US3775957A - Rotary spinning chamber for an open-end spinning machine - Google Patents

Rotary spinning chamber for an open-end spinning machine Download PDF

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Publication number
US3775957A
US3775957A US00242369A US3775957DA US3775957A US 3775957 A US3775957 A US 3775957A US 00242369 A US00242369 A US 00242369A US 3775957D A US3775957D A US 3775957DA US 3775957 A US3775957 A US 3775957A
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United States
Prior art keywords
spinning chamber
air
bottom wall
spinning
chamber
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Expired - Lifetime
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US00242369A
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English (en)
Inventor
H Kihara
K Tsuzuki
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Toyota Industries Corp
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Toyoda Automatic Loom Works Ltd
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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
    • D01H4/10—Rotors

Definitions

  • ABSTRACT A rotary spinning chamber for an open-end spinning machine.
  • the chamber has a bottom wall secured to a shaft for rotatably driving the spinning chamber, the bottom wall extending substantially perpendicularly to the shaft.
  • a collecting surface is formed adjacent to and surrounding the outer periphery of the inner surface of the bottom wall for collecting fibers fed into the spinning chamber through a fiber feeding conduit.
  • a plurality of air exhaust channels is provided for exhausting the air inside the spinning chamber for reducing the air pressure inside the spinning chamber to create an air flow through the fiber feeding conduit toward the interior of the spinning chamber.
  • each of said exhaust channels has the air inlet opening thereof located in the inner surface and the air outlet opening thereof located in an outer peripheral surface of the spinning chamber at a position located radially outwardly of the air inlet opening.
  • a rotary spinning chamber serving as a fast-rotating rotor.
  • the rotary spinning chamber comprises a bottom wall secured to a shaft for rotatively driving the spinning chamber and extending substantially perpendicularly to said shaft, a collecting surface formed adjacent to and surrounding an outer periphery of an inner surface of the bottom wall for collecting fibers fed into the spinning chamber through a fiber feeding conduit, and a plurality of air exhaust channels for exhausting the air inside the spinning chamber forreducing the air pressure inside the spinning chamber to create an air flow through said fiber feeding conduit toward inside the spinning chamber.
  • an air inlet opening of the exhaust channel is located in an inclined surface which forms a recess at the central portionof the inner surface of the bottom wall.
  • the spinning chamber in current use has another drawback.
  • This drawback consists in that the air exhaust channel has a relatively high air exhaust resistance. That is, since the area of the inlet opening of the air exhaust channel located in said inclined surface is only as large as or slightly larger than the sectional area of the air exhaust channel in a place perpendicular to an axis thereof, the inlet opening present a high resistance against the air flowing into the air exhaust channel.
  • a main object of the present invention is to provide an improved rotary spinning chamber.
  • the object of the present invention is to provide a rotary spinning chamber wherein the inner surface of the bottom wall gradually bulges in the axial direction of the driving shaft toward inside the spinning chamber as the center of said inner surface is approached, and each of the air exhaust channels has its air inlet opening located in said inner surface and its air outlet opening located in an outer peripheral surface of the spinning chamber at a position located radially outwardly of the air inlet opening.
  • Another object of the present invention is to provide a rotary spinning chamber of the above mentioned nature, wherein the air inlet opening of each air exhaust channelis located in a position lagged from the airinlet opening of the same air exhaust channel as viewed in the direction of rotation of the spinning chamber.
  • the short fibers and foreign matter are smoothly moved toward the inlet openings of the air exhaust channels along with the air without being strongly pressed against the inner surface of the bottom wall, thereby the deposition of the cotton wax onto said inner surface is eliminated and accumulation of the short fibers and foreign matter is also prevented.
  • each air exhaust channel since the airinlet opening of each air exhaust channel is located in said bulged inner surface of the bottom wall, the area of the air inlet opening becomes much larger than that of the prior spinning chamber, thereby the resistance against the air flowing into the air inlet opening is substantially decreased.
  • each air exhaust channel is located in aposition lagged from the air inlet opening of the same air exhaust channel as viewed in the direction of rotation of the spinning chamber, i.e., the air inlet openingis located in advance of the air outlet opening as viewed in the direction of rotation of the spinning chamber, the resistance against the air flow in the air exhaust channel is substantially decreased.
  • FIG. 1 is an axial sectional view of a prior rotary spinning chamber, a frame body surrounding the spinning chamber and a closure plate for closing an open side of the spinning chamber;
  • FIG. 2 is an axial sectional view of an embodiment of the rotary spinning chamber according to the present invention.
  • FIG. 3 is a perspective view of the spinning chamber as shown. in FIG. 2;
  • FIG. 4 is an axial sectional view of another embodiment of the rotary spinning chamber according to the present invention.
  • FIG. is a plan view of yet another embodiment of the rotary spinning chamber according to the present invention.
  • the spinning chamber 1 comprises a bottom wall ,4 which is secured to a shaft 3 which in turn is rotatably supported from a supporting member 2 through a bearing (unnumbered).
  • the bottom wall 4 extends substantially perpendicularly to the shaft 3 as seen in FIG. 1.
  • the shaft 3 is connected to a suitable driving source to rotatively drive the spinning chamber l.
  • the reference numeral 6 designates an inner surface of the bottom wall 4 which is surrounded by a collecting surface 5 formed at the largest inner diameter portion of the spinning chamber 11 and adjacent to and as a continuation of an outer periphery of said inner surface 6.
  • the spinning chamber 1 further comprises a plurality of air exhaust channel 8 which has its air inlet opening '7 opened into a space inside the spinning chamber and its air outlet opening 9 located in an outer peripheral surface of the spinning chamber 1.
  • the top opening of the spinning chamber 1 is closed by a fixed closure 10, to which are attached a fiber feeding conduit 11 and a yarn withdrawing tube 12, the outlet of said conduit 111 being directed toward said inner collecting surface 5.
  • the spinning chamber 1 is surrounded by a frame body 13, and a pipeline 14 connected to a part of the frame body 13 is connected to a suction source (not shown).
  • the rotary spinning chamber which receives fibers delivered from the fiber feeding conduit llll, functions to form a yarn on the inner collecting surface 5 in known manner. The yarn thus formed, i.e., spun yarn is withdrawn outside the spinning chamber ll through said yarn withdrawing tube 12.
  • the sucking action of the pipeline 14 and the exhaust action of the exhaust channels 8 cooperate to establish a reduced pressure state in the spinning chamber 1, so that there is created an air flow through the fiber'feeding tube 11 toward inside the spinning chamber ii and the fibers in the fiber feeding conduit lll are entrained by the air flow and delivered toward the collecting surface 5.
  • the fibers thus delivered will deposite onto the collecting surface 5 due to the centrifugal force, but the air will flow toward the air inlet openings 7 of the air exhaust channels 8.
  • the air flowing toward said air inlet opening 7 is entraining short fibers and foreign matter therein. As is seen in FIG.
  • the bottom wall 4 of the spinning chamber 1 is centrally provided with a recess 15, which is defined by a flat surface 116 and an inclined surface 16'.
  • the air inlet openings 7 of said air exhaust channels 8 are located in said inclined surface 16'.
  • the area of the air inlet opening 7 is only slightly larger than the crosssectional area of the air exhaust channel 8 in a plane perpendicular to the axis of the same. Therefore, the air inlet openings 7 of the air exhaust channels 8 present relatively high resistance against the air flowing therethrough, decreasing the air exhausting efficiency.
  • the reference numeral 1 designates a rotary spinning chamber, 3 a drive shaft, 4 a bottom wall, 5 a collecting surface, 6 an inner surface of the bottom wall 4, 8 an air exhaust channel, 7 an air inlet opening and 9 an air outlet opening. And also in this embodiment, the bottom wall 4 of the spinning chamber 1 is secured to the drive shaft 3 substantially perpendicularly thereto.
  • the inner surface 6 of the bottom wall 4 gradually bulges in the axial direction of the driving shaft 3 toward inside the spinning chamber 1 as the center of said inner surface 6 is approachedln other words, the height of the inner surface 6 of the bottom wall 4 as determined from a plane perpendicular to the axis of the driving shaft 3 and passing through the bottom of the collecting surface 5 is largest at the center of said inner surface 6 and graudally decreases toward the collecting surface 5.
  • the bulged inner surface 6 of the bottom wall 4 is constituted by a curved surface of a fixed radius.
  • said air inlet opening 7 is located in the bulged inner surface 6 of the bottom wall 4 and said air outlet opening 9 is located in an outer peripheral surface of the spinning chamber 1 at a position located radially outwardly of the air inlet opening 7.
  • the air exhaust channel 8 is straight in this embodiment.
  • the short fibers and foreign matter entrained in the air flowing into the spinning chamber 1 through the fiber feeding conduit 11 are planarly guided along the bulged smooth inner surface 6 toward the air inlet openings 7 of the air exhaust channels 8 so that they can smoothly and easily flow into the air inlet openings 7. There may happen that some of the short fibers and foreign matter pass over the areas between any adjacent air inlet openings 7 and deposit around the center of the inner surface 6 of the bottom wall 4.
  • an edge 7' of the air inlet opening 7 located closer to the center of the inner surface 6 than the other edge 7 is located at a higher level than said the other edge 7 as determined from the plane perpendicular to the drive shaft 3 and passing through the bottom of the collecting surface 5. Therefore, when the short fibers and foreign matter deposited around the center of the inner surface 6 of the bottom wall 4 are forced to move towardthe collecting surface 5 due to large centrifugal force, they pass over said the other edge 7 directly to the collecting surface 5 without engaging with said the other edge 7". When the centrifugal force is small, the short fibers and foreign matter deposited around. thecenter of the inner surface 6 are sucked smoothly into the air exhaust channels 8 through the air inlet openings 7 thereof by a strong air flow flowing into the air exhaust channel 8. Thus in either case, there occurs no accumulation of the short fibers and foreign matter.
  • the air exhaust channel 8 is directed radially outwardly, the area of the air inlet opening 7 of the air exhaust channel 8 is necessarily substantially larger than; the cross-sectional area of the air exhaust channel 8 in a plane perpendicular to the axis thereof.
  • the area of the air inlet opening 7 is much increased, and therefore, not to mention air, even short fiber and foreign matter can enter the air inlet opening 7 extremely smoothly and easily.
  • FIG. 4 Another embodiment of the present invention is shown in FIG. 4.
  • This embodiment is almost same as the embodiment shown in FIGS. 2 and 3. Only difference is that the bulged inner surface 6 of the bottom wall 4, in this embodiment, is constituted by a cone shaped surface rather than a curved surface.
  • the perspective view of this embodiment is similar to the one of the first embodiment shown in FIG. 3 except that the shape of the air inlet openings 7 of the air exhaust channels 8 is slightly varied.
  • This embodiment provides the same advantages or merits as obtainable by the first embodiment shown in FIGS. 2 and 3, i.e., elimination of accumulation of the short fibers and foreign matter on the inner surface 6 of the bottom wall 4, and reduction of resistance of the air inlet openings 7 of the air exhaust channel 8 against the air flowing into the same.
  • This embodiment -provides further advantage or merit that the bulged surface of the cone shape is much easier to produce than the curved bulged surface.
  • FIG. 5 A still further embodiment is shown in FIG. 5.
  • the straight air exhaust channel 8 having its air inlet opening 7 located in the bulged inner surface 6 of the bottom wall 4 and its air outlet opening 9 located in the outer peripheral surface of the spinning chamber 1 at a position located radially outwardly of the air inlet opening 7 is inclined from radial direction of the spinning chamber 1 so that the air outlet opening 9 is lagged from the air inlet opening 7 of the same air exhaust channel 8 as viewed in the direction of rotation of the spinning chamber 1.
  • the air inlet opening 7 is located in advance of the air outlet opening 9 as viewed in the direction of rotation of thespinning chamber.
  • the air and the short fiber and foreign matter entrained in the air can pass through the air exhaust channels 8 much easily, and, therefore, the possibility of deposition of theshort fibers and foreign matter onto a rear inner surface of the air exhaust channel8 as viewed in the direction of rotation of the spinning chamber 1, due to the inertia of the short fibers and the foreign matter, is much decreased.
  • the inner surface of the air exhaust channel 8 is always kept in a clean state, enhancing reduction of the resistance against airflow throughthe air exhaust channel 8.
  • a further advantage or merit obtainable by the embodiment of FIG. 5 resides in that the air inlet openings 7 are directed substantially tangentially relative to the direction of rotation of the spinning chamber 1 so that the air and the short fibers and foreign matter can easily enter into the air exhaust channels 8.
  • a rotary spinning chamber for an open-end spinning machine comprising a bottom wall secured to a shaft for rotatively driving the spinning chamber and extending substantially perpendicularly to saidshaft, a collecting surface formed adjacentto and surrounding an outer periphery of an inner surface of the bottom wall for collecting fibers fed into the spinning chamber through a fiber feeding conduit, and a plurality of air exhaust channels for exhausting the air inside the spinning chamber for reducing the air pressure inside the spinning chamber to create an airflow through said fiber feeding conduit towardinside the spinning chamber, characterized in that the inner surface of thebottom wallgradually bulges in the axial direction of the shaft toward inside the spinning chamber as the center of said inner surface is approached, and each of said exhaust channels has its air inlet opening located in said inner surface and its air outlet opening located in an outer peripheral surface of the spinning chamber at a position located radially outwardly of t the air inlet opening.
  • a rotary spinning chamber for an open-end spinning machine as claimed in claim 1 characterized in that said bulged innersurface of the bottom wall of the 7 8 spinning chamber is constituted by a cone shaped staris located in a position lagged from the air inlet opening face of the same air exhaust channel as viewed in the direc- 4.

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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)
US00242369A 1971-04-30 1972-04-10 Rotary spinning chamber for an open-end spinning machine Expired - Lifetime US3775957A (en)

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JP2926971 1971-04-30

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US (1) US3775957A (enrdf_load_stackoverflow)
CH (1) CH552079A (enrdf_load_stackoverflow)
DE (1) DE2221471C3 (enrdf_load_stackoverflow)
FR (1) FR2134705B1 (enrdf_load_stackoverflow)
GB (1) GB1349627A (enrdf_load_stackoverflow)
IT (1) IT960262B (enrdf_load_stackoverflow)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4489547A (en) * 1981-07-28 1984-12-25 Kabushiki Kaisha Toyoda Jidoshokki Seisakusho Fiber control apparatus in open end spinning frame
CN104088043A (zh) * 2014-06-11 2014-10-08 吴江龙升纺织有限公司 一种纺杯
CN104213266A (zh) * 2014-08-22 2014-12-17 东华大学 一种转杯
CN104213271A (zh) * 2014-08-22 2014-12-17 东华大学 一种转杯
CN104213273A (zh) * 2014-08-22 2014-12-17 东华大学 一种转杯
CN104213265A (zh) * 2014-08-22 2014-12-17 东华大学 一种转杯
CN104213296A (zh) * 2014-08-22 2014-12-17 东华大学 一种花式纱及其纺制方法
CN104213272A (zh) * 2014-08-22 2014-12-17 东华大学 一种转杯
CN104213268A (zh) * 2014-08-22 2014-12-17 东华大学 一种转杯
CN104278389A (zh) * 2014-08-22 2015-01-14 东华大学 一种花式纱及其纺制方法

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3227479C2 (de) * 1982-07-22 1985-07-18 Schubert & Salzer Maschinenfabrik Ag, 8070 Ingolstadt Spanlos geformter Offenend-Spinnrotor sowie Verfahren zur Herstellung eines solchen Offenend-Spinnrotors
CS254785B1 (en) * 1985-09-06 1988-02-15 Josef Stary Spinning rotor

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3163976A (en) * 1962-05-25 1965-01-05 Alsacienne Constr Meca Spinning device
US3367099A (en) * 1966-03-05 1968-02-06 Vyzk Ustav Bavinarsky Sealing arrangement for a spinning apparatus
US3411283A (en) * 1966-03-31 1968-11-19 Toyoda Automatic Loom Works In Spinning apparatus utilizing airstream
US3439487A (en) * 1967-03-09 1969-04-22 Schubert & Salzer Maschinen Spinning chamber rotor
US3440812A (en) * 1966-10-11 1969-04-29 Vyzk Ustav Barlnarsky Method and apparatus for the continuous ringless spinning of yarn from separated staple fibers in a rotating spinning chamber
US3605395A (en) * 1967-06-05 1971-09-20 Daiwa Spinning Co Ltd Method and apparatus for spinning of fibrous materials utilizing a rotary spinning chamber

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH493654A (de) * 1968-01-19 1970-07-15 Vyzk Ustav Bavlnarsky Verfahren zur Faserführung an einer Spinnstelle zum kontinuierlichen Garnspinnen und Spinnvorrichtung
FR2014959A1 (en) * 1968-08-02 1970-04-24 Parks Cramer Co Yarn breakage indicator for textile machine
DE1932658A1 (de) * 1969-06-27 1971-01-07 Zinser Textilmaschinen Gmbh Offen-End-Zentrifugenspinnvorrichtung

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3163976A (en) * 1962-05-25 1965-01-05 Alsacienne Constr Meca Spinning device
US3367099A (en) * 1966-03-05 1968-02-06 Vyzk Ustav Bavinarsky Sealing arrangement for a spinning apparatus
US3411283A (en) * 1966-03-31 1968-11-19 Toyoda Automatic Loom Works In Spinning apparatus utilizing airstream
US3440812A (en) * 1966-10-11 1969-04-29 Vyzk Ustav Barlnarsky Method and apparatus for the continuous ringless spinning of yarn from separated staple fibers in a rotating spinning chamber
US3439487A (en) * 1967-03-09 1969-04-22 Schubert & Salzer Maschinen Spinning chamber rotor
US3605395A (en) * 1967-06-05 1971-09-20 Daiwa Spinning Co Ltd Method and apparatus for spinning of fibrous materials utilizing a rotary spinning chamber

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4489547A (en) * 1981-07-28 1984-12-25 Kabushiki Kaisha Toyoda Jidoshokki Seisakusho Fiber control apparatus in open end spinning frame
CN104088043A (zh) * 2014-06-11 2014-10-08 吴江龙升纺织有限公司 一种纺杯
CN104213266A (zh) * 2014-08-22 2014-12-17 东华大学 一种转杯
CN104213271A (zh) * 2014-08-22 2014-12-17 东华大学 一种转杯
CN104213273A (zh) * 2014-08-22 2014-12-17 东华大学 一种转杯
CN104213265A (zh) * 2014-08-22 2014-12-17 东华大学 一种转杯
CN104213296A (zh) * 2014-08-22 2014-12-17 东华大学 一种花式纱及其纺制方法
CN104213272A (zh) * 2014-08-22 2014-12-17 东华大学 一种转杯
CN104213268A (zh) * 2014-08-22 2014-12-17 东华大学 一种转杯
CN104278389A (zh) * 2014-08-22 2015-01-14 东华大学 一种花式纱及其纺制方法
CN104278389B (zh) * 2014-08-22 2017-02-15 东华大学 一种花式纱及其纺制方法
CN104213271B (zh) * 2014-08-22 2017-05-17 东华大学 一种转杯
CN104213272B (zh) * 2014-08-22 2017-05-17 东华大学 一种转杯

Also Published As

Publication number Publication date
FR2134705A1 (enrdf_load_stackoverflow) 1972-12-08
FR2134705B1 (enrdf_load_stackoverflow) 1974-09-27
GB1349627A (en) 1974-04-10
CH552079A (de) 1974-07-31
DE2221471A1 (de) 1972-11-16
DE2221471C3 (de) 1981-10-08
IT960262B (it) 1973-11-20
DE2221471B2 (de) 1981-01-15

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