EP0660889B1 - 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 PDFInfo
- Publication number
- EP0660889B1 EP0660889B1 EP93919028A EP93919028A EP0660889B1 EP 0660889 B1 EP0660889 B1 EP 0660889B1 EP 93919028 A EP93919028 A EP 93919028A EP 93919028 A EP93919028 A EP 93919028A EP 0660889 B1 EP0660889 B1 EP 0660889B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- roving
- bobbins
- rovings
- drawing out
- flyer
- 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
Links
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 yarns when stripping bobbins on 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 outer Umkenrhous and the separation process should be done with an additional stroke when the machine is stopped.
- a sensitive area of the coil namely the name of the reversal point, is selected as the stopping point.
- a further disadvantage is a special requirement for the design of the press finger, which is intended to prevent threading out of the press finger eye during the bobbin carriage movements.
- An additional separation stroke is also necessary to tear the roving slats. 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 roving machine is controlled from the spinning process in such a way that the press finger moves out of the winding stroke of the last layer, regardless of whether the upper or lower bobbin cone.
- the spool is now wound outside the winding stroke and the machine is only stopped at this time.
- 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.
- a roving end is present in the wing and press finger, which is suitable for automatic piecing.
- 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.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Spinning Or Twisting Of Yarns (AREA)
Abstract
Description
Die Erfindung betrifft ein Verfahren zum Trennen von Vorgarnlunten beim Abzienen von Spulen an Vorspinnmaschinen und ist im Gebiet der Spinnerei, insbesondere der Vorgarnherstellung einsetzbar.The invention relates to a method for separating roving yarns when stripping bobbins on roving machines and can be used in the field of spinning, in particular roving manufacture.
An einer Vorspinnmaschine ist es notwendig, nach dem Bewikkeln 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 winding the tubes into a bobbin when a certain bobbin diameter has been reached or after winding up the specified length of roving sliver.
Dieser Vorgang erfolgt klassisch von Hand und ist seit der Entwicklung von automatisierten Anlagen vollautomatisch. In einigen Verarbeitungsbereichen, insbesondere der Langstapelfaserverarbeitung, ist das selbständige Trennen der Vorgarnlunten nicht zur Zufriedenheit gelöst.This process is traditionally done by hand and has been fully automated since the development of automated systems. In some processing areas, especially long staple fiber processing, the independent separation of the roving slivers has not been satisfactorily resolved.
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 Vorgarnlunten selbständig getrennt werden sollen.From DE 3931124 C2 a method is known in which the machine is to be stopped at the upper cone in the vicinity of the reversal point and the roving lines are 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 ooeren Umkenrpunktes angehalten werden muß und der Trennvorgang bei stehender Maschine durch einen Zusatzhub erfolgen soll.A disadvantage of this method is that the machine must be stopped in the vicinity of the outer Umkenrpunktes and the separation process should be done with an additional stroke when the machine is stopped.
Hier wird ein sensibler Bereich der Spule, nämlich die Näne des Umkehrpunktes, als Anhaltepunkt gewählt.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 besondere Forderung an die Gestaltung des Preßfingers gestellt, die ein Aufädeln des Fadens aus dem Preßfingerauge bei den Spulen-Wagenbewegungen verhindern soll. Ebenfalls ist ein zusätzlicher Trennhub notwendig, um die Vorgarnlunten zu zerreißen. Dafür wird Zeit benötigt, da insbesondere im Langstapelbereich dieser Weg lang ist.A further disadvantage is a special requirement for the design of the press finger, which is intended to prevent threading out of the press finger eye during the bobbin carriage movements. An additional separation stroke is also necessary to tear the roving slats. 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.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.
Erfindungsgemäß wird die Aufgabe dadurch gelöst, daß die Vorspinnmaschine aus dem Spinnprozeß heraus so gesteuert wird, daß der Preßfinger aus dem Bewicklungshub der letzten Lage fährt, unabhängig ob oberer oder unterer Spulenkegel.According to the invention the object is achieved in that the roving machine is controlled from the spinning process in such a way that the press finger moves out of the winding stroke of the last layer, regardless of whether the upper or lower bobbin cone.
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.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 Bewicklungshubes umwunden und erst zu diesem Zeitpunkt wird die Maschine stillgesetzt.The spool is now wound outside the winding stroke and the machine is only stopped at this time.
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.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 der erhöhten Drehung muß am Flügelausgang vorhanden sein, da sonst der 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 übergangs normale Drehung und erhöhte Drehung, wenn die Fadenspannung herausgenommen wurde.Relaxing the fuse is particularly important for the success of the separation. The beginning of the increased rotation must be present at the wing exit, otherwise the thread in the wing and not at the exit of the wing breaks. This point can only be secured by turning back the spool, because the distances between the front and rear rows of spools are different. The thread breaks only at the point of transition normal rotation and increased rotation when the thread tension is removed.
Im Ergebnis dieses Verfahrens ist ein Vorgarnende im Flügel und Preßfinger vorhanden, welches sich zum automatiscnen Anspinnen eignet. Die erhöhte Drehung kann vor dem Anspinnen durch kurzzeitige Änderung der Drehrichtung oder der Verringerung der Drehzahl der Flügel eliminiert werden.As a result of this process, a roving end is present in the wing and press finger, which is suitable for automatic 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.
Claims (1)
- Method for separating rovings when removing bobbins at roving frames, characterized in- moving out the spring-finger from the yarn winding traverse of the last layer and increasing the twist of the roving and conveying the compacted roving into the flyer, while the transportation of the yarn is not interrupted- slackening the roving between bobbin and flyer exit by rewinding the bobbins- carrying the bobbin rail into take-down position.
Applications Claiming Priority (3)
| 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 |
| DE4231887 | 1992-09-21 | ||
| PCT/DE1993/000903 WO1994006955A1 (en) | 1992-09-21 | 1993-09-21 | Process for cutting rovings when drawing out bobbins from roving frames |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0660889A1 EP0660889A1 (en) | 1995-07-05 |
| EP0660889B1 true EP0660889B1 (en) | 1997-01-08 |
Family
ID=6468656
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP93919028A Expired - Lifetime EP0660889B1 (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)
| 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 |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51102128A (en) * | 1975-03-05 | 1976-09-09 | Toyoda Automatic Loom Works | Sobokini okeru tamaagejino soshimakikishirino setsudanhoho oyobi sonosochi |
| DD217832B3 (en) * | 1983-06-09 | 1991-03-28 | Grossenhainer Textilmaschinenbau Gmbh,De | PRE-SPILL MACHINE WITH DECENTRAL DRIVE |
| JP2526929B2 (en) * | 1987-10-06 | 1996-08-21 | 株式会社豊田自動織機製作所 | Method and device for cutting roving winding tail at doffing on roving machine |
| JPH089812B2 (en) * | 1987-10-08 | 1996-01-31 | 株式会社豊田自動織機製作所 | Cutting method of roving tail of roving machine in roving machine |
| 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 |
| 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 |
| IT1242977B (en) * | 1990-07-17 | 1994-05-18 | Marzoli & C Spa | PROCEDURE AND EQUIPMENT FOR SEPARATING THE WOVEN WRAPPED ON THE SPOOLS FROM THE FLAPS AND STOP THE HEAD OF THE SPOOL ON THE SPOOLS AT THE LEVERAGE IN A SPINDLE BENCH OR SIMILAR |
| 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 |
| DE4122810A1 (en) * | 1991-07-10 | 1993-01-14 | Zinser Textilmaschinen Gmbh | METHOD FOR SEPARATING THE RUNS OF PRE-YARN BOBS MADE ON RASPING MACHINES |
-
1992
- 1992-09-21 DE DE4231887A patent/DE4231887C2/en not_active Expired - Fee Related
-
1993
- 1993-09-21 EP EP93919028A patent/EP0660889B1/en not_active Expired - Lifetime
- 1993-09-21 JP JP6507703A patent/JPH08501353A/en active Pending
- 1993-09-21 CN CN93118146A patent/CN1086555A/en active Pending
- 1993-09-21 DE DE59305090T patent/DE59305090D1/en not_active Expired - Fee Related
- 1993-09-21 WO PCT/DE1993/000903 patent/WO1994006955A1/en active IP Right Grant
Also Published As
| Publication number | Publication date |
|---|---|
| CN1086555A (en) | 1994-05-11 |
| JPH08501353A (en) | 1996-02-13 |
| EP0660889A1 (en) | 1995-07-05 |
| DE4231887A1 (en) | 1994-03-24 |
| WO1994006955A1 (en) | 1994-03-31 |
| DE4231887C2 (en) | 1997-06-19 |
| DE59305090D1 (en) | 1997-02-20 |
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