вход по аккаунту


Патент USA US2404742

код для вставки
July 23, 1946-
Filed Oct. 25, 1942
JmwJPo/al “M I
Ari/Earl. Jdaés'am
Patented July 23, 1946
James J. Polak and Arthur L. Jackson, "West Ashe
ville, N. C., assignors to American Enka Corpo
ration, Enka, N. 0., a‘. corporation of Delaware
Application October 23, 1942, Serial No. 463,125
6 Claims.
( CI. 57—66)
. : This invention relates to the manufacture of
rayon threadand the‘like. More particularly, the
invention relates to a method and apparatus for
spinning large packages of rayon thread which
are‘ highly permeable and, consequently, may be
easily andyquickly washed and‘ otherwise after
addition to the conventional spinning machinery,
in order to render the package ?uid permeable. ' _
The present invention is designed to e?ect sub
stantial economies in, both spinning and subse
quent handling, and has for its object the pro
duction of a large, highly permeable package’ of
continuous rayon thread.
_ ,According to conventional practice in the rayon
. ‘ Y
Another object ‘is the provision of a simpli?ed
industry, for example, in the manufacture of
method and apparatus for spinning rayon thread.
rayon by. ‘the viscose process, a viscose solution 10 ‘ A further object is the production of a loosely
is‘e‘xtruded‘ from a spinneret into an acid pre
cipitating bath to for-m?laments. Upon ‘with
drawal .irom the bath the formed thread is led
wound thread package which may be readily un
wound without tangling.
With these and, other objects in‘ view,.;t_he ‘in
to a collecting, device, such as a bobbin or a cen
_ vention contemplatesthe winding of rayon thread
trifugal pot. .Both bobbin spinning and pot spin 15 under substantially no tension, in a slowly ro
ning are. necessarily intermittent processes for
tating “can” which, in addition to revolving about
the manufacture of rayon thread, and since the
its own‘ axis, 'also'revolves about an axis spaced
spinning cycle must be“ interrupted each time a
full bobbin or cake is collected, it is obvious that
- The package thus wound consists of loose rings
a longer spinning period with the production of w built ‘up in layers torform a. package oflany de
larger. and heavier thread packages having great
sired dimensions, .dep‘ending‘upon the size of can
er lengths of, continuous thread wound thereon
selected and the package weight desired. With
would be accompanied by substantial savings in
the present method and apparatus, rayon pack
time and labor.
This saving, of course, would
ages-weighing ten pounds or more may be spun,
washedland aftertreated in the can in a‘ rela»
not be con?ned to the spinning process per se,
but would be carried over into subsequent han
dling operations where economies in time and
labor would be directly proportional to the size
of the package. ‘
tively short time.
' Advantages of this invention may be; more
"Rayon thread normally produced by conven
tionalmachinery is wound into a compact pack
tron with a conventional two-bath spinningsys
sage of liquids with which the thread is Washed
and treated. Inasmuch as impurities retained by
thejthread irom 'the spinning operation harm- .
fully “affectthe physical properties of the thread
if ‘left in contact therewith too long, and the ac
tion ‘of the washing liquid itself likewise endan
gers the quality of the thread, the size of the pack
mechanism for. driving the can shownv in Fig. 11-,
Fig. 3 shows thepattern of the packagelproe
, ‘
tion, and
n Fig. 5 shows still another pattern that maybe
produced by the present invention.
V . ‘
In Fig.‘ 1 is shown a conventional two-bath
spinning system for use in manufacturing-strong
yarn, and which is particularlyadaptedto the‘
production of heavy denier, strong yarn suchnas
may be employed in the production of cords for
ing time required, with the attendant danger of
reinforcing pneumatic‘tires and thelike. ,The
system‘comprises generally a trough pl divided
bya partition 2 to form a coagulating bathe-3 and,
treating bath ‘4. Spinning solution taken from a‘
building of packages of such large size has re
quired the utilization of ‘complex and expensive
‘pattern and tension-controlling mechanisms,‘ in
Fig. .4 shows a modi?ed form of package that
may be produced according to the present inven-.
been determined by the‘ time required‘for
injurin‘gtthe physicalproperties of the thread.
It has been‘ ‘found possible, in bobbin spinning,
to build a large package containing‘ many times
the'amount of thread in normal size packages
wound by conventional machinery. However, the
‘Fig. .2 is aperspective View in detail of‘ the’
ducedby the apparatus of Fig. 1,
‘treatment thereof, and the importance of thor
oughly washing the thread package as quickly as
possible is readily understood. Therefore, one of
the obstacles to the commercial production of
largerpackages of thread by well known meth
odsand apparatus has been the increased treat
Fig. ,1 is a perspective view of an apparatus
for carrying out the invention, shown in conjunc
age o?ering considerable resistance to the pas
readily apparent when considered in conjunction
with‘ the accompanying drawing wherein
source of supply, not shown, is. extrudedvfrom a;
spinneret? immersed in coagulating baths and
is withdrawn therefrom in the form' of a thread
6. .Thread. 6 is ‘withdrawn from bath‘ ,3‘ ata con—:
of being rotated continuously at a low speed, can
l4 may be operated intermittently, for a portion
of a revolution, upon the completion of each
stant rate of speed by a roller assembly compris
ing driven roller or godet ‘I and guide roller 8,
about which the thread is Wrapped a plurality of
times. From roller ‘I the thread is led about an ‘
idler roller 9 immersed in treating bath ll and
thence to afsecondroller assembly comprising a
driven godet I0 and guide roller ll, about which
the thread is wrapped a plurality of times.
revolution of the plate. This could be effected
by any suitable means such as a ratchet and
pawl or other. mechanism for periodically trip
ping gear I‘! and causing rotation thereof.
The package built up in can I4 is soft and
Preferably the temperature of the treating bath
highly permeable, and has the further advan
4 is above 60° C., and godet I0 is driven at a 10 tage that it may be readily unwound direct from
higher peripheral speed than roller 1 so that
the can without danger of tangling. Further,
the thread package may be washed and other
the thread may be subjected to a rather high
stretch there-between. Upon leaving godet lo
wise af'tertreated in the can in a very short time
the thread is led to, and wound a plurality of
without removal of the package, then dried and
turns around a third roller assembly comprising
godet l2 and guide I3, and thence is allowed to
fall by gravity into an open-top, cylindrical re
ceptacle or can I4. Although further tension
ing of the thread may take place between godet
,IOV and godet I2, the function of godet I2 is ,
primarily that of directing the thread into can
14, and for this reason is positioned directly
thereabove. Therefore, it is clear that godet l2
may, if desired, be eliminated and its position
taken by godet ID, or godet in may be dispensed
with and the thread lead directly from treating
transferred directly to other textile machines for
rewinding into forms suitable for use by fabric
manufacturers. Thus economies in operation are '
effected by the elimination of. a number of inter
mediate steps between spinning and winding into
a merchantable form ‘required in the normal
production of rayon by conventional machinery._
When employing the present invention in the
production of heavy denier thread for use in vre‘
. inforcing pneumatic tires, where it is required,
that the ?nal product possess a minimum elon
gation, a number of cans l4 carrying large, fresh
ly spun packages of thread which have been pre
bath 4 to godet l2. Can I4 is mounted for axial
rotation upon a shaft‘ (see Fig. 2) projecting
viously treated, with or without drying, are con-.
through an opening in a plate I6. On the lower
veyed to a slasher, through which the threads are
end of shaft I5 is mounted a gear wheel ll. 30 conducted, and wherein they may be stretched
and dried under tension prior to collection upon
Plate'l6 is af?xed to a shaft l3 for axial rota-v
tion therewith, and shaft [8-, in turn, is mounted
for rotation in bearing [9 supported by a stand
a beam. If desired, of course, the treatment of
the packages in the can may be dispensed with
ard 29,. Also affixed to shaft l8is a worm wheel
. and the cans conveyed directly from the spin
ning machine to the slasher. In such case the
threads, upon withdrawal from the cans, may
be led through treating baths prior to their re-i
c-eption ‘by the rollers of the slasher proper.
2| which engages a worm 22 mounted upon a
shaft 23' driven from any suitable source of pow
er, not shown. Loosely mounted upon shaft
I8, for independent rotation with respect there
to, is a worm wheel‘ 24, ‘connected by a sleeve 25
to agear wheel 25.
Worm wheel 24 meshes
with a worm 21, mounted upon a shaft 28 and
is driven through a reduction gearing, not shown,
The foregoing description is illustrative only,
and it should be understood that modi?cations
may be made in the invention without departing
fro-m the spirit thereof. Therefore, the invention
from the same source that drives shaft 23. ‘ The
should be limited only by the scope of the ap
motion of shaft 28 is communicated to shaft l5
and can M by a ‘gear wheel 29, engaging gears 45
pended claims.
What is claimed is:
1. An apparatus. for winding freshly spun vis
cose thread comprising a plate mounted for ro
Figs. 3, 4 and 5 are~illustrations of thread pat
tation about a pivot point, a cylindrical container
terns that may be formed in the collecting de
mounted upon said plate at a point spaced from
vice ‘by utilizing the mechanism shown in Figs. 50 said pivot point for rotation upon its own axis,
1 and 2, each thread ring being formed by rota
and two separate and independent means for
tion of plate l6 and the displacement of succes
rotating said plate and said container at dif
sive rings being effected by the rotation of can
ferent speeds.‘
l1 and 26 and a?ixed to a shaft 30 mounted in
plate l6.
[4 about its axis. Since only slight displacement
isv necessary to prevent the superimposition of
successive rings of thread, the ratio of the num
ber of revolutions of plate It to that of can [4
may be quite large, and successive rings are laid
2. An apparatus for winding freshly spun vis
cose thread comprising a plate mounted for ro
tation about a pivot point, a cylindrical con
tainer mounted upon said plate at a point spaced
from said .pivot'point for rotation upon its own
to form an annular series such as is shown in
axis, means for rotating said container, and
Figs. 2, 4 and 5.
rotated at about 16 R. P. M., can [4 may be re
separate means for rotating said plate at a higher l
rate of speed than said container.
volved at about 1/64 R. P. M. to produce pack
3. An apparatus for winding freshly spun vis-v
For example, if plate I6 is
ages such as are shown in the drawing. The size
cose thread comprising a plate mounted for ro
and’ position of‘ the thread rings may be varied
tation about a pivot'p'oint, a cylindrical con
by adjusting the position of shaft IS with re 65 tainer mounted upon saidplate at apoint-spaced. '
spect to the axis of plate It. For example, the
diameter of a single thread ring may be equal to
or less than the radius of the can, and the rings
laid between the center of the can and the wall
thereof'as in Figs. 3 and4; or the diameter of ”
from said pivot point for rotation upon its own
axis, means for directing a threadinto saidcon- .
tainer, means for rotating said cont_ainer,,,andmeans for rotating said plate at a rate ,of speed.
greater than 1:1 with respect to the rate of ro-t,
the thread ring may be greater than the radius
tation of said container so. that thethread is.
of the can so that the ring extends from the
wall of the canto a point beyond the center
laid in anannular series of overlapping rings,-v
each ring extending from a point adjacent
center of the container, to the periphery thereof.
4. An apparatus for winding freshly spun vis
thereof, in which case‘ each thread ring overlaps
the'other as shown'in Fig. 5. Likewise, instead
cose thread comprising a thread source, means
for causing said thread to fall by gravity from
a substantially ?xed point, a driven shaft, a
plate member mounted for axial rotation upon
tainer whereby the thread is deposited in suc
cessive layers, each layer comprising an annular
series of substantially circular commonly over
lapping rings.
said shaft, a cylindrical receptacle mounted for
6. In a method of manufacturing freshly spun,
axial rotation upon said plate at a point spaced
viscose rayon wherein a spinning solution is ex
from the center thereof, means for rotating said
truded into a precipitating medium to form ?la
plate and independent means for rotating said
mentous thread and the thread is withdrawn
receptacle at a considerably lower rate of speed
therefrom and passed to a point of collection,
than said plate whereby the thread is laid in an 10 the steps comprising, causing the thread to fall
annular series of overlapping rings, each ring
.by gravity from a substantially ?xed point into
extending from a point adjacent the center of
a container rotating about its own axis while in
the receptacle to the periphery thereof.
dependently rotating the container about an
5. In a method of manufacturing freshly spun,
axis spaced from the axis of the container, the
viscose rayon wherein a spinning solution is ex 15 R. P. M. of the plate being many times that of
truded into a precipitating medium to form ?la
the container whereby the thread is deposited in
mentous thread and the thread is withdrawn
successive layers, each layer comprising an an
therefrom and passed to a point of collection, the
steps comprising, causing the thread to fall by
nular series of substantially circular commonly
gravity into a container rotating about its own 20
axis while independently rotating the container
about an axis spaced from the axis of the con
overlapping rings,
Без категории
Размер файла
509 Кб
Пожаловаться на содержимое документа