US2633693A - Traverse mechanism for rayon spinning machines - Google Patents

Traverse mechanism for rayon spinning machines Download PDF

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Publication number
US2633693A
US2633693A US255388A US25538851A US2633693A US 2633693 A US2633693 A US 2633693A US 255388 A US255388 A US 255388A US 25538851 A US25538851 A US 25538851A US 2633693 A US2633693 A US 2633693A
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US
United States
Prior art keywords
box
cam
height
stroke
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
US255388A
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English (en)
Inventor
Bolton Henry Clement
Rose Leslie
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
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 Courtaulds PLC filed Critical Courtaulds PLC
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Publication of US2633693A publication Critical patent/US2633693A/en
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Classifications

    • 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 ; Non-rotary 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 to a traverse mechanism for rayon spinning machines in whichthe thread guide feeding the extruded filaments to a rotating spinning box is traversed through the action of a follower on a cam.
  • the curve of the cam is a so-called true cardiac curve (in fact a portion of a spiral of Archimedes combined with its mirror image), rounded at the tip and root for some 3.
  • the true cardiac curve gives a steady traverse for the thread guide and the rounding over an angle of some 3 is not sufiicient to interrupt in any material way the.
  • the height of the spinning box slightly greater than the stroke of the thread guide, for example, with a stroke of 4.49 inches the height of the box is normally 4.6 inches.
  • the term -height of the box means the distance from the bottom of the box to the under surface of the lid of the box and is substantially equal to the height of the cake collected in the box.
  • a rayon centrifugal spinning machine comprising a spin- 2 Glaims. (o1. 57-46) out excessive vibration in the machine.
  • the stroke of the thread guide may conveniently be made by raising the bottom of the funnel (the normal thread guide employed) from ing the thread guide axially of the spinning box is provided with the combination of a cam activating said cam follower, said cam being rounded ofi at the tip and the root over angles of at least 10 (preferably 15) whereby thestroke 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 in such degree that automatic spreading out of the accumulated filaments occurs and a cake having inside and outside surfaces substantially cylindrical and parallel is obtained.
  • the cam is preferably aheart-shaped cam, but a cylindrical or shell cam may also be used.
  • a cake having inside and outside surfaces which are substantially cylindrical and parallel can be obtained and hence a combination of this feature with the rounding 01f of the tip and root of the cam over at least 10 permits a substantial 'increase in the number of beats per minute withample, in an existing machine having a maximum permissible speed of about 32 beats per minute, the substitution of a cam rounded at the tip and the root over angles of 15 coupled with suitable adjustment of the height of the box relative to the stroke of the thread guide permitted speeds of the order of 48 beats per minute with satisfactory performance of the machine.
  • a thread guide for feeding filam cuts to the spmnin g boxahd a cam follower fortraversis correspondingly moved upwardly or downwardly, and providing the box with a lid having a recess of substantially increased depth.
  • the difference between the height of the box and the stroke of the thread guide is preferably varied according to the denier of the thread being spun, the higher the denier the greater the difference. This difference may be ascertained. by simple tests by varying the position of the bottom of the funnel and using lids of difierent thicknesses; the differenceshouldbe arranged equally at the top and the bottom of the stroke.
  • Figure 2 is a vertical section of a funnel, a. centrifugal spinning box and cover, the box height X compared with the dimension Y showing the adjustment of the height of the; box according to the invention,
  • Figure 3 is a diagrammatic view on a reduced scale of a double-sided spinning machine in accordance with; the invention comprising a rounded cam, a cam follower; a traverse bar and two funnels, and
  • Figures 4 and 5' show lids having recesses of different depths to give the necessary adjustment of the height of the box- X.
  • Figure 1 shows a cam I- which apart fromthe tip 2 and the root- 3- is a true cardiac curve.
  • the tip 2 and the root 3- are both rounded off over an angle a subtended at the centre 9 and is shown as about Chain lines 4 and 5 Show the normal tipand root respectivelyof" a true cardiac curve.
  • a reciprocatin funnel 6 is usedv to lay a thread T into a spinning centrifugal box 8 to form a cake- 9;
  • the funnel 6 has a stem part Hiand a cone-shaped part II which rests on a metal ring [2;- in the top of a bush i3; Bush'ltscrews: intoa support l4 which is reciprocated by means ofabar 15 which; in accordance with standard practice, is secured toafollower I? which runs in the grooveof the cam it Thefollower IT slides vertically on guides 18-.
  • Adjustment'of theposition of the funnel at the-bottom of the-stroke-is obtained by screwing the bush l3 upwardly or downwardly as the case'may be box 8 is provided with a circumferential lip l9 IS witha recess 26 of appreciable depthand a central hole 2i forpassage of" the funnel 3.
  • Other lids it having recesses 2-D and 20 of difierent thicknesses are illustratedin Figures- 4"andf 5?
  • Example 1 A viscose having a. cellulose. content. of 715 per. cent and av caustic,sodacontents-ofv 65 per cent and aged tota; saltfigure of 5.12 was extruded througha 3' et designed to ,iorm -a,.60 .denier. threadrinto a -coagulanti bath at. 45 centigrade. containing f9,5.,perscent of, sulphuricv-acid;
  • Example 2 Example 1 was repeated but in this case a jet designed to produce 75 denier thread was used, the height of the box was adjusted to 4.96 inches and the length of the traverse stroke was 4.49 inches. A; cake of substantially uniform thickness was obtained.
  • Example 3 Example 1 was repeated but in this case a jet designed to produce denier thread was used, the height of the box was adjusted to 5.62 inches and the length of the traverse stroke was 4.49 inches. A cake of substantially uniform thickness was obtained.
  • a rayon centrifugal spinning machine comprising a spinning box, a thread guide for feeding filaments tothe spinning box and a cam follower for traversing the thread guide axially of the spinning box, the combination of a cam activating said cam follower; said camhaving the shape of atrue cardiac curve; except forthe tip, and the root; said cam being rounded-oii at thetip and; root over angles of about 10 to about 15, 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 shorterthan the height" of the spinning box in such degree that automatic spreading out of the accumulated filaments occurs and a cake having inside" and outside surfaces substantially cylindrical and parallel is obtained.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
  • Artificial Filaments (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
US255388A 1947-10-31 1951-11-08 Traverse mechanism for rayon spinning machines Expired - Lifetime US2633693A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB29077/47A GB631857A (en) 1947-10-31 1947-10-31 Improvements in and relating to traverse mechanisms for rayon spinning machines

Publications (1)

Publication Number Publication Date
US2633693A true US2633693A (en) 1953-04-07

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ID=10285790

Family Applications (1)

Application Number Title Priority Date Filing Date
US255388A Expired - Lifetime US2633693A (en) 1947-10-31 1951-11-08 Traverse mechanism for rayon spinning machines

Country Status (6)

Country Link
US (1) US2633693A (fr)
BE (1) BE485557A (fr)
DE (1) DE868650C (fr)
FR (1) FR974440A (fr)
GB (1) GB631857A (fr)
NL (1) NL74601C (fr)

Cited By (2)

* 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
US3187496A (en) * 1961-11-24 1965-06-08 American Enka Corp Centrifugal yarn collection

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2647358A (en) * 1950-12-27 1953-08-04 Bolelli Aldo Centrifugal method for the wet spinning of natural fibers and apparatus for carrying out this method

Citations (3)

* 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
DE625277C (de) * 1932-05-05 1936-02-07 Carl Hamel Akt Ges Fadenfuehrerantrieb fuer Spinn- und Zwirnmaschinen, insbesondere fuer Kunstseidetopf- und Spulenspinnmaschinen
US2443231A (en) * 1947-01-17 1948-06-15 Celanese Corp Winding mechanism

Patent Citations (3)

* 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
DE625277C (de) * 1932-05-05 1936-02-07 Carl Hamel Akt Ges Fadenfuehrerantrieb fuer Spinn- und Zwirnmaschinen, insbesondere fuer Kunstseidetopf- und Spulenspinnmaschinen
US2443231A (en) * 1947-01-17 1948-06-15 Celanese Corp Winding mechanism

Cited By (2)

* 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
US3187496A (en) * 1961-11-24 1965-06-08 American Enka Corp Centrifugal yarn collection

Also Published As

Publication number Publication date
BE485557A (fr)
NL74601C (fr)
FR974440A (fr) 1951-02-22
DE868650C (de) 1953-02-26
GB631857A (en) 1949-11-10

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