Rotary spinning device for electrostatic spinning
Through the rotating and moving component design of the rotary spinning device for electrospinning, the problem of nanofiber brittleness is solved, the strength and uniformity of the fibers are improved, the needs of large-scale production are met, and the quality of finished products is optimized.
Patent Information
- Application Number
- CN202422054698.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-23
- Publication Date
- 2025-08-29
- Estimated Expiration
- 2034-08-23
AI Technical Summary
The nanofibers prepared by existing electrospinning technology are highly brittle, which limits their application performance and scope.
A rotary spinning device for electrospinning is adopted, which includes adjusting the assembly to drive the injection assembly to rotate, bearing kit and gear cooperate to make the needle rotate, and moving the assembly drives the collection plate to move, achieving uniform flow of polymer solution and uniform collection of fibers, and arranging the needles in an off-location improves production efficiency.
It improves the strength and toughness of the fiber, reduces fiber diameter variation and deposition, enhances the diameter consistency and structural uniformity of the fiber, meets the needs of large-scale production, reduces fiber defects and material losses, and optimizes the uniformity and orientation arrangement of the finished product.
Smart Images
Figure CN223280983U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a spinning device, in particular to a rotary spinning device for electrostatic spinning, belonging to the technical field of electrostatic spinning. Background Art
[0002] Electrospinning has become a major method for producing nanofiber materials due to its simple manufacturing equipment, low spinning costs, wide range of spinnable materials, and controllable process. Electrospinning technology enables the direct and continuous production of polymer nanofibers, offering advantages such as low equipment and experimental costs, ease of use, simplicity, and flexibility, and high fiber yields. Fiber membranes produced using electrospinning possess a network structure with high porosity and a large specific surface area.
[0003] The potential application value of nanofibers provides new development space for the development of their preparation technology, but also puts forward new requirements. However, the brittleness of nanofibers prepared by electrospinning technology limits their application performance and scope. To this end, we have introduced a rotary spinneret for electrospinning. Utility Model Content
[0004] The utility model provides a rotary spinning device for electrostatic spinning, which solves the problem that nanofibers prepared in the prior art are relatively brittle, which limits their application performance.
[0005] The utility model is realized by the following technical solutions: a rotary spinneret for electrostatic spinning, comprising a workbench and a support rod fixed to the surface of the workbench, a placement plate fixed to the upper end of the support rod, an adjustment component provided on the surface of the placement plate, an injection component provided on the surface of the adjustment component, a collection plate and a moving component further provided on the surface of the workbench, the collection plate being movable on the surface of the workbench via the moving component;
[0006] The adjustment assembly includes a first motor and a placement rack, an electric push rod and an adjustment plate arranged below the first motor, and a telescopic rod and a fixed plate are further arranged on the side of the adjustment plate;
[0007] The injection assembly includes a syringe and a bearing kit and a needle installed on the lower surface of the syringe. The syringe is overlapped on the surface of the placement rack. A gear is also fixed on the surface of the needle. The needle is inserted into the surface of the adjustment plate.
[0008] Furthermore, the first motor is fixed on the surface of the placement plate, and the output shaft of the first motor passes through the placement plate through a bearing, the placement frame is fixed on the output shaft of the first motor, the upper end of the electric push rod is fixed on the lower surface of the placement plate, and the adjustment plate is fixed on the lower end of the electric push rod. There are multiple electric push rods, and they are evenly arranged on the lower surface of the placement plate.
[0009] Furthermore, one end of the telescopic rod is fixed to the side of the placement rack, and the fixed plate is fixed to the other end of the telescopic rod. A spring is sleeved on the surface of the telescopic rod. The fixed plate is tightly fitted to the side of the injection barrel through the telescopic rod and the spring. A through hole is opened on the surface of the adjustment plate, and a gear ring is embedded in the inner wall of the through hole, and the gear is engaged with the gear ring.
[0010] Furthermore, a first slider is fixed on the upper surface of the placement rack, and a first slide groove is opened on the lower surface of the placement plate. The first slider is slidably connected in the first slide groove. The placement rack is movably connected to the lower surface of the placement plate through the first slider and the first slide groove, and the first slide groove is annular. There are two first sliders, and they are symmetrically arranged on the surface of the placement rack.
[0011] Furthermore, the moving assembly includes a second motor and a threaded rod and a threaded cap arranged on the side of the second motor, a connecting rod is fixed to the surface of the threaded cap, the upper end of the connecting rod is clamped on the lower surface of the collection plate, a transmission compartment is opened inside the workbench, a bracket is fixed on the inner wall of the transmission compartment, the second motor is installed inside the bracket, one end of the threaded rod is fixed to the output shaft of the second motor, and the other end of the threaded rod is rotatably connected to the inner wall of the transmission compartment through a bearing.
[0012] Furthermore, the threaded cap is threadedly connected to the surface of the threaded rod, a slot is provided on the lower surface of the collecting plate, the upper end of the connecting rod is clamped in the slot, the slot is provided at the center of the collecting plate, a movable slot is provided on the surface of the transmission bin, the connecting rod is passed through the movable slot, and the collecting plate corresponds to the injection assembly.
[0013] Furthermore, a second slider is fixed to the lower surface of the collection plate, and a second slide groove is opened on the surface of the workbench. The second slider is slidably connected in the second slide groove. The collection plate can move on the surface of the workbench through the second slider and the second slide groove. There are two second sliders and two second slide grooves, and they are symmetrically arranged on the lower surface of the collection plate.
[0014] Furthermore, the bearing kit includes a bearing sleeve and a bearing.
[0015] The utility model provides a rotary spinneret for electrostatic spinning, which has the following beneficial effects:
[0016] 1. The electrospinning rotary spinneret can drive the injection assembly to rotate during the spinning process by adjusting the assembly, ensuring that the polymer solution flows evenly in the injection barrel, helping to reduce bubbles and precipitation, and ensuring the consistency of raw materials during the spinning process. The rotating motion can increase the degree of stretching while ejecting the fiber, helping to refine the fiber and improve its strength and toughness. At the same time, the rotation of the injection barrel will improve the stability of the ejected liquid flow, thereby improving the diameter uniformity and structural consistency of the fiber and reducing the variation in fiber diameter.
[0017] 2. The electrospinning rotary spinneret uses a bearing kit, a gear ring and a gear, so that the needle can rotate on its own while following the rotation of the syringe barrel. This not only makes the fibers more uniform when ejected, reduces local concentration differences caused by electrostatic effects, thereby improving the consistency of fiber diameter, but also allows the polymer solution to form a rotational motion when ejected, thereby enhancing the stretching effect of the polymer chain. At the same time, the rotation can reduce the residence time of the polymer in the spinneret, thereby reducing the risk of blockage and maintaining production continuity.
[0018] 3. The electrospinning rotary spinneret device uses multiple needles arranged in an eccentric manner, which can not only significantly improve the spinning production efficiency and increase the amount of fiber produced per unit time to meet the needs of large-scale production, but also the eccentric arrangement can enhance the stability of the ejected liquid flow, improve the diameter uniformity and overall structure of the fiber, and reduce the fiber defects. At the same time, the arrangement of the eccentric spinnerets can produce stretching in different directions during the fiber formation process, promote the directional arrangement of the fiber, and thus enhance its mechanical properties.
[0019] 4. The electrospinning rotary spinneret drives the collecting plate to move and collect through the mobile device, which not only ensures the uniform distribution of fibers in the entire collecting area, thereby avoiding excessive accumulation of fibers in a certain position, improving the quality and consistency of fibers, and reducing the risk of fiber accumulation and deformation, thereby reducing material loss in the collection process, but also can affect the deposition distribution of fibers on the collecting plate by adjusting the moving speed and distance of the collecting plate, thereby optimizing the arrangement order and layered stacking effect of the fibers, improving the uniformity of the finished product, and reducing static electricity accumulation to ensure that the fibers can be collected freely. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;
[0021] Figure 2 This is a front cross-sectional structural diagram of the present invention;
[0022] Figure 3 This is a side structural diagram of the present utility model;
[0023] Figure 4 This is a schematic diagram of the structure of the mobile component in the present utility model;
[0024] Figure 5 It is a partial structural diagram of the injection assembly in the utility model.
[0025] Description of Reference Numerals
[0026] 1. Workbench; 101. Transmission compartment; 102. Movable slot;
[0027] 2. Support rod; 3. Placement board;
[0028] 4. Adjustment assembly; 401. First motor; 402. Placement rack; 403. First slider; 404. Electric push rod; 405. Adjustment plate; 406. Telescopic rod; 407. Fixed plate;
[0029] 5. Injection assembly; 501. Syringe; 502. Bearing kit; 503. Needle; 504. Gear;
[0030] 6. Collection plate; 601. Second slider; 602. Card slot;
[0031] 7. Moving assembly; 701. Bracket; 702. Second motor; 703. Threaded rod; 704. Threaded cap; 705. Connecting rod. DETAILED DESCRIPTION
[0032] See also Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 and Figure 5 The embodiment of the utility model provides a rotary spinneret for electrospinning, comprising a workbench 1 and a support rod 2 fixed to the surface of the workbench 1, a placement plate 3 fixed to the upper end of the support rod 2, an adjustment component 4 provided on the surface of the placement plate 3, an injection component 5 provided on the surface of the adjustment component 4, a collecting plate 6 and a moving component 7 further provided on the surface of the workbench 1, and the collecting plate 6 is movable on the surface of the workbench 1 through the moving component 7;
[0033] Please refer to Figure 2 、 Figure 3 and Figure 5The adjustment component 4 includes a first motor 401 and a placement frame 402, an electric push rod 404 and an adjustment plate 405 arranged below the first motor 401. A telescopic rod 406 and a fixed plate 407 are also provided on the side of the adjustment plate 405; the first motor 401 is fixed to the surface of the placement plate 3, and the output shaft of the first motor 401 passes through the placement plate 3 through a bearing, the placement frame 402 is fixed to the output shaft of the first motor 401, the upper end of the electric push rod 404 is fixed to the lower surface of the placement plate 3, the adjustment plate 405 is fixed to the lower end of the electric push rod 404, there are multiple electric push rods 404, and they are evenly arranged on the lower surface of the placement plate 3; one end of the telescopic rod 406 is fixed to the side of the placement frame 402, and the fixed plate 407 is fixed to the other end of the telescopic rod 406. A spring is sleeved on the surface of the telescopic rod 406 The fixed plate 407 is tightly fitted to the side of the injection barrel 501 through the telescopic rod 406 and the spring. A through hole is opened on the surface of the adjustment plate 405, and a gear ring is embedded in the inner wall of the through hole, and the gear 504 is engaged with the gear ring; the electrospinning rotary spinneret device can drive the injection assembly 5 to rotate during the spinning process through the adjustment assembly 4, which can ensure that the polymer solution flows evenly in the injection barrel 501, helps to reduce bubbles and precipitation, and ensure the consistency of raw materials during the spinning process, and the rotational motion can increase the degree of stretching of the fiber while spraying it, which helps to refine the fiber and improve its strength and toughness. At the same time, the rotation of the injection barrel 501 will improve the stability of the ejected liquid flow, thereby improving the diameter uniformity and structural consistency of the fiber and reducing the variation in the diameter of the fiber.
[0034] Please refer to Figure 2 、 Figure 3 and Figure 5 The injection assembly 5 includes a syringe 501 and a bearing kit 502 and a needle 503 installed on the lower surface of the syringe 501. The syringe 501 is overlapped on the surface of the placement rack 402. A gear 504 is also fixed on the surface of the needle 503, and the needle 503 is inserted into the surface of the adjustment plate 405. The electrospinning rotary spinneret uses the bearing kit 502, the gear ring and the gear 504 to enable the needle 503 to rotate while following the rotation of the syringe 501. This not only makes the fiber more uniform when it is ejected, reduces the local concentration difference caused by electrostatic action, thereby improving the consistency of the fiber diameter, but also makes the polymer solution form a rotational motion when it is ejected, thereby enhancing the stretching effect of the polymer chain. At the same time, the rotation can reduce the residence time of the polymer in the spinneret hole, thereby reducing the risk of blockage and maintaining the continuity of production.
[0035] Please refer to Figure 2 and Figure 3A first slider 403 is fixed on the upper surface of the placement rack 402, and a first slide groove is opened on the lower surface of the placement plate 3. The first slider 403 is slidably connected in the first slide groove. The placement rack 402 is movably connected to the lower surface of the placement plate 3 through the first slider 403 and the first slide groove, and the first slide groove is annular. There are two first sliders 403, and they are symmetrically arranged on the surface of the placement rack 402.
[0036] Please refer to Figure 2 and Figure 4 , the moving component 7 includes a second motor 702 and a threaded rod 703 and a threaded cap 704 arranged on the side of the second motor 702, a connecting rod 705 is fixed on the surface of the threaded cap 704, and the upper end of the connecting rod 705 is clamped on the lower surface of the collecting plate 6, a transmission warehouse 101 is opened inside the workbench 1, and a bracket 701 is fixed on the inner wall of the transmission warehouse 101, the second motor 702 is installed inside the bracket 701, one end of the threaded rod 703 is fixed to the output shaft of the second motor 702, and the other end of the threaded rod 703 is rotatably connected to the inner wall of the transmission warehouse 101 through a bearing; the threaded cap 704 is threadedly connected to the surface of the threaded rod 703, a card slot 602 is opened on the lower surface of the collecting plate 6, and the upper end of the connecting rod 705 is clamped in the card slot 602. The card slot 602 is opened on the collecting plate 6 At the center, a movable groove 102 is provided on the surface of the transmission bin 101, and the connecting rod 705 is passed through the movable groove 102, and the collecting plate 6 corresponds to the injection assembly 5; the electrospinning rotary spinneret device drives the collecting plate 6 to move and collect through the mobile device, which can not only ensure the uniform distribution of fibers in the entire collecting area, thereby avoiding excessive accumulation of fibers at a certain position, improving the quality and consistency of fibers, reducing the risk of fiber accumulation and deformation, and thus reducing material loss during the collection process, but also can adjust the moving speed and distance of the collecting plate 6 to affect the deposition distribution of fibers on the collecting plate, thereby optimizing the orderliness of the fiber arrangement and the layered stacking effect, improving the uniformity of the finished product, and at the same time reducing static electricity accumulation to ensure that the fibers can be collected freely.
[0037] Please refer to Figure 1 and Figure 3 A second slider 601 is fixed to the lower surface of the collection plate 6, and a second slide groove is opened on the surface of the workbench 1. The second slider 601 is slidably connected in the second slide groove. The collection plate 6 can move on the surface of the workbench 1 through the second slider 601 and the second slide groove. There are two second sliders 601 and two second slide grooves, and they are symmetrically arranged on the lower surface of the collection plate 6.
[0038] Please refer to Figure 2 、 Figure 3 and Figure 5The bearing kit 502 includes a bearing sleeve and a bearing; there are multiple bearing kits 502, needles 503 and gears 504, which are evenly installed in a ring shape on the lower surface of the injection barrel 501; the electrospinning rotary spinneret device uses multiple needles 503 arranged in an eccentric manner, which can not only significantly improve the spinning production efficiency and increase the amount of fiber produced per unit time to meet the needs of large-scale production, but also the eccentric arrangement can enhance the stability of the ejected liquid flow, improve the diameter uniformity and overall structure of the fiber, and reduce the defect phenomenon of the fiber. At the same time, the arrangement of the eccentric spinnerets can produce stretching in different directions during the fiber formation process, promote the directional arrangement of the fiber, and thus enhance its mechanical properties.
[0039] Working principle: First, place the device in a suitable position, then connect the device to an external power supply, then the staff controls the electric push rod 404 through an external control device to drive the adjustment plate 405 to move downward, and places the syringe 501 equipped with a bearing kit 502 and a needle 503 on the placement rack 402. Under the action of the telescopic rod 406 and the spring, the fixed plate 407 can fit tightly against the side of the syringe 501 and clamp the syringe 501. Then the staff controls the electric push rod 404 to operate in the opposite direction through the control device, driving the adjustment plate 405 to move upward, so that the tooth ring embedded on the surface of the adjustment plate 405 can engage with the gear 504 fixed on the surface of the needle 503; finally, the staff places the collecting plate 6 on the surface of the workbench 1, and enables the connecting rod 705 to be engaged in the card slot 602.
[0040] When spinning is required, the staff only needs to control the operation of the injection assembly 5 through the control device, and spin the polymer solution in the syringe 501 through the needle 503. At the same time, the staff controls the operation of the first motor 401 through the control device, and the first motor 401 drives the placement rack 402 to rotate, and the placement rack 402 drives the injection assembly 5 fixed on its surface to rotate, wherein the needle 503 rotates synchronously with the syringe 501. Since the gear 504 fixed on its surface is engaged with the gear ring, and cooperates with the bearing kit 502, the needle 503 can rotate on its own, and finally the formed fiber falls on the collection plate 6. Then the staff controls the operation of the second motor 702 through the control device, driving the threaded rod 703 to rotate, and the threaded rod 703 drives the threaded cap 704 to move, thereby driving the moving rod fixed on the surface of the threaded cap 704 to move synchronously, and then drives the collection plate 6 to move left and right, completing the collection of the fibers.
[0041] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.
Claims
1. A rotary spinneret for electrospinning, comprising a workbench (1) and a support rod (2) fixed to the surface of the workbench (1), wherein a placement plate (3) is fixed to the upper end of the support rod (2), characterized in that: An adjustment component (4) is provided on the surface of the placement plate (3), an injection component (5) is provided on the surface of the adjustment component (4), and a collection plate (6) and a moving component (7) are also provided on the surface of the workbench (1), and the collection plate (6) is movable on the surface of the workbench (1) via the moving component (7); The adjustment assembly (4) comprises a first motor (401), a placement rack (402), an electric push rod (404) and an adjustment plate (405) arranged below the first motor (401), and a telescopic rod (406) and a fixed plate (407) are further arranged on the side of the adjustment plate (405); The injection assembly (5) comprises a syringe (501) and a bearing assembly (502) and a needle (503) mounted on the lower surface of the syringe (501); the syringe (501) is overlapped on the surface of the placement frame (402); a gear (504) is fixed on the surface of the needle (503); and the needle (503) is inserted into the surface of the adjustment plate (405).
2. The electrospinning rotary spinneret according to claim 1, wherein: The first motor (401) is fixed on the surface of the placement plate (3), and the output shaft of the first motor (401) passes through the placement plate (3) through a bearing. The placement frame (402) is fixed to the output shaft of the first motor (401). The upper end of the electric push rod (404) is fixed on the lower surface of the placement plate (3). The adjustment plate (405) is fixed on the lower end of the electric push rod (404). There are multiple electric push rods (404), which are evenly arranged on the lower surface of the placement plate (3).
3. The electrospinning rotary spinneret according to claim 1, wherein: One end of the telescopic rod (406) is fixed to the side of the placement frame (402), and the fixed plate (407) is fixed to the other end of the telescopic rod (406). A spring is sleeved on the surface of the telescopic rod (406). The fixed plate (407) is tightly fitted on the side of the injection cylinder (501) through the telescopic rod (406) and the spring. A through hole is opened on the surface of the adjustment plate (405), and a gear ring is embedded in the inner wall of the through hole. The gear (504) is engaged with the gear ring.
4. The electrospinning rotary spinneret according to claim 1, wherein: A first slider (403) is fixed on the upper surface of the placement rack (402), and a first slide groove is provided on the lower surface of the placement plate (3). The first slider (403) is slidably connected in the first slide groove. The placement rack (402) is movably connected to the lower surface of the placement plate (3) through the first slider (403) and the first slide groove, and the first slide groove is annular. There are two first sliders (403) and they are symmetrically arranged on the surface of the placement rack (402).
5. The electrospinning rotary spinneret according to claim 1, wherein: The moving assembly (7) comprises a second motor (702) and a threaded rod (703) and a threaded cap (704) arranged on the side of the second motor (702); a connecting rod (705) is fixed on the surface of the threaded cap (704); the upper end of the connecting rod (705) is clamped on the lower surface of the collecting plate (6); a transmission chamber (101) is provided inside the workbench (1); a bracket (701) is fixed on the inner wall of the transmission chamber (101); the second motor (702) is installed inside the bracket (701); one end of the threaded rod (703) is fixed to the output shaft of the second motor (702); and the other end of the threaded rod (703) is rotatably connected to the inner wall of the transmission chamber (101) through a bearing.
6. The electrospinning rotary spinneret according to claim 5, characterized in that: The threaded cap (704) is threadedly connected to the surface of the threaded rod (703); a slot (602) is provided on the lower surface of the collecting plate (6); the upper end of the connecting rod (705) is engaged in the slot (602); the slot (602) is provided at the center of the collecting plate (6); a movable slot (102) is provided on the surface of the transmission chamber (101); the connecting rod (705) is passed through the movable slot (102); and the collecting plate (6) corresponds to the injection assembly (5).
7. The electrospinning rotary spinneret according to claim 5, characterized in that: A second slider (601) is fixed to the lower surface of the collecting plate (6), and a second slide groove is provided on the surface of the workbench (1). The second slider (601) is slidably connected in the second slide groove. The collecting plate (6) can move on the surface of the workbench (1) through the second slider (601) and the second slide groove. There are two second sliders (601) and two second slide grooves, and they are symmetrically arranged on the lower surface of the collecting plate (6).