CENTRIFUGAL ELECTROSTATIC SPINNING DEVICE AND CONTROLLABLE COLLECTING APPARATUS FOR SPINNING TRACK THEREOF
A controllable collecting apparatus for a spinning track of a centrifugal electrostatic spinning device. The spinning track controllable collecting apparatus includes a base part and a controller, where a collecting side of the base part is provided with a plurality of electrodes distributed in an array mode, a plurality of control interfaces of the controller are respectively used for controlling the corresponding electrodes to be electrified when started, and the controller can control each control interface to be started according to a predetermined sequence. The arrayed electrodes are arranged on the collecting side and are controlled to be switched on or off by the controller according to the predetermined sequence so that spun filaments are attached to the spinning track controllable collecting apparatus according to a predetermined track to effectively locate a spinning attachment track. That is, better filaments can be spun to achieve a better spinning effect.
The present invention relates to the technical field of spinning devices, in particular to a controllable collecting apparatus for a spinning track of a centrifugal electrostatic spinning device, and also relates to the centrifugal electrostatic spinning device including the spinning track controllable collecting apparatus.
BACKGROUNDElectrospinning is a fiber production method which uses electric force to draw charged threads of polymer solutions or polymer melts up to fiber diameters in the order of some hundred nanometers. Under the action of the electric field, a droplet at a needle changes from a spherical shape to a conical shape (i.e., “Taylor cone”), and a fiber filament extends from a conical tip. In this way, polymer filaments of nanoscale diameter can be produced.
The Chinese patent CN104328514A discloses a centrifugal electrostatic spinning apparatus having a high-voltage power supply and a centrifugal device. Specifically, the apparatus mainly includes a transmission apparatus, a feeding apparatus, a heating apparatus, a sealing apparatus, a spinning apparatus, a collecting apparatus, a temperature control apparatus and a box body.
The current electrostatic spinning process is mainly near-field direct-writing electrostatic spinning, the efficiency of the process is low, the needle is prone to blockage, and the process is not suitable for large-scale production. The centrifugal electrostatic spinning is also studied in the prior art, but a filament-forming direction cannot be well controlled during the centrifugal electrostatic spinning because a centrifugal force is added so that finished fiber filaments are irregularly arranged and are generally randomly stacked together, and the application of the centrifugal electrostatic spinning technology is limited.
In summary, how to effectively solve the problem of poor spinning effect is an urgent problem to be solved by a person skilled in the art at present.
SUMMARYIn view of this, the first objective of the present invention is to provide a controllable collecting apparatus for a spinning track of a centrifugal electrostatic spinning device, and the spinning track controllable collecting apparatus can effectively solve the problem of poor spinning effect. A second objective of the present invention is to provide a centrifugal electrostatic spinning device including the spinning track controllable collecting apparatus.
In order to achieve the first objective, the present invention provides the following technical solution:
A controllable collecting apparatus for a spinning track of a centrifugal electrostatic spinning device, including a base part and a controller, where a collecting side of the base part is provided with a plurality of arrayed electrodes, a plurality of control interfaces of the controller are respectively used for controlling the corresponding electrodes to be electrified when started, and the controller can control each control interface to be started according to a predetermined sequence.
According to the technical solution, when the spinning track controllable collecting apparatus is applied, according to a required routing track, each control interface is controlled by the controller to be electrified according to the predetermined sequence so that the electrodes connected with the control interfaces are sequentially switched on or off to form a predetermined linear electric field trend, and spun filaments are sequentially attached to the predetermined electrode to form spinning routing with a predetermined path. A plurality of arrayed electrodes are arranged on the collecting side and are switched on or off by a controller according to the predetermined sequence, so that the spun filaments are attached to the spinning track controllable collecting apparatus according to a predetermined track to effectively locate a spinning attachment track. That is, better spun filaments can be spun to achieve a better spinning effect. Therefore, the controllable collecting apparatus for a spinning track of a centrifugal electrostatic spinning device can effectively solve the problem of poor spinning effect.
Preferably, the spinning track controllable collecting apparatus further includes a heating plate for heating the collecting side of the base part.
Preferably, the base part is a substrate, the electrodes are inlaid on the collecting side of the substrate, and the heating plate is attached to a side, away from the electrodes, of the substrate.
Preferably, the electrodes are matrix-arrayed, a spacing between the adjacent electrodes in an array direction ranges from 1 mm to 3 mm, and a collecting end of the electrode is circular having a diameter of no more than 1 mm or a square shape having a side length of no more than 1 mm.
Preferably, a heating temperature of the heating plate ranges from 25° C. to 100° C.
In order to achieve the second objective, the present invention also provides a centrifugal electrostatic spinning device which includes anyone spinning track controllable collecting apparatus, where the centrifugal electrostatic spinning device includes a centrifugal rotary generator, a spinning outlet is formed on a side edge of the centrifugal rotary generator, the centrifugal rotary generator can throw a fluid-like material in an inner cavity out of the spinning outlet when rotating, and the base part of the spinning track controllable collecting apparatus is arranged around the centrifugal rotary generator to collect a filamentary substance thrown out of the spinning outlet. Because the spinning track controllable collecting apparatus has the above technical effect, the centrifugal electrostatic spinning device with the spinning track controllable collecting apparatus also has the corresponding technical effect.
Preferably, the centrifugal electrostatic spinning device further includes an axial driving apparatus for driving the spinning track controllable collecting apparatus and the centrifugal rotary generator to perform opposite motions in an extending direction of a rotation axis of the centrifugal rotary generator.
Preferably, the centrifugal electrostatic spinning device includes a rack, where the spinning track controllable collecting apparatus is fixed to the rack, and the axial driving apparatus includes a stepping motor installed on the rack and a lead screw nut transmission mechanism connected between the stepping motor and the centrifugal rotary generator; and a speed regulating motor used for driving the centrifugal rotary generator to rotate is arranged between the centrifugal rotary generator and the lead screw nut transmission mechanism.
Preferably, the rotation axis of the centrifugal rotary generator extends upward and downward, the centrifugal rotary generator includes a liquid storage tank, a lower end of an inner wall of the liquid storage tank inclines outward 3° to 7° compared with an upper end, and the speed regulating motor is connected with the centrifugal rotary generator through a flexible coupler.
Preferably, the centrifugal electrostatic spinning device further includes a sealing cover, where the spinning path controllable collecting apparatus and the centrifugal rotary generator are both located inside the sealing cover.
To describe the technical solutions in the embodiments of the present invention or the prior art more clearly, the following briefly describes the accompanying drawings required for describing the embodiments of the prior art. Apparently, the accompanying drawings in the following description show some embodiments of the present invention, and a person of ordinary skill in the art can still derive other drawings from these accompanying drawings without creative efforts.
Reference numerals in the drawings are as follows:
Sealing cover 1, spinning track controllable collecting apparatus 2, centrifugal rotary generator 3, spinning outlet 4, bearing 5, spindle 6, coupler 7, sliding block 8, motor base 9, speed regulating motor 10, sliding rail 11, lead screw 12, stepping motor 13, rack 14, high-voltage power supply 15, controller 16, base part 17, electrode 18, heating plate 19 and wire 20.
DETAILED DESCRIPTIONAn embodiment of the present invention discloses a spinning path controllable collecting apparatus of a centrifugal rotary generator to effectively solve the problem of poor spinning effect.
The following clearly and completely describes the technical solutions in the embodiments of the present invention with reference to accompanying drawings in the embodiments of the present invention. Apparently, the described embodiments are merely a part rather than all of the embodiments of the present invention. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.
Referring to
In a specific embodiment, provided is a spinning track controllable collecting apparatus 2 of a centrifugal electrostatic spinning device, the spinning track controllable collecting apparatus 2 is mainly installed outside a needle-shaped filament outlet head of the centrifugal electrostatic spinning device to receive a filamentary substance thrown out of a spinning outlet of the needle-shaped filament outlet head. Specifically, the spinning track controllable collecting apparatus includes a base part 17, electrodes 18, and a controller 16.
The base part 17 serves as a base portion to mainly fix each electrode 18, the base part 17 is arranged around a rotation axis of the needle-shaped filament outlet head, and the side close to the needle-shaped filament outlet head is a collecting side. The particular base part 17 may be a substrate and in particular, may be tubular, i.e. a tubular wall member is the base part 17 and is a sleeve.
A collecting side of the base part 17 is provided with a plurality of arrayed electrodes 18, each electrode 18 forms an electric field when the high-voltage power supply 15 is switched on. The electric field should be capable of having a guiding effect on spun filaments located in the electric field, mainly by electrostatic guiding, so that the suspended filament moves rapidly towards the energized electrode 18. The electrodes 18 are arrayed generally in a matrix mode, i.e. in a multi-row and multi-column way, and the specific arrangement way can be set as required so that a part of connecting lines of the electrodes 18 and another part of connecting lines of the electrodes 18 are not located on the same straight line.
A plurality of control interfaces of the controller 16 are respectively used for controlling the corresponding electrode 18 to be correspondingly switched on or off when started, and the controller 16 can control each control interface to be started according to a predetermined sequence so as to enable the corresponding electrode 18 to be electrified, further enable the electrode 18 to be deenergized according to the predetermined sequence so as to form a predetermined linear electric field trend, and then enable spun filaments to be sequentially attached to the predetermined electrode 18 so as to form a spinning route of a predetermined path.
It should be noted that the control interface of the controller 16 can be directly connected to the electrode 18 to output the high voltage power required by the electrode 18 during starting, and an on-off switch can also be arranged on a conductive wire between the electrode 18 and the high-voltage power supply 15, the control interface is in communication with the corresponding on-off switch to control the corresponding on-off switch to be switched on during switching on.
A plurality of arrayed electrodes 18 are arranged on the collecting side and are controlled to be switched on or off by the controller 16 according to the predetermined sequence, so that the spun filaments are attached to the spinning track controllable collecting apparatus 2 according to a predetermined track to effectively locate the spinning attachment track. That is, a better filament can be spun to achieve a better spinning effect. Further, preferably, the apparatus includes a heating plate 19 for heating the collecting side of the base part 17, thereby heating the spun filaments on the collecting side to promote rapid volatilization of a solvent in a spinning solution, achieve better rapid solidification and filament forming and effectively improve the spinning quality.
Further, in order to better arrange the spinning track controllable collecting apparatus 2, preferably, the base part 17 is a substrate, and each electrode 18 is inlaid on the collecting side of the substrate, specifically, the base part 17 is provided with a plurality of through holes which are through in a thickness direction of the plate, and the electrodes 18 are respectively inserted into the through holes.
A plate face of the substrate should extend in a circumferential direction around the needle-shaped filament outlet head and a rotation axis direction of the needle-shaped filament outlet head so as to be tubular, where the heating plate 19 is attached to the side, away from the electrode 18, of the substrate. In order to achieve better heat curing, a heating temperature of the heating plate 19 preferably ranges from 25° C. (degrees Celsius) to 100° C.
In order to better arrange the electrodes 18, preferably, the electrodes 18 are sequentially matrix-arrayed, namely uniformly distributed in the circumferential direction of the needle-shaped filament outlet head and the rotation axis direction of the needle-shaped filament outlet head, respectively. As for the matrix-arrayed electrodes 18, the control sequence of the controller 16 can be sequential control as shown in
For better receiving the spun filaments, the array direction is preferred, i.e. the row direction and the column direction, a spacing between adjacent electrodes 18 ranges from 1 mm to 3 mm Preferably, a collecting end of the electrode 18 is circular having a diameter of no more than 1 mm or a square shape having a side length of no more than 1 mm.
Specifically, preferably the electrodes 18 are inlaid on the substrate to form an array spaced apart by 2 mm (mm is a unit of millimeter), each electrode 18 is connected to the high-voltage power supply 15 through a separate wire 20, and switching-on and switching-off of each electrode 18 is controlled by the controller 16. At a particular time, the electrode 18 at a particular location can be switched on or off to form a particular electric field circuit that directs tiny spun filaments to be attached to a pre-designed location to form regular arrangement and to form a designed shape. One side of the substrate adheres to the heating plate 19 to play a heating effect so that the volatilization of the solvent in the solution can be accelerated during spinning, and the solution can quickly form a filament.
Based on the spinning track controllable collecting apparatus 2 provided in the above-described embodiment, the present invention also provides a centrifugal electrostatic spinning device which includes any spinning track controllable collecting apparatus 2 in the above-described embodiment, where the centrifugal electrostatic spinning device includes a centrifugal rotary generator 3, and a spinning outlet 4 is formed in a side edge of the centrifugal rotary generator 3, a fluid-like material in an inner cavity can be thrown out of the spinning outlet 4 during rotation, and the base part 17 of the spinning track controllable collecting apparatus 2 is arranged around the centrifugal rotary generator 3 to collect a filamentary material thrown out of the spinning outlet 4. Since the centrifugal electronic spinning device employs the spinning track controllable collecting apparatus 2 in the above-described embodiment, the advantages of the centrifugal electronic spinning device will be described with reference to the above-described embodiment.
The centrifugal rotary generator 3 mainly includes a liquid storage cavity and one or more needle-shaped filament outlet heads arranged on a side edge of the liquid storage cavity, where an outlet of the needle-shaped filament outlet head is the spinning outlet 4. When a plurality of needle-shaped wire outlet heads is arranged, the needle-shaped filament outlet heads are uniformly distributed circumferentially around the rotation axis along the side edge of the liquid storage cavity.
Further, preferably, the device includes an axial driving apparatus for driving the spinning track controllable collecting apparatus 2 and the centrifugal rotary generator 3 to perform opposite motions in an extending direction of the rotation axis of the centrifugal rotary generator 3. The needle-shaped filament outlet head of the centrifugal rotary generator 3 can be driven to move axially relative to the collecting side of the spinning track controllable collecting apparatus 2 through the axial driving apparatus, so that spun filaments can be uniformly distributed on the collecting side of the spinning track controllable collecting apparatus 2 to form a relatively uniform film.
The axial driving apparatus may have a telescopic cylinder structure, such as a cylinder. For a better arrangement of the axial driving apparatus, preferably the axial driving apparatus includes a stepping motor 13 and a lead screw nut transmission arranged on a rack 14 of the centrifugal electrostatic spinning device. The spinning track controllable collecting apparatus 2 is fixed to the rack 14, the stepping motor 13 is installed on the rack 14 as well, and the stepping motor 13 and the centrifugal rotary generator 3 are driven by the lead screw nut transmission mechanism to drive the centrifugal rotary generator 3 to move axially. It should be noted that a speed regulating motor 10 for driving the centrifugal rotary generator 3 to rotate should be disposed between the centrifugal rotary generator 3 and the lead screw nut transmission mechanism.
Specifically, a sliding rail 11 can be fixed to the rack 14, a sliding block 8 which is slidably connected with the sliding rail 11 in an axial direction of the centrifugal rotary generator 3 is arranged, and the sliding block 8 and the sliding rail 11 cannot rotate relative to each other. A lead screw 12 with one end in transmission connection with the stepping motor 13 is arranged, the lead screw 12 is rotatably connected with the rack 14, and the lead screw 12 is in threaded connection with the sliding block 8 to form the lead screw nut transmission mechanism. The speed regulating motor 10 is fixedly installed on the sliding block 8, the centrifugal rotary generator 3 is rotatably connected with the sliding block 8 through bearings 5, and the speed regulating motor 10 is installed on the sliding block 8 and is in transmission connection with the centrifugal rotary generator 3 so as to drive the centrifugal rotary generator 3 to rotate.
A spindle 6 rotatably connected with the sliding block 8 through the bearings 5 can also be arranged and is mainly supported through two bearings 5, one end of the spindle 6 is fixedly connected with the centrifugal rotary generator 3, and the other end of the spindle 6 is connected with the speed regulating motor 10 through a coupler 7. The coupler 7 is preferably a flexible coupler, the flexible coupler 7 is used for preventing the spindle 6 from shaking, and the speed regulating motor 10 and the sliding block 8 are fixedly connected through a motor base 9.
In order to make peripheral discharged liquid more uniform, the rotation axis of the centrifugal rotary generator 3 is generally arranged to extend upward and downward, and is preferably arranged vertically. The centrifugal rotary generator 3 mainly includes a rotary liquid storage tank, and the inner cavity of the liquid storage tank is a liquid storage cavity. A plurality of needle-like filament outlet heads is typically arranged on a sidewall of the liquid storage tank. For better liquid discharging, it is preferred here that a lower end of an inner wall of the liquid storage tank inclines 3° to 7° outwards compared with an upper end, i.e. the inner wall is in an inclined shape, an included angle formed by the inclined direction and the vertical direction ranges from 3° to 7°, and the lower end inclines away from a central axis direction compared with the upper end, so that a cross section of the liquid storage tank is tapered from top to bottom. An inclination angle is preferably 5°.
Further, for better safety work, as well as better spinning, preferably the device also includes a sealing cover 1 for insulating inner and outer spaces, where the spinning track controllable collecting apparatus 2 and the centrifugal rotary generator 3 are both preferably located inside the sealing cover 1. Specifically, the axial driving apparatus, the speed regulating motor 10, and the rack 14 can also be located inside the sealing cover 1.
Each embodiment of the present specification is described in a progressive manner, each embodiment focuses on the difference from other embodiments, and the same and similar parts between the embodiments can refer to each other.
The above illustration of the disclosed embodiments enables a person skilled in the art to implement or practice the present application. Various modifications to these embodiments are readily apparent to a person skilled in the art, and the generic principles defined herein can be practiced in other embodiments without departing from the spirit or scope of the present invention. Thus, the present invention is not limited to the embodiments shown herein but falls within the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. A controllable collecting apparatus for a spinning track of a centrifugal electrostatic spinning device, comprising a base part and a controller, wherein a collecting side of the base part is provided with a plurality of electrodes distributed in an array mode, a plurality of control interfaces of the controller are respectively used for controlling the corresponding electrodes to be electrified when started, and the controller can control each control interface to be started according to a predetermined sequence.
2. The controllable collecting apparatus for a spinning track of a centrifugal electrostatic spinning device according to claim 1, further comprising a heating plate for heating the collecting side of the base part.
3. The controllable collecting apparatus for a spinning track of a centrifugal electrostatic spinning device according to claim 2, wherein the base part is a substrate, the electrodes are inlaid on the collecting side of the substrate, and the heating plate is attached to a side, away from the electrodes, of the substrate.
4. The controllable collecting apparatus for a spinning track of a centrifugal electrostatic spinning device according to claim 3, wherein the electrodes are arranged in the matrix array mode, a spacing between the adjacent electrodes in an array direction ranges from 1 mm to 3 mm, and a collecting end of the electrode is circular having a diameter of no more than 1 mm or a square shape having a side length of no more than 1 mm.
5. The controllable collecting apparatus for a spinning track of a centrifugal electrostatic spinning device according to claim 3, wherein a heating temperature of the heating plate ranges from 25° C. to 100° C.
6. A centrifugal electrostatic spinning device, comprising a centrifugal rotary generator, wherein a spinning outlet is formed on a side edge of the centrifugal rotary generator, and the centrifugal rotary generator is capable of throwing a fluid-like material in an inner cavity out of the spinning outlet when rotating; the centrifugal electrostatic spinning device further comprises the spinning track controllable collecting apparatus according to claim 1, wherein the base part of the spinning track controllable collecting apparatus is arranged around the centrifugal rotary generator to collect a filamentary substance thrown out of the spinning outlet.
7. The controllable collecting apparatus for a spinning track of a centrifugal electrostatic spinning device according to claim 6, further comprising an axial driving apparatus for driving the spinning track controllable collecting apparatus and the centrifugal rotary generator to perform opposite motions in an extending direction of a rotation axis of the centrifugal rotary generator.
8. The centrifugal electrostatic spinning device according to claim 7, comprising a rack, wherein the spinning track controllable collecting apparatus is fixed to the rack, and the axial driving apparatus comprises a stepping motor installed on the rack and a lead screw nut transmission mechanism connected between the stepping motor and the centrifugal rotary generator; and a speed regulating motor used for driving the centrifugal rotary generator to rotate is arranged between the centrifugal rotary generator and the lead screw nut transmission mechanism.
9. The centrifugal electrostatic spinning device according to claim 8, wherein the rotation axis of the centrifugal rotary generator extends upward and downward, the centrifugal rotary generator comprises a liquid storage tank, a lower end of an inner wall of the liquid storage tank inclines outward 3° to 7° compared with an upper end, and the speed regulating motor is connected with the centrifugal rotary generator through a flexible coupler.
10. The centrifugal electrostatic spinning device according to claim 9, further comprising a sealing cover, wherein the spinning track controllable collecting apparatus and the centrifugal rotary generator are both located inside the sealing cover.
11. A centrifugal electrostatic spinning device, comprising a centrifugal rotary generator, wherein a spinning outlet is formed on a side edge of the centrifugal rotary generator, and the centrifugal rotary generator is capable of throwing a fluid-like material in an inner cavity out of the spinning outlet when rotating; the centrifugal electrostatic spinning device further comprises the spinning track controllable collecting apparatus according to claim 2, wherein the base part of the spinning track controllable collecting apparatus is arranged around the centrifugal rotary generator to collect a filamentary substance thrown out of the spinning outlet.
12. A centrifugal electrostatic spinning device, comprising a centrifugal rotary generator, wherein a spinning outlet is formed on a side edge of the centrifugal rotary generator, and the centrifugal rotary generator is capable of throwing a fluid-like material in an inner cavity out of the spinning outlet when rotating; the centrifugal electrostatic spinning device further comprises the spinning track controllable collecting apparatus according to claim 3, wherein the base part of the spinning track controllable collecting apparatus is arranged around the centrifugal rotary generator to collect a filamentary substance thrown out of the spinning outlet.
13. A centrifugal electrostatic spinning device, comprising a centrifugal rotary generator, wherein a spinning outlet is formed on a side edge of the centrifugal rotary generator, and the centrifugal rotary generator is capable of throwing a fluid-like material in an inner cavity out of the spinning outlet when rotating; the centrifugal electrostatic spinning device further comprises the spinning track controllable collecting apparatus according to claim 4, wherein the base part of the spinning track controllable collecting apparatus is arranged around the centrifugal rotary generator to collect a filamentary substance thrown out of the spinning outlet.
14. A centrifugal electrostatic spinning device, comprising a centrifugal rotary generator, wherein a spinning outlet is formed on a side edge of the centrifugal rotary generator, and the centrifugal rotary generator is capable of throwing a fluid-like material in an inner cavity out of the spinning outlet when rotating; the centrifugal electrostatic spinning device further comprises the spinning track controllable collecting apparatus according to claim 5, wherein the base part of the spinning track controllable collecting apparatus is arranged around the centrifugal rotary generator to collect a filamentary substance thrown out of the spinning outlet.
15. The controllable collecting apparatus for a spinning track of a centrifugal electrostatic spinning device according to claim 11, further comprising an axial driving apparatus for driving the spinning track controllable collecting apparatus and the centrifugal rotary generator to perform opposite motions in an extending direction of a rotation axis of the centrifugal rotary generator.
16. The controllable collecting apparatus for a spinning track of a centrifugal electrostatic spinning device according to claim 12, further comprising an axial driving apparatus for driving the spinning track controllable collecting apparatus and the centrifugal rotary generator to perform opposite motions in an extending direction of a rotation axis of the centrifugal rotary generator.
17. The controllable collecting apparatus for a spinning track of a centrifugal electrostatic spinning device according to claim 13, further comprising an axial driving apparatus for driving the spinning track controllable collecting apparatus and the centrifugal rotary generator to perform opposite motions in an extending direction of a rotation axis of the centrifugal rotary generator.
18. The controllable collecting apparatus for a spinning track of a centrifugal electrostatic spinning device according to claim 14, further comprising an axial driving apparatus for driving the spinning track controllable collecting apparatus and the centrifugal rotary generator to perform opposite motions in an extending direction of a rotation axis of the centrifugal rotary generator.
19. The centrifugal electrostatic spinning device according to claim 15, comprising a rack, wherein the spinning track controllable collecting apparatus is fixed to the rack, and the axial driving apparatus comprises a stepping motor installed on the rack and a lead screw nut transmission mechanism connected between the stepping motor and the centrifugal rotary generator; and a speed regulating motor used for driving the centrifugal rotary generator to rotate is arranged between the centrifugal rotary generator and the lead screw nut transmission mechanism.
20. The centrifugal electrostatic spinning device according to claim 16, comprising a rack, wherein the spinning track controllable collecting apparatus is fixed to the rack, and the axial driving apparatus comprises a stepping motor installed on the rack and a lead screw nut transmission mechanism connected between the stepping motor and the centrifugal rotary generator; and a speed regulating motor used for driving the centrifugal rotary generator to rotate is arranged between the centrifugal rotary generator and the lead screw nut transmission mechanism.
Type: Application
Filed: Mar 24, 2020
Publication Date: Dec 31, 2020
Inventors: Han WANG (Guangzhou), Zhuye LIANG (Guangzhou), Xin CHEN (Guangzhou), Ziming ZHU (Guangzhou), Feiyu FANG (Guangzhou), Nian CAI (Guangzhou), Ningbo HU (Guangzhou), Jinghua ZENG (Guangzhou), Shuo LI (Guangzhou)
Application Number: 16/828,355
