US3447299A - Method and device for rotary conveying of fibers - Google Patents

Method and device for rotary conveying of fibers Download PDF

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Publication number
US3447299A
US3447299A US711294A US3447299DA US3447299A US 3447299 A US3447299 A US 3447299A US 711294 A US711294 A US 711294A US 3447299D A US3447299D A US 3447299DA US 3447299 A US3447299 A US 3447299A
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United States
Prior art keywords
rotary cylinder
fibres
coil
cylinder
fibers
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
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US711294A
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English (en)
Inventor
Eizaburo Negishi
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.)
NEGISHI KOGYO KENKYUSHO KK
Original Assignee
NEGISHI KOGYO KENKYUSHO KK
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
Priority claimed from US253249A external-priority patent/US3161689A/en
Application filed by NEGISHI KOGYO KENKYUSHO KK filed Critical NEGISHI KOGYO KENKYUSHO KK
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Publication of US3447299A publication Critical patent/US3447299A/en
Anticipated expiration legal-status Critical
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
    • D01H4/04—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
    • D01H4/08—Rotor spinning, i.e. the running surface being provided by a rotor
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
    • C07F3/00—Compounds containing elements of Groups 2 or 12 of the Periodic Table
    • C07F3/02—Magnesium compounds

Definitions

  • This invention relates to the field of air spinning or open-end spinning. More particularly, the invention concerns a new method and device for rotary conveying of fibers, in air spinning or open-end spinning, wherein fibers are caused to press against the inner wall surface of a rotary cylinder containing a coaxial coil of a wire-like member and thereby to rotate together with the cylinder as they are automatically and positively conveyed in a sliding manner toward the spinning direction.
  • Another object of the invention is to provide a device as stated above which has relatively simple organisation and operation.
  • a method and a device as stated above wherein fibres are steadily introduced into the head open end of a rotary cylinder containing a coaxial helical coil of a wire-like member also rotating in the same direction but at a ditferential speed relative to the cylinder, and the fibres thus introduced are caused by centrifugal force to open dispersively toward the cylinder inner wall sur face and to straddle and press against the coil and parts of the wall surface exposed between the coil turns, whereby the individual fibres are caused to rotate together with the cylinder wall and, at the same time, to be positively conveyed toward the tail open end of the cylinder by relative screw action of the coil due to the differential speed.
  • FIGURE 1 is an overall elevational view, for the most part in vertical section with related parts in diagrammatic form, shOWing one example of practice of the invention
  • FIGURE 2 is a relatively enlarged elevational view, parts broken away, showing an essential part of the device shown in FIGURE 1;
  • FIGURE 3 is an elevational view, wtih part in vertical section, of a modification of the device shown in FIG. 1.
  • the device shown therein is supplied with a sliver 4 by delivery rolls 1 and 2 of known type which feed the sliver 4 therebetween in a simple manner, or as they draft the arriving rove 25.
  • the sliver 4 thus fed is drawn into the upper inlet mouth 3 of a induction tube 3b of known type by a sucking or drawing force arising from centrifugal force acting on the air within a hollow rotary cylinder 6 described hereinafter, said tube 3 being supported by a supporting arm 3a and the centrifugal force being due to the rotation of the rotary cylinder, or by compressed air force.
  • This compressed air force can be produced, for example, as illustrated in FIG.
  • the rotary cylinder 6 is supported by any suitable means permitting free rotation about its axis and can be driven by any suitable means in a specified direction at a specified rotational speed.
  • the rotary cylinder 6 is provided at its neck part or some other part with a cylindrical rolling contact surface 7 to be pressed against rotatable pulleys 8, 8a and is driven by a 'belt 9 run ning in the tangential direction.
  • a rim 10 at the upper edge of the rolling contact surface 7 rests on and rolls along the upper edge 11 of the pulley 8, and rotary cylinder 6 is thereby supported against its weight.
  • the rotary cylinder 6 can be driven by another means such as suitable means to rotate the pulleys 8, 8a which is caused to contact the rotary cylinder 6 and drive the same by friction.
  • An important feature of the invention is the provision of a method and device wherein, a helical coil of a wire-like member 12 of a suitable cross section is disposed Within the rotary cylinder 6 so that it can be rotated in a slidable manner with respect to the inner wall surface 23 of the rotary cylinder 6 in the same direction but with a specific difference in rotational speed.
  • the coil or wire-like member 12 is fixed at its upper end to a flange 24 at the lower end of a hollow spindle 13 which is coaxially and rotatably supported on bearings 14 and 15 provided in the interior of the rotary cylinder 6 at the head part thereof.
  • the hollow spindle 13 is provided at its upper part with a wharve 16 which can be driven by any of several driving means.
  • the wharve 16 can be driven by a belt 17 driven by a driving means (not shown) and moving in a direction at a specified speed.
  • the wharve 16 can be driven by friction by a pulley (not shown) pressed in contact with the surface of the wharve.
  • the coil of wire-like member'12 coupled to the wharve 16 by way of the hollow spindle 13 is caused to undergo sliding rotation relative to the inner wall surface 23 of the rotary cylinder 6 in the same direction as the surface 23 but with a specific difference in rotational speed relative thereto.
  • the tail end of the rotary cylinder 6 has a frusto-conical constriction with an outer surface 6a, which is surrounded by a cowling 19 of frusto-conic-al form with a specific annular space 18 interposed therebetween, the upper end of the cowling being closed, and the lower end thereof extending downward beyond the lower end of the surface 6a.
  • the cowling 19 is provided at its upper part with an air inlet 20 for supplying air into the space 18 to be discharged along the surface 6a toward the tail end of the cylinder 6.
  • cowling 19 and air inlet 20 are not indispensible members of the present invention and provided for purposes such as increasing the drawing-out force on the fibres in the rotary cylinder 6 and imparting further guidance in the spinning direction to the fibres being conveyed through the rotary cylinder 6, the necessity of this provision depending on and varying with the length of rotary cylinder or kind of fibres being spun. That is, the flow of air through the space 18 has a function similar to that of a fluid ejector to cause the air within the rotary cylinder 6 to be drawn out through the tail end opening thereof and, at the same, assists the conveying action, described hereinafter, of conveying the fibres within the rotary cylinder in their spinning direction, i.e., toward draw-out rolls 21 and 22.
  • the inner wall surface 23 of the rotary cylinder 6 is made rough or provided with a large number of grooves (not shown) in a direction such as the longitudinal direction or an oblique direction thereby to prevent the fibres 5 rotating in pressed state against the surface 23 from slipping in the circumferential direction relative thereto and to cause the fibres 5 to rotate as much as possible together with the inner wall surface 23 at the same speed.
  • the fibres 5 led into the rotary cylinder 6 through the induction tube 3b as described hereinbefore are caused to open and spread toward the inner wall surface of the rotary cylinder by centrifugal force due to the rotation thereof.
  • parts thereof are respectively caused to straddle the individual turns 12a, 12b, etc., of the helical coil of wire-like member 12 as shown at 5:1 in FIG. 2.
  • the remainder parts of the fibres are pressed against the exposed parts of the inner wall surface 23 of the rotary cylinder between the turns of the helical coil.
  • the fibres 5 are caused to rotate as they are supported in a waveform state 5a along an undulating profile defined by the inner wall surface and the coil. For this reason, the fibres rotate together with the rotary cylinder 6, and, simultaneously, a continuous slippage occurs between the fibres and the turns 12a, 12b, 120, etc., of the helical coil rotating with a specific differential speed. At the same time, moreover, the coil produces a screw action whereby the fibres are conveyed progressively in the spinning direction, that is, toward the tail open end of the rotary cylinder 6.
  • the present invention provides a method and device for rotary conveyance of fibres which affords a remarkable advancement relative to spinning techniques in open-end spinning known in the prior art.
  • these fibres are drawn out by the rolls 21 and 22 at the same speed S, no draft is produced between the fibres sliding past the inner wall surface of the rotary cylinder 6 and the fibres thus drawn out.
  • the drawing out speed of the rolls 21 and 22 is increased to a value n times the above mentioned conveying speed S, a draft of n times can be obtained.
  • a further important feature of the invention is that, since every fibre is automatically conveyed toward the outlet end of the rotary cylinder 6, the outlet end is constricted in a frusto-conical form, whereby it is possible to draw out the fibres as a sheaf.
  • This feature is highly advantageous in that it produces effects such as a contraction in the rotating radius of the fibres leaving the outlet end of the rotary cylinder, whereby the air resistance with respect to the fibres is reduced, and, moreover, facilitation of the leading of the fibres to the draw-out rolls 21 and 22 at the time of starting of spinning.
  • a method for rotary conveying of fibers which comprises: introducing said fibers into a hollow rotary cylinder the axial direction, said cylinder rotating at a specific speed and containing coaxially therein a helical coil of a wire-like member rotating in the same direction as the cylinder but with a speed difference relative to the inner Wall surface of the cylinder; permitting the fibers thus introduced to be caused by centrifugal force to open dispersively toward said inner wall surface and to straddle and press against said coil and parts of the inner wall surface exposed between said turns of the coil; and thereby causing the individual fibers to rotate together with the inner wall surface and, at the same time, to be positively conveyed toward the tail open end of the rotary cylinder by relative screw action of the coil due to said speed difference.
  • a device for rotary conveying of fibers comprising:
  • the fibers thus introduced being caused by centrifugal force to open dispersively toward said inner wall surface and to straddle and press against the coil and parts of the inner wall surface exposed between said turns of the coil,
  • said means for driving said coil comprises a hollow spindle (13) fixedly supporting the coil and rotatably supported through bearing (14, 15) by the inner side of the hollow rotary cylinder and driving wharve (16) for driving said hollow spindle.
  • said means for driving said coil comprises a hollow spindle (13) fixedly supporting the coil and rotatably supported through bearings (14, 15) by the inner side of the rotarycylinder and driving means (16) for driving said hollow spindle.

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
US711294A 1963-01-23 1968-03-07 Method and device for rotary conveying of fibers Expired - Lifetime US3447299A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US253249A US3161689A (en) 1963-01-23 1963-01-23 Process for making grignard reagents
JP5913667 1967-09-15

Publications (1)

Publication Number Publication Date
US3447299A true US3447299A (en) 1969-06-03

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ID=26400180

Family Applications (1)

Application Number Title Priority Date Filing Date
US711294A Expired - Lifetime US3447299A (en) 1963-01-23 1968-03-07 Method and device for rotary conveying of fibers

Country Status (6)

Country Link
US (1) US3447299A (fr)
CH (2) CH463501A (fr)
DE (2) DE1219935B (fr)
FR (1) FR1603088A (fr)
GB (2) GB1045326A (fr)
NL (2) NL6812802A (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3676992A (en) * 1970-02-16 1972-07-18 Monsanto Co Fluid spinning process for novel yarns
US3786622A (en) * 1971-11-16 1974-01-22 Negishi Kogyo Kenkyusho Kk Yarn spinning method and apparatus therefor
US3793820A (en) * 1969-03-20 1974-02-26 Elitex Z Textilnilio Shojuenst Device for ringless spinning of fibers

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2506645C3 (de) * 1975-02-17 1986-05-07 Central'nyj naučno-issledovatel'skij institut chlopčatobumažnoj promyšlennosti, Moskau/Moskva Vorrichtung zum Verspinnen von Fasern, insbesondere zur Herstellung grober Garne

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3368339A (en) * 1966-01-27 1968-02-13 Negishi Kogyo Kenkyusho Urawa Rotating spinning tube

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3368339A (en) * 1966-01-27 1968-02-13 Negishi Kogyo Kenkyusho Urawa Rotating spinning tube

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3793820A (en) * 1969-03-20 1974-02-26 Elitex Z Textilnilio Shojuenst Device for ringless spinning of fibers
US3676992A (en) * 1970-02-16 1972-07-18 Monsanto Co Fluid spinning process for novel yarns
US3786622A (en) * 1971-11-16 1974-01-22 Negishi Kogyo Kenkyusho Kk Yarn spinning method and apparatus therefor

Also Published As

Publication number Publication date
GB1207449A (en) 1970-09-30
DE1785358A1 (de) 1972-02-10
GB1045326A (en) 1966-10-12
DE1219935B (de) 1966-06-30
CH483501A (fr) 1969-12-31
NL6812802A (fr) 1969-03-18
NL133490C (fr)
FR1603088A (fr) 1971-03-15
CH463501A (de) 1968-10-15

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