US3696604A - Centrifugal spinning device - Google Patents

Centrifugal spinning device Download PDF

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Publication number
US3696604A
US3696604A US142142A US3696604DA US3696604A US 3696604 A US3696604 A US 3696604A US 142142 A US142142 A US 142142A US 3696604D A US3696604D A US 3696604DA US 3696604 A US3696604 A US 3696604A
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US
United States
Prior art keywords
spinning device
centrifugal spinning
guide tube
set forth
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
US142142A
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English (en)
Inventor
Choji Nozaki
Kiichi Kono
Toshikiko Sakai
Osami Kamigaito
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Toyota Central R&D Labs Inc
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Toyota Central R&D Labs Inc
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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
    • B65H57/24—Guides for filamentary materials; Supports therefor with wear-resistant surfaces
    • 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

  • ABSTRACT A centrifugal spinning device having a feed roller and a presser to feed sliver into a fiber liberating device in- [30] Foreign Application Priority Data eluding an opening roller therein, a spinning rotor for May 12, 1970 Japan ..45/46323 depositing liberated fibers supplied from the fiber liberating device within a cavity therein, and a guide 52 us. Cl. ..s7/ss.9s tube installed on the axis of rotation of the rotor for 51] 1m. (:1. ..D01h 1/12, DOlh 7/00 guiding out twisted y from the rotor. provided with 5 the improvement wherein the entrance opening of the Field of Search ..57/58.9 l-58.95
  • ' guide tube is formed by ceramic or ceramic composite material, thereby to obtain good spinning stability.
  • the present, invention relates to a centrifugal spinning device, and more particularly to an improve ment of the guide tube of the centrifugal spinning device.
  • a centrifugal spinning device of conventional type fibers liberated by a suitable fiber liberating device are fed into a spinning rotor with a cavity rotating at high speed.
  • the fibers are deposited tightly on the inner wall of maximum diameter within the rotor where they are connected to seed yarn to be delivered out through a guide tube installed on the rotation axis of the rotor.
  • the rotation of the rotor twists the fibers taken out of the bundle of deposited fibers.
  • Attempts have been made to provide a durable guide tube for better spinning stability and with less end-downs of yarn.
  • a navel made of carbon steel has been installed at the entrance opening of the guide tube to lessen end-downs of yarn, but sufficient spinning stability has not always been obtained.
  • An object of the present invention is, therefore, to provide a centrifugal spinning device with good spinning stability.
  • Another object of. the present invention is to provide a centrifugal spinning device with which frequency of end-downs of yarn is greatly-lowered for good spinning stability.
  • Still another object of the present invention is to provide a centrifugal spinning device, having the abovementioned characteristics, wherein the navel on the entrance of the guide tube has a higher static frictional coefficient resulting in less minimum twists per inch necessary for spinning to realize a spinning operation with good quality spinning stability.
  • a further object of the present invention is to provide a centrifugal spinning device, having the abovementioned characteristics, wherein the navel is made of ceramic or ceramic composite, thereby to achieve the features of good durability and low production cost.
  • FIG..1 shows a diagrammatic vertical section of a preferred embodiment of the invention
  • FIG. 2 is a fragmentary diagrammatic sectional and enlarged view of the guide tube with neighboring parts of the device shown in FIG. 1;
  • FIG. 3 is a diagrammatic plan view illustrating an extraordinary state of twisting action within the spinning rotor
  • FIG. 4 is a graph indicating the relation between twist multipliers of yarn and average duration time between piecing and end-downs
  • FIG. 5 is a graph indicating the relation between average number of fibers in a cross-section of yarn and minimum twists per inch necessary for spinning yarn;
  • FIG. 6 is a graph comparing different materials for making the navel with respect to their relative static frictional coefficient and minimum twists per inch necessary for spinning.
  • FIG. 1 shows a centrifugal spinning device which comprises a feed roller 1 and a presser 2 cooperating to feed sliver 3 into a fiber liberating device 4.
  • An opening roller 5 rotating within the fiber liberating device 4 combs the silver 3 into liberated fibers 6.
  • the liberated fibers 6 are delivered through a feed channel 7 into a spinning rotor 8 which rotates at high speed, for example at 30,000 rpm.
  • the vortex created by the high speed of the rotor 8 and the high centrifugal force applied to the liberated fibers deposits the fibers 6 tightly on the inside surface of wall 9 at its portion of maximum diameter to form a bundle 10.
  • a seed yarn is inserted into the spinning rotor 8 through the guide tube 12.
  • the seed yarn is connected to a portion of the bundle l0 and delivered out of the tube 12 as yarn l 1 at a lower speed than the circumferential speed of the inner wall 9 of the spinning rotor 8, the delivery speed of yarn 11 being, for instance 30 m/min.
  • the yarn 11 has a twist every 1 mm thereon, that is, the yarn l 1 has 25.4 twists per inch.
  • the centrifugal spinning device comprises the guide tube 12 disposed coaxial with the rotation axis of the spinning rotor 8.
  • a navel 13 with a smooth guiding face 13a is provided at the entrance opening of the guide tube 12 to produce smooth contact between the guide tube 12 and the bundle of fibers 10 to be twisted.
  • a disc separater 14 is installed on the guide tube 12, so that the liberated fibers 6 delivered into the spinning rotor 8 are prevented from touching the bundle of fibers 10 while under twisting action to make the yarn 11.
  • the guiding face 13a of the navel 13 is required to be as smooth as possible.
  • buff-polished navels made of carbon steel are generally provided.
  • Thebuff-polished carbon steel navels realize some good spinning stability in spinning out cotton yarn of a specific yarn number of 20s Ne in English Cotton Count.
  • the carbon steel navels have an undesirable tendency to increase end-downs of yarn and to lower the minimum twists per inch necessary for spinning.
  • the spinning operation has poor stability.
  • the end-downs of yarn are also caused by entangled fibers and impurities existing within the bundle of fibers 10 between the inner wall 9 of the spinning rotor 8 and the navel 13, and/or by branched fibers 15 as illustrated in FIG. 3.
  • the twisting action of the bundle of fibers caused by the spinning rotor 8 is not limited to that within the space between the inner wall 9 and the navel l3. Unnecessary additional twisting action takes place within the guide tube over the navel 13, and the end-downs of yarn increases especially when the average number of fibers of the bundle of fibers 10 becomes small, which, in turn, increases the minimum twists per inch necessary for spinning.
  • the fundamental concept of the present invention is based on analysis of the relation between the static frictional coefficient of the material of navel 13 and the minimum twists per inch necessary for spinning.
  • a ceramic or ceramic composite is utilized as the material of the navel 13, the ceramic or the ceramic composite material being selected as having the most appropriate static frictional coefficient and good durability, whereby good spinning stability with less end-downs of yarn is obtained in spinning out yarn within a certain limited variety of thickness from fibers within a certain limited variety of thickness.
  • FIG. 6 there is shown the relation between the static frictional coefficient (plotted as abscissa ,u.) and minimum twists per inch necessary for spinning (plotted as ordinate 'r), of the navel 13 in spinning yarn of 205 Ne, s Ne or s Ne out of fibers of polyester 3 denier. Resulting curves for these yarns each include points measured for navels 13 made of different materials such as polyforrnaldehyde, polycarbonate, carbon steel, ceramic I-I, epoxy resin, ceramic L, and the like.
  • Ceramic L or H are made of lithia-aluminosilicate respectively sintered at l,150 C for 10 hours and at l,260 C for 10 hours.
  • the navels made of these materials show higher static frictional coefficients than those made of carbon steel, the material heretofore in use. This lowers the minimum twists per inch necessary for spinning, lessens end-downs of yarn in spinning 205 Ne, 30s Ne and 35s Ne yarns and increases the spinning stability.
  • Ceramic materials also have the desirable characteristic that their static frictional coefficient and wear-resistance can be controlled easily by control of the sintering temperatures.
  • epoxy resin shows good spinning stability, as indicated in FIG. 6, its wearresistance is very poor, so that this material is not recommended for practical use.
  • a sintered body made of a ceramic powder mixed with a metallic material such as chromium or the like is suitable for making the navels. This material is particularly practical for obtaining good spinning stability when static electricity is produced in operation.
  • navel is added to and positioned at the entrance openmg of the guide tube, but the entrance opening 1 self can be made of a ceramic, or ceramic composite, material in a preferred shape.
  • a fiber liberating device including an opening roller therein receiving said sliver, a spinning rotor for depositing liberated fibers supplied from said fiber liberating device within a cavity in the rotor, and a guide tube coaxial with said rotor for receiving deposited liberated fibers and guiding twisted yarn out of the rotor, the improvement wherein said guide tube has a fiber entrance opening formed of ceramic material.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
US142142A 1970-05-12 1971-05-11 Centrifugal spinning device Expired - Lifetime US3696604A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1970046323U JPS5419386Y1 (enrdf_load_stackoverflow) 1970-05-12 1970-05-12

Publications (1)

Publication Number Publication Date
US3696604A true US3696604A (en) 1972-10-10

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US142142A Expired - Lifetime US3696604A (en) 1970-05-12 1971-05-11 Centrifugal spinning device

Country Status (5)

Country Link
US (1) US3696604A (enrdf_load_stackoverflow)
JP (1) JPS5419386Y1 (enrdf_load_stackoverflow)
DE (1) DE2122998A1 (enrdf_load_stackoverflow)
FR (1) FR2088527B1 (enrdf_load_stackoverflow)
GB (1) GB1313463A (enrdf_load_stackoverflow)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3822541A (en) * 1972-01-14 1974-07-09 Platt International Ltd Open end spinning apparatus
US3828539A (en) * 1972-03-13 1974-08-13 Platt International Ltd Open-end textile spinning machines
US3950929A (en) * 1973-10-17 1976-04-20 Daiwa Boseki Kabushiki Kaisha Method of feeding a sliver into a combing section of an open end spinning machine and a presser therefor
US3965661A (en) * 1973-04-21 1976-06-29 Kabushiki Kaisha Toyoda Jidoshokki Seisakusho Thread drawoff tube for an open-end spinning unit
US5160097A (en) * 1988-10-07 1992-11-03 Iro Ab Yarn storage and feed device
US5265406A (en) * 1990-03-09 1993-11-30 Schubert & Salzer Maschinenfabrik Ag Open-end spinning device

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3440812A (en) * 1966-10-11 1969-04-29 Vyzk Ustav Barlnarsky Method and apparatus for the continuous ringless spinning of yarn from separated staple fibers in a rotating spinning chamber
US3481129A (en) * 1966-11-08 1969-12-02 Tmm Research Ltd Open end spinning apparatus
US3584451A (en) * 1968-12-13 1971-06-15 Vyzk Ustav Bavlnarsky Fiber processing method and device

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3006775A (en) * 1959-09-23 1961-10-31 Gen Electric Ceramic material and method of making the same

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3440812A (en) * 1966-10-11 1969-04-29 Vyzk Ustav Barlnarsky Method and apparatus for the continuous ringless spinning of yarn from separated staple fibers in a rotating spinning chamber
US3481129A (en) * 1966-11-08 1969-12-02 Tmm Research Ltd Open end spinning apparatus
US3584451A (en) * 1968-12-13 1971-06-15 Vyzk Ustav Bavlnarsky Fiber processing method and device

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3822541A (en) * 1972-01-14 1974-07-09 Platt International Ltd Open end spinning apparatus
US3828539A (en) * 1972-03-13 1974-08-13 Platt International Ltd Open-end textile spinning machines
US3965661A (en) * 1973-04-21 1976-06-29 Kabushiki Kaisha Toyoda Jidoshokki Seisakusho Thread drawoff tube for an open-end spinning unit
US3950929A (en) * 1973-10-17 1976-04-20 Daiwa Boseki Kabushiki Kaisha Method of feeding a sliver into a combing section of an open end spinning machine and a presser therefor
US5160097A (en) * 1988-10-07 1992-11-03 Iro Ab Yarn storage and feed device
US5265406A (en) * 1990-03-09 1993-11-30 Schubert & Salzer Maschinenfabrik Ag Open-end spinning device

Also Published As

Publication number Publication date
FR2088527A1 (enrdf_load_stackoverflow) 1972-01-07
JPS5419386Y1 (enrdf_load_stackoverflow) 1979-07-18
DE2122998A1 (de) 1971-12-02
GB1313463A (en) 1973-04-11
FR2088527B1 (enrdf_load_stackoverflow) 1975-04-18

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