EP4303349A1 - Procédé de fonctionnement d'un poste de filage d'un métier à filer et métier à filer - Google Patents

Procédé de fonctionnement d'un poste de filage d'un métier à filer et métier à filer Download PDF

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Publication number
EP4303349A1
EP4303349A1 EP23180315.6A EP23180315A EP4303349A1 EP 4303349 A1 EP4303349 A1 EP 4303349A1 EP 23180315 A EP23180315 A EP 23180315A EP 4303349 A1 EP4303349 A1 EP 4303349A1
Authority
EP
European Patent Office
Prior art keywords
spinning
opening
opening roller
driven
spinning 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.)
Pending
Application number
EP23180315.6A
Other languages
German (de)
English (en)
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.)
Maschinenfabrik 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 EP4303349A1 publication Critical patent/EP4303349A1/fr
Pending legal-status Critical Current

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Classifications

    • 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
    • D01H4/30—Arrangements for separating slivers into fibres; Orienting or straightening fibres, e.g. using guide-rolls
    • D01H4/36—Arrangements for separating slivers into fibres; Orienting or straightening fibres, e.g. using guide-rolls with means for taking away impurities
    • 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
    • D01H4/42—Control of driving or stopping

Definitions

  • the present invention relates to a method for operating a spinning unit of a spinning machine, in which a fiber material is dissolved into individual fibers by means of an opening device and the individual fibers are spun into a yarn using a spinning device, the opening device being rotatably mounted in an opening housing and drivable by means of an individual drive Opening roller includes, wherein the spinning device is connected to a vacuum channel of the spinning machine and is subjected to negative pressure and wherein the opening housing is connected to the spinning device via a feed channel.
  • Opening rollers are known in various designs in the prior art and serve to break up a fiber material presented to the spinning device in the form of a coherent sliver into loose individual fibers. During open-end spinning, only individual fibers can be processed and placed on an open end of the yarn.
  • the rotatably driven opening rollers are provided with a set that combs out the individual fibers from the sliver and forwards them to a feed channel, from where the individual fibers are fed to the spinning device.
  • fiber accumulations can occur on the opening roller, which become stuck in various places between the rotating opening roller and the walls of the opening roller housing surrounding the opening roller. This can slow down the movement of the opening roller and lead to a complete blocking of the opening roller.
  • the DE 34 17 567 A1 proposes to introduce an additional air stream into the opening roller housing, which blows the fibers back into the area of the clothing.
  • opening roller is driven there together with the other opening rollers by a central drive via a machine-long tangential belt.
  • Such spinning machines usually have a maintenance device that can be moved along the workstations and is often also used to clean the workstations.
  • individually driven opening rollers are mainly used, each of which has its own drive motor.
  • the object of the present invention is to propose a method for operating a spinning station of a spinning machine and a corresponding spinning machine, which avoids fiber accumulations and blockages on an individually driven opening roller.
  • the opening device contains an opening roller which is rotatably mounted in an opening housing and can be driven by means of an individual drive.
  • the spinning device is connected to a vacuum channel of the spinning machine and is subjected to negative pressure.
  • the opening housing is connected to the spinning device via a feed channel.
  • the method proposes that when the spinning station is at a standstill, the opening roller is activated at least once by means of its individual drive is driven briefly and then stopped again.
  • the opening roller is driven at a minimum speed by means of its individual drive.
  • the minimum speed is a reduced speed compared to the operating speed of the opening roller, with which the opening roller can just be kept rotating.
  • the present invention has discovered that fibers that are particularly stuck to the clothing of the opening roller can be loosened by setting an individually driven opening roller in motion just once. This is also possible if the opening roller is operated at a minimum speed that is greatly reduced compared to its operating speed while the spinning station is at a standstill.
  • Fibers adhering to the opening roller can also be loosened before the fiber accumulations lead to jamming.
  • fibers in the area of the dirt separation opening can be detached from the opening roller by the effect of gravity and possibly acting centrifugal forces and removed via the dirt separation opening.
  • the fibers can be loosened by exposing the fibers to a suction flow in the area of the feed channel, which connects the opening housing to the spinning device, whereby the fibers are also loosened become. This effectively prevents the opening roller from braking or blocking.
  • the same advantages can also be achieved with a spinning machine with a large number of spinning stations arranged next to one another, each of which has a dissolving device for dissolving a fiber material into individual fibers and a spinning device for spinning the individual fibers into a yarn.
  • the opening device has an opening roller which is rotatably mounted in an opening housing and can be driven by means of an individual drive, the spinning device being connected to a vacuum channel of the spinning machine and can be subjected to negative pressure and the opening housing being connected to the spinning device via a feed channel.
  • the spinning machine has a control unit for carrying out the method according to one of the preceding claims.
  • the control unit can be a control unit of the spinning station or a central control unit of the spinning machine.
  • the method can also be carried out in cooperation between two or more control units. It is particularly advantageous that no additional design measures are required, so that the spinning machine can be designed cost-effectively.
  • the opening roller is driven briefly and stopped again several times at predetermined time intervals. This is particularly advantageous when the spinning station is stopped for a longer period of time in order to avoid large accumulations of fibers.
  • the time intervals are set in a control unit of the spinning station and/or the spinning machine.
  • the opening roller can be driven at predetermined time intervals, the time intervals being adjustable in a control unit of the spinning station and/or the spinning machine.
  • the spinning station can thereby dissolve or prevent any fiber accumulations that may build up independently without operating personnel and without a movable maintenance device.
  • the time intervals are set in an application-specific manner depending on the fiber material used or, in the case of the spinning machine, can be stored in an application-specific manner depending on the fiber material used in the control unit and/or in a system control system with an article management system.
  • the time intervals are set in an application-specific manner depending on the fiber material used or, in the case of the spinning machine, can be stored in an application-specific manner depending on the fiber material used in the control unit and/or in a system control system with an article management system.
  • the opening roller is additionally cleaned by means of a blown air stream, in particular a blown air stream from a blowing nozzle belonging to the spinning unit.
  • the spinning units each have their own blowing nozzle for cleaning the opening roller.
  • blowing nozzle opens in the area of the dirt separation opening in order to support the removal of the loosened fibers.
  • FIG. 1 shows a spinning machine 1 in a schematic front view as an overview.
  • the spinning machine 1 has, in a manner known per se, a plurality of spinning stations 2 arranged next to one another, each of which is arranged between two frames 3 of the spinning machine 1. For reasons of clarity, only two spinning stations 2 are designated here and their individual components are labeled.
  • Each of the spinning stations 2 has a dissolving device 4 for dissolving something fed to it Fiber material 5 into individual fibers 6 (see Fig. 2 ) on.
  • the individual fibers 6 are fed to a spinning device 7, in which they are spun into a yarn 8.
  • the spun yarn 8 is then withdrawn from the spinning device 7 and fed to a winding device 10, where it is wound onto a spool 11.
  • the spinning machine 1 has a central control unit 9.
  • the spinning stations 2 each have their own spinning station control unit 9, which is connected to the central control unit of the spinning machine 1, as symbolized by the dotted lines.
  • the spinning machine 1 can also have a maintenance device 22 that can be moved along the spinning stations 2.
  • This also has a control unit 9, which is connected to the central control unit 9 of the spinning machine 1, as also indicated by a dotted line.
  • FIG. 2 shows a spinning station of a spinning machine 1 in a schematic, partially sectioned side view.
  • the spinning machine 1 is designed here as a rotor spinning machine.
  • a fiber material 5 is fed to the spinning station 2.
  • the spinning station 2 has a feed roller 16, which feeds the fiber material 5 to the opening roller 15 of the opening device 4, which is rotatably arranged in an opening housing 13.
  • the opening roller 15 is driven by an individual drive 14.
  • the fiber material 5 is dissolved by the opening roller 15 into individual fibers 6, which are then fed to the spinning device 7 via a feed channel 18.
  • the feed channel 18 connects the opening housing 13 with the spinning device 7.
  • the spinning device 7 contains a spinning rotor 12 arranged in a vacuum-pressurized housing (not designated).
  • the spinning device 7, more precisely, the housing is connected to a vacuum channel 17 for this purpose.
  • the opening roller is briefly driven and stopped again at least once, preferably several times, by means of its individual drive 14.
  • the individual drive 14 of the opening roller 15 is connected to the control unit 9 of the spinning unit 2 for tax purposes.
  • the control unit 9 can control the multiple driving of the opening roller 15 at predetermined time intervals.
  • the time intervals can be set, for example depending on an application on the spinning station 2, in the control unit 9 of the spinning station 2 or also in the central control unit 9 of the spinning machine 1.
  • permanent driving at a speed that is reduced compared to the operating speed of the opening roller can also be provided while the spinning station is at a standstill. In this way, larger fiber accumulations, which can subsequently lead to blockages in the opening roller, can be avoided and the smooth restart of the spinning station 2 can be ensured. This is explained below using the Figures 3 and 4 explained in more detail.
  • FIG 3 shows a schematic, partially sectioned front view of a spinning station with an opening device 4 according to a first embodiment.
  • the feeding of the fiber material 5 by means of the feed roller 16 is shown.
  • the fiber material 5 is dissolved into the individual fibers 6 by means of a set 20 of the opening roller 15.
  • the individual fibers 6 are delivered to the feed channel 18 by means of the clothing 20, from where they reach the spinning device 7 through the effect of the negative pressure prevailing in the spinning device 7.
  • the spinning device 7 is in the present case designed as a rotor spinning device and contains a spinning rotor 12 as a spinning element.
  • the opening roller 15 is driven briefly at least once, but preferably several times, while the spinning station 2 is at a standstill, the formation of fiber accumulations can be effectively avoided.
  • the short-term driving can prevent individual fibers 6 from getting stuck on the clothing 20 and individual fibers 6 that are already adhering be detached from the set 20 again.
  • the individual fibers are preferably detached from the clothing 20 by the effect of gravity in the area of the dirt separation opening 23 and can be removed via the dirt separation opening 23.
  • individual fibers 6 in the area of the feed channel 18 can be exposed to the effect of the negative pressure present there, whereby they are detached from the clothing and can be discharged via the feed channel 18.
  • Figure 4 shows a schematic, partially sectioned front view of a spinning station 2 with an opening device 4 according to a second embodiment.
  • a blowing nozzle 19 belonging to the spinning station is arranged at the spinning station 2 shown here for cleaning the opening roller 15.
  • the blowing nozzle 19 is connected to a compressed air supply, not shown here, and can be actuated by means of a valve 21.
  • the blowing nozzle 19 is preferably arranged shortly in front of the dirt separation opening with respect to the direction of rotation of the opening roller 15.
  • the spinning device 7 is designed as a rotor spinning device with a spinning rotor 12.
  • the invention can also be used on all other spinning machines 1, the spinning stations 2 of which have individually driven opening rollers 15.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
EP23180315.6A 2022-06-23 2023-06-20 Procédé de fonctionnement d'un poste de filage d'un métier à filer et métier à filer Pending EP4303349A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE202022115693 2022-06-23

Publications (1)

Publication Number Publication Date
EP4303349A1 true EP4303349A1 (fr) 2024-01-10

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ID=89069668

Family Applications (1)

Application Number Title Priority Date Filing Date
EP23180315.6A Pending EP4303349A1 (fr) 2022-06-23 2023-06-20 Procédé de fonctionnement d'un poste de filage d'un métier à filer et métier à filer

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EP (1) EP4303349A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2329223A1 (de) 1972-06-07 1974-01-03 Rieter Ag Maschf Faseraufloesewalze fuer offenend-spinnvorrichtungen
DE3341279A1 (de) 1982-12-07 1984-06-07 Výzkumný ústav bavlnářský, Ustí nad Orlicí Aufloeseeinrichtung fuer eine oe-rotor-spinneinheit
DE3417567A1 (de) 1983-05-20 1984-11-29 Výzkumný ústav bavlnářský, Ustí nad Orlicí Verfahren zum aufloesen von textilfasern an offenendspinneinheiten und vorrichtung zur durchfuehrung dieses verfahrens
DE102006033971A1 (de) 2006-07-22 2008-01-24 Oerlikon Textile Gmbh & Co. Kg Faserbandauflöseeinrichtung für eine Offenend-Spinnvorrichtung

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2329223A1 (de) 1972-06-07 1974-01-03 Rieter Ag Maschf Faseraufloesewalze fuer offenend-spinnvorrichtungen
DE3341279A1 (de) 1982-12-07 1984-06-07 Výzkumný ústav bavlnářský, Ustí nad Orlicí Aufloeseeinrichtung fuer eine oe-rotor-spinneinheit
DE3417567A1 (de) 1983-05-20 1984-11-29 Výzkumný ústav bavlnářský, Ustí nad Orlicí Verfahren zum aufloesen von textilfasern an offenendspinneinheiten und vorrichtung zur durchfuehrung dieses verfahrens
DE102006033971A1 (de) 2006-07-22 2008-01-24 Oerlikon Textile Gmbh & Co. Kg Faserbandauflöseeinrichtung für eine Offenend-Spinnvorrichtung

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