US3487626A - Air circulation arrangement for spinning apparatus - Google Patents

Air circulation arrangement for spinning apparatus Download PDF

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Publication number
US3487626A
US3487626A US697563A US3487626DA US3487626A US 3487626 A US3487626 A US 3487626A US 697563 A US697563 A US 697563A US 3487626D A US3487626D A US 3487626DA US 3487626 A US3487626 A US 3487626A
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United States
Prior art keywords
air
spinning chamber
chamber
spinning
fibers
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Expired - Lifetime
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US697563A
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English (en)
Inventor
Jaroslav Rajnoha
Ladislav Bures
Premysl Vorisek
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
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Vyzkumny Ustav Bavlnarsky AS
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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

  • the present invention relates to spinning apparatus in which a spinning chamber having an inlet and an outlet is rotated so that air is sucked into the inner cavity of the spinning chamber and discharged through the outlet by the centrifugal force. Fibers entrained in the air entering the cavity are spun into a rope of yarn which is withdrawn along the axis of rotation of the spinning chamber.
  • a combing roller forms fibers of a supplied sliver, and orients the same while transporting the fibers into the air inlet duct which leads into the cavity of the spinning chamber.
  • spinning apparatus of this type air is continuously sucked into the spinning chamber and discharged from the same while the fibers are retained in the spinning chamber.
  • the air discharged from the spinning chamber is guided by exhaust channels which pass through the spinning apparatus and then under the floor of the room in which the spinning apparatus is located to a discharge area. The building and cleaning of the exhaust channels is fairly expensive.
  • the filter would be gradually covered with dust so that the stream of air entering the apparatus would encounter great resistance. Furthermore, a suitable filter to prevent the entry of foreign bodies into the supply channel and spinning chamber, the filter would be gradually covered with dust so that the stream of air entering the apparatus would encounter great resistance. Furthermore, a suitable filter to prevent the entry of foreign bodies into the supply channel and spinning chamber, the filter would be gradually covered with dust so that the stream of air entering the apparatus would encounter great resistance. Furthermore, a suitable filter to prevent the entry of foreign bodies into the supply channel and spinning chamber, the filter would be gradually covered with dust so that the stream of air entering the apparatus would encounter great resistance. Furthermore, a suitable filter to prevent the entry of foreign bodies into the supply channel and spinning chamber, the filter would be gradually covered with dust so that the stream of air entering the apparatus would encounter great resistance. Furthermore, a suitable filter to prevent the entry of foreign bodies into the supply channel and spinning chamber, the filter would be gradually covered with dust so that the stream of air entering the apparatus would encounter great resistance. Furthermore, a suitable filter to prevent the entry of foreign bodies into the supply channel
  • Another disadvantage of the prior art is that some fibers which are not utilized for the formation of the spun yarn, escape from the spinning chamber through 3,487,626 Patented Jan. 6, 1970 It is one object of the invention to provide an air circulation arrangement for a spinning apparatus which re circulates the same air which has passed through the spinning chamber.
  • Another object of the invention is to entrain the fibers supplied to the spinning chamber in clear and dust-free air.
  • Another object of the invention is to use all fibers supplied to the spinning chamber for the spun yarn, and to prevent escape and wasting of fibers together with the air discharged from the spinning chamber.
  • the present invention provides a spinning chamber with a conduit connecting the outlet ducts of the spinning chamber with the inlet of the same so that the air which carries the fibers into the spinning chamber is continuously recirculated along a closed path.
  • One embodiment of the invention comprises a spinning chamber formed with an inner cavity having an inlet, and an outlet radially outward of the inlet, conduit means outside of the cavity connecting the outlet with the inlet, and feeding means for feeding fibers into the conduit means.
  • the centrifugal force drives the air out of the spinning chamber through the outlet, and sucks air, together with fibers, into the inlet of the cavity of the spinning chamber. Since the conduit means and the spinning chamber form a closed endless path, air continuously circulates through the conduit means and the spinning chamber, being mixed with new fibers every time before entering the inlet of the spinning chamber.
  • the air which carries the fibers is free of dust and foreign particles, and no exhaust channels have to be provided for the spinning apparatus.
  • the conduit means includes a housing and a dished cover detachably secured to the housing.
  • the spinning chamber is partly located in a recess of the housing, and partly located within the dished cover so that an annular air chamber communicating with the outlet of the spinning chamber is formed in the cover.
  • the housing is formed with a conduit portion communicating with the annular air chamber and with the inlet of the spinning chamber so that air discharged through the outlet of the spinning chamber enters the annular air chamber, flows through the inlet conduit portion of the housing and through the inlet into the cavity of the spinning chamber.
  • the housing has a supply passage in which a supply roller transporting a sliver is located, and widens to receive a combing roller which forms separated fibers of the supplied sliver and has a peripheral portion located in a lateral opening of the conduit portion in the housing to transport oriented fibers into the airstream flowing through the inlet conduit portion into the inlet of the spinning chamber.
  • the cover is detachably attached to the housing so that by removing the cover, the spinning chamber, and also the conduit portion in the housing become accessible for cleaning and servicing.
  • FIG. 1 is a side view, partially in section, illustrating an embodiment of the invention.
  • FIG. 2 is a fragmentary sectional view illustrating a part of the embodiment shown in FIG. 1 on a larger scale.
  • a spinning chamber 4 is secured to a shaft 3 carrying a pulley connected by an endless belt 23 with a drive pulley connected by an endless belt 23 with a drive pulley of a motor, not shown, so that the spinning chamber is rotated.
  • Shaft 3 of spinning chamber 2 is suspended on a frame wall 1 having a bearing for shaft 3.
  • Spinning chamber 4 has a frusto-conical cavity 4a and a peripheral wall 4b forming a central opening 40.
  • Outlet ducts 5 connect the cavity 4a with the outer peripheral surface of the circular wall 412.
  • a circular fiber collecting face 15 is located in the region of the greatest diameter of the cavity 4a of the spinning chamber.
  • the inner ends of the outlet ducts 5 are located radially inward of the circular fiber colecting face 15, while the outer ends of the outlet ducts are located radially outwardly of the same.
  • a dished cover 6 has a flange detachably secured by bolts and nuts 11 to a corresponding flange of the housing 10, and a sealing means 12 is located between the abutting faces of cover 6 and housing 10.
  • the upper portion of the spinning chamber 4 is located within the space formed by cover 6, so that an annular air chamber surrounds the outlet ducts 5 of Spinning chamher 4.
  • Housing has a circular portion 10a projecting into the central opening 40 and defining a narrow gap with the peripheral wall 412.
  • Projection 10a is surrounded by a circular groove 10b receiving the lower portion of the peripheral wall 412.
  • a conduit portion 13 in housing 10 has one end 16 communicating with the annular air chamber 5 through an outlet opening 17, and a gradually tapering other end having an outlet 14 opening into the annular inlet of cavity 4a formed by the annular gap 40.
  • the outlet 14 of the conduit portion 13 is located inwardly of the fiber collecting surface 5, and spaced substantially the same radial distance from the axis of rotation of spinning chamber 4 as the inner end of outlet ducts 5.
  • Housing 10 also has a supply conduit 24 leading to a supply roller 9 rotating in counterclockwise direction for transporting a sliver 24a to a circular enlargement 24b of supply duct 24 in which a combing roller 8 rotates in counterclockwise direction.
  • the shafts of rollers 9 and 8 are driven by suitable drive means, not shown.
  • a peripheral portion 8a of combing roller 8 is located in a lateral opening 13a of conduit portion 13.
  • the rotating combing roller 8 separates the fibers of sliver 24a and transports the fibers into the inlet conduit portion 13 so that the fibers are entrained in air flowing in the direction of the arrow 30 and enter the cavity 4a through the outlet 14 of inlet conduit portion 13.
  • the span rope of yarn produced by the rotating spinning chamber 4 is withdrawn through .a channel 26 coaxial with the rotary spinning chamber by a pair of transporting rollers 18 which transport the spun yarn to a winding mechanism including a winding roller 21 and a bobbin 20.
  • OPERATION Supply roller 9 and combing roller 8 are driven in counterclockwise direction by a motor, not shown, while spinning chamber 4 is rotated by the pulley and belt drive 23.
  • a sliver 24a supplied into passage 24 is transported by supply roller 9 to combing roller 8 whose peripheral surface is preferably covered with wire cloth so that fibers are separated from the sliver and carried into the inlet conduit portion 13.
  • Rotation of the spinning chamber causes rotation of the air in cavity 4a so that the centrifugal force drives the air out of cavity 4a and through outlet ducts 5 into the annular chamber 5 so that suction is created in the cavity 4a, while air is driven in the direction of the arrow 30 from the annular chamber 5 through openings 17 and 16 into the inlet conduit portion 13 so that the fibers supplied by combing roller 8 are entrained in the airstream and enter the inner cavity 4.
  • the air flows in the inner cavity 4a in the direction indicated by the arrow 31 into the inner ends of outlet ducts 5 while the fibers accumulate along the rotating circular collecting face 15 which is located radially outwardly of the path 31 of air flowing through cavity 4a.
  • the air is again recirculated through cavity 4a, annular chamber 5, and conduit portion 13, carrying fibers produced by combing rollers 8 into the spinning chamber and leaving the same without the fibers.
  • Fibers collect in the region of the greatest diameter of cavity 4a along the fiber collecting face 15 and are spun in a manner well known to those skilled in the art into a yarn withdrawn through the central passage 26 by the pair of transporting rollers 18. It is evident that the pressure in the annular chamber 5 is greater than the pressure in cavity 4a and in the conduit portion 13 so that continuous circulation of air is assured. Channel 26 for the spun yarn 19 is located beyond the end of combing roller 8.
  • Air circulation arrangement for spinning apparatus comprising, in combination, a spinning chamber driven to rotate about an axis of rotation and being formed with an inner cavity having an inlet and at least one outlet radially outward of said inlet; conduit means connecting said outlet with said inlet and forming with said inner cavity of said spinning chamber a closed path for the circulation of air, said conduit means forming with said spinning chamber a space in which said outlet rotates and including a conduit portion having one end connected with said space and the other end connected with said inlet so that air driven by the action of the centrifugal force out of said outlet into said space flows from said one end of said conduit portion and into said inlet, and is continuously circulated along said closed path; and feeding means for feeding fibers into said conduit portion so that the air stream flowing in the same entrains the fibers and transports the same through said inlet into said chamber Where a yarn is spun of the fibers while the air flows out of said outlet and through said space and said conduit portion, and is recirculated through said spinning chamber with new fibers entrained there
  • Air circulation arrangement as claimed in claim 1 wherein said space includes an annular air chamber surrounding said spinning chamber in the region of said outlet to receive air discharged from the same, said conduit portion having one end opening into said air chamber.
  • Air circulation arrangement as claimed in claim 3 wherein said feeding roller is a combing roller, and comprising a supply roller for supplying a sliver through said supply passage to said combing roller.
  • Air circulation arrangement as claimed in claim 2 wherein said spinning chamber has an outer peripheral surface; wherein said outlet includes a plurality of outlet ducts uniformly spaced about said peripheral surface and surrounded by said annular air chamber.
  • Air circulation arrangement as claimed in claim 5 wherein said cavity of said spinning chamber has a frustoconical inner surface having in the region of the greatest diameter thereof a circular collecting face for collecting and spinning fibers, wherein said outlet ducts have inner ends located radially inward of said collecting face and outer ends located radially outward of the same; and wherein said inlet is located radially inward of said collecting face so that air fiows from said inlet to said inner ends of said outlet ducts along a path inward of said collecting face and of fibers deposited thereon.
  • said conduit means includes a housing and a cover attached to said housing; wherein said cover forms with said housing said space in which said spinning chamber is located so that an annular air chamber communicating with said outlet is formed in said space; wherein said housing is formed with said conduit portion having said one end communicating with said annular air chamber and said other end opening into said inlet so that air discharged through said outlet into said annular air chamber flows through said conduit portion and through said inlet into said cavity of said spinning chamber.
  • saidtspinning chamber has a peripheral circular wall having a central opening forming said inlet into said cavity; wherein said housing has a circular projection into said central opening, and a circular recess surrounding said circular projection and receiving the lower portion of said peripheral circular wall; wherein said other end of said conduit portion is located in said circular projection; and wherein said cover is dished to receive the upper portion of said peripheral circular Wall.
  • Air circulating arrangement as claimed in claim 7 wherein said conduit portion is formed with a lateral opening between said ends; wherein said housing is formed with a supply passage for a sliver; wherein said feeding means includes a combing roller located in said supply passage and having a peripheral portion located in said lateral opening of said conduit portion, and a supply roller in said supply passage for transporting the sliver to said combing roller.
  • Air circulating arrangement as claimed in claim 7 wherein said spinning chamber has an outer peripheral surface; wherein said outlet includes a plurality of outlet ducts uniformly spaced about said peripheral surface and surrounded by said annular air chamber.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
US697563A 1967-01-07 1968-01-08 Air circulation arrangement for spinning apparatus Expired - Lifetime US3487626A (en)

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Application Number Priority Date Filing Date Title
CS15767 1967-01-07

Publications (1)

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US3487626A true US3487626A (en) 1970-01-06

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US (1) US3487626A (da)
AT (1) AT269698B (da)
BE (1) BE698863A (da)
CH (1) CH462683A (da)
DE (1) DE1710043A1 (da)
ES (1) ES340206A1 (da)
GB (1) GB1157297A (da)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3777466A (en) * 1969-05-16 1973-12-11 Vyzk Ustav Bavlnarsky Method of removing impurities and similar matter from staple fibres in ringless spinning and device for performing said method
US3797218A (en) * 1969-03-20 1974-03-19 Schubert & Salzer Maschinen Method and apparatus for spinning sliver
US3884029A (en) * 1972-06-08 1975-05-20 Vyzk Ustav Bavlinarsky Apparatus for ringless spinning of fibres
US3948031A (en) * 1973-07-02 1976-04-06 Instytut Wlokiennictwa Duct for feeding fibers to a pneumatic spinning chamber having a stationary whirl
US3974635A (en) * 1973-09-03 1976-08-17 Daiwa Boseki Kabushiki Kaisha Feed roller for feeding fibers to a combing roller in an open end spinning machine
US4154052A (en) * 1978-02-08 1979-05-15 Dixie Yarns, Inc. Automatic cleaning system for open-end spinning apparatus

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1127310B (de) * 1960-08-06 1962-04-12 Inst Waelzlager Und Normteile Vorrichtung zum Wickeln von Federn
DE3207136C2 (de) * 1982-02-27 1994-03-17 Schlafhorst & Co W Verfahren und Vorrichtung zum Herstellen eines Fadens durch Offen-End-Spinnen

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3360917A (en) * 1965-12-07 1968-01-02 Vyzk Ustav Bavlnarsky Fiber feeding device for a rotary spinning chamber
US3370413A (en) * 1965-11-16 1968-02-27 Vyzk Ustav Bavlnarsky Spinning device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3370413A (en) * 1965-11-16 1968-02-27 Vyzk Ustav Bavlnarsky Spinning device
US3360917A (en) * 1965-12-07 1968-01-02 Vyzk Ustav Bavlnarsky Fiber feeding device for a rotary spinning chamber

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3797218A (en) * 1969-03-20 1974-03-19 Schubert & Salzer Maschinen Method and apparatus for spinning sliver
US3777466A (en) * 1969-05-16 1973-12-11 Vyzk Ustav Bavlnarsky Method of removing impurities and similar matter from staple fibres in ringless spinning and device for performing said method
USRE30709E (en) * 1969-05-16 1981-08-18 Vyzkumny Ustav Bavlnarsky Method of removing impurities and similar matter from staple fibres in ringless spinning and device for performing said method
US3884029A (en) * 1972-06-08 1975-05-20 Vyzk Ustav Bavlinarsky Apparatus for ringless spinning of fibres
US3948031A (en) * 1973-07-02 1976-04-06 Instytut Wlokiennictwa Duct for feeding fibers to a pneumatic spinning chamber having a stationary whirl
US3974635A (en) * 1973-09-03 1976-08-17 Daiwa Boseki Kabushiki Kaisha Feed roller for feeding fibers to a combing roller in an open end spinning machine
US4154052A (en) * 1978-02-08 1979-05-15 Dixie Yarns, Inc. Automatic cleaning system for open-end spinning apparatus

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Publication number Publication date
GB1157297A (en) 1969-07-02
BE698863A (da) 1967-11-03
CH462683A (de) 1968-09-15
AT269698B (de) 1969-03-25
ES340206A1 (es) 1968-06-01
DE1710043A1 (de) 1971-04-08

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