Electrospinning nanofiber self-spinning yarn preparation device and preparation method

Abstract

The application provides a device and a method for preparing electrospinning nanofiber self-rotating yarn, and belongs to the technical field of nanofiber preparation. The device comprises an electrospinning nozzle, the electrospinning nozzle is installed at the injection end of a solution injector, the advancing end of the solution injector is connected with a solution suction and pushing mechanism, the suction and injection of liquid are realized through the driving of the solution suction and pushing mechanism, the solution suction and pushing mechanism, the solution injector and the electrospinning nozzle are rotated by the self-rotating mechanism of the electrospinning nozzle; the self-rotating mechanism of the electrospinning nozzle is installed on the electrospinning nozzle lifting mechanism, the electrospinning nozzle lifting mechanism is installed on the electrospinning nozzle traversing mechanism; a yarn receiving roller is arranged below the electrospinning nozzle. The electrospinning nozzle cooperates with the electrospinning nozzle traversing mechanism, the self-rotating mechanism of the electrospinning nozzle and the yarn receiving roller to realize self-rotating twisting and direct yarn forming, so as to ensure the original function and the advantages of nanofiber.

Description

Technical Field

[0001] The present invention belongs to the technical field of nanofiber preparation, and in particular relates to a device and method for preparing electrostatically spun nanofiber self-rotating yarn. Background Art

[0002] Electrospinning is the most direct and effective method to use a high voltage electric field to stretch a polymer solution or melt to form nanofibers.

[0003] At present, the main electrospinning technologies include needle-type electrospinning technology and needle-free electrospinning technology. In comparison, needle-free electrospinning technology has a higher output, but since the spinning jet excited by the emitter in needle-free electrospinning technology is mostly difficult to control, it is generally used to prepare nanofiber membranes. In the preparation technology of electrospun nanofiber yarn, needle-type electrospinning technology is generally used. For example, the patent with publication number CN116254628A discloses a spinning device for rotor spinning a coated yarn with an outer layer of nanofibers, and the patent with publication number CN 220907787 U discloses a nanofiber wrapped yarn device based on high-voltage AC electrospinning. However, the yarns generated by the above-mentioned types of electrospinning nanofiber yarn preparation devices are all coated yarns, which require a core yarn in the middle. The yarn cannot be directly spun out of the electrospun fiber, thereby reducing the fiber structure advantage of the electrospun fiber itself. Summary of the Invention

[0004] The problem to be solved by the present invention is to provide a device and method for preparing electrostatically spun nanofiber self-rotating yarn.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is: an electrospinning nanofiber self-rotating yarn preparation device, comprising an electrospinning nozzle, wherein the electrospinning nozzle is installed on the injection end of the solution syringe, and the propulsion end of the solution syringe is connected to the solution suction and push mechanism, and the solution syringe realizes the suction and ejection of liquid by the drive of the solution suction and push mechanism; the solution suction and push mechanism is installed on the electrospinning nozzle self-rotating mechanism, and the electrospinning nozzle self-rotating mechanism drives the solution suction and push mechanism, the solution syringe and the electrospinning nozzle to rotate; the electrospinning nozzle self-rotating mechanism is installed on the electrospinning nozzle lifting mechanism, and the electrospinning nozzle lifting mechanism is installed on the electrospinning nozzle traverse mechanism; a yarn receiving roller is arranged under the electrospinning nozzle.

[0006] Furthermore, a solution reservoir is provided on one side of the electrospinning nozzle. When the solution syringe needs to absorb liquid, the electrospinning nozzle lifting mechanism drives the electrospinning nozzle to move up and down to immerse the electrospinning nozzle in the solution reservoir.

[0007] Furthermore, the center axis of the yarn receiving roller is parallel to the reciprocating motion direction of the electrospinning nozzle traverse mechanism; the yarn receiving roller is driven by an active motor through a transmission belt; a high-voltage DC positive power supply is connected to the electrospinning nozzle, and a high-voltage DC negative power supply is connected to the yarn receiving roller.

[0008] Furthermore, the electrostatic spinning nozzle self-rotating mechanism includes a rotating shaft, one end of which is driven to rotate by a rotating motor, and the other end is equipped with an end fixing seat, the rotating motor is installed and fixed on the rotating motor fixing seat, and the electrostatic spinning nozzle self-rotating mechanism is fixedly connected to the electrostatic spinning nozzle lifting mechanism through the rotating motor fixing seat.

[0009] Furthermore, the solution suction and push mechanism includes a suction and push screw, which is driven to rotate by a suction and push motor, and a screw nut is installed on the suction and push screw. The suction and push motor is installed and fixed on the suction and push motor fixing seat, and the suction and push motor fixing seat is installed and fixed on the end fixing seat of the electrostatic spinning nozzle self-rotation mechanism. The solution suction and push mechanism is fixedly connected to the electrostatic spinning nozzle self-rotation mechanism through the suction and push motor fixing seat.

[0010] Furthermore, the solution syringe includes an injection cylinder and an injection push rod, the injection cylinder is connected and fixed to the end fixing seat of the electrospinning nozzle self-rotating mechanism through a connecting rod, the push piece at the end of the injection push rod is inserted into the groove of the push seat, so that the injection push rod is connected and fixed to the push seat, and the push seat is connected and fixed to the screw nut of the solution suction and push mechanism, and the injection push rod is driven to rise and fall by the screw nut, thereby realizing the suction and injection of the solution by the solution syringe.

[0011] Furthermore, a conductive slip ring is installed on the rotating shaft, and the wires of the suction and push motor of the solution suction and push mechanism are led out through the conductive slip ring to avoid entanglement of the wires.

[0012] Furthermore, the electrospinning nozzle includes a multi-channel distribution structure, a vertical holding structure and peripheral drainage holding blades, the vertical holding structure and the peripheral drainage holding blades 703 are located on the output side of the multi-channel distribution structure, and four peripheral drainage holding blades are arranged around the vertical holding structure.

[0013] Furthermore, the multi-channel distribution structure includes a straight tube body, and the interior of the straight tube body is evenly provided with inclined drainage channels; the vertical gripping structure includes a gripping piece, and the gripping piece is arranged corresponding to the inclined drainage channel; the peripheral drainage gripping blade is provided with a drainage center seam at the central axial position, and the peripheral drainage gripping blades are evenly distributed in the middle position of the gripping piece gap and are arranged crosswise with the gripping piece; the side surface of the peripheral drainage gripping blade is an arc convex outward, and the bottom of the peripheral drainage gripping blade is arranged with a pointed end.

[0014] The present invention also provides a method for preparing electrospun nanofiber self-rotating yarn, comprising the following steps:

[0015] S1. Pour the electrospinning solution into the solution reservoir, the electrospinning nozzle lifting mechanism drives the electrospinning nozzle to rise, the electrospinning nozzle traverse mechanism drives the electrospinning nozzle to traverse to above the solution reservoir, the electrospinning nozzle lifting mechanism drives the electrospinning nozzle to descend, and immerse the electrospinning nozzle to the bottom of the solution reservoir;

[0016] S2, the solution suction and push mechanism drives the injection push rod to rise, so that the solution syringe is filled with solution, the electrospinning nozzle lifting mechanism drives the electrospinning nozzle to rise, and the electrospinning nozzle traverse mechanism drives the electrospinning nozzle to traverse to above one end of the yarn receiving roller;

[0017] S3. The yarn receiving roller starts to rotate, the high-voltage DC positive power supply and the high-voltage DC negative power supply are energized, the solution suction and push mechanism pushes the solution syringe to start supplying liquid to the electrospinning nozzle, and the electrospinning jet begins to form and stretch into nanofibers. At the same time, the electrospinning nozzle self-rotating mechanism starts to work, driving the electrospinning nozzle to rotate, realizing automatic twisting of the nanofibers. During rotation, the electrospinning nozzle transverse movement mechanism also starts to reciprocate, winding the formed yarn onto the yarn receiving roller, completing the yarn collection.

[0018] Due to the adoption of the above technical solution, the present invention has the following beneficial effects:

[0019] The electrospinning nozzle of the present invention cooperates with the electrospinning nozzle traverse mechanism, the electrospinning nozzle self-rotation mechanism and the yarn receiving roller to realize direct yarn formation by self-rotation twisting, thereby ensuring the original function and inherent advantages of the nanofiber.

[0020] The solution injector, solution suction and push mechanism, solution storage tank, electrospinning nozzle lifting mechanism and electrospinning nozzle traverse mechanism of the present invention can realize automatic replacement of electrospinning solution to achieve batch preparation of yarns.

[0021] When the electrospinning nozzle of the present invention is jetting, the straight tube body can solve the problem of easy clogging in the prior art, and is suitable for electrospinning of high-concentration spinning solution systems; the inclined drainage channel allows the spinning solution to be evenly diverted through the channel, while preventing the spinning solution from flowing too fast and affecting the final spinning effect; the peripheral drainage holding blades and the holding pieces are cross-arranged to increase the holding ability of the spinning solution surface, and the drainage center seam not only drains the spinning solution to the bottom tip position, but also plays a role in increasing the holding liquid level, and the tip at the bottom of the peripheral drainage holding blade can play a role in gathering charges, and can stably excite multiple spinning jets. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention will be described in detail below with reference to the accompanying drawings and in combination with examples, and the advantages and implementation modes of the present invention will become more apparent. The contents shown in the accompanying drawings are only used to illustrate the present invention and do not constitute any limitation to the present invention. In the accompanying drawings:

[0023] Figure 1 It is a structural schematic diagram of the present invention.

[0024] Figure 2 For the present invention Figure 1 A partial enlarged view of .

[0025] Figure 3 For the present invention Figure 2 A partial enlarged view of point A.

[0026] Figure 4 Schematic diagram of the structure of the electrospinning nozzle of the present invention.

[0027] Figure 5 This is an exploded view of the electrospinning nozzle of the present invention.

[0028] Figure 6 Schematic diagram of the preparation of electrospun nanofiber self-rotating yarns of the present invention.

[0029] In the picture:

[0030] 1. Electrospinning nozzle lifting mechanism; 2. Electrospinning nozzle traverse mechanism; 3. Electrospinning nozzle self-rotation mechanism; 4. Conductive slip ring; 5. Solution suction and push mechanism; 6. Solution injector; 7. Electrospinning nozzle; 8. Solution reservoir; 9. Frame; 10. Yarn receiving roller; 11. Transmission belt; 12. Active roller; 13. Active motor; 14. High-voltage DC positive power supply; 15. High-voltage DC negative power supply; 16. Connecting rod; 301. Rotating motor; 302. Rotating shaft; 303. Rotating motor fixing Seat; 304, end fixing seat; 501, suction and push screw; 502, suction and push motor; 503, screw nut; 504, suction and push motor fixing seat; 601, push seat; 602, syringe; 603, syringe fixing seat; 604, injection push rod; 605, push piece; 701, multi-channel distribution structure; 702, vertical holding structure; 703, peripheral drainage holding blade; 7011, straight tube body; 7012, inclined drainage channel; 7021, holding piece; 7031, drainage center seam. DETAILED DESCRIPTION

[0031] like Figures 1 to 6As shown, the present invention provides an electrospinning nanofiber self-rotating yarn preparation device, including an electrospinning nozzle 7, which is installed on the injection end of a solution syringe 6, and the propulsion end of the solution syringe 6 is connected to a solution suction and push mechanism 5, and the solution syringe 6 is driven by the solution suction and push mechanism 5 to achieve liquid suction and ejection; the solution suction and push mechanism 5 is installed on the electrospinning nozzle self-rotating mechanism 3, and the electrospinning nozzle self-rotating mechanism 3 drives the solution suction and push mechanism 5, the solution syringe 6 and the electrospinning nozzle 7 to rotate; the electrospinning nozzle self-rotating mechanism 3 is installed on the electrospinning nozzle lifting mechanism 1, and the electrospinning nozzle lifting mechanism 1 is installed on the electrospinning nozzle traverse mechanism 2; a yarn receiving roller 10 is provided below the electrospinning nozzle 7.

[0032] The output end of the electrospinning nozzle 7 has multiple tips, which can simultaneously and stably excite multiple jets and then stretch them to form multiple bundles of nanofibers.

[0033] A solution reservoir 8 is provided on one side of the electrospinning nozzle 7. When the solution injector 6 needs to absorb liquid, the electrospinning nozzle lifting mechanism 1 drives the electrospinning nozzle 7 to move up and down to immerse the electrospinning nozzle 7 in the solution reservoir 8.

[0034] Among them, the yarn receiving roller 10 serves as the receiving electrode of the electrospinning fiber, and the central axis of the yarn receiving roller 10 is parallel to the reciprocating motion direction of the electrospinning nozzle traverse mechanism 2; the yarn receiving roller 10 is driven by the active motor 13 to drive the active roller 12 through the transmission belt 11; the high-voltage DC positive power supply 14 is connected to the electrospinning nozzle 7, and the high-voltage DC negative power supply 15 is connected to the yarn receiving roller 10.

[0035] Among them, the electrostatic spinning nozzle self-rotating mechanism 3 includes a rotating shaft 302, one end of the rotating shaft 302 is driven to rotate by a rotating motor 301, and the other end is equipped with an end fixing seat 304, the rotating motor 301 is installed and fixed on the rotating motor fixing seat 303, and the electrostatic spinning nozzle self-rotating mechanism 3 is fixedly connected to the electrostatic spinning nozzle lifting mechanism 1 through the rotating motor fixing seat 303.

[0036] Among them, the solution suction and push mechanism 5 includes a suction and push screw 501, which is driven to rotate by a suction and push motor 502. A screw nut 503 is installed on the suction and push screw 501. The suction and push motor 502 is installed and fixed on the suction and push motor fixing seat 504. The suction and push motor fixing seat 504 is installed and fixed on the end fixing seat 304 of the electrostatic spinning nozzle self-rotation mechanism 3. The solution suction and push mechanism 5 is fixedly connected to the electrostatic spinning nozzle self-rotation mechanism 3 through the suction and push motor fixing seat 504.

[0037] Among them, the solution syringe 6 includes an injection cylinder 602 and an injection propulsion rod 604. The injection cylinder 602 is connected and fixed to the end fixing seat 304 of the electrospinning nozzle self-rotating mechanism 3 through the connecting rod 16. The propulsion piece 605 at the end of the injection propulsion rod 604 is inserted into the groove of the propulsion seat 601, so that the injection propulsion rod 604 is connected and fixed to the propulsion seat 601. The propulsion seat 601 is connected and fixed to the screw nut 503 of the solution suction and push mechanism 5. The injection propulsion rod 604 is driven to rise and fall by the screw nut 503 to realize the suction and injection of the solution by the solution syringe 6.

[0038] A syringe fixing seat 603 is provided between the syringe 602 and the connecting rod 16 , and the syringe 602 is embedded in the syringe fixing seat 603 and fixed; the bottom fixed end of the suction and push screw 501 is connected and fixed to the syringe fixing seat 603 .

[0039] A conductive slip ring 4 is installed on the rotating shaft 302, and the wires of the suction and push motor 502 of the solution suction and push mechanism 5 are led out through the conductive slip ring 4 to avoid entanglement of the wires.

[0040] Among them, the electrospinning nozzle lifting mechanism 1 and the electrospinning nozzle traversing mechanism 2 are realized by the cylinder pushing the slider on the guide rail or the motor driving the slider on the screw rod to achieve lifting and traversing. The electrospinning nozzle lifting mechanism 1 is fixedly connected to the electrospinning nozzle traversing mechanism 2, and the two cooperate to drive the electrospinning nozzle 7 to achieve reciprocating motion.

[0041] like Figure 4 and Figure 5 As shown, the electrospinning nozzle 7 includes a multi-channel distribution structure 701, a vertical holding structure 702 and a peripheral drainage holding blade 703. The vertical holding structure 702 and the peripheral drainage holding blade 703 are located on the output side of the multi-channel distribution structure 701, and four peripheral drainage holding blades 703 are arranged around the vertical holding structure 702.

[0042] The multi-channel distribution structure 701 includes a straight tube body 7011, and four inclined drainage channels 7012 are evenly arranged inside the straight tube body 7011; the vertical gripping structure 702 includes a gripping piece 7021, and there are four gripping pieces 7021, which are arranged corresponding to the inclined drainage channels 7012; a drainage center seam 7031 is arranged at the central axial position of the peripheral drainage gripping blade 703, and the peripheral drainage gripping blades 703 are evenly distributed in the middle position of the gap of the gripping piece 7021, and are arranged crosswise with the gripping piece 7021; the side of the peripheral drainage gripping blade 703 is an arc convex outward, and the bottom of the peripheral drainage gripping blade 703 is set with a pointed end.

[0043] Among them, the electrospinning nozzle traverse mechanism 2 is installed and fixed on the top of the frame 9, the yarn receiving roller 10 is installed and fixed on the bottom of the frame 9, the solution injector 6 and the electrospinning nozzle 7 extend into the frame 9 through the electrospinning nozzle self-rotation mechanism 3, the solution storage tank 8 is installed and fixed on the partition inside the frame 9, and the high-voltage DC positive power supply 14 and the high-voltage DC negative power supply 15 are installed and fixed in the box inside the frame 9.

[0044] The present invention also provides a method for preparing electrospun nanofiber self-rotating yarn, comprising the following steps:

[0045] S1. Pour the electrospinning solution into the solution reservoir 8. The electrospinning nozzle lifting mechanism 1 drives the electrospinning nozzle 7 to rise. The electrospinning nozzle traverse mechanism 2 drives the electrospinning nozzle 7 to traverse to above the solution reservoir 8. The electrospinning nozzle lifting mechanism 1 drives the electrospinning nozzle 7 to descend and immerse the electrospinning nozzle 7 to the bottom of the solution reservoir 8.

[0046] S2. The solution suction and push mechanism 5 drives the screw nut 503 to rise, so that the solution syringe 6 is filled with solution. The electrospinning nozzle lifting mechanism 1 drives the electrospinning nozzle 7 to rise, and the electrospinning nozzle traverse mechanism 2 drives the electrospinning nozzle 7 to traverse to above one end of the yarn receiving roller 10.

[0047] S3, the active roller 12 drives the yarn receiving roller 10 to start rotating, the high-voltage DC positive power supply 14 and the high-voltage DC negative power supply 15 are energized, the solution suction and push mechanism 5 pushes the solution syringe 6 to start supplying liquid to the electrospinning nozzle 7, and the electrospinning jet begins to form and stretch into nanofibers. At the same time, the electrospinning nozzle self-rotating mechanism 3 starts working, driving the electrospinning nozzle 7 to start rotating, realizing automatic twisting of the nanofibers. During rotation, the electrospinning nozzle traverse mechanism 2 also starts reciprocating motion, winding the formed yarn onto the yarn receiving roller 10, completing the yarn collection.

[0048] When the electrospinning nozzle 7 is ejecting fluid, the straight tube body 7011 can solve the problem of easy clogging in the prior art, and is suitable for electrospinning of high-concentration spinning solution systems; the inclined drainage channel 7012 allows the spinning solution to be evenly diverted through the channel, while preventing the spinning solution from flowing too fast and affecting the final spinning effect; the peripheral drainage holding blades 703 and the holding piece 7021 are cross-arranged to increase the holding ability of the spinning solution surface, and the drainage center seam 7031 not only drains the spinning solution to the bottom tip position, but also plays a role in increasing the holding liquid level, and the tip at the bottom of the peripheral drainage holding blade 703 can play a role in gathering charges, and can stably excite multiple spinning jets.

[0049] The embodiments of the present invention are described in detail above, but the contents are only preferred embodiments of the present invention and should not be considered to limit the scope of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the present invention.

Claims

1. An electrospinning nanofiber self-rotating yarn preparation device, characterized by: The electrospinning nozzle is mounted on the injection end of the solution syringe, and the propulsion end of the solution syringe is connected to the solution suction and propulsion mechanism. The solution syringe is driven by the solution suction and propulsion mechanism to achieve liquid suction and ejection. The solution suction and push mechanism is installed on the electrospinning nozzle self-rotating mechanism, and the electrospinning nozzle self-rotating mechanism drives the solution suction and push mechanism, the solution injector and the electrospinning nozzle to rotate; the electrospinning nozzle self-rotating mechanism is installed on the electrospinning nozzle lifting mechanism, and the electrospinning nozzle lifting mechanism is installed on the electrospinning nozzle traverse mechanism; a yarn receiving roller is provided under the electrospinning nozzle; the electrospinning nozzle includes a multi-channel distribution structure, a vertical holding structure and a peripheral drainage holding blade, and the vertical holding structure and the peripheral drainage holding blade are located in the multi-channel On the output side of the distribution structure, the peripheral drainage holding blades are arranged around the vertical holding structure; the multi-channel distribution structure includes a straight tube body, and the interior of the straight tube body is evenly provided with inclined drainage channels; the vertical holding structure includes a holding piece, and the holding piece is arranged corresponding to the inclined drainage channel; the peripheral drainage holding blade is provided with a drainage center seam at the central axial position, and the peripheral drainage holding blades are evenly distributed in the middle position of the gap of the holding piece and are cross-arranged with the holding piece; the side surface of the peripheral drainage holding blade is an outwardly convex arc, and the bottom of the peripheral drainage holding blade is provided with a pointed end.

2. The electrospinning nanofiber self-rotating yarn preparation device according to claim 1, characterized in that: A solution storage tank is provided on one side of the electrospinning nozzle.

3. The electrospinning nanofiber self-rotating yarn preparation device according to claim 2, characterized in that: The central axis of the yarn receiving roller is parallel to the reciprocating motion direction of the electrostatic spinning nozzle traverse mechanism; a high-voltage DC positive power supply is connected to the electrostatic spinning nozzle, and a high-voltage DC negative power supply is connected to the yarn receiving roller.

4. The electrospinning nanofiber self-rotating yarn preparation device according to claim 3, characterized in that: The electrostatic spinning nozzle self-rotating mechanism includes a rotating shaft, one end of which is driven to rotate by a rotating motor, and the other end is equipped with an end fixing seat, the rotating motor is installed and fixed on the rotating motor fixing seat, and the electrostatic spinning nozzle self-rotating mechanism is fixedly connected to the electrostatic spinning nozzle lifting mechanism through the rotating motor fixing seat.

5. The electrospinning nanofiber self-rotating yarn preparation device according to claim 4, characterized in that: The solution suction and push mechanism includes a suction and push screw, which is driven to rotate by a suction and push motor. A screw nut is installed on the suction and push screw. The suction and push motor is installed and fixed on a suction and push motor fixing seat. The suction and push motor fixing seat is installed and fixed on the end fixing seat of the electrostatic spinning nozzle self-rotating mechanism. The solution suction and push mechanism is fixedly connected to the electrostatic spinning nozzle self-rotating mechanism through the suction and push motor fixing seat.

6. The electrospinning nanofiber self-rotating yarn preparation device according to claim 5, characterized in that: The solution syringe includes an injection cylinder and an injection propulsion rod. The injection cylinder is connected and fixed to the end fixing seat of the electrospinning nozzle self-rotating mechanism through a connecting rod. The propulsion piece at the end of the injection propulsion rod is inserted into the groove of the propulsion seat, so that the injection propulsion rod is connected and fixed to the propulsion seat. The propulsion seat is connected and fixed to the screw nut of the solution suction and push mechanism. The injection propulsion rod is driven to rise and fall by the screw nut to realize the suction and injection of the solution by the solution syringe.

7. The electrospinning nanofiber self-rotating yarn preparation device according to claim 6, characterized in that: A conductive slip ring is installed on the rotating shaft, and the wires of the suction and push motor pass through the conductive slip ring and are led out.

8. A method for preparing electrospun nanofiber self-rotating yarn, which is implemented based on the electrospun nanofiber self-rotating yarn preparation device according to claim 7, characterized in that: The following steps are involved: S1. Pour the electrospinning solution into the solution reservoir, the electrospinning nozzle lifting mechanism drives the electrospinning nozzle to rise, the electrospinning nozzle traverse mechanism drives the electrospinning nozzle to traverse to above the solution reservoir, and the electrospinning nozzle lifting mechanism drives the electrospinning nozzle to descend, immersing the electrospinning nozzle to the bottom of the solution reservoir; S2, the solution suction and push mechanism drives the injection push rod to rise, so that the solution syringe is filled with solution, the electrospinning nozzle lifting mechanism drives the electrospinning nozzle to rise, and the electrospinning nozzle traverse mechanism drives the electrospinning nozzle to traverse to above one end of the yarn receiving roller; S3. The yarn receiving roller starts to rotate, the high-voltage DC positive power supply and the high-voltage DC negative power supply are energized, the solution suction and push mechanism pushes the solution syringe to start supplying liquid to the electrospinning nozzle, and the electrospinning jet begins to form and stretch into nanofibers. At the same time, the electrospinning nozzle self-rotating mechanism starts to work, driving the electrospinning nozzle to rotate, realizing automatic twisting of the nanofibers. During rotation, the electrospinning nozzle transverse movement mechanism also starts to reciprocate, winding the formed yarn onto the yarn receiving roller, completing the yarn collection.

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