Title of Invention

A CENTRIFUGAL SPINNING DEVICE

Abstract A spinning device having a centrifugal spinning element rotatably mounted about an axis of rotation, which comprises a centrifuge bottom, a centrifuge neck disposed in the region of the centrifuge bottom, an electromagnetic drive installed on the centrifuge neck and also a thread guide tube, which is displaceably mounted parallel to the axis of rotation and projects through the centrifuge neck into the centrifugal spinning element, characterised in that a re-reeling sleeve (9) extending through the centrifuge neck (24) of the centrifugal spinning element (3) is displaceably disposed on the thread guide tube (7) and/or the centrifugal spinning element (3) is axially displaceable in such a manner that a yarn package (15) beginning in the region of the centrifuge bottom (26) with a cop winding can be established on the inner wall (25) of the centrifugal spinning element (3).
Full Text A centrifugal spinning device
Various spinning methods are known in connection with the
manufacture of staple fibre yarns.
Apart from ring spinning and rotor spinning, centrifugal
spinning, for example, is a spinning method that has been
known for a long time.
In the case of centrifugal spinning, a distinction is
basically made between two types of spinning, so-called
one-step spinning and so-called two-step spinning.
For both types of spinning, firstly a feed material, either
a sliver stored in a sliver can or a roving lying ready as
a roving bobbin, is drawn in a drawing arrangement,
corresponding to the desired yarn fineness, and conveyed
via an axially displaceably mounted thread guide tube into
a centrifugal spinning element rotating at high speed.
At the same time, the feed material emerging from the mouth
of the thread guide tube; is laid against the inner wall of
the centrifuge, with the formation of a yarn thread, and is
entrained by it. This means that the fibre material
obtains a rotation as a result of the rotation of the yarn
thread rotating with the centrifugal spinning element.
The thread produced by the imparted rotation is deposited
by the thread guide tube, which is mounted traversably and
axially displaceably, on the inner wall of the centrifuge
and there forms a yarn package, a so-called spinning cake.
In the case of single-step spinning, the speed of the
centrifuge and the delivery speed of the feed material are
matched to one another so that the thread deposited as
spinning cake already has its final rotation and in a
following operating cycle can be wound onto a re-reeling
sleeve, for example kept ready on the thread guide tube or
introduced from below into the centrifugal spinning
element. The spinning cops produced during these re-
reeling operations are subsequently rewound by means of a
bobbin winding machine postconnected in the production
sequence to form large-volume cross-wound bobbins.
In connection with the centrifugal spinning, however, not
only are two different spinning methods known, but also a
plurality of spinning devices which to some extent have
completely different structures.
In DE 42 08 039 Al, a centrifugal spinning device, however,
is described which comprises a tubular centrifugal spj.nning
element supported in magnet bearings, which has a centrally
disposed, electromagnetic centrifugal drive.
Centrifugal spinning devices constructed in such a manner
are both easily accessible from above and also from below,
so that a re-reeling sleeve can either be introduced from
below into the centrifugal spinning element, as shown in DE
42 08 039 Al, or is displaceably disposed on the thread
guide tube, as described for example in DE 195 23 835 Al
and is then introduced from above into the centrifugal
spinning element.
Although such tubular spinning centrifuges are easily
accessible, they have the considerable disadvantage that
they have relatively high energy consumption on account of
their design. In other words, the position of the drive
whose rotor comprises the tubular centrifugal spinnJ.ng
element in the region of the largest diameter results in a
relative unfavourable use of energy.
A clearly more favourable use of energy is produced if a
so-called pot centrifuge is used, i.e. if a centra fugaJ.
spinning element is used which comprises a neck-type
projection on which the electromagnetic drive of the
spinning centrifuge is installed.
A spinning centrifuge constructed in such a manner is
known, for example, from WO-98/11 284.
With this known centrifugal spinning device, the re-reeling
sleeve is introduced into the centrifugal spinning element
through a centrifuge opening situated opposite the
centrifuge neck and the finished spinning cop is removed
through the same centrifuge opening.
To guarantee a correct re-reeling of the yarn package
deposited on the inner wall of the centrifugal spinning
element onto the re-reeling sleeve introduced into a re-
reeling position, with these known centrifugal spinning
devices the depositing of the spinning cake takes place
from the bottom upwards. In other words, at the end of the
spinning process the re-reeling operation is initiated by
the re-reeling sleeve when the thread guide tube has
reached its upper position in the vicinity of the spinning
:;entrifuge bottom. In this case the yarn package is
rewound onto the re-reeling sleeve from the top downwards.
I.e. beginning at the sleeve point.
Mth such centrifugal spinning devices, great difficulties
lowever occur if a so-called lap breakage occurs during the
e-reeling operation. In such a case the remainder of the
'arn package still adhering to the inner wall of the
lentrifugal spinning element in the lower region often
1 revents the already partially wound re-reeling sleeve
t eing able to be removed from the centrifugal spinning
'; lement. This means that in such a case the respective
.; pinning centrifuge has to be stopped and firstly cleancjd.
i-urthermore, with this known centrifugal spinning device
t: ne produced spinning cops have also proved to be a
(disadvantage, since the direction of winding such spinning
c 3ps differs from spinning cops which were produced on ring
spinning machines.
S _nce the preparation device of the automatic cheese
v; _nders postconnected in the production process are as a
I lie set on ring spinning cops, the preparation of such
ci;ntrifugal spinning cops often causes great difficulties.
P; oceeding from the above-mentioned prior art, the object
o: the invention is to create a centrifugal spinning device
wl ich does not have the above-m.entioned disadvantages and
which in particular enable^s the production of spinning cops
which scarcely differ from ring spinning cops.
This object is achieved in accordance with the invention
with a spinning device as described in Claim 1.
Advantageous embodiments of the invention are the subject
matter of the sub-claims.
With the spinning device according to the invention, it has
been possible in a simple manner ro avoid the disadvantages
of the known spinning devices. In other words, the
spinning cops present after the re-reeling operation are
constructed, for examplej, like spinning cops v,'hich were
produced on a ring spinning machine and can therefore be
worked without any problems with the conventional reeling
technology. Furthermore, with the centrifugal spinning
device designed in accordance with the invention, the last
deposited yarn layer of the spinning cake can be reached at
any time, so that if required, for example after a thread
breakage during the spinning process or a lap breakage
during the re-reeling operation, an external initiation of
the re-reeling operation is possible at any time.
The auxiliary thread system appearing during such an
external initiation of the re-reeling operation is
relatively short, so that on the bobbin winding machine the
produced spinning cop can then usually be wound off without
any residue. The spinning cof) produced after an external
initiation of the re-reeling operation can also always be
removed from the centrifugal spinning element without any
problems.
This means that any residue of the yarn package still
remaining in the centrifugal spinning element as a result
of a lap breakage in no way disturbs the doffing operation
of the spinning cop and it can be reached for a possible
subsequent, second external initiation of a re-reeling
operation.
As represented in Claim 2, in an advantageous embodiment a
sensor device is provided, which monitors the moving feed
material. The sensor device, which is preferably
positioned between the drafting arrangement and the thread
guide tube, is connected via a signal line to a
corresponding control unit, preferably a workstation, so
that in the event of thread breakage it can be ensured
that, for example, the further feed of fibre material into
the centrifugal spinning element is uninterrupted and also
a re-reeling operating is initiated.
In an alternative embodiment the sensor device can also, as
described in Claim 3, be disposed beneath the centrifugal
spinning element and then monitors the rotating yarn
thread.
In this case too, the sensor device is connected via a
signal line to the workstation, which ensures that in the
event of a thread breakage the supply of fibre material
into the centrifugal spinning element is stopped and a re-
reeling operation is initiated.
As described in Figure 4, in a preferred embodiment a
thread release device is also provided, which can be placed
in a defined manner at the winding cone of the yarn package
and in so doing starts the re-reeling operation of the yarn
package rotating with the centrifuge onto the re-reeling
sleeve disposed on the thread guide tube and placed in
readiness in the re-reeling position.
The thread release device is used after a thread breakiige
during the spinning process and also after a lap breakage
during the re-reeling operation. In both cases, the thread
release device is placed at the winding cone of the yarn
package rotating with the spinning centrifuge and thus a
re-reeling operation is initiated.
Furthermore, in an advantageous embodiment it is provided
that the doffing of the produced spinning cop takes place
through the centrifuge opening situated opposite the
centrifuge neck (Claim 5). In this manner, the neck region
of the centrifugal spinning element can be kept relatively
small, which has a positive effect in particular on the
energy consumption of the spinning device.
Further details of the invention can be gathered from an
Bxemplified embodiment explained below with reference to
:he drawings.
"he single figure diagrammatically shows a centrifugal
.spinning device, characterised overall by reference number
, of a centrifugal spinning machine, not shown in further
detail. Such centrifugal spinning devices 1 equipped with
a so-called pot centrifuge are known in principle and are
described in relative detail in WO-98/11 284, for example.
Such centrifugal spinning devices preferably have a
centrifugal spinning element 3 rotatably mounted in a
spinning housing 2, which is supported in bearings 4 and is
driven by a single motor via an electromagnetic drive b.
The; bearings 4 are preferably constructed as magnet
bearings, for example as permanent magnet bearings.
The cent2'ifugal spinning device 1 also comprises a t;hread
guide tube 7 that can he. introduced into the centrifugal
spinning element 3. Attached to the thread guide tube 7 j.s
a drive 8, only indicated schematically, which imparts a
traversing movement to the thread guide tube 7 and
simultaneously axially moves the thread guide tube 7 w;i th
respect to the centrifugal spinning element 3.
A re-reeling sleeve 9 is displaceably mounted on the thread
guide tube 7, for example on the hollow piston rod of a
pneumatic cylinder 10 surrounding the thread guide tube 7.
The pneumatic cylinder 10 is in this case connected to a
source of compressed air (not shown) via a corresponding
pneumatic line, into which a valve, e.g. a 2/2 directional
valve 22 is connected. As shown in the figure, the valve
22 is connected to the workstation 22 via a control line
21.
\s indicated in the figure, the re-reeling sleeve 9 is
:ixed in a position of rest 11 during the regular spinning
process via the pneumatic cylinder 10 with respect to the
thread guide tube 7 and can be moved into a re-reeling
position 12, indicated by broken lines, for example to
initiate the re-reeling operation.
Furthermore, the centrifugal spinning device 1 comprises a
sensor device 13 for detecting a thread breakage.
The sensor device 13, which monitors the moving feed
material 18, is positioned beneath the drafting arrangement
) in a preferred embodiment and is connected via a signal
ine 20 to a control unit 19 belonging to the spinning
: ;tation.
'n alternative embodiment of such a sensor device is shown
:y broken lines in the figure. The sensor device 13A,
/ hich is also connected via a signal line 20A to the
A orkstation, is constructed, for €5xample, as a
photoelectric sensor and monitors the rotation of the
rDtating yarn thread 28.
"' 3 initiate the re-reeling operation, for example after
t: iread breakage during the spinning process or after a lap
b reakage during the re-reeling operation, a thread release
e ement 14 is also provided.
Ii this case the thread release element 14 has a cutting
ec ge 16 that can be placed against the winding cone 29 of
ti e yarn package 15 and also a thread guide contour 17
gi ipping over the cutting edge; in the axial direction.
which can be shifted via a drive 23 parallel to the inner
wall 25 of the centrifuge.
As can be seen from the figure, the drive 23 of the thread
release element 14 is connected via a control line 30 to
the control unit 19 belonging to the spinning station, the
so-called workstation, and can be controlled by it in a
defined manner.
Function of the device:
A sliver is supplied from a sliver can (not shown) or a
feed material 18 is supplied from a speed frame bobbin (not
shown either) to a slive^r drafting device disposed above
:he centrifugal spinning element 3, for example a drafting
irrangement 6. The feed material 18, for example a roving
'arn, is drawn according to the desired fineness and is
conveyed via the thread guide tube 7 into the centrifugal
; pinning element 3, where it is applied with the formation
( f a rotating yarn thread 28 to the inner wall 25 of the
Iotating centrifugal spinning element 3 and in so doing
rbtains a rotation.
" lis means that the thread produced as a result of this
,:: station is positioned by the thread guide tube 7 on the
;;iner wall 25 of the centrifugal spinning element 3 so that
a defined yarn package, a so-called spinning cake 15, is
f; -educed. During the spinning process and thus during the
c eation of the yarn package 15, which begins in the region
c: the centrifuge bottom 26 of the centrifugal spinning
e: ement 3, the thread guide tube 7 is moved in oscillating
manner up and down via the drive 8 and at the same time is
continuously lowered in the direction of the centrifuge
opening 27. The spun thread is as a result stored in the
manner of a so-called cop winding on the inner wall 35 of
the centrifugal spinning element 3.
When the yarn package 15 has reached a determined, settable
size, a re-reeling operation is initiated. This means that
the thread guide tube 7 Is moved by the drive 8 firstly
into the ne^xt upper dead centre of its traversing stroke
and then the re-reeling sleeve 6 is moved by the pneumatic
cylinder 10 out of a position of rest 11 into a re-reeling
position 12 in the region of the rotating yarn thread 28.
When cross winding the rotating yarn thread 28, the thread
is fixed at the re-reeling sleeve 9 and thus the re-reeling
operation is triggered. 7\t the same time a slubbing stop
device (not shown) , which is disposed in the region of the;
drafting arrangement 6 and interrupts the further supply of
roving yarn 18, is controlled via a control unit 19.
The spinning cop produced by re-reeling is then doffed via
the centrifuge opening 27 and supplied to a post-connected
bobbin winding machine, for example.
If a thread breakage occurs during the spinning process,
such a thread breakage is immediately detected by the
sensor device 13 or 13A and is immediately reported via the
signal line 20 or 20A to the control unit 19. Then the
control unit promptly activates the slubbing stop device
and also ensures that the thread guide tube 8 is moved into
the next upper dead centre of its traversing stroke. Then
the control unit 19 activates the directional valve 22 via
a signal line 21 and the drive of the thread release device
14 via a signal line 30. The directional valve 22 then
ensures that the pneumatic cylinder 10 pushes the re-
reeling sleeve 9 out of its position of rest 11 into its
re-reeling position 12, while the drive 23 introduces the
thread release device 14 parallel to the inner wall 25 into
the centrifugal spinning device.
The thread release device 14 is finally applied by its
cutting edge 16 to the winding cone 29 of the yarn package
L5. When placing the cutting edge 16 at the winding cone
19, a thread loop, which is wound around the re-reeling
jleeve 8 and thus initiates the re-reeling operation, is
:-eleased from the yarn package 15 rotating with the
¦: :entrifugal spinning element 3. Although the cutting edge
6 of the thread release device 14 acts close to the inner
vail 25 of the centrifugal spinning element 3, a few
V inding layers of the spinning cake 15 cannot always be
prevented from being disposed beneath the cutting edge? 16.
'I hese winding layers are raised during the re-winding
caeration by the thread guide contour 17 towards the re-
:: seling sleeve 9 and are transfe^rred to it. In this manner
t- le thread reilease element is prevented from being
o '¦erwound.
During this re-reeling operation the yarn package 15
c. iginally deposited at the inner wall 25 of the
cf ntrifugal spinning element 3 is re-wound onto the re-
re eling sleeve 9 standing ready in the re-reeling position
i:; and in so doing forms a spinning cop.
The spinning cop (not shown) is then removed through the
centrifuge opening 29 and is transferred to a postconnected
textile machine, preferably a bobbin winding machine, for
further processing.
The thread release device 14 is also used when a lap
breakage has occurred during the re-reeling operation. In
other words, when just a part of the yarn package lb could
be re-wound onto the re-reeling sleeve 9.
In such a case too, after the partially wound spinning cop
is doffed and a new re-reeling sleeve 9 has been positioned
on the thread guide tube 7 in the re-reeling position, the
thread release device 14 is introduced into the centrifugal
spinning element 3 again by means of its drive and
initiates a new re-reeling operation.
Patent Claims
1. A spinning device having a centrifugal spinning
element rotatably mounted about an axis of rotation, which
comprises a centrifuge bottom, a centrifuge neck disposed
in the region of the centrifuge bottom, an electromagnetic
drive installed on the centrifuge neck and also a thread
guide tube, which is displaceably mounted parallel to the
axis of rotation and projects through the centrifuge neck
into the centrifugal spinning element,
characterised in that a re-reeling sleeve (9) extending
through the centrifuge neck (24) of the centrifugal
spinning element (3) is displaceably disposed on the thread
guide tube (7) and/or the centrifugal spinning element (3)
is axially displaceable in such a manner that a yarn
package (15) beginning in the region of the centrifuge
bottom (26) with a cop winding can be established on the
inner wall (25) of the centrifugal spinning element (3).
2. A spinning device according to Claim 1,
characterised in that a sensor device (13) monitoring a
moving feed material (18) is provided and initiates the
start of a re-reeling operation in the event of thread
breakage during the spinning operation.
3. A spinning device according to Claim 1,
characterised in that a sensor device (13A) monitoring a
rotating yarn thread (28) is provided and initiates the
start of a re-reeling operation in the event of thread
breakage during the spinning process.
4. A spinning device according to Claim 1,
characterised in that a thread release device (14) is
provided, which after a thread breakage during the spinning
process or after a lap breakage during the re-reeling
operation enables the external initiation of a re-reeling
operation.
5. A spinning device according to Claim 1,
characterised in that a spinning cop present after the re-
reeling operation can be removed through a cent:rifuge
opening (27) opposite the centrifuge bottom (26) of the
cent:rifugal spinning element (3).


A spinning device having a centrifugal spinning
element rotatably mounted about an axis of rotation, which
comprises a centrifuge bottom, a centrifuge neck disposed
in the region of the centrifuge bottom, an electromagnetic
drive installed on the centrifuge neck and also a thread
guide tube, which is displaceably mounted parallel to the
axis of rotation and projects through the centrifuge neck
into the centrifugal spinning element,
characterised in that a re-reeling sleeve (9) extending
through the centrifuge neck (24) of the centrifugal
spinning element (3) is displaceably disposed on the thread
guide tube (7) and/or the centrifugal spinning element (3)
is axially displaceable in such a manner that a yarn
package (15) beginning in the region of the centrifuge
bottom (26) with a cop winding can be established on the
inner wall (25) of the centrifugal spinning element (3).

Documents:

1525-KOLNP-2004-(09-03-2012)-CORRESPONDENCE.pdf

1525-KOLNP-2004-ABSTRACT 1.2.pdf

1525-KOLNP-2004-ABSTRACT-1.1.pdf

1525-kolnp-2004-abstract.pdf

1525-KOLNP-2004-CANCELLED PAGES.pdf

1525-KOLNP-2004-CLAIMS 1.2.pdf

1525-KOLNP-2004-CLAIMS-1.1.pdf

1525-kolnp-2004-claims.pdf

1525-KOLNP-2004-CORRESPONDENCE 1.1.pdf

1525-KOLNP-2004-CORRESPONDENCE 1.2.pdf

1525-KOLNP-2004-CORRESPONDENCE.1.3.pdf

1525-kolnp-2004-correspondence.pdf

1525-KOLNP-2004-DESCRIPTION (COMPLETE) 1.2.pdf

1525-KOLNP-2004-DESCRIPTION (COMPLETE)-1.1.pdf

1525-kolnp-2004-description (complete).pdf

1525-KOLNP-2004-DRAWINGS 1.2.pdf

1525-KOLNP-2004-DRAWINGS-1.1.pdf

1525-kolnp-2004-drawings.pdf

1525-KOLNP-2004-EXAMINATION REPORT.1.3.pdf

1525-KOLNP-2004-FORM 1-1.1.pdf

1525-KOLNP-2004-FORM 1.2.pdf

1525-kolnp-2004-form 1.pdf

1525-KOLNP-2004-FORM 18.1.3.pdf

1525-kolnp-2004-form 18.pdf

1525-KOLNP-2004-FORM 2-1.1.pdf

1525-KOLNP-2004-FORM 2.2.pdf

1525-kolnp-2004-form 2.pdf

1525-KOLNP-2004-FORM 26.1.3.pdf

1525-KOLNP-2004-FORM 3 .2.pdf

1525-KOLNP-2004-FORM 3-1.1.pdf

1525-KOLNP-2004-FORM 3.1.3.pdf

1525-kolnp-2004-form 3.pdf

1525-KOLNP-2004-FORM 5.1.3.pdf

1525-KOLNP-2004-FORM 5.2.pdf

1525-kolnp-2004-form 5.pdf

1525-KOLNP-2004-FORM-27.pdf

1525-KOLNP-2004-GPA.1.3.pdf

1525-kolnp-2004-gpa.pdf

1525-KOLNP-2004-GRANTED-ABSTRACT.pdf

1525-KOLNP-2004-GRANTED-CLAIMS.pdf

1525-KOLNP-2004-GRANTED-DESCRIPTION (COMPLETE).pdf

1525-KOLNP-2004-GRANTED-DRAWINGS.pdf

1525-KOLNP-2004-GRANTED-FORM 1.pdf

1525-KOLNP-2004-GRANTED-FORM 2.pdf

1525-KOLNP-2004-GRANTED-LETTER PATENT.pdf

1525-KOLNP-2004-GRANTED-SPECIFICATION.pdf

1525-KOLNP-2004-OTHERS-1.1.pdf

1525-KOLNP-2004-OTHERS.1.3.pdf

1525-KOLNP-2004-PA.pdf

1525-KOLNP-2004-PETITION UNDER RULE 137.pdf

1525-KOLNP-2004-REPLY TO EXAMINATION REPORT.1.3.pdf

1525-KOLNP-2004-REPLY TO EXAMINATION REPORT.pdf

1525-kolnp-2004-specification.pdf

1525-KOLNP-2004-TRANSLATED COPY OF PRIORITY DOCUMENT.pdf


Patent Number 248981
Indian Patent Application Number 1525/KOLNP/2004
PG Journal Number 38/2011
Publication Date 23-Sep-2011
Grant Date 19-Sep-2011
Date of Filing 12-Oct-2004
Name of Patentee SAURER GMBH & CO. KG.
Applicant Address SAURER GMBH & CO. KG., LANDGRAFENSTRASSE 45, D-41069 MONCHENGLADBACH
Inventors:
# Inventor's Name Inventor's Address
1 BRUSS KARL HEINZ AKTIENSTR. 36, 41069 MONCHENGLADBACH
2 KOLTZE KARL CLEMAISWEG 16, 41844 WEGBERG
PCT International Classification Number D01H 1/08
PCT International Application Number PCT/EP2003/02804
PCT International Filing date 2003-03-18
PCT Conventions:
# PCT Application Number Date of Convention Priority Country
1 102 11 862.0 2002-03-18 Germany