EP0128121A1 - Equipement pour l'enlèvement pneumatique du sous-renvidage des cannettes - Google Patents

Equipement pour l'enlèvement pneumatique du sous-renvidage des cannettes Download PDF

Info

Publication number
EP0128121A1
EP0128121A1 EP19840810266 EP84810266A EP0128121A1 EP 0128121 A1 EP0128121 A1 EP 0128121A1 EP 19840810266 EP19840810266 EP 19840810266 EP 84810266 A EP84810266 A EP 84810266A EP 0128121 A1 EP0128121 A1 EP 0128121A1
Authority
EP
European Patent Office
Prior art keywords
openings
lip
nozzle
thread
bobbin
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.)
Withdrawn
Application number
EP19840810266
Other languages
German (de)
English (en)
Inventor
Olivier Wüst
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.)
Maschinenfabrik Scharer AG
Original Assignee
Maschinenfabrik Scharer AG
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 Maschinenfabrik Scharer AG filed Critical Maschinenfabrik Scharer AG
Publication of EP0128121A1 publication Critical patent/EP0128121A1/fr
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H67/00—Replacing or removing cores, receptacles, or completed packages at paying-out, winding, or depositing stations
    • B65H67/08—Automatic end-finding and material-interconnecting arrangements
    • B65H67/081—Automatic end-finding and material-interconnecting arrangements acting after interruption of the winding process, e.g. yarn breakage, yarn cut or package replacement
    • B65H67/085—Automatic end-finding and material-interconnecting arrangements acting after interruption of the winding process, e.g. yarn breakage, yarn cut or package replacement end-finding at the take-up package, e.g. by suction and reverse package rotation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/30—Handled filamentary material
    • B65H2701/31—Textiles threads or artificial strands of filaments

Definitions

  • the present invention relates to a device for pneumatically pulling a thread end from a textile bobbin.
  • the end of the thread must be searched for on the surface of the spool, detached and fed to a knot binder or a splicing device.
  • the bobbin is stopped and turned in the opposite direction to the upwind direction.
  • a negative pressure is generated with which the thread end can be sucked in and pulled off. The thread end can then be connected in a known manner to the end coming from the delivery spool.
  • Suction nozzles with adjustable lips are very complex to manufacture and operate and can damage the thread on the bobbin surface if the adjustment mechanism malfunctions.
  • suction nozzles with a small distance to the bobbin surface can create a high negative pressure in the bobbin surface, but not an air flow that can ultimately entrain the thread end. If, on the other hand, the distance between the nozzle and the bobbin surface is significantly increased, the effective vacuum on the bobbin surface is reduced to such an extent that the thread end cannot be detected either without the vacuum being significantly increased. However, increasing the vacuum is associated with additional costs and is therefore not economical.
  • AT-PS 368 106 describes a thread take-off device in which a first contact roller is rotatably mounted at the mouth of the suction nozzle and on the surface of the bobbin drivable.
  • a second roller designed as a multi-start screw, is drivably mounted parallel to the first roller and adjoining it. Threads once sucked into the nozzle can be intermittently drawn off with the clamping points between the first roller and the worm roller.
  • ventilation slots In order to prevent the rolls from becoming blocked by fluff and from being wrapped with threads, ventilation slots must be provided along the rolls on both sides which open from behind into the gap between the rolls and the walls delimiting them.
  • the suction nozzle is moved radially toward and away from the bobbin surface towards the bobbin surface during the soaking up of the thread end, so that alternately a high vacuum and then a high air flow can again arise at the nozzle mouth.
  • a suction nozzle is known in which an increase in the flow velocity in the suction zone is to be achieved with the aid of compressed air introduced at the nozzle. In fact, an improvement can be achieved with this arrangement, but it incurs prohibitive costs.
  • feed lines have to be brought to each winding unit, which can be controlled individually.
  • a bsaugdüsen means must be installed for introducing the compressed air towards the suction to.
  • the present invention has set itself the task of creating a device which avoids the disadvantages of the known Anddditch and simplest measures low suction air requirement at the nozzle and without additional E infeed of expensive compressed air allows an increase in the flow rate in the mouth of the nozzle.
  • Another object of the invention is to design the device without moving parts and without additional control. Furthermore, the device should be fixed.
  • the air flowing in from the atmosphere at the lip-shaped mouth through the openings provided there causes a substantial increase in the moving air mass from the lips of the mouth to the suction line, as a result of which the thread end, which is initially only raised by the vacuum from the bobbin surface, is captured and drawn into the nozzle.
  • Measurements have shown that the openings do not significantly reduce the impact of the Negative pressure at the mouth can be determined. It has proven particularly advantageous to regularly arrange the openings along the front edge of the mouth.
  • the air entering through the individual openings creates a non-laminar flow and turbulence in the nozzle, which considerably facilitates the detachment of the thread from the bobbin surface.
  • the openings are preferably arranged a few millimeters from the front edge of the lip-shaped mouth, so that a thread end that is only slightly raised by the negative pressure from the bobbin surface can be gripped and carried away.
  • the air inlet openings are preferably omitted or covered in the area of the lip opposite the thread removal opening.
  • FIG. 1 and 2 show a textile bobbin 1 for winding a thread 2 (shown in dash-dotted line), a delivery bobbin 14 and a suction device 3. All parts that are not essential to the invention, such as the spool drive, the knotting device, the machine frame, etc., have been omitted.
  • the coil 1 is rotatably attached to an arm 4 which can be pivoted about an axis and is either driven directly by a drive in the arm 4 or set in rotation by a friction roller resting on the surface of the coil (arrow A).
  • the suction device or nozzle 3 is seated with a lip 8 which ends in a slot-like manner and forms a slot 3 in the gap 9.
  • the gap 9 is delimited by the two lips 10 and 11 and only a few millimeters wide.
  • the lower lip 10 can protrude slightly from the upper lip 11, so that both lips 10 and 11 have the same distance d from the coil surface on average. A slight change in the distances cannot be avoided in the case of a fixedly arranged nozzle 3, since when the coil 1 is built up, its surface gradually shifts relative to the lip 10, 11.
  • the distance d of the lips 10, 11 from the bobbin surface is defined in such a way that there can be no contact with the threads 2 on the bobbin 1.
  • the continuous change in the distance d has no influence in the embodiment of the nozzle 3 according to the invention, because through a number of openings 13 provided along the front edge of the lip 11, air can enter the nozzle 3 from the atmosphere. occur and generate an air flow (moving air mass), which is essentially independent of the distance d to the upper coil surface.
  • the openings 13 can have a round, oval or rectangular cross section. This is about 1.5 to 12 mm.
  • the distance c of the openings 13, 13 'from the front edge can be between 1 mm and 20 mm. In a preferred embodiment, the cross section of the openings is 7 mm 2 and the distance c is 10 mm.
  • the bobbin 1 If the thread breaks or before the thread of a new delivery bobbin 14 is attached to the thread end 2 'of the thread 2 wound on the bobbin 1, the bobbin 1 is stopped and rotated in the direction of the arrows B in the opposite direction to the winding direction A, by a thread end which is long enough for the piecing process , e.g. 0.5 m, from the spool 1. So that the end 2 ', which is generally strongly adhering to the coil surface, can be found and detached, the suction source is switched on and a negative pressure is built up in the nozzle 3 and propagates through the mouth 8 to the coil surface. Due to the negative pressure, air is sucked in from the environment through the gap 9 between the lips 10 and 11.
  • the air entering through the openings 13 along the gap 9 increases the flowing air volume behind the gap 9 towards the suction.
  • the division of the air inlet into a plurality of openings 13 causes turbulence in the flow, which abruptly engages the thread end 2 ', which runs past the mouth 8 transversely to the gap 9, and thereby promotes the detachment of the thread end 2' or the thread 2 .
  • the thread end 2 ' is automatically knotted with the delivery thread end, e.g. With a device according to DE-AS No. 17 85 293, in which the nozzle and the suction line have a closable slot on the underside for leading out the drawn-off thread end 2 ', there is preferably no air inlet opening on the lip 11 in the area above the slot provided or this is covered.
  • openings 13 can also on the lip lo, i.e. be attached to the underside of the nozzle 3 or to both lips 10 and 11.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Replacing, Conveying, And Pick-Finding For Filamentary Materials (AREA)
EP19840810266 1983-06-03 1984-05-29 Equipement pour l'enlèvement pneumatique du sous-renvidage des cannettes Withdrawn EP0128121A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH3054/83 1983-06-03
CH305483 1983-06-03

Publications (1)

Publication Number Publication Date
EP0128121A1 true EP0128121A1 (fr) 1984-12-12

Family

ID=4247576

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19840810266 Withdrawn EP0128121A1 (fr) 1983-06-03 1984-05-29 Equipement pour l'enlèvement pneumatique du sous-renvidage des cannettes

Country Status (1)

Country Link
EP (1) EP0128121A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0360287A1 (fr) * 1988-09-23 1990-03-28 Maschinenfabrik Rieter Ag Station pour la préparation de canettes
EP0365472A1 (fr) * 1988-10-19 1990-04-25 GebràœDer Sulzer Aktiengesellschaft Dispositif pour enfiler un fil dans un métier à tisser
EP2824054A1 (fr) 2013-07-11 2015-01-14 Saurer Germany GmbH & Co. KG Poste de travail d'une machine textile fabriquant des bobines croisées
EP3124413A1 (fr) 2015-07-31 2017-02-01 Rieter Ingolstadt GmbH Procede d'une machine textile et machine textile
CN110023219A (zh) * 2016-11-30 2019-07-16 里特机械公司 在制造或处理纱线的纺织机中检测筒管上的纱线端部的方法及执行该方法的装置
EP3753885A1 (fr) * 2019-06-19 2020-12-23 Heberlein AG Appareil d'aspiration pour une machine textile, machine textile dotée d'un dispositif d'aspiration, utilisation de deux éléments de cyclone et procédé d'aspiration de fils

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH554803A (de) * 1972-03-04 1974-10-15 Zinser Textilmaschinen Gmbh Einrichtung zum abnehmen von auf fadenwicklungskoerpern befindlichen fadenenden.
DE2908731B1 (de) * 1979-03-06 1980-07-10 Mayer Fa Karl Vorrichtung zum Absaugen des Fadenendes von einer Spule bei Spulmaschinen
DE3206478A1 (de) * 1981-07-24 1983-02-10 Maschinenfabrik Schweiter AG, 8810 Horgen Vorrichtung zum abziehen von garnenden an textilspulen

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH554803A (de) * 1972-03-04 1974-10-15 Zinser Textilmaschinen Gmbh Einrichtung zum abnehmen von auf fadenwicklungskoerpern befindlichen fadenenden.
DE2908731B1 (de) * 1979-03-06 1980-07-10 Mayer Fa Karl Vorrichtung zum Absaugen des Fadenendes von einer Spule bei Spulmaschinen
DE3206478A1 (de) * 1981-07-24 1983-02-10 Maschinenfabrik Schweiter AG, 8810 Horgen Vorrichtung zum abziehen von garnenden an textilspulen

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5058816A (en) * 1988-09-23 1991-10-22 Maschinenfabrik Rieter Ag Cops preparation station
EP0360287A1 (fr) * 1988-09-23 1990-03-28 Maschinenfabrik Rieter Ag Station pour la préparation de canettes
EP0365472A1 (fr) * 1988-10-19 1990-04-25 GebràœDer Sulzer Aktiengesellschaft Dispositif pour enfiler un fil dans un métier à tisser
US5012844A (en) * 1988-10-19 1991-05-07 Sulzer Brothers Limited Weft yarn threading device for a jet loom
EP2824054A1 (fr) 2013-07-11 2015-01-14 Saurer Germany GmbH & Co. KG Poste de travail d'une machine textile fabriquant des bobines croisées
DE102013011664A1 (de) 2013-07-11 2015-01-15 Saurer Germany Gmbh & Co. Kg Arbeitsstelle einer Kreuzspulen herstellenden Textilmaschine
US10384908B2 (en) 2015-07-31 2019-08-20 Rieter Ingolstadt Gmbh Method for a textile machine, and a textile machine
EP3124413A1 (fr) 2015-07-31 2017-02-01 Rieter Ingolstadt GmbH Procede d'une machine textile et machine textile
DE102015112661A1 (de) 2015-07-31 2017-02-02 Rieter Ingolstadt Gmbh Verfahren an einer Textilmaschine und Textilmaschine
CN110023219A (zh) * 2016-11-30 2019-07-16 里特机械公司 在制造或处理纱线的纺织机中检测筒管上的纱线端部的方法及执行该方法的装置
CN110023219B (zh) * 2016-11-30 2021-06-15 里特机械公司 在纺织机中检测旋转的筒管上的纱线端部的方法及装置
EP3753885A1 (fr) * 2019-06-19 2020-12-23 Heberlein AG Appareil d'aspiration pour une machine textile, machine textile dotée d'un dispositif d'aspiration, utilisation de deux éléments de cyclone et procédé d'aspiration de fils
WO2020254015A1 (fr) * 2019-06-19 2020-12-24 Heberlein Ag Dispositif d'aspiration conçu pour une machine textile, machine textile équipée d'un dispositif d'aspiration, utilisation de deux éléments cycloniques et procédé d'aspiration de fils
CN113993803A (zh) * 2019-06-19 2022-01-28 希伯莱因股份公司 用于纺织机械的抽吸装置、带抽吸装置的纺织机械、两个旋风元件的应用以及用于抽吸纱线的方法
CN113993803B (zh) * 2019-06-19 2023-12-12 希伯莱因股份公司 用于纺织机械的抽吸装置、带抽吸装置的纺织机械、两个旋风元件的应用以及用于抽吸纱线的方法
US12091279B2 (en) 2019-06-19 2024-09-17 Heberlein Technology Ag Suction device for a textile machine, textile machine with a suction device, use of two cyclone elements, and method for suctioning yarns

Similar Documents

Publication Publication Date Title
DE3808957C2 (fr)
EP0374405A1 (fr) Dispositif d'alimentation en fil pour bobinoir automatique
DE2939644C2 (de) Verfahren und Vorrichtung zur Beseitigung einer Unregelmäßigkeit am laufenden Faden an einer Offenend-Spinnstelle während des Spinnens
DE2620806C2 (de) Verfahren zum Übergeben eines laufenden Fadens von einer Anspinnvorrichtung an ein Spinnaggregat
DE2648621B2 (de) Doppeldraht-Zwirnmaschine
EP3276057A1 (fr) Unité guide-fil, métier à tisser à extrémité ouverte et procédé de fonctionnement d'un poste de filage
EP0365472B1 (fr) Dispositif pour enfiler un fil dans un métier à tisser
EP0289009A1 (fr) Procédé et dispositif pour la surveillance et le maintien d'une qualité de fil prédéterminée
EP0128121A1 (fr) Equipement pour l'enlèvement pneumatique du sous-renvidage des cannettes
EP0162367A1 (fr) Procédé et dispositif pour la préparation de l'extrémité de fil pour la remise en route d'une machine à bout libéré
EP0230974A2 (fr) Dispositif de tirage de fil
DE3121759A1 (de) Fliegend gelagerte drehbare zentrierspindel
CH623014A5 (fr)
DE2455913C3 (de) Kopswechselvorrichtung
DE4009170C2 (de) Spulaggregat eines Spulautomaten
DE3206478C2 (de) Vorrichtung zum Abziehen eines Garnendes an rotierenden Textilspulen
DE974891C (de) Vorrichtung zum Absaugen von Flug an Spulmaschinen
DE3874505T2 (de) Vorrichtung zum aufsuchen eines gerissenen fadenendes auf einer im aufbau befindlichen fadenwicklung.
DE2544652C2 (de) Wartungsvorrichtung für Doppeldrahtzwirnmaschinen
EP0595035A1 (fr) Dispositif de sectionnement pour extrémités de fils traînants sur les bobines textiles
DE3407339A1 (de) Friktionsspinnvorrichtung
CH682573A5 (de) Vorrichtung zum Entfernen eines fehlerhaften Schussfadens an einer Luftdüsenwebmaschine.
EP2280103B1 (fr) Dispositif de nettoyage pour métiers à tisser
DE3828768C2 (de) Verfahren und Vorrichtung zur Herstellung eines Kern-Mantel-Garnes
CH682912A5 (de) Vorrichtung zum Zuführen von Faserbändern zu einer textilverarbeitenden Maschine.

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): CH DE FR GB IT LI

17P Request for examination filed

Effective date: 19850219

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19860121

RIN1 Information on inventor provided before grant (corrected)

Inventor name: WUEST, OLIVIER