US3776669A - Apparatus for collecting centrifugally spun filaments - Google Patents

Apparatus for collecting centrifugally spun filaments Download PDF

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Publication number
US3776669A
US3776669A US00213297A US3776669DA US3776669A US 3776669 A US3776669 A US 3776669A US 00213297 A US00213297 A US 00213297A US 3776669D A US3776669D A US 3776669DA US 3776669 A US3776669 A US 3776669A
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US
United States
Prior art keywords
filaments
rotatable
spinning device
collecting
air
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
US00213297A
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English (en)
Inventor
Y Ito
I Kameyama
T Araki
Y Kawai
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.)
Kureha Corp
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Kureha Corp
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
Application filed by Kureha Corp filed Critical Kureha Corp
Application granted granted Critical
Publication of US3776669A publication Critical patent/US3776669A/en
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Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D5/00—Formation of filaments, threads, or the like
    • D01D5/18—Formation of filaments, threads, or the like by means of rotating spinnerets

Definitions

  • the present invention is a collecting apparatus designed to be used in combination with the spinning cylinder or spinning nozzle of a conventional centrifugal melt spinning machine.
  • the apparatus of this invention includes at least one air-jet which surrounds the rotating spinning device and serves to blow the extruded filaments against a rotating collecting surface, which collecting surface is designed to allow easy passage of the air-stream therethrough and which catches and collects the pitch filaments.
  • the device of the present invention also includes a stationary cutter located between the rotating spinning device and the rotating collecting surface which serves to cut the filaments into predetermined lengths.
  • This apparatus is capable of producing pitch filament bundles of an unlimited continuous length with a minimum amount of breakage. The bundle is formed with a plurality of filaments, each cut to a given length, with the filaments arranged in a staggered relationship.
  • FIG. 1 is a longitudinal cross-sectional view taken along the center line of the apparatus of this invention
  • FIG. 2 is a bottom plan view of the apparatus in FIG.
  • FIG. 3 is a cross-sectional view taken along the line 3-3 of FIG. 2;
  • FIG. 4 is a view, partially in cross section, of the apparatus taken along line 4-4 of FIG. 2.
  • the rotating collecting surface is an air comb" in the form of a plurality of closely spaced T shaped pins.
  • the rotating air-comb is situated around the circumference of the rotating spinning device of a conventional centrifugal melt spinning machine.
  • a stationary orifice air-jet or jets is provided around the periphery of the rotating spinning device, between the rotating spinning device and the rotating air-comb and serves to blow the extruded brittle filaments against the inner surface of the rotating air-comb.
  • a cutter is also provided on a stationary surface, located at a point between the rotating spinning device and the rotating air comb.
  • the type of spinning device used is of. little or no consequence.
  • the present invention may be used with a wide variety of centrifugal melt spinning machines including rotary cylinder types and rotary nozzle types.
  • the collecting apparatus of the present invention is described in conjunction with a melt spinning machine of the rotary nozzle type.
  • a rotatable spinning cylinder 10 is designed to receive molten pitch, which pitch collects in the central inner portion of a rotary bowl 12 which is rigidlyattached to the lower portion-of the rotatable spinning cylinder 10.
  • the rotary bowl 12 is provided with a plurality of orifices or spinning nozzles 14. The molten pitch is forced through the nozzles 14 by centrifugal forces created by the rotation of the spinning cylinder 10.
  • the uniform airstream so produced serves to carry or draft the pitch filaments along the lower surface of a stationary disc member 16 which surrounds the spinning cylinder 10.
  • the extruded filaments are blown in whirls onto thecollecting surface of a rotary air comb 36.
  • the air comb 36 forms a rotatable cylindrical collecting surface that is the collecting
  • the air comb 36 is supported by a rotary ring assembly, generally designated by the numeral 30.
  • the rotary ring assembly 30 includes a gear member 34 which surroundsthe stationary disc 16 and which has gear teeth on its internal surface.
  • the ring shaped bracket member 32 is rigidly attached to the bottom surface of the gear member 34.
  • the bracket member 32 has an inwardly extending flange or tongue 33.
  • a roller assembly generally designated by the numeral 22, includes ring shaped bracket member 24 which is stationary and extends around the circumference of the stationary dics 16, to which it is rigidly affixed.
  • the bracket member 24 supports at least one roller member 26 which rotates about a pin 28.
  • the roller member 26 is provided with a groove 27 which receives and supports the tongue 33 of the bracket member 32.
  • the rotary air comb 36 is formed from a plurality of T shaped pins, spaced several centimeters apart and individually attached to the bracket member 32. The rotary comb serves to catch the extruded filaments while at the same time permits the easy passage therethrough of the airstream emanating from the ring shaped orifice 20.
  • the geared ring assembly 30 is driven by gear member 38 which is carried by a drive shaft 40 mounted in bearing members 42 which in turn are supported by drive shaft brackets 44.
  • the drive shaft 40 carries a pulley member 46 which is shown as being driven by a V" type belt 48.
  • FIG. 2 shows the position of the cutter 50 in relation to the rotary comb 36 and the stationary disc 16.
  • FIGS. 3 and 4 whichare crosssectional views taken along lines 33 and 44, respectively, of FIG. 2, also show the cutter 50.
  • a slide member 52 is mounted on the cutter 50 to receive the filament bundle. The filament bundle is continuously removed from the air comb 36 by means of an air nozzle 54 which serves to blow the collected filament bundle ofi of the air comb into the slide member 52.
  • the filaments centrifugally spun from the orifices 14 are blown in whirls along the under surface of the stationary disc 16 by means of the air stream emanating from the orifice 20 and then against the rotary comb 36 where they are collected in the form of a bundle of continuous length.
  • the rotary comb 36 is rotated slowly in a direction which may be the same as or counter to the rotational direction of the rotary bowl 12.
  • the air stream of nozzle 54 forces the filaments against the inner edge of the cutter 50 which serves to cut them into predetermined lengths.
  • the cut filaments collect on the rotary air comb 36 until forced therefrom by the air stream from a second air jet or nozzle 54.
  • the bundle 56 leaving the air comb 36 is removed by means of the slide member 52.
  • the air stream from the circular orifice 20 may be regulated at speeds which may vary from several hundred meters to several thousand meters per second.
  • the length of the cut filaments will roughly correspond to the length of the circumference of the rotary comb 36.
  • the filament bundle will be removed from the air comb 36 at a rate corresponding to the number of rotations per minute of the rotary comb.
  • An apparatus for collecting filaments extruded from a rotatable spinning device of a centrifugal melt spinning machine comprising:
  • At least one stationary air jet positioned to convey the extruded filaments from the rotatable spinning device onto said cylindrical collection surface
  • a stationary cutter mounted between the rotatable spinning device and said rotatable cylindrical collecting surface, said cutter serving to cut the filaments to a predetermined length.
  • the apparatus of claim 1 additionally comprising a second air jet positioned to force the filaments off of said cylindrical collection surface.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
  • Preliminary Treatment Of Fibers (AREA)
  • Inorganic Fibers (AREA)
US00213297A 1970-12-29 1971-12-29 Apparatus for collecting centrifugally spun filaments Expired - Lifetime US3776669A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP45120974A JPS4825003B1 (de) 1970-12-29 1970-12-29

Publications (1)

Publication Number Publication Date
US3776669A true US3776669A (en) 1973-12-04

Family

ID=14799627

Family Applications (1)

Application Number Title Priority Date Filing Date
US00213297A Expired - Lifetime US3776669A (en) 1970-12-29 1971-12-29 Apparatus for collecting centrifugally spun filaments

Country Status (4)

Country Link
US (1) US3776669A (de)
JP (1) JPS4825003B1 (de)
DE (1) DE2164692C3 (de)
GB (1) GB1375560A (de)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3209033A1 (de) * 1981-03-12 1982-10-28 Kureha Kagaku Kogyo K.K., Nihonbashi, Tokyo Verfahren zur herstellung von kohlenstoffasern mit einer im querschnitt ungeordneten mosaikstruktur
US4408972A (en) * 1982-02-17 1983-10-11 Baker Perkins Inc. Centrifugal pelletizers
FR2584105A1 (fr) * 1985-06-28 1987-01-02 Kureha Chemical Ind Co Ltd Procede et appareil de fabrication d'un feutre de fibres de carbone et feutre obtenu par leur mise en oeuvre
US4861653A (en) * 1987-09-02 1989-08-29 E. I. Du Pont De Nemours And Company Pitch carbon fibers and batts
US5066430A (en) * 1989-03-20 1991-11-19 E. I. Du Pont De Nemours And Company Process for centrifugally spinning pitch carbon fibers
US5075063A (en) * 1986-11-29 1991-12-24 Barmag Ag Spinning centrifuge
US20060141084A1 (en) * 2003-04-03 2006-06-29 Armantrout Jack E Rotary process for forming uniform material
US20080050304A1 (en) * 2004-08-11 2008-02-28 National University Corporation Gunma University Method of Producing Carbon Nanomaterials and Centrifugal Melt Spinning Apparatus
US20140159262A1 (en) * 2012-08-06 2014-06-12 Fiberio Technology Corporation Devices and methods for the production of microfibers and nanofibers in a controlled environment

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2587710A (en) * 1951-11-01 1952-03-04 United States Gypsum Co Apparatus and process for making mineral wool
US2605499A (en) * 1950-09-01 1952-08-05 Johns Manville Method and apparatus for drawing fine fibers
US2931422A (en) * 1954-10-26 1960-04-05 Owens Corning Fiberglass Corp Method and apparatus for forming fibrous glass
US3097085A (en) * 1959-07-02 1963-07-09 Wallsten Hans Method and means for the manufacture of fibres of thermoplastic material
US3358323A (en) * 1963-03-25 1967-12-19 Dow Chemical Co Processing of plastic
US3649234A (en) * 1968-06-20 1972-03-14 Saint Gobain Method and apparatus for production of fibers from thermoplastic materials, such as glass, rock, slag or the like

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2605499A (en) * 1950-09-01 1952-08-05 Johns Manville Method and apparatus for drawing fine fibers
US2587710A (en) * 1951-11-01 1952-03-04 United States Gypsum Co Apparatus and process for making mineral wool
US2931422A (en) * 1954-10-26 1960-04-05 Owens Corning Fiberglass Corp Method and apparatus for forming fibrous glass
US3097085A (en) * 1959-07-02 1963-07-09 Wallsten Hans Method and means for the manufacture of fibres of thermoplastic material
US3358323A (en) * 1963-03-25 1967-12-19 Dow Chemical Co Processing of plastic
US3649234A (en) * 1968-06-20 1972-03-14 Saint Gobain Method and apparatus for production of fibers from thermoplastic materials, such as glass, rock, slag or the like

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3209033A1 (de) * 1981-03-12 1982-10-28 Kureha Kagaku Kogyo K.K., Nihonbashi, Tokyo Verfahren zur herstellung von kohlenstoffasern mit einer im querschnitt ungeordneten mosaikstruktur
US4746470A (en) * 1981-03-12 1988-05-24 Kureha Kagaku Kogo Kabushiki Kaisha Process for the preparation of carbon fibers having structure reflected in cross sectional view thereof as random mosaic
US4408972A (en) * 1982-02-17 1983-10-11 Baker Perkins Inc. Centrifugal pelletizers
FR2584105A1 (fr) * 1985-06-28 1987-01-02 Kureha Chemical Ind Co Ltd Procede et appareil de fabrication d'un feutre de fibres de carbone et feutre obtenu par leur mise en oeuvre
DE3622092A1 (de) * 1985-06-28 1987-01-08 Kureha Chemical Ind Co Ltd Verfahren und vorrichtung zur herstellung von kohlefasermatten
US4762652A (en) * 1985-06-28 1988-08-09 Kureha Kagaku Kogyo Kabushiki Kaisha Process and apparatus for producing carbon fiber mat
US5075063A (en) * 1986-11-29 1991-12-24 Barmag Ag Spinning centrifuge
US4861653A (en) * 1987-09-02 1989-08-29 E. I. Du Pont De Nemours And Company Pitch carbon fibers and batts
US5066430A (en) * 1989-03-20 1991-11-19 E. I. Du Pont De Nemours And Company Process for centrifugally spinning pitch carbon fibers
US20060141084A1 (en) * 2003-04-03 2006-06-29 Armantrout Jack E Rotary process for forming uniform material
US20060154549A1 (en) * 2003-04-03 2006-07-13 Armantrout Jack E Rotary process for forming uniform material
US7118698B2 (en) 2003-04-03 2006-10-10 E. I. Du Pont De Nemours And Company Rotary process for forming uniform material
US7621731B2 (en) 2003-04-03 2009-11-24 E.I. Du Pont De Nemours And Company Rotary process for forming uniform material
US7786034B2 (en) 2003-04-03 2010-08-31 E.I. Du Pont De Nemours And Company Rotary process for forming uniform material
US20080050304A1 (en) * 2004-08-11 2008-02-28 National University Corporation Gunma University Method of Producing Carbon Nanomaterials and Centrifugal Melt Spinning Apparatus
US7763228B2 (en) * 2004-08-11 2010-07-27 National University Corporation Gunma University Method of producing carbon nanomaterials and centrifugal melt spinning apparatus
US20140159262A1 (en) * 2012-08-06 2014-06-12 Fiberio Technology Corporation Devices and methods for the production of microfibers and nanofibers in a controlled environment
US9827728B2 (en) * 2012-08-06 2017-11-28 Clarcor Inc. Devices and methods for the production of microfibers and nanofibers in a controlled environment

Also Published As

Publication number Publication date
DE2164692C3 (de) 1974-03-07
JPS4825003B1 (de) 1973-07-25
GB1375560A (de) 1974-11-27
DE2164692A1 (de) 1972-07-20
DE2164692B2 (de) 1973-08-02

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