EP4049956A1 - Procédé de fonctionnement d'une machine textile et machine textile - Google Patents

Procédé de fonctionnement d'une machine textile et machine textile Download PDF

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Publication number
EP4049956A1
EP4049956A1 EP22155987.5A EP22155987A EP4049956A1 EP 4049956 A1 EP4049956 A1 EP 4049956A1 EP 22155987 A EP22155987 A EP 22155987A EP 4049956 A1 EP4049956 A1 EP 4049956A1
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EP
European Patent Office
Prior art keywords
carried out
textile machine
time
work stations
work station
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
EP22155987.5A
Other languages
German (de)
English (en)
Other versions
EP4049956B1 (fr
Inventor
Sebastian Brandl
Mario Maleck
Robin Wein
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
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Maschinenfabrik Rieter AG filed Critical Maschinenfabrik Rieter AG
Publication of EP4049956A1 publication Critical patent/EP4049956A1/fr
Application granted granted Critical
Publication of EP4049956B1 publication Critical patent/EP4049956B1/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H69/00—Methods of, or devices for, interconnecting successive lengths of material; Knot-tying devices ;Control of the correct working of the interconnecting device
    • B65H69/06—Methods of, or devices for, interconnecting successive lengths of material; Knot-tying devices ;Control of the correct working of the interconnecting device by splicing
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H15/00—Piecing arrangements ; Automatic end-finding, e.g. by suction and reverse package rotation; Devices for temporarily storing yarn during piecing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H54/00—Winding, coiling, or depositing filamentary material
    • B65H54/70—Other constructional features of yarn-winding machines
    • B65H54/74—Driving arrangements
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H13/00—Other common constructional features, details or accessories
    • D01H13/32—Counting, measuring, recording or registering devices
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H4/00—Open-end spinning machines or arrangements for imparting twist to independently moving fibres separated from slivers; Piecing arrangements therefor; Covering endless core threads with fibres by open-end spinning techniques
    • D01H4/48—Piecing arrangements; Control therefor
    • 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 piecing a thread at a work station of a textile machine, in which several sub-steps are carried out one after the other at the work station to carry out the piecing process, with at least one sub-step being carried out independently of the other sub-steps in terms of time.
  • the invention also relates to a corresponding textile machine with a large number of similar work stations arranged next to one another on at least one longitudinal side of the textile machine and with at least one control unit.
  • Generic textile machines are designed either as spinning machines for producing a yarn or as winding machines, which wind around a yarn that has already been produced.
  • Textile machines have a large number of similar work stations arranged next to one another on one or two longitudinal sides of the textile machine.
  • the workplaces of the textile machines have numerous working elements for the production or handling of the yarn or thread, such as spinning devices, take-off devices and winding devices.
  • the workplaces have working bodies to resume regular operations in the event of an interruption, i.e. to carry out service operations such as piecing processes (piecing or splicing) and bobbin changes.
  • suction nozzles for finding a thread end, blowing nozzles for cleaning purposes or working elements for thread handling should be mentioned for this purpose.
  • the working organs require certain amounts of energy resources, i.e. electricity, compressed air or vacuum.
  • energy resources i.e. electricity, compressed air or vacuum.
  • a control unit allocates the required energy resources to the work stations as long as the total available energy resources are not exceeded.
  • requests from jobs that exceed the available energy resources are deferred.
  • an attachment process can usually only be carried out at one or two work stations at the same time.
  • An attachment process includes several sub-steps that are carried out one after the other at the workplace.
  • the DE 10 2016 106 107 A1 Proposes, based on this, to subdivide the service operations such as scheduling processes into partial sequences and accordingly to request and allocate the resources not for the entire service operation or the entire scheduling process, but only for the respective partial sequence.
  • a pending sub-sequence is then carried out independently of the other sub-sequences of the respective service operation when the energy resources required for the execution of this sub-sequence are available. Partial sequences can thus already be processed, even if not enough energy resources are available for the entire service operation. For example, during a piecing process, the thread search is carried out independently of the work station running up. As a result, the energy resources are better utilized and the service operation at the workplaces can be carried out more quickly overall.
  • the object of the present invention is to further improve the state of the art and to reduce unproductive downtimes at the work stations.
  • a method for piecing a thread at a work station of a textile machine several partial steps are carried out one after the other at the work station to carry out the piecing process. At least one sub-step is carried out independently of the other sub-steps in terms of time. It is proposed that the work station has at least one individually driven working element and at least one positioning drive for the at least one working element and that the at least one partial step carried out independently of time includes a home position movement of the at least one positioning drive.
  • a corresponding textile machine has a large number of similar work stations arranged next to one another on at least one longitudinal side of the textile machine, as well as at least one control unit.
  • the work stations each have at least one individually driven working element and at least one positioning drive for the at least one working element.
  • the at least one control unit is now designed to operate the textile machine according to the method.
  • a piecing process is understood to mean both a piecing process on a spinning machine and a splicing process on a spinning machine or a winding machine. Furthermore, a piecing process includes both piecing after a thread breakage and piecing on an empty tube with a template thread.
  • the working elements for the production and handling of the thread were generally driven centrally.
  • service operations such as piecing processes were carried out either manually by an operator or by a maintenance device that could be moved along the work stations.
  • the work stations have at least one individually driven work element for producing and/or handling the thread and/or for carrying out a piecing process, which is driven by a positioning drive.
  • the at least one working element can be moved in a targeted manner relative to the work location in order to carry out the relevant service operation or the relevant partial step of the attachment process and can be positioned exactly for this purpose.
  • the positioning drive must first be moved to its home position.
  • the home position movement of the at least one positioning drive is carried out independently of the other partial steps of the piecing process.
  • the present invention has recognized that the home position movement can be carried out as a separate sub-step in terms of time from the entire rest of the piecing process, before the working element is actually required for the piecing process.
  • the cycle time of the actual attachment process can be significantly reduced by "separating" the home position travel from time to time. For example, a total time saving of approx. 6 - 8 seconds can be achieved by carrying out the home position run independently of the rest of the attachment process.
  • the home position movement can also be carried out in advance at a stationary work site before the work site is even intended for attachment. This is a significant advantage, especially when starting multiple jobs in bulk.
  • the work station has several individually driven working elements and several positioning drives for the several working elements, with the at least one partial step carried out independently in terms of time comprising a home position movement of several positioning drives, preferably all positioning drives, of the working station.
  • the work station is designed as an at least partially self-sufficient work station, which can carry out an attachment process independently without a mobile maintenance device.
  • the home position travels of the several positioning drives of the job can be carried out simultaneously since only very little electrical energy is required for this.
  • the textile machine is designed as an open-end spinning machine and a further partial step, which is carried out independently of time, comprises the preparation of a tuft at the relevant work station.
  • the fiber tuft preparation includes targeted preparation of the end of the sliver fed to the spinning station, in which the feed roller is driven with a specific movement profile and the opening roller is briefly accelerated in order to comb out the fiber tuft.
  • This partial step can also be separated out from the entire piecing process, so to speak, so that a time saving of about 5-6 seconds can then be achieved in the remaining piecing process carried out later.
  • the home position movement of the at least one positioning drive is carried out as the first partial step of the piecing process. Waiting times during the piecing process or while carrying out the remaining partial steps of the piecing process due to the necessary home position movement of the at least one positioning drive can be avoided in this way.
  • the preparation of the tuft is carried out as the first partial step of the piecing process.
  • waiting times can be avoided during the later piecing process or during the implementation of the remaining sub-steps of the piecing process.
  • the at least one partial step that is carried out independently of time is already carried out when the work station is switched off.
  • at least one positioning drive of the work station can already be moved to its home position when the work station is switched off during pneumatic rotor cleaning.
  • the relevant partial step carried out independently of time is carried out at at least one further work station.
  • the home position movement of the at least one positioning drive and/or the tuft preparation can already be carried out at another work station. If the additional work station then starts the actual or remaining piecing process or carries out the further partial steps of the piecing process, the cycle time of the remaining piecing process is significantly reduced. Since the first partial step, which is carried out independently of time, can already be carried out in parallel with a piecing process at another work station, a significant time saving can be achieved overall when piecing at several jobs.
  • the sub-step carried out independently of time is carried out simultaneously at several work stations.
  • Such mass preparation is performed, for example, when the machine For example, it was completely switched off overnight.
  • bulk scheduling is performed when a new production group is started.
  • only a few electrical resources are required for the home position run, so that this sub-step can be carried out at the same time at several work stations.
  • an enormous time advantage can be achieved. Only a few resources are required for the sliver preparation, so that it can also be carried out at several work stations at the same time.
  • the partial step which is carried out independently of time, is carried out simultaneously at all the work stations of a section in the case of a mass piecing of several work stations of the textile machine. This is advantageous, for example, when the work stations in a section are jointly supplied with electrical resources.
  • the sub-step which is carried out independently in terms of time, is carried out simultaneously at all workstations on at least one longitudinal side of the textile machine, preferably at all workstations on both longitudinal sides of the textile machine, in the event of mass piecing of several or all workstations on the textile machine.
  • This can opposite a method in which all sub-steps of the preparation cycle are carried out immediately one after the other, a particularly large time saving can be achieved.
  • the partial step that is carried out independently of time is carried out at several work stations with a time offset, preferably at regular time intervals.
  • a time offset preferably at regular time intervals.
  • the partial step that is carried out independently of time requires resources. Even if only very few resources are required overall for the sub-step in question, the resources available may not be sufficient if the sub-step is carried out simultaneously at many workplaces. Improved utilization of the resources can thus be achieved as a result of the time offset, and time can still be saved by separating out the at least one independently performed sub-step in terms of time.
  • FIG 1 shows a textile machine 1 in a schematic front view.
  • the textile machine 1 has a large number of work stations 2 arranged next to one another.
  • the work stations 2 are divided in a manner known per se into structural groups, the so-called sections 19, as symbolized by the bold border. In the present case, only the work stations 2 on a longitudinal side 20 of the textile machine 1 are visible.
  • textile machines 1 can also be designed as double-sided machines, in which work stations 2 are also arranged on the longitudinal side 20 opposite the longitudinal side 20 shown.
  • Each of the work stations 2 has several different components and by means of a positioning drive 22 (see Fig. 2 ) drivable working elements 3, with which a thread 12 can be produced or handled or a piecing process can be carried out.
  • the work stations 2 each have a feeding device 6 for feeding in a fiber material 11 , a delivery device 16 for the thread 12 and a winding device 9 , by means of which the thread 12 is wound onto a spool 10 .
  • the textile machine 1 is designed as a rotor spinning machine and accordingly has a feed roller 5 and an opening roller 4 as the feed device 6 .
  • the delivery device 16 is present as a spinning device 7 with a spinning rotor (see figure 2 ) educated.
  • the thread 12 produced is drawn off by means of a take-off device 8 the spinning device 7 or deducted from the delivery device 16 and fed to the winding device 9, where it is wound onto a spool 10.
  • the winding device 9 contains, as a working element 3, an oscillatingly driven thread guide 25, which is positioned by means of a positioning drive 22 (see Fig. 2 ) is drivable.
  • the textile machine 1 could also be designed as an air spinning machine or other spinning machine.
  • the feeding device 6 contains, for example, a drafting system (not shown).
  • the textile machine 1 could also be designed as a winding machine.
  • the delivery device 16 includes a pay-off spool (not shown).
  • the enumeration of the components and working bodies 3 is not to be understood as conclusive.
  • further components and working elements 3 for handling the thread 12, for connecting the thread 12, for cleaning the spinning device 7 or other components of the textile machine 1 or for other activities can be present.
  • the components and working elements 3 can, for example, be blowing nozzles, suction nozzles 21 (see 2 ) and moveable components.
  • Further working elements 3, which are driven by means of a positioning drive, are exemplified in figure 2 shown.
  • the components and working elements 3 require energy resources for their function, in particular compressed air, negative pressure and electricity, which are made available to them in different ways.
  • the vacuum is supplied via one or more vacuum channels 14 that extend along the work stations 2 and is acted upon by a vacuum source 15 .
  • Other components and working elements 3 are supplied with compressed air via a compressed air line 17 extending along the working points 2 and a compressed air source 18 .
  • a supply line for the supply of electrical current is provided (not shown).
  • the textile machine 1 has a control unit 13 which controls the processes on the textile machine 1 as a whole.
  • each workstation 2 also has a control unit 13 which controls the individual working elements 3 and is connected to the central control unit 13 of the textile machine. Additionally or alternatively, a control unit per section 19 can also be present.
  • the work stations 2 of the textile machine 1 are preferably designed to be at least partially self-sufficient. This means that each work station 2 can carry out at least one piecing process independently.
  • the work stations 2 are designed to be fully self-sufficient, they have several individually driven components and several working elements 3 driven by a positioning drive 22 (see figure two) for the production of the thread 12. It is also possible on such a textile machine 1 equipped with self-sufficient work stations 2 To subdivide the jobs 2 into different production groups 28 regardless of their structure in sections 19 .
  • the jobs 2 belonging to a production group 28 are connected in that they produce the same product or the same thread 12 .
  • figure 2 shows a work station 2 of a textile machine 1 in a schematic side view.
  • the work station 2 is designed as a work station 2 of a rotor spinning machine.
  • the textile machine 1 could also be another spinning machine or a winding machine.
  • the working elements 3 of the work station 2 can all be driven individually by means of a positioning drive 22 .
  • the described components of the work station 2 can be moved both standing and by means of a drive (not designated) relative to the textile machine 1 or across from workplace 2.
  • the present invention relates exclusively to the working elements 3 driven by means of a positioning drive 22.
  • a thread end on the bobbin side must be grasped and made available and connected to a thread end on the delivery side or fed to the delivery device 16 . This is done using the working elements 3 driven by a positioning drive 22.
  • the piecing process and the function of the working elements 3 are explained below using the example of a work station 2 of a rotor spinning machine:
  • the suction nozzle 21 is in this case transferred by means of its positioning drive 22 from a basic position to a thread-finding position. Furthermore, the shut-off valve 27 is opened by means of its positioning drive 22 in order to generate suction in the suction nozzle 21 .
  • the thread guide 25 is moved by means of its positioning drive 22, e.g. to an edge of its traversing area. As soon as the search for the thread is complete, the shut-off valve 27 is closed again by means of the positioning drive 22 . If the thread end is sucked up into the suction nozzle 21, it is gripped there by the thread catcher 26 and is either returned directly to the spinning device 7 or presented to the delivery device 16 or transferred to another working element 3 or another component of the working station 3 .
  • the thread catcher 26 is transferred by means of its positioning drive 22 from its basic position shown in solid lines into the feeding position shown in dashed lines.
  • the movement of the thread catcher 26 simultaneously inserts the thread 12 into the oscillating measuring head 24 .
  • the measuring head 24 is moved into a thread take-over position by means of its positioning drive 22 .
  • measuring head 24 via a blowing unit (not shown here, only the connection to the compressed air line 17 is shown here).
  • the thread guide 25 is then moved in a time-controlled manner into a thread take-over position in order to receive the newly attached thread 12 . After the attachment, the thread 12 then resumes its original course, shown here, at the work station 2 .
  • the positioning drives 22 In order to determine their position, the positioning drives 22 must carry out a home position run for the attachment process. According to the prior art, the positioning drives 22 have carried out their home position travel as soon as a piecing process should be carried out directly at the relevant work station 2 . According to the invention, it is now provided that at least one, preferably several or also all positioning drives 22 carry out the home position movement independently of the other partial steps of the piecing process, i.e. to decouple the substep of the home position movement from the other substeps of the piecing process in terms of time. In this way, at least some positioning drives 22 can be moved to the home position before this would actually be necessary at the relevant work station 2 .
  • the home position travel can also be carried out at the same time as other sub-steps at other work stations 2 or else at the same time as the home position travel at other work stations 2 .
  • a piecing process can be carried out more quickly as a result, which is particularly noticeable when piecing is to be carried out at several work stations 2 at the same time or in quick succession.
  • the tuft preparation is carried out, for example, at the work stations 2 of a rotor spinning machine as part of the piecing process in order to always produce the same conditions for piecing.
  • the feed roller 5 is driven according to a predetermined profile, with the tuft being combed out for a predetermined period of time. Then, by turning back the feed roller 5 for a short time, the tuft is pulled back by a predetermined distance and thereby withdrawn from the action of the opening roller 4 .
  • This sub-step can also be decoupled in terms of time from the other sub-steps of the piecing process and can be carried out independently of them in terms of time.
  • another work station 2 can already carry out the home position movement of one or more of its positioning drives 22 and/or the tuft preparation.
  • the rest of the attachment process at the other work station 2 can be carried out in a significantly shorter time and overall a significant time saving can be achieved.
  • a total time saving of up to 15 seconds can be achieved at the second work station during the piecing process if, for example, the home position movement and the tuft preparation have already been carried out ahead of time. It is also conceivable to carry out the home position movement and the tuft preparation at the same time.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
EP22155987.5A 2021-02-26 2022-02-09 Procédé de fonctionnement d'une machine textile et machine textile Active EP4049956B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102021104676.9A DE102021104676A1 (de) 2021-02-26 2021-02-26 Verfahren zum Betreiben einer Textilmaschine und Textilmaschine

Publications (2)

Publication Number Publication Date
EP4049956A1 true EP4049956A1 (fr) 2022-08-31
EP4049956B1 EP4049956B1 (fr) 2024-07-24

Family

ID=82595772

Family Applications (1)

Application Number Title Priority Date Filing Date
EP22155987.5A Active EP4049956B1 (fr) 2021-02-26 2022-02-09 Procédé de fonctionnement d'une machine textile et machine textile

Country Status (3)

Country Link
EP (1) EP4049956B1 (fr)
CN (1) CN114959969A (fr)
DE (1) DE102021104676A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4404538C1 (de) * 1994-02-12 1995-04-27 Rieter Ingolstadt Spinnerei Verfahren und Vorrichtung zum Anspinnen einer Offenend-Spinnvorrichtung
DE102014003329A1 (de) * 2014-03-08 2015-09-10 Saurer Germany Gmbh & Co. Kg Verfahren und Vorrichtung zum Betreiben einer Offenend-Rotorspinnmaschine
DE102015010844A1 (de) * 2015-08-19 2017-02-23 Saurer Germany Gmbh & Co. Kg Verfahren zum Verbinden eines Ober- und eines Unterfadens an einer Spulstelle einer Spulmaschine und Spulstelle einer Spulmaschine
DE102016106107A1 (de) 2016-04-04 2017-10-05 Rieter Ingolstadt Gmbh Verfahren zum Betreiben einer Textilmaschine und Textilmaschine
EP3604642A1 (fr) * 2018-08-01 2020-02-05 Maschinenfabrik Rieter AG Procédé de fonctionnement d'une machine textile et machine textile

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202005022126U1 (de) 2005-06-04 2014-06-17 Rieter Ingolstadt Gmbh Textilmaschine mit Reinigungsvorrichtung

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4404538C1 (de) * 1994-02-12 1995-04-27 Rieter Ingolstadt Spinnerei Verfahren und Vorrichtung zum Anspinnen einer Offenend-Spinnvorrichtung
DE102014003329A1 (de) * 2014-03-08 2015-09-10 Saurer Germany Gmbh & Co. Kg Verfahren und Vorrichtung zum Betreiben einer Offenend-Rotorspinnmaschine
DE102015010844A1 (de) * 2015-08-19 2017-02-23 Saurer Germany Gmbh & Co. Kg Verfahren zum Verbinden eines Ober- und eines Unterfadens an einer Spulstelle einer Spulmaschine und Spulstelle einer Spulmaschine
DE102016106107A1 (de) 2016-04-04 2017-10-05 Rieter Ingolstadt Gmbh Verfahren zum Betreiben einer Textilmaschine und Textilmaschine
EP3604642A1 (fr) * 2018-08-01 2020-02-05 Maschinenfabrik Rieter AG Procédé de fonctionnement d'une machine textile et machine textile

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Publication number Publication date
CN114959969A (zh) 2022-08-30
DE102021104676A1 (de) 2022-09-01
EP4049956B1 (fr) 2024-07-24

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