WO2019155413A1 - Multi-spindle sliver-fed spinning machine with spin box modules for spinning coarse and long fibres such as coir and banana - Google Patents
Multi-spindle sliver-fed spinning machine with spin box modules for spinning coarse and long fibres such as coir and banana Download PDFInfo
- Publication number
- WO2019155413A1 WO2019155413A1 PCT/IB2019/051021 IB2019051021W WO2019155413A1 WO 2019155413 A1 WO2019155413 A1 WO 2019155413A1 IB 2019051021 W IB2019051021 W IB 2019051021W WO 2019155413 A1 WO2019155413 A1 WO 2019155413A1
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- Prior art keywords
- machine
- yarn
- spinning
- spin box
- spin
- Prior art date
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Classifications
-
- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
- D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
- D02G3/22—Yarns or threads characterised by constructional features, e.g. blending, filament/fibre
- D02G3/36—Cored or coated yarns or threads
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
- Y02P70/62—Manufacturing or production processes characterised by the final manufactured product related technologies for production or treatment of textile or flexible materials or products thereof, including footwear
Definitions
- Present invention relates to a multiple- spindle spinning machine for spinning coarse and long fibers such as coir, sisal, banana, wool etc., in which the concept of spin box is used to feed fibers, open & clean them, assemble and twist into a yarn in a sub-assembly. Multiple numbers of these modular units are mounted side by side to make long spinning machines with multiple spinning positions.
- Yam from coarse fibers like coir, banana etc. is spun in a mechanized spinning machine also known as Automatic Spinning machine, in which opened fibers are made to fall into a V-shaped tray on a core thread fed separately, usually, a synthetic thread. These fibers along with the core thread are twisted together by a twisting device and drawn continuously so that the spinning process takes place without interruption. Since fibres has a free fall into the V-Channel tray from the opening roller above the tray; they float and fall freely on the core thread in the tray without any control.
- the spinning machine usually having 2 or 4 spindles produce one or two numbers of 2-ply yams respectively, this will be wound on bobbins using flyer type winding mechanism.
- EP 1801271 A describes a core yam spinning machine capable of determining a presence or an absence of a core. Further, the present invention relates to a method for determining the presence or the absence of the core in a core yam.
- CN2009 88930 Y describes an invention relates to a textile industry, and particularly relates to an automatic machine coir preparation used.
- US 4669259 A describes a spinning machine having a drafting frame for drafting sliver or roving into roving or yarn respectively, for instance a ring spinning machine, fly frame, or similar machine for manufacturing yarn or roving from sliver or roving, respectively.
- suction lines (20, 21) include at least local structures controlling airflow. At suction locations (30, 31) of the stretching mechanisms (11) with which the lines are associated, essentially the same pressure conditions are maintained.
- DE3537195 describes a spinning machine producing yams from two fiber associations, which run to a union point at which they are rotated together to form a single yarn.
- the slivers may be made of any non-continuous fibers, preferably made of combed wool.
- the rotation of the yarn can be produced by conventional means, preferably, can rotate by means of a spindle, which penetrates a spinning ring coaxially on which a towed by the yarn runner.
- US 4559773A describes a method and apparatus for restarting a yarn spinning machine, and which is characterized by the ability to be efficiently rethreaded and started after a yarn break, and with the resulting yam having a high quality interconnection in the form of a splice or the like.
- the main disadvantage of the present art is that the spinning machines have at the maximum 4 spinning positions (twisters) in a spinning machine.
- Another disadvantage is that the lay-out of the yarn winding mechanism and bobbins do not enable addition of multiple spinning positions side by side for increasing the machine productivity.
- Yet another disadvantage is that these spinning positions are fed with fibres from a common opening roller or drum, and hence feed cannot be controlled to individual spinning position.
- One more disadvantage is that the fibre feed from the opening dmm is divided into 2 or 4 parts required for individual yarns using 2 or 4 v-channels formed in a plate, which produces fibre strand of varying linear density or mnnage. Further disadvantage is the large size of the opening dmm, which necessitates high energy consumption.
- the object of the invention is to provide a multiple- spindle spinning machine for spinning coarse and long fibres such as coir, sisal, banana, wool etc., in which the concept of spin box is used to feed fibres, open & clean them, assemble and twist into a yarn in a sub- assembly. Multiple numbers of these modular units are mounted side by side to make long spinning machines with multiple spinning positions.
- the object of the invention is to provide a multiple- spindle spinning machine for spinning coarse and long fibres such as coir, sisal, banana, wool etc.
- the invention is related to long spinning machines with multiple spinning positions comprising of a Spin box and yarn winding assembly in each position. Multiple number of these units are mounted side by side to make long spinning machines with multiple spinning positions.
- the machine will have frame structure with reinforcing beams and columns to hold driving assembly, yarn production section with spin boxes & winding assembly and pneumatic suction arrangement.
- the driving assembly comprises of motors with Variable Frequency Drive (VFD) control and drive transmission parts, namely, shafts, gears, pulleys and belt/chain etc., connecting to individual spin boxes.
- VFD Variable Frequency Drive
- the machine also will have a suction arrangement at the other end of the machine to enable use of pneumatic thread catcher, thread-end holder, yarn compacting mechanism etc.
- Spin box is a modular unit, which has functional sub-assemblies to feed fibres, open & clean them, assemble and twist into a yarn with or without a yarn take-up arrangement.
- the invention is related to long spinning machines with multiple spinning positions comprising of a Spin box and yam winding assembly in each position.
- the machine will have frame structure with reinforcing beams and columns to hold driving assembly, yarn production section with spin boxes & winding assembly and pneumatic suction arrangement.
- the driving assembly comprises of motors with Variable Frequency Drive (VFD) control and drive transmission parts, namely, shafts, gears, pulleys and belt/chain etc., connecting to individual spin boxes.
- VFD Variable Frequency Drive
- the machine also will have a suction arrangement at the other end of the machine to enable use of pneumatic thread catcher, thread-end holder, yarn compacting mechanism etc.
- Each spinning position will have spin box, which is used to feed fibres, open & clean them, assemble and twist into a yam in a sub-assembly and a winding assembly to hold and drive a yam bobbin along with a yam traversing and tensioning mechanism.
- FIG 1 shows schematic diagram of Multiple Spindle Spinning machine with Spin boxes
- Figure 2 shows spin box for the Multiple Spindle Coir Spinning machine
- spin boxl is fixed on beam 2 and 2’and yarn winding assembly 3 is fixed above the spin box 1 along with appropriate yam traversing mechanism and a yarn tensioner.
- a separate bobbin holder 4 is fixed to the machine frame in a suitable place near the spin box to feed core yam.
- a thread break stop sensor is fixed between the spin box and winding assembly. This arrangement is repeated for each spinning position in the machine. Total number of spinning positions may vary up to a large number say 200. Feed material is kept in Can 7 in sliver form.
- the box 5 in the left hand side of the machine frame carries the drive part of the machine comprising motor, pulleys, gears and driving belts/chain.
- Feed roller drive shaft, opening roller drive shaft and winding dmm drive shaft are driven by separate motors controlled by VFD.
- Single yam twisters (SYT) are driven by a separate Variable Frequency Drive (VFD) controlled motor through driving belt.
- VFD Variable Frequency Drive
- a spin box comprises of a feed roller 8 with suitable loading device 9, a opening rollerlO, V-Channel 13, a single yarn twister 11 and a yam guide roller 12.
- Feed roller 8, opening roller 10 and winding dmm 3 get their drive from separate driving shafts. Traversing dmm gets its drive from the winding dmm drive shaft.
- Single yarn twister 11 is driven by a driving belt driven by the single yam twister drive motor
- the yam spinning process is happened in the following steps
- STEP1 Fibres are fed to the feed roller in the form of sliver kept in sliver can 7
- Feed roller 8 feeds the opening roller 10 at the required rate and opening roller 10 rotating at a speed required to open the fibre pushes the fibres forward into the V-Channel l3kept below it
- STEP3 Core filament thread is fed from a bobbin 4 kept at a suitable place near the V-Channel
- STEP 4 Core thread is pulled through the V-Channel along with the fibres collected in the V-Channel by the winding drum rotation, which in turn gets twisted by rotation of the single yarn twister 11
- STEP5 The twisted yarn is wound on the bobbin driven by the winding drum 3 and the traversing mechanism distributes the yam on the surface of the bobbin
- Thread break sensor senses the presence of yam in the required position and if yam is absent, a signal is sent to stop the fibre feed for the particular spin box
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Spinning Or Twisting Of Yarns (AREA)
Abstract
The object of the invention is a multiple-spindle spinning machine for spinning coarse and long fibres such as coir, sisal, banana, wool etc.,. The invention is related to long spinning machines with multiple spinning positions comprising of a spin box and yarn winding assembly in each position. Multiple numbers of these units are mounted side by side to make long spinning machines with multiple spinning positions. The machine will have frame structure with reinforcing beams and columns to hold driving assembly, yarn production section with spin boxes & winding assembly and pneumatic suction arrangement. The driving assembly comprises of motors with Variable Frequency Drive (VFD) control and drive transmission parts, namely, shafts, gears, pulleys and belt/chain etc., connecting to individual spin boxes. The machine also will have a suction arrangement at the other end of the machine to enable use of pneumatic thread catcher, thread-end holder, yarn compacting mechanism etc., spin box is a modular unit, which has functional sub-assemblies to feed fibres, open & clean them, assemble and twist into a yarn with or without a yarn take-up arrangement.
Description
MULTI-SPINDLE SLIVER-FED SPINNING MACHINE WITH SPIN BOX MODULES FOR
SPINNING COARSE AND LONG FIBRES SUCH AS COIR AND BANANA
Field of invention;
Present invention relates to a multiple- spindle spinning machine for spinning coarse and long fibers such as coir, sisal, banana, wool etc., in which the concept of spin box is used to feed fibers, open & clean them, assemble and twist into a yarn in a sub-assembly. Multiple numbers of these modular units are mounted side by side to make long spinning machines with multiple spinning positions.
Background of the invention
Yam from coarse fibers like coir, banana etc., is spun in a mechanized spinning machine also known as Automatic Spinning machine, in which opened fibers are made to fall into a V-shaped tray on a core thread fed separately, usually, a synthetic thread. These fibers along with the core thread are twisted together by a twisting device and drawn continuously so that the spinning process takes place without interruption. Since fibres has a free fall into the V-Channel tray from the opening roller above the tray; they float and fall freely on the core thread in the tray without any control.
The spinning machine usually having 2 or 4 spindles produce one or two numbers of 2-ply yams respectively, this will be wound on bobbins using flyer type winding mechanism.
EP 1801271 A describes a core yam spinning machine capable of determining a presence or an absence of a core. Further, the present invention relates to a method for determining the presence or the absence of the core in a core yam.
Furthermore CN2009 88930 Y describes an invention relates to a textile industry, and particularly relates to an automatic machine coir preparation used.
Furthermore US 4669259 A describes a spinning machine having a drafting frame for drafting sliver or roving into roving or yarn respectively, for instance a ring spinning
machine, fly frame, or similar machine for manufacturing yarn or roving from sliver or roving, respectively.
Furthermore DE 10041363 describes a spinning machine which suction lines (20, 21) include at least local structures controlling airflow. At suction locations (30, 31) of the stretching mechanisms (11) with which the lines are associated, essentially the same pressure conditions are maintained.
Furthermore DE3537195 describes a spinning machine producing yams from two fiber associations, which run to a union point at which they are rotated together to form a single yarn.The slivers may be made of any non-continuous fibers, preferably made of combed wool. The rotation of the yarn can be produced by conventional means, preferably, can rotate by means of a spindle, which penetrates a spinning ring coaxially on which a towed by the yarn runner.
Furthermore US 4559773A describes a method and apparatus for restarting a yarn spinning machine, and which is characterized by the ability to be efficiently rethreaded and started after a yarn break, and with the resulting yam having a high quality interconnection in the form of a splice or the like.
The main disadvantage of the present art is that the spinning machines have at the maximum 4 spinning positions (twisters) in a spinning machine. Another disadvantage is that the lay-out of the yarn winding mechanism and bobbins do not enable addition of multiple spinning positions side by side for increasing the machine productivity. Yet another disadvantage is that these spinning positions are fed with fibres from a common opening roller or drum, and hence feed cannot be controlled to individual spinning position. One more disadvantage is that the fibre feed from the opening dmm is divided into 2 or 4 parts required for individual yarns using 2 or 4 v-channels formed in a plate, which produces fibre strand of varying linear density or mnnage. Further disadvantage is the large size of the opening dmm, which necessitates high energy consumption.
Objects of the invention;
The object of the invention is to provide a multiple- spindle spinning machine for spinning coarse and long fibres such as coir, sisal, banana, wool etc., in which the concept of spin box is used to feed fibres, open & clean them, assemble and twist into a yarn in a sub- assembly. Multiple numbers of these modular units are mounted side by side to make long spinning machines with multiple spinning positions.
The object of the invention is to provide a multiple- spindle spinning machine for spinning coarse and long fibres such as coir, sisal, banana, wool etc., The invention is related to long spinning machines with multiple spinning positions comprising of a Spin box and yarn winding assembly in each position. Multiple number of these units are mounted side by side to make long spinning machines with multiple spinning positions.
The machine will have frame structure with reinforcing beams and columns to hold driving assembly, yarn production section with spin boxes & winding assembly and pneumatic suction arrangement. The driving assembly comprises of motors with Variable Frequency Drive (VFD) control and drive transmission parts, namely, shafts, gears, pulleys and belt/chain etc., connecting to individual spin boxes. The machine also will have a suction arrangement at the other end of the machine to enable use of pneumatic thread catcher, thread-end holder, yarn compacting mechanism etc., Spin box is a modular unit, which has functional sub-assemblies to feed fibres, open & clean them, assemble and twist into a yarn with or without a yarn take-up arrangement.
Summary of the invention;
The invention is related to long spinning machines with multiple spinning positions comprising of a Spin box and yam winding assembly in each position. The machine will have frame structure with reinforcing beams and columns to hold driving assembly, yarn production section with spin boxes & winding assembly and pneumatic suction arrangement. The driving assembly comprises of motors with Variable Frequency Drive (VFD) control and drive transmission parts, namely, shafts, gears, pulleys and belt/chain etc., connecting to individual spin boxes. The machine also will have a suction arrangement at the other end of the machine to enable use of pneumatic thread catcher, thread-end holder, yarn compacting mechanism etc. Each spinning position will have spin box, which is used to feed fibres, open
& clean them, assemble and twist into a yam in a sub-assembly and a winding assembly to hold and drive a yam bobbin along with a yam traversing and tensioning mechanism.
Brief description of the drawings;
Figure 1 shows schematic diagram of Multiple Spindle Spinning machine with Spin boxes Figure 2 shows spin box for the Multiple Spindle Coir Spinning machine
Description of the invention;
As shown in Figurel, spin boxl is fixed on beam 2 and 2’and yarn winding assembly 3 is fixed above the spin box 1 along with appropriate yam traversing mechanism and a yarn tensioner. A separate bobbin holder 4 is fixed to the machine frame in a suitable place near the spin box to feed core yam. A thread break stop sensor is fixed between the spin box and winding assembly. This arrangement is repeated for each spinning position in the machine. Total number of spinning positions may vary up to a large number say 200. Feed material is kept in Can 7 in sliver form.
The box 5 in the left hand side of the machine frame carries the drive part of the machine comprising motor, pulleys, gears and driving belts/chain. Feed roller drive shaft, opening roller drive shaft and winding dmm drive shaft are driven by separate motors controlled by VFD. Single yam twisters (SYT) are driven by a separate Variable Frequency Drive (VFD) controlled motor through driving belt.
Right-hand end of the machine 6 houses the pneumatic suction arrangement required for yarn compacting device, thread end holder, thread catcher etc., In Figure 2, a spin box comprises of a feed roller 8 with suitable loading device 9, a opening rollerlO, V-Channel 13, a single yarn twister 11 and a yam guide roller 12. Feed roller 8, opening roller 10 and winding dmm 3 get their drive from separate driving shafts. Traversing dmm gets its drive from the winding dmm drive shaft. Single yarn twister 11 is driven by a driving belt driven by the single yam twister drive motor
The yam spinning process is happened in the following steps
STEP1: Fibres are fed to the feed roller in the form of sliver kept in sliver can 7
STEP2: Feed roller 8 feeds the opening roller 10 at the required rate and opening roller 10 rotating at a speed required to open the fibre pushes the fibres forward into the V-Channel l3kept below it
STEP3: Core filament thread is fed from a bobbin 4 kept at a suitable place near the V-Channel
STEP 4: Core thread is pulled through the V-Channel along with the fibres collected in the V-Channel by the winding drum rotation, which in turn gets twisted by rotation of the single yarn twister 11
STEP5: The twisted yarn is wound on the bobbin driven by the winding drum 3 and the traversing mechanism distributes the yam on the surface of the bobbin
STEP 6: Thread break sensor senses the presence of yam in the required position and if yam is absent, a signal is sent to stop the fibre feed for the particular spin box
Claims
1. A multiple-spindle spinning machine for spinning coarse and long fibres in which each spinning position provided with a spin box (1) wherein spin box comprises of a feed roller (8) with a loading device (9), an opening roller (10), V-Channel (13), a single yarn twister (11) and a yarn guide roller (12), Feed roller (8), opening roller (10 ) and winding drum (3) get their drive from separate driving shafts and traversing drum gets its drive from the winding drum drive shaft, single yam twister (11) is driven by a driving belt driven by the single yam twister drive motor.
2. The multiple-spindle spinning machine as claimed in claim 1, wherein each spinning position of the said machine is provided with a spin box which is used to feed fibres, open & clean them, assemble and twist into a yarn in a sub-assembly with or without a core thread and a winding assembly to hold and drive a yarn bobbin along with a yarn traversing and tensioning mechanism.
3. The multiple- spindle spinning machine as claimed in Claims 1 to 2, wherein the said machine have a frame stmcture with reinforcing beams and columns to hold driving assembly, yarn production section with spin boxes as modular units and winding assembly and pneumatic suction arrangement.
4. The multiple- spindle spinning machine as claimed in Claims 1 to 3, wherein said machine is provided with a driving assembly comprising of motors with Variable Frequency Drive (VFD) control and drive transmission parts, namely, shafts, gears, pulleys and belt/chain connecting to individual spin boxes.
5. The multiple-spindle spinning machine as claimed in claims 1 to 4, wherein said machine further comprises a suction arrangement at the other end of the machine to enable use of pneumatic thread catcher, thread-end holder and yam compacting mechanism.
6. The multiple- spindle spinning machine as claimed in claims 1 to 5 , wherein the said fibres includes such as coir, sisal, banana and wool.
7. The multiple-spindle spinning machine is as claimed in claims 1 to 6, wherein spin box (1) is fixed on beam (2) and (2’ ) and yarn winding assembly (3) is fixed above the spin box 1 along with appropriate yarn traversing mechanism and a yarn tensioner..
8. The multiple-spindle spinning machine as claimed in claims 1 to 7, wherein a separate bobbin holder (4) is fixed to the machine frame in a suitable place near the spin box to feed core yarn and feed material is kept in Can (7) in sliver form
9. The multiple- spindle spinning machine as claimed in claims 1 to 8, wherein machine is provided with a thread break stop sensor which is fixed between the spin box and winding assembly.
10. The multiple-spindle spinning machine as claimed in claims 1 to 9, wherein the spin box is arranged for each spinning position in the said machine and total number of spinning positions is capable of varying up to 200.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201980004269.8A CN111971426A (en) | 2018-02-10 | 2019-02-08 | Multi-spindle sliver-fed spinning machine with spinning box modules for spinning coarse and long fibers such as coconut shell fibers and bananas |
| PH12020500391A PH12020500391A1 (en) | 2018-02-10 | 2020-02-27 | Multi-spindle sliver-fed spinning machine with spin box modules for spinning coarse and long fibres such as coir and banana |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IN201841005092 | 2018-02-10 | ||
| IN201841005092 | 2018-02-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2019155413A1 true WO2019155413A1 (en) | 2019-08-15 |
Family
ID=67548379
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/IB2019/051021 WO2019155413A1 (en) | 2018-02-10 | 2019-02-08 | Multi-spindle sliver-fed spinning machine with spin box modules for spinning coarse and long fibres such as coir and banana |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN111971426A (en) |
| PH (1) | PH12020500391A1 (en) |
| WO (1) | WO2019155413A1 (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3885175A (en) * | 1972-12-23 | 1975-05-20 | Frankl & Kirchner | Electric motor variable speed and control drive |
| US7225605B2 (en) * | 2002-11-20 | 2007-06-05 | Maschinenfabrik Rieter Ag | Modular air spinning frame |
| EP1801271A1 (en) * | 2004-09-16 | 2007-06-27 | Murata Kikai Kabushiki Kaisha | Core yarn spinning machine, method of determining presence or absence of core of core yarn, and method of servicing in core yarn spinning machine |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87214656U (en) * | 1987-10-22 | 1988-09-28 | 天津市纺织工业研究所 | Dust-cage spinning machine |
| DE4309947A1 (en) * | 1993-03-26 | 1994-09-29 | Schlafhorst & Co W | Spinning station on a rotor spinning machine |
| CH694332A5 (en) * | 2000-04-14 | 2004-11-30 | Rieter Ag Maschf | Method and apparatus for producing a yarn with ringgarnähnlichem character. |
| DE102006029056A1 (en) * | 2006-06-24 | 2007-12-27 | Oerlikon Textile Gmbh & Co. Kg | 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 |
| DE102014008814A1 (en) * | 2014-06-11 | 2015-12-17 | Saurer Germany Gmbh & Co. Kg | Semiautomatic open-end rotor spinning machine |
-
2019
- 2019-02-08 CN CN201980004269.8A patent/CN111971426A/en active Pending
- 2019-02-08 WO PCT/IB2019/051021 patent/WO2019155413A1/en active Application Filing
-
2020
- 2020-02-27 PH PH12020500391A patent/PH12020500391A1/en unknown
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3885175A (en) * | 1972-12-23 | 1975-05-20 | Frankl & Kirchner | Electric motor variable speed and control drive |
| US7225605B2 (en) * | 2002-11-20 | 2007-06-05 | Maschinenfabrik Rieter Ag | Modular air spinning frame |
| EP1801271A1 (en) * | 2004-09-16 | 2007-06-27 | Murata Kikai Kabushiki Kaisha | Core yarn spinning machine, method of determining presence or absence of core of core yarn, and method of servicing in core yarn spinning machine |
Non-Patent Citations (2)
| Title |
|---|
| "Formation of Yarn", COIRBOARD, 17 July 2014 (2014-07-17), XP055630031, Retrieved from the Internet <URL:http://coirboard.gov.in/?page_id=1861> * |
| RUI-HUA YANG ET AL.: "Numerical analysis and comparison of airflow in rotors with U and V groove during rotor spinning process", JOURNAL OF ENGINEERED FIBERS AND FABRICS, vol. 11, no. 4, 1 December 2016 (2016-12-01), pages 29 - 35, XP055630024 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111971426A (en) | 2020-11-20 |
| PH12020500391A1 (en) | 2021-01-04 |
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