US3875731A - Apparatus for ringless spinning of fibre - Google Patents

Apparatus for ringless spinning of fibre Download PDF

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Publication number
US3875731A
US3875731A US432827A US43282774A US3875731A US 3875731 A US3875731 A US 3875731A US 432827 A US432827 A US 432827A US 43282774 A US43282774 A US 43282774A US 3875731 A US3875731 A US 3875731A
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US
United States
Prior art keywords
bowl
yarn
twist
tube
rotation
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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
Application number
US432827A
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English (en)
Inventor
Igor Stepanovich Khomyakov
Albert Arturovich Leinek
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Individual
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Individual
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Publication date
Application filed by Individual filed Critical Individual
Priority to US432827A priority Critical patent/US3875731A/en
Priority claimed from CH98474A external-priority patent/CH567584A5/de
Priority claimed from DE2405674A external-priority patent/DE2405674C2/de
Priority to FR7406181A priority patent/FR2262137B1/fr
Application granted granted Critical
Publication of US3875731A publication Critical patent/US3875731A/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
    • D01H4/40—Removing running yarn from the yarn forming region, e.g. using tubes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H57/00—Guides for filamentary materials; Supports therefor
    • B65H57/12—Tubes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/30—Handled filamentary material
    • B65H2701/31—Textiles threads or artificial strands of filaments

Definitions

  • the apparatus includes a driven spinning bowl with an l inventofsi 3 stepahovich Khomyakov, uiiisll internal frustoconical inclined surface, the bowl havsovcisktiya 125, 231 Albert ing a base with air vents creating suction within the Artumvich Leinek, iiiiistl bowl at rotation of this bowl, whereby separate fibres Sovetskaya Ill.
  • Mikulccky et al. 57/5889 disclosfid apparatus enables the portion of the yam g ni g tween the trough and the delivery tube to acquire a ⁇ v /x1990 12/1973 Btiflllng ei 411TII...........IIIII 57/524195 twist which is greater thhh the desired twist" wh'ch Primary E. ⁇ uminer.lohn Petrakes Arm/hey, Agent, or Firm-Fleit & Jacobson Jllb prises the rate of breakage of the yarn inside the bowl at this portion of the yarn.
  • the present invention relates to apparatus for pneumatic spinning of yarn, and more particularly, to ringless apparatus for spinning fibre.
  • the invention may be utilized with utmost effectiveness in obtaining medium and low count yarn from staple chemical fibre, flax fibre, as well as from blends of the above fibre with woollen fibre and with one another.
  • This cushion is necessary to ensure that the fibres moving toward the inclined internal surface of the bowl are not arrested by engaging the wall of the suction passage, which engagement may be caused by a centrifugal force resulting from the fibres gradually varying the direction of their progress.
  • Both the plates and the openings are inclined in a di rection opposite to that of rotation of the bowl and coinciding with the direction of the flow of air through the suction passage, and, consequently, with that of the motion of the yarn, to raise the effectiveness of the air cushion.
  • the provision of the air cushion improves the conditions of conveying the fibres via the suction passage, and, consequently, improves the quality of the yarn produced.
  • the known apparatus incorporates no means for reducing the breakage rate of the yarn, which reduction may be attained by increasing the value of the twist of the yarn above the desired twist over the area between the inclined surface of the bowl and the delivery passage, accomplished by engagement of the plates with the yarn. In the known apparatus this cannot be effected, since the plates are inclined in opposition to the direction of the progress of the yarn and are arranged exclusively the suction passage, which results in an increased rate of breakage of the yarn.
  • the end face of this funnel facing the interior of the bowl, is provided with an annular shoulder having cut therein a helical thread matching at a specified angle with a screw thread cut in the internal surface of the funnel, the thread defining a plurality of ribs adapted to engage the yarn.
  • the height of the threads of the helical thread diminishes in the direction of delivery of the yarn, while the height of the screw threads increases in the same direction.
  • twisting is accomplished over the portions of the yarn, extending axially of the bowl, wherefrom this twisting propagates, owing to the elasticity of the yarn. This propagation of the twist is opposed by the so-called twist thresholds in front of which the twist accummulates in the yarn.
  • twist in the yarn overcomes the twist threshold and propagates further along the yarn.
  • a twist threshold is meant to indicate a local point of resistance to the propagation of a twist along the yarn.
  • twist thresholds are the point of transition of the yarn from the screw thread upon the helical thread and the annular shoulder, positinned intermediate of the twist initiation area and the trough.
  • the first threshold i.e. the point of transition from one thread to the other, may be overcome by selecting an appropriate structure of the apparatus, whereas the presence of the other threshold, i.e.
  • the desired value of the twist is meant here to describe the twist corresponding to that acquired by yarn produced by ring spinning frames.
  • the twist value is the number of twists in the yarn per one linear metre of the yarn of the corresponding count, fibre composition and a range of fabrics that can be produced from this yarn.
  • an apparatus for ringless spinning of fibre including a driven spinning bowl having an inclined internal surface of a frustoconical shape, the bowl being associated with a lid and having a base with air vents adapted to create suction within this bowl, to draw separate fibres from a pipe mounted in the lid along the inclined internal surface into the annular trough of the bowl, this trough being adapted to accumulate fibres therein and to form a thin sliver of these fibres at rotation of the bowl, the sliver being delivered as spun yarn through a tube mounted in said lid and having internally directed projections for engagement with the yarn, in which apparatus, in accordance with the present invention, this tube has a portion which is gradually curved in the direction of the delivery of the yarn, this portion having said projections positioned thereon, to effect twisting of the yarn along the straight portion of said tube to a degree that is greater than the desired degree of twisting of this yarn, this greater twist being transmitted to the sliver in the trough of the bowl by
  • An apparatus with this structure reduces the rate of breakage of the yarn and produces yarn with a desired twist, including the twist permissible for production of knitted fabrics, owing to the yarn being imparted a twist over the portion thereof between the trough and the free end of the plate, which is in excess of the desired value, with subsequent reduction of this twist to the desired value at the point of exit of the yarn from the tube.
  • This is attained by the projections on the curved portion of the tube forming the first twist threshold.
  • the positioning of the first twist threshold above the point of twist formation in the straight portion of the yarn opposes propagation of the twist in the direction of delivery of the yarn, whereby it becomes possible to impart to the yarn in the area of its formation a twist that is greater than the desired value.
  • the second twist threshold formed by the end face of the tube is easily overcome by this excessive twist, since the plates engage the yarn at the points of contact, moving to the periphery of the bowl, which forwards the twist toward the trough, creating the greatest value of the twist adjacentto this bowl, whereby the twist is effectively transmitted to the sliver laying in the trough.
  • said projections should be presented by a cylindrical coiled spring having the ends thereof secured to the end faces of the tube. This feature simplifies manufacture of the tube and offers ready replacement of the spring, as the latter is worn out by the friction of the yarn against the limited number of the points of this spring.
  • the plates should be arranged on the lid so that the ribs thereof intersect the plane of the trough.
  • the plates should be arranged on the lid so that the point of engagement of each plate with the yarn move from the axis of rotation of the yarn toward the periphery thereof in the direction of rotation of the yarn.
  • the above conditions may be provided for by the plates being of a spiral shape.
  • FIG. 1 is a cross-sectional side view of the herein disclosed apparatus for ringless spinning of fibre
  • FIG. 2 is a view from below of the lid with the plates
  • FIG. 3 is a view from below of a different embodiment of the lid with the plates
  • FIG. 4 is a sectional view along line IVIV in FIG. 1.
  • the apparatus for ringless spinning of fibre comprises a driven spinning bowl (FIG. 1) having an internal inclined surface 2 of a frustoconical shape for accumulation thereon of separate fibres 3 being supplied, the base 4 of the bowl 1 having made therethrough air vents 5 adapted to create suction within this bowl.
  • the bowl 1 includes a trough 6 for accumulation in this trough of the fibres 3 sliding down the inclined surface 2 of the bowl, which fibres are formed into a thin sliver 7 by rotation of the bowl.
  • the latter is associated with a lid 8 having mounted thereon a tube 9 for delivery of spun yarn 10.
  • Spiral-shaped plates 1 1 have one end thereof secured to the lid 8, while the opposite end 12 (FIG. 2) of each plate is free.
  • the plates 11 are positioned so that their ribs intersect the plane defined by the trough 6 and are held in permanent engagement with the yarn 10 formed from the sliver 7 in the trough 6 and delivered from the bowl 1 via the tube 9 including a straight portion 13 and a smoothly curved portion 14.
  • the portion 14 includes projections 15 imparting a twist to the yarn 10 over the straight portion 13, this twist being in excess of the desired twist of the final yarn. This twist is transmitted by means of the plates 11 to the sliver 7.
  • the projections 15 are arranged with a pitch ensuring that the yarn is so supported by these projections that it would not contact the walls of the tube 9.
  • the direction of the projections should correspond to the direction of the twisting of the yarn.
  • the projections 15 may be formed by an extended cylindrical coiled spring 16 with a corresponding direction of the coils, tightly fitting into the tube 9. In this case the opposite ends of the spring 16 are secured to the respective end faces of the tube 9.
  • the plates 11 are positioned so that the point A of contact of each one of the plates with the yarn 10 moves away from the axis of rotation of the bowl 1 toward the periphery of the bowl in the direction of delivery of the yarn, which corresponds to the direction of rotation of the bowl indicated in the drawing with the arrow B.
  • the plates 11 may alternatively be in the form of a pair of spirals 17, as is shown in FIG. 3, or even in the form of a single spiral, as is shown in FIG. 4.
  • the lid 8 (FIG. 1) has mounted thereon a pipe 19 through which separate fibres 3 are conveyed in a stream of air into the bowl 1 under the action of suction created in this bowl, onto the inclined surface 2 of the bowl. Separation of the fibres 3 and delivery of the final yarn 10 are effected in any suitable known manner.
  • the spinning bowl is mounted on a spindle 20 designed for rotation in bearings 21 and receiving rotation from any suitable known drive mechanism not shown in the drawings.
  • the spinning bowl 1 is enclosed within a casing 22 provided with an exhaust connection 23 sealingly connected in any known suitable manner with a manifold through which air coming into the bowl 1 is withdrawn therefrom.
  • the direction of supply of the fibres into the bowl is indicated in the drawings with the reference arrow C, while the direction of delivery of the yarn is indicated with the arrow D.
  • the apparatus operates as follows.
  • the spindle 20 is rotated by the drive mechanism (not shown) jointly with the bowl 1.
  • the air vents 5 create suction within the bowl 1, which results in a stream of air being drawn into the bowl 1 via the pipe 19, the stream carrying separate fibres 3 therealong and placing them onto the inclined surface 2.
  • the fibres 3 Upon having engaged this inclined surface 2, the fibres 3 vary the direction of their advance and are pressed in a straightened form to this surface by the centrifugal force.
  • the action of the same centrifugal force makes the fibres 3 slide down the inclined surface 2 of the frustoconical shape, and, while so sliding from a smaller diameter of the bowl toward a greater one, they are straightened even further and accummulate in the trough 6, in the form of a thin sliver 7.
  • an end of the already spun yarn is introduced into the tube 9.
  • the action of suction within the bowl 9 creates a stream of air via the tube 9, directed into the bowl 1.
  • This stream flows along said end of the already spun yarn 10, into the internal space of the bowl 1, where this end is taken by the rotating stream of air, and the rotating end of the yarn 10 engages the sliver 7 in the trough 6.
  • This rotating end of the yarn winds the sliver 7 thereabout, in which way the spinning operation commences.
  • the spun yarn 10 is withdrawn from the bowl continuously by any suitable known mechanism (not shown) in the direction indicated with the arrow D.
  • the curving portion 14 of the tube 9 includes the projections 15 which the yarn 10 engages, owing to the tension thereof caused by the action of the centrifugal force created at the rotating portion of the yarn 10 between the trough 6 and the tube 9.
  • the yarn 10 has a degree of the twist over the portion from the outlet of the tube 9 to the trough 6, which is greater than the desired twist, this value being at its maximum adjacent to the trough, which yields effective transmission of the twist to the sliver 7 and results in an increased strength of the abovementioned portion of the yarn.
  • An apparatus for ringless spinning of fibre comprising: a spinning bowl mounted for rotation; means for imparting rotation to said bowl; an internal inclined surface of said bowl of a frustoconical shape; a lid associated with said bowl and including a pipe adapted for passage of separate fibres therethrough; the base of said bowl having air vents made therein for creating suction within said bowl at rotation thereof, to draw said separate fibres from said pipe onto said inclined surface; an annular trough defined within said bowl, adapted to collect therein said separate fibres coming thereinto along said inclined surface and to form said fibres into a sliver at rotation of said bowl; a tube mounted in said lid and adapted to have final yarn, formed from said sliver, delivered therealong; a straight portion of said tube; a portion of said tube, gradually curving in the direction of the delivery of the yarn; projections provided in said curving portion and adapted to impart a twist to the yarn over said straight portion of said tube, of which the value is greater than the desired twist of the yarn, said

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
US432827A 1974-01-14 1974-01-14 Apparatus for ringless spinning of fibre Expired - Lifetime US3875731A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US432827A US3875731A (en) 1974-01-14 1974-01-14 Apparatus for ringless spinning of fibre
FR7406181A FR2262137B1 (Direct) 1974-01-14 1974-02-22

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US432827A US3875731A (en) 1974-01-14 1974-01-14 Apparatus for ringless spinning of fibre
CH98474A CH567584A5 (en) 1974-01-24 1974-01-24 Ringless fibre spinning apparatus - yarn is twisted by plates in bowl and baffles in delivery tube
DE2405674A DE2405674C2 (de) 1974-02-06 1974-02-06 Offenendspinnmaschine
FR7406181A FR2262137B1 (Direct) 1974-01-14 1974-02-22

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US3875731A true US3875731A (en) 1975-04-08

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FR (1) FR2262137B1 (Direct)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4258541A (en) * 1978-03-28 1981-03-31 Societe Alsacienne De Constructions Mecaniques De Mulhouse Open-end rotor with thread draw-off tube
US4499719A (en) * 1982-09-08 1985-02-19 Societe Alsacienne De Construction De Materiel Textile Freed-fiber spinning devices
FR2584743A1 (fr) * 1985-07-11 1987-01-16 Schlumberger Cie N Conduit pour le transport d'un ruban de fibres textiles sur une distance relativement importante
US4665687A (en) * 1985-10-10 1987-05-19 Rieter Machine Works Limited Spinning device for open-end spinning
US4702069A (en) * 1987-03-09 1987-10-27 Vsesojuzny Nauchnoissledovatelsky Institut Legkogo I Tekstilnogo Mashinostroenia Open-end spinning device
US4773211A (en) * 1986-03-19 1988-09-27 W. Schlafhorst & Co. Arrangement for open-end spinning
US4777813A (en) * 1982-07-22 1988-10-18 Schubert & Salzer Chiplessly formed open-end spinning rotor and process for production of such an open-end spinning rotor
US4877170A (en) * 1985-01-22 1989-10-31 Alan Gutschmit Tubular conduit for transporting traveling textile yarn
US4932202A (en) * 1988-07-16 1990-06-12 Hans Landwehrkamp Yarn draw-off pipe for an open-end spinning device
WO1994004730A1 (en) * 1992-08-20 1994-03-03 Burckhardt America Inc. Open end spinning device
US5423177A (en) * 1992-07-25 1995-06-13 W. Schlafhorst Ag & Co. Apparatus for open-end spinning
US5718110A (en) * 1993-02-12 1998-02-17 Novibra Gmbh Arrangement for open-end rotor spinning
US20150337463A1 (en) * 2014-05-21 2015-11-26 Maschinenfabrik Rieter Ag False Twist Device for an Open-End Spinning Device

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2421229A2 (fr) * 1972-11-30 1979-10-26 Alsacienne Constr Meca Procede et dispositif pour diminuer localement le pas des helices formees par les brins d'un produit filiforme souple torsade

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3339360A (en) * 1967-09-05 Ringless spinning apparatus with easily cleanable spinning chamber
US3411283A (en) * 1966-03-31 1968-11-19 Toyoda Automatic Loom Works In Spinning apparatus utilizing airstream
US3457716A (en) * 1967-07-14 1969-07-29 Vyzk Ustav Bavlnarsky Apparatus for continuous spinning of fibers
US3778990A (en) * 1971-06-21 1973-12-18 Skf Kugellagerfabriken Gmbh Device for open end spinning

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3339360A (en) * 1967-09-05 Ringless spinning apparatus with easily cleanable spinning chamber
US3411283A (en) * 1966-03-31 1968-11-19 Toyoda Automatic Loom Works In Spinning apparatus utilizing airstream
US3457716A (en) * 1967-07-14 1969-07-29 Vyzk Ustav Bavlnarsky Apparatus for continuous spinning of fibers
US3778990A (en) * 1971-06-21 1973-12-18 Skf Kugellagerfabriken Gmbh Device for open end spinning

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4258541A (en) * 1978-03-28 1981-03-31 Societe Alsacienne De Constructions Mecaniques De Mulhouse Open-end rotor with thread draw-off tube
US4777813A (en) * 1982-07-22 1988-10-18 Schubert & Salzer Chiplessly formed open-end spinning rotor and process for production of such an open-end spinning rotor
US4848080A (en) * 1982-07-22 1989-07-18 Schubert & Salzer Chiplessly formed open-end spinning rotor and process for production of such and open-end spinning rotor
US4499719A (en) * 1982-09-08 1985-02-19 Societe Alsacienne De Construction De Materiel Textile Freed-fiber spinning devices
US4877170A (en) * 1985-01-22 1989-10-31 Alan Gutschmit Tubular conduit for transporting traveling textile yarn
FR2584743A1 (fr) * 1985-07-11 1987-01-16 Schlumberger Cie N Conduit pour le transport d'un ruban de fibres textiles sur une distance relativement importante
US4665687A (en) * 1985-10-10 1987-05-19 Rieter Machine Works Limited Spinning device for open-end spinning
US4773211A (en) * 1986-03-19 1988-09-27 W. Schlafhorst & Co. Arrangement for open-end spinning
US4702069A (en) * 1987-03-09 1987-10-27 Vsesojuzny Nauchnoissledovatelsky Institut Legkogo I Tekstilnogo Mashinostroenia Open-end spinning device
US4932202A (en) * 1988-07-16 1990-06-12 Hans Landwehrkamp Yarn draw-off pipe for an open-end spinning device
US5423177A (en) * 1992-07-25 1995-06-13 W. Schlafhorst Ag & Co. Apparatus for open-end spinning
WO1994004730A1 (en) * 1992-08-20 1994-03-03 Burckhardt America Inc. Open end spinning device
US5437147A (en) * 1992-08-20 1995-08-01 Burckhardt America, Inc. Open end spinning device
US5475974A (en) * 1992-08-20 1995-12-19 Burckhardt America, Inc. Open end spinning device
US5718110A (en) * 1993-02-12 1998-02-17 Novibra Gmbh Arrangement for open-end rotor spinning
US20150337463A1 (en) * 2014-05-21 2015-11-26 Maschinenfabrik Rieter Ag False Twist Device for an Open-End Spinning Device
US9580841B2 (en) * 2014-05-21 2017-02-28 Maschinenfabrik Rieter Ag False twist device for an open-end spinning device

Also Published As

Publication number Publication date
FR2262137B1 (Direct) 1976-06-25
FR2262137A1 (Direct) 1975-09-19

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