US3681907A - Fiber separating roller device for spinning units of pneumatic-mechanical yarn manufacturing machines - Google Patents

Fiber separating roller device for spinning units of pneumatic-mechanical yarn manufacturing machines Download PDF

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Publication number
US3681907A
US3681907A US112858A US3681907DA US3681907A US 3681907 A US3681907 A US 3681907A US 112858 A US112858 A US 112858A US 3681907D A US3681907D A US 3681907DA US 3681907 A US3681907 A US 3681907A
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US
United States
Prior art keywords
fiber separating
separating roller
roller
fiber
spinning
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 - Lifetime
Application number
US112858A
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English (en)
Inventor
Karel Jindra
Kamil Pavlik
Josef Kas
Zdenek Kocian
Vaciav Hanus
Jaroslav Tyls
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.)
Elitex Zavody Textilniho
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Elitex Zavody Textilniho
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.)
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Publication date
Application filed by Elitex Zavody Textilniho filed Critical Elitex Zavody Textilniho
Application granted granted Critical
Publication of US3681907A publication Critical patent/US3681907A/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
    • D01H4/30—Arrangements for separating slivers into fibres; Orienting or straightening fibres, e.g. using guide-rolls
    • D01H4/32—Arrangements for separating slivers into fibres; Orienting or straightening fibres, e.g. using guide-rolls using opening rollers

Definitions

  • ABSTRACT A fiber separating roller device for spinning units of pneumatic-mechanical machines for manufacturing yarn, particularly by means of an under-pressure (reduced pressure) spinning chamber mounted with its front surfaces in the recess of and substantially sealed to the body of the fiber separating mechanism.
  • the body of the fiber separating roller is provided with at least two continuous passages therethrough.
  • the axes of the passages may be parallel to the axis of rotation of the fiber separating roller, skewed in one direction relative to the axis of rotation of the fiber separating roller, or alternating skewed in several directions relative to the axis of the fiber separating roller.
  • the present invention relates to an improved fiber separating roller device for spinning units of machines for manufacturing yarn pneumatico-mechanically, the spinning chamber of such spinning unit being mounted with its front surfaces in the recesses of the body of the fiber separating mechanism.
  • Embodiments are known in which the fiber separating roller mounted inside the body of the fiber separator mechanism is provided with smooth front surfaces engaging the recesses of said body.
  • a feeding roller is usually attached to the fiber separating roller, said feeding roller feeding a sliver of fibrous material to the working surface of the fiber separating roller.
  • the separate, combed-out fibers are withdrawn through the withdrawing opening, which is represented by an exit channel, which opens onto the collecting surface of the rotary spinning chamber, where yarn is formed from the fibers in a known manner.
  • the walls of the body of the fiber separating body are provided with openings enabling air to enter the inner space, said air being thus introduced into the path about which the fibers are conveyed during processing.
  • the disadvantage of the latter modification consists particularly in that the close zone of the yarn forming point is contaminated to a great extent by dust and fluff, the said impurities being sucked in by the openings into the front space of the fiber separating mechanism in which also the fiber separating roller is mounted. At least a part of these impurities is stuck in such front space, and also causes choking after extended operation.
  • the present invention has among its objects the overcoming and limiting of said fiber flue dust to a minimum, thus enhancing the reliability of operation of the spinning mechanism, as well as the quality of the yarn produced by it.
  • the body of the fiber separating roller is provided with at least two continuous openings therethrough.
  • FIG. I is a view in vertical section through a first embodiment of the fiber separating mechanism of the invention.
  • FIG. 2 is a side view in vertical section through the fiber separating mechanism and the spinning chamber;
  • FIG. 3 is a view in side elevation of a first embodiment of the fiber separating roller
  • FIG. 4 is a view in chordal section through the fiber separating roller along the line lV-IV in FIG. 3;
  • FIG. 5 is a view in side elevation of a further embodiment of the fiber separating roller.
  • FIG. 6 is a view in diametral section through the further embodiment of the fiber separating roller along line VI-VI in FIG. 5.
  • FIGS. 1-4, inclusive show a first embodiment of fiber separating mechanism
  • FIGS. 5 and 6 show a modification of the fiber separating roller therefor.
  • a feeding roller 2 is rotatably mounted in the body 1 of the mechanism, and in its immediate proximity there is rotatably mounted a fiber separating roller 3 provided with a suitable roughened operative surface 4, e.g. a sawtooth wire, needles, rippled rings or similar elements.
  • the actual body of the fiber separating roller is provided with continuous openings or passages 5 therethrough, the axes of which are skewed with respect to the axis of rotation of the fiber separating roller 3, either only in one direction as shown, or alternatingly in several directions.
  • the front surfaces of the body 1 of the fiber separating mechanism are substantially sealed to the spinning chamber 7, so that the vacuum in the spinning chamber sucks air through the body or housing of the fiber separating mechanism.
  • the shape of the openings 5 can be either circular, or square-shaped, rectangular, triangular, hexagonal, rhombic, slot-shaped with rounded-off ends or any other shape.
  • the side walls of body 1 of the fiber separating mechanism are connected with the ambient atmosphere by means of ventilation openings 8, 9 which have the maximum possible dimensions.
  • the ventilation recess at the free side of body 1 of the fiber separating mechanism is at least equal or bigger than two-thirds of the diameter of fiber separating roller 3; in any case however, its rim is situated below the operative surface of fiber separating roller 3.
  • the ventilation recess 8 on the other side of body 1 of the fiber separating mechanism has an area of a dimension maximally possible, its shape being, however, influenced and limited by the mounting 12 of fiber separating roller 3.
  • the fiber separating roller according to the present invention works as follows:
  • Said air flow increases the pressure at the immediate proximity of the two front surfaces of the fiber separating roller 3, thus creating an air pressure diaphragm which avoids the penetration of fibers between the front surfaces of the fiber separating roller 3 and the walls of body 1 of the fiber separating mechanism, and thus directing said fibers into the required direction.
  • the fouling of the said space by impurities or its choking, respectively is avoided.
  • roller 3' has a plurality of passages 5' therethrough, such passages having their axes parallel to the axis of roller 3'.
  • the advantages of the fiber separating roller according to the presentinvention lie in its simple modification and its consequent high efficiency, which raises the quality of the yarn and prolongs the lifetime of the components of the fiber separating mechanism.
  • a spinning unit of a machine for manufacturing yam by combined pneumatic and mechanical manipulation said spinning unit operating under sub-atmospheric pressure
  • a fiber separating device disposed in advance of the spinning unit to feed separated fibers thereinto
  • the improvement which comprises a housing for the fiber separating device, said housing being disposed close to and substantially sealed to the spinning chamber, and a fiber separating roller rotatably mounted in the housing of the fiber separating mechanism, said roller being provided with passages therethrough.
  • Apparatus according to claim 1 comprising a rotatably driven spinning member in the spinning chamber, and wherein the roller is mounted for rotation on an axis disposed normal to the axis of rotation of the spinning member.
  • Apparatus according to claim 2 wherein the fiber separating roller has a roughened operative peripheral surface, and comprising a fiber feeding roll disposed to function with the separating roller to feed fibers into th fi r se aratin rne hanis Rip atus ac%:ordi ng to laim 1, wherein the axes of the passages through the fiber separating roller are parallel to the axis of such roller.
  • Apparatus according to claim 1 wherein the axes of the passages through the fiber separating roller are parallel to each other and are skewed in one direction relative to the axis of the fiber separating roller.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
US112858A 1970-03-05 1971-02-05 Fiber separating roller device for spinning units of pneumatic-mechanical yarn manufacturing machines Expired - Lifetime US3681907A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CS146670A CS152754B1 (enrdf_load_stackoverflow) 1970-03-05 1970-03-05

Publications (1)

Publication Number Publication Date
US3681907A true US3681907A (en) 1972-08-08

Family

ID=5349122

Family Applications (1)

Application Number Title Priority Date Filing Date
US112858A Expired - Lifetime US3681907A (en) 1970-03-05 1971-02-05 Fiber separating roller device for spinning units of pneumatic-mechanical yarn manufacturing machines

Country Status (5)

Country Link
US (1) US3681907A (enrdf_load_stackoverflow)
CH (1) CH523347A (enrdf_load_stackoverflow)
CS (1) CS152754B1 (enrdf_load_stackoverflow)
DE (1) DE2104714A1 (enrdf_load_stackoverflow)
GB (1) GB1303958A (enrdf_load_stackoverflow)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3841075A (en) * 1972-04-15 1974-10-15 Krupp Gmbh Opening-up drum for an open end spinning device
US4869060A (en) * 1988-06-22 1989-09-26 Wm. R. Stewart & Sons (Hacklemakers) Limited Fiber opening devices
US4901519A (en) * 1988-07-15 1990-02-20 W. Schlafhorst & Co. Method and apparatus for separating sliver into individual fibers in a sliver opening device
US5497610A (en) * 1993-12-04 1996-03-12 Rieter Ingolstadt Spinnereimaschinenbau Ag Process and device for pneumatic feeding of fibers to the fiber collection surface of an open-end spinning element

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH554426A (de) * 1972-06-07 1974-09-30 Rieter Ag Maschf Offenend-spinnvorrichtung.
CH554425A (de) * 1972-06-07 1974-09-30 Rieter Ag Maschf Offenend-spinnvorrichtung.

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3841075A (en) * 1972-04-15 1974-10-15 Krupp Gmbh Opening-up drum for an open end spinning device
US4869060A (en) * 1988-06-22 1989-09-26 Wm. R. Stewart & Sons (Hacklemakers) Limited Fiber opening devices
US4901519A (en) * 1988-07-15 1990-02-20 W. Schlafhorst & Co. Method and apparatus for separating sliver into individual fibers in a sliver opening device
US5497610A (en) * 1993-12-04 1996-03-12 Rieter Ingolstadt Spinnereimaschinenbau Ag Process and device for pneumatic feeding of fibers to the fiber collection surface of an open-end spinning element

Also Published As

Publication number Publication date
CH523347A (de) 1972-05-31
DE2104714A1 (de) 1971-09-30
GB1303958A (enrdf_load_stackoverflow) 1973-01-24
CS152754B1 (enrdf_load_stackoverflow) 1974-02-22

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