EP3862306A1 - Procédé de fonctionnement doté d'un poste de travail d'une machine textile fabricant des bobineurs - Google Patents

Procédé de fonctionnement doté d'un poste de travail d'une machine textile fabricant des bobineurs Download PDF

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Publication number
EP3862306A1
EP3862306A1 EP21154474.7A EP21154474A EP3862306A1 EP 3862306 A1 EP3862306 A1 EP 3862306A1 EP 21154474 A EP21154474 A EP 21154474A EP 3862306 A1 EP3862306 A1 EP 3862306A1
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EP
European Patent Office
Prior art keywords
yarn
search process
automatic
work station
textile machine
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP21154474.7A
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German (de)
English (en)
Other versions
EP3862306B1 (fr
Inventor
Adalbert Stephan
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
RIETER AG
Original Assignee
Maschinenfabrik Rieter AG
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Publication date
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Publication of EP3862306A1 publication Critical patent/EP3862306A1/fr
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H67/00—Replacing or removing cores, receptacles, or completed packages at paying-out, winding, or depositing stations
    • B65H67/08—Automatic end-finding and material-interconnecting arrangements
    • B65H67/081—Automatic end-finding and material-interconnecting arrangements acting after interruption of the winding process, e.g. yarn breakage, yarn cut or package replacement
    • B65H67/085—Automatic end-finding and material-interconnecting arrangements acting after interruption of the winding process, e.g. yarn breakage, yarn cut or package replacement end-finding at the take-up package, e.g. by suction and reverse package rotation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/30—Handled filamentary material
    • B65H2701/31—Textiles threads or artificial strands of filaments

Definitions

  • the present invention relates to a method for operating a work station of a textile machine producing yarn bobbins, in particular a rotor or air-jet spinning machine, in which case at least one automatic yarn search process is carried out at the work station in the event of a yarn breakage, the aim of which is to pick up a yarn end that has accumulated on the yarn bobbin and where if a predetermined maximum number of automatic yarn search processes fails, a manually supported yarn search process is carried out.
  • Modern textile machines producing yarn bobbins such as spinning or winding machines, generally have a large number of individual workstations at which yarn is produced or rewound and wound onto yarn bobbins. There may be a variety of reasons for a yarn breakage at the workplaces, i. H. come to a break in the wound yarn.
  • a thread breakage can be automatically detected by sensors at the work stations, but the torn end of the thread usually runs onto the thread spool. In order to continue operating the work station, the end of the thread must be found and either reconnected to the thread of the primary bobbin or fed back into a spinning device.
  • the textile machine has devices for an automatic search for the yarn end that has run onto the yarn bobbin.
  • These facilities can be present, for example, at every job.
  • Mobile service facilities for example Service robots, which are each assigned, for example, to one side of the machine, can be designed for an automatic search for the end of the yarn on the yarn bobbin.
  • the automatic search for the end of the twine may remain unsuccessful despite several attempts.
  • manual intervention by an operator is unavoidable.
  • the operator may have to lift the thread bobbin, manually rotate the thread bobbin in the opposite direction to the winding direction and manually search for the end of the thread. This can be very tedious, especially in textile machines with a large number of workstations and the associated frequent operator intervention, especially because the yarn bobbins on the corresponding textile machines are usually arranged in an elevated position.
  • the object of the present invention is to make it easier for an operator to find a thread end that has run onto a thread spool.
  • the method relates to the operation of a work station of a textile machine producing yarn bobbins, whereby in the event of a yarn break at the work station at least one automatic yarn search process is carried out, the aim of which is to pick up a yarn end that has accumulated on the yarn bobbin. If a predetermined maximum number of automatic yarn search processes fails, a manually supported yarn search process is carried out. According to the invention, it is proposed that, during the manually assisted yarn search process, the yarn bobbin is rotated counter to its winding direction by means of a bobbin drive.
  • the main advantage of the method is first of all that an operator does not have to use muscle power to move the yarn bobbin during the manually assisted yarn search. This makes the operators clear relieved. In addition, the operator can concentrate on the actual task, namely the search for the end of the thread that has run onto the thread spool.
  • the method is particularly suitable for workplaces, the yarn bobbins of which are driven by individual motors, for example by winding roller drives designed as electric motors on the corresponding winding rollers.
  • the rotation of the yarn bobbin against its winding direction during the manually assisted yarn search process can be activated by the operator, for example, by making an entry at an input terminal. It is conceivable that the rotation speed of the thread bobbin can be adjusted by the operator.
  • the specified maximum number of automatic yarn search processes is preferably stored in a control of the work station or the textile machine.
  • the maximum number can be constant but also depend, for example, on the availability of an operator or on a current number of yarn breaks on the textile machine.
  • the specified maximum number can be in a range between 1 and 10, for example.
  • the maximum number can depend on the type of yarn currently being produced or rewound and can be stored in an article management system, for example.
  • a light source is additionally activated in the area of the yarn bobbin or can be activated by an operator. This can make it easier for the operator to visually search for the end of the yarn.
  • the at least one automatic yarn search process is carried out by the work station and / or by a service facility of the textile machine.
  • the Job for example, have a yarn search device for yarn search. This can in turn include, for example, suction nozzles and / or grippers or hooks.
  • the automatic yarn search process is carried out by the yarn search device of the work station itself, the work station is largely independent of yarn breaks at other work stations of the textile machine.
  • the workstations of the textile machine can possibly be designed to be simpler or more cost-effective.
  • At least one automatic yarn search process is initially carried out by the workplace itself and, in the event of a failure, a higher-level service facility is requested.
  • the job is stopped if the predetermined maximum number of automatic yarn search processes fails and an optical and / or acoustic signal is emitted.
  • the signal indicates to an operator that manual intervention at the work site is necessary.
  • the manually supported yarn search process is started when the operator arrives at the work site and makes an entry at the work site, for example. The entry can be made on an input terminal, for example. It is also conceivable that the operator operates a switch at the work station. A manual rotation of the thread bobbin can also be registered by the operator and the automatic rotation can then be triggered.
  • the optical signal can, for example, be emitted by a signal lamp assigned to the job or displayed on a display assigned to the job. Alternatively or additionally, an indication of the shutdown can be shown on a central display of the textile machine Job are displayed.
  • the acoustic signal can be emitted, for example, by a loudspeaker assigned to the work station.
  • the optical and / or acoustic signal is emitted continuously until an operator confirms it, for example in the form of an input.
  • permanent can mean that the signal is emitted continuously or at intervals.
  • the signal lamp can flash.
  • the optical and / or acoustic signal is preferably deactivated at the latest at the start of the manually assisted yarn search process.
  • automated maintenance processes can be carried out in areas of the work station that are independent of the yarn bobbin. In this way, the compulsory downtime at the workplace can be used efficiently. For example, an automated rotor cleaning of a spinning rotor can be carried out if the work station is a spinning station of a rotor spinning machine.
  • a suction nozzle is activated in the area of the yarn bobbin during the manually assisted yarn search process.
  • an operator can use the suction nozzle to find the end of the yarn.
  • the suction nozzle can be designed to be movable, for example.
  • the operator can feed the thread end to the suction nozzle after the thread end has been found.
  • the suction nozzle is, for example, a component of a yarn search device at the work station, and the further treatment of the yarn end can thus take place automatically, in particular.
  • the suction nozzle is preferably activated by an input by the operator. The rotation of the bobbin against its winding direction and the suction nozzle can be activated together with an input, for example.
  • a yarn end of the yarn package is detected by a sensor in the suction nozzle.
  • the work station can thus independently recognize that the end of the yarn has been successfully found. An additional input with which the operator signals the successful thread search may therefore not be necessary. This allows the operator to concentrate more quickly on other tasks.
  • the sensor can detect the end of the yarn, for example, electromagnetically or optically. Mechanical detection of the end of the yarn is also conceivable. When the end of the yarn is detected, the work station can return to normal operation, for example.
  • the suction nozzle is only activated when the sensor detects the end of the yarn. This requires that the operator manually insert the end of the yarn into the suction nozzle. The further treatment of the yarn end can, however, also take place automatically in this case, as described above.
  • the manually assisted yarn search process is ended by the detection of the end of the yarn by the sensor or a manual input, and the work station is thereby put into automatic operation.
  • automatic operation for example, a predetermined length of the yarn can be unwound from the yarn bobbin.
  • the end of the yarn can be fed to a spinning device, for example a spinning rotor or an air spinning nozzle. The spinning or winding operation can then be automatically restarted or continued.
  • the extended automatic yarn search process Yarn search process is carried out in comparison to the automatic yarn search process with changed parameters and / or by a different service facility.
  • the changed parameters can include, for example, the speed of rotation of the yarn bobbin and the suction power and / or the position of the suction nozzle.
  • Another service device can be, for example, a robot that specializes in searching for yarn and is equipped, in particular, with more powerful suction nozzles and / or brushes for brushing the end of the yarn from the yarn bobbin.
  • the automatic yarn search process can also be carried out, for example, with a yarn search device at the workplace and the extended automatic yarn search process with a higher-level service facility.
  • the extended automatic yarn search process can, for example, only be carried out after the specified maximum number of automatic yarn search processes has been unsuccessful.
  • priorities for the yarn search on a textile machine can be set for different workplaces, with, for example, the priority decreasing as the number of failed automatic yarn search processes at a specific workstation increases.
  • the priority of an extended automatic yarn search process can also be set lower than the priority of an automatic yarn search process.
  • yarn searches are first carried out at jobs with high priority and only later at jobs with low priority. This is particularly important if a patrolling service facility is used to search for yarn.
  • the suction power of the suction nozzle is increased during the extended automatic yarn search process. This increases the likelihood that the end of the yarn will be found successfully.
  • the increase in suction power can be increased, as already described, by reducing the number of parallel yarn searches on the textile machine. As a result, the entire negative pressure of a central negative pressure system is concentrated on a few or, in particular, only one job.
  • the suction power can also be increased by increasing the power of the vacuum system for a limited period of time. For this purpose, for example, the output of one or more pumps can be increased.
  • the manually assisted yarn search process can in particular be followed by a return of the yarn end into the spinning device. On the one hand, this can be done automatically. On the other hand, the return can also be carried out manually by the operator who is in the area of the work site as part of the manually supported yarn search process.
  • a textile machine producing yarn bobbins is proposed. This has a multiplicity of work stations, the work stations each having a winding roller with a winding roller drive.
  • the textile machine also has a controller. According to the invention, the controller is designed to operate at least one of the work stations in accordance with the preceding description. As already described, this makes it significantly easier for an operator to carry out a manual or manually assisted yarn search process.
  • the control can for example be a central control of the textile machine. However, it is also conceivable that the control is assigned to a group of workplaces or a single workstation. In particular, the textile machine can also have several controls.
  • the textile machine can have a service device which has already been described and which is designed to carry out an automated yarn search process.
  • the work stations can also have yarn search devices for automatic yarn search.
  • the work stations can have suction nozzles.
  • the textile machine can be designed as a spinning machine, in particular as a rotor spinning machine or air-jet spinning machine.
  • the workstations of the textile machine can have display means, such as in particular a signal lamp and / or a display, which are suitable for emitting an optical signal.
  • the textile machine can also have a central display means which is designed in particular to indicate workplaces at which a yarn break is present.
  • the textile machine can also have one or more loudspeakers which are designed to emit an acoustic signal.
  • each of the work stations can have a loudspeaker.
  • the single figure shows a schematic side view of a work station 1 of a textile machine according to the invention.
  • the work station 1 is designed as a spinning station of a rotor spinning machine.
  • fibers are usually compressed into a yarn 3 by the rotation of a spinning rotor 2.
  • the fibers are first fed to the work station 1 in the form of a sliver 4.
  • the sliver 4 is stored in a storage container 5.
  • the sliver 4 is broken up into the fiber components by at least one opening roller 6, which is usually reinforced with teeth on its surface. These are then fed to the spinning rotor 2.
  • the spun yarn 3 is drawn off by a pair of draw-off rollers 7 and wound onto a yarn bobbin 8.
  • the yarn 3 can be guided past a yarn sensor 9 which, for example, monitors the quality of the yarn 3 and, if necessary, registers a tearing of the yarn 3 or a yarn breakage.
  • the work station 1 has, in particular, a winding roller 10 for driving the yarn bobbin 8 with a winding roller drive 11.
  • the arrow drawn on the bobbin 8 indicates the winding direction of the bobbin 8.
  • the winding roller drive 11 is in particular independent of other work stations 1 of the textile machine and can therefore regulate the rotation of the yarn bobbin 8 individually.
  • a yarn end of the yarn 3 usually runs onto the yarn bobbin 8 and has to be found in order to continue the spinning process, and preferably to Spinning rotor 2 are guided.
  • the work station 1 has, for example, a yarn search device 12, which in particular comprises a suction nozzle 13.
  • this yarn search device 12 at least one automatic yarn search process can initially be carried out. For example, an attempt is made to suck in the end of the yarn by means of the suction nozzle 13. If the end of the yarn is not found, this can optionally be repeated up to a specified maximum number of automatic yarn search processes.
  • An unsuccessful automatic yarn search process can optionally be followed by an extended automatic yarn search process with changed parameters, in particular an increased suction power of the suction nozzle 13.
  • the priority for an extended automatic thread search process can possibly be reduced.
  • the workstation 1 can for example have a display means 14 which, in this example, is designed as a signal lamp.
  • the signal lamp can, for example, light up continuously or flash at the request of the operator.
  • the operator carries out a manually assisted yarn search process in which the yarn bobbin 8 is rotated by means of the bobbin roller drive 11 against the winding direction indicated by the arrow.
  • the operator can make an input, for example at an input terminal 15, which causes the winding roller drive 11 to rotate the yarn bobbin 8 accordingly.
  • a rotation speed of this rotation can, for example again be adjustable by an input.
  • the suction nozzle 13 can also be activated during the manually assisted yarn search process.
  • the workstation 1 has, for example, a controller 16 which is designed to control the elements of the workstation 1 accordingly.
  • the control 16 is connected to the winding roller drive 11, the display means 14, the input terminal 15 and the yarn search device 12.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Replacing, Conveying, And Pick-Finding For Filamentary Materials (AREA)
EP21154474.7A 2020-02-04 2021-02-01 Procédé pour l'opération d'un poste de travail d'une machine textile fabriquant des bobines Active EP3862306B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102020102793.1A DE102020102793A1 (de) 2020-02-04 2020-02-04 Verfahren zum Betreiben einer Arbeitsstelle einer Garnspulen herstellenden Textilmaschine

Publications (2)

Publication Number Publication Date
EP3862306A1 true EP3862306A1 (fr) 2021-08-11
EP3862306B1 EP3862306B1 (fr) 2024-04-03

Family

ID=74494751

Family Applications (1)

Application Number Title Priority Date Filing Date
EP21154474.7A Active EP3862306B1 (fr) 2020-02-04 2021-02-01 Procédé pour l'opération d'un poste de travail d'une machine textile fabriquant des bobines

Country Status (3)

Country Link
EP (1) EP3862306B1 (fr)
CN (1) CN113213275A (fr)
DE (1) DE102020102793A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010029631A1 (de) * 2009-06-04 2010-12-09 SSM Schärer Schweiter Mettler AG Umspulmaschine zum Umspulen von Garnen
EP3263499A1 (fr) * 2016-06-28 2018-01-03 Rieter Ingolstadt GmbH Procédé de fonctionnement d'un poste de travail et machine textile
JP2019123590A (ja) * 2018-01-16 2019-07-25 村田機械株式会社 糸巻取機

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4222377C2 (de) 1992-07-08 2002-06-27 Schlafhorst & Co W Verfahren und Vorrichtung zum Erfassen eines auf einer Kreuzspule angeordneten Fadenendes
CZ281245B6 (cs) 1995-03-14 1996-07-17 Maschinenfabrik Rieter Ag Způsob ustavování ústí vyhledávací hubice proti obvodu cívky a obslužné zařízení k provádění tohoto způsobu
DE19917971B4 (de) 1998-05-20 2009-11-19 Rieter Ingolstadt Gmbh Verfahren und Vorrichtung zum Warten einer Arbeitsstelle einer Textilmaschine mit Hilfe einer verfahrbaren Wartungsvorrichtung
DE102004041051B4 (de) 2003-10-22 2017-02-09 Rieter Ingolstadt Gmbh Intelligentes Störungsmanagement
DE102006026548A1 (de) 2006-06-08 2007-12-13 Oerlikon Textile Gmbh & Co. Kg Verfahren zum Betreiben einer Arbeitstelle einer Kreutzspulen herstellenden Textilmaschine
DE102015118987A1 (de) 2015-11-05 2017-05-11 Rieter Ingolstadt Gmbh Verfahren zum Betreiben einer Spinnmaschine mit einer vollautomatischen Anspinnvorrichtung sowie Spinnmaschine mit einer vollautomatischen Anspinnvorrichtung
DE102016112641A1 (de) 2016-07-11 2018-01-11 Rieter Ingolstadt Gmbh Spulstelle mit einer bewegbaren Deckeinheit

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010029631A1 (de) * 2009-06-04 2010-12-09 SSM Schärer Schweiter Mettler AG Umspulmaschine zum Umspulen von Garnen
EP3263499A1 (fr) * 2016-06-28 2018-01-03 Rieter Ingolstadt GmbH Procédé de fonctionnement d'un poste de travail et machine textile
JP2019123590A (ja) * 2018-01-16 2019-07-25 村田機械株式会社 糸巻取機

Also Published As

Publication number Publication date
DE102020102793A1 (de) 2021-08-05
CN113213275A (zh) 2021-08-06
EP3862306B1 (fr) 2024-04-03

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