibt sich eine erhebliche Verbesserung des Produktionsablaufes und des selbsttätigen Trennens des Vorgarns 2 beim Abziehen einer Spule 1 an einer Vorspinnmaschine.The advantage of this method according to the invention also exists, among other things in that the vulnerability in area C with high certainty in the aforementioned Part is generated and one end after separating the roving 2 with the desired length C-D remains on the press finger platform 10. hereby there is a significant improvement in the production process and automatic separation of the roving 2 when pulling a bobbin 1 on Roving.

Claims (3)

  1. Method for the automatic separation of roving (2) during the take-up of bobbins (1) on a roving machine with delivery of the roving (2) as far as a press-finger platform (10) and separation of the roving (2) between the press-finger platform (10) and the circumference of the bobbin (1), having the method steps:
    a) the generation of at least one half-turn (6) of the roving (2) as a roving reserve above the winding of the bobbin (1),
    b) the unwinding of the roving reserve by means of the reverse rotation of the bobbin (1) and the lowering of the press-finger platform (10) along the bobbin axis, the roving rolling off at the lower edge of the upper winding cone, at the same time forming a false twist by means of which the twist in the roving (2) in the region (B-D) between the rolling edge and the press-finger platform (10) is reduced,
    c) the movement of the press-finger platform (10) over a distance (D-E) along the bobbin circumference, with the result that the roving (2) is rolled between the press-finger platform and the bobbin circumference and each provided with twist which is propagated into a part-region (E-C) of the region (B-D) of reduced twist,
    d) the pulling and separation of the roving (2) in the region of the reduced twist (B-C) by means of a further lowering of the press-finger platform (10).
  2. Method according to Claim 1, characterized in that the length of the distance (D-E) is selected such that there are sufficient twists per length in the portion (E-C) to prevent a tearing of the roving (2) in this portion.
  3. Method according to Claim 1, characterized in that, during the movement of the press-finger platform (10) from a point (D) to a point (E), the distances (B-D) and (B-E) of the roving are kept to an equal length.
EP01100618A 2000-01-14 2001-01-11 Method for automatically separating rovings during doffing on a roving frame Expired - Lifetime EP1123996B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10001351 2000-01-14
DE10001351A DE10001351A1 (en) 2000-01-14 2000-01-14 Automatic severing of the roving when the wound bobbin is doffed from a roving frame uses a press finger plank with a structured movement to act on the weak point of set roving reserves to give a constant remaining length

Publications (2)

Publication Number Publication Date
EP1123996A1 EP1123996A1 (en) 2001-08-16
EP1123996B1 true EP1123996B1 (en) 2003-12-17

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EP01100618A Expired - Lifetime EP1123996B1 (en) 2000-01-14 2001-01-11 Method for automatically separating rovings during doffing on a roving frame

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US (1) US6418705B2 (en)
EP (1) EP1123996B1 (en)
JP (1) JP2001226837A (en)
DE (2) DE10001351A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7472537B2 (en) * 2006-12-04 2009-01-06 Brunk Kenneth D Flyer and spindle brake assembly for handspinning wheels
CN114717694B (en) * 2022-03-29 2024-01-26 颍上鑫鸿纺织科技有限公司 A device is decided to cotton yarn strip for cotton yarn processing

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE554010A (en)
DE3509338A1 (en) 1985-03-15 1986-09-18 Fritz 7347 Bad Überkingen Stahlecker MAINTENANCE DEVICE MOVABLE ALONG A SPINNING MACHINE WITH A FLUSH COLLAR NEEDLE
DE3931124A1 (en) * 1989-09-18 1991-03-28 Zinser Textilmaschinen Gmbh METHOD AND DEVICE FOR SEPARATING A PRE-YARN BETWEEN THE PRESSING FINGERS ON THE LEAF OF A PRE-STRINGING MACHINE PROVIDED WITH A STRETCHER AND THE FULL PRE-YARN SPOOLS
DE4122810A1 (en) * 1991-07-10 1993-01-14 Zinser Textilmaschinen Gmbh METHOD FOR SEPARATING THE RUNS OF PRE-YARN BOBS MADE ON RASPING MACHINES
US5524428A (en) * 1994-07-05 1996-06-11 Fratelli Marzoli & C. S.P.A. Method and apparatus for separating the roving wound on packages from the flyers of a roving frame or the like, and for securing the roving end to the packages before doffing
FR2722513B1 (en) * 1994-07-13 1996-08-30 Schlumberger Et Cie Sa N PROCESS FOR BREAKING THE WICK FOR AUTOMATIC LIFTING OF THE COILS ON SPINDLE BENCHES AND PRESSING FINGER IMPLEMENTED BY THIS PROCESS
DE19512578C2 (en) * 1995-04-03 1997-04-17 Grosenhainer Textilmaschbau Process for separating roving sliver before removing bobbins on roving machines
DE19631756A1 (en) * 1996-08-06 1998-02-12 Zinser Textilmaschinen Gmbh Severing of sliver at bobbin changing on roving frame
DE19733614A1 (en) 1996-09-03 1998-04-23 Rieter Ag Maschf More efficient multi=use suction tube for a roving drafting frame

Also Published As

Publication number Publication date
DE50101157D1 (en) 2004-01-29
DE10001351A1 (en) 2001-07-19
US20010011451A1 (en) 2001-08-09
EP1123996A1 (en) 2001-08-16
US6418705B2 (en) 2002-07-16
JP2001226837A (en) 2001-08-21

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