EP3919659A1 - Procédé de filage d'un métier à filer à rotor à bout libre et métier à filer à rotor à bout libre - Google Patents

Procédé de filage d'un métier à filer à rotor à bout libre et métier à filer à rotor à bout libre Download PDF

Info

Publication number: EP3919659A1
Authority: EP; European Patent Office
Prior art keywords: open; spinning; sliver; draw; end rotor
Prior art date: 2020-06-03
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

EP20177976.6A

Other languages

German (de)

English (en)

Other versions

EP3919659B1 (fr

Inventor

Christoph Haase

Jaroslav SEMERAD

Jaroslav BUCAK

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.)

Saurer Czech sro

Saurer Spinning Solutions GmbH and Co KG

Original Assignee

Saurer Czech sro

Saurer Spinning Solutions GmbH and Co KG

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.)

2020-06-03

Filing date

2020-06-03

Publication date

2021-12-08

2020-06-03 Application filed by Saurer Czech sro, Saurer Spinning Solutions GmbH and Co KG filed Critical Saurer Czech sro

2020-06-03 Priority to EP20177976.6A priority Critical patent/EP3919659B1/fr

2021-05-28 Priority to CN202110590043.XA priority patent/CN113755976B/zh

2021-12-08 Publication of EP3919659A1 publication Critical patent/EP3919659A1/fr

2023-02-15 Application granted granted Critical

2023-02-15 Publication of EP3919659B1 publication Critical patent/EP3919659B1/fr

Status Active legal-status Critical Current

2040-06-03 Anticipated expiration legal-status Critical

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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
- D01H4/48—Piecing arrangements; Control therefor
- D01H4/50—Piecing arrangements; Control therefor for rotor spinning
- 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
- 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
- D01H4/44—Control of driving or stopping in rotor spinning

Definitions

the invention relates to a method for piecing the open-end rotor spinning devices of the workplaces of an open-end rotor spinning machine in the so-called "joint spinning-in" process, the workplaces of the open-end rotor spinning machine each having a drivable spinning rotor rotating at high speed in a rotor housing that can be subjected to negative pressure , a drivable sliver opening roller and a single motor drivable sliver intake cylinder.
the open-end rotor spinning machine is shut down in such a way that a yarn end required for re-spinning remains in the area of a thread take-off tube of the open-end rotor spinning device at the work station.
the open-end rotor spinning devices of all work stations of the open-end rotor spinning machine are spun again at the same time.
the invention also relates to the open-end rotor spinning device.
Open-end rotor spinning machines are known in various embodiments and are described in detail in numerous applications in the patent literature.
the various open-end rotor spinning machines often differ not only with regard to the design of their workplaces, but also in many cases with regard to the mode of operation or the operation of their open-end rotor spinning devices.
Various methods are known, some of which differ considerably, especially in connection with the re-spinning of the numerous workplaces after a power failure.
open-end rotor spinning machines are known, the numerous work stations of which are supplied by one or more operating units, so-called piecing cars.
Such a piecing carriage travels to the work site concerned, for example after a spinning interruption due to a thread break, positions itself there and spins the open-end rotor spinning device of the work site again.
a relatively long time is required until all workplaces of the open-end rotor spinning machine are spun again.
Open-end rotor spinning machines that work in what is known as the "joint spinning-in” process are therefore often in use in areas in which power failures are to be expected more frequently.
the open-end spinning devices of all workplaces of an open-end rotor spinning machine are spun again at the same time after a power failure.
the work stations each have an open-end rotor spinning device for producing a thread, a downstream thread take-off device and a winding device for producing a cheese.
the open-end rotor spinning devices each have a spinning rotor rotating at high speed in a rotor housing that can be subjected to negative pressure, a rotatably mounted sliver opening roller and a sliver intake cylinder.
the spinning rotors and the sliver opening rollers are each driven by machine-length, revolving tangential belts, during the drive the sliver intake cylinder takes place via machine-length drive shafts which are acted upon by drives arranged on the machine end.
the invention is based on the object of developing a method in connection with open-end rotor spinning machines that work in the "joint spinning-in" method which ensures that all of them are restarted Workplaces of an open-end rotor spinning machine, for Example after a power failure, it is ensured that all piecings of the numerous workplaces of the open-end rotor spinning machine always have a proper training.
this object is achieved in that, when a power failure occurs, the draw-in speed of the sliver draw-in cylinder is first continuously reduced, and then the draw-in speed of the sliver draw-in cylinder is briefly increased again to generate additional fiber feed into the spinning rotor and the sliver draw-in cylinder is then stopped so abruptly that after At the point where the fiber additive is fed in, the fibers are torn off in a targeted manner, with the torn fibers being disposed of pneumatically.
the method according to the invention has the particular advantage that by briefly increasing the amount of fiber to be fed into the spinning rotor and then abruptly stopping the fiber feed, a defined break point is created, which ensures that the torn yarn ends at all workplaces of the open-end rotor spinning machine have an almost identical appearance. This means that in the subsequent piecing process of the work stations, yarn ends are used that are all very similar both in terms of their thickness and length. The piecings made with such optimized yarn ends are accordingly all almost the same and have a good quality standard.
the kinetic energy of the spinning rotor drive running out is used to support the electrical supply of the drive of the sliver draw-in cylinder.
the expiring rotor drive still provides enough electrical energy that the drive of the sliver intake cylinder can be accelerated for a short time, with the result that there is a short-term increase in the output in the expiring spinning rotor the amount of fiber fed in comes.
the resulting excess fibers are disposed of by the dirt suction device of the textile machine.
the sliver draw-in cylinder is stopped each time the draw-in speed of the fiber-sliver draw-in cylinder has reached a predetermined target value. It is preferably provided that the sliver intake cylinder is rotated back after the abrupt stop. This prevents individual fibers from dripping.
the aforementioned method steps can ensure that all piecings created at the same time always have a proper standard.
the object is also achieved by an open-end rotor spinning machine with a control device and open-end rotor spinning devices at the work stations.
the work stations of the open-end rotor spinning machine each have a drivable spinning rotor rotating at high speed in a rotor housing that can be subjected to negative pressure, a drivable sliver opening roller and a sliver intake cylinder that can be driven by a single motor.
the control device stops the open-end rotor spinning machine in such a way that a yarn end required for re-spinning remains in the area of a thread take-off tube of the open-end rotor spinning device at the work station.
the control device controls the open-end rotor spinning machine in such a way that the open-end rotor spinning devices of all workplaces of the open-end rotor spinning machine are spun again at the same time.
the control device controls the sliver draw-in cylinder when the power failure occurs in such a way that the draw-in speed of the fiber-sliver draw-in cylinder is first continuously reduced, and then the draw-in speed of the fiber-sliver draw-in cylinder is briefly increased again to generate an additional fiber feed into the spinning rotor and that the fiber-sliver draw-in cylinder is then stopped so abruptly, that after the point where the fiber additive is fed in, the fibers are deliberately torn off, with the torn fibers being disposed of pneumatically.
the time of the start of the additional fiber feed can be set by means of the control device.
the amount of fiber additive feed can also be adjustable by means of the control device.
the control device can preferably be given the target value of the draw-in speed of the sliver draw-in cylinder after the same has been increased.
FIG. 1A shows schematically a first embodiment of an open-end rotor spinning machine 1 with a plurality of work stations 2, in which, for example in the event of a power failure, the “joint spinning-in” process is used two, each arranged on the machine end
Machine frames 30 and 40 in which, similar to that in the Figure 1B shown, each at least a part of the drives for the work organs of the work stations 2 are arranged.
the workplaces 2 arranged between the machine frames 30 and 40 are combined into so-called sections 4, which generally represent an assembly unit, the individual sections 4 each having a plurality of workplaces 2 on both sides.
twelve work stations 2 are arranged next to one another on each side of the sections 4, which are connected to one another, for example, by connecting elements or to the machine frames 30, 40.
a control device 29 is arranged in the machine frame 40, which controls the processes of the open-end rotor spinning machine 1 and via which the operator can specify parameters.
the Figure 1B shows an alternative embodiment of an open-end rotor spinning machine 1.
the work stations 2 of this comparable open-end rotor spinning machine 1 are also operated in the "joint spinning-in" process after a power failure.
this open-end rotor spinning machine 1 also has a plurality of sections 4 which are each equipped with twenty-four work stations 2.
this open-end rotor spinning machine 1 has a central machine frame 3 arranged approximately in the middle between the numerous sections 4.
the jobs 2 of the open-end rotor spinning machine 1 have, as usual, what is in the Figures 1A and 1B is not shown in detail for reasons of clarity, each via an open-end rotor spinning device 5 equipped with a spinning rotor 8, an opening roller 10 and a sliver draw-in cylinder 11, as well as a winding device 6 which is equipped with a bobbin frame, a thread traversing device and a bobbin drive roller.
a fiber sliver that is stored in a spinning can 7 is spun into a thread, which is then wound onto the winding device 6 to form a cheese 9.
the various working elements of the open-end rotor spinning devices 5 and the winding device 6 are acted upon either by so-called group drives and / or by individual drives.
the thread traversing device of the winding device 6 is actuated, for example, via such a group drive, with the thread guides (not shown) on one side of the machine are each connected via a machine-length thread guide rod 12 to a thread guide gear 13 and to a thread guide drive 14.
the thread guide gear 13 and the associated thread guide drive 14 are here, as in FIG Figure 1B indicated, arranged approximately centrally between the work stations 2 positioned central machine frame 3.
this central machine frame 3 there is also a winding shaft drive 15 and a winding shaft gear 17 for the rotatably mounted winding shafts 16, which drive the cross-wound bobbins 9 in a frictionally engaged manner via connected winding rollers.
Such a central machine frame 3 also usually has a device 19 for generating the negative pressure required during the spinning process and a filter device 27 for cleaning the air pollution occurring during the spinning process.
the drives 20 and 21 for tangential belts 23 and 26, which act on the spinning rotors 8 and the opening rollers 28 of the open-end rotor spinning devices 5, and a control device 29 are positioned within the central machine frame 3.
the central machine frame 3 can also have a connecting piece 25, via which the open-end rotor spinning machine 1 can be connected, for example, to an external pneumatic source or to an air conditioning system belonging to the spinning mill.
the numerous sections 4 arranged to the right and left of the central machine frame 3 of the open-end rotor spinning machine 1 are, as is known and therefore not shown for reasons of clarity, with various continuous supply and disposal channels, for example an air channel for the spinning air suction, an electronics channel for the Bus connection of the control device 29 and / or a cable duct for the yarn monitoring system.
different drive elements are stored in the sections 4, with which the working elements of the work stations 2 can be acted upon.
Such drive units are, as already indicated above, for example the thread guide rods 12, the winding shafts 16 and the thread take-off shafts.
the tangential belts 23, 26 for driving the spinning rotors 8 or the opening rollers 28 also run through the sections 4.
continuous drive shafts or individually controllable drives for the sliver intake cylinders 11 are arranged in the sections 4.
FIGS 2A and 2 B show, each in a perspective view, an open-end rotor spinning device 5 of an, for example, semi-automatic, open-end rotor spinning machine 1.
open-end rotor spinning machines 1 each have a plurality of work stations 2, which in turn each have an open-end rotor spinning device 5 and one in the Figures 2A and 2 B not shown winding device 6 are equipped.
the open-end rotor spinning devices 5 are each equipped with a rotor housing 18 which can be subjected to negative pressure and in which a spinning rotor 8 rotates at high speed during the spinning process.
such open-end rotor spinning devices 5 have a connected opening roller housing 22 in which an opening roller 28 is rotatably mounted.
the opening roller 28 combs out a sliver stored in a spinning can 7 and presented by a sliver intake cylinder, the individual fibers combed out by the opening roller 28 being pneumatically conveyed via a so-called fiber guide channel to the vacuum-loaded rotor housing 18 and from there through the rotating spinning rotor 8 to a thread are spun.
the open-end rotor spinning devices 5 shown are also each mounted so as to be pivotable to a limited extent by means of a bearing device, for example a machine-length bearing axis 39.
the spinning rotor 8 is rotatably mounted with its rotor shaft 31, for example in a direct bearing device 32, and is driven by a revolving, machine-length tangential belt 23 on which the rotor shaft 31 rests.
the rotor housing 18, which can be acted upon by negative spinning pressure, in which the spinning cup of a spinning rotor 8 rotates at high speed during the spinning process and which can be closed by a cover element 41, is, as already indicated above, connected via a fiber guide channel to a sliver opening device indicated overall by the reference numeral 33 .
the direct bearing device 32 and the rotor housing 18 form a rotor shaft bearing element 42 which is connected to the opening roller housing 22 of the sliver opening device 33 via a pivot axis 34.
the rotor shaft bearing element 42 In the operating position, in which the axis of rotation of the opening roller 28 and the rotor axis of the sliver intake cylinder 11 are arranged orthogonally to the axis of rotation of the spinning rotor 8, the rotor shaft bearing element 42 is positioned so that the rotor shaft 31 rests from below on the machine-length, circumferential tangential belt 23. With the open-end rotor spinning device open 5, on the other hand, the rotor shaft bearing element 42 is positioned in an inoperative position in which a braking element 35 rests on the rotor shaft 31, which is now positioned at a distance from the machine-length tangential belt 23.
the opening roller housing 22 which is preferably made of an aluminum alloy
the opening roller 28 and the sliver intake cylinder 11 are rotatably mounted, the opening roller 28 being drivable by a machine-length tangential belt 26, while the fiber sliver intake cylinder 11 is either connected to a long drive shaft or by a single drive, preferably a stepping motor , can be acted upon.
the pneumatic device 10 has an air inlet opening 36 through which ambient air flows into the opening roller housing 22 during the spinning process, which air forms a pneumatic guide for combed, good individual fibers in the area of the opening roller housing 22.
the dirt disposal channel can be acted upon pneumatically, for example by a vacuum device 19 arranged in the central machine frame 3.
the kinetic energy of the collecting drives is used to briefly ensure the energy supply for controlling all relevant drives, in particular the sliver intake cylinder 11, until the machine comes to a standstill.
the sliver intake cylinders 11 are briefly driven in such a way that the value of the amount of fiber to be fed into the opening roller housing 22 and thus into the spinning rotor 8 by the sliver intake cylinder 11 is increased, and thus a defined additional fiber feed is generated which generates a predetermined breaking point.
the kinetic energy of the outgoing spinning rotor drive 20 is used to influence the draw-in speed of the sliver draw-in cylinder 11, which is identified in the diagram with the reference numeral 45, in a defined manner. That is to say, the draw-in speed 45 of the sliver draw-in cylinder 11 initially continuously decreases, as shown, from point 46, which represents the time of the power failure. As the draw-in speed 45 is continuously reduced, a target value 47 of the draw-in speed 45 is reached at some point at which operation can no longer be maintained.
the kinetic energy of the spinning rotor drive is then used to briefly increase the draw-in speed 45 of the sliver draw-in cylinder 11 and thus the fiber feed into the spinning rotor 8.
This predeterminable point in time, identified by the reference number 44, of the start of the brief increase in the fiber feed can be set by software on the control device 29.
the point in time 44 of the start lies, for example, 150 ms before the target value 43, at which the sliver intake cylinder 11 is stopped abruptly and the fiber feed is thus stopped.

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Engineering & Computer Science (AREA)
Mechanical Engineering (AREA)
Textile Engineering (AREA)
Spinning Or Twisting Of Yarns (AREA)

EP20177976.6A 2020-06-03 2020-06-03 Procédé de filage d'un métier à filer à rotor à bout libre et métier à filer à rotor à bout libre Active EP3919659B1 (fr)

Priority Applications (2)

Application Number	Priority Date	Filing Date	Title
EP20177976.6A EP3919659B1 (fr)	2020-06-03	2020-06-03	Procédé de filage d'un métier à filer à rotor à bout libre et métier à filer à rotor à bout libre
CN202110590043.XA CN113755976B (zh)	2020-06-03	2021-05-28	用于自由端转杯纺纱机的接纱方法和自由端转杯纺纱机

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
EP20177976.6A EP3919659B1 (fr)	2020-06-03	2020-06-03	Procédé de filage d'un métier à filer à rotor à bout libre et métier à filer à rotor à bout libre

Publications (2)

Publication Number	Publication Date
EP3919659A1 true EP3919659A1 (fr)	2021-12-08
EP3919659B1 EP3919659B1 (fr)	2023-02-15

Family

ID=70977397

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP20177976.6A Active EP3919659B1 (fr)	2020-06-03	2020-06-03	Procédé de filage d'un métier à filer à rotor à bout libre et métier à filer à rotor à bout libre

Country Status (2)

Country	Link
EP (1)	EP3919659B1 (fr)
CN (1)	CN113755976B (fr)

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CZ2012889A3 (cs) *	2012-12-10	2014-06-18	Rieter Cz S.R.O.	Způsob zapřádání poloautomatického rotorového dopřádacího stroje
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Also Published As

Publication number	Publication date
CN113755976A (zh)	2021-12-07
EP3919659B1 (fr)	2023-02-15
CN113755976B (zh)	2022-09-20

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DE102007006679B4 (de)	2018-05-30	Verfahren zum Betreiben einer Kreuzspulen herstellenden Textilmaschine
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WO2008049486A1 (fr)	2008-05-02	Procédé et dispositif d'utilisation d'une machine textile qui prépare des bobines croisées
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EP1573098A1 (fr)	2005-09-14	Dispositif pour fabriquer une fibre filee
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EP3839114A1 (fr)	2021-06-23	Procédé d'agencement d'une bande de fibre sur une unité de filage d'un métier à filer
DE3205535A1 (de)	1983-09-08	Verfahren und vorrichtung zum abstellen und wiederanfahren einer offenend-spinnmaschine mit einer vielzahl von spinnvorrichtungen
EP3983584B1 (fr)	2024-11-20	Métier à filer ainsi que procédé pour le fonctionnement d'un poste de filature d'un métier à filer
EP1422323A2 (fr)	2004-05-26	Métiers à filer à vortex d'air modulaire
DE3401316A1 (de)	1985-07-18	Verfahren zum stillsetzen und wiederanfahren eines oe-friktionsspinnaggregates
WO2022214379A1 (fr)	2022-10-13	Peigneuse et procédé de fonctionnement d'une peigneuse
WO2022161652A1 (fr)	2022-08-04	Peigneuse et procédé de fonctionnement d'une peigneuse
LU503240B1 (de)	2024-06-24	Faserbandvorbereitung

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