U.S. patent application number 14/234066 was filed with the patent office on 2014-09-04 for melt spinning device.
The applicant listed for this patent is Oerlikon Textile GmbH & Co. KG. Invention is credited to Roland Oesterwind, Elmar Osthues.
Application Number | 20140248384 14/234066 |
Document ID | / |
Family ID | 46516720 |
Filed Date | 2014-09-04 |
United States Patent
Application |
20140248384 |
Kind Code |
A1 |
Oesterwind; Roland ; et
al. |
September 4, 2014 |
MELT SPINNING DEVICE
Abstract
A melt spinning device produces a plurality of multi-filament
threads which includes a spinning apparatus, a cooling apparatus, a
drawing apparatus and a winding apparatus. The drawing apparatus
has a plurality of godet units entwined by threads, each of said
units having a plurality of godets, which are axially rectified to
a coil spindle of the winding device. The transition of the threads
as yarn from the drawing device to the winding device is executed
by a guide godet which is aligned axially crosswise to the godets
of the godet units and under the drawing device, so that the
threads can be guided by simple partial wrapping after rotation of
the thread running plane of the yarn by 90.degree..
Inventors: |
Oesterwind; Roland;
(Remscheid, DE) ; Osthues; Elmar; (Werne,
DE) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
Oerlikon Textile GmbH & Co. KG |
Remscheid |
|
DE |
|
|
Family ID: |
46516720 |
Appl. No.: |
14/234066 |
Filed: |
July 10, 2012 |
PCT Filed: |
July 10, 2012 |
PCT NO: |
PCT/EP2012/063460 |
371 Date: |
May 20, 2014 |
Current U.S.
Class: |
425/6 |
Current CPC
Class: |
B65H 2701/3132 20130101;
D01D 13/02 20130101; B65H 51/12 20130101; D01D 13/00 20130101; B65H
54/20 20130101 |
Class at
Publication: |
425/6 |
International
Class: |
D01D 13/00 20060101
D01D013/00 |
Foreign Application Data
Date |
Code |
Application Number |
Jul 26, 2011 |
DE |
10 2011 108 534.7 |
Claims
1. Melt spinning apparatus for the production of multiple
multifilament yarns, comprising: a spinning device including
multiple spinnerets for extrusion of the yarns, disposed in a row,
a cooling device, a drawing device including at least multiple
godet units having multiple godets, around which the yarns are
looped, a windup device including multiple winding locations
parallel to a spool spindle, and at least one guide godet which is
disposed between the drawing device and the windup device, wherein
the godets of the godet units and the spool spindle of the windup
device are axially oriented in the same direction, and wherein the
guide godet is oriented transverse to the godets of the godet unit,
underneath the drawing device, in such a manner that during a
transition, the yarns can be guided on the guide godet after a
rotation of the yarn run plane of the yarn web by 90.degree., with
a single partial loop.
2. Melt spinning apparatus according to claim 1, wherein the guide
godet is disposed above the spool spindle, on the side, next to the
winding locations.
3. Melt spinning apparatus according to claim 1, wherein the guide
godet has a second guide godet, oriented in the same way, assigned
to it, above the spool spindle, which is disposed on the side, next
to the winding locations.
4. Melt spinning apparatus according to claim 3, wherein a swirling
device is disposed between the two guide godets.
5. Melt spinning apparatus according to claim 1, wherein the windup
device is formed by two spool-up apparatuses disposed next to one
another, each having multiple winding locations, and that the guide
godet is disposed in the center, above the spool-up
apparatuses.
6. Melt spinning apparatus according to claim 1, wherein multiple
deflection rolls that are disposed directly ahead of a changing
device, in each instance, in the winding locations, are provided
between the guide godet and the winding locations.
7. Melt spinning apparatus according to claim 1, wherein a guide
means that brings about a change in the yarn run plane of the yarn
web about an angle in the range of 90.degree. is provided between
the guide godet and the last godet of the drawing device.
8. Melt spinning apparatus according to claim 1, wherein the
spinnerets are configured as a double spinneret, in each instance,
by means of which two multifilament yarns can be extruded per
double spinneret.
9. Melt spinning apparatus according to claim 8, wherein the row of
spinnerets is oriented transverse to the axes of the godet units of
the drawing device and that at least one guide means is provided
between the spinnerets and the drawing device, by means of which a
change in the yarn run plane of the yarn web by an angle in the
range of 90.degree. is brought about.
10. Melt spinning apparatus according to claim 1, wherein the
cooling device has multiple cooling cylinders having a
gas-permeable cylinder wall, which cylinders are held within a
blowing chamber.
11. Melt spinning apparatus according to claim 10, wherein each of
the spinnerets has a respective cooling cylinder, and wherein the
cooling cylinders are divided into two separate cooling zones.
Description
[0001] The invention relates to a melt spinning apparatus for the
production of multiple multifilament yarns in accordance with the
preamble of claim 1.
[0002] A melt spinning device of the stated type is known from WO
2004/074155.
[0003] For the production of synthetic yarns, such melt spinning
apparatuses are combined in a multiple number, to form a complete
spinning facility in a machine hall. In this connection, a high
level of space utilization is desired. The greater the number of
installed melt spinning apparatuses, the higher the production
output of the spinning facility. Aside from the machine pitches of
the melt spinning apparatuses, productivity is determined, to a
significant extent, by the number of yarns that can be produced per
melt spinning apparatus. In this regard, there is a desire to
configure melt spinning apparatuses as compact as possible, with
the greatest possible number of yarns.
[0004] In the case of a melt spinning apparatus of the stated type,
a spinning device, a cooling device, a drawing device and a windup
device are disposed one below the other, to produce a vertical yarn
run. Because the spinning device with the spinnerets, the treatment
device with the godet units, and the windup device with the winding
locations require different distances, in each instance, between
the yarns that are conducted in parallel, spreading the yarns apart
or bringing them together is unavoidable. Within the yarn web,
however, the aim is always to ensure that each of the multifilament
yarns produced in the melt spinning apparatus has essentially the
same properties. For this reason, deflections and spreads that lead
to different yarn tensions in the multifilament yarns should be
avoided, if at all possible. In the case of the melt spinning
device of the stated type, a deflection device as well as a
vertically oriented guide roller are therefore used in the transfer
of the yarns from the treatment device to the winding locations of
the windup device, in order to obtain the most compact yarn
guidance possible, by means of multiple deflections. Such yarn
guides, however, also lead to undesirable yarn tensions building
up. Deflection on stationary deflection means, in particular,
causes increased yarn friction.
[0005] From WO 2004/015137 A1, a further melt spinning apparatus is
known, in which the godets of the treatment device are oriented to
lie transverse to a spool spindle of the windup device, for pulling
the yarns off and drawing them, in order to configure the windup
device and the treatment device as compact as possible. In this
connection, however, godets around which the yarn passes only once
are preferred in the drawing device, on order to remain within the
machine pitch defined by the windup device. In the case of godets
that project a long distance, on which the yarn web is guided with
multiple encircling loops, the godets can therefore hardly be
combined with the windup device to form a structural unit. For the
production of fully drawn yarns with greater yarn titers, however,
godets around with the yarns are looped multiple times are
absolutely necessary for yarn guidance and to build up the drawing
forces.
[0006] It is now the task of the invention to further develop the
melt spinning apparatus of the type mentioned initially in such a
manner that the yarns drawn on godet units around which they are
looped multiple times can be passed to the winding locations in a
manner that is as gentle as possible on the yarns, without
spreading.
[0007] A further goal of the invention lies in making available a
melt spinning apparatus of the stated type with which fully drawn
yarns (FDY) can be produced parallel, next to one another, in the
greatest possible number.
[0008] This task is accomplished, according to the invention, in
that the guide godet is oriented axially transverse to the godets
of the godet unit, underneath the drawing device, in such a manner
that during the transition, the yarns can be guided on the guide
godet with a single partial loop around it, after rotation of the
yarn run plane of the yarn web by 90.degree..
[0009] Advantageous further developments of the invention are
defined by the characteristics and combinations of characteristics
of the dependent claims.
[0010] The invention is characterized in that the components that
significantly influence the depth of the melt spinning apparatus
are directed in the same direction, so that a machine depth
essentially predetermined by the winding device is utilized to
place the godet units of the drawing device. The yarn web can be
passed directly to the guide godet that is oriented transverse to
the godets of the godet unit the drawing device, by means of a
rotation of the yarn run plane of the yarn web, without any
deflection and spreading. Rotation of the yarn web takes place, out
of the yarn run plane determined by the drawing device, by an angle
in the range of 90.degree., into a new yarn run plane defined by
the guide godet. Here, the yarn run plane is understood to be the
plane spanned by the yarns that are guided parallel next to one
another. In this way, spreading of the yarn web for distribution of
the yarns onto the winding locations is minimized. The required
deflection can be implemented solely by means of rotating
deflection means such as the guide godet.
[0011] In a first further development of the invention, feed of the
drawn yarns to the winding locations of the spool-up machine can be
performed with a single partial loop of the yarn web on the guide
godet. For this purpose, the guide godet is disposed above the
spool spindle, on the side, next to the winding locations, so that
after the yarns run off the guide godet, they can be distributed
onto the individual winding locations.
[0012] Alternatively, however, the possibility exists of assigning
a second guide godet, directed in the same direction, to the guide
godet above the spool spindle, which second godet is disposed on
the side, next to the winding locations. In this way, a winding
tension for winding the yarns up in the winding locations can be
influenced, particularly by means of the drive of the guide
godets.
[0013] Furthermore, the possibility exists of utilizing the guide
segment formed between the guide godets for further treatment of
the yarns. Thus, it is provided, according to a further development
of the invention, that a swirling device is disposed between the
two guide godets.
[0014] In order to be able to produce a plurality of yarns at the
same time, the further development of the invention in which the
windup device is formed by two spool-up apparatuses disposed next
to one another, which each have multiple winding locations, has
proven itself. For this purpose, the guide godet is preferably held
in the center, above the spool-up apparatuses. In this way, the
depth of the windup device, in particular, can be kept low at a
large number of yarns. For improved yarn guidance, the spool-up
apparatuses are preferably structured with mirror symmetry relative
to one another, so that the distribution of the yarn web after
running off the guide godet can take place from a plane of
symmetry.
[0015] The distribution and feed of the yarns to the winding
locations preferably takes place according to the further
development of the invention in which multiple deflection rolls
that are disposed directly ahead of a changing device, in each
instance, in the winding locations, are provided between the guide
godet and the winding locations. In this way, the yarns can be
passed to the winding locations with low yarn friction.
[0016] For yarn stability in the guidance of the yarns as a yarn
web, the melt spinning apparatus according to the invention can be
further improved in that a guide means that brings about a change
in the yarn run plane of the yarn web about an angle in the range
of 90.degree. is provided between the guide godet and the last
godet of the drawing device. In this way, the run of the yarn web
off the last godet of the drawing device and the run of the yarns
of the yarn web onto the guide godet can be significantly
stabilized.
[0017] In order to be able to obtain the greatest possible number
of yarns within the machine pitch caused by the spinnerets, the
further development of the invention in which the spinnerets are
structured as a double spinneret, in each instance, is particularly
preferred, by means of which two multifilament yarns can be
extruded per spinneret. In this way, a great number of yarns can be
produced within the spinning device, at a very compact arrangement
of the spinnerets in parallel. Thus, the possibility exists that
the row of spinnerets are oriented transverse to the axes of the
godet units of the drawing device and form a machine operation
side, together with the free ends of the godet units and the free
end of the spool spindle of the windup device. To stabilize the
yarn runs, a guide means is provided between the spinnerets and the
drawing device, by means of which a change in the yarn run plane by
an angle in the range of 90.degree. is brought about.
[0018] In order to be able to cool each of the individually
extruded multifilament yarns uniformly in spite of the compact
construction of the spinning device, the further development in
which the cooling device has multiple cooling cylinders each having
a gas-permeable cylinder wall, which cylinders are disposed within
a blowing chamber, is particularly advantageous. In this way, each
of the yarns of the yarn web can be cooled under essentially the
same conditions.
[0019] In the configuration of the spinnerets as a double
spinneret, the further development in which each of the spinnerets
has a cooling cylinder assigned to it, where the cooling cylinders
are divided into two separate cooling zones, is particularly
preferably used. In this way, multiple yarns can be extruded and
cooled at the same time per spinneret and cooling cylinder.
[0020] The melt spinning apparatus according to the invention is
particularly suitable for producing fully drawn yarns (FDY).
[0021] In the following, the invention will be described in greater
detail using some exemplary embodiments of the melt spinning
apparatus.
[0022] The figures show:
[0023] FIG. 1 schematically, a side view of a first exemplary
embodiment of the melt spinning apparatus according to the
invention, FIG. 2 schematically, a front view of the exemplary
embodiment from FIG. 1, FIG. 3 schematically, a side view of a
further exemplary embodiment of the melt spinning apparatus
according to the invention,
[0024] FIG. 4 schematically, a front view of a further exemplary
embodiment of the melt spinning apparatus according to the
invention.
[0025] In FIGS. 1 and 2, a first exemplary embodiment of the melt
spinning apparatus according to the invention is shown
schematically in multiple views. FIG. 1 shows the exemplary
embodiment in a side view, and in FIG. 2, the exemplary embodiment
is shown in a front view. Unless an explicit reference is made to
one of the figures, the following description applies to both
figures.
[0026] The exemplary embodiment has a spinning device 1, a cooling
device 3, a drawing device 4, and a windup device 22, which are
disposed one underneath the other, in order to obtain a yarn run
that is essentially directed vertically.
[0027] The spinning device 1 has a spinning bar 9 that carries
multiple spinnerets 2 on its underside.
[0028] As is evident from the representation in FIG. 2, two
spinnerets 2 are held on the spinning bar, which are configured,
respectively, as a double spinneret 8.1 and 8.2. Each of the double
spinnerets 8.1 and 8.2 held on the spinning bar 9 is coupled, in
each instance, with a multiple pump 6, by way of separate melt
lines. The multiple pump 6 is preferably configured as a planetary
gear pump, where two separate sets of planetary gears are assigned
to each double spinneret 8.1 and 8.2. The multiple pump 6 is driven
by way of a pump drive 7. In this connection, feed of a polymer
melt takes place by means of a melt intake 5 that is coupled with
the multiple pump 6.
[0029] The cooling device 3 is provided underneath the spinning
device 1; it has a blowing chamber 10 that is connected with an air
conditioning device, not shown here. Multiple cooling cylinders
11.1 and 11.2 that are assigned to the spinnerets 2 are disposed
within the blowing chamber 10. The cooling cylinders 11.1 and 11.2
each have a gas-permeable cylinder wall, so that a cooling medium
introduced into the blowing chamber 10 penetrates uniformly into
the interior of the cooling cylinders 11.1 and 11.2.
[0030] As is particularly evident from the representation in FIG.
2, each of the cooling cylinders 11.1 and 11.2 has a partition wall
12 in the central region, by means of which two separate cooling
zones are formed in the cooling cylinder 11.1 and 11.2. Thus, a
filament bundle extruded by one of the double spinnerets 8.1 and
8.2 can be introduced into each of the cooling zones.
[0031] The configuration of the blowing chamber 10 and of the
cooling cylinders 11.1 and 11.2 is shown as an example.
Fundamentally, the possibility also exists of forming the blowing
chamber 10 by means of an upper and a lower chamber, which are
connected with one another by way of a perforated metal sheet. In
this connection, a cooling cylinder penetrates through both
chambers of the blowing chamber; this cylinder has a gas-permeable
wall in the upper chamber and a closed wall in the lower chamber.
The connection with the air conditioning device then takes place by
way of the lower chamber of the blowing chamber.
[0032] Alternatively, however, the possibility also exists of
forming the cooling cylinders 11.1 and 11.2 by means of a blowing
wall oriented transverse to the spinnerets 2, so that a cooling air
stream that is directed transversely can be produced.
[0033] As is evident from the representations in FIG. 1 and FIG. 2,
the cooling cylinders 11.1 and 11.2 open into a cooling shaft 13,
in which the yarns are guided for cooling.
[0034] Because each of the extruded multifilament yarns is formed
by a plurality of filament strands, bringing together the filaments
per yarn takes place at the outlet of the cooling device 3. For
this purpose, multiple collecting yarn guides 14 and a preparation
device 15 are provided. In this exemplary embodiment, the
preparation device 15 is shown as a roller preparation, as an
example. Fundamentally, however, pin preparations can also be used
in this connection.
[0035] For pulling off and drawing the extruded yarns as a yarn
web, the drawing device 4 follows the cooling device 3. In this
exemplary embodiment, the drawing device 4 has two godet units 16.1
and 16.2. The godet units 16.1 and 16.2 are configured identically
and consist, in this exemplary embodiment, of a driven godet 17 and
a companion roll 18 that is mounted so as to rotate. The godet 17
is driven by a godet drive 31. The yarns are guided on the godet
units 16.1 and 16.2 as a yarn web 33, with multiple loops around
them. In this connection, a differential speed is set between the
godets 17 of the godet units 16.1 and 16.2, in order to draw the
yarns of the yarn web 33.
[0036] In the transition from the cooling device 3 to the drawing
device 4, a first rotation of the yarn run plane by 90.degree. is
required, because the yarn run plane spanned by the spinnerets runs
offset relative to the yarn run plane formed by the godet units
16.1 and 16.2. In this connection, the plane in which the yarns of
the yarn web 33 are guided next to one another is referred to as
the yarn run plane.
[0037] To transfer the yarn web, a guide means 19, by which the
yarn web is rotated and, at the same time, the yarns are brought
together at a treatment distance from one another, is provided
between the preparation device 15 and the first godet 17 of the
godet unit 16.1 of the drawing device 4.
[0038] As is evident from the two representations of the first
exemplary embodiment, a guide godet 20.1 follows the drawing device
4. The guide godet 20.1 follows the last godet 17 of the godet unit
16.2, in order to pull the yarn web 33 off the godet unit 16.2. For
this purpose, the guide godet 20.1 is oriented axially transverse
to the godet 17 of the godet unit 16.2, so that during the
transition, the yarns can be guided on the guide godet with a
single partial loop, by means of a rotation of the yarn run plane
by 90.degree..
[0039] The guide godet 20.1 is held on a godet support 34 that
supports itself on a machine frame 30 of the windup device 22. A
godet drive 31 assigned to the guide godet 20.1 is held on the
opposite side of the godet support 34.
[0040] As is evident from the representation in FIG. 1, the guide
godet 20.1 has a second guide godet 20.2 assigned to it, which is
disposed on the godet support 34, on the side, next to multiple
winding locations 23.1 to 23.4 of the windup device 22. A swirling
device 21 is provided between the guide godets 20.1 and 20.2; the
yarns of the yarn web 33 can be treated separately from one another
by means of this device.
[0041] The windup device 22 has multiple winding locations 23.1 to
23.4, in which the yarns of the yarn web 33 are wound up to form a
spool 26, in each instance. The winding locations 23.1 to 23.4 are
configured identically and each have a deflection roll 27 and a
changing unit 28. In this connection, the spools 23 are
simultaneously wound on a spool spindle 24.1 or 24.2, which are
held projecting out of a spool turret 25 and are alternately guided
into an operational region and a changing region. To place the
yarns of the yarn web 33 onto the respective spools 26, a
press-down roller 29 is provided, which lies against the
circumference of the spools 26. The spool turret 25 and the
press-down roller 29 are held in the machine frame 30 in movable
manner.
[0042] The drives of the windup device 22 are not shown here,
because such windup devices, also referred to as spool turrets in
the industry, are sufficiently known. In this connection, the godet
drives 31 of the guide godet 20.1 and 20.2, which are jointly
supplied with electricity and jointly controlled, advantageously
form a control unit.
[0043] In the exemplary embodiment shown in FIGS. 1 and 2, the yarn
run of the yarn web 33 is shown in the drawing for an explanation
of the method of functioning. In this connection, a plurality of
fine filament strands is extruded by the two double spinnerets 8.1
and 8.2, from a polymer melt; these strands, after cooling, are
brought together to produce a total of four multifilament yarns, by
means of bringing them together and preparing them. Fundamentally,
the possibility exists that in addition to preparation,
pre-swirling of the filaments also takes place, in order to produce
yarn consolidation that is required for treatment of the yarns.
[0044] Subsequently, the yarn web 33 formed by the four yarns is
drawn off the spinnerets 2 by means of the first godet 17 of the
godet unit 16.1, where the yarn web 33 is transferred from a first
yarn run plane that is spanned through the row of the spinnerets 2
to a yarn run plane that is offset by 90.degree.. The second yarn
run plane is determined by the axial orientation of the godets 17
of the godet units 16.1 and 16.2, transverse to the row of the
spinnerets 2.
[0045] In the drawing device 4, the yarn web 33 is drawn by means
of differential speeds of the godet units 16.1 and 16.2. In this
connection, the godets 17 of the godet units 16.1 and 16.2 are
advantageously structured in heated manner.
[0046] At this point, it should be explicitly mentioned that the
configuration of the godet units 16.1 and 1.62 is only an example.
Fundamentally, the godet units 16.1 and 16.2 can alternatively also
be formed by two driven godets that have heated guide mantles.
Furthermore, multiple godet units could also be used, which
optionally consist of godets having a companion roll, or of
multiple godets, or of individual godets.
[0047] After drawing of the yarn web 33, the yarn web 33 is pulled
off by means of the guide godet 20.1 that follows the drawing
device 4. In this connection, the yarn web is guided out of the
yarn run plane spanned for treatment and transferred to a guide
plane rotated by 90.degree., which is determined by the axial
orientation of the guide godet 20.1, where the guide godet 20.1 is
oriented essentially transverse to the godets 17 of the godet units
16.1 and 16.2. The yarn segment between the godet unit 16.2 and the
guide godet 20.1 can advantageously be utilized for shrink
treatment, where the guide godet 20.1 is driven independent of the
guide unit 16.2. Furthermore, the possibility exists that the guide
godet 20.1 is structured to be heated.
[0048] For further treatment, the yarn web 33 is passed to the
swirling device 21, which is held between the guide godets 20.1 and
20.2. In this connection, advantageous yarn tensions for swirling
the yarns of the yarn web 33 can be adjusted by means of different
circumference speeds of the guide godets 20.1 and 20.2. For this
purpose, the guide godet 20.2 is driven by a godet drive 31, so
that furthermore, an independent windup tension can be produced on
the yarns of the yarn web.
[0049] At the end, the yarns of the yarn web 33 are distributed
onto the individual winding locations 23.1 and 23.4 and wound up to
form a spool 26, in each instance. Because of the equal treatment
by means of multiple gentle deflections by means of rotating
deflection means, each yarn of the yarn web 33 has essentially the
same characteristics, so that the spools can be produced with
essentially identical windup tensions.
[0050] The number of yarns that are extruded, drawn, and wound up
at the same time, as selected in the exemplary embodiment according
to FIGS. 1 and 2, is only an example. Fundamentally, usually more
than four yarns per melt spinning apparatus are produced in a
spinning facility. However, the number of yarns is not important
for the explanation of the invention.
[0051] In FIG. 3, a further variant of the melt spinning apparatus
according to the invention is shown schematically in a side view.
The exemplary embodiment is essentially identical with the
exemplary embodiment according to FIG. 1, so that only the
differences will be explained at this point, and for the remainder,
reference is made to the above description.
[0052] In the exemplary embodiment of the apparatus according to
the invention shown in FIG. 3, a guide means 32 and a guide godet
20 are disposed between the drawing device 4 and the windup device
22, for guiding the yarn web 33. The guide godet 20 is held on the
godet support 14, on the side, next to the winding locations 23.1
and 23.4, so that the yarns of the yarn web 33, which are guided on
the guide godet 20 with a partial loop around it, can be fed
directly to the winding locations 23.1 to 23.4.
[0053] In order to rotate the yarns of the yarn web by 90.degree.
after they run off from the godet unit 16.2, in the yarn run plane,
the guide means 32 is provided, so that the off run of the yarn web
at the godet unit 16.2 and the on run of the yarn web on the guide
godet 20 can be stabilized using the guide means 32. In this
connection, rotation of the yarn web 33 takes place without
deflection and spreading, in a straight yarn run.
[0054] The function of the exemplary embodiment shown in FIG. 3 is
identical to the function of the exemplary embodiment according to
FIGS. 1 and 2, so that at this point, reference is made to the
above description and no further explanation will be given.
[0055] The deflection means for transfer of the yarn web from the
drawing device to the windup device, shown in FIG. 3, can
advantageously also be integrated into the exemplary embodiment
according to FIG. 1 Likewise, the possibility exists of structuring
the exemplary embodiment of the melt spinning apparatus shown in
FIG. 3 without an additional guide means.
[0056] In FIG. 4, a further exemplary embodiment of the melt
spinning apparatus according to the invention is shown
schematically, in a front view. The exemplary embodiment is
essentially identical with the above exemplary embodiment according
to FIG. 3, so that in order to avoid repetition, only the
differences will be explained, and for the remainder, reference is
made to the above description.
[0057] In the case of the exemplary embodiment shown in FIG. 4, the
windup device 22 is formed by two spool-up apparatuses 35.1 and
35.2 disposed next to one another. The spool-up apparatuses 35.1
and 35.2 are arranged with mirror symmetry relative to one another,
and both possess the same structure. Each of the spool-up
apparatuses 35.1 and 35.2 therefore has multiple winding locations
23.1 to 23.4. The windup device shown in FIG. 3 therefore
represents the side view of one of the spool-up apparatuses 35.1
and 35.2. In this regard, reference is made to the description
given for FIG. 3.
[0058] The spool-up apparatuses 35.1 and 35.2 are operated
synchronously, in order to wind the yarns of the yarn web 33 up to
form spools, in each instance. The yarn web 33 is passed in by way
of a guide godet 20 that precedes the windup device 22. For this
purpose, the guide godet 20 is held in the center of the two
spool-up apparatuses 35.1 and 35.2, on a support frame 37 above the
spool-up apparatuses 35.1 and 35.2. The guide godet 20 is disposed
to project out of the godet support 34 and driven by way of an
electric motor.
[0059] After the yarns of the yarn web 33 run off the guide godet
20, the yarn web is divided, so that each spool-up apparatus 35.1
and 35.2 winds up the same number of yarns to form spools.
[0060] A drawing device 4 is disposed on the support frame 37,
above the spool-up apparatuses 35.1 and 35.2. In this exemplary
embodiment, the drawing device 4 is also formed by two godet units
16.1 and 16.2, which each have two driven godets 17. The godets 17
of the godet units 16.1 and 16.2 are preferably operated as godet
duos, so that a differential speeds for drawing the yarns can be
set between the godet units 16.1 and 16.2.
[0061] The godets 17 of the godet units 16.1 and 16.2 are oriented
with their axes to be the same as the spool spindles 24.1 and 24.2
of the two spool-up apparatuses 35.1 and 35.2. In contrast, the
guide godet 20 disposed between the godet unit 16.1 and the windup
apparatus 22 is directed transversely, so that during the
transition of the yarns from the godet unit 16.2 to the guide godet
20, the yarn web is rotated by an angle in the range of 90.degree.
in its yarn run plane. In this connection, no further guide means
is provided between the godet unit 16.2 and the guide godet 20.
[0062] In this exemplary embodiment, the godet units 16.1 and 16.2
are disposed in godet boxes 36.1 and 36.2, respectively. Thus,
heated godets 17 are preferably used in the godet units 16.1 and
16.2, so that a thermally insulated environment for treatment of
the yarns is formed within the godet boxes 36.1 and 36.2.
[0063] The spinning device 1 and the cooling device 3 are
configured identical with the exemplary embodiment according to
FIGS. 1 and 2, but the number of spinnerets is doubled. Thus, a
total of four double spinnerets 8.1 to 8.4 is provided, in order to
extrude two yarns simultaneously per spinneret location. For a
further explanation, reference is made at this point to the above
description of FIG. 2.
[0064] In the exemplary embodiment according to FIG. 4, the
spinnerets are also oriented in a row-shaped arrangement, which
runs transverse to the godet axes of the godets 17. In this regard,
the yarns of the yarn web 33 are transferred from a spinning plane
determined by the spinnerets to a treatment plane determined by the
godet units 16.1 and 16.2. In this connection, a guide means 19 is
provided, in order to rotate the yarn run plane of the yarn web by
an angle in the range of 90.degree.. The guide means 19 is disposed
directly ahead of the drawing device 4. In this connection, the
yarns are jointly guided parallel next to one another, as a yarn
web.
[0065] A collecting yarn guide 14 and a preparation device 15 are
disposed between the drawing device 4 and the spinning device 1, in
order to bring the filament strands that are extruded per spinneret
together into yarns.
[0066] The exemplary embodiment shown in FIG. 4 represents a
particularly compact arrangement for the production of a plurality
of yarns within a spinning location. The function of the exemplary
embodiment shown in FIG. 4 is identical with the function of the
exemplary embodiments mentioned above, so that no further
explanation will be given in this regard.
[0067] The exemplary embodiments shown in FIGS. 1 to 4 are examples
of the structure and placement of the drawing device.
Fundamentally, the possibility exists of integrating additional
treatment steps and treatment assemblies in the region between the
spinning device and the windup device.
REFERENCE SYMBOL LIST
[0068] 1 spinning device
[0069] 2 spinneret
[0070] 3 cooling device
[0071] 4 drawing device
[0072] 5 melt intake
[0073] 6 multiple pump
[0074] 7 pump drive
[0075] 8.1, 8.2 double spinneret
[0076] 9 spinning bar
[0077] 10 blowing chamber
[0078] 11.1, 11.2 cooling cylinder
[0079] 12 partition wall
[0080] 13 cooling shaft
[0081] 14 collecting yarn guide
[0082] 15 preparation device
[0083] 16.1, 16.2 godet unit
[0084] 17 godet
[0085] 18 companion roll
[0086] 19 guide means
[0087] 20, 20.1, 20.2 guide godet
[0088] 21 swirling device
[0089] 22 windup device
[0090] 23.1 . . . 23.4 winding locations
[0091] 24.1, 24.2 spool spindle
[0092] 25 spool turret
[0093] 26 spool
[0094] 27 deflection roll
[0095] 28 changing unit
[0096] 29 press-down roller
[0097] 30 machine frame
[0098] 31 godet drive
[0099] 32 drive means
[0100] 33 yarn web
[0101] 34 godet support
[0102] 35.1, 35.2 spool-up apparatus
[0103] 36.1, 36.2 godet box
[0104] 37 support frame
* * * * *