WO1994006955A1 - Process for cutting rovings when drawing out bobbins from roving frames - Google Patents

Process for cutting rovings when drawing out bobbins from roving frames Download PDF

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Publication number
WO1994006955A1
WO1994006955A1 PCT/DE1993/000903 DE9300903W WO9406955A1 WO 1994006955 A1 WO1994006955 A1 WO 1994006955A1 DE 9300903 W DE9300903 W DE 9300903W WO 9406955 A1 WO9406955 A1 WO 9406955A1
Authority
WO
WIPO (PCT)
Prior art keywords
roving
bobbins
rovings
drawing out
moved
Prior art date
Application number
PCT/DE1993/000903
Other languages
German (de)
French (fr)
Inventor
Hans-Jürgen Schönfelder
Joachim Schneider
Gerhard Laux
Hansgünter MENZEL
Original Assignee
Grossenhainer Textilmaschinenbau Gmbh
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Grossenhainer Textilmaschinenbau Gmbh filed Critical Grossenhainer Textilmaschinenbau Gmbh
Priority to EP93919028A priority Critical patent/EP0660889B1/en
Priority to DE59305090T priority patent/DE59305090D1/en
Priority to JP6507703A priority patent/JPH08501353A/en
Publication of WO1994006955A1 publication Critical patent/WO1994006955A1/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
    • D01H9/16—Yarn-severing arrangements, e.g. for cutting transfer tails; Separating of roving in flyer

Definitions

  • the invention relates to a method for separating roving slags when removing bobbins from roving machines and can be used in the field of spinning, in particular roving manufacture.
  • a disadvantage of this method is that the machine must be stopped in the vicinity of the upper reversal point and the separation process should be carried out with an additional stroke when the machine is at a standstill.
  • a sensitive area of the coil namely the name of the reversal point, is selected as the stopping point.
  • a further disadvantage is the special requirement placed on the design of the press finger, which is intended to prevent the thread from being pulled out of the press finger eye during the bobbin carriage movements.
  • An additional separating stroke is also necessary to tear the roving lines. This takes time because this path is long, especially in the long stack area.
  • the present invention is therefore based on the object when pulling bobbins to separate the roving from the running machine, to make no additional demands on components such as wings, press fingers, etc. and to bring about the shortest possible separation.
  • the object is achieved in that the pre-spinning machine is controlled from the spinning process so that the press finger from the winding stroke of the last
  • the coil is now wound outside of the winding stroke and only then is the machine stopped.
  • the roving between bobbin and press finger is relaxed.
  • the bobbin wagon moves directly to the trigger position. In this way, the roving sliver is torn independently.
  • the relaxation of the fuse is particularly important for the success of the separation.
  • the beginning or increased rotation must be present at the wing exit, otherwise the thread breaks in the wing and not at the exit of the wing. This point can only be secured by turning the spool back, because the paths between the front and rear rows of spools are of different lengths.
  • the thread breaks normal rotation and increased rotation only at the point of transition when the thread tension is removed.
  • the increased rotation can be eliminated prior to piecing by briefly changing the direction of rotation or reducing the speed of the blades.
  • the sequence can be easily programmed into machines with appropriate control devices, preferably with freely programmable control devices.

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

Abstract

A process for cutting rovings when drawing out bobbins from roving frames is useful in the spinning industry, in particular for producing rovings. The rovings are cut without interrupting thread supply, the pressing finger is moved out of the winding stroke of the last layer, the roving is rotated more rapidly and the consolidated roving is moved into the flyer. The roving is slackened by turning backwards the bobbins and the bobbin rail moved into the drawing out position. When the disclosed process is used, the roving is torn at the exit of the flyer and an automatic spinning can be started without changing known components of the machine.

Description

Verfahren zum Trennen von Vorgarnlunten oeim Abzieneπ von Spulen an Vorspinnmaschinen  Process for separating roving sliver or reel from reels on roving machines
Technisches Gebiet Technical field
Die Erfindung betrifft ein Verfahren zum Trennen von Vorgarnlunten beim Abziehen von Spulen an Vorspinnmaschinen und ist im Gebiet der Spinnerei, insbesondere der Vorgarnherstsl-lung einsetzbar.  The invention relates to a method for separating roving slags when removing bobbins from roving machines and can be used in the field of spinning, in particular roving manufacture.
An einer Vorspinnmaschine ist es notwendig, nach dem Bewikkein der Hülsen zu einer Spule bei Erreichen eines bestimmten Spulendurchmessers bzw. nach dem Aufwickeln der vorgegebenen Vorgarnluntenlänge die vollen Spulen gegen leere Hülsen auszutauschen. On a roving machine, it is necessary to replace the full bobbins with empty bobbins after the sleeves have become a bobbin when a certain bobbin diameter has been reached or after winding up the specified length of roving sliver.
Stand der Technik State of the art
Dieser Vorgang erfolgt klassisch von Hand und ist seit der Entwicklung von automatisierten Anlagen vollautomatisch.  This process is traditionally done by hand and has been fully automated since the development of automated systems.
In einigen Vsrarbeitungsbereichen, insbesondere der Langstapelfaserverarbeitung, ist das selbständige Trennen der Vorgarnlunten nicht zur Zufriedenheit gelöst. In some processing areas, especially long staple fiber processing, the independent separation of the roving slats has not been solved to satisfaction.
Aus der DE 3931124 C2 ist ein Verfahren bekannt» bei dem am oberen Kegel in Nähe des Umkehrpunktes die Maschine gestoppt und durch Relativbewegung der Flügel und Spulen sowie durch einen zusätzlichen Trennhub des Spulenwagens die Vorgarnl unten selbständig getrennt werden sollen. From DE 3931124 C2 a method is known in which the machine is to be stopped independently at the upper cone in the vicinity of the reversal point and the roving is to be separated independently by relative movement of the wings and bobbins and by an additional separation stroke of the bobbin carriage.
Nachteilig bei diesem Verfahren ist, daß die Maschine in der Nähe des oberen Umkehrpunktes angehalten werden muß und der Trennvorgang bei stehender Maschine durch einen Zusatzhub erfolgen soll. Hier wird ein sensibler Bereich der Spule, nämlich die Näne des Umkehrpunktes, als Anhaltepunkt gewählt. A disadvantage of this method is that the machine must be stopped in the vicinity of the upper reversal point and the separation process should be carried out with an additional stroke when the machine is at a standstill. Here a sensitive area of the coil, namely the name of the reversal point, is selected as the stopping point.
Damit tritt eine Gefährdung der Spulenform auf, weil Lagen abrutschen können. Bei allen Maschinen gibt es Sicherheitseinrichtungen, die diesen Bereich besonders schützen und ein Anhalten der Maschine in diesem Bereich verhindern.  This poses a risk to the coil form because layers can slide off. All machines have safety devices that protect this area and prevent the machine from stopping in this area.
Weiterhin nachteilig ist eine oesondere Forderung an die Gestaltung αes Preßfingers gestellt, die ein Ausfädeln des Fadens aus dem Preßfingerauge bei den Spulen-Wagenbewegungen verhindern soll. Ebenfalls ist ein zusätzlicher Trenn- hub notwendig, um die Vorgarnlunten zu zerreißen. Dafür wird Zeit benötigt, da insbesonflere im Langstapelbereich dieser Weg lang ist.  A further disadvantage is the special requirement placed on the design of the press finger, which is intended to prevent the thread from being pulled out of the press finger eye during the bobbin carriage movements. An additional separating stroke is also necessary to tear the roving lines. This takes time because this path is long, especially in the long stack area.
Der vorliegenden Erfindung liegt daher die Aufgabe zugrunde, beim Abziehen von Spulen die Trennung des Vorgarnes aus der laufenden Maschine heraus zu vollziehen, keine Zusatzanforderungen an Bauteile wie Flügel, Preßfinger usw. zu stellen und auf kürzestem Weg die Trennung herbeizuführen. Darstellung der Erfindung The present invention is therefore based on the object when pulling bobbins to separate the roving from the running machine, to make no additional demands on components such as wings, press fingers, etc. and to bring about the shortest possible separation. Presentation of the invention
Erfindungsgemäß wird die Aufgabe dadurch gelöst, daß die Vorspinnmaschine aus dem Spinnprozeß heraus so gesteuert wird, daß der Preßfinger aus dem Bewicklungshub der letzten  According to the invention the object is achieved in that the pre-spinning machine is controlled from the spinning process so that the press finger from the winding stroke of the last
Lage fährt, unabhängig ob oberer oder unterer Spulenkegel. Es erfolgt eine Erhöhung der Drehung der Vorgarnlunte im Spinnprozeß und es wird mit der durch erhöhte Drehung erreichten Festigkeit noch so viel Vorgarnlunte erzeugt, daß sich dieses verfestigte Vorgarn noch im Flügel befindet. The position moves, regardless of whether the upper or lower coil taper. There is an increase in the rotation of the roving sliver in the spinning process and so much roving sliver is produced with the strength achieved by increased rotation that this solidified roving is still in the wing.
Die Spule wird nunmehr außerhalb des Bewickϊungshubes umwunden und erst zu diesem Zeitpunkt wird die Maschine stillgesetzt. Durch ein kurzes Zurückdrehen der Spule erfolgt ein Entspannen des Vorgarns zwischen Spule und Preßfinger. Der Spulenwagen fährt direkt in die Abzugstellung. Auf diesem Wege erfolgt das selbständige Zerreißen der Vorgarnlunte. The coil is now wound outside of the winding stroke and only then is the machine stopped. By briefly turning back the bobbin, the roving between bobbin and press finger is relaxed. The bobbin wagon moves directly to the trigger position. In this way, the roving sliver is torn independently.
Besondere Bedeutung für den Erfolg der Trennung hat dabei das Entspannen der Lunte. Der Beginn oer erhöhten Drehung muß am Flügel ausgang vorhanden sein, da sonst ύer Faden im Flügel und nicht am Ausgang des Flügels reißt. Diese Stelle ist nur durch Zurückdrehen der Spule zu sichern, denn die Wege zwischen den vorderen und hinteren Spulenreihen sind unterschiedlich lang. Der Faden reißt nur an der Stelle des öbergangs normale Drehung und erhöhte Drehung, wenn die Faden-Spannung herausgenommen wurde.  The relaxation of the fuse is particularly important for the success of the separation. The beginning or increased rotation must be present at the wing exit, otherwise the thread breaks in the wing and not at the exit of the wing. This point can only be secured by turning the spool back, because the paths between the front and rear rows of spools are of different lengths. The thread breaks normal rotation and increased rotation only at the point of transition when the thread tension is removed.
Im Ergebnis dieses Verfahrens ist ein Vαrgarnende im Flügel und Preßfinger vorhanden, welches sich zum automatiscnenAs a result of this process, there is a yarn end in the wing and press finger, which can be used for automatic processing
Anspinnen eignet. Die erhöhte Drehung kann vor dem Anspinnen durch kurzzeitige Änderung der Drehrichtung oder der Verringerung der Drehzahl der Flügel eliminiert werden. Suitable for piecing. The increased rotation can be eliminated prior to piecing by briefly changing the direction of rotation or reducing the speed of the blades.
Durch die Anwendung des erfindungsgemäßen Verfahrens ist es nicht notwendig, Veränderungen an bekannten Bauteilen vorzunehmen. Der Ablauf ist ohne weiteres in Maschinen mit entsprechenden Steuereinrichtungen, vorzugsweise mit frei programmierbaren Steuereinrichtungen, einprogrammierbar. By using the method according to the invention, it is not necessary to make changes to known components. The sequence can be easily programmed into machines with appropriate control devices, preferably with freely programmable control devices.
Patentanspruch Claim
Verfahren zum Trennen von Vorgarnlunuten beim Abziehen von Spulen an Vorspinnmaschinen dadurch gekennzeichnet A method for separating roving slits when pulling bobbins on roving machines characterized
- daß bei nicht unterbrochener Fadenförderung der Preßfinger aus dem Bewicklungshub der letzten Lage herausgefahren und die Drehung der Vorgarnlunte erhöht und die verfestigte Vorgarnlunte in den Flügel gefördert wird - That when the thread conveyance is not interrupted, the press finger moves out of the winding stroke of the last layer and the rotation of the roving sliver increases and the solidified roving slub is conveyed into the wing
- daß durch Zurückdrehen der Spulen die Vorgarnlunte zwischen Spule und Flügelausgang entspannt wird - That the roving thread between the bobbin and the wing exit is relaxed by turning back the bobbins
- daß der Spulenwagen in Abzugsstellung gefahren wird. - That the bobbin wagon is moved to the trigger position.
PCT/DE1993/000903 1992-09-21 1993-09-21 Process for cutting rovings when drawing out bobbins from roving frames WO1994006955A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP93919028A EP0660889B1 (en) 1992-09-21 1993-09-21 Process for cutting rovings when drawing out bobbins from roving frames
DE59305090T DE59305090D1 (en) 1992-09-21 1993-09-21 METHOD FOR SEPARATING PRE-YARN LUNNING WHEN REMOVING COILS FROM PRE-WINDING MACHINES
JP6507703A JPH08501353A (en) 1992-09-21 1993-09-21 Method of cutting roving when removing bobbin in roving machine

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4231887A DE4231887C2 (en) 1992-09-21 1992-09-21 Process for separating roving when removing bobbins on roving machines
DEP4231887.4 1992-09-21

Publications (1)

Publication Number Publication Date
WO1994006955A1 true WO1994006955A1 (en) 1994-03-31

Family

ID=6468656

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE1993/000903 WO1994006955A1 (en) 1992-09-21 1993-09-21 Process for cutting rovings when drawing out bobbins from roving frames

Country Status (5)

Country Link
EP (1) EP0660889B1 (en)
JP (1) JPH08501353A (en)
CN (1) CN1086555A (en)
DE (2) DE4231887C2 (en)
WO (1) WO1994006955A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19512578C2 (en) * 1995-04-03 1997-04-17 Grosenhainer Textilmaschbau Process for separating roving sliver before removing bobbins on roving machines

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2303104A1 (en) * 1975-03-05 1976-10-01 Toyoda Automatic Loom Works PROCEDURE AND DEVICE FOR SECTIONING A BIT AT THE TIME OF LIFTING IN A CONTINUOUS TRADE WITH FINS
JPH0197226A (en) * 1987-10-08 1989-04-14 Toyota Autom Loom Works Ltd Cutting of curled end of roving in doffing in roving frame
JPH0197225A (en) * 1987-10-06 1989-04-14 Toyota Autom Loom Works Ltd Cutting of curled end of roving in doffing in roving frame and system therefore
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
EP0467475A1 (en) * 1990-07-17 1992-01-22 FRATELLI MARZOLI & C. S.p.A. Method and apparatus for separating from flyers the roving wound onto cops and securing the end of the roving on the cops at the time of removal in a fly frame or similar machine
FR2665188A1 (en) * 1990-07-24 1992-01-31 Schlumberger Cie N Method for breaking the roving for the purpose of the automatic removal and transport of the spindle-rail bobbins
EP0522255A1 (en) * 1991-07-10 1993-01-13 Zinser Textilmaschinen GmbH Method of severing the rovings on roving bobbins produced on roving frames

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD217832B3 (en) * 1983-06-09 1991-03-28 Grossenhainer Textilmaschinenbau Gmbh,De PRE-SPILL MACHINE WITH DECENTRAL DRIVE
FR2649727B1 (en) * 1989-07-17 1991-10-04 Schlumberger Cie N METHOD OF BREAKING THE BIT TO BE ABLE TO AUTOMATICALLY LIFE THE FULL COILS ON A LONG FIBER SPINDLE BENCH

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2303104A1 (en) * 1975-03-05 1976-10-01 Toyoda Automatic Loom Works PROCEDURE AND DEVICE FOR SECTIONING A BIT AT THE TIME OF LIFTING IN A CONTINUOUS TRADE WITH FINS
JPH0197225A (en) * 1987-10-06 1989-04-14 Toyota Autom Loom Works Ltd Cutting of curled end of roving in doffing in roving frame and system therefore
JPH0197226A (en) * 1987-10-08 1989-04-14 Toyota Autom Loom Works Ltd Cutting of curled end of roving in doffing in roving frame
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
EP0467475A1 (en) * 1990-07-17 1992-01-22 FRATELLI MARZOLI & C. S.p.A. Method and apparatus for separating from flyers the roving wound onto cops and securing the end of the roving on the cops at the time of removal in a fly frame or similar machine
FR2665188A1 (en) * 1990-07-24 1992-01-31 Schlumberger Cie N Method for breaking the roving for the purpose of the automatic removal and transport of the spindle-rail bobbins
EP0522255A1 (en) * 1991-07-10 1993-01-13 Zinser Textilmaschinen GmbH Method of severing the rovings on roving bobbins produced on roving frames

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 013, no. 313 (C - 618)<3661> 17 July 1989 (1989-07-17) *
See also references of EP0660889A1 *

Also Published As

Publication number Publication date
DE4231887A1 (en) 1994-03-24
EP0660889B1 (en) 1997-01-08
JPH08501353A (en) 1996-02-13
DE59305090D1 (en) 1997-02-20
DE4231887C2 (en) 1997-06-19
EP0660889A1 (en) 1995-07-05
CN1086555A (en) 1994-05-11

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