US3772868A - Fiber conveying device for an open-end spinning apparatus - Google Patents

Fiber conveying device for an open-end spinning apparatus Download PDF

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Publication number
US3772868A
US3772868A US00175049A US3772868DA US3772868A US 3772868 A US3772868 A US 3772868A US 00175049 A US00175049 A US 00175049A US 3772868D A US3772868D A US 3772868DA US 3772868 A US3772868 A US 3772868A
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United States
Prior art keywords
fibers
electrostatic field
yarn
discrete
clusters
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Expired - Lifetime
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US00175049A
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English (en)
Inventor
R Amato
L Chabot
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Electrospin Corp
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Electrospin Corp
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Publication date
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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
    • D01H4/28—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 using electrostatic fields

Definitions

  • ABSTRACT U.S. Cl. 57/58.95, 57/91, 57/156 An improved fiber conveying device for an open end spinning apparatus in which textile fibers are adapted [58] meld of Search 'g f to be introduced from a feed point in clusters of discrete fibers into an electrostatic field which transports References Cited the fibers to a spinning device where they are twisted into arn.
  • the invention relates to an improved in open-end type spinning frames and more particularly to an apparatus amd method of conveying textile fibers and introducing them as discrete groups or clusters into an electrostatic field that is effective in transporting and assembling each successive cluster on a yarn tail which, with the cooperation of a continuously rotating spinning device, twists the assembled fibers into yarn.
  • the electrostatic field extends across an air gap between a drafting system that mechanically advances the fibers into the field and a spinning head for twisting and spinning the fibers to form yarn.
  • the fibers are supplied to the drafting system in the form of roving or sliver and are discharged from the drafting system as a stream of discrete fibers into the electrostatic field.
  • the field is effective to align the fibers and define a flow path which the fibers follow to the spinning head.
  • Such drafting systems usually include a pair of driven inlet drafting rollers between which roving'or sliver is fed.
  • a pair of drivenintermediate belts entrained about driven rollers and so-called nose bars and intermediate idler rollers are caused to advance fibers therebetween to a pair of fiber discharge drafting rollers.
  • the fibers enter the electrostatic field as a stream of discrete fibers.
  • a yarn tail extends from said head into the electrostatic field and is adapted to receive the flow of fibers. for advancement through said spinning head which twists them into yarn.
  • the spinning head utilized with the fiber conveying device of the present invention forms the subject matter of a separate US. Pat. application, Ser. No. 135,320, filed Apr. 19, 1971 and entitled Spinning Head, now U. S. Pat. No. 3,706,193, and assigned to the same assignee as this application.
  • This spinning head includes a rotatable spindle with a so-called gripper carried thereby.
  • the yarn tail referred to above extends upwardly from the gripper through the fiber inlet end of the spindle into the electrostatic field and during rotation of the spindle said gripper is effective in twisting and spinning the fibers into yarn which is drawn downwardly through the exit end of said spindle.
  • the present invention provides a means for maintaining a physical separation between the fibers being assembled to the yarn tail and those being ejected from the discharge drafting rollers into the electrostatic field or so-called transport zone.
  • the fiber conveying device of the present invention includes the usual inlet drafting rollers and intermediate rollers about which fiber advancing belts are entrained.
  • the fiber discharge rollers which include a socalled cot roller and front roller are formed so as to eject the fibers into the electrostatic field or transport zone in the form of clusters or bunches.
  • the ejection of these clusters or bunches of fibers is at a rapid and regular rate but with sufficient hasitation between ejections so as to maintain a hesitation separation between the fibers being assembled to the yarn tail and those being ejected by the discharge rollers.
  • the cot roller and front roller are disposed in nipping relation and a portion of the outer peripheral surface of the front roller is machined to form a land which during rotation thereof permits only the unmachined peripheral surface of the front roller to make nipping contact with the cot roller.
  • the fiber discharge rollers are continuously rotating and are effective in intermittently ejecting clusters of fibers into the fiber transport zone.
  • the unmachined surface of the front roller is in nipping contact with the peripheral surface of the cot roller, a cluster of fibers is ejected and when this nipping contact between the rollers is lost, advancement of the fibers ceases until further rotation again brings these surfaces into contact.
  • a more specific object of the invention is to provide an improved drafting system for an electrostatic spinning apparatus which will prevent excessive negative twisting of the fibers in the area intermediate their source of supply and the spinning head.
  • FIG. 1 is a perspective view and partially in section of a portion of an electrostatic spinning apparatus to which the device according to the invention is applicable, and
  • FIG. 2 is a sectional view in side elevation showing the drafting systems fiber discharge rollers and the configuration of the front roll and the manner of ejecting fibers in discrete clusters DESCRIPTION OF THE PREFERRED EMBODIMENT
  • the spinning apparatus shown embodies a fiber drafting system generally identified by numeral and includes a pair of driven inlet drafting rollers 11 and 12 between which roving or sliver 13 is fed.
  • the sliver is advanced between a pair of drafting rollers 14 and 15 and then a similar pair of rollers depicted by numerals l6 and 17. As the sliver is advanced between the drafting rollers, the individual fibers become straightened, aligned and prepared for presentation to the means for spinning them into yarn as is well known to those familiar with the art.
  • the fibers after leaving the rollers 16 and 17 are advanced further through the drafting system by a pair of endless belts entrained about and driven by a pair of drive rollers 18 and 19. These belts are driven about a so-called nose bar and form a path of travel continuous with that provided by the preceding pairs of drafting rollers.
  • the endless belt driven by roller 18 and its guiding nose bar are identified by numerals 20 and 21 respectively and the endless belt driven by roller 19 and its guiding nose bar are shown at 22 and 23.
  • Endless belts 20 and 22 direct the fibers being advanced therebetween to a pair of fiber discharge rollers 24 and 25.
  • roller 24 is commonly referred to as the cot roller and roller 25 as the front roller.
  • a portion of a spinning head is shown at 26 along with its fiber inlet end 27 from which extends a so-called yarn tail 28.
  • the discharge rollers 24 and 25 are caused to rotate continuously during the performance of their intended function in the direction of the indicating arrows 29 and 30 respectively and, being in nipping relation, are effective in ejecting fibers into the electrostatic field which fills the gap between the spinning head 26 and said discharge rollers.
  • This electrostatic field forms a flow path for the fibers and as they are ejected into said field, they are caused to move toward and assemble to the yarn tail 28 which is continuously being drawn into the spinning head that twists said fibers into yarn.
  • roller 25 or the so-called front roller has a portion of its outer peripheral surface removed as by machining, forming a land 32 which is of lesser diameter than the unmachined peripheral surface thereof.
  • a land 32 which is of lesser diameter than the unmachined peripheral surface thereof.
  • textile fibers are fed into the drafting system in the form of roving or sliver which is advanced therethorugh by the plurality of pairs of drafting rollers and rotating endless belts or socalled aprons disposed adjacent the discharge rollers.
  • the discharge rollers are effective in ejecting clusters of discrete fibers into the electrostatic field which transports them to a position for assembly to a yarn tail extending into said field from the spinning head.
  • An improved open-end spinning process in which textile fibers are conveyed from a feed point through a transport zone to a fiber assembly point by means of an electrostatic field, said process comprising providing a supply of fibers for introduction into the electrostatic field, introducing separated discrete clusters of discrete fibers into the electrostatic field, assembling each successive cluster on a yarn tail located a predetermined distance from the point of entry of fibers into the electrostatic field and continuously twisting the assembled fibers into yarn.
  • An improved fiber conveying device for an openend spinning apparatus of the type in which discrete textile fibers are introduced into an electrostatic field and transported for assembly to a yarn tail extending into said field from a twisting device for continuously twisting the assembled fibers into yarn, said improved fiber conveying device comprising a plurality of pairs of juxtaposed drafting rollers for advancing the fibers therebetween and means for introducing separate discrete clusters of discrete fibers from said conveying device into said electrostatic field for transport by the latter to a point of assembly on said yarn tail.
  • said means for introducing discrete clusters of fibers into said electrostatic field comprises at least one of a pair of said drafting rollers having a land formed on the peripheral surface thereof whereby continuous advance of said fibers is interrupted by periodic and momentary loss of contact between the peripheral surfaces of the pair of said drafting rollers.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
US00175049A 1971-08-26 1971-08-26 Fiber conveying device for an open-end spinning apparatus Expired - Lifetime US3772868A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US17504971A 1971-08-26 1971-08-26

Publications (1)

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US3772868A true US3772868A (en) 1973-11-20

Family

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Application Number Title Priority Date Filing Date
US00175049A Expired - Lifetime US3772868A (en) 1971-08-26 1971-08-26 Fiber conveying device for an open-end spinning apparatus

Country Status (8)

Country Link
US (1) US3772868A (ja)
JP (1) JPS4835135A (ja)
CA (1) CA963749A (ja)
CH (1) CH540355A (ja)
DE (1) DE2241796A1 (ja)
FR (1) FR2150530B1 (ja)
GB (1) GB1367221A (ja)
IT (1) IT982386B (ja)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51132131A (en) * 1975-05-14 1976-11-17 Fuji Kaki Kouji Kk Means for conveying works in surface trfatment facility
JPS52142937U (ja) * 1977-04-14 1977-10-29
JPS54149186A (en) * 1978-05-11 1979-11-22 Suzuki Motor Co Ltd Conveyor
JPS58112703U (ja) * 1982-01-28 1983-08-02 三菱電機株式会社 油圧操作装置
JPS58114042U (ja) * 1982-01-28 1983-08-04 海上電機株式会社 シリコンウエハ−の洗浄装置
FR2611439B1 (fr) * 1987-03-02 1989-07-13 Grandi Rene Dispositif de transfert de cuisson ou de refrigeration a selection d'introduction et d'evacuation automatique des paniers contenant des aliments ou produits a duree de cuisson et de refroidissement variable

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3105349A (en) * 1954-05-28 1963-10-01 Celanese Corp Method and apparatus for producing novelty yarn
US3176351A (en) * 1963-09-06 1965-04-06 Collins & Aikman Corp Apparatus for producing composite yarn
US3394538A (en) * 1966-01-14 1968-07-30 Celanese Corp Spun yarn
US3439486A (en) * 1967-09-15 1969-04-22 Deering Milliken Res Corp Spinning
US3665695A (en) * 1970-08-25 1972-05-30 Electrospin Corp Textile machine
US3670486A (en) * 1970-12-09 1972-06-20 North American Rockwell Electrostatic spinning head funnel

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3105349A (en) * 1954-05-28 1963-10-01 Celanese Corp Method and apparatus for producing novelty yarn
US3176351A (en) * 1963-09-06 1965-04-06 Collins & Aikman Corp Apparatus for producing composite yarn
US3394538A (en) * 1966-01-14 1968-07-30 Celanese Corp Spun yarn
US3439486A (en) * 1967-09-15 1969-04-22 Deering Milliken Res Corp Spinning
US3665695A (en) * 1970-08-25 1972-05-30 Electrospin Corp Textile machine
US3670486A (en) * 1970-12-09 1972-06-20 North American Rockwell Electrostatic spinning head funnel

Also Published As

Publication number Publication date
FR2150530B1 (ja) 1976-08-13
DE2241796A1 (de) 1973-03-08
CA963749A (en) 1975-03-04
IT982386B (it) 1974-10-21
FR2150530A1 (ja) 1973-04-06
GB1367221A (en) 1974-09-18
CH540355A (de) 1973-08-15
JPS4835135A (ja) 1973-05-23

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