US3834148A - Ringless spinning apparatus - Google Patents

Ringless spinning apparatus Download PDF

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Publication number
US3834148A
US3834148A US00344035A US34403573A US3834148A US 3834148 A US3834148 A US 3834148A US 00344035 A US00344035 A US 00344035A US 34403573 A US34403573 A US 34403573A US 3834148 A US3834148 A US 3834148A
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US
United States
Prior art keywords
spinning
fibrous materials
channel means
channel
spinning chamber
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
US00344035A
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English (en)
Inventor
O Yuasa
W Sakurai
T Igarashi
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.)
Toyota Industries Corp
Daiwa Boseki KK
Original Assignee
Daiwa Boseki KK
Toyoda Automatic Loom Works 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
Priority claimed from JP3043372A external-priority patent/JPS5214765B2/ja
Priority claimed from JP3043472A external-priority patent/JPS5242892B2/ja
Application filed by Daiwa Boseki KK, Toyoda Automatic Loom Works Ltd filed Critical Daiwa Boseki KK
Application granted granted Critical
Publication of US3834148A publication Critical patent/US3834148A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • D01H4/38—Channels for feeding fibres to the yarn forming region
    • 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
    • D01H4/32—Arrangements for separating slivers into fibres; Orienting or straightening fibres, e.g. using guide-rolls using opening rollers

Definitions

  • ABSTRACT In a ringless spinning apparatus of the type comprising a feed roller rotatable about its vertical axis for feeding fibrous materials, an opening roller rotatable about its vertical axis and provided with a plurality-of saw tooth wires wound circumferentially around the peripheral surface thereof for opening the fibrous materials fed by said feed roller, channel means arranged adjacent the peripheral surface for taking off the opened fibrous materials from the opening roller and transferring them by the action of a jet of air passing therein, and a rotary spinning chamber for collecting and spinning the opened fibrous materials transferred thereinto from the channel means, the latter converges toward the spinning chamber by tapering at least one of the upper and lower walls thereof, while the sectional area of the channel means is progressively reduced toward the spinning chamber at the downstream side of the opening roller.
  • This invention relates to a ringless spinning apparatus, and more particularly to an improvement of a ringless spinning apparatus comprising a feed roller for feeding a sliver, an opening roller having a number of saw tooth wires wound circumferentially around the peripheral surface thereof, a fiber transfer channel for passing an air flow therein, a spinning chamber having a rotating wall and operating under negative pressure, and a stationary separator disposed in said spinning chamber.
  • the channel of the prior art apparatus is so shaped that its width in the direction perpendicular to the axis of rotation of the opening roller is progressively reduced toward the outlet end of the channel but the other width, in the direction parallel to the axis of rotation of the opening roller, is constant or the walls that are substantially parallel to both side faces of the opening roller are parallel to each other and spaced apart by a distance slightly larger than the width of the opening roller.
  • the outlet of the channel has a rectangular shape elongated in the radial direction of the spinning chamber, and the negative pressure distribution in the channel is not uniform in the direction of the aforesaid other width of the channel so that the fiber distribution in the channel becomes non-uniform.
  • the primary object of the present invention is to provide a channel which obviates the abovedescribed disadvantages of the prior art channels and is capable of transferring therein in a more rational and orderly manner the fibres to the spinning chamber, which are taken off from the opening roller.
  • the second object of the invention is to provide a channel having an improved outlet opening, which enables the fibers discharged from the channel into the spinning chamber to be subjected substantially uniformly to the action of air swirling in the spinning chamber and thereby to be brought to the inner wall surface of the chamber with a minimum time lag.
  • a ringless spinning apparatus comprising a feed roller rotatable about its vertical axis for feeding fibrous materials, an opening roller-rotatable about its vertical axis and provided with a plurality of saw tooth wires wound circumferentially around the peripheral surface thereof for opening the fibrous materials fed by said feed roller, channel means arranged adjacent the peripheral surface for taking ofithe opened fibrous materials from the opening roller and transferring them by the action of a jet of air passing therein, and a rotary spinning chamber for collecting and spinning the opened fibrous materials transferred thereinto from the channel means, characterized in that the latter converges toward the spinning chamber by tapering at least one of the upper and lower walls thereof wherein the sectional area of the channel means is progressively reduced toward the spinning chamber at the portion on the downstream side of the opening roller.
  • FIG. 1 is a plan view showing, partially in section, the essential portion of a ringless spinning apparatus according to this invention
  • FIGS. 2 4 show an embodiment of the ringless spinning'apparatus according to the present invention, of which: F 1652 is a perspective view for explaining an essential portion of the apparatus; FIG. 3 is a fragmentary side view of the apparatus as viewed from the inlet side of the channel and; FIG. 4 is a perspective view showing schematically the shape of a channel; 7
  • FIG. 5 is a view showing the cross-sectional shapes at selected portions of the channel sequentially from the inlet to the outlet of the channel;
  • FIG. 6 is a diagram showing the air velocity change in the channel
  • FIGS. 7a and 7b are plan views respectively showing schematically the positions and shapes of the channel outlets of a conventional apparatus and the apparatus of this invention.
  • FIG. 8 is a fragmentary plan view of a roller housing block
  • FIGS. 9 and 10 are perspective views of different types of a detachable element by which the channel is formed.
  • the examplary ringless spinning apparatus or open end spinning apparatus comprises a feed roller I for feeding a sliver S, an opening roller 3 rotatable about its axis and provided with saw tooth wires 9 wound spirally around the peripheral surface thereof, a fiber transfer channel 5 having a part of the peripheral surface of the opening roller 3 projecting thereinto, and a rotary spinning chamber 4 having a stationary separator 6 disposed therein, the channel 5 extending into the interior of the spinning chamber 4.
  • the opening roller 3 and the spinning chamber 4 are arranged such that the axis 0 of rotation of the former and the axis P of rotation of the latter intersect at right angles to each other. Further, the opening roller 3 is in such a position relative to the spinning chamber 4 that the free end face 10 thereof is not flush'with the axis P of the spinning chamber and is offset to one side from the axis P.
  • the feed roller 1, the opening roller 3 and the channel 5 are housed in a block.
  • the transfer channel 5, in which the fibers of the opened sliver are taken off from the peripheral surface of the opening roller 3 and transferred to the spinning chamber 4 by the action of air passing therein, is of such construction that a bottom wall 1 1 thereof is inclined toward the axis P of the spinning chamber 4 (see FIG. 4) and the transverse crosssectional shape of the channel is axially asymmetrical. and the cross-sectional area thereof is progressively reduced toward an outlet 12 or toward the spinning chamber
  • the outlet 12 of the channel 5 has a square or rounded triangular shape.
  • the outlet of the prior art channel is rectangular in shape, so that a negative pressure differential or suction differential occurs in the channel between the respective portions closer to and remote from the axis P of the spinning chamber 4 at the outlet. Consequently, the mixture ratio of air and fiber becomes higher at the portion of the outlet 12 closer to the axis P of the spinning chamber 4 than at the portion of the same remote from the axis (see FIG. 7a).
  • this undesirable phenomenon is eliminated by forming the outlet 12 of the channel 5 in an axially asymmetrical shape, as shown in FIG. 7b, by making the cross-sectional area of the channel smaller at the portion remote from the axis Pof the spinning chamber 4 than at the portion closer to said axis.
  • FIGS. 4 and 5 The shape of the channel according to the invention is clearly illustrated in FIGS. 4 and 5.
  • the crosssectional shape of the channel 5 is rectangular at the inlet end thereof and also at a section A successive to the inlet end as shown at A in FIG. 5.
  • the channel 5 has respective elongate inverted trapezoidal shapes as shown at B, C in FIG. 5.
  • the cross-sectional area thereof is reduced quite remarkably at the portion of the channel 5 remote from the axis P of the spinning chamber over the length of the channel from the position where the fibers are doffed from the opening roller 3 to the outlet 12, and the cross-sectional shape of the channel is changed gradually to a rounded triangular shape toward the spinning chamber 4 over the length of the channel.
  • the change in the cross-sectional shapes is clearly shown in FIGS. 4 and 5.
  • the shape of the channel at a section D adjacent the doffing position is indicated at D in FIG. 5. From this point, the cross-sectional area is reduced progressively and more rapidly, and the cross-sectional shape is changed, progressively and axially asymmetrically, toward the outlet 12 as indicated at E, F, G in FIG. 5.
  • the channel 5 has a rounded triangular cross-sectional shape at the section G or outlet 12, as stated above. Air is sucked through the channel 5 by the rotation of the rotary spinning chamber 4 as in the conventional apparatus. The force of suction developed in the channel 5 is equalized in the widthwise direction of said channel, owing to the construction of the channel as described above, and therefore, the mixture ratio of fiber and air in the channel is made uniform.
  • the construction of the channel described above is also advantageous in improving the air velocity characteristic in the longitudinal direction of the channel. Namely, with the proposed construction of the channel, it is possible to avoid the disadvantage of the conventional apparatus that the velocity of air decreases temporarily at the portion immediately behind the projectin'g portion of the opening roller 3 where the cross sectional area becomes relatively larger than at the portion of the projecting opening roller, and thereby to obtain the desirable effect that the linearity of the fibers is not impaired (FIG. 6).
  • the outlet of the channel is rectangular in cross-sectional shape and there has been the disadvantage that the fibers emerging from the outlet are respectively carried by air flows of different velocities V V V V and arrive at the inner wall of the spinning chamber with substantial time lags
  • the outlet 12 of the channel 5 is very small in width so that all fibers emerging from the outlet are subjected to the actions of air flows having little velocity difference and carried over substantially the same distances to reach the inner wall of the spinning chamber. This is highly advantageous for the formation of an even spun yarn.
  • the advantage of the apparatus of this invention will become more apparent by progressively reducing the width of the lower wall of the channel 5 toward the spinning chamber .
  • the saw tooth wires 9 are wound on the opening roller 3 in a counterclockwise direction, and reducing the width of the upper wall of the same when the saw tooth wires 9 are wound in a clockwise direction, so as thereby to reduce the crosssectional area of the channel progressively toward the spinning chamber 4.
  • the opening roller 3 is shown as having the saw tooth wires 9 wound around the peripheral surface thereof in a counterclockwise direction.
  • the channel may alternatively be formed by a detachable block element of varying shape, which constitutes a part of said housing block. In this cases, it is possible to change the degree of projection of the periphery of the opening roller 3 into the channel, the
  • Reference numeral 15 designates therein pins provided on the roller housing block for securing the block element in position.
  • FIGS. 9 and 10 Examples of such detachable block element are shown in FIGS. 9 and 10, in which reference numeral 14 designates a block element and 17 designates pin holes in which the pins 15 on the roller housing block are to be received when the block element is secured to the housing block.
  • the detachable part or element 14 of the roller housing block is removed and the selected block element is fixed on the housing block in place of the removed part 14, with the pins 15 inserted into the respective pin holes 17, whereby a fiber transfer channel of the desired shape can be formed between the confronting faces 16 of the housing block and the detachable block element fixed thereto.
  • a ringless spinning apparatus comprising a feed roller rotatable about its axis for feeding fibrous materials, an opening roller rotatable about its axis and provided with a plurality of saw-tooth wires wound circumferentially around the peripheral surface thereof for opening the fibrous materials fed by said feed roller, channel means arranged adjacent said peripheral surface for taking off the opened fibrous materials from said opening roller and transferring them by the action of a jet of air passing therethrough, and a rotary spinning chamber for collecting and spinning the opened fibrous materials transferred thereinto from said channel means, wherein the latter converges toward said spinning chamber by a taper in at least one of the upper and lower walls thereof, and wherein the crosssectional area of said channel means is smaller at a portion remote from the axis of said spinning chamber than ata portion closer to said axis, to thereby form a rounded triangular cross-sectional shape at the outlet thereof.
  • a ringless spinning apparatus comprising a feed roller rotatable about its vertical axis for feeding fibrous materials, an opening roller rotatable about its vertical axis and provided with a plurality of saw-tooth wires wound circumferentially around the peripheral surface thereof for opening the fibrous materials fed by said feed roller, channel means arranged adjacent said peripheral surface for taking off the opened fibrous materials from said opening roller and transferring them by the action of a jet of air passing therein, and a rotary spinning chamber for collecting and spinning the open fibrous materials transferred thereinto from said channel means, wherein the latter converges toward said spinning chamber by a taper in at least one of the upper and lower walls thereof, and the sectional area of said channel means is progressively reduced toward said spinning chamber at a portion on the downstream side of said opening roller, and further wherein the lower wall of said channel means is tapered toward said spinning chamber while said saw-tooth wires are wound in a counterclockwise direction.
  • a ringless spinning apparatus comprising a feed roller rotatable about its vertical axis for feeding fibrous materials, an opening roller rotatable about its vertical axis and provided with a plurality of saw-tooth wires wound circumferentially around the peripheral surface thereof for opening the fibrous materials feb by said feed roller, channel means arranged adjacent said peripheral surface for taking off the opened fibrous materials from said opening roller and transferring them by the action of a jet of air passing therein, and a rotary spinning chamber for collecting and spinning the opened fibrous materials transferred thereinto from said channel means, wherein the latter converges toward said spinning chamber by a taper in at least one of the upper and lower walls thereof, and the sectional area of said channel means is progressively reduced toward said spinning chamber at a portion on the downstream side of said opening roller, and further wherein the upper wall of said channel means is tapered toward said spinning chamber while said saw-tooth wires are wound in a clockwise direction.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Preliminary Treatment Of Fibers (AREA)
US00344035A 1972-03-27 1973-03-22 Ringless spinning apparatus Expired - Lifetime US3834148A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP3043372A JPS5214765B2 (fr) 1972-03-27 1972-03-27
JP3043472A JPS5242892B2 (fr) 1972-03-27 1972-03-27

Publications (1)

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US3834148A true US3834148A (en) 1974-09-10

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Application Number Title Priority Date Filing Date
US00344035A Expired - Lifetime US3834148A (en) 1972-03-27 1973-03-22 Ringless spinning apparatus

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US (1) US3834148A (fr)
CH (1) CH572105A5 (fr)
DE (1) DE2314666C3 (fr)
FR (1) FR2177948B1 (fr)
GB (1) GB1430474A (fr)
IT (1) IT981687B (fr)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3938310A (en) * 1973-03-08 1976-02-17 Vyzkumny Ustav Bavlnarsky Apparatus for separating fibers in open-end spinning machines
US3998040A (en) * 1974-04-03 1976-12-21 Vyzkumny Ustav Bavlnarsky Method of and apparatus for spinning yarns from staple fibers by an open-end spinning technique
US4144707A (en) * 1976-09-07 1979-03-20 Fritz Stahlecker Open end spinning assembly with an opener roll
DE2946722A1 (de) * 1979-11-20 1981-05-27 Taškentskoe special'noe konstruktorskoe bjuro tekstil'nych mašin, Taškent Faserbandverdichter fuer einrichtungen zum ringlosen spinnen
US4393648A (en) * 1980-09-11 1983-07-19 Elitex, Koncern Textilniho Strojirenstvi Fiber-guiding element for open end spinning machines
US4471608A (en) * 1981-07-28 1984-09-18 Kabushiki Kaisha Toyoda Jidoshokki Seisakusho Open-end spinning unit
US4821505A (en) * 1985-06-07 1989-04-18 Jacobsen Alan N Method and apparatus for spinning yarn
US4858423A (en) * 1987-09-12 1989-08-22 Hans Stahlecker Fiber feeding arrangement for open-end rotor spinning
US5117622A (en) * 1989-05-18 1992-06-02 Hans Stahlecker Fiber supply arrangement for open-end rotor spinning
US5333440A (en) * 1992-08-21 1994-08-02 Tns Mills, Inc. Automated spinning apparatus and process
US5755087A (en) * 1994-11-18 1998-05-26 Rieter Ingolstadt Spinnereimaschinenbau Ag Open-end rotor spinning device

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2364261C3 (de) * 1973-12-22 1982-12-23 Schubert & Salzer Maschinenfabrik Ag, 8070 Ingolstadt Faserzuführvorrichtung für eine mit Unterdruck arbeitende Offen-End-Spinnvorrichtung
CS183469B1 (en) * 1976-07-08 1978-06-30 Ludvik Fajt Method of and apparatus for conveying fibrous material in open-end rotor spinning machines
DE2800795A1 (de) * 1978-01-09 1979-07-19 Schlafhorst & Co W Faserspeisekanal fuer eine rotorspinnmaschine
JPS5727826Y2 (fr) * 1979-02-19 1982-06-17
CS249280B1 (en) 1984-09-19 1987-03-12 Frantisek Ferkl Singling out device for break spinning machine

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3434184A (en) * 1966-03-04 1969-03-25 Vyzk Ustav Bavlnarsky Apparatus for separating fibers
US3538698A (en) * 1968-08-10 1970-11-10 Vyzk Ustav Bavlnarsky Break-spinning apparatus
US3584451A (en) * 1968-12-13 1971-06-15 Vyzk Ustav Bavlnarsky Fiber processing method and device
US3591952A (en) * 1968-08-10 1971-07-13 Vyzk Ustav Bavlnarsky Open end spinning apparatus
US3785138A (en) * 1971-03-26 1974-01-15 Elitex Zavody Textilniho Spinning unit for open end spinning machine

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT264331B (de) * 1965-10-01 1968-08-26 Vyzk Ustav Bavlnarsky Vorrichtung zum Abnehmen der Fasern von der der Spinnkammer einer Luft-Spinnmaschine vorgeschalteten Auskämmwalze
AT264338B (de) * 1966-03-19 1968-08-26 Vyzk Ustav Bavlnarsky Vorrichtung zum Vereinzeln und Zuführen von Textilfasern
CH510751A (de) * 1968-11-21 1971-07-31 Vyzk Ustav Bavlnarsky Auskämmvorrichtung mit einer Kämmwalze an einer Spinnstelle einer spindellosen Feinspinnmaschine
DE2127050A1 (en) * 1970-06-02 1971-12-09 Vyzkumny ustav bavlnarsky, Usti, Orlici (Tschechoslowakei) Adjustable feed for an open-end spinner- to separate staple fibres fr

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3434184A (en) * 1966-03-04 1969-03-25 Vyzk Ustav Bavlnarsky Apparatus for separating fibers
US3538698A (en) * 1968-08-10 1970-11-10 Vyzk Ustav Bavlnarsky Break-spinning apparatus
US3591952A (en) * 1968-08-10 1971-07-13 Vyzk Ustav Bavlnarsky Open end spinning apparatus
US3584451A (en) * 1968-12-13 1971-06-15 Vyzk Ustav Bavlnarsky Fiber processing method and device
US3785138A (en) * 1971-03-26 1974-01-15 Elitex Zavody Textilniho Spinning unit for open end spinning machine

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3938310A (en) * 1973-03-08 1976-02-17 Vyzkumny Ustav Bavlnarsky Apparatus for separating fibers in open-end spinning machines
US3998040A (en) * 1974-04-03 1976-12-21 Vyzkumny Ustav Bavlnarsky Method of and apparatus for spinning yarns from staple fibers by an open-end spinning technique
US4144707A (en) * 1976-09-07 1979-03-20 Fritz Stahlecker Open end spinning assembly with an opener roll
DE2946722A1 (de) * 1979-11-20 1981-05-27 Taškentskoe special'noe konstruktorskoe bjuro tekstil'nych mašin, Taškent Faserbandverdichter fuer einrichtungen zum ringlosen spinnen
US4393648A (en) * 1980-09-11 1983-07-19 Elitex, Koncern Textilniho Strojirenstvi Fiber-guiding element for open end spinning machines
US4471608A (en) * 1981-07-28 1984-09-18 Kabushiki Kaisha Toyoda Jidoshokki Seisakusho Open-end spinning unit
US4821505A (en) * 1985-06-07 1989-04-18 Jacobsen Alan N Method and apparatus for spinning yarn
US4858423A (en) * 1987-09-12 1989-08-22 Hans Stahlecker Fiber feeding arrangement for open-end rotor spinning
US5117622A (en) * 1989-05-18 1992-06-02 Hans Stahlecker Fiber supply arrangement for open-end rotor spinning
US5333440A (en) * 1992-08-21 1994-08-02 Tns Mills, Inc. Automated spinning apparatus and process
US5755087A (en) * 1994-11-18 1998-05-26 Rieter Ingolstadt Spinnereimaschinenbau Ag Open-end rotor spinning device

Also Published As

Publication number Publication date
DE2314666B2 (de) 1976-05-26
DE2314666C3 (de) 1981-04-09
GB1430474A (en) 1976-03-31
FR2177948A1 (fr) 1973-11-09
FR2177948B1 (fr) 1976-04-09
CH572105A5 (fr) 1976-01-30
DE2314666A1 (de) 1973-10-11
IT981687B (it) 1974-10-10

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