US3336741A - Twist equalizing spinning apparatus - Google Patents

Twist equalizing spinning apparatus Download PDF

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Publication number
US3336741A
US3336741A US598265A US59826566A US3336741A US 3336741 A US3336741 A US 3336741A US 598265 A US598265 A US 598265A US 59826566 A US59826566 A US 59826566A US 3336741 A US3336741 A US 3336741A
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US
United States
Prior art keywords
yarn
delivery channel
collecting surface
spinning chamber
twist
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
US598265A
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English (en)
Inventor
Zavadsky Karel
Sejbal Dalibor
Stary Josef
Kubovy Miloslav
Dobrouc Dolni
Bucil Frantisek
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.)
Filing date
Publication date
Application filed by Vyzkumny Ustav Bavlnarsky AS filed Critical Vyzkumny Ustav Bavlnarsky AS
Application granted granted Critical
Publication of US3336741A publication Critical patent/US3336741A/en
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Expired - Lifetime 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
    • D01H4/40—Removing running yarn from the yarn forming region, e.g. using tubes
    • 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
    • D01H4/10—Rotors

Definitions

  • the present invention relates to a twist equalizing spinning apparatus, and more particularly to an arrangement by which the twist of a yarn spun in a rotary spinning chamber is controlled to be substantially uniform in different portions of the spun yarn.
  • fibers are introduced into the interior of a rotary spinning chamber and are deposited on a circular inner collecting surface so as to be spun into a yarnwhich is transported out of the spinning chamber by transporting rollers and through a stationary delivery channel.
  • the hollow shaft of the spinning chamber is used as delivery channel.
  • a portion of the spun yarn extends from the rotating collecting surface to the inlet opening of the delivery channel and another portion of the yarn is located in the delivery channel and transported by rollers gripping the yarn.
  • the direction of the yarn is changed between the two yarn portions from a substantially radial direction to the axial direction in which the delivery channel extends. Due to the fact that the yarn is bent at the point at which the direction changes, the two yarn portions are differently twisted and the portion of the yarn between the collecting surface and the delivery channel is less twisted than the portion of the yarn between the bent point of the yarn at the inner end of the delivery channel and the transporting roller. Consequently, the yarn portion within the spinning chamber has a lesser tensile strength than the highly twisted yarn portions in the delivery channel. Due to this fact, the speed of the delivery rollers and of the spinning chamber cannot be increased above a certain limit since a higher speed would cause breaking of the less twisted and weaker yarn portion within the spinning chamber.
  • Another object of the invention is to provide a twist equalizing spinning apparatus which can be operated at a higher speed than conventional ringless spinning apparatus.
  • Another object of the invention is to provide a spinning apparatus in which the incidence of yarn breakages is reduced as compared with the prior art.
  • the present invention relates to an improved spinning apparatus of the type comprising a rotary spinning chamber having an axis of rotation and an annular inner collecting surface.
  • An embodiment of the invention comprises guide means, preferably in the form of a stationary body closing an open end of the spinning chamber.
  • the guide means have an inlet channel for supplying a fibrous material to the collecting surface so that a spun yarn is formed on the collecting surface.
  • the spun yarn is delivered through a delivery channel having a yarn receiving inner end located in the region of the axis of rotation of the spinning chamber and opening into the same.
  • the delivery channel extends along a straight line connecting the inner end thereof with the collecting surface.
  • the yarn When the yarn is withdrawn from the delivery channel by transporting means, preferably a pair of transporting rollers, the yarn extends along a straight path from the collecting surface to the inner end of the delivery channel in one angular position of the spinning chamber which is assumed once during each revolution. While the yarn extends along the straight path between the collecting surface and the transporting rollers, the lesser twist of the yarn portion located in the spinning chamber and the higher twist of the yarn portion located in the delivery channel and extending through the transporting rollers, compensate each other. In this manner, the twist of the yarn is equalized once during each revolution, and the yarn between the collecting surface and the transporting rollers has a substantially constant tensile strength permitting a high speed operation.
  • the inlet channel through which fibers are supplied to the collecting surface is located in a plane passing through the axis of rotation of the spinning chamber and through the axis of the delivery channel, which is, however, not necessary.
  • FIG. 1 is a fragmentary axial sectional view illustrating a spinning apparatus according to the present invention in one operational position
  • FIG. 2 is a fragmentary axial sectional view illustrating the spinning apparatus in another operational position in which the spun yarn extends along a straight line.
  • a drive shaft 20 carries a spinning chamber 1 which has two opposite frustoconical surfaces 21 and 22 which together form a circular collecting surface 4 in the region of the greatest diameter of the spinning chamber.
  • the spinning chamber has an open end 23 in which a circular portion of a guide body 10 is located.
  • the guide body 10 has an inlet channel 3 through which a fibrous material 2 is supplied to the frusto-conical inner surface 22 so that the fibers are urged by the centrifugal force toward the collecting surface 4 where they are spun into a yarn 5, as is well known to those skilled in the art.
  • Guide body 10 has a delivery channel 8 with an inner end located substantially in the axis of rotation of shaft 20 and spinning chamber 1, and opening into the spinning chamber.
  • a portion 5a of the yarn 5 extends in substantially radial direction from the collecting surface 4 to the opening 9, and the adjacent yarn portion 5b extends from opening 9 through the delivery channel 8 to a pair of transporting rollers 6 which transport yarn 5 to a rotary take-up means on Which a bobbin 7 is formed.
  • the delivery channel 8 is slanted to the axis of rotation of the spinning chamber, and extends along a straight line connecting a point 11 of collecting surface 4 with opening 9.
  • opening 9 is located on the axis of rotation of the spinning chamber so that the imaginary line also passes through the point of intersection between the axis of rotation and the surface 10a of guide body 10. It is also preferred to place the nip of roller 6 on the same line so that in the angular position of the spinning chamber 1 shown in FIG. 2, the yarn 5 extends along a straight line from collecting surface 4, through the delivery channel 8 and to the transporting rollers 6.
  • the yarn forming point 11 moves over the collecting surface 4 of the rotating spinning chamber 1 so that the yarn portion 5a is rotated whereby the yarn is twisted.
  • the yarn portion 517 has a higher twist density than the yarn portion 50.
  • the spinning chamber turns during each revolution to the position of FIG.
  • Twist equalizing spinning apparatus comprising, in combination, a rotary spinning chamber having an axis of rotation, and an annular inner collecting surface; and guide means having an inlet channel for supplying a fibrous material to said collecting surface so that a spun yarn is formed on said collecting surface, and a delivery channel for said yarn having a yarn receiving inner end located in the region of said axis and opening into said spinning chamber, said delivery channel extending along a straight line connecting said inner end with said collecting surface; and transporting means for transporting the spun yarn out of said delivery channel so that the yarn extends along a straight path from said collecting surface to said inner end and through said delivery channel in one angular position of said spinning chamber whereby the lesser twist of the yarn portion located in said spinning chamber between said inner end of said delivery channel and said collecting surface and the higher twist of the yarn portion located in said delivery channel compensate each other in said one angular position of said spinning chamber.
  • a spinning apparatus wherein said body has a face extending transverse to said axis of rotation and being located in said open end of said spinning chamber; and wherein said delivery channel has a central axis intersecting with said axis of rotation on said face of said body so that the center of said inner end of said delivery channel is located on said axis of rotation.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
US598265A 1965-12-01 1966-12-01 Twist equalizing spinning apparatus Expired - Lifetime US3336741A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CS719865 1965-12-01

Publications (1)

Publication Number Publication Date
US3336741A true US3336741A (en) 1967-08-22

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ID=5420673

Family Applications (1)

Application Number Title Priority Date Filing Date
US598265A Expired - Lifetime US3336741A (en) 1965-12-01 1966-12-01 Twist equalizing spinning apparatus

Country Status (7)

Country Link
US (1) US3336741A (lt)
AT (1) AT264335B (lt)
BE (1) BE690264A (lt)
CH (1) CH465458A (lt)
DE (1) DE1535011C3 (lt)
ES (1) ES333976A1 (lt)
GB (1) GB1105836A (lt)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3861131A (en) * 1972-11-30 1975-01-21 Alsacienne Constr Meca Apparatus for spinning loose fibres
US4241572A (en) * 1978-05-09 1980-12-30 Societe Alsacienne De Constructions Mechaniques De Mulhouse Rotors of freed-fiber spinning devices
US4481766A (en) * 1981-12-29 1984-11-13 Kabushiki Kaisha Toyoda Jidoshokki Seisakusho Yarn draw off tube for open-end spinning unit

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3523300A (en) * 1966-08-18 1970-08-04 Toray Industries Spinning method and apparatus for manufacturing yarn from textile fibers
FR1604983A (lt) * 1968-04-09 1972-06-26

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2926483A (en) * 1957-05-07 1960-03-01 Keeler Method of and to apparatus for use in concatenating fibrous material to form a spun yarn or strand
US3107477A (en) * 1949-11-23 1963-10-22 Meimberg Julius Process and apparatus for spinning fibrous materials

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3107477A (en) * 1949-11-23 1963-10-22 Meimberg Julius Process and apparatus for spinning fibrous materials
US2926483A (en) * 1957-05-07 1960-03-01 Keeler Method of and to apparatus for use in concatenating fibrous material to form a spun yarn or strand

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3861131A (en) * 1972-11-30 1975-01-21 Alsacienne Constr Meca Apparatus for spinning loose fibres
US4241572A (en) * 1978-05-09 1980-12-30 Societe Alsacienne De Constructions Mechaniques De Mulhouse Rotors of freed-fiber spinning devices
US4481766A (en) * 1981-12-29 1984-11-13 Kabushiki Kaisha Toyoda Jidoshokki Seisakusho Yarn draw off tube for open-end spinning unit

Also Published As

Publication number Publication date
BE690264A (lt) 1967-05-02
CH465458A (de) 1968-11-15
DE1535011B2 (de) 1974-01-24
DE1535011C3 (de) 1974-08-15
ES333976A1 (es) 1967-11-01
AT264335B (de) 1968-08-26
DE1535011A1 (de) 1971-05-13
GB1105836A (en) 1968-03-13

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