US2633693A - Traverse mechanism for rayon spinning machines - Google Patents
Traverse mechanism for rayon spinning machines Download PDFInfo
- 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
- Authority
- 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
Links
- 238000009987 spinning Methods 0.000 title description 23
- 229920000297 Rayon Polymers 0.000 title description 8
- 239000002964 rayon Substances 0.000 title description 7
- 230000000747 cardiac effect Effects 0.000 description 5
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 2
- 230000003213 activating effect Effects 0.000 description 2
- 101100379080 Emericella variicolor andB gene Proteins 0.000 description 1
- 241000220317 Rosa Species 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000003518 caustics Substances 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 238000004043 dyeing Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 229910052938 sodium sulfate Inorganic materials 0.000 description 1
- 235000011152 sodium sulphate Nutrition 0.000 description 1
- 230000002311 subsequent effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- NWONKYPBYAMBJT-UHFFFAOYSA-L zinc sulfate Chemical compound [Zn+2].[O-]S([O-])(=O)=O NWONKYPBYAMBJT-UHFFFAOYSA-L 0.000 description 1
- 235000009529 zinc sulphate Nutrition 0.000 description 1
- 239000011686 zinc sulphate Substances 0.000 description 1
Images
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.
Landscapes
- 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)
Description
APrll 1953 H. c. BOLTON ET AL 2,633,693
TRAVERSE MECHANISM FOR RAYON SPINNING MACHINES I Filed Nov. 8, 1951 2 SHEETS-SHEET 1 /n venfars Henry C/emenf 50/10/7 Les/n9 Rose By their affameys April 1953 H. c. BOLTON ET AL 2,633,693
TRAVERSE MECHANISM FOR RAYON SPINNING MACHINES Filed Nov. 8, 1951 2 SHEETSSHEET 2 F IG. 3.
F IG. 5.
//7 ven/ors Henry C/emen/ 50/f0/7 Les/A9 /-?056 By Meir attorneys Patented Apr. 7, 1953 TRAVERSE MECHANISM FOR RAYON SPINNING MACHINES Henry Clement Bolton, Kidderminster, and Leslie Rose, Whitefield, near Manchester, England, assignors to Courtaulds Limited, London, England, a British company Application November 8, 1951, Serial No. 255,388
In Great Britain October 31, 1947 1 I 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. This application is a continuation in part application of our application Serial No. 54,626 filed October 15th, 1948, now abandoned.
In accordance with conventional practice 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.
steady traversing action so that a cake with substantially cylindrical and parallel surfaces is obtained. In practice it is usual to make 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. In this specification 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. With existing apparatus it has now been found that there is a maximum permissible speed at about 32 beats perminute and above this speed there is excessive vibration of the thread guides which results in faulty cakes. One cause is the fact that the acceleration given to the cam-follower at speeds above 32 beats per minute exceeds the acceleration due to gravity (g) at the tip and at the root of the cam. In standard pot spinning machines, two banks of funnels are reciprocated by two cams arranged at the ends of the banks; each cam has a follower, and the two followers are arranged on a traverse bar 22 (in Fig. 3 of this application). In practice one cam will wear more than the other, so that one cam follower will not in practice completely follow the contour of its cam, but will bev influenced by the other follower to leave the surface of the cam and crashes back on to it after a short aerial path. The shock is transmitted to the traverse rail which thus vibrates with its own natural frequency. 4 Y H e j It is the object of the present invention to provide traverse mechanism for a rayon spinning machine which will permit of higher speeds than heretofore.
According to the present invention a rayon centrifugal spinning machine comprising a spin- 2 Glaims. (o1. 57-46) out excessive vibration in the machine. For extive to 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.
The effect of rounding oil the tip and the root of the cam over at least 10 without simultaneous adjustment of the height of the spinning box relative to the stroke of the thread guide would be to produce a cake substantially thicker at the top and the base than at the centre with sub sequent difficulties in washing and treating which would be shown in the quality, for example dyeing affinity, of the yarn taken from the various parts of the cake. It has been found, however,
that by sufficiently increasing the height of the box relative to the stroke of the thread guide.
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.
The adjustment of the height of the box relathe floor of the box to the required extent for example by holding the f unnel in a ring held by a screwed bush which can be screwed upwardly j or downwardly so that the bottom of the funnel 55. I ning box, 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. Thus with a s'eriesof lids each'with a different depth below the recess, provision may beinade so that and a lid difierent types of cakes can be collected with a single box. 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.
The invention is illustrated byway of example in the accompanying diagrammatic drawings in which Figure 1 is a plan viewzof one form of, cam suitable for use in the present invention,
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.
Referring to Figures 2 and 3, 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. In accordance with the presentinvention the height of the box (X) i-s-made longer than the length (Y) of the traverse stroke of the funnel 6 so that thethreadl whenformed into the cake 9, automatically spreads out to form a cake having substantially cylindricaland parallel inside-and outside surfaces; Other lids it having recesses 2-D and 20 of difierent thicknesses are illustratedinFigures- 4"andf 5? The inventionisillustrated by the following examples in which a camhaving its-tipand-root: rounded off over an-angle of about: 15as-sli0wn in Figure 1 was used with a spinnin'g-box-= assembly as shownin FiguresZ andB; Percentagesam by weight. a
' 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;
The spinning I 20 per cent of sodium sulphate and 1 per cent of zinc sulphate. From the bath the thread was passed over a godet and was then collected in a centrifugal box at a speed of metres per minute, corresponding to about 45 beats per minute. The height of the box, corresponding to X in the drawing, was 4.90 inches and the length of the traverse stroke, corresponding to Y wasv 4.49 inches. In order that cake should be uniform, the stroke of the funnel ended at a distance of .205 inch from the top and bottom of the box. A cake of substantially uniform thickness was obtained.
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.
What we claim is:
1. In 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.
21 In a rayon centrifugal spinning machine according to-claim 1, the provision asthe/means for adjusting. the height of thebox with respect to the stroke of the thread guide, of a-vertically adjustable support for the guide and aremovu able cover for thebox each adapted to provide cylindricaland' parallel cake surfaces; are obtained HEN-RY CLEMENT BOLTONI LESLIE ROSE.
REFERENCES CITED The: following references are-off record in". the
V UNITED STATES PATENTS Number
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 |
Family
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 (en) |
BE (1) | BE485557A (en) |
DE (1) | DE868650C (en) |
FR (1) | FR974440A (en) |
GB (1) | GB631857A (en) |
NL (1) | NL74601C (en) |
Cited By (2)
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)
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)
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 (en) * | 1932-05-05 | 1936-02-07 | Carl Hamel Akt Ges | Thread guide drive for spinning and twisting machines, especially for rayon pot and bobbin spinning machines |
US2443231A (en) * | 1947-01-17 | 1948-06-15 | Celanese Corp | Winding mechanism |
-
0
- NL NL74601D patent/NL74601C/xx active
- BE BE485557D patent/BE485557A/xx unknown
-
1947
- 1947-10-31 GB GB29077/47A patent/GB631857A/en not_active Expired
-
1948
- 1948-10-29 FR FR974440D patent/FR974440A/en not_active Expired
- 1948-12-31 DE DEP28684A patent/DE868650C/en not_active Expired
-
1951
- 1951-11-08 US US255388A patent/US2633693A/en not_active Expired - Lifetime
Patent Citations (3)
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 (en) * | 1932-05-05 | 1936-02-07 | Carl Hamel Akt Ges | Thread guide drive for spinning and twisting machines, especially for rayon pot and bobbin spinning machines |
US2443231A (en) * | 1947-01-17 | 1948-06-15 | Celanese Corp | Winding mechanism |
Cited By (2)
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 (en) | |
NL74601C (en) | |
FR974440A (en) | 1951-02-22 |
DE868650C (en) | 1953-02-26 |
GB631857A (en) | 1949-11-10 |
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