Technical Field
[0001] The invention relates to a method for operating a ring spinning machine according
to the preamble of the independent claim, and a corresponding ring spinning machine.
Prior Art
[0002] Service robots or service carriages that piece threads on ring spinning machines
after a thread break are well known. Mention is made here in particular of the service
robot from
EP 394671 A2. This service robot moves along a row of spinning stations, detects thread breaks,
and then attempts to eliminate the detected thread breaks. The belt driving the spindle
is initially lifted from the spindle by means of a special spindle braking device,
and the spindle is subsequently stopped. In addition, an auxiliary thread is used.
One end of the auxiliary thread is fastened to a winder that is movable around the
spinning cop in order to then be wound around the spinning cop. The auxiliary thread
is subsequently threaded through the ring traveller and the thread guide and brought
into the area of the outlet of the drafting system. The spindle and thus also the
spinning cop are driven once again, and the auxiliary thread is brought into the path
of the drawn roving so that the auxiliary thread is twisted with the drawn roving.
[0003] DE 3932727 discloses a method for eliminating a thread break on a ring spinning machine. It
is provided that an auxiliary thread that is carried along by a service carriage is
loosely placed on the cop of a spindle and pieced to a slub that is delivered by a
drafting system. It is likewise known from
DE 3932727 that during the operation of the service carriage, the spindle actuates a brake by
means of an actuating element and/or the drive is interrupted.
[0004] WO 2009/132469 relates to a ring spinning machine having a single-spindle drive. The workstations
may contain sensors or other means for determining parameters at the workstations.
Thus, for example, the current or power consumption of the spindle drive or the spindle
speed may be determined by the spindle drive electronics system, optionally by use
of sensors. Information concerning thread breaks or thread tension may be ascertained
from these measuring data. In the event of a thread break, the spindle in question
or the drive associated with it may be autonomously shut down by the spindle drive
electronics unit or the section electronics unit.
[0005] The spindle drive electronics system unit or section electronics system unit in question
may be designed, for example, for autonomously carrying out one or more of the following
functions: thread break detection, slub stopping, single-spindle drive control, thermal
monitoring of the single-spindle drives, slubbing switchover, spindle speed measurement,
thread tension measurement, communication with an associated automatic traveller,
operator guidance of spinning stations, malfunction displays, hand switches, and/or
other sensor functions. A thread break and/or increased thread tension are/is preferably
determinable by the particular spindle drive electronics system unit via the current
or power consumption of the electric motor drive associated with the particular workstation.
The machine control unit itself carries out, for example, the start-up and/or process
control, which may be effective, for example, for normal shut-off as well as for an
emergency shut-off in the event of a power failure.
[0006] However, regardless of a mechanical spindle brake or a single spindle having an electronics
system, it is disadvantageous that the service carriage has only limited usability,
since in certain configurations no piecing by the service carriage is possible, as
described in
EP 415290, for example, as irreparable thread breaks.
Description of the Invention
[0007] The object of the invention is to provide a method for operating a service carriage
with which the reliability and possible applications of the service carriage may be
increased.
[0008] According to the invention, the object is achieved by a method for operating a ring
spinning machine having a service carriage according to the preamble of the independent
method claim, in that a status of the spinning station having the thread break is
determined in a module, and based on the determined status a decision is made as to
whether the thread break can be eliminated by the standard program of the service
carriage.
[0009] If it is ascertained that the determined status of the spinning station does not
allow elimination of the thread break by the standard program, the service carriage
advantageously does not approach the spinning station. Hence, this keeps the service
carriage available for spinning stations that have thread breaks which can be eliminated
by the standard program. Consequently, downtimes of spinning positions that can be
restarted by the service carriage using the standard program can be reduced, as the
service carriage does not work unsuccessfully at spinning stations which actually
require special programs. This allows a significant reduction of total downtimes and
thus an increase in production capacity as well as decrease in energy consumption.
At the same time, it enables a higher number of spinning positions to be handled by
one robot.
[0010] Alternatively, the service carriage may approach the spinning station and determine
the status of the spinning station. In this way, unnecessary attempts to eliminate
a thread break are avoided. For some types of spinning machines or types of yarns
to be produced, the service carriage may also approach the spinning station and determine
the status of the spinning station after a first pre-assessment of the status has
already been performed by a special module as described herein. For example, only
a rough preliminary analysis may be carried out by a sensor (as subsequently described
in more details) installed at a certain spinning position in order to detect certain
types of defects that cannot be treated with the standard program. If treatment by
the standard program cannot be ruled out by this preliminary analysis, the service
wagon may approach the spinning position and perform a second more sophisticated analysis
using one or more additional types of sensors (as described herein) in order to determine
whether the thread break can be eliminated by the standard program of the service
carriage. This can further reduce the time required for unsuccessful runs of the standard
program for elimination of thread breaks. At the same time it allows to combine relatively
simple and cost-efficient sensors arranged at the spinning stations with a more sophisticated
sensor system arranged at the service carriage. This allows to decrease spindle downtimes
and at the same time a highly reliable determination of thread breaks that can be
eliminated by the standard program with relatively low costs for sensors.
[0011] The ring spinning machine may advantageously be informed of the determined status
of the spinning station, this status may be shown on a display, and/or an operator
may be called to place the spinning station back in operation. As such, an operator
may e.g. be called to place a spinning station back to operation if it was determined
that this can not be done by the standard program. Alternatively or in addition, an
operator may e.g. be called to place a spinning station back to operation if a high
number of yarn breaks has occurred.
[0012] The spinning station may advantageously be monitored by a camera, a microphone, a
capacitive sensor, the spindle monitor, and/or a thread and slub monitor, the result
be transmitted to the module, and the status is determined in the module. Alternative
means for the same purpose are likewise conceivable. According to one variation of
the invention, one or multiple of these means are arranged at each spinning stations.
Alternatively or in addition, one or multiple of these means may be used to monitor
multiple spinning stations. As such, e.g. a camera may be used in order to monitor
multiple spinning stations.
[0013] The spinning station may advantageously be recorded by at least one camera, and the
status of the spinning station determined by image analysis. It is possible for the
spinning station to be recorded in sections by different cameras, the result transmitted
to the module, and the status determined in the module. It is advantageous when the
recorded status images are stored and used in the image analysis of the status of
the spinning station. Thus a particualry reliable determination of yarn break that
can be eliminated by the standard program becomes possible.
[0014] The accuracy of the status analysis during operation may be improved by presenting
and demonstrating actual examples of statuses to the service carriage in a type of
training. This is particularly advantageous when a ring spinning machine is converted
or modified, and the conditions at the spinning stations have changed. This training
may advantageously improve the quality or speed of the status analysis. The module
may also contain self-learning functions so that the status analysis may be adjusted
for altered environmental conditions such as production speed (delivery, rotational
speed), yarn color, lighting, etc.
[0015] Good results may be obtained if the service carriage is presented with examples of
statuses before or during operation in order to improve the quality or speed of the
status analysis.
[0016] At least one of the following statuses is advantageously determined in which the
thread break cannot be eliminated by the standard program of the service carriage:
- the roving bobbin is empty or the roving feed is interrupted;
- a winder is situated at the discharge cylinder;
- a stationary thread is situated between the discharge cylinder and the thread guide;
- a soiled thread guide;
- no tube is present;
- no spindle is present;
- a soiled or missing ring traveller; or
- unknown interfering objects.
[0017] The service carriage or a cleaning carriage may advantageously carry out at least
one of the following actions before eliminating the thread break:
- cleaning a ring traveller or inserting a new ring traveller;
- removing a stationary thread;
- removing a winder; or
- triggering slub stopping.
[0018] The service carriage and/or the ring spinning machine may advantageously be retrofitted
with the module for determining the status. Hence, retrofitting of existing machines
with such a system becomes possible.
[0019] According to the invention, the object is further achieved by a ring spinning machine
having a service carriage according to the preamble of the independent device claim,
in that a module is present for determining the status of the spinning station, and
based on the determined status ascertains whether the thread break can be eliminated
by the standard program of the service carriage.
[0020] The module may advantageously be designed to inform the ring spinning machine of
the status of the spinning station, to show the status on a display, and/or to call
an operator. Hence, a particularly economical operation of the ring spinning machine
becomes possible and the amount of manual surveillance by the operator can be reduced.
[0021] At least one camera, at least one microphone, at least one capacitive sensor, the
spindle monitor, and/or at least one thread and slub monitor may advantageously be
present which are/is connected to the module in order to determine the status of the
spinning station. These means may be interconnected with the module directly or indirectly.
Hence e.g. information acquired by a camera may be processed by an image registration
sytem that may be part of the module or may be separated from the module but provide
information to the module.
[0022] A memory may advantageously be present for storing status images and comparison images
that are recorded with a camera, and for using same in an image analysis of the status
of the spinning station.
[0023] To determine the status of the spinning station, the module may advantageously determine
at least one of the following statuses:
- the roving bobbin is empty or the roving feed is interrupted;
- a winder is situated on the discharge cylinder;
- a stationary thread is situated between the discharge cylinder and the thread guide;
- a soiled thread guide;
- no tube is present;
- no spindle is present;
- a soiled ring traveller; or
- unknown interfering objects.
[0024] The service carriage and/or the ring spinning machine may advantageously be retrofitted
with the module for status detection.
[0025] As a result of the present invention, configurations are excluded in which piecing
by the service carriage is not possible. The reliability and possible applications
of the service carriage may thus be advantageously increased.
Brief Description of the Figures
[0026] Further advantages of the invention are described in the following exemplary embodiments,
wherein
- Figure 1
- shows a ring spinning machine having a service carriage;
- Figure 2
- shows a detailed drawing with a service carriage upstream from a spinning station;
and
- Figure 3
- shows a flow chart of the method according to the invention.
[0027] Identical features are provided with the same reference numerals in the various figures.
Approaches for Carrying Out the Invention
[0028] The foregoing summary, as well as the following detailed description of the preferred
embodiments, is better understood when read in conjunction with the appended drawings.
For the purposes of illustrating the invention, an embodiment that is presently preferred,
in which like numerals represent similar parts throughout the several views of the
drawings, it being understood, however, that the invention is not limited to the specific
methods and instrumentalities disclosed.
[0029] Figure 1 schematically shows a ring spinning machine 1 according to the invention
which has a plurality of adjacently situated spinning stations 2. The spinning stations
2 are situated in a longitudinal direction x of the ring spinning machine 1, between
a head 3
1 and a foot 3
2. The head 3
1 and the foot 3
2 of the ring spinning machine 1 may contain bearings, drives, controllers, etc., necessary
for operating the machine. As is further apparent, for example, at two spinning stations
2 schematically illustrated in Figures 1 and 2, each spinning station 2 is made up
of at least one roving bobbin 4 that is situated above a drafting system 5, and onto
which a roving 6 is wound. The roving 6 runs from the roving bobbin 4 through the
drafting system 5, where it is drawn, and from there is led over a thread guide 7
and a balloon control ring 8 to a yarn forming element. Situated on a ring rail 11
is a ring with a mounting 12 that bears a ring traveller 13. The revolving ring traveller
13 winds the finished yarn onto a tube 10. The tube 10 is mounted on a spindle 9.
A service carriage 14, which in the event of a thread break travels to an appropriate
spinning station 1 and automatically eliminates the thread break, moves along the
ring spinning machine 1. The individual spinning stations 2 may be equipped with spindle
monitors 15 or other sensors for monitoring the ring traveller 13 and/or the run of
the thread in order to detect a thread break. Alternatively or additionally, the spinning
stations 2 may be equipped with single-spindle drives.
[0030] Figure 2 schematically shows a spinning station with a service carriage 14 situated
in front of the spinning station. The service carriage 14 includes a controller 16
and a memory 160, which may be part of the controller 16 or may be separate from same.
The main controller 16 via a standard program controls the operation of the service
carriage 14 for automatically eliminating a thread break. The service carriage 14
includes several, all, or at least one of the following function modules:
- a yarn search device 17 as disclosed in WO 2018/100464; WO 2018/100464 relates to a method and a device for detecting the thread end on a cop in a ring
spinning machine that produces yarn, after an interruption due to a thread break,
wherein after the thread break the cop is approached by a suction nozzle, into which
the thread end is suctioned from the rotating cop. A bar and a movable strap having
a carrier surface approach the surface of the cop. The movable device moves in a different
direction than the rotating cop, and the yarn end is captured by the movement of the
movable device and is withdrawn from the cop, and the yarn end is conveyed to the
suction nozzle;
- a cop lifting device 18 as described in unpublished Czech Patent Application No. PV 2018-47 dated January 31, 2018; the patent application relates to a cop lifting device for transporting a cop from
the spindle of a spinning station of a ring spinning machine to a thread end search
position;
- a traveler threading device 19 as described in unpublished Czech Patent Application
No. PV 2018-34 dated January 24, 2018; the patent application relates to a device for threading yarn into a traveller on
a ring having a flange on a spinning station of a ring spinning machine;
- a yarn handling device 20 as described in unpublished Czech Patent Application No.
PV 2018-48 dated January 31, 2018; the patent application discloses a yarn handling device on a spinning station of
a ring spinning machine for detecting a thread end on a cop. The device has a suction
tube with a suction opening that may be associated with a spinning station, wherein
the suction tube is connected to a vacuum source, wherein the suction tube is mounted
on a positioning system for guiding the opening of the suction tube to a drafting
system of the spinning station in order to resume the spinning operation;
- a positioning device 21 as described in unpublished Czech Patent Application No. PV 2018-49 dated January 31, 2018, and unpublished Swiss Patent Application No. 01185/17 dated September 28, 2017; the positioning device 21 is used for positioning the service carriage 14 in front
of the spindle 9.
- a spindle brake unit 22 that is identical or similar to the disclosure in EP 394671, wherein the brake shoe 246 may be replaced by a roller;
- a display 23 for displaying and entering data;
- a module 241 for determining the status of a spinning station 2.
[0031] All of the mentioned disclosures in the patent applications for portions of the service
carriage 14 are integral parts of the present description. The communication within
the service carriage 14 is illustrated by dotted lines. The service carriage may integrate
all parts or only individual subfunctions. Figure 3 shows in parallel a flow chart
of the method according to the invention.
[0032] If a thread break is detected (Figure 3, step 100), the standard program provides
for piecing, so that the service carriage 14 searches for the thread end on the cop
and guides it through the balloon control ring 8 and the thread guide 7 to the drafting
system 5, where it is pieced.
[0033] If a thread break is now detected at a spinning station 2 (Figure 3, step 100), according
to the invention the module 24
1 and/or a corresponding module 24
2 situated on the ring spinning machine 1 determine(s) the status of the spinning station
2 (Figure 3, step 200) in order to ascertain whether the thread break can be eliminated
by the service carriage 14, using the stated automated program.
[0034] The module 24
1 and/or the module 24
2 could determine the following as possible statuses in which automatic elimination
of a thread break via the above-mentioned components is difficult or impossible:
- the roving bobbin 4 is empty or the roving feed is interrupted;
- a winder is situated on the discharge cylinder of the drafting system 5;
- a stationary thread is situated between the discharge cylinder and the thread guide
7;
- a soiled thread guide 7;
- no tube is present on the spindle 9;
- no spindle 9 is present;
- a soiled or missing traveller 13; or
- unknown interfering objects.
[0035] The status of the spinning station 2 could be determined by a camera 25, a microphone
26, a capacitive sensor 27, the spindle monitor 15, and/or a thread and slub monitor,
or some other equivalent sensor.
[0036] In a first variant, the service carriage 14 or the ring spinning machine 1 includes
one or more cameras 25 that record one or more images of the spinning station. It
is also conceivable, as illustrated in Figure 2, to use multiple cameras, for example
a camera at the top that records the roving bobbin 4 and the drafting system 5, a
camera situated in the middle for the thread guide 7 and the balloon control ring
8, and a camera at the bottom for the spindle 9, cop 10, ring 12, and ring traveller
13. The recorded images are processed in the module 24
1 and/or module 24
2 for the status detection. Using appropriate pattern recognition algorithms and example
or comparison images, various operating states at the spinning station are then recognized.
A spinning station that is running without problems during piecing, or images with
corresponding statuses that are to be determined, could be used as a comparison image.
Many of the statuses mentioned above may be determined by image recognition.
[0037] In a second variant, the status, for example of a winder on the discharge cylinder,
is determined by a capacitive sensor 26. The ring spinning machine 1 is equipped with
a controller 50 and a memory 500, which may be part of the controller 50 or may be
separate from same. In the present example, in addition to the service carriage the
ring spinning machine 1 includes the module 24
2 for status detection. The sensor 26 is read out by the module 24
2, and the sensor 26 transmits the corresponding measuring data. The module 24
2 then recognizes, for example, that a winder is present on the discharge cylinder
of the drafting system 5.
[0038] In a third variant the status is determined by a microphone 27. Changes in one of
the customary sounds during the spinning operation may indicate one of the above-mentioned
statuses. The microphone 27 is read out by the module 24
2 and transmits the corresponding measuring data. The module 24
2 then recognizes one of the statuses mentioned above.
[0039] In a fourth variant the status is determined by a spindle monitor 15. It could be
recognized in particular whether a ring traveller 13 is present, and whether it is
soiled.
[0040] In a fifth variant the status is determined by a thread and slub monitor, which could
possibly recognize a stationary thread, for example.
[0041] It is understood that the stated variants may be used and evaluated in parallel and
in combination. It possible for the module 24
2 of the ring spinning machine 1 to determine (Figure 3, decision in step 300) that
a thread break cannot be eliminated by the standard program of the service carriage
14 (Figure 3, step 400, left path from step 300). In this case, the service carriage
14 may omit the spinning station 2 in question, and need not approach it. If no such
status of an irreparable thread break is determined, the thread break is eliminated
in the specified manner (Figure 3, step 500, right path from step 300).
[0042] It is also possible for the service carriage 14 to approach the spinning station
2, and for the module 24
1 to check whether an appropriate status is present. This is possible, for example,
when no such module 24
2 is present on the ring spinning machine 1. If the module 24
1 makes no finding that the thread break cannot be eliminated, the thread break is
automatically eliminated by the above-mentioned components of the service carriage
14, using the stated standard program.
[0043] If a status is determined and recognized that at the spinning station 2 it is not
possible to eliminate the thread break using the above-mentioned program of the service
carriage 2, the service carriage 2 does not attempt to eliminate the thread break.
The spinning station could be displayed on the spindle monitor 15 by an LED, etc.
The service carriage 14 could then inform the ring spinning machine 1 about the spinning
station 2 and the type and scope of the determined status. The communication between
the service carriage 14 and the controller of the ring spinning machine 1 is illustrated
by a dashed arrow. The ring spinning machine 1 updates this information in a central
data information system of the spinning facility, and could possibly show it on a
display 51. The information may advantageously indicate which service person, or which
operator/technician with specific capabilities, is needed to place the spinning station
2 back in operation. Such an operator could be called via a mobile device 15 (smart
watch, smart phone, tablet, etc.). The mobile device 15 could be linked to the ring
spinning machine 1 or the higher-order central data information system of the spinning
facility via a mobile radio communications network or a local connection (NFC, WLAN,
ZigBee, etc.).
[0044] The accuracy of the status analysis during operation may be improved by presenting
and demonstrating actual examples of statuses to the service carriage. This is particularly
advantageous when a ring spinning machine is converted or modified, and the conditions
at the spinning stations have changed. This training may advantageously improve the
quality or speed of the status analysis. The module 24
1, 24
2 may contain self-learning functions so that the status analysis may be adjusted for
altered environmental conditions such as production speed (delivery, rotational speed),
yarn color, lighting, etc.
[0045] In another exemplary embodiment, if a status is determined that it is not possible
to eliminate the thread break with the standard program, the service carriage could
carry out at least one of the following actions before eliminating the thread break:
- cleaning a ring traveller or inserting a new ring traveller;
- removing a stationary thread;
- removing a winder; or
- triggering slub stopping and resetting a triggered slub stop.
[0046] This assumes that the service carriage 14 is capable of such an activity. A suction
device and/or a gripper and/or brushes could remove a winder or a stationary thread.
[0047] In another exemplary embodiment, a second service or cleaning carriage could take
over the above-mentioned activities for eliminating the undesirable statuses. As soon
as the ring spinning machine 1 or the service carriage 14 determines one of the statuses
mentioned above, the second service carriage (cleaning carriage) actuates the spinning
station and corrects the status and prepares the spinning station for piecing by the
service carriage 14. The second service or cleaning carriage could also take over
the entire function of status determination by the module 24
1, so that the service carriage 14 always approaches spinning stations that can be
pieced.
[0048] The service carriage 14 and/or the ring spinning machine 1 could be retrofitted with
the sensors (camera, microphone, capacitive sensor, thread and slub monitor, etc.)
and an additional module for determining the status, or retrofitted with the cleaning
carriage.
[0049] Configurations are advantageously excluded in which piecing by the service carriage
is not possible. The reliability and possible applications of the service carriage
may thus be advantageously increased.
List of reference numerals
[0050]
- 1
- ring spinning machine
- 2
- spinning stations
- 31
- head of the ring spinning machine 1
- 32
- foot of the ring spinning machine 1
- 4
- roving bobbin
- 5
- drafting system
- 6
- roving
- 7
- thread guide
- 8
- balloon control ring
- 9
- spindle
- 10
- tube
- 11
- ring rail
- 12
- ring mounting
- 13
- ring traveller
- 14
- service carriage
- 15
- spindle monitor
- 16
- controller
- 160
- memory
- 17
- yarn search device
- 18
- cop lifting device
- 19
- traveler threading device
- 20
- yarn handling device
- 21
- positioning device
- 22
- spindle brake unit
- 23
- display
- 241
- module for status determination (service carriage 14)
- 242
- module for status determination (ring spinning machine 1)
- 25
- camera
- 26
- capacitive sensor
- 27
- microphone
- 50
- controller of the ring spinning machine 1
- 500
- controller
- 51
- display of the ring spinning machine 1
- 52
- mobile device
- 100
- detection of a thread break
- 200
- status analysis
- 300
- decision as to whether elimination of the thread break is possible
- 400
- elimination of the thread break is not possible
- 500
- start of the thread piecing
1. A method for operating a ring spinning machine (1) having a service carriage (14),
wherein the ring spinning machine (1) has a plurality of spinning stations (2),
wherein the spinning stations (2) include a drafting system (5) having a discharge
cylinder, a thread guide (7), a balloon control ring (8), a spindle (9), a ring traveller
(13), and a spindle monitor (15), and
wherein the service carriage (14) moves along the spinning stations (2) on one side
of the ring spinning machine (1) and eliminates thread breaks at the spinning stations
(2) by means of a standard program, comprising the method step that a thread break
at a spinning station (2) is determined,
characterized in that
a status of the spinning station (2) having the thread break is determined in a module
(241, 242), and based on the determined status a decision is made as to whether the thread
break can be eliminated by the standard program of the service carriage (14).
2. The method for operating a ring spinning machine (1) according to Claim 1, characterized in that if it is ascertained that the determined status of the spinning station (2) does
not allow elimination of the thread break by the standard program, the service carriage
(14) does not approach the spinning station (2).
3. The method for operating a ring spinning machine (1) according to Claim 1, characterized in that the service carriage (14) approaches the spinning station (2), and the status of
the spinning station (2) is determined.
4. The method for operating a ring spinning machine (1) according to one of the preceding
claims, characterized in that the ring spinning machine (1) is informed of the determined status of the spinning
station (2), this status is shown on a display (23, 51), and/or an operator is called
to place the spinning station (2) back in operation.
5. The method for operating a ring spinning machine (1) according to the preceding claim,
characterized in that the spinning station (2) is monitored by a camera (25), a microphone (27), a capacitive
sensor (26), the spindle monitor (15), and/or a thread and slub monitor, the result
is transmitted to the module (241, 242), and the status is determined in the module (241, 242).
6. The method for operating a ring spinning machine (1) according to one of the preceding
claims, characterized in that the spinning station (2) is recorded by at least one camera (25), and the status
of the spinning station (2) is determined by image analysis.
7. The method for operating a ring spinning machine (1) according to the preceding claim,
characterized in that the spinning station (2) is recorded in sections by different cameras (25), the result
is transmitted to the module (241, 242), and the status is determined in the module (241, 242).
8. The method for operating a ring spinning machine (1) according to preceding Claim
6 or 7, characterized in that recorded status images are stored and used in the image analysis of the status of
the spinning station (2).
9. The method for operating a ring spinning machine (1) according to one of the preceding
claims,
characterized in that at least one of the following statuses is determined in which the thread break cannot
be eliminated by the standard program of the service carriage (14):
• the roving bobbin (4) is empty or the roving feed is interrupted;
• a winder is situated on the discharge cylinder;
• a stationary thread is situated between the discharge cylinder and the thread guide
(7);
• a soiled thread guide (7);
• no tube (10) is present;
• no spindle (9) is present;
• a soiled or missing ring traveller (13); or
• unknown interfering objects.
10. The method for operating a ring spinning machine (1) according to one of the preceding
claims,
characterized in that the service carriage (14) or a cleaning carriage carries out at least one of the
following actions before eliminating the thread break:
• cleaning a ring traveller (13) or inserting a new ring traveller (13);
• removing a stationary thread;
• removing a winder; or
• triggering slub stopping.
11. The method for operating a ring spinning machine (1) according to one of the preceding
claims, characterized in that the service carriage (14) and/or the ring spinning machine (1) are/is retrofitted
with the module (241, 242) for determining the status.
12. A ring spinning machine (1) having a service carriage (14),
wherein the ring spinning machine (1) has a plurality of spinning stations (2),
wherein the spinning stations (2) include a drafting system (5) having a discharge
cylinder, a thread guide, a balloon control ring (8), a spindle (9), a ring traveller
(13), and a spindle monitor (15),
wherein the service carriage (14) is situated so as to be movable along the spinning
stations (2) on one side of the ring spinning machine (1), and thread breaks at the
spinning stations (2) may be eliminated by means of a standard program,
characterized in that
a module (241, 242) is present for determining the status of the spinning station (2), and based on
the determined status ascertains whether the thread break can be eliminated by the
standard program of the service carriage (2).
13. The ring spinning machine (1) according to the preceding claim, characterized in that the module (241, 242) is designed to inform the ring spinning machine (1) of the status of the spinning
station (2), to show the status on a display (23, 51), and/or to call an operator.
14. The ring spinning machine (1) according to one of preceding Claims 12 or 13, characterized in that at least one camera (25), at least one microphone (27), at least one capacitive sensor
(26), the spindle monitor (15), and/or at least one thread and slub monitor are/is
present and are/is connected to the module (241, 242) in order to determine the status of the spinning station (2).
15. The ring spinning machine (1) according to one of preceding Claims 12 to 14,
characterized in that to determine the status of the spinning station (2) at least one of the following
statuses is ascertainable by the module (24
1, 24
2);
• the roving bobbin (4) is empty or the roving feed is interrupted;
• a winder is situated on the discharge cylinder;
• a stationary thread is situated between the discharge cylinder and the thread guide
(7);
• a soiled thread guide (7);
• no tube (10) is present;
• no spindle (9) is present;
• a soiled or missing traveller (13); or
• unknown interfering objects.