CN216809057U - Rotor type open-end spinning machine's spinning station and rotor type open-end spinning machine - Google Patents
Rotor type open-end spinning machine's spinning station and rotor type open-end spinning machine Download PDFInfo
- Publication number
- CN216809057U CN216809057U CN202122636919.8U CN202122636919U CN216809057U CN 216809057 U CN216809057 U CN 216809057U CN 202122636919 U CN202122636919 U CN 202122636919U CN 216809057 U CN216809057 U CN 216809057U
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- yarn
- spinning
- winding
- bobbin
- compressed air
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- 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
-
- 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
- D01H4/40—Removing running yarn from the yarn forming region, e.g. using tubes
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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
- B65H51/00—Forwarding filamentary material
- B65H51/20—Devices for temporarily storing filamentary material during forwarding, e.g. for buffer storage
- B65H51/205—Devices for temporarily storing filamentary material during forwarding, e.g. for buffer storage by means of a fluid
-
- 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
- D01H4/04—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 imparting twist by contact of fibres with a running surface
- D01H4/08—Rotor spinning, i.e. the running surface being provided by a rotor
-
- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Spinning Or Twisting Of Yarns (AREA)
- Winding Filamentary Materials (AREA)
Abstract
The utility model relates to a spinning station of a rotor spinning machine with an improved yarn winding device and the rotor spinning machine. The spinning station includes: a sliver feeding mechanism, a shedding mechanism, a spinning rotor for producing yarn from the sliver; a yarn take-up device comprising a take-up roller and a pressure roller cooperating with the yarn from the spinning rotor; a winding mechanism comprising a winding roller and a bobbin such that the yarn is wound on the bobbin, wherein the yarn winding device takes in the yarn and comprises a tube capable of at least partially containing and accumulating the yarn; a control unit operatively connected with the yarn take-up mechanism, the sliver feeding mechanism and the winding mechanism, the control unit being programmed such that during spinning the yarn take-up device at least partially sucks the portion of the yarn inside the tube to control the slack of the yarn during spinning. The utility model solves the problem of non-ideal yarn tension during spinning and enables to reduce slackening.
Description
Technical Field
The utility model relates to a spinning station of a rotor spinning machine with an improved yarn winding device, a rotor spinning machine and a method for winding yarn.
Background
It is known that in order to obtain the same yarn quality on a rotor spinning machine, it is necessary to synchronize very well the start of yarn winding with the start of yarn winding and thus eliminate the possibility of different yarn winding times in the rotor. The current prior art solutions do not allow such synchronization and therefore require a small gap to be formed between the start of the yarn winding and the start of the yarn winding.
However, in order to separate the start of yarn winding from the start of yarn winding, an additional device is required to perform winding while forming the yarn.
Meanwhile, in order to achieve uniform yarn spinning time in the rotor, it is necessary to reduce transients in the yarn take-up and yarn splicing stages as much as possible.
The known solutions do not solve the above technical problem.
SUMMERY OF THE UTILITY MODEL
Therefore, there is a need to address the disadvantages and limitations noted with reference to the prior art.
Such a need is met by a spinning station of a rotor spinning machine according to the utility model with an improved yarn take-up, a rotor spinning machine according to the utility model and a related spinning method according to the utility model.
According to one embodiment of the utility model, a spinning station of a rotor spinning machine, the spinning station comprises: -a sliver feeding mechanism, a shedding mechanism, a spinning rotor producing yarn from a sliver, -a yarn winding device comprising a winding roller and a pressure roller cooperating with the yarn coming from the spinning rotor, -a winding mechanism comprising a winding roller and a bobbin so as to wind the yarn on the bobbin, wherein the yarn winding device takes up the yarn and comprises a tube capable of at least partially containing and accumulating the yarn, -a control unit operatively connected with the yarn winding device, the sliver feeding mechanism and the winding mechanism, the control unit being programmed so as to: during spinning, the yarn take-up device sucks at least partially the portion of the yarn inside the tube to control the relaxation of the yarn during spinning and then gradually releases the yarn back for winding, wherein the yarn take-up device comprises an injector of air to generate a negative pressure inside the tube by means of compressed air, thereby sucking the yarn.
Wherein the control unit is programmed such that the yarn take-up device at least partially draws the portion of the yarn within the tube as the yarn progresses.
Wherein the spinning station comprises a compressed air system operatively connected to the yarn take-up device and to a pressure device acting on the winding roller and/or the bobbin to vary the contact pressure between the winding roller and the bobbin.
Wherein the control unit changes the pressure contact between the winding roller and the bobbin by means of the compressed air system based on the slack of the yarn and the length of the yarn taken up by the yarn take-up device.
Wherein the source of compressed air is connected via a valve with the control unit of the spinning station, which controls the source of compressed air and can also be connected with a yarn presence sensor.
Wherein the compressed air system has a suction nozzle of which the diameter of the injector can be adjusted.
Wherein the nozzle of the injector is replaceable to allow a change in shape.
Wherein the flow of compressed air into the mouthpiece is discontinuous.
Wherein the control unit is programmed such that the switching on and off of the compressed air is controlled individually, partly or simultaneously at each position of the machine.
Wherein the control unit is programmed such that the yarn take-up device temporarily takes up the yarn at a time before the yarn is wound on the bobbin, i.e., when the bobbin has not come into contact with the winding roller, and then gradually releases the yarn for winding.
According to another embodiment of the utility model, the rotor spinning machine comprises a spinning station according to the previous embodiment.
According to a further embodiment of the utility model, the spinning method comprises the steps of: -providing a spinning station according to the previous embodiment, -during spinning, at least partially sucking the portion of the yarn inside the tube of the yarn take-up device to control the slack of the yarn during spinning and then gradually releasing the yarn back for winding, wherein the yarn take-up device comprises an injector of air to create a negative pressure inside the tube by means of the compressed air, thereby at least partially sucking the yarn.
Wherein the compressed air system is operatively connected to the yarn take-up device and to a pressure device acting on the winding roller and/or the bobbin to vary the contact pressure between the winding roller and the bobbin, the method comprising the steps of: simultaneously controlling, by means of the compressed air system, both the negative pressure of the yarn take-up device and the contact pressure between the winding roller and the bobbin based on the slack of the yarn and the length of the yarn taken up by the yarn take-up device.
The spinning method further comprises the following steps: -generating a negative pressure in the suction nozzle or the tube by means of the compressed air entering the diffuser through a suction nozzle with a replaceable cross section, the suction nozzle or the tube being located near the spinning axis of the yarn and allowing the yarn to smoothly arrive from the yarn base pin to the spinning axis and thereby the yarn end to smoothly arrive at the spinning rotor for splicing when yarn take-up is stopped, i.e. when the pressure roller is not in contact with the take-up roller.
The spinning method further comprises the following steps: -at the stop of winding, i.e. when the bobbin is not in contact with the winding roller, the yarn is wound up for a certain time and gradually released into the winding to ensure the uniformity of the splice and avoid breakage of the yarn coming from the bobbin in subsequent processes.
The spinning method further comprises the following steps: -reducing the slackening of the yarn during winding on the bobbin due to the configuration of a soft bobbin, a tapered bobbin or other non-standard bobbin, by using the full flow of a smaller nozzle or by using an intermittent air flow, which will significantly reduce the need for compressed air for longer use.
The spinning method further comprises the following steps: -reducing the slack of the yarn during stopping and restarting spinning on a rotor spinning machine by means of a controlled stop and start function, wherein the method comprises the steps of: -generating a negative pressure on the yarn winding device at a time before the spinning stops, so that the yarn is properly tensioned during the unwinding of the yarn on the bobbin, -re-tensioning the yarn with the yarn winding device when the compressed air is restored, and if necessary, extracting the excess yarn for a certain time, and then gradually releasing for winding before the withdrawal section is retracted, when the yarn end is introduced into the spinning rotor.
The spinning method further comprises the following steps: -opening the yarn take-up device before starting the cutting in order to reduce the occurrence of loose yarn that would cause a spinning interruption during the cutting, -providing a full or intermittent air flow, thereby generating the necessary negative pressure to suck the loose yarn into the suction nozzle or the tube, and thereby reducing any slack of the yarn.
The utility model solves the problem of non-ideal yarn tension during spinning and enables to reduce slackening.
Drawings
Other features and advantages of the utility model will become more readily apparent from the following description of a preferred and non-limiting embodiment thereof, in which:
FIG. 1 shows a side view of a spinning station including a yarn take-up device according to a possible embodiment of the utility model;
FIG. 2 shows a front view of a detail of II in FIG. 1;
FIG. 3 shows a side view of a spinning station comprising a yarn take-up device according to another possible embodiment of the utility model;
figure 4 shows a front view of a detail of the IV in figure 3.
Elements or parts of elements common to the embodiments described below will be denoted with the same reference numerals.
Detailed Description
With reference to the preceding figures, a spinning station is generally indicated at 30.
The spinning station 30 generally belongs to a rotor spinning machine (not shown).
In any case, the spinning station 30 and the rotor spinning machine can be of any type, shape and size for the purposes of the present invention.
The spinning station 30 comprises a sliver feeding mechanism 21, a shedding mechanism 22, a spinning rotor 19 for producing the yarn 5 from said sliver.
Furthermore, the spinning station 30 comprises a yarn winding device 6 comprising a winding roller 11 and a pressure roller 12 cooperating with the yarn 5 coming from said spinning rotor 19.
The spinning station 30 also comprises a winding mechanism comprising a winding roller 13 and a bobbin 15 for winding said yarn on said bobbin 15.
The yarn winding device 6 takes the yarn 5 and comprises a tube 4 (or suction mouth 4) able to at least partially contain and accumulate said yarn 5.
The spinning station 30 comprises a control unit 25 operatively connected to the yarn winding device 6, the sliver feeding means 21 and the winding means 14.
Advantageously, the control unit 25 is programmed so that during the spinning and/or splicing cycle, the yarn take-up device 6 at least partially sucks the portion of yarn inside said tube 4, in order to control the relaxation of the yarn 5 during spinning, and then gradually releases the yarn back for winding.
In particular, the yarn winding device 6 comprises an injector 1 of air to generate a negative pressure 9 inside the tube 4 by means of compressed air 8, so as to suck the yarn 5.
According to a possible embodiment, the yarn winding device 6 at least partially sucks the portion of the yarn 5 inside said tube 4 while the yarn 5 is travelling.
According to a possible embodiment, the spinning station 30 comprises a compressed air system operatively connected to both the yarn winding device 6 and to a pressure device 16 (generally an arm) acting on said winding roller 13 and/or bobbin 15 in order to vary the contact pressure between the winding roller and the bobbin.
Preferably, the control unit 25 varies the pressure contact between the winding roller 13 and the bobbin 15 by means of said compressed air system based on the slack of the yarn 5 and the length of the yarn 5 taken up by the yarn winding device 6.
According to a possible embodiment, the compressed air system has a suction nozzle 3 of adjustable diameter of the injector 1.
According to a possible embodiment, the suction mouth 3 of the injector 1 is replaceable, so as to allow the shape to be changed.
According to a possible embodiment, the flow of compressed air 8 into the suction nozzle 3 is discontinuous.
According to a possible embodiment, the control unit 25 is programmed so that the switching on and off of the compressed air 8 is controlled separately, partially or simultaneously at each position of the machine.
According to a possible embodiment, the control unit is programmed so that the yarn winding device 6 temporarily winds the yarn 5 at a time before winding the yarn 5 on the bobbin 15, i.e. when the bobbin 15 is not yet in contact with the winding roller 13, and then gradually releases the yarn for winding.
The operation of the yarn winding device according to the present invention will now be described.
In particular, by means of compressed air 8, which enters the diffuser 2 through the suction nozzle 3 with replaceable section, a negative pressure 9 is generated in the suction nozzle or tube 4, which is located near the yarn spinning axis and helps the yarn 23 to reach the spinning axis smoothly from the yarn base pin 24 when the yarn winding is stopped, i.e. the pressure roller 12 is not in contact with the winding roller 11, and thus the yarn end 20 is made to reach the spinning rotor 19 smoothly for splicing, provided that the suction of the yarn winding device 6 is modulated so as not to influence or interfere with the suction of the spinning rotor 19.
Furthermore, at the stop of winding, i.e. when the bobbin 15 is no longer in contact with the winding roller 13, the yarn 5 can be wound up for a certain time and then gradually released into the winding, in order to ensure the uniformity of the splice and avoid breakage of the yarn 5 from the bobbin 15 in the subsequent processing.
The replaceable suction mouth or tube 4 has an interchangeable shape, as required, to achieve an optimal yarn take-up.
According to a possible embodiment, the source of compressed air 8 is connected via a valve 28 to a control unit 25 of the spinning station 30, which controls the source of compressed air, and which can also be connected to a yarn presence sensor for possible adjustment of the start time of the device.
After ensuring yarn take-up and obtaining the proper yarn tension 7 between the take-up roller 11 and the winding roller 13, the source of compressed air 8 can be closed, which can be done by fixedly setting the take-up time or by a yarn presence sensor.
Furthermore, this device can also be advantageously used to reduce the slackening of the yarn 5 during winding on the bobbin 15 due to the configuration of soft bobbins or other non-standard bobbins. It is possible to use a full flow of the smaller mouthpiece 3 or to use an intermittent air flow, which will significantly reduce the need for compressed air for longer use. The same principle can be used when winding on a tapered bobbin 15, where periodic slackening occurs due to different bobbin diameters.
The yarn take-up device 6 can also be used to reduce the slack during stopping and restarting spinning on a rotor spinning machine (both by standard machine power and in case of power failure) by controlled stop and start functions. At the time before the spinning stops, a negative pressure is created in order to properly tension the yarn during unwinding on the bobbin. When the compressed air is restored, the yarn can be tensioned again by this device and, if necessary, the excess yarn can be extracted for a certain time and then, before the extraction section is retracted, gradually released for winding when the yarn end is introduced into the rotor.
In order to reduce the occurrence of loose yarn 60 which may cause spinning interruptions during shearing, this device is opened before the shearing is started and the full or intermittent air flow generates the necessary negative pressure 9 to suck the loose yarn 60 into the suction mouth or tube 4 of the injector (jet pump) 1 and thereby reduce any slack caused, for example, by greater friction of the yarn on certain parts of the thread or by insufficient vacuum in the exhaust duct of the doffer or in the auxiliary exhaust duct of the machine.
The activation time of the yarn take-up device is dependent on different variables including, for example, the number of threads processed, the winding speed, the thread material, etc.
Furthermore, the activation time of the yarn winding device can be automatically calculated and set by the central processing unit of the machine, or it can also be set manually.
As can be understood from the above description, the present invention allows overcoming the drawbacks introduced in the known art.
In particular, the solution according to the utility model comprises a yarn winding device that is opened before winding starts, which solves the problem of the need to reduce as much as possible the transients of the yarn winding and yarn splicing phases.
Furthermore, the device also adequately solves the problem of the non-ideal yarn tension during spinning on soft winding sections, non-standard winding sections or tapered spools and thereby improves the winding quality. Furthermore, it can be advantageously used for automatic doffing.
Furthermore, the device according to the utility model can also be advantageously used to reduce the slack in the yarn during winding on bobbins due to the configuration of soft bobbins or other non-standard bobbins. For example, a full flow of a smaller mouthpiece or an intermittent air flow may be used, which would significantly reduce the need for compressed air for longer use. The same principle can be used when winding on a tapered bobbin, where periodic slackening occurs due to different bobbin diameters.
The device can also be used to reduce the slack during stopping and restarting spinning on a rotor spinning machine (both by standard machine power and in case of power failure) by controlled stop and start functions. At the time before the spinning stops, a negative pressure is created in order to properly tension the yarn during unwinding on the bobbin. When the compressed air is restored, the yarn can be tensioned again by this device and, if necessary, the excess yarn can be extracted for a certain time and then gradually released for winding when the yarn end is introduced into the rotor before the withdrawal part is retracted.
In order to reduce the occurrence of loose yarn which may cause spinning interruptions during shearing, this device can be opened before the shearing is started and a full or intermittent air flow generates the necessary pressure to suck the loose yarn into the suction mouth of the injector (jet pump) and thereby reduce any slack caused, for example, by greater friction of the yarn on certain parts of the thread or by insufficient vacuum in the exhaust duct of the doffer or in the auxiliary exhaust duct of the machine.
The use of injectors using local air to create negative pressure in the tube of the yarn take-up device by means of compressed air to suck the yarn is a real improvement with respect to spinning machines using centralized air intake facilities. In fact, the injector of local air gives the possibility of obtaining an accurate value of the negative pressure in the tube with respect to a centralized solution. In this way, the control of the yarn length and tension is more precise with respect to solutions using centralized air intake systems. Furthermore, in this way the function of the concentrator system is not disturbed and the total air consumption is significantly reduced.
Advantageously, the device can be used on automatic or semi-automatic machines as a self-contained part of the machine.
The solution according to the utility model eliminates to a great extent the problem of forming a loose yarn on a rotor spinning machine wound onto a bobbin, which can cause problems during further processing, especially in the following cases:
-a relaxation that occurs during or immediately after the birth,
-the slack that occurs during yarn dispensing when the yarn is wound onto the spool, in particular at high draw-off speeds,
slack during doffing due to e.g. increased friction of the yarn against the contact edge or due to a small negative pressure after temporarily pulling the yarn out of the bobbin,
-slack with non-standard windings, soft windings or tapered bobbins,
slack due to different technical speeds (feeding or drawing), especially when producing fancy yarn.
Furthermore, the solution provides a reduction of the slack during the stop and start of the plurality of spinning units and significantly eliminates the drawback of the different speeds of yarn insertion and subsequent withdrawal from the rotor during the spinning-in.
A man skilled in the art, in order to satisfy contingent and specific requirements, may make numerous modifications and variants to the apparatus and to the method described above, all of which are included within the scope of the utility model, as defined by the following claims.
List of reference numerals
1. Syringe (jet pump)
2. Diffuser device
3. Suction nozzle
4. Pipe (suction nozzle)
5. Yarn
6. Yarn winding device
7. Proper yarn tension
8. Source of compressed air
9. The generated negative pressure
10. Outlet air
11. Take-out roller
12. Press roll
13. Winding roller
14. Pipe
15. Bobbin
16. Pressure equipment (arm)
17. Yarn distribution
18. Passive compensator (Passive compensator)
19. Spinning rotor
20. Yarn end for piecing together
21. Feeding mechanism
22. Selecting mechanism
23. Spare yarn spinning section
24. Standby retaining pin
25. Control unit
28. Valve with a valve body
30. Spinning station
60. Relaxed yarn
Claims (11)
1. A spinning station of a rotor spinning machine, characterized in that it comprises:
-a sliver feeding means (21), a shedding means (22), a spinning rotor (19) for producing yarn from the sliver,
-a yarn winding device (6) comprising a winding roller (11) and a pressure roller (12) cooperating with the yarn coming from the spinning rotor (19),
-a winding mechanism (14) comprising a winding roller (13) and a bobbin (15) so as to wind the yarn on the bobbin (15),
wherein the yarn take-up device (6) takes up the yarn (5) and comprises a tube (4) capable of at least partially containing and accumulating the yarn (5),
-a control unit (25) operatively connected with the yarn winding device (6), the sliver feeding mechanism (21) and the winding mechanism (14), the control unit (25) being programmed so that:
during spinning, the yarn take-up device (6) sucks at least partially the portion of the yarn (5) inside the tube (4) to control the relaxation of the yarn (5) during spinning and then gradually releases the yarn back for winding, wherein the yarn take-up device (6) comprises an injector (1) of air to create a negative pressure (9) inside the tube by means of compressed air (8) to suck the yarn (5).
2. The spinning station according to claim 1, characterized in that the control unit (25) is programmed so that the yarn take-up device (6) at least partially sucks the portion of the yarn (5) inside the tube (4) while the yarn (5) travels.
3. The spinning station according to claim 1 or 2, characterized in that it comprises a compressed air system operatively connected to the yarn take-up device (6) and to a pressure device acting on the winding roller (13) and/or the bobbin (15) to vary the contact pressure between them.
4. The spinning station according to claim 3, characterized in that the control unit (25) varies the pressure contact between the winding roller (13) and the bobbin (15) by means of the compressed air system based on the slack of the yarn (5) and the length of the yarn taken up by the yarn take-up device (6).
5. The spinning station according to claim 3, characterized in that the source of compressed air (8) is connected via a valve (28) with the control unit (25) of the spinning station (30), which controls the source of compressed air and can also be connected with a yarn presence sensor.
6. Spinning station according to claim 3, characterized in that the compressed air system has a suction nozzle (3) of which the diameter of the injector (1) can be adjusted.
7. Spinning station according to claim 6, characterized in that the suction nozzle (3) of the injector (1) is exchangeable so that the shape changes.
8. Spinning station according to claim 6, characterized in that the flow of compressed air (8) into the suction nozzle (3) is discontinuous.
9. A spinning station according to claim 3, characterised in that the control unit (25) is programmed so that the switching on and off of the compressed air (8) is controlled individually, partly or simultaneously at each position of the machine.
10. The spinning station according to claim 3, characterized in that the control unit (25) is programmed so that the yarn take-up device (6) temporarily takes up the yarn (5) and then gradually releases it for winding, at the time before the yarn (5) is wound on the bobbin (15), i.e. when the bobbin (15) is not yet in contact with the winding roller (13).
11. Rotor spinning machine, characterized in that it comprises a spinning station (30) according to any one of the preceding claims.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT102020000025831A IT202000025831A1 (en) | 2020-10-30 | 2020-10-30 | SPINNING STATION OF A ROTOR SPINNING MACHINE WITH IMPROVED YARN WINDING DEVICE, ROTOR SPINNING MACHINE AND RELATED SPINNING METHOD |
| IT102020000025831 | 2020-10-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216809057U true CN216809057U (en) | 2022-06-24 |
Family
ID=74141767
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111275767.1A Pending CN114438630A (en) | 2020-10-30 | 2021-10-29 | Spinning station of rotor spinning machine, rotor spinning machine and spinning method |
| CN202122636919.8U Active CN216809057U (en) | 2020-10-30 | 2021-10-29 | Rotor type open-end spinning machine's spinning station and rotor type open-end spinning machine |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111275767.1A Pending CN114438630A (en) | 2020-10-30 | 2021-10-29 | Spinning station of rotor spinning machine, rotor spinning machine and spinning method |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP3992336A1 (en) |
| CN (2) | CN114438630A (en) |
| IT (1) | IT202000025831A1 (en) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102006047288A1 (en) * | 2006-10-06 | 2008-04-10 | Oerlikon Textile Gmbh & Co. Kg | Workplace of a textile machine |
| DE102008056288A1 (en) * | 2008-11-08 | 2010-05-12 | Oerlikon Textile Gmbh & Co. Kg | Method for operating an open-end spinning machine and open-end spinning machine |
| DE102013009998A1 (en) * | 2013-06-14 | 2014-12-18 | Saurer Germany Gmbh & Co. Kg | Method for operating a workstation of an open-end rotor spinning machine and associated workstation |
| CZ2015321A3 (en) * | 2015-05-14 | 2016-12-21 | Rieter Cz S.R.O. | Method of mass yarn spinning on workstations of rotor spinning machine and apparatus for making the same |
| DE102019103193A1 (en) * | 2019-02-08 | 2020-08-13 | Saurer Spinning Solutions Gmbh & Co. Kg | Thread storage tube for a workstation of a textile machine and workstation of a textile machine |
-
2020
- 2020-10-30 IT IT102020000025831A patent/IT202000025831A1/en unknown
-
2021
- 2021-10-21 EP EP21203874.9A patent/EP3992336A1/en not_active Withdrawn
- 2021-10-29 CN CN202111275767.1A patent/CN114438630A/en active Pending
- 2021-10-29 CN CN202122636919.8U patent/CN216809057U/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN114438630A (en) | 2022-05-06 |
| EP3992336A1 (en) | 2022-05-04 |
| IT202000025831A1 (en) | 2022-04-30 |
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