US2940243A - Spinning funnel - Google Patents

Spinning funnel Download PDF

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Publication number
US2940243A
US2940243A US831093A US83109359A US2940243A US 2940243 A US2940243 A US 2940243A US 831093 A US831093 A US 831093A US 83109359 A US83109359 A US 83109359A US 2940243 A US2940243 A US 2940243A
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US
United States
Prior art keywords
funnel
thread
rims
spinning
projections
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
US831093A
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English (en)
Inventor
Verschragen Hermanus Petrus
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.)
Akzona Inc
Original Assignee
American Enka 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 American Enka Corp filed Critical American Enka Corp
Application granted granted Critical
Publication of US2940243A publication Critical patent/US2940243A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H1/00—Spinning or twisting machines in which the product is wound-up continuously
    • D01H1/08—Spinning or twisting machines in which the product is wound-up continuously cup, pot or disc type, in which annular masses of yarn are formed by centrifugal action
    • 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
    • D01D7/00—Collecting the newly-spun products
    • D01D7/02—Collecting the newly-spun products in centrifugal spinning pots

Definitions

  • This invention relates to the manufacture of rayon by the centrifugal process and more particularly to an improved spinning funnel for use in the aforesaid process.
  • the thread After being spun and extruded through a coagulating medium is collected in a centrifuge, bucket or pot which is rotated at a relatively high speed.
  • the thread is laid up in the form of a cake by means of the centrifugal force created by the rotation of the bucket and the movement of the thread guide funnel.
  • Another object of this invention is to provide a spinning funnel the discharge end of which is constructed in such a fashion that the frictional force exerted against the thread passing thereover is substantially even.
  • a further object of this invention is to provide spinning funnels the discharge ends of which may be constructed simply and identically.
  • the discharge end of the spinning funnel with a series of projections and depressions which have at least two concentric annular rims separated by an annular groove. These rims extend in the peripheral direction of the funnel and projection in the axial direction a substantially equal distance. Such rims permit the accumulation of liquid in the annular groove separating them during the centrifugal process for manufacturing rayon. This accumulation of liquid substantially reduces the friction generated by the thread passing over the funnel discharge end.
  • Figure 2 is a perspective view of the lower portion of this improved funnel.
  • reference numeral 1 indicates generally a spinning funnel utilized in the man ufacture of rayor by the centrifugal process.
  • the spinning machine, centrifuge or pot and reciprocating aim for the funnel have been omitted from the drawing for the sake of clarity, it being understood that such are of conventional design and well known to those skilled inthe art.
  • Funnel 1 is provided with a plurality of narrow or necked down portions 2 along which thread 3 slides during the collection operation, a conical mouth 7 through which thread 3 enters the funnel, and a discharge end 4 through which the thread passes from the funnel to the centrifuge (not shown).
  • the discharge end 4 of funnel 1 is provided with a series of projections 5 with the resultant depressions 10 therebetween.
  • the thread traveling over this series of projections and depressions is caused to undulate. This movement is aided by the conventional traversing movement of the funnel along the axis of the rotating centrifuge. As pointed out in US. Patent No. 2,100,595, this combined movement causes the thread being collected to move in a sinuous or undulating manner. This deposition of the thread prevents a number of separate convolutions from superimposing upon each other.
  • Rims 8 and 9 extending in the peripheral direction of the funnel and projecting in the axial direction a substantially equal distance are provided on the series of projections 5 and the depressions 10 formed therebetween.
  • Rims 8 and 9 should project between 0.15 and 0.25 mm. and preferably about 0.2 mm. These rims are in spaced relationship to each other and form therebetween a groove 6 of a depth between 0.15 and 0.25 mm. depending upon the projection distance of rims S and 9. Groove 6 should not be too wide since this might weaken the funnel. It is preferably about 1.0 mm. in width. In normal situations only one groove will be provided, however, for thicker funnels more than one may be used to provide a larger antifriction surface.
  • This funnel generally is constructed of glass or its equivalent. It may be fashioned so as to conform to this invention by the use of a mold.
  • the discharge end 4 should be heated and pressed into a mold whose molddischarge end 4 of funnel 1. The thread moves around,
  • the discharge end 4 is more uniform in its crosssection than the etched type because it can be made from a mold rather than by sand blasting. .Thus it is possible to obtain funnels thatare identical thus insuring a greater thread uniformity from package to package 'as well as within each package.
  • these funnels wear longer than the etched funnels because the etched surface wears easily when subjected to thread passage. Also, the thread passing over this end is not cut by .the rims as in the case of etched surfaces.
  • funnels should be provided with at least two rims in order that a liquid entraping groove will 'be obtained. It is possible to have more than two rims, however, it has been found that two rims will provide the necessary space for entraping the liquid and will entrap suflicient liquid to provide the antifrictional thread surface. C-rdinarily the funnels will be of such size that there will be only enough surface for two rims, however, if funnels with thicker walls are used, more than two may be used.
  • rims should be rounded off in order to prevent any damage to the thread sliding over their surfaces.
  • the space separating these rims should not he too great or the rims will be weakened. It has been found that such should be about 1 mm. in length.
  • the projec tions are preferably saw-toothed as shownin the drawing.
  • this invention with projections which are symmetrically shaped.
  • the downward sloping edges thereof are preferably in the same direction as the rotation of the spinning pot or centrifuge.
  • the number of projections should be from two to eight, however, more may be used.
  • a spinning funnel for use in the manufacture ofrayon according to'the centrifugal process comprising a hollow body portion, a mouth and a discharge end over which the thread is caused to ride, said discharge end having a series of projections and'depressionswhichjare provided with at leasttwo concentric annular rims, said rims extending in the peripheral direction of said funnel and projecting in the axial direction a substantially equal distance.
  • a spinning funnel for use in the manufacture of rayon according to the centrifugal process comprising a hollow body portion, a conical mouth and a discharge end, said discharge end having a series of projections and depressions provided with two concentric annular rims extending in the peripheral direction of. said funnel,
  • a spinning funnel according to claim 2 wherein said rims project a distance of 0.15 to 0.25 mm.
  • a spinning funnel for the manufacture of rayon according to the centrifugal process wherein said funnel is provided with a series of projections and depressions at its discharge end, the improvement comprising at least two concentric annular rims, said rims extending in the peripheral direction of said funnel and projecting in the axial direction a substantially equal distance.
  • a spinning funnel having a hard thread guiding surface provided with a series of projections and depressions, said projections and depressions having at least two concentric annular rims extending in the peripheral direction of said funnel, said rims projecting inthe axial direction between 0.15 and 0.25 mm. in order to efiect entrapment of liquid thereby providing an antifriction surface for the thread during the operation of the apparatus.
  • a spinning funnel for use in the manufacture of rayon according to the centrifugal process comprising a hollow body portion, a conical mouth and a discharge end, said discharge end having a series of projections and depressions provided with two concentric and spaced annular rims extending in the peripheral direction of said funnel and defining therebetween an annular groove for the entrapment of liquid thereby to form an antifriction thread surface, said rims projecting in the axial direction between 0.15 and 0.25 mm.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Centrifugal Separators (AREA)
  • Artificial Filaments (AREA)
US831093A 1958-09-02 1959-08-03 Spinning funnel Expired - Lifetime US2940243A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL874029X 1958-09-02

Publications (1)

Publication Number Publication Date
US2940243A true US2940243A (en) 1960-06-14

Family

ID=19851312

Family Applications (1)

Application Number Title Priority Date Filing Date
US831093A Expired - Lifetime US2940243A (en) 1958-09-02 1959-08-03 Spinning funnel

Country Status (4)

Country Link
US (1) US2940243A (enrdf_load_stackoverflow)
DE (1) DE1140311B (enrdf_load_stackoverflow)
GB (1) GB874029A (enrdf_load_stackoverflow)
NL (2) NL97100C (enrdf_load_stackoverflow)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3481128A (en) * 1966-08-24 1969-12-02 Schubert & Salzer Maschinen Apparatus for varying spinning characteristics of a rotary chamber spinning machine
US3805505A (en) * 1971-08-11 1974-04-23 Schubert & Salzer Maschinen Thread drawoff tube construction for open end spinning machines

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB434954A (en) * 1934-03-12 1935-09-12 Kirkless Ltd Improvements in funnels for use in centrifugal spinning machines for artificial silk
DE650767C (de) * 1935-10-31 1937-09-30 Algemeene Kunstzijde Unie N V Spinntrichter fuer Kunstseidetopfspinnmaschinen
US2177322A (en) * 1937-06-28 1939-10-24 American Enka Corp Device for use in the manufacture of artificial silk
BE491826A (enrdf_load_stackoverflow) * 1948-11-05
US2787883A (en) * 1952-12-19 1957-04-09 Gardella Adriano High speed spinning frames

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3481128A (en) * 1966-08-24 1969-12-02 Schubert & Salzer Maschinen Apparatus for varying spinning characteristics of a rotary chamber spinning machine
US3805505A (en) * 1971-08-11 1974-04-23 Schubert & Salzer Maschinen Thread drawoff tube construction for open end spinning machines

Also Published As

Publication number Publication date
NL97100C (enrdf_load_stackoverflow)
GB874029A (en) 1961-08-02
DE1140311B (de) 1962-11-29
NL231045A (enrdf_load_stackoverflow)

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