CN112251868A - Device and method for continuously preparing nanofiber core-spun yarn - Google Patents
Device and method for continuously preparing nanofiber core-spun yarn Download PDFInfo
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- CN112251868A CN112251868A CN202011168266.9A CN202011168266A CN112251868A CN 112251868 A CN112251868 A CN 112251868A CN 202011168266 A CN202011168266 A CN 202011168266A CN 112251868 A CN112251868 A CN 112251868A
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- 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
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/0007—Electro-spinning
- D01D5/0061—Electro-spinning characterised by the electro-spinning apparatus
- D01D5/0069—Electro-spinning characterised by the electro-spinning apparatus characterised by the spinning section, e.g. capillary tube, protrusion or pin
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
- Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
Abstract
The invention relates to a device and a method for continuously preparing nano-fiber core-spun yarns, which comprises a rack, and a high-voltage alternating electric field spinning system and a core-spun yarn forming system which are arranged on the rack, wherein the high-voltage alternating electric field spinning system is arranged at the lower part of the core-spun yarn forming system and is used for forming nano-fiber bundles and spraying the nano-fiber bundles onto core yarns; the core-spun yarn forming system is used for inputting, twisting and outputting core yarns, and the high-voltage alternating electric field spinning system and the core-spun yarn forming system are connected to the control box. The invention has the advantages that: the high-voltage alternating electric field is adopted, and the nanofiber bundle can be generated through the design of the spinning nozzle, so that the yield of the electrospinning is greatly increased, and the collection of the nanofibers is facilitated. The core-spun yarn is formed by collecting the nanofiber bundle by adopting a core yarn balloon wrapping technology, so that the efficient and orderly collection of the nanofibers is facilitated.
Description
Technical Field
The invention relates to a device and a method for continuously preparing nano-fiber core-spun yarns, and relates to the technical field of electrostatic spinning and spinning.
Background
The nanofiber prepared by electrostatic spinning has excellent performance and has wide application prospect in the fields of air filtration, protection, energy, electronic devices, bioengineering and the like. However, there are two technical problems that prevent the industrial application of electrospun nanofibers: firstly, the yield of the nano-fiber prepared by the traditional electrostatic spinning technology is low, and the huge demand of industrialization on the nano-fiber material is difficult to meet; and secondly, the nano-fiber is constructed into a stable 3D structure without equipment and technology for processing the nano-fiber in batch. Therefore, the invention adopts the high-voltage alternating electric field pinless spinning technology to continuously prepare the nano-fiber core-spun yarn with certain mechanical property at high speed, and is favorable for realizing the industrial application of the nano-fiber material by means of the textile processing technology.
At present, the research of continuously collecting nano fibers in a fiber bundle form at home and abroad mainly focuses on six aspects: firstly, preparing superfine fiber bundles by utilizing a conjugated electrostatic spinning technology and using a spinning nozzle which is relatively prepared and has opposite potential; secondly, inducing self-binding phenomenon among the nano fibers by using the grounded needle point to form a fiber bundle; thirdly, depositing the electrostatic spinning nano-fiber in a reservoir by using a liquid coagulation bath method, and then collecting the nano-fiber bundle on a rotary roller to form yarn; fourthly, the nano-fiber yarns are collected by adopting a spinneret and an ungrounded collector which are oppositely arranged and have opposite voltages; fifthly, the nanofiber bundle is pulled onto the roller by adopting an insulating rod, the funnel-type collecting device is used for twisting the nanofiber bundle, and the nanofiber bundle is wound onto the roller in the form of yarn. And sixthly, the fiber wrapping yarn, wherein the core layer adopts common filament yarn, and the surface layer wraps the nano fiber to form yarn.
In summary, despite many methods for electrospinning yarns, the needle electrospinning is mainly used at present, and the yield of nanofiber yarns is low; the mechanical properties of the prepared yarn cannot meet the requirements of processing and application due to disordered nano fibers.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides a device and a method for continuously preparing nano-fiber core-spun yarns, and the technical scheme of the invention is as follows:
a device and method for continuously preparing nano-fiber core-spun yarns comprise a rack, and a high-voltage alternating electric field spinning system and a core-spun yarn forming system which are arranged on the rack, wherein the high-voltage alternating electric field spinning system is arranged at the lower part of the core-spun yarn forming system and is used for forming nano-fiber bundles and spraying the nano-fiber bundles onto core yarns; the core-spun yarn forming system is used for inputting, twisting and outputting core yarns, and the high-voltage alternating electric field spinning system and the core-spun yarn forming system are connected to the control box.
The high-voltage alternating electric field spinning system comprises a high-voltage alternating current power supply, a spinning nozzle, a constant-current peristaltic pump and a spinning solution storage box, wherein a liquid inlet of the constant-current peristaltic pump is communicated with the spinning solution storage box through a liquid inlet pipe, a liquid outlet of the constant-current peristaltic pump is communicated with the spinning nozzle through a liquid outlet pipe, the spinning nozzle is arranged in the vertical direction, and the nozzle direction of the spinning nozzle faces to the area where core yarns pass.
The spinneret include metal conduit and insulating joint, the lower extreme of metal conduit with the drain pipe intercommunication, the upper end of this metal conduit install the insulating joint in the insulating joint in bury several conductive filaments, each conductive filament set up in insulating joint slope, each conductive filament's upper end is located the upper surface that insulating joint, the lower extreme with the metal conduit link to each other, high-voltage alternating current power supply and metal conduit pass through the wire and link to each other.
The core-spun yarn forming system comprises a core yarn feeding mechanism, a twisting mechanism and a winding mechanism which are sequentially arranged along the input direction of the core yarn, wherein the core yarn feeding mechanism is positioned on one side of the rack, the winding mechanism is positioned on the other side of the rack, and the twisting mechanism is positioned between the core yarn feeding mechanism and the winding mechanism.
The core yarn feeding mechanism comprises a support frame and a tensioning frame, and the support frame and the tensioning frame are arranged adjacently.
The twisting mechanism comprises a winding motor and twisters, the two twisters are symmetrically arranged on the rack, each twister is provided with an eccentric yarn channel, the twisters are rotatably arranged on the rack through bearings, driven belt pulleys are arranged on the twisters, a driving belt pulley is arranged on the rack at the lower part of the driven belt pulley, and the driving belt pulley is in transmission connection with the driven belt pulley through a belt; the driving belt pulley is driven by a winding motor.
Winding mechanism include the winding roller, compress tightly roller and guide roll, the compression roller be one, the winding roller be a pair of, this winding roller is triangle-shaped with the compression roller and arranges, the copper pipe of winding core yarn is located the winding roller and compresses tightly the space that forms between the roller, the guide roll with the adjacent setting of winding roller.
The conductive wire is a metal wire or a carbon fiber.
A yarn manufacturing method based on a device and a method for continuously preparing nano-fiber core-spun yarns comprises the following steps:
(1) twisting after inputting the yarn;
(2) spraying a spinning solution while twisting the yarn;
(3) the spinning solution is sprayed with positive and negative charges and forms a nanofiber bundle in the spraying process, and the nanofiber bundle and the yarns are gathered together to form the core-spun yarn;
(4) and finishing the output of the core-spun yarn.
Before the step (4), the step of guiding the core-spun yarn is further included.
The invention has the advantages that:
the high-voltage alternating electric field is adopted, and the nanofiber bundle can be generated through the design of the spinning nozzle, so that the yield of the electrospinning is greatly increased, and the collection of the nanofibers is facilitated. The core-spun yarn is formed by collecting the nanofiber bundle by adopting a core yarn balloon wrapping technology, so that the efficient and orderly collection of the nanofibers is facilitated.
Drawings
Fig. 1 is a schematic view of the main structure of the present invention.
FIG. 2 is a schematic view of the spinneret of FIG. 1.
Fig. 3 is a top view of fig. 2.
Fig. 4 is a schematic structural view of the twisting mechanism in fig. 1.
Detailed Description
The invention will be further described with reference to specific embodiments, and the advantages and features of the invention will become apparent as the description proceeds. These examples are illustrative only and do not limit the scope of the present invention in any way. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention, and that such changes and modifications may be made without departing from the spirit and scope of the invention.
Referring to fig. 1 to 4, the present invention relates to an apparatus for continuously preparing a nanofiber core spun yarn, comprising a frame 1, and a high voltage alternating electric field spinning system and a core spun yarn forming system which are installed on the frame 1, wherein the high voltage alternating electric field spinning system is installed at the lower part of the core spun yarn forming system, and the high voltage alternating electric field spinning system is used for forming a nanofiber bundle to be sprayed on a core yarn 16; the core-spun yarn forming system is used for inputting, twisting and outputting the core yarn 16, and the high-voltage alternating electric field spinning system and the core-spun yarn forming system are connected to a control box.
The high-voltage alternating electric field spinning system comprises a high-voltage alternating current power supply 2, a spinning nozzle 6, a constant-current peristaltic pump 4 and a spinning solution storage box 5, wherein a liquid inlet of the constant-current peristaltic pump 4 is communicated with the spinning solution storage box 5 through a liquid inlet pipe, a liquid outlet of the constant-current peristaltic pump is communicated with the spinning nozzle 6 through a liquid outlet pipe, the spinning nozzle 6 is arranged in the vertical direction, and the direction of a nozzle of the spinning nozzle 6 faces to an area through which a core yarn 16 passes.
Spinneret 6 include metal conduit 21 and insulating joint 22 (the program of this insulating head is the loudspeaker form setting), the lower extreme of metal conduit 21 with the drain pipe intercommunication, install the upper end of this metal conduit 1 insulating joint 22 (for example the material that this insulating joint can be for polytetrafluoroethylene) insulating joint 22 in the embedding have several conductive filament 23, each conductive filament set up at insulating joint 22 internal slope, each conductive filament 23's upper end is located the upper surface that insulating joint 22 was first, the lower extreme with metal conduit 21 link to each other, high voltage alternating current power supply 2 and metal conduit 21 pass through the wire and link to each other.
The high-voltage alternating current power supply is electrically connected with the spinning nozzle to generate three main functions: firstly, a high-voltage alternating electric field is formed around the spinning nozzle, secondly, the surface of the spinning solution at the spinning nozzle is alternately charged with positive and negative charges, and thirdly, ion wind is formed by high-voltage discharge of the tip of the metal wire or the carbon fiber at the position of the spinning nozzle. The charged solution is stretched by electric field force to generate multiple jet flows, the solvent is volatilized in the jet flows at high speed to form nanofiber bundles, and the nanofiber bundles are gathered into bundles under the blowing of ion wind and are conveyed outwards along the axial direction of the spinning nozzle.
The core-spun yarn forming system comprises a core yarn feeding mechanism, a twisting mechanism and a winding mechanism which are sequentially arranged along the input direction of the core yarn 16, wherein the core yarn feeding mechanism is positioned on one side of the rack, the winding mechanism is positioned on the other side of the rack 1, and the twisting mechanism is positioned between the core yarn feeding mechanism and the winding mechanism.
The core yarn feeding mechanism comprises a supporting frame 8 and a tensioning frame 9, wherein the supporting frame 8 is arranged adjacent to the tensioning frame 9.
The twisting mechanism comprises a winding motor 3 and two twisters 19, the two twisters 19 are symmetrically arranged on the rack 1, each twister 19 is provided with an eccentric yarn channel 20, the twisters 19 are rotatably arranged on the rack 1 through bearings, the twisters 19 are provided with driven belt pulleys 7, the rack 1 at the lower parts of the driven belt pulleys 7 is provided with a driving belt pulley 10, and the driving belt pulley 10 is in transmission connection with the driven belt pulleys 7 through a belt 11; the driving pulley 10 is driven by the winding motor 3.
Winding mechanism include winding roller 13, compress tightly roller 15 and guide roll, compressing tightly roller 15 be one, winding roller 13 be a pair of, this winding roller 13 and compressing tightly roller 15 are triangle-shaped and arrange, the copper pipe 14 of winding core yarn is located the space that forms between winding roller and the compressing tightly roller, the guide roll with winding roller 13 adjacent setting.
The conductive wire is a metal wire or a carbon fiber.
Wherein, the support frame of core yarn feeding mechanism provides the support for core yarn circumference backing-off, and the tensioning frame provides tension for the core yarn. The high speed rotation of the twister of the twisting mechanism causes the core yarn to form a balloon between two eccentric channels, this region being called the twisting zone. The air ring formed by the core yarn is about 15cm away from the spinneret, and the nanofiber bundle is wound on the core yarn under the action of the air ring to form the core-spun yarn. The twisting of the yarn is realized by adjusting the rotating speed of the motor of the twister and the rotating speed of the winding motor. The winding mechanism is used for outputting the core-spun yarns, the bobbin passively rotates under the combined action of the winding roller and the pressing roller, and the core-spun yarns are uniformly wound on the bobbin through the guide roller, so that the continuous production of the core-spun yarns with the nano-fiber wrapped filaments is realized, and the efficient and orderly collection of the nano-fibers is facilitated.
The invention also relates to a yarn manufacturing method based on the device and the method for continuously preparing the nanofiber core-spun yarn, which comprises the following steps:
(1) twisting after inputting the yarn;
(2) spraying a spinning solution while twisting the yarn;
(3) the spinning solution is sprayed with positive and negative charges and forms a nanofiber bundle in the spraying process, and the nanofiber bundle and the yarns are gathered together to form the core-spun yarn;
(4) and finishing the output of the core-spun yarn.
Before the step (4), the step of guiding the core-spun yarn is further included.
Claims (10)
1. The device and the method for continuously preparing the nanofiber core-spun yarn are characterized by comprising a rack, and a high-voltage alternating electric field spinning system and a core-spun yarn forming system which are arranged on the rack, wherein the high-voltage alternating electric field spinning system is arranged at the lower part of the core-spun yarn forming system and is used for forming a nanofiber bundle and spraying the nanofiber bundle onto a core yarn; the core-spun yarn forming system is used for inputting, twisting and outputting core yarns, and the high-voltage alternating electric field spinning system and the core-spun yarn forming system are connected to the control box.
2. The device and the method for continuously preparing the nanofiber core-spun yarn according to claim 1, wherein the high-voltage alternating electric field spinning system comprises a high-voltage alternating current power supply, a spinning nozzle, a constant-current peristaltic pump and a spinning solution storage box, a liquid inlet of the constant-current peristaltic pump is communicated with the spinning solution storage box through a liquid inlet pipe, a liquid outlet of the constant-current peristaltic pump is communicated with the spinning nozzle through a liquid outlet pipe, the spinning nozzle is arranged along a vertical direction, and a nozzle direction of the spinning nozzle faces to a region where the core yarn passes through.
3. The apparatus and method according to claim 2, wherein the spinneret includes a metal guide tube and an insulation joint, the lower end of the metal guide tube is connected to the liquid outlet tube, the insulation joint is installed at the upper end of the metal guide tube, a plurality of conductive wires are embedded in the insulation joint, each conductive wire is disposed in the insulation joint in an inclined manner, the upper end of each conductive wire is located on the upper surface of the insulation joint, the lower end of each conductive wire is connected to the metal guide tube, and the high voltage ac power supply is connected to the metal guide tube through a wire.
4. The apparatus and method according to claim 2 or 3, wherein the core-spun yarn forming system comprises a core yarn feeding mechanism, a twisting mechanism and a winding mechanism sequentially arranged along the input direction of the core yarn, the core yarn feeding mechanism is located at one side of the frame, the winding mechanism is located at the other side of the frame, and the twisting mechanism is located between the core yarn feeding mechanism and the winding mechanism.
5. The apparatus and method of claim 4, wherein the core yarn feeding mechanism comprises a support frame and a tension frame, the support frame is disposed adjacent to the tension frame.
6. The apparatus and method according to claim 4, wherein the twisting mechanism comprises a winding motor and two twisters symmetrically disposed on the frame, each twister is provided with an eccentric yarn channel, the twisters are rotatably mounted on the frame via bearings, the twisters are provided with driven pulleys, a driving pulley is mounted on the frame below the driven pulleys, and the driving pulley is in belt transmission connection with the driven pulleys; the driving belt pulley is driven by a winding motor.
7. The apparatus and method according to claim 4, wherein the winding mechanism comprises a winding roller, a pair of pressing rollers, a pair of winding rollers, a triangular arrangement of the winding roller and the pressing roller, a copper tube for winding the core yarn is located in a space formed between the winding roller and the pressing roller, and a guide roller disposed adjacent to the winding roller.
8. The apparatus and method for continuously preparing a nanofiber core spun yarn as claimed in claim 2, wherein the conductive filament is a metal filament or a carbon fiber.
9. A yarn manufacturing method based on the apparatus for continuously manufacturing a nanofiber core spun yarn and the method thereof according to any one of claims 1 to 8, characterized by comprising the steps of:
(1) twisting after inputting the yarn;
(2) spraying a spinning solution while twisting the yarn;
(3) the spinning solution is sprayed with positive and negative charges and forms a nanofiber bundle in the spraying process, and the nanofiber bundle and the yarns are gathered together to form the core-spun yarn;
(4) and finishing the output of the core-spun yarn.
10. The method of claim 9, further comprising the step of guiding the core spun yarn before said step (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011168266.9A CN112251868A (en) | 2020-10-28 | 2020-10-28 | Device and method for continuously preparing nanofiber core-spun yarn |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011168266.9A CN112251868A (en) | 2020-10-28 | 2020-10-28 | Device and method for continuously preparing nanofiber core-spun yarn |
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| Publication Number | Publication Date |
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| CN112251868A true CN112251868A (en) | 2021-01-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011168266.9A Withdrawn CN112251868A (en) | 2020-10-28 | 2020-10-28 | Device and method for continuously preparing nanofiber core-spun yarn |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113943990A (en) * | 2021-11-12 | 2022-01-18 | 武汉纺织大学 | Core-spun spinning device and new-structure core-spun spinning method with completely wrapped macro cores |
| CN115323510A (en) * | 2022-08-31 | 2022-11-11 | 徐州天虹银丰纺织有限公司 | Fiber yarn spinning device and spinning process thereof |
-
2020
- 2020-10-28 CN CN202011168266.9A patent/CN112251868A/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113943990A (en) * | 2021-11-12 | 2022-01-18 | 武汉纺织大学 | Core-spun spinning device and new-structure core-spun spinning method with completely wrapped macro cores |
| CN115323510A (en) * | 2022-08-31 | 2022-11-11 | 徐州天虹银丰纺织有限公司 | Fiber yarn spinning device and spinning process thereof |
| CN115323510B (en) * | 2022-08-31 | 2023-09-08 | 徐州天虹银丰纺织有限公司 | Fiber yarn spinning device and spinning process thereof |
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Application publication date: 20210122 |
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