Classifications

• • D—TEXTILES; PAPER
  • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
  • D01H—SPINNING OR TWISTING
  • D01H1/00—Spinning or twisting machines in which the product is wound-up continuously
  • D01H1/11—Spinning by false-twisting
  • D01H1/115—Spinning by false-twisting using pneumatic means
• • D—TEXTILES; PAPER
  • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
  • D01H—SPINNING OR TWISTING
  • D01H7/00—Spinning or twisting arrangements
  • D01H7/92—Spinning or twisting arrangements for imparting transient twist, i.e. false twist

Definitions

• the invention relates to a method and an apparatus for spinning of staple fiber yarn that is used in the textile industry and particularly in spinning.
• the disadvantage of the method lies in the fact that the twisting air vortex in the vortex chamber is limited to receive more effective twists of the yarn due to slippage which leads to a greater consumption of high- pressure air.
• This invention aims to create a method for spinning staple fiber yarn in which a great amount of loose fiber ends is produced, which are subsequently twisted by the strong torque of the high-speed friction device where a strong structure of yarn is formed at high-speed of spinning and low energy consumption.
• the task is solved by a method for yarn spinning from staple fibers as per Claim 1.
• solution of this task is the implementation of a method in which the fibrous sliver after the drawing line passes through the access chamber and enters a pulling zone where the loose ends of fibers are being twisted from the main fibers and then are being twisted by a mechanical high-speed torque created by a false twisting apparatus after which as a result of the combing process, a yarn with uniform structure is being produced; afterwards the yarn passes through a quality-assurance sensor.
• this method can also be achieved through one or more of the following steps, separately and/or in combination.
• the fibrous sliver enters the access chamber, then in the twisting zone the rear ends of the fastening fibers are pulled as a result of the centrifugal forces of the twisting vortex and by the strong vacuum produced in the twisting zone as a vacuum source within the chamber where a separating element is placed which may also be perforated.
• Another method of the invention consists of the following: the main fibers are strongly twisted under the impact of the mechanical torque produced by a false twisting apparatus and the spread of the torques within the access chamber is limited by a blocking element formed at the end of this access chamber.
• Another implementation of the invention method is that after the false twisting apparatus, as a result of the combing, the fastening ends of the fibers are strongly twisted around the main fibers which produces a yarn with uniform structure at low energy consumption and at a high speed of spinning.
• Another method is the follo ing - as a result of the yarn friction in the false twisting device, the fibers are densely compacted within the yarn texture which leads to lower hairiness and separation of the fuzz from the
• the trajectory and the compaction of the main fibers and the forces of pulling and wrapping of the loose ends can be changed and the incoming fibrous sliver can consist of natural fibers or of mixtures with chemical fibers, and also the twisting process provided by the twisting roller can be selected according to the yarn type;
• this method includes a spinning device consisting of an access chamber the front end of which covers the periphery of the pulling roller and at the rear end of the access chamber there comes a blocking element produced by the torques; this roller then enters the chamber for pulling the fastening ends of the fibers and at which rear end a vacuum chamber where a separating element is placed which may also be perforated; is formed a false twisting apparatus for twisting the main fibers is mounted behind the spinning device with a quality-assurance sensor placed behind.
• a different implementation of the invention consists of a sleeve containing the access chamber of which the gate is moved below the pulling axle and below the axle of the twisting chamber, and at the end of the sleeve there are tangential openings for the production of air vortex, and by the end of the access chamber there is a blocking element.
• the chamber for twisting the fastening fibers is behind the end of the access chamber which contains a blocking element for the torques and which ends with a vacuum chamber.
• the device for false twisting used for twisting the main fibers is mounted near the spinning device and is similar to the friction devices used for texturing synthetic silks such as a corpus with three mounted moving rollers and a number of friction disks placed in a special way so that they form an equilateral triangle through which the yarn passes directed by the drives.
• Another method is the following: the pulling roller and the device for false twisting have individual drive-up systems.
• the advantage of this method herein is the fact that there is a very high-speed mechanical torque produced by the rotating friction device which results in safe and tight twisting of the yarn.
• Another advantage is the fact that the twisting zone keeps fibers.
• Another advantage is that fastening fibers are preliminary formed in the fibrous sliver protruding through the twisted main ones.
• Figure 1 - a schematic plan of the spinning device in one, uniform process
• Figure 2- a schematic plan of the vertical section of the feeding roller, the combing and pulling device and the spinning device
• Figure 3 a schematic vertical section of the spinning device and of the friction twisting device
• Figure 4 - a schematic horizontal section of the spinning device and of the friction twisting device
• Figure 5a - a schematic plan of the vortex method of spinning
• Figure 5b - a schematic plan of the air nozzle method of spinning
• Figures 6 - a schematic plan of another variant of the spinning device with friction twisting apparatus.
• Figure 7 - a schematic plan of another variant of the spinning device with an air nozzle twisting device
• Figure 8a and 8b- a cross-section through the tangentially twisting openings of the access chamber
• Figures 10a and 10b possible various variants of the friction twisting device for false torque with two endless belts and with two friction rollers.
• the fibrous sliver 13 after the drawing line 0-0 passes through the access chamber 36 and enters the twisting zone s1 where the loose ends of the fibers m are being pulled by the main fibers n, and they are being twisted by a highspeed torque M produced by the false twisting device 8, after which as a result of the combing process, a yarn 14 with uniform structure, low consumption of energy and a high speed of spinning is produced which then passes through the quality-assurance sensor 15.
• the fibrous sliver 13 enters the access chamber 36 and after the twisting zone s1 at the ends of the fastening fibers m where the pulling of the rear fiber ends m is formed, as a result of the centrifugal forces of the vortex ⁇ and by the strong vacuum created in the pulling zone s1 by the vacuum source within chamber 37 where a separating element 58 is placed which may also be perforated.
• the main fibers n are tightly twisted under the high-speed torque M produced by the false twisting device 8 and the spread of the torques within the access chamber 36 is limited by the blocking element 38 formed at the rear end of the chamber 36.
• the quality of the produced yarn 14 is being evaluated by a sensor 15 and defects, if any, are being removed.
• the trajectory and the compaction of the main fibers n and the twisting and combing forces of the loose ends m may be altered and the access fibrous sliver 13 may consist of natural fibers or of mixtures of chemical fibers, and also the spinning process provided by the spinning device 8 may be selected as per the yarn type 14.
• the apparatus for the method implementation after the drawing line 0-0 contains a spinning device 7 consisting of an access chamber 36, the front end of which covers a section of the periphery of the pulling roller 32 or 32' and at the rear end of this chamber 36 there is a blocking element for the torques 38 which enters the pulling chamber s1 placed behind for the fastening ends of the fibers m, at the end of which there is a vacuum chamber 37 where a separating element 58 is placed which may also be perforated and behind the spinning device 7 there is a false twisting device 8 for twisting the main fibers n and a quality-assurance sensor 15 for the yarn quality 14.
• a spinning device 7 consisting of an access chamber 36, the front end of which covers a section of the periphery of the pulling roller 32 or 32' and at the rear end of this chamber 36 there is a blocking element for the torques 38 which enters the pulling chamber s1 placed behind for the fastening ends of the fibers m, at the end of which there is a vacuum chamber 37 where
• Sleeve 61 contains an access chamber 36 the gate of which has been moved below or over the pulling axle 0-0 and below or over the pulling chamber axle s1 , and at the end of this sleeve 61 there are tangential openings 57 for air vortex ⁇ and at the end of the access chamber 36 there is a blocking element 38.
• the chamber for pulling the fastening fibers s1 is placed at the end of the access chamber 36 which accepts the blocking element for the torques 38 and ends at the end of the vacuum chamber 37.
• the false twisting device 8 for twisting the main fibers n is mounted near the spinning device 7 and similar to the friction disks for texture of synthetic silk fibers, such as corpus 17 which contains three moving rollers with friction disks 40 specially placed upon, so that they form an equilateral triangle in the middle through which the ready yarn 14 passes, directed by the drivers 16 and 18.
• the pulling roller 32 and the false twisting device 17 contain individual drive-ups M2 and M3. Application of the Invention
• the method and the apparatus for spinning yarn of staple fibers is executed when the fibrous sliver 13 enters the adcess chamber 36 where the spread of the torques is limited by the blocking element 38 located in the twisting zone ⁇ and in the pulling zone s1 at the front end of which the rear ends of the fastening fibers m are being pulled by the main fibers as a result of the centrifugal forces created by the air vortex ⁇ and by the strong vacuum in chamber 37 and are subsequently twisted by a mechanical high-speed torque M produced by a false twisting device 8; as a result of combing, yam 14 with uniform texture is formed and chamber 37 contains a separating element 58 which may also be perforated.
• the idea behind this invention is that it also contains modifications and alterations which may be executed by using similar methods as described above without departing from the scope and spirit of the invention as set forth in those claims.

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

Applications Claiming Priority (2)

Publications (1)

Family

ID=55858731

Family Applications (1)

Country Status (2)

Citations (10)

• 2015
  • 2015-04-20 BG BG111987A patent/BG111987A/bg unknown
• 2016
  • 2016-03-17 WO PCT/BG2016/000008 patent/WO2016168904A1/en active Application Filing

Patent Citations (10)

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