US2633694A - Rayon spinning machine - Google Patents

Rayon spinning machine Download PDF

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Publication number
US2633694A
US2633694A US263568A US26356851A US2633694A US 2633694 A US2633694 A US 2633694A US 263568 A US263568 A US 263568A US 26356851 A US26356851 A US 26356851A US 2633694 A US2633694 A US 2633694A
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United States
Prior art keywords
cam
box
spinning
funnel
thread
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
US263568A
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English (en)
Inventor
Rose Leslie
Eric J Whyte
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.)
Akzo Nobel UK PLC
Original Assignee
Courtaulds PLC
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Filing date
Publication date
Application filed by Courtaulds PLC filed Critical Courtaulds PLC
Application granted granted Critical
Publication of US2633694A publication Critical patent/US2633694A/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H53/00—Cams or cam-followers, e.g. rollers for gearing mechanisms
    • F16H53/02—Single-track cams for single-revolution cycles; Camshafts with such cams
    • 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 torayon spinning machines and is particularly concerned with the traverse mechanism by which'the funnel feedin the extruded filaments into a rotating spinning box is traversed through the action of followers on a cam; This application is a continuation-inpart application of our application, SerialNo.
  • the cams employed in the present invention are preferably so rounded off that the modified cam surfaces follow an arc of a'circle in such a way that its tangents at the points where rounding begins are coincident with the tangents to the true cardiac curve; by so rounding off, the modified cam surfaces at the tip and the root to all intents and purposes follow the curve of a constant acceleration cam so that the cam used is in effect a combination of a constant velocity cam and a :constant acceleration cam, the .latter forming the tip and root of the composite cam, preferably over angles of the order of 22 to 30.
  • the tip of the cam is rounded off over an are -as'described above but the root of the cam ismade flat.
  • the difference between the height .ofz thenbox and the strok'eof the thread guide is preferably varied according to the denier of the thread :being. spun, the .higher the denier the greater the difference. This diiference maybe ascertained by simple :tests by varying-the posittion of the bottom of the funnel and using lids of different thicknesses.
  • Figure4 isa diagrammatic view on a reduced *sc'ale of a double-sided spinning machine 'in accordance with the invention comprising a r'ound- %ed-cam,-a cam follower, ;a traverse bar and-two funnels 'with undulating ends, and
  • box 8 is provided with a circumferential lip I8 ands. lid'l-l witharecess I9 of appreciable depth the thread I in the box 8, a stem part II and a cone-shaped part I2 which rests on a metal ring I3 in the top of of a bush I4.
  • Bush I4 screws into a support I5 which is reciprocated by a bar I5 which, in accordance with standard practice'issecured toa follower .23 which runs in the The follower i 23 slides vertically on guides 24. Adjustment of the position of the funnel at the bottom of the stroke is obtained by screwing the bush I4 upwardly or The spinning and a central hole 20 for passage of the funnel '6.
  • Example 1 fViscose containing 8 :per cent of cellulose and 6.5 per cent of caustic soda, aged to a salt point of 6z0,-wasextruded through a jet con'tainin'g 27 holes, each five thousandths of an inch in diameter, intoa co agulant bath "at 50 'c'e'ntigrade colltain'ing -1 0 per cent of sulphuric acid, 18 per cent of sodium sulphate a-nd *1 per-c'e'n-t of zinc si'ulpirate, to produce a denier "thread.
  • the thread-*sdformed was wahdrawmrom the bath a't asp'eed-of SB metres per minutes and was pa'ss'ed round "a gode't driven at such *a speed ""that the thread-was-stretched 25 per cent. From thegodet thethread-was passeda't aspeed-of 106i 25-metres per minute to a centrifugalfbo'x *8 rotating at 1,080 -revolutions per minute. The "thread wa's led into the box bymeans *ofia funnel 6 which had an undulating end Fa containing 8 undulations each of 2 mm.
  • Example 2 Viscose containing 8 per cent of cellulose and 6.5 per cent of caustic soda, aged to a salt point of 5.8, was extruded through a jet containing 27 holes, each five thousandths of an inch in diameter, into a coagulant bath at 60 centigrade containing 9.5 per cent of sulphuric acid, 20 per cent of sodium sulphate and 1.5 per cent of zinc sulphate, to produce a 150 denier thread. The thread so formed was withdrawn from the bath at a speed of 95 metres per minute and was passed round a godet driven at such a speed that the thread was stretched 25 per cent.
  • the godet the thread was passed at a speed of 118.75 metres per minute to a centrifugal box rotating at 7,000 revolutions per minute.
  • the thread was led into the box by means of a funnel 6 which had an undulating end containing 8 undulations each of 2 mm. depth and which was traversed through a cam-follower operated by a cam 25 having both its root and tip rounded ofi" over angles of 22 as shown in Figure 3.
  • the rate of reciprocation of the funnel B was 65 beats per minute.
  • the length of the traverse (Y) was 4.37 inches
  • the height of the box (X) was 4.71 inches
  • the funnel was set so that at the bottom of its stroke, the corrugated end It] was within 0.23 of an inch of the bottom of the box.
  • a rayon centrifugal spinning machine From I comprising a spinning box, a funnel for feeding filaments to the spinning box and a cam-follower for traversing the funnel axially of the spinning box, the combination of a funnel for feeding extruded filaments to said box and having its feeding edge indented, a cam activating said camfollower, said cam having the shape of a true cardiac curve except for the tip and the root, said cam being rounded ofi at the tip and root over angles of from about 14 to about 30, whereby the stroke of the guide has an appreciable dwell at each end and filaments are accumulated at the top and bottom of the box, and means for adjusting the height of the box with respect to the stroke of the cam so that the stroke of the guide is substantially shorter than the height of the spinning box; the shortened stroke of the guide and indentation of the funnel combining to cause automatic spreading out of the accumulated filaments and the formation of a cake having inside and outside surfaces substantially cylindrical and parallel.
  • cam is rounded off at the tip and root over angles of from about 22 to 30.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
  • Artificial Filaments (AREA)
US263568A 1948-11-05 1951-12-27 Rayon spinning machine Expired - Lifetime US2633694A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2633694X 1948-11-05

Publications (1)

Publication Number Publication Date
US2633694A true US2633694A (en) 1953-04-07

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US263568A Expired - Lifetime US2633694A (en) 1948-11-05 1951-12-27 Rayon spinning machine

Country Status (5)

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US (1) US2633694A (enrdf_load_stackoverflow)
BE (1) BE491826A (enrdf_load_stackoverflow)
DE (1) DE928121C (enrdf_load_stackoverflow)
FR (1) FR998935A (enrdf_load_stackoverflow)
NL (1) NL76086C (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2826036A (en) * 1954-07-06 1958-03-11 American Enka Corp Cam for pot spinning

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL231045A (enrdf_load_stackoverflow) * 1958-09-02

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1489199A (en) * 1922-05-02 1924-04-01 Dreaper William Porter Spinning and twisting of strands of artificial silk and other yarns or threads
US1663555A (en) * 1927-04-09 1928-03-27 Napon Rayon Corp Spinning pot
DE526642C (de) * 1926-11-10 1931-06-08 Siemens Schuckertwerke Akt Ges Einrichtung zum Durchleiten von Gespinstfaeden durch das Fadenfuehrerrohr von Topfspinnmaschinen
DE625277C (de) * 1932-05-05 1936-02-07 Carl Hamel Akt Ges Fadenfuehrerantrieb fuer Spinn- und Zwirnmaschinen, insbesondere fuer Kunstseidetopf- und Spulenspinnmaschinen
US2100595A (en) * 1935-10-31 1937-11-30 American Enka Corp Manufacture of artificial silk
US2177322A (en) * 1937-06-28 1939-10-24 American Enka Corp Device for use in the manufacture of artificial silk
US2443231A (en) * 1947-01-17 1948-06-15 Celanese Corp Winding mechanism

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1489199A (en) * 1922-05-02 1924-04-01 Dreaper William Porter Spinning and twisting of strands of artificial silk and other yarns or threads
DE526642C (de) * 1926-11-10 1931-06-08 Siemens Schuckertwerke Akt Ges Einrichtung zum Durchleiten von Gespinstfaeden durch das Fadenfuehrerrohr von Topfspinnmaschinen
US1663555A (en) * 1927-04-09 1928-03-27 Napon Rayon Corp Spinning pot
DE625277C (de) * 1932-05-05 1936-02-07 Carl Hamel Akt Ges Fadenfuehrerantrieb fuer Spinn- und Zwirnmaschinen, insbesondere fuer Kunstseidetopf- und Spulenspinnmaschinen
US2100595A (en) * 1935-10-31 1937-11-30 American Enka Corp Manufacture of artificial silk
US2177322A (en) * 1937-06-28 1939-10-24 American Enka Corp Device for use in the manufacture of artificial silk
US2443231A (en) * 1947-01-17 1948-06-15 Celanese Corp Winding mechanism

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2826036A (en) * 1954-07-06 1958-03-11 American Enka Corp Cam for pot spinning

Also Published As

Publication number Publication date
NL76086C (enrdf_load_stackoverflow)
DE928121C (de) 1955-06-06
FR998935A (fr) 1952-01-24
BE491826A (enrdf_load_stackoverflow)

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