US3924398A - Method of and apparatus for open end spinning from staple fibers - Google Patents

Method of and apparatus for open end spinning from staple fibers Download PDF

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Publication number
US3924398A
US3924398A US517522A US51752274A US3924398A US 3924398 A US3924398 A US 3924398A US 517522 A US517522 A US 517522A US 51752274 A US51752274 A US 51752274A US 3924398 A US3924398 A US 3924398A
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United States
Prior art keywords
spinning chamber
air flow
yarn
spinning
fibers
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
US517522A
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English (en)
Inventor
Miroslav Esser
Zdenek Ledr
Frantisek Ferkl
Miloslav Kubovy
Josef Ripka
Frantisek Hortlik
Jiri Elias
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.)
Vyzkumny Ustav Bavlnarsky AS
Original Assignee
Vyzkumny Ustav Bavlnarsky AS
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.)
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Application filed by Vyzkumny Ustav Bavlnarsky AS filed Critical Vyzkumny Ustav Bavlnarsky AS
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Publication of US3924398A publication Critical patent/US3924398A/en
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    • 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
    • D01H4/04—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 imparting twist by contact of fibres with a running surface
    • D01H4/08—Rotor spinning, i.e. the running surface being provided by a rotor
    • D01H4/12—Rotor bearings; Arrangements for driving or stopping
    • D01H4/14—Rotor driven by an electric motor
    • 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
    • D01H4/04—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 imparting twist by contact of fibres with a running surface
    • D01H4/08—Rotor spinning, i.e. the running surface being provided by a rotor

Definitions

  • ABSTRACT Method of and apparatus for open end spinning yarn from staple fibers in a rotary underpressure spinning chamber.
  • the apparatus has a feeding channel for feeding fibers from a fiber opening mechanism merging into said spinning chamber through a stationary lid, and a yarn withdrawing element in the form of a hollow pin passing through the hollow shaft of the spinning chamber with a predetermined clearance oppositely to the lid of the spinning chamber engaging its front opening.
  • the spinning chamber is mounted in an air lubricated bearing, lubrication air being blown into said clearance.
  • the inner space of the rotary underpressure spinning chamber is subjected to three air flows, of which one is an air flow passing together with the fibers through the feeding channel, another air flow being fed from the ambiend atmosphere through the hollow pin for withdrawing the yarn, (6) and a further air flow being fed through the clearance between the hollow pin and the hollow shaft of the spinning chamber.
  • Said air flows form a resulting air flow inside the spinning chamber preventing fiber losses and the wrapping of fibers about the yarn being formed therein, said resulting air flow escaping through an outlet slot between the stationary lid and the front margin of the spinning chamber into a collecting space.
  • the present invention relates to a method of and an apparatus for open end spinning yarn from staple fibers in a rotary underpressure spinning chamber, which is mounted in an air-lubricated bearing, and into which there opens a feeding channel for feeding fibers from a fiber opening mechanism through a stationary lid.
  • a yarn withdrawing element in the form of a hollow pin, the pin passing through the hollow shaft of the spinning chamber with a predetermined clearance.
  • Spinning devices for open end spinning yarn by means of a rotary underpressure spinning chamber which are known at present prevailingly use a structure in which the means for feeding the fibers and the means for yarn withdrawal are situated at the same side of the spinning chamber.
  • This structure has the disadvantage, upon increasing the speed of the spinning chamber, that it requires a reduced diameter thereof, thus causing considerable difficulties with regard to space. Perhaps the most important of such difficulties is the maintaining of the cross section of the feeding channel for feeding separated fibers, such cross section markedly affecting the rate of fiber flow.
  • so-called drilled fans are used, of which the inlet holes are located inside the spinning chamber apart from the collecting surface, on the collecting surface, or near the front of the spinning chamber.
  • the disadvantage of those devices consists in their difficult manufacture and in the repeated plugging of the holes by impurities and fine dust which are entrained with the fibers.
  • spinning units are known in which the air flow enters through the fiber feeding channel from the fiber opening mechanism and through the channel for withdrawing yarn, said channels being situated at the front side of the spinning chamber, while the air from the spinning chamber escapes through a slot or collar at the margin of the front opening of the spinning chamber.
  • Such devices have difficulties with reliable separation of fibers from the air flow to the collecting surface of the spinning chamber, and further in entraining not separated fibers apart from the spinning chamber.
  • an antifriction bearing mounting of the spinning chamber is used.
  • the apparatus has a rotary underpressure spinning chamber mounted in an air lubricated bearing, a feeding channel for feeding fibers from a fiber opening mechanism merging into said spinning chamber through a stationary lid and, at the side located opposite to the lid of said spinning chamber, engaging its front opening; a yarn withdrawing element in the form of a hollow pin is situated which passes with a certain clearance through the hollow shaft of the spinning chamber, lubricating air being fed into said clearance.
  • three air flows are joined i.e. (a) the air flow coming together with the fibers through the feeding channel, (b) the air flow coming from the ambient atmosphere through the hollow pin for withdrawing yarn, and (c) the air flow fed through the clearance between the hollow pin and the hollow shaft of the spinning chamber.
  • Said air flows form a resulting air flow inside the spinning chamber preventing fiber losses and the wrapping of fibers about the yarn being formed.
  • the resulting air flow escapes through an outlet slot between the lid and the front margin of the spinning chamber into a collecting space.
  • a further feature making possible the achieving of favorable conditions is that the flow rates in the separate air flows are made to have a mutual relation given by the range Ql Q 100 +90 2+20) :(1+20 of which Q is the rate of air flow excaping through the outlet slot, Q is the rate of air flow in the feeding channel, Q is the rate of air flow in the hollow pin, i.e. in the yarn withdrawing channel, and Q, is the rate of air flow passing through the clearance between the hollow pin and the hollow shaft of the spinning chamber.
  • the underpressure source for withdrawing the resulting air flow from the spinning chamber is located in a collecting space into which merges the outlet slot, or which is connected to said collecting space.
  • a further improvement in separating fibers from air is achieved by arranging a baffle, preferably in the form of a disc, between the feeding channel, on one side, and the opening of the hollow pin and the clearance opening between the hollow pin and the hollow shaft, on the other side.
  • FIG. 1 is a fragmentary view in axial section through a part of a spinning unit in accordance with the invention.
  • the spinning unit fragmentarily shown in FIG. 1 includes a known fiber opening mechanism with e.g. a fiber opening roller (not shown) mounted inside body 1, and a twisting mechanism with a spinning chamber 5.
  • a fibrous silver (not shown) is presented to the fiber opening mechanism, is opened there, and the separated fibers 3 are fed through a feeding channel 4 by an air flow into the spinning chamber 5 which is closed at its front margin 52 by a lid 11 which, in the construction shown, is formed by a part of body 1.
  • yarn 6 is formed in a known manner, the yarn being withdrawn via the skewed end 7 of a hollow pin 9 through the channel 8 formed therein.
  • Yarn 6 is withdrawn by withdrawing mechanism 10 and is further wound in a known manner on to a bobbin (not shown).
  • the spinning chamber 5 is mounted on a hollow pin 9 by a hollow shaft 12 in such manner that a predetermined clearance 91 exists between the hollow pin 9 and the hollow shaft 12. Pressure air is fed through a pressure line 13 from a source (not shown) into said clearance. Thereupon an air lubricating cushion is formed in clearance 91, and the hollow shaft 12 of the spinning chamber 5 is journalled in such air cushion. In this case the spinning chamber 5 is driven by a separate electric motor 14 mounted in body 2. Rotor 140 is fixed directly on the hollow shaft 12.
  • the inner space 15 of spinning chamber 5 is connected by an outlet slot 16 between lid 11 and front margin 52 of spinning chamber 5 to the outer collecting space 17 through which the air from spinning chamber 5 is passed into an outlet conduit 18.
  • the outer surface 19 of spinning chamber 5 or a part of the chamber may be made in the form of a fan, i.e. an underpressure source, or creates a sufficient underpressure by its own ventilation losses. However, it is also possible to use another underpressure source, (not shown) connected to the outlet conduit 18 of collecting space 17.
  • Air flow Q passes into spinning chamber 5 from the side of lid 11 through the feeding channel 4- and, on the opposite side of spinning chamber 5.
  • Air flow Q2 is fed thereto through hollow pin 9, i.e. through the channel 8 for withdrawing yarn 6. Air flow Q flows from clearance 91.
  • Q denotes the rate of air flow escaping through the outlet slot
  • Q denotes the rate of air flow in the feeding channel
  • Q denotes the rate of air flow in the passage in the hollow pin forming the yarn withdrawing channel
  • Q denotes the rate of air flow passing through the clearance between the hollow pin and the hollow shaft of the spinning chamber.
  • Apparatus as claimed in claim 3 comprising an underpressure source for withdrawing the resulting air flow from the spinning chamber, said underpressure source being connected to said collecting space.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Preliminary Treatment Of Fibers (AREA)
US517522A 1973-10-24 1974-10-24 Method of and apparatus for open end spinning from staple fibers Expired - Lifetime US3924398A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CS7307A CS169114B1 (is") 1973-10-24 1973-10-24

Publications (1)

Publication Number Publication Date
US3924398A true US3924398A (en) 1975-12-09

Family

ID=5421937

Family Applications (1)

Application Number Title Priority Date Filing Date
US517522A Expired - Lifetime US3924398A (en) 1973-10-24 1974-10-24 Method of and apparatus for open end spinning from staple fibers

Country Status (6)

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US (1) US3924398A (is")
JP (1) JPS5526211B2 (is")
CH (1) CH571584A5 (is")
CS (1) CS169114B1 (is")
DE (1) DE2449411C3 (is")
GB (1) GB1462233A (is")

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4070813A (en) * 1975-12-24 1978-01-31 Teldix G.M.B.H. Open end spinning unit having reduced operating power requirements
US4112663A (en) * 1976-07-06 1978-09-12 Vyzkumny Ustav Bavlnarsky Method of and apparatus for cooling spinning units of open-end spinning machines
US4166354A (en) * 1976-10-14 1979-09-04 Societe Alsacienne De Constructions Mecaniques De Mulhouse Freed-fiber spinning devices
US4242858A (en) * 1977-09-15 1981-01-06 Bbc Brown, Boveri & Company, Limited Open-end spinning device
US4519205A (en) * 1981-12-22 1985-05-28 Bbc Brown, Boveri & Company, Limited Drive and mounting for an open-end spinning unit
US4543780A (en) * 1981-12-22 1985-10-01 Bbc Brown, Boveri & Company, Limited Drive and mounting for an open-end spinning unit

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4335797A (en) * 1979-10-10 1982-06-22 Caterpillar Tractor Co. Noise suppression arrangement for engine enclosures
DE102006045589A1 (de) † 2006-09-27 2008-04-03 Oerlikon Textile Gmbh & Co. Kg Verfahren zum Betreiben einer Spinnvorrichtung

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3769785A (en) * 1970-06-19 1973-11-06 Rieter Ag Maschf Rotor of an open end spinning device
US3797962A (en) * 1971-01-27 1974-03-19 Stahlecker Gmbh Wilhelm Spinning turbine
US3812667A (en) * 1971-03-05 1974-05-28 Vyzk Ustav Bavlnarsky Ringless spinning of separated staple fibres
US3838560A (en) * 1970-12-14 1974-10-01 Stahlecker Gmbh Wilhelm Bearing unit for open-end spinning turbines
US3845612A (en) * 1972-02-23 1974-11-05 Platt International Ltd Spinning apparatus

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5023532B2 (is") * 1971-09-09 1975-08-08

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3769785A (en) * 1970-06-19 1973-11-06 Rieter Ag Maschf Rotor of an open end spinning device
US3838560A (en) * 1970-12-14 1974-10-01 Stahlecker Gmbh Wilhelm Bearing unit for open-end spinning turbines
US3797962A (en) * 1971-01-27 1974-03-19 Stahlecker Gmbh Wilhelm Spinning turbine
US3812667A (en) * 1971-03-05 1974-05-28 Vyzk Ustav Bavlnarsky Ringless spinning of separated staple fibres
US3845612A (en) * 1972-02-23 1974-11-05 Platt International Ltd Spinning apparatus

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4070813A (en) * 1975-12-24 1978-01-31 Teldix G.M.B.H. Open end spinning unit having reduced operating power requirements
US4112663A (en) * 1976-07-06 1978-09-12 Vyzkumny Ustav Bavlnarsky Method of and apparatus for cooling spinning units of open-end spinning machines
US4166354A (en) * 1976-10-14 1979-09-04 Societe Alsacienne De Constructions Mecaniques De Mulhouse Freed-fiber spinning devices
US4242858A (en) * 1977-09-15 1981-01-06 Bbc Brown, Boveri & Company, Limited Open-end spinning device
US4519205A (en) * 1981-12-22 1985-05-28 Bbc Brown, Boveri & Company, Limited Drive and mounting for an open-end spinning unit
US4543780A (en) * 1981-12-22 1985-10-01 Bbc Brown, Boveri & Company, Limited Drive and mounting for an open-end spinning unit

Also Published As

Publication number Publication date
JPS5526211B2 (is") 1980-07-11
DE2449411C3 (de) 1980-07-31
JPS5077629A (is") 1975-06-25
DE2449411B2 (de) 1979-11-15
GB1462233A (en) 1977-01-19
CH571584A5 (is") 1976-01-15
DE2449411A1 (de) 1975-04-30
CS169114B1 (is") 1976-07-29

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