US3796034A - Open-end spinning apparatus - Google Patents

Open-end spinning apparatus Download PDF

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Publication number
US3796034A
US3796034A US00310793A US3796034DA US3796034A US 3796034 A US3796034 A US 3796034A US 00310793 A US00310793 A US 00310793A US 3796034D A US3796034D A US 3796034DA US 3796034 A US3796034 A US 3796034A
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United States
Prior art keywords
spinning
improvement
air outlet
fiber groove
inlet opening
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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
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US00310793A
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English (en)
Inventor
G Grau
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.)
Oerlikon Textile GmbH and Co KG
Original Assignee
Zinser Textilmaschinen GmbH
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Application filed by Zinser Textilmaschinen GmbH filed Critical Zinser Textilmaschinen GmbH
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Publication of US3796034A publication Critical patent/US3796034A/en
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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
    • D01H4/04—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 Into the rotary spinning chamber of an openend spinning apparatus there is, for cleaning purposes, periodically introduced a jet of pressurized air directed to the circumferential fiber collecting groove provided in the wall of the spinning chamber.
  • the pressurized air together with the impurities dislodged thereby, is withdrawn from the spinning chamber through an air outlet means having an annular inlet opening which is situated adjacent the fiber groove and which surrounds the rotary axis thereof.
  • This invention relates to an open-end spinning apparatus having a spinning rotor which is provided at its internal wall with a fiber collecting groove (hereinafter referred to as fiber groove).
  • the spinning rotor is disposed in a housing chamber and has an open radial face into which there extends a stationary yarn guiding body containing a yarn outlet channel.
  • the apparatus is further of the type that is provided with a blow nozzle which is connected to a pneumatic source and which serves for blowing pressurized air in the direction of the fiber groove for the purpose of cleaning the same.
  • open-end spinning apparatus for the purpose of spinning the fibers into the open-ended yarn, it is necessary to cause an air stream to travel in the yarn'outlet channel in a direction opposed to the normal advancing direction of the yarn. This air stream then flows into the inner chamber (spinning chamber) of the spinning rotor. The penumatic transportation of the opened individual fibers into the spinning chamber also causes a continuous inflow of the air thereinto.
  • This arrangement has, among others, the disadvantage that the impuritiesdislodged from the fiber groove by means of the pressurized air have to be conveyed towards the central inlet opening of the air outlet channel against the centrifugal force generated by the rotation of the spinning rotor. Consequently, in case of relatively high rotor rpms, the removal of the impurities from the spinning chamber is not reliably ensured.
  • the long flow paths of the pressurized air from the fiber groove to the central air outlet channel is in principle disadvantageous regarding the removal of the dislodged impurities from the inner chamber of the rotor, since the flow speed of the pressurized air drops substantially along its path to the air outlet channel and generates in the spinning chamber uncontrollable eddy currents which tend to substantially hinder the removal of the dislodged impurities.
  • to guide the air in the manner taught by the prior art is also disadvantageous regarding the spinning of the yarn, since for this purpose the yarn has to be carried in the spinning chamber from the yarn outlet channel to the fiber groove. Thus, there prevails the danger that this yarn does not reach the fiber groove, but is sucked out through the aforedescribed central air outlet channel.
  • the spinning rotor in the zone of its inner wall which adjoins that side of the fiber groove that is remote from the open end of the spinning rotor, has an annular inlet opening which forms part of an air outlet means and which surrounds the geometrical rotary axis of the fiber groove.
  • annular inlet openingair including the pressurized air blown into the rotor cham ber for cleaning may flow out of the spinning chamber.
  • the pressurized air blown into the spinning chamber during the cleaning of the fiber groove is admitted rapidly and securely into the air outlet.
  • the impurities dislodged by the pressurized air remain in the pressurized air stream and arrive securely and completely to the air outlet means through which they are removed from the spinning chamber.
  • Due to the short-length flow path of the pressurized air in'the inner chamber of the rotor fewer uncontrollable turbulent streams are generated therein. Consequently, higher speeds of the pressurized air stream may be used and accordingly, more thorough and more rapid cleaning of the fiber groove may be effected.
  • FIG. 1 DESCRIPTION OF THE PREFERRED EMBODIMENT
  • a housing 1 1 which defines a chamber 10 forming part of an open-end spinning apparatus, details of which that are not pertinent to the invention are not illustrated for the sake of clarity.
  • the chamber 10 accommodates a spinning rotor 9.
  • an open-end spinning machine contains a great plurality of spinning apparatuses such as illustrated inthe FIGURE and now to be described.
  • the chamber 10 is closed by means of a cover 12 which may be opened, for example, by tilting it about hinges, not shown.
  • the lid 12 At its side oriented towards the chamber 10, the lid 12 has a rotationally symmetrical projection which constitutes a yarn guiding body 13 extending into the inner chamber (spinning chamber) 16 of the spinning rotor 9 through the open radial face thereof.
  • the yarn guiding body 13 contains a throughgoing central yarn outlet channel 14 through which the spun yarn is continuously taken out and thus removed from the housing 11.
  • the cover IZ-and the yarn guiding body 13 contain, in a conventional manner, a fiber supply channel 15 through which the individual fibers are introduced into the spinning chamber 16 by virtue of an air stream.
  • the annular clearance between the inner face of the cover 12 and the annular radial edge face bounding the open side of the spinning rotor 9 is so small that practically no air may flow therethrough.
  • the cover 12 further has a bore 17 which passes through the yarn guiding body 13 spaced from the yarn outlet channel 14 and which terminates in a blow nozzle 19 opening into the spinning chamber 16.
  • the bore 17 is, in a manner not shown, connected by means of a pressure conduit to a pressurized air source (also not In general, it is sufficient to apply the pressurized air jet only after relatively long intervals (for example, every 23 days). Or, it is also expedient to effect this air blast while the spinning rotor 9 is slowing down from its operational speed to standstill.
  • a pressurized air source also not In general, it is sufficient to apply the pressurized air jet only after relatively long intervals (for example, every 23 days). Or, it is also expedient to effect this air blast while the spinning rotor 9 is slowing down from its operational speed to standstill.
  • the cleaning of the fiber groove 20 may be automatically effected when yarn break
  • Open-end spinning apparatuses are often provided with means which, upon the occurrence of yarn breakage, auto-- matically carry the yarn backwards from the yarn outlet channel to the fiber groove for restarting the spinning.
  • These means include a sensor which is responsive to the slackening of the yarn tension and which emits a signal for restarting the spinning. This signal may then be additionally used to initiate a short-period flow of pressurized air through the blow nozzle 19 onto the fiber groove 20. If the cleaning is effected upon yarn breakage, it is expedient to automatically brake the rotor, so that the cleaning operation is effected at lower than normal rotor rpms.
  • the geometrical longitudinal axis of the blow nozzle 19 is inclined to the geometrical axis of the rotor 9 and is oriented towards the fiber groove 20.
  • the outlet opening of the blow nozzle 19 is at a distance from the radial plane defined by the base of the fiber groove 20 and is disposed at that side of the aforenoted plane which is oriented towards the open end 21 of the spinning rotor 9.
  • the plane of the annular inlet opening 22 is indicated with a dash-dot line.
  • the inlet opening 22 may be rotationally symmetrical, but it is also feasible to provide a rotationally nonsymmetrical configuration therefor.
  • the inner bounding edge of the air inlet opening 22 may have a wave-shaped course.
  • the air flowing into the spinning chamber 16 may be withdrawn therefrom through the air outlet means 23 and introduced into the housing chamber 10. From the latter, the air may be taken out through one ormore air outlet channels connected in a known manner to one or more vacuum sources. Or, the air may be drawn from the chamber by an air drain generated by the rotation of the rotor 9, provided that this suction effect is sufficient to generate the required flow rate.
  • the air that is admitted to the spinning chamber 16 through the fiber supply channel and the yarn outlet channel 14 and the pressurized air admitted to the spinning chamber 16 for the cleaning of the fiber groove are both withdrawn through the air outlet means 23.
  • the air outlet means 23 is constituted by a clearance between two spaced components 24 and 25 forming the spinning rotor 9.
  • the rotationally symmetrical, generally ring-shaped component 24 forms 'a circumferential wall which contains the fiber groove 20.
  • the rotationally symmetrical, generally disc-shaped component 25 of the rotor 9 forms a radial wall portion which is held at-a distance'from the component by spacers 26 which are traversed by bolts 27 securing the components 24 and 25 firmly to one another.
  • a solid rotor shaft 28 which is supported in the housing 11 in a manner not shown and is driven externally of the housing 11 by means (also not shown) such as a tangential drive belt assembly.
  • the inlet opening 22 of the outlet means 23 begins very close to the fiber groove 20 (for example, at a distance of approximately 2 mm) and has the configuration of an annulus, the plane of which is normal to the rotary axis of the rotor 9.
  • the arrangement of the inlet opening 22 in the immediate vicinity of the fiber groove 20 is particularly advantageous in case of yarn breakage, since the aforediscussed backward transportation of the yarn from the yarn outlet channel to the fiber groove 20 is not hindered by the pressurized air jet. This is so because the pressurized air leaves the spinning chamber 16 immediately from the fiber groove 20 and is thus not admitted to the vicinity of the yarn outlet channel 14.
  • the rotor component 25 has a frustoconical elevation 29 which is rotationally symmetrical with respect to the rotary axis of the rotor 9 and the radial face of which is disposed at a small distance (for example, 4 5 mm) from the yarn guiding body 13. This clearance provides for the yarn which is formed during the spinning, a passage from the fiber groove 20 to the yarn outlet channel 14.
  • the fiber groove 20 is joined in the direction of the air outlet means 23 by a convex, rotationally symmetrical wall portion 30 of the rotor component 24.
  • the wall portion 30 is shaped in such a manner that the inner diameter of the rotor component 24 continuously decreases from the base of fiber groove 20 until a location which is situated 1 2 mm within the air outlet 23 across the inlet opening 22.
  • the wall face 30 has an approximately funnel-shaped, rotationally symmetrical configuration. This design of the zone 30 is particularly advantageous to obtain an effective, rapid air flow that leaves the remainder of the spinning chamber 16 unaffected.
  • a frustoconical projection 29 which is disposed radially inwardly spaced from the zone 30, there is obtained at a short partial zone 31 of the air outlet means 23 a funnel-like cross section that adjoins the inlet opening 22.
  • This short zone 31 of the air outlet 23 extends practically parallel to the geometrical rotary axis of the rotor 9.
  • the zone 31 continues in a zone 32 of the outlet channel 23.
  • the zone 32 extends radially outwardly to the outer circumference of the spinning rotor 9 and is divided into several outlet portions by the spacers 26 in the zone thereof. For example, five spacers 26 may be provided which reduce the total cross section of the air outlet 23 only in an insubstantial manner in their zone. 5
  • the outlet opening 35 of the air outlet means 23 is at a greater radial distance from the rotor axis than the outer edge of the inlet opening 22, so that the impurities which are blown into the air outlet means 23 during the cleaning of the fiber groove 20 are rapidly and securely transported into the chamber surrounding the rotor 9 with the aid of centrifugal forces imparted thereon.
  • the air outlet means 23 may be provided with impeller vanes (not shown). Or, in the rotor wall bores (also not shown) may be provided which are inclined to the rotor axis and which form channels for the air outlet means 23.
  • the impurities are removed from the chamber 10 where they can no longer have an adverse effect on the spinning operation through outlets (not shown) extending from the chamber 10.
  • the outlet opening 35 has the surface of a relatively large-diameter, relatively small-height circular cylinder.
  • the pressurized air is guided by means of the design of the inlet opening 22 and the zone 30 in such a manner that immediately downstream of the fiber groove it enters the air outlet 23 and the dislodged impurities are blown directly into the air outlet 23.
  • the design of the rotor 9 according to the invention substantially enhances the cleaning of the fiber groove, the removal of the dislodged impurities and the withdrawal of pressurized air. Also, during the normal spinning operation and for the initial spinning of fibers into the yarn it provides particularly advantageous air flow conditions in the spinning chamber 16.
  • an open-end spinning apparatus of the known type that has (a) a housing chamber, (b) a spinning rotor disposed in said housing chamber and having internal wall means and an open radial face, (c) a spinning chamber defined by said internal wall means of said spinning rotor, (d) a fiber groove provided in said internal wall means and having a base, said fiber groove dividing said wall means into a first wall portion extending between said fiber groove and said open radial face and a second wall portion separated from said open radial face by said fiber groove, (e) a stationary yarn guiding body projecting through said open radial face of said spinning rotor, (f) a yarn outlet channel provided in said stationary yarn guiding body, said yarn outlet channel communicating with said spinning chamber, (g) a blow nozzle having an opening in said spinning chamber, said blow nozzle being oriented toward said fiber groove for periodically emitting a pressurized air jet theretoward for cleaning the same, the improvement comprising air outlet means for guiding air out of said spinning chamber, said air outlet means
  • said air outlet means including a rotationally symmetrical zone extending from said inlet opening approximately parallel to said geometrical rotary axis of said spinning rotor.
  • said spinning rotor comprising A. a first component containing said fiber groove, B. a second component having a radial face constituting a radial base wall of said spinning chamber, C. means securing said first and second components to one another to form a rigid unit, and D. spacer means disposed between said first and second components to maintain a clearance therebetween, said clearance constituting said air outlet means.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
US00310793A 1971-11-30 1972-11-30 Open-end spinning apparatus Expired - Lifetime US3796034A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2159248A DE2159248C3 (de) 1971-11-30 1971-11-30 Offenendspinnmaschine

Publications (1)

Publication Number Publication Date
US3796034A true US3796034A (en) 1974-03-12

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US00310793A Expired - Lifetime US3796034A (en) 1971-11-30 1972-11-30 Open-end spinning apparatus

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US (1) US3796034A (enExample)
JP (1) JPS4875826A (enExample)
CH (1) CH543609A (enExample)
DE (1) DE2159248C3 (enExample)
FR (1) FR2162069A1 (enExample)
GB (1) GB1368384A (enExample)
IT (1) IT971332B (enExample)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3895483A (en) * 1973-05-28 1975-07-22 Zinser Textilmaschinen Gmbh Apparatus for cleaning spinning rotors
US4008561A (en) * 1973-10-11 1977-02-22 Zinser Textilmaschinen Gmbh Open-end spinning device
US4109452A (en) * 1976-04-17 1978-08-29 Kabushiki Kaisha Toyoda Jidoshokki Seisakusho Spinning rotor utilized for an open-end spinning apparatus
US4166356A (en) * 1978-01-11 1979-09-04 Vyzkumny Ustav Bavlnarsky Method of and apparatus for pneumatically removing a fibrous ribbon or a severed yarn end from the spinning rotor of an open-end spinning machine
US4211063A (en) * 1977-08-05 1980-07-08 Schubert & Salzer Method and device for cleaning spinning rotors in open-end spinning mechanism
US4245459A (en) * 1979-02-21 1981-01-20 Tikhonov Valentin N Spinning chamber of apparatus for open-end spinning
US4319449A (en) * 1979-09-28 1982-03-16 Schubert & Salzer Open end spinning rotor comprising a main body and a rotor body
US4339911A (en) * 1979-09-28 1982-07-20 Schubert & Salzer Open-end spinning rotor consisting of a basic member and a rotor member
US5414990A (en) * 1991-12-18 1995-05-16 Rieter Ingolstadt Spinnereimaschinenbau Ag Process and device for conveying fibers in an airstream in an open-end spinning rotor
CN104120515A (zh) * 2014-08-04 2014-10-29 湖州宏鑫绸厂 一种新型纺纱杯结构
US20150361593A1 (en) * 2014-06-17 2015-12-17 Maschinenfabrik Rieter Ag Open-End Spinning Device with an Intermediate Chamber
CN114481377A (zh) * 2022-03-24 2022-05-13 杭州福恩纺织有限公司 一种用于毛型涤纶粘胶混纺纱线成型的设备及成型方法

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2906344A1 (de) * 1979-02-19 1981-01-22 Taschkentskoe Sp K Bjuro Tekst Spinnkammer einer einrichtung zum ringlosen spinnen
CS236080B1 (en) * 1983-05-20 1985-05-15 Milan Chrtek Spinning rotor for spindleless spinning machine
DE102005025786A1 (de) * 2005-06-04 2006-12-07 Rieter Ingolstadt Spinnereimaschinenbau Ag Textilmaschine mit Reinigungsvorrichtung

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3457716A (en) * 1967-07-14 1969-07-29 Vyzk Ustav Bavlnarsky Apparatus for continuous spinning of fibers
US3524312A (en) * 1966-08-11 1970-08-18 Schubert & Salzer Maschinen Method and apparatus for cleaning rotary spinning chamber
US3557542A (en) * 1968-04-25 1971-01-26 Lev Ivanovich Oskin Twisting and forming device for pneumatic and mechanical spinning
US3584452A (en) * 1967-09-27 1971-06-15 Rieter Ag Maschf Evacuation means for an open end spinning device
US3698175A (en) * 1970-03-27 1972-10-17 Vyzk Ustav Bavlnarsky Spinning machine
US3739565A (en) * 1971-01-29 1973-06-19 Luwa Ag Method and apparatus for cleaning the spinning rotors of open-end spinning equipment

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3524312A (en) * 1966-08-11 1970-08-18 Schubert & Salzer Maschinen Method and apparatus for cleaning rotary spinning chamber
US3457716A (en) * 1967-07-14 1969-07-29 Vyzk Ustav Bavlnarsky Apparatus for continuous spinning of fibers
US3584452A (en) * 1967-09-27 1971-06-15 Rieter Ag Maschf Evacuation means for an open end spinning device
US3557542A (en) * 1968-04-25 1971-01-26 Lev Ivanovich Oskin Twisting and forming device for pneumatic and mechanical spinning
US3698175A (en) * 1970-03-27 1972-10-17 Vyzk Ustav Bavlnarsky Spinning machine
US3739565A (en) * 1971-01-29 1973-06-19 Luwa Ag Method and apparatus for cleaning the spinning rotors of open-end spinning equipment

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3895483A (en) * 1973-05-28 1975-07-22 Zinser Textilmaschinen Gmbh Apparatus for cleaning spinning rotors
US4008561A (en) * 1973-10-11 1977-02-22 Zinser Textilmaschinen Gmbh Open-end spinning device
US4109452A (en) * 1976-04-17 1978-08-29 Kabushiki Kaisha Toyoda Jidoshokki Seisakusho Spinning rotor utilized for an open-end spinning apparatus
US4211063A (en) * 1977-08-05 1980-07-08 Schubert & Salzer Method and device for cleaning spinning rotors in open-end spinning mechanism
US4166356A (en) * 1978-01-11 1979-09-04 Vyzkumny Ustav Bavlnarsky Method of and apparatus for pneumatically removing a fibrous ribbon or a severed yarn end from the spinning rotor of an open-end spinning machine
US4245459A (en) * 1979-02-21 1981-01-20 Tikhonov Valentin N Spinning chamber of apparatus for open-end spinning
US4319449A (en) * 1979-09-28 1982-03-16 Schubert & Salzer Open end spinning rotor comprising a main body and a rotor body
US4339911A (en) * 1979-09-28 1982-07-20 Schubert & Salzer Open-end spinning rotor consisting of a basic member and a rotor member
US5414990A (en) * 1991-12-18 1995-05-16 Rieter Ingolstadt Spinnereimaschinenbau Ag Process and device for conveying fibers in an airstream in an open-end spinning rotor
US20150361593A1 (en) * 2014-06-17 2015-12-17 Maschinenfabrik Rieter Ag Open-End Spinning Device with an Intermediate Chamber
US9771670B2 (en) * 2014-06-17 2017-09-26 Maschinenfabrik Rieter Ag Open-end spinning device with an intermediate chamber
CN104120515A (zh) * 2014-08-04 2014-10-29 湖州宏鑫绸厂 一种新型纺纱杯结构
CN104120515B (zh) * 2014-08-04 2016-11-23 江苏爱纺纺织有限公司 一种纺纱杯结构
CN114481377A (zh) * 2022-03-24 2022-05-13 杭州福恩纺织有限公司 一种用于毛型涤纶粘胶混纺纱线成型的设备及成型方法
CN114481377B (zh) * 2022-03-24 2023-01-20 杭州福恩纺织有限公司 一种用于毛型涤纶粘胶混纺纱线成型的设备及成型方法

Also Published As

Publication number Publication date
CH543609A (de) 1973-10-31
DE2159248C3 (de) 1979-04-19
IT971332B (it) 1974-04-30
FR2162069A1 (enExample) 1973-07-13
DE2159248B2 (de) 1978-08-24
JPS4875826A (enExample) 1973-10-12
DE2159248A1 (de) 1973-06-07
GB1368384A (en) 1974-09-25

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