US3908349A - Fiber guiding plate for a rotary spinning chamber of an open end spinning machine - Google Patents

Fiber guiding plate for a rotary spinning chamber of an open end spinning machine Download PDF

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Publication number
US3908349A
US3908349A US486456A US48645674A US3908349A US 3908349 A US3908349 A US 3908349A US 486456 A US486456 A US 486456A US 48645674 A US48645674 A US 48645674A US 3908349 A US3908349 A US 3908349A
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United States
Prior art keywords
fiber
guiding plate
spinning chamber
guiding
guiding portion
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US486456A
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English (en)
Inventor
Tooru Urifu
Tsutomu Miyazaki
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KAIWA BOSEKI KK
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KAIWA BOSEKI KK
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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

Definitions

  • a rotary spinning chamber for an open end spinning machine having a fiber introducing channel and a sector shaped guiding plate stationarily arranged for separting the spinning chamber into a fiber feeding part and a yarn withdrawing part.
  • the present invention relates to an open end spinning machine having a spinning chamber rotated at a high speed and a fiber introducing channel directed toward and opening into the spinning chamber, and more particularly, to a fiber guiding plate stationarily arranged in the spinning chamber to guide the fibers separated by a fiber-separating mechanism to the inner wall surface of the rotary spinning chamber.
  • fibers separated by the fiberseparating mechanism such as a combing roller or a draft roller are introduced into the rotary spinning chamber through a fiber introducing channel or pipe directed toward and opening into the rotary spinning chamber by a suction air current or ajet of pressurized air.
  • a fiber guiding plate in the form of a circular plate or cone is disposed stationarily within the spinning chamber to substantially divide the interior of the spinning chamber into a fiber feeding part and a yarn withdrawing part, and the back face of said plate opposed to the outlet opening of the fiber introducing channel is used as guide means for guiding the fibers onto the inner wall surface of the spinning machine.
  • the fiber feeding part of the spinning chamber is subjected to little effect of a rotational air current produced by the high speed rotation of the spinning chamber, so that there is creatcd a disturbed air current (reverse current or stagnation of air), with the result that while most of the fibers discharged together with air toward the back face of said fiber guiding plate from the outlet opening of the fiber introducing channel are carried in the direction of rotation of the spinning chamber, the remaining part of the fibers move in the reverse direction in said fiber feeding part of the spinning chamber and they stagnate therein. This interferes with the straightening of fibers and causes part of the fibers to be formed with hooks before the fibers reach the inner wall surface of the spinning chamber, thus lowering the quality of spun yarn.
  • the outer diameter of the fiber guiding plate relative to the inner diameter of the spinning chamber is decreased to allow as many fibers as possible to follow the direction of rotation of the spinning chamber after they have been discharged from the fiber introducing channel.
  • the fiber guiding function of the fiber guiding plate is receded and on the other hand the division of interior of the spinning chamber into said fiber feeding part and yarn withdrawing part becomes not substantial so that there occurs the problem of the fibers discharged from said channel directly interfering with the yarn being spun to lower the quality of the spun yarn.
  • An object of the present invention is to overcome said difficulties by providing a fiber guiding plate which is so configurated that the rotational air current produced by the high speed rotation ofa spinning chamber is introduced into said fiber feeding part from said yarn withdrawing part of the spinning chamber to regulate the direction of air currents in said fiber feeding part of the spinning chamber so that all the fibers discharged from the outlet opening of the fiber introducing channel are guided in the same direction toward the inner wall surface of the spinning chamber while they are straightened by being accelerated by means of the high speed rotational air current.
  • a fiber guiding plate which is substantially in the form of a sector and is stationarily arranged in the spinning chamber with the rear end portion thereof being opposed to said outlet opening of the fiber introducing channel.
  • a fiber guiding plate which is composed of a first guiding portion of relatively large radius and having substantially sector shape and a second guiding portion of relatively small radius and having substantially sector shape which extends forwardly from the forward edge of said first guiding portion.
  • the fiber guiding plate is stationarily arranged in the spinning chamber with the rear end portion of said first guiding portion being opposed to the outlet opening of the fiber introducing channel.
  • FIG. 1 is a vertical sectional view of a spinning portion of an open end spinning machine
  • FIG. 2 is a diagramatical bottom view showing air current distribution in the yarn feeding part of the spinning chamber shown in FIG. 1; 7
  • FIG. 3 is a bottom view showing an embodiment of the present invention.
  • FIG. 4 is a bottom view showing another embodiment of the present invention.
  • FIG. 5 is a perspective view showing further embodiment of the present invention.
  • FIG. 6 is a bottom view showing a still further embodiment of the present invention.
  • FIG. 7 is a bottom plan view showing how the fiber guiding plate of the present invention is stationarily arranged in the spinning chamber relative to the outlet opening of the fiber introducing channel.
  • FIG. 1 there is illustrated a spinning portion of an open end spinning machine having a conventional fiber guiding plate.
  • the reference numeral 1 designates a block in which a feed roller 2 and a combing roller 3 is rotatably mounted. These rollers are rotatively driven in the direction shown by the arrows from a driving source (not shown in the drawings).
  • the fibers 4 are pressed against the periphery of the feed roller 2 by means of a presser 5 and fed to the combing roller 3 where the fibers 4 are separated or combed.
  • the reference numeral 6 designates a fiber introducing channel which is directed toward and opening into a spinning chamber 7 which is rotatively driven at a high speed from a driving source (not shown in the drawings).
  • the fibers combed by the combing roller 3 are entrained by the air stream flowing in said channel 6 toward the back surface 10 of a circular fiber guiding plate 9 which is stationarily arranged in the spinning chamber 7 and divides the interior of the spinning chamber 7 into a fiber feeding part 11 adjacent to the outlet opening 8 of the fiber introducing channel 6 and a yarn withdrawing part 12 on the opposite side.of the plate 9.
  • the discharged fibers are guided by means of the fiber guiding plate 9 onto the inner wall surface 13 of the spinning chamber 7 and gathered together at the largest inner diameter portion 14 and successively withdrawn by meansof withdrawing rollers 16 as a yarn 15 from the yarn withdrawing part 12 of the spinning chamber 7.
  • the yarn I withdrawn by the rollers 16 is suitably taken up as shown by the reference numeral 17.
  • the fiber guiding plate 9 serves to guide the continuously fed fibers to the inner wall surface 13 of the spinning chamber 7 without directly interfering with the yarn being withdrawn.
  • the fiber guiding plate 9 is usually in the form of a circular plate or a trumpet and substantially divides the interior of the spinning chamber 7 into two parts 11 and 12 as described above, so that as described above, the rota tional air current as produced in said yarn withdrawing part 12 by the high speed rotation of the spinning chamber 7 can not well advance into said fiber feeding part 11 due to the existence of the fiber guiding plate 9 therebetween.
  • FIG. 2 An observation has revealed that air currents shown in FIG. 2 coexist in the fiber feeding part 11 of the spfiining chamber during spinning operation. As is seen from FIG. 2, around the outlet opening 8 of the fiber introducing channel 6, most of the air discharged from said channel 6 is flowing most strongly in the direction of rotation of the spinning chamber 7 but the rest is flowing in the opposite direction. The air current flowing in the opposite direction interfers with a weak rotational air current in said fiber feeding part 11, resulting in a local stagnation ,of the air in said fiber feeding part 11.
  • FIGS. 3 and 4 there are illustrated basical embodiments of the present invention.
  • the fiber guiding plate 9 is substantially in the form of a sector.
  • the arc length L of the periphery of the sector is determined by such factors as staple length and the rpm. of the spinning chamber 7, but it is preferably selected from the following range:
  • r is the radius of the sector.
  • FIG. 3 shows a fiber guiding plate 9, the arc length L of the sector thereof is wr/Z
  • FIG. 4 shows a fiber guiding plate 9, the arc length L of the sector thereof is 31rr/2.
  • the fiber guiding plates 9 shown in FIGS. 5 and 6 are advantageously used.
  • the fiber guiding plate 9 of FIGS. 5 and 6 is constituted by a first guiding portion 91 of relatively large radius r, and having substantially sector shape and a second guiding portion 92 of relatively small radius r and having substantially sector shape which extends forwardly from the forward edge 93 of said first guiding portion 91 as viewed in'the direction of rotation of the spinning chamber 7.
  • Said second guiding portion 92 may continuously extend from the forward edge 93 to the rear edge 94 of said first guiding portion 91 as shown in FIG. 5 or may terminate short of the rear edge 94 of said first guiding portion 92 as shown in FIG. 6.
  • the fiber guiding plate 9 according to the present invention is stationarily arranged in the spinning chamber 7, as shown in FIG. 7, with the rear end portion thereof being opposed to the.0utlet opening 8 of the fiber intro ducing channel 6.
  • the radius r of said first guiding portion 91 may be substantially same as that of the prior known fiber guiding plate, while the radius r of said second guiding portion 92 is preferably selected from the following range:
  • R is the maximum inner radius of the spinning chamber 7 (see FIG. 1).
  • the forward edge 93 of said first guiding portion 91 is extended forwardly as the periphery of said portion 91 is approached as shown in FIG. 6 by a dot and dash line 95. This contributes to enhance the fiber guiding function of said first guiding portion 91.
  • Such construction i.e. the forward extension of the forward edge 93 can be applied also to the fiber guiding plate of FIGS. 3, 4 and 5 to enhance the fiber guiding function thereof.
  • the fiber guiding plate 9 of the present invention is stationarily arranged inthe spinning chamber 7 with the rear end portion thereof being opposed to the outlet opening 8 of the fiber introducing channel 6.
  • the portion of said fiber feeding part 11 at the upstream of the outlet opening 8 of the fiber introducing channel 6 as viewed in the direction of said rotational air current is not covered by the fiber guiding plate 9, and, therefore, directly communicated with said yarn withdrawing part 12.
  • the rotational air current as produced in the yarn withdrawing part 12 by the high speed rotation of the spinning chamber 7 well advances into the portion of the fiber feeding part 11 which is covered by the fiber guiding plate 9 through the rear end portion thereof.
  • Such rotational air current as advanced or entered into the fiber feeding part 1].
  • the prevention of the interference of the fibers discharged into the fiber feeding part 11 of the spinning chamber 7 upon the yarn 15 being withdrawn is ensured since the fibers are thrown onto the inner wall surface 13 of the spinning chamber 7 only in the region covered by the fiber guiding plate 9.
  • a fiber guiding plate for dividing interior of a rotary spinning chamber of an open end spinning machine having in addition to said rotary spinning chamber a fiber introducing channel directed toward and opening into said spinning chamber, into a fiber feeding part adjacent to an outlet opening of said fiber introducing channel and a yarn withdrawing part on the opposite side of the fiber guiding plate, characterized in that said fiber guiding plate is substantially in the form of a sector and is stationarily arranged in said spinning chamber with the rear end portion thereof being op posed to said outlet opening of said fiber introducingchannel.
  • a fiber guiding plate for dividing interior of a rotary spinning chamber of an open end spinning machine having in addition to said rotary spinning chamber a fiber introducing channel directed toward the opening into said spinning chamber, into a fiber feeding part adjacent to an outlet opening of said fiber introducing channel and a yarn withdrawing part on the opposite side of the fiber guiding plate, characterized in that said fiber guiding plate is composed of a first guiding portion of relatively large radius and having substantially sector shape and a second guiding portion of relatively small radius and having substantially sector shape which extends forwardly from the forward edge of said first guiding portion, and is stationarily arranged in said spinning chamber with the rear end portion of said first guiding portion being opposed to said outlet opening of said fiber introducing channel.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
US486456A 1973-09-19 1974-07-08 Fiber guiding plate for a rotary spinning chamber of an open end spinning machine Expired - Lifetime US3908349A (en)

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JP48105766A JPS5063233A (en)) 1973-09-19 1973-09-19

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JP (1) JPS5063233A (en))
CH (1) CH583310A5 (en))
DE (1) DE2434233C3 (en))
FR (1) FR2244023B1 (en))
GB (1) GB1473331A (en))
IT (1) IT1016541B (en))

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4077196A (en) * 1976-11-02 1978-03-07 The United States Of America As Represented By The Secretary Of Agriculture Fiber dispersing and feeding apparatus for open end spinning
US4109452A (en) * 1976-04-17 1978-08-29 Kabushiki Kaisha Toyoda Jidoshokki Seisakusho Spinning rotor utilized for an open-end spinning apparatus
US4361007A (en) * 1980-03-05 1982-11-30 Burlington Industries, Inc. Open end spun slub yarn method and apparatus
US4435955A (en) 1980-03-05 1984-03-13 Burlington Industries, Inc. Method and apparatus for producing open-end-spun novelty yarns
US4471608A (en) * 1981-07-28 1984-09-18 Kabushiki Kaisha Toyoda Jidoshokki Seisakusho Open-end spinning unit
US4731987A (en) * 1986-06-27 1988-03-22 Vyzkumny Ustav Bavlnarsky Open-end rotor spinning unit
US5109663A (en) * 1989-06-02 1992-05-05 Fritz Stahlecker Arrangement for open end rotor spinning
US5359846A (en) * 1991-07-29 1994-11-01 Kabushiki Kaisha Toyoda Jidoshokki Seisakusho Spinning apparatus of rotor type open-end spinning unit and rotor driving method
US5687558A (en) * 1991-07-13 1997-11-18 Hans Stahlecker Fiber supply arrangement for open-end rotor spinning

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3339359A (en) * 1965-12-20 1967-09-05 Ripka Josef Spinning chamber for removing impurities from fibers
US3357168A (en) * 1965-12-07 1967-12-12 Vyzk Ustav Bavinarsky Spinning chamber air outlet
US3399523A (en) * 1965-09-11 1968-09-03 Vyzk Ustav Bavlnarsky Method of continuous spinning of fiber strands into yarns in a spinning chamber
US3511042A (en) * 1967-12-08 1970-05-12 Chary Anna Seidov Spindleless spinning apparatus
US3521440A (en) * 1968-02-07 1970-07-21 Lev Ivanovich Oskin Twisting device for pneumatic spinning
US3624994A (en) * 1968-10-18 1971-12-07 Vyzk Ustav Bavlnarsky Fiber spinning apparatus
US3688487A (en) * 1969-06-11 1972-09-05 Agency Ind Science Techn Method and apparatus for spinning flying fibers into a twisted yarn
US3698175A (en) * 1970-03-27 1972-10-17 Vyzk Ustav Bavlnarsky Spinning machine

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5124504B2 (en)) * 1973-07-31 1976-07-24

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3399523A (en) * 1965-09-11 1968-09-03 Vyzk Ustav Bavlnarsky Method of continuous spinning of fiber strands into yarns in a spinning chamber
US3357168A (en) * 1965-12-07 1967-12-12 Vyzk Ustav Bavinarsky Spinning chamber air outlet
US3339359A (en) * 1965-12-20 1967-09-05 Ripka Josef Spinning chamber for removing impurities from fibers
US3511042A (en) * 1967-12-08 1970-05-12 Chary Anna Seidov Spindleless spinning apparatus
US3521440A (en) * 1968-02-07 1970-07-21 Lev Ivanovich Oskin Twisting device for pneumatic spinning
US3624994A (en) * 1968-10-18 1971-12-07 Vyzk Ustav Bavlnarsky Fiber spinning apparatus
US3688487A (en) * 1969-06-11 1972-09-05 Agency Ind Science Techn Method and apparatus for spinning flying fibers into a twisted yarn
US3698175A (en) * 1970-03-27 1972-10-17 Vyzk Ustav Bavlnarsky Spinning machine

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4109452A (en) * 1976-04-17 1978-08-29 Kabushiki Kaisha Toyoda Jidoshokki Seisakusho Spinning rotor utilized for an open-end spinning apparatus
US4077196A (en) * 1976-11-02 1978-03-07 The United States Of America As Represented By The Secretary Of Agriculture Fiber dispersing and feeding apparatus for open end spinning
US4361007A (en) * 1980-03-05 1982-11-30 Burlington Industries, Inc. Open end spun slub yarn method and apparatus
US4435955A (en) 1980-03-05 1984-03-13 Burlington Industries, Inc. Method and apparatus for producing open-end-spun novelty yarns
US4471608A (en) * 1981-07-28 1984-09-18 Kabushiki Kaisha Toyoda Jidoshokki Seisakusho Open-end spinning unit
US4731987A (en) * 1986-06-27 1988-03-22 Vyzkumny Ustav Bavlnarsky Open-end rotor spinning unit
US5109663A (en) * 1989-06-02 1992-05-05 Fritz Stahlecker Arrangement for open end rotor spinning
US5687558A (en) * 1991-07-13 1997-11-18 Hans Stahlecker Fiber supply arrangement for open-end rotor spinning
US5359846A (en) * 1991-07-29 1994-11-01 Kabushiki Kaisha Toyoda Jidoshokki Seisakusho Spinning apparatus of rotor type open-end spinning unit and rotor driving method

Also Published As

Publication number Publication date
IT1016541B (it) 1977-06-20
DE2434233B2 (de) 1978-11-02
GB1473331A (en) 1977-05-11
FR2244023B1 (en)) 1976-12-24
JPS5063233A (en)) 1975-05-29
DE2434233A1 (de) 1975-04-03
DE2434233C3 (de) 1979-06-28
FR2244023A1 (en)) 1975-04-11
CH583310A5 (en)) 1976-12-31

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