EP4049956B1 - Verfahren zum betreiben einer textilmaschine und textilmaschine - Google Patents

Verfahren zum betreiben einer textilmaschine und textilmaschine Download PDF

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Publication number
EP4049956B1
EP4049956B1 EP22155987.5A EP22155987A EP4049956B1 EP 4049956 B1 EP4049956 B1 EP 4049956B1 EP 22155987 A EP22155987 A EP 22155987A EP 4049956 B1 EP4049956 B1 EP 4049956B1
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EP
European Patent Office
Prior art keywords
carried out
sub
textile machine
time
workstations
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.)
Active
Application number
EP22155987.5A
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German (de)
English (en)
French (fr)
Other versions
EP4049956A1 (de
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
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Publication of EP4049956A1 publication Critical patent/EP4049956A1/de
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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
    • 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
    • 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
    • D01H15/00—Piecing arrangements ; Automatic end-finding, e.g. by suction and reverse package rotation; Devices for temporarily storing yarn during piecing
    • 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 attaching 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 attachment process, with at least one sub-step being carried out independently of the other sub-steps.
  • 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 long side of the textile machine and with at least one control unit.
  • Textile machines of this type are designed either as spinning machines for producing yarn or as winding machines, which rewind 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 long sides of the textile machine.
  • the work stations of textile machines have numerous work elements for producing or handling the yarn or thread, such as spinning devices, take-off devices and winding devices.
  • the work stations also have work elements to resume regular operations in the event of an interruption, i.e. to carry out service operations such as piecing (spinning or splicing) and changing bobbins. Examples of these include suction nozzles for finding the end of a thread, blow nozzles for cleaning purposes or work elements for thread handling.
  • the working organs require certain amounts of energy resources, i.e. electrical power, compressed air or negative pressure.
  • energy resources i.e. electrical power, compressed air or negative pressure.
  • a control unit allocates the requested energy resources to the workstations as long as the total energy resources available are not exceeded. Requests from workstations which exceed the available energy resources are put on hold. This means that a piecing process can usually only be carried out at one or two workstations at the same time. At the other workstations, this results in very long waiting times until a piecing process can be carried out and production can resume. This is particularly disadvantageous when starting up the textile machine or a production group of the textile machine where several workstations are waiting to be piecing.
  • a piecing process includes several sub-steps that are carried out one after the other at the work site.
  • EN 10 2016 106 107 A1 suggests dividing the service operations such as piecing processes into sub-sequences and requesting and allocating resources not for the entire service operation or the entire piecing process, but only for the respective sub-sequence.
  • a pending sub-sequence is carried out independently of the other sub-sequences of the respective service operation if the energy resource required to carry it out is available for this sub-sequence.
  • Sub-sequences can therefore already be processed even if there are not yet enough energy resources available for the entire service operation.
  • the thread search is carried out independently of the start-up of the work station. This means that the Energy resources are better utilized and service operations at work sites can be carried out more quickly overall.
  • the EN 10 2014 003 329 A1 shows a workstation of a textile machine, at which a suction nozzle is arranged so that it can pivot.
  • the suction nozzle can pivot between a thread take-up position, in which the mouth of the suction nozzle is positioned in the area of the cross-wound bobbin held in a bobbin frame, a thread transfer position in the area of the spinning device and a rest position. During the spinning process, the suction nozzle is positioned in the rest position.
  • the EN 10 2015 010 844 A1 also shows a workstation of a winding machine with a pivoting suction nozzle and a pivoting gripper tube.
  • the suction nozzle is positioned with its mouth in the area of the cross-wound bobbin.
  • the suction nozzle is also moved a little further.
  • the distance between the mouth of the suction nozzle and the surface of the cross-wound bobbin therefore always remains within a predetermined range, so that no time is lost in pivoting the suction nozzle up.
  • the gripper tube is positioned in a lower position and pivots to an area below the thread tensioner to grasp the bobbin thread.
  • the object of the present invention is to further improve the state of the art and to reduce unproductive downtimes at work stations.
  • a method for attaching a thread at a work station of a textile machine several sub-steps are carried out one after the other at the work station to carry out the attachment process. At least one sub-step is carried out independently of the other sub-steps. 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.
  • the at least one positioning drive carries out a home position travel for the attachment process in order to determine its position.
  • the at least one sub-step carried out independently of the time comprises the home position travel of the at least one positioning drive.
  • a corresponding textile machine has a plurality of similar work stations arranged next to one another on at least one long side of the textile machine, as well as at least one control unit.
  • the work stations each have at least one individually driven work element and at least one positioning drive for the at least one work 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 break and piecing on an empty tube with a feed thread.
  • the working elements for producing and handling the thread were usually centrally driven.
  • service operations such as piecing were either carried out manually by an operator or by a maintenance device that could be moved along the workstations.
  • 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 work element can thereby be moved in a targeted manner relative to the work station in order to carry out the relevant service operation or the relevant sub-step of the piecing process and can be positioned precisely for this purpose.
  • the positioning drive In order to carry out the piecing process, the positioning drive must first be moved to its basic position.
  • the home position travel of at least one positioning drive is now carried out independently of the other sub-steps of the attachment process.
  • the present invention has recognized that the home position travel can be carried out as a separate sub-step, decoupled from the entire rest of the attachment process, before the working element is actually needed for the attachment process.
  • the cycle time of the actual attachment process can be significantly reduced by "separating" the home position travel. For example, by carrying out the home position travel independently of the rest of the attachment process, a total time saving of around 6 - 8 seconds can be achieved.
  • the home position travel can also be carried out in preparation at a stationary work station before the work station is even intended for attachment. This brings with it a considerable advantage, particularly in the case of a mass start of several work stations.
  • the workstation has several individually driven working elements and several positioning drives for the several working elements, wherein the at least one time-independently carried out Sub-step includes a home position travel of several positioning drives, preferably all positioning drives, of the work 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 movable maintenance device.
  • the home position travels of the several positioning drives of the work station can be carried out simultaneously, since only very little electrical energy is required for this. It is of course also conceivable to carry out the home position travels of the several positioning drives of a work station with a small time offset from one another.
  • the textile machine is designed as an open-end spinning machine and a further sub-step carried out independently of time includes the preparation of a fiber beard at the relevant work station.
  • the fiber beard preparation includes a targeted preparation of the end of the fiber 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 beard.
  • This sub-step can also be separated out from the entire piecing process, so to speak, which then results in a time saving of approx. 5 - 6 seconds in the remaining piecing process carried out later.
  • the home position travel of the at least one positioning drive is carried out as the first sub-step of the attachment process. Waiting times during the attachment process or during the execution of the other sub-steps of the attachment process due to the required home position travel of the at least one positioning drive can be avoided in this way.
  • the preparation of the fiber beard is carried out as the first step in the piecing process.
  • waiting times during the subsequent piecing process or during the implementation of the other steps in the piecing process can be avoided.
  • the at least one sub-step carried out independently of time is already carried out when the work station is shut down.
  • the home position travel of at least one positioning drive of the work station can already take place when the work station is shut down during pneumatic rotor cleaning.
  • the relevant time-independent sub-step is carried out at at least one other work station.
  • the home position travel of the at least one positioning drive and/or the fiber beard preparation can already be carried out at another work station.
  • the other work station then starts the actual or remaining piecing process or carries out the other sub-steps of the piecing process, the cycle time of the remaining piecing process is significantly shortened. Since the first sub-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 work stations.
  • the time-independently performed sub-step is carried out at several work stations simultaneously.
  • Such mass piecing is carried out, for example, if the machine was completely switched off overnight.
  • mass piecing is carried out when a new production group is started.
  • only a few electrical resources are required for the home position travel, so that this sub-step can be carried out in parallel at several work stations at the same time.
  • mass piecing an enormous time advantage can be achieved. Only a few resources are also required for the fiber sliver preparation, so that this can also be carried out at several work stations at the same time.
  • the time-independently performed sub-step is carried out simultaneously at all workstations of at least one longitudinal side of the textile machine, preferably at all workstations of both Long sides of the textile machine. This allows a particularly large time saving to be achieved compared to a process in which all sub-steps of the preparation cycle are carried out immediately one after the other.
  • the sub-step that is carried out independently of time is carried out at several workstations at different times, preferably at regular time intervals.
  • the sub-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 workstations.
  • the temporal offset can achieve improved utilization of resources and yet time can be saved by separating out the at least one sub-step that is carried out independently.
  • Figure 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 known manner into structural groups, the so-called sections 19, as symbolized by the thick border. In the present case, only the work stations 2 on one long side 20 of the textile machine 1 are visible.
  • Textile machines 1 can, however, also be designed as double-sided machines, in which work stations 2 are also arranged on the long side 20 opposite the long side 20 shown.
  • Each of the workstations 2 has several different components and is connected by 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 in the present case each have a feed device 6 for feeding 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 a feed device 6.
  • the delivery device 16 is presently as a spinning device 7 with a spinning rotor (see Figure 2 ).
  • the produced thread 12 is here drawn off from the spinning device 7 or from the delivery device 16 by means of a draw-off device 8 and fed to the winding device 9, where it is wound onto a bobbin 10.
  • the winding device 9 contains as working element 3 an oscillatingly driven thread guide 25, which is positioned by means of a positioning drive 22 (see Fig.2 ).
  • the textile machine 1 could also be designed as an air spinning machine or other spinning machine.
  • the feed device 6 includes, for example, a drafting device (not shown).
  • the textile machine 1 could also be designed as a winding machine.
  • the delivery device 16 includes a pay-off bobbin (not shown).
  • components and working elements 3 are not intended to be exhaustive.
  • further components and working elements 3 can be present 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.
  • the components and working elements 3 can be, for example, blow nozzles, suction nozzles 21 (see. Fig.2 ) and movable components.
  • Other working elements 3, which are driven by a positioning drive, are shown by way of example in Figure 2 shown.
  • the components and working elements 3 require energy resources to function, in particular compressed air, negative pressure and electrical current, which are made available to them in different ways.
  • the negative pressure is supplied via one or more negative pressure channels 14 extending along the work stations 2, which are acted upon by a negative pressure source 15.
  • Other components and working elements 3 are supplied with compressed air via a compressed air line 17 extending along the work stations 2 and a compressed air source 18.
  • a supply line for the supply of electrical power 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 work station 2 also has a control unit 13 which controls the individual work elements 3 and is connected to the central control unit 13 of the textile machine. Additionally or alternatively, there can also be one control unit per section 19.
  • the work stations 2 of the textile machine 1 are 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 autonomous, they have several individually driven components as well as several working elements 3 driven by a positioning drive 22 (see figure two) for producing the thread 12.
  • a positioning drive 22 for producing the thread 12.
  • the work stations 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.
  • a suction nozzle 21, a shut-off valve 27, a thread catcher 26 and an adjustable measuring head 24 are also shown as working elements 3.
  • 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 both stationary and movable by means of a drive (not designated) relative to the textile machine 1 or relative to the work station 2.
  • the present invention relates exclusively to the working elements 3 driven by means of a positioning drive 22.
  • a thread end on the spool 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 with the help of 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: After a thread break, the spool-side thread end that has run onto the surface of the spool 10 must first be searched for using the suction nozzle 21. The suction nozzle 21 is moved from a basic position to a thread search position using its positioning drive 22.
  • the shut-off valve 27 is opened using its positioning drive 22.
  • the thread guide 25 is moved to one edge of its traversing area, for example, using its positioning drive 22.
  • the shut-off valve 27 is closed again using the positioning drive 22.
  • the movement of the thread catcher 26 simultaneously inserts the thread 12 into the oscillating measuring head 24.
  • the measuring head 24 is moved to a thread take-over position using its positioning drive 22.
  • the measuring head 24 has a blower unit (not shown here, only the connection to the compressed air line 17 is shown here).
  • the thread guide 25 is then moved to a thread take-over position in a time-controlled manner in order to pick up the newly attached thread 12. After attachment, the thread 12 then returns to its original course at the work station 2, as shown here.
  • the positioning drives 22 must carry out a home position travel for the attachment process in order to determine their position. According to the state of the art, the positioning drives 22 have carried out their home position travel as soon as an attachment process should be carried out immediately at the relevant work station 2. According to the invention, it is now provided that the home position travel of at least one, preferably several or even all positioning drives 22 is carried out independently of the other partial steps of the attachment process, thus decouple the partial step of the home position travel from the other partial steps of the attachment process.
  • the home position travel can thus be carried out at least for some positioning drives 22 before this would actually be necessary at the relevant work station 2.
  • the home position travel can also be carried out in parallel with other partial steps at other work stations 2 or in parallel with the home position travel at other work stations 2. This means that an attachment process can be carried out more quickly overall, which is particularly noticeable when attachment is to be carried out at several work stations 2 simultaneously or in quick succession.
  • Fiber beard 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 create the same conditions for piecing.
  • the feed roller 5 is driven according to a predetermined profile, whereby the fiber beard is combed out for a predetermined period of time.
  • the fiber beard is then retracted by a predetermined distance by briefly turning the feed roller 5 back, thereby removing it from the effect of the opening roller 4.
  • This sub-step can also be separated from the other sub-steps of the piecing process and carried out independently of them.
  • a first work station 2 has started a piecing process
  • another work station 2 can already carry out the home position travel of one or more of its positioning drives 22 and/or the fiber beard preparation.
  • the remaining piecing process at the other work station 2 can thus be carried out in a much shorter time and a considerable time saving can be achieved overall.
  • 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 travel and the fiber beard preparation are carried out early. It is also conceivable to carry out the home position travel and the fiber beard 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 Verfahren zum betreiben einer textilmaschine und textilmaschine Active EP4049956B1 (de)

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 EP4049956A1 (de) 2022-08-31
EP4049956B1 true EP4049956B1 (de) 2024-07-24

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Application Number Title Priority Date Filing Date
EP22155987.5A Active EP4049956B1 (de) 2021-02-26 2022-02-09 Verfahren zum betreiben einer textilmaschine und textilmaschine

Country Status (3)

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

Family Cites Families (6)

* 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
DE202005022126U1 (de) 2005-06-04 2014-06-17 Rieter Ingolstadt Gmbh Textilmaschine mit Reinigungsvorrichtung
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
DE102018118654A1 (de) * 2018-08-01 2020-02-06 Maschinenfabrik Rieter Ag Verfahren zum Betreiben einer Textilmaschine und Textilmaschine

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DE102021104676A1 (de) 2022-09-01
EP4049956A1 (de) 2022-08-31
CN114959969A (zh) 2022-08-30

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