EP0223422B1 - Auflösevorrichtung für ein Faserband an einer Offenend-Spinneinheit - Google Patents

Auflösevorrichtung für ein Faserband an einer Offenend-Spinneinheit Download PDF

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Publication number
EP0223422B1
EP0223422B1 EP86308130A EP86308130A EP0223422B1 EP 0223422 B1 EP0223422 B1 EP 0223422B1 EP 86308130 A EP86308130 A EP 86308130A EP 86308130 A EP86308130 A EP 86308130A EP 0223422 B1 EP0223422 B1 EP 0223422B1
Authority
EP
European Patent Office
Prior art keywords
feed roll
fibre
sliver feed
opening unit
disc
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
Application number
EP86308130A
Other languages
English (en)
French (fr)
Other versions
EP0223422A2 (de
EP0223422A3 (en
Inventor
Douglas Owen Clough
Stephen William Yates
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.)
Hollingsworth UK Ltd
Original Assignee
Hollingsworth UK Ltd
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 Hollingsworth UK Ltd filed Critical Hollingsworth UK Ltd
Priority to AT86308130T priority Critical patent/ATE48853T1/de
Publication of EP0223422A2 publication Critical patent/EP0223422A2/de
Publication of EP0223422A3 publication Critical patent/EP0223422A3/en
Application granted granted Critical
Publication of EP0223422B1 publication Critical patent/EP0223422B1/de
Expired legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H4/00—Open-end spinning machines or arrangements for imparting twist to independently moving fibres separated from slivers; Piecing arrangements therefor; Covering endless core threads with fibres by open-end spinning techniques
    • D01H4/30—Arrangements for separating slivers into fibres; Orienting or straightening fibres, e.g. using guide-rolls

Definitions

  • the present invention relates to a fibre-opening unit for an open-end spinner.
  • a fibrous sliver is fed to a rapidly rotating toothed wheel, the so-called beater roll, to be opened and converted into discrete fibres which are then entrained in an airstream along a fi- . bre feed duct towards the spinning location.
  • the airborne fibres land on the fibre-collecting groove inside the rapidly rotating rotor, and in the case of a friction spinner they land on a moving surface which imparts a rolling movement to the landing bundle of fibres to give the desired twist.
  • the present invention proposes positively locking the sliver feed roller in order to avoid any possibility of over-run of the sliver feed roller after declutching, and to eliminate any possibility of the continuing engagement of the beater roll with the leading end or fringe of the sliver dragging the sliver forwards and entraining rotation of the feed roller.
  • the locking action is applied simultaneously with the signal to interrupt rotation of the sliver feed roller, normally in response to a signal from the yarn detector.
  • the present invention can be applied where any other form of deactivation of the sliver feed roller is used, for example de-energisation of a motor driving the feed roller of a particular spinning unit.
  • FR-A 1 556 017 discloses the application of a braking action by attracting a clutch plate away from its driving shaft, and towards the housing of an electromagnet while the clutch plate remains in "dog clutch” type of engagement with the sliver feed roll.
  • a braking action does not have the guaranteed sliver feed roll braking action which results with the locking in accordance with the present invention.
  • Drive to the sliver feed rollers of all the spinning units is by way of a main layshaft extending along the machine, driven by a drive source such as an electric motor.
  • a drive source such as an electric motor.
  • a set of gears one gear for each spinning unit, and in the drawing one such gear, appropriate to the particular spinning unit being illustrated, is shown at 1.
  • the layshaft gear 1 is in constant mesh with a main feed gear 2 of the particular spinning unit, and this latter gear 2 is pressed on a boss 3 which is rotatable relative to its shaft 4 by way of a journal bearing 5.
  • a clutch member 6 which is axially movable into and out of engagement with an annular friction lining 7 under the influence of clutch-operating electromagnets 8.
  • clutch-operating electromagnets 8 When the clutch member 6 moves leftwardly, drive is established with the main feed gear 2 and hence the shaft 4, on which the clutch member 6 is keyed, is driven for rotation and will in turn rotate a worm 9 in mesh with a pinion 10 driving the sliver feed roller 11.
  • a locking disc 12 is mounted on the shaft 4 so as to be non-rotatable relative thereto and the disc 12 has peripheral teeth and alternating interstices into which the lip of a leaf spring locking tooth member 13 can move when released by a solenoid 14. The opposite end of the tooth member 13 is clamped to the frame 16 of the opening unit.
  • Both the solenoid 14 and the clutch-operating magnets 8 are linked to a yarn detector, schematically illustrated at 15.
  • the beater roll (not shown) will be in constant rotation along with the beater rolls of all the other spinning units of the same machine, driven for example on a common shaft, or by a flat belt drive, extending along the full length of the machine.
  • the spring tooth member 13 will be in the solid line position shown in the drawing.
  • a yarn detector override switch (not shown) will energise the clutch-operating magnets 8 and the solenoid 14 and this will both displace the tooth member 13 into its broken line position to release the disc 12 and the shaft 4 for rotation, and at the same time initiate drive by connecting the clutch member 6 drivingly to the main feed gear 2.
  • the yarn detector override switch becomes inoperative since the detector 15 will then indicate the presence of yarn between the doffing tube and the yarn winder and drive will be maintained.
  • the yarn detector 15 will operate to de-energise the solenoid 14 and the clutch-operating magnets 8 so that simultaneously drive to the shaft 4 is interrupted and the spring tooth 13 is liberated from its broken line position to move into engagement with one of the interstices of the disc 12, to lock the shaft 4 and the worm 9 against rotation.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Impression-Transfer Materials And Handling Thereof (AREA)
  • Paper (AREA)
  • Centrifugal Separators (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)

Claims (7)

1. Faser-Auflöseeinheit für eine Offenend-Spinneinheit, mit einer Faserband-Speisewalze und mit Mitteln, um den Antrieb der Faserband-Speisewalze zu unterbrechen, gekennzeichnet durch Mittel (12, 13, 14, 15), um die Faserband-Speisewalze bei unterbrochenem Antrieb drehfest zu verriegeln.
2. Faser-Auflöseeinheit nach Anspruch 1, dadurch gekenn zeichnet, daß die Mittel (12, 13, 14, 15) zur Verriegelung der Faserband-Speisewalze ein mit den Mitteln (6, 8, 15) zur Unterbrechung des Antriebs der Faserband-Speisewalze gemeinsames Teil (15) aufweisen, um die Unterbrechung des Antriebs und das Eintreten des Verriegelungseffektes gleichzeitig zu bewirken.
3. Faser-Auflöseeinheit nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Mittel (6, 8, 15) zur Unterbrechung des Antriebs der Faserband-Speisewalze eine elektrisch betätigte Kupplung aufweisen und die Mittel (12, 13, 14, 15) zur Verriegelung der Faserband-Speisewalze einen Verriegelungsmechanismus (12, 13, 14) mit Magnetbetätigung umfassen.
4. Faser-Auflöseeinheit nach Anspruch 3, dadurch gekennzeichnet, daß sie Mittel zur Verbindung der Kupplung (6, 8) und des Betätigungsmagneten (14) mit einem Garnwächter (15) aufweisen.
5. Faser-Auflöseeinheit nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß der Antrieb der Faserband-Speisewalze eine eine Schnecke (9) und ein Schneckenrad (10) enthaltende Einrichtung aufweist, bei der die Faserband-Speisewalze koaxial zu dem Schneckenrad angeordnet ist und daß der Verriegelungsmechanismus (12, 13) auf die Schneckenwelle (14) Eingriff nimmt.
6. Faser-Auflöseeinheit nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß der Verriegelungsmechanismus eine am Umfang gezahnte Scheibe (12) und ein in den verzahnten Umfangsbereich der Scheibe hinein und aus diesem heraus bewegbares Element (13) aufweist, derart, daß während der normalen angetriebenen Drehbewegung der Faserband-Speisewalze das bewegliche Element außerhalb des Bewegungsweges der Umfangsverzahnung der Scheibe steht und daß zur Verriegelung des Faserband-Speisewalze das bewegliche Element sich in dem Bewegungsweg der Umfangsverzahnung der Scheibe bewegt.
7. Faser-Auflöseeinheit nach Anspruch 6, dadurch gekennzeichnet, daß das bewegliche Element einen Federfinger (13) aufweist, der mit einem Ende an einem ortsfesten Teil (16) der Faser-Auflöseeinheit festgeklemmt ist und dessen anderes Ende unter der Einwirkung eines Betätigungsmagneten (14) elastisch bewegbar ist, welcher bei Erregung die Feder aus dem Bewegungsweg der Scheibenverzahnung heraushält und bei Entregung der Feder die Rückkehr in einen entspannten Zustand ermöglicht, indem sie in dem Bewegungsweg der Scheibenverzahnung liegt.
EP86308130A 1985-11-12 1986-10-20 Auflösevorrichtung für ein Faserband an einer Offenend-Spinneinheit Expired EP0223422B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86308130T ATE48853T1 (de) 1985-11-12 1986-10-20 Aufloesevorrichtung fuer ein faserband an einer offenend-spinneinheit.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8527829 1985-11-12
GB858527829A GB8527829D0 (en) 1985-11-12 1985-11-12 Fibre opening unit

Publications (3)

Publication Number Publication Date
EP0223422A2 EP0223422A2 (de) 1987-05-27
EP0223422A3 EP0223422A3 (en) 1987-12-02
EP0223422B1 true EP0223422B1 (de) 1989-12-20

Family

ID=10588079

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86308130A Expired EP0223422B1 (de) 1985-11-12 1986-10-20 Auflösevorrichtung für ein Faserband an einer Offenend-Spinneinheit

Country Status (4)

Country Link
EP (1) EP0223422B1 (de)
AT (1) ATE48853T1 (de)
DE (1) DE3667671D1 (de)
GB (1) GB8527829D0 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10222291A1 (de) * 2002-05-18 2003-11-27 Schlafhorst & Co W Faserbandzuführeinrichtung

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD67058A (de) * 1967-06-01
DE2323511A1 (de) * 1973-05-10 1974-11-28 Fritz Stahlecker Vorrichtung zum zufuehren und aufloesen eines faserbandes fuer offen-end-spinnaggregate
US3894386A (en) * 1974-06-06 1975-07-15 Alexandr Alexeevi Sharychenkov Arrangement for feeding fibres into the twister of an open-end spinning frame
DE2548434C2 (de) * 1975-10-29 1985-08-01 Fritz 7347 Bad Überkingen Stahlecker Zuführeinrichtung für ein Offenend-Spinnaggregat

Also Published As

Publication number Publication date
DE3667671D1 (de) 1990-01-25
ATE48853T1 (de) 1990-01-15
GB8527829D0 (en) 1985-12-18
EP0223422A2 (de) 1987-05-27
EP0223422A3 (en) 1987-12-02

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