EP0227688B1 - Offenend-spinnvorrichtung - Google Patents

Offenend-spinnvorrichtung Download PDF

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Publication number
EP0227688B1
EP0227688B1 EP85905770A EP85905770A EP0227688B1 EP 0227688 B1 EP0227688 B1 EP 0227688B1 EP 85905770 A EP85905770 A EP 85905770A EP 85905770 A EP85905770 A EP 85905770A EP 0227688 B1 EP0227688 B1 EP 0227688B1
Authority
EP
European Patent Office
Prior art keywords
guide surface
friction
nip
roll
collecting groove
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
Application number
EP85905770A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0227688A1 (de
Inventor
Peter Artzt
Hans Rottmayr
Wolfgang Bauer
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.)
Rieter Ingolstadt GmbH
Original Assignee
Schubert und Salzer Maschinenfabrik AG
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
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Application filed by Schubert und Salzer Maschinenfabrik AG filed Critical Schubert und Salzer Maschinenfabrik AG
Publication of EP0227688A1 publication Critical patent/EP0227688A1/de
Application granted granted Critical
Publication of EP0227688B1 publication Critical patent/EP0227688B1/de
Expired legal-status Critical Current

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Classifications

    • 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
    • D01H4/16—Friction spinning, i.e. the running surface being provided by a pair of closely spaced friction drums, e.g. at least one suction drum

Definitions

  • the invention relates to an open-end spinning device with two co-driven friction rollers forming a gusset, of which at least the friction roller screwing into the gusset is designed as a suction roller and conveys the fiber material fed onto its outer surface into the gusset, where the fibers are twisted into a thread .
  • entrained fibers are blown by blown air onto the jacket of a suction roller and conveyed by this into the spinning gusset, which the suction roller and a roller driven in the same direction as the suction roller form with a closed jacket surface (DE-OS-1 902111 , U.S. Patent 3-636-963).
  • the fibers are twisted in the spinning gusset by friction to form a yarn that is continuously drawn off.
  • the quality of the yarns produced on this device is unsatisfactory, especially at high spinning speeds.
  • the object of the present invention is to provide a device which enables the production of a yarn with higher uniformity and better dynamometric properties.
  • a collecting groove for the fed fiber material is provided at a distance from the spinning gusset, which is formed by the outer surface of the friction roller rotating into the spinning gusset and a moving guide surface, the surface speed of which in the collecting groove is aligned with the surface speed of the friction roller.
  • the fiber material is collected and summarized precisely and precisely.
  • the fibers fed in are pre-duplicated and fed to the spinning gusset in a very uniform formation, which has a favorable effect on the yarn quality.
  • the collecting groove is easily formed by a roller that is closely adjacent to the friction roller.
  • the guide surface rests on the bottom of the collecting groove on the surface of the friction roller.
  • the guide surface follows the surface of the friction roller right into the spinning gusset. This can be accomplished by making the guide surface the surface of an endless belt.
  • the guide surface is expediently pressed against the outer surface of the friction roller.
  • the moving guide surface is followed by a stationary guide surface.
  • the stationary guide surface expediently extends into the spider gusset.
  • the stationary guide surface is arranged at a distance from the moving guide surface forms an air flow directed onto the friction roller, by means of which the fibers are held on the friction roller.
  • This air flow can be intensified by the fact that the stationary guide surface has bores leading to the atmosphere.
  • the edge of the stationary guide surface facing the moving guide surface is rounded.
  • the stationary guide surface is arranged at a distance from the friction roller.
  • the fibers are preferably fed into the collecting groove in the longitudinal direction of the collecting groove, so that the fibers enter the spinning gusset parallel to the yarn axis and are bound to the rotating yarn end. This further improves the uniformity and strength of the yarn.
  • the friction roller has a negative pressure area which begins in the direction of rotation in front of the collecting groove and extends into the spinning gusset enough.
  • defined conditions for holding the fibers in place during their transport and in the spinning gusset are created in that the vacuum region of the friction roller is divided into at least two sections with different suction effects in the circumferential direction of the suction roller.
  • Good spinning conditions are achieved in that at least one of the friction rollers has a section of increased negative pressure in the spinning gusset in the region of the yarn formation zone.
  • the friction roller rotating into the spinning gusset expediently has a section of increased negative pressure.
  • This section is advantageously between 4 ulid 8 mm wide. A width of 6 mm has proven to be particularly favorable.
  • the twist and strength of the yarn are further improved in that the section extends about 1 mm beyond the axis connecting plane of the friction rollers to the side facing away from the spinning gusset.
  • An improvement also results if the center of the section lies in the axis connection plane of the friction rollers or in the circumferential direction away from the axis connection plane in the direction on the side facing away from the spinning gusset. Characterized in that a portion of low negative pressure adjoins the section of increased negative pressure in the friction roller turning into the spinning gusset, the air consumption of the device is reduced without the safe fiber transport on the friction roller being impaired thereby.
  • Fig. 1 shows two friction rollers 1 and 2, both of which are designed as suction rollers.
  • the parallel and closely arranged friction rollers 1 and 2 form a spinning gusset 3, in which fed fibers are turned into a yarn.
  • the friction rollers 1 and 2 are driven in the same direction in a manner not shown.
  • the friction rollers 1 and 2 have a perforated outer surface 10 and 20 and are provided with a suction insert 11 and 21 connected to a suction device (not shown).
  • the suction inserts 11 and 21 have in the area of the spinning gusset 3 a slot 12 and 22 which extends in the longitudinal direction of the spinning gusset 3 and through which a suction air flow is generated.
  • the vacuum range of the friction roller 1 rotating into the spinning gusset 3 extends from a boundary wall 15 to the spinning gusset 3 and ends there at a boundary wall 14 Boundary wall 15 is arranged in the direction of rotation of the friction roller 1 in front of a collecting groove 4, which will be described in more detail below.
  • the negative pressure area of the friction roller 1 is divided by a partition 13 into two sections I and II with different suction effects, the section I forming the slot 12 expediently having a higher negative pressure in the yarn formation area.
  • the vacuum in section II is only intended to ensure that the fibers are securely held on the friction roller 1 during their transport to the spinning gusset 3 and are dimensioned accordingly low. In contrast, the vacuum in section I must be so high that proper spinning is guaranteed.
  • the portion I forming the slot 12 has a width a between 4 and 8 mm, preferably a width a of 6, in the circumferential direction mm and extends about 1 mm beyond the axis connection plane A of the friction rollers 1 and 2 to the side facing away from the spinning gusset 3.
  • this also applies to the slot 22 of the suction roll 2 opposite section I.
  • the yarn strength has also increased if the middle of the section lies in the axis connection plane A (FIG. 4) or approximately 1 mm away from the axis connection plane A in the direction of the side facing away from the spider gusset 3. This is indicated in Fig. 4 by the broken line.
  • the above-mentioned collecting groove 4, in front of which the negative pressure area of section II begins, is formed by the outer surface 10 of the friction roller 1 turning into the spider gusset 3 and a moving guide surface 50.
  • this guide surface 50 is the surface of a rotatably mounted roller 5, which is arranged so close to the friction roller 1 that the guide surface 50 rests on the bottom of the collecting groove 4 on the friction roller 1.
  • the roller 5, which can have an elastic covering, is driven by the friction roller 1, the surface speed of the guide surface 50 in the collecting groove 4 being aligned with the surface speed of the friction roller 1. If appropriate, the roller 5 is pressed against the friction roller 1, for example by spring force .
  • the movable guide surface 50 is followed by a stationary guide surface 60, which is formed by the surface of the housing part 6 lying between the friction rollers 1 and 2 and the roller 5 facing the friction roller 1.
  • the guide surface 60 follows the contour of the friction roller 1 at a distance into the spinning gusset 3 and is also at a distance from the movable guide surface 50. This allows an air flow to form between the roller 5 and the housing part 6 to the friction roller 1, which holds the Fibers on the friction roller 1 is required and also prevents fibers from being taken along by the roller 5.
  • the air flow to the friction roller 1 is further increased by bores 61 in the stationary guide surface 60, which lead to the atmosphere.
  • the edge 62 of the stationary guide surface 60 facing the moving guide surface 50 is rounded.
  • the fiber material to be spun is prepared in the usual way as a sliver before dissolving direction (not shown), which it dissolves in individual fibers.
  • the individual fibers are fed through a fiber channel 7 (FIG. 2) into the collecting groove 4, in which they are collected and combined into a fiber formation.
  • the fiber formation retained by the suction air flow on the lateral surface 10 of the friction roller 1 receives greater cohesion and inevitable guidance when leaving the collecting groove 4 due to the moving guide surface 50 resting on the lateral surface 10, which is then taken over by the stationary guide surface 60 into the spider gusset 3 becomes. In this way, a pre-duplicated, uniform fiber formation reaches the spinning gusset 3, which improves the yarn quality.
  • a further improvement in the yarn values is achieved if the fibers are fed into the collecting groove 4 in the longitudinal direction.
  • This type of feeding is indicated in FIG. 1 by a fiber channel 70.
  • the fibers arrive in parallel with the yarn axis in the spinning gusset 3, which is extremely favorable for the fibers to be properly incorporated into the rotating free yarn end and their uniform arrangement in the yarn.
  • an angular position between the longitudinal and transverse directions can also be provided.
  • the friction roller 1 from FIG. 1 which rotates into the spinning gusset 3 and is designed as a suction roller is retained.
  • the second friction roller 2 ' which forms the spinning gusset 3 with the friction roller 1, is not perforated and is not vacuumed.
  • the collecting groove 4 is formed by the outer surface 10 of the friction roller 1 and an endless belt 8.
  • the surface of the endless belt 8 forms a moving guide surface 80 which extends into the spider gusset 3.
  • the endless belt 8 is guided over deflection rollers 81, 82 and 83 and is pressed by at least one pressure roller 84 against the outer surface 10 of the friction roller 1, so that the guide surface 80 rests on the outer surface 10 at the bottom of the collecting groove 4.
  • the contact pressure of the pressing rott 84 is increased by a spring, so that the endless belt 8 is safely driven by the friction roller 1, the surface speed of the guide roller 80 in the collecting groove 4 being aligned with the surface speed of the friction roller 1.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
EP85905770A 1984-11-13 1985-11-11 Offenend-spinnvorrichtung Expired EP0227688B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19843441492 DE3441492A1 (de) 1984-11-13 1984-11-13 Offenend-spinnvorrichtung
DE3441492 1984-11-13

Publications (2)

Publication Number Publication Date
EP0227688A1 EP0227688A1 (de) 1987-07-08
EP0227688B1 true EP0227688B1 (de) 1989-03-15

Family

ID=6250204

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85905770A Expired EP0227688B1 (de) 1984-11-13 1985-11-11 Offenend-spinnvorrichtung

Country Status (6)

Country Link
US (1) US4697411A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
EP (1) EP0227688B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
CN (1) CN1004151B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
DE (2) DE3441492A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
IN (1) IN166602B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
WO (1) WO1986002954A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT391889B (de) * 1986-06-12 1990-12-10 Fehrer Ernst Vorrichtung zur herstellung eines garnes
AT391890B (de) * 1986-06-19 1990-12-10 Fehrer Ernst Vorrichtung zum herstellen eines garnes
DE3832110A1 (de) * 1988-09-21 1990-03-29 Rieter Ag Maschf Friktionsspinnvorrichtung
DE3927739A1 (de) * 1989-08-23 1991-02-28 Fritz Stahlecker Verfahren und vorrichtung zum falschdrallspinnen
DE19601038A1 (de) * 1996-01-13 1997-07-17 Fritz Stahlecker Verfahren zum Offenend-Spinnen
DE19601958A1 (de) * 1996-01-20 1997-07-24 Fritz Stahlecker Verfahren zum Offenend-Spinnen

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3132465A (en) * 1963-02-04 1964-05-12 Deering Milliken Res Corp Textile processing arrangement and method for spinning fibers into yarn
GB1240470A (en) * 1967-08-15 1971-07-28 Cotton Silk & Man Made Fibres Yarns and like fibre assemblies
DE1902111A1 (de) * 1968-01-16 1969-09-04 Cotton Silk & Man Made Fibres Verfahren und Vorrichtung zur Herstellung von Faeden
FR2383253A1 (fr) * 1977-03-09 1978-10-06 Vyzk Ustav Bavlnarsky Procede et dispositif de filage de fil par friction suivant le principe open-end
SE413517B (sv) * 1978-01-10 1980-06-02 Peo Teknokonsult Ab Sett och anordning for framstellning av effektgarn
IT1145314B (it) * 1979-10-16 1986-11-05 Murata Machinery Ltd Dispositivo di alto stiro in una macchina di filatura
DE3300636A1 (de) * 1983-01-11 1984-07-12 Fritz 7347 Bad Überkingen Stahlecker Oe-friktionsspinnvorrichtung
DE3308249A1 (de) * 1983-03-09 1984-09-13 Fritz 7347 Bad Überkingen Stahlecker Oe-friktionsspinnvorrichtung
DE3308250A1 (de) * 1983-03-09 1984-09-13 Stahlecker, Fritz, 7347 Bad Überkingen Oe-friktionsspinnvorrichtung
FR2545108B1 (fr) * 1983-04-29 1986-04-04 Juillard Yves Procede de filature et dispositif pour la mise en oeuvre de ce procede
DE3330414A1 (de) * 1983-08-23 1985-03-14 Karl-Josef Dipl.-Ing. 4156 Willich Brockmanns Verfahren und vorrichtung zum aufbereiten der einer friktionsspinnmaschine zugefuehrten spinnfasern
AT377017B (de) * 1983-08-30 1985-01-25 Fehrer Ernst Vorrichtung zum herstellen eines garnes
IN164144B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * 1984-05-18 1989-01-21 Rieter Ag Maschf
US4573312A (en) * 1984-08-23 1986-03-04 W. Schlafhorst & Co. Friction spinning apparatus

Also Published As

Publication number Publication date
WO1986002954A1 (en) 1986-05-22
DE3441492A1 (de) 1986-05-22
CN85108755A (zh) 1986-06-10
EP0227688A1 (de) 1987-07-08
CN1004151B (zh) 1989-05-10
US4697411A (en) 1987-10-06
DE3568803D1 (en) 1989-04-20
DE3441492C2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1987-11-12
IN166602B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1990-06-09

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