CN114892283B - Sliding frame for electrostatic spinning equipment - Google Patents
Sliding frame for electrostatic spinning equipment Download PDFInfo
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- CN114892283B CN114892283B CN202210443447.0A CN202210443447A CN114892283B CN 114892283 B CN114892283 B CN 114892283B CN 202210443447 A CN202210443447 A CN 202210443447A CN 114892283 B CN114892283 B CN 114892283B
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- 238000010041 electrostatic spinning Methods 0.000 title claims abstract description 114
- 239000007788 liquid Substances 0.000 claims abstract description 150
- 238000000576 coating method Methods 0.000 claims abstract description 119
- 239000011248 coating agent Substances 0.000 claims abstract description 117
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 59
- 239000010959 steel Substances 0.000 claims abstract description 59
- 238000000034 method Methods 0.000 claims abstract description 21
- 230000008569 process Effects 0.000 claims abstract description 18
- 238000009987 spinning Methods 0.000 claims description 71
- 238000001523 electrospinning Methods 0.000 claims description 31
- 230000005484 gravity Effects 0.000 claims description 7
- 238000003860 storage Methods 0.000 claims description 7
- 238000005520 cutting process Methods 0.000 claims description 6
- 230000002829 reductive effect Effects 0.000 claims description 3
- 239000013589 supplement Substances 0.000 claims description 2
- 239000002121 nanofiber Substances 0.000 description 29
- 239000000758 substrate Substances 0.000 description 19
- 230000007246 mechanism Effects 0.000 description 18
- 239000010410 layer Substances 0.000 description 17
- 229920000642 polymer Polymers 0.000 description 9
- 239000000047 product Substances 0.000 description 9
- 239000004744 fabric Substances 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 230000009471 action Effects 0.000 description 5
- 239000002131 composite material Substances 0.000 description 5
- 230000005684 electric field Effects 0.000 description 5
- 239000002861 polymer material Substances 0.000 description 4
- 238000007665 sagging Methods 0.000 description 4
- 238000003491 array Methods 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 3
- 230000005686 electrostatic field Effects 0.000 description 3
- 239000000835 fiber Substances 0.000 description 3
- 239000010687 lubricating oil Substances 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- 239000002356 single layer Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000036961 partial effect Effects 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 102000004190 Enzymes Human genes 0.000 description 1
- 108090000790 Enzymes Proteins 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 239000011344 liquid material Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000002086 nanomaterial Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 229920005594 polymer fiber Polymers 0.000 description 1
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- 238000005086 pumping Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
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Classifications
-
- 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
-
- 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
-
- 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
- D01D5/0076—Electro-spinning characterised by the electro-spinning apparatus characterised by the collecting device, e.g. drum, wheel, endless belt, plate or grid
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
- Y02P70/62—Manufacturing or production processes characterised by the final manufactured product related technologies for production or treatment of textile or flexible materials or products thereof, including footwear
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
Abstract
The application relates to a carriage for electrostatic spinning equipment, wherein a plurality of coating heads are fixed on the carriage, a plurality of electrode steel wires are erected above the carriage in a manner that two ends of the electrode steel wires are fixedly connected to a machine table, a single electrode steel wire corresponds to the position of a single coating head on the carriage, and the electrode steel wires are wound into ropes by a plurality of strands of steel wires; the carriage can move along the length extension direction of the electrode steel wires with the at least two coating heads, and the liquid to be coated in the inner cavity of the coating heads can be coated on at least one corresponding electrode steel wire on the electrostatic spinning equipment in the moving process.
Description
Description of the division
The original basis of this divisional application is the patent application with application number 202011244188.6, application date 2020, 11/9, and the name of "an electrostatic spinning device", which claims priority from the patent application with application number 202020539279.1, and priority date 2020, 4/13.
Technical Field
The application relates to the technical field of electrostatic spinning, in particular to a sliding frame for electrostatic spinning equipment.
Background
With rapid temperature rise of nanomaterial research, the electrospinning technology gradually becomes a research hotspot. In recent years, the electrostatic spinning technology has become the mainstream technology for manufacturing nanofibers due to the characteristics of continuity, convenience, rapidness, simple process and low cost; the electrostatic spinning nanofiber has the advantages of controllable morphology, large specific surface area, good air permeability and the like, and has been widely applied to the fields of filter materials, protective materials, enzyme carriers, sensor films and the like. The electrostatic spinning technology for preparing the polymer nanofiber has the advantages of low cost, easy operation, high efficiency and the like, and is considered to be the most effective method for preparing a large number of polymer continuous nanofibers.
The utility model provides a vertical electrostatic spinning equipment as put forward in patent document with publication number CN109554773A among the prior art, includes equipment main body frame, equipment main body frame's front end is provided with the dodge gate, the front end middle part surface fixed mounting of dodge gate has the storing box, the inside of storing box is provided with cleaning cloth and lubricating oil storage bottle, cleaning cloth is located one side of lubricating oil storage bottle. The vertical electrostatic spinning equipment is provided with the storage box, the fixed groove, the movable plate, the telescopic rod and the adjustable control console, so that people can clean the vertical electrostatic spinning equipment conveniently, lubricating oil can be smeared on each joint of the vertical electrostatic spinning equipment, the operation of the vertical electrostatic spinning equipment is flexible, people can observe and record various parameters and operation conditions in the electrostatic spinning process conveniently, the height of the control console can be adjusted freely, and the operation of the vertical electrostatic spinning equipment by people is easy.
However, the above solution has at least the following drawbacks: the device provided by the device is used for producing only single-layer electrostatic spinning, the spinning diameter and the spinning gap of spun cloth are single, and the application limitation degree is large due to single function; in addition, in the proposed nozzle type electrostatic spinning process, the condition of uneven spinning inevitably exists, and the quality of the electrostatic spinning product is uneven; in addition, the amount of the nanofiber spun by the nozzle type electrostatic spinning is very small, the requirement of a large-area electrostatic spinning product cannot be met, and the producibility is very low.
Patent publication No. US2019345638A1 discloses an apparatus for continuous needle-free electrospinning of a liquid polymer source into a nano-or sub-micron polymer web, comprising an electrospinning housing, a wire drive system external to the electrospinning housing, and a plurality of continuous electrode wires. The electrospinning housing includes an electrospinning zone and one or more liquid polymer coating devices, in which the liquid polymer is coated onto a plurality of continuous electrode wires. The plurality of continuous electrode wires are parallel to each other, engage the wire drive system, and extend through the electrospinning housing and one or more liquid polymer coating devices positioned therein. A high voltage is applied to a plurality of continuous electrode wires in the electrospinning zone to form nano-or sub-micro-sized polymer fibers from the liquid polymer coated on the electrode wires. However, the embodiment of the present application is "multi-mono-multi", that is, it can use only one spinning solution, and cannot obtain a substrate having at least two film structures stacked on each other but different in respective properties.
Patent document publication No. WO2014171624A1 discloses an electrospinning device, and an object of the present application is to provide an electrospinning device capable of: forming a buffer part between units of the electrospinning device, and arranging an adjusting roller which moves up and down on the buffer part so as to adjust the conveying speed and time of the long sheet passing through each unit and prevent the long sheet from buckling, sagging, breaking, cracking and damaging; solves the problem of abnormal long sheet transfer possibly caused by electrostatic attraction in the electrostatic spinning process, and in the nanofiber production step, long sheet sagging detection devices are arranged in front of and behind a spinning area to detect the sagging condition of the long sheet. And the long sheet is used for transmitting signals to an auxiliary long sheet transmitting device so as to adjust the long sheet transmitting speed according to the detected signals, and the long sheet transmitting speed is fixed on the collector through electrostatic absorption, so that the transmitting speed is automatically improved. The plate sags, so that the problem caused by sagging of the plate is effectively prevented; thus mass-producing nanofibers with uniform quality. However, the spinning diameter and the spinning gap spun by the electrospinning device are single, and the function is single, so that the application limitation degree is large; in addition, in the nozzle type electrostatic spinning process proposed by the method, the condition of uneven spinning inevitably exists, and the quality of the electrostatic spinning product is uneven.
Chinese patent publication No. CN210140650U discloses a needleless reciprocating electrostatic spinning apparatus comprising a base plate. The high-voltage power supply device is arranged on the substrate; the tension adjusting device is arranged on the substrate, and the tension adjusting device and the high-voltage power supply device are arranged at intervals. The two ends of the high-voltage electrode are respectively connected with the high-voltage power supply device and the tension adjusting device, and the high-voltage electrode can be provided with high-voltage positive equipment under the action of the high-voltage power supply; the liquid coating device is connected between the high-voltage power supply device and the tension adjusting device in a sliding manner along the extending direction of the high-voltage electrode, a closed coating liquid channel is formed in the coating liquid device, and the high-voltage electrode passes through the coating liquid channel. The needleless reciprocating electrostatic spinning device can solve the problem of volatilization caused by the open placement of the solution, ensure the stability of the concentration of the solution and further ensure the production quality of the nanofiber. However, the device can not solve the problem that the amount of the electrospun nanofiber is very small, can not meet the requirement of large-area electrospun products, and has very low producibility.
Patent publication No. US2014061959A1 discloses a method and a device for applying a liquid polymer material onto the active spinning zone of a cord of a spinning member of a spinning electrode, wherein the application device is reversibly movable along the active spinning zone of the cord in the device for producing nanofibers by electrospinning a liquid material in a high intensity electrostatic field between at least one spinning electrode, and a collecting electrode arranged thereon. The liquid polymer material is applied to the cord around its entire circumference without any contact with the gaseous environment in the spinning space, wherein the application means is reversibly moved, whereas the thickness of the layer of liquid polymer material is decreasing when the cord leaves the application means and the process of electrospinning the liquid polymer material applied to the cord starts immediately after leaving the application means. However, the application cannot solve the problem that the amount of the nanofiber spun by the electrostatic spinning is very small, cannot meet the requirement of large-area electrostatic spinning products, and has very low producibility.
Furthermore, there are differences in one aspect due to understanding to those skilled in the art; on the other hand, as the inventors studied numerous documents and patents while the present application was made, the text is not limited to details and contents of all that are listed, but it is by no means the present application does not have these prior art features, the present application has all the prior art features, and the applicant remains in the background art to which the rights of the related prior art are added.
Disclosure of Invention
Aiming at the problems that the spinning diameter and the spinning gap are single and the application limitation is large due to single function of single spinning diameter and cloth gap which are produced by the electrostatic spinning equipment proposed by the prior art, and the problems that the spinning is uneven and the quality of an electrostatic spinning product is uneven inevitably exist in the nozzle type electrostatic spinning technology proposed by the electrostatic spinning equipment, the application provides the electrostatic spinning equipment, and the spinning can continuously carry out electrostatic spinning through two or more desk type electrostatic spinning machines by combining two or more desk type electrostatic spinning machines which are independently produced. The user can adopt the same spinning solution on different desk-top electrostatic spinning machines, can overcome the unavoidable uneven problem of spinning in the shower nozzle electrostatic spinning technology well, guarantee that the electrostatic spinning goods quality is stable. In addition, the application abandons the traditional nozzle type electrostatic spinning, provides equipment for electrostatic spinning by utilizing the fixed electrode steel wire, can provide a larger spinning free surface, and has large amount of nano fibers obtained by electrostatic spinning, so that the electrostatic spinning equipment provided by the application can meet the requirement of large-area electrostatic spinning products and has high producibility.
The application provides electrostatic spinning equipment, which comprises at least one bench type electrostatic spinning machine and is characterized in that two or more bench type electrostatic spinning machines can be spliced back and forth to form the electrostatic spinning equipment, and each bench type electrostatic spinning machine can respectively adopt spinning solutions different from each other, so that at least two layers of film structures which are mutually overlapped and have different properties can be obtained on a substrate passing through the electrostatic spinning equipment. The spinning solutions adopted by the desk-top electrostatic spinning machines can be the same in component but different in concentration, or different in component, or the components and the concentration are the same, so that the performances of the film structures obtained after electrostatic spinning can be the same or different. The fiber arrays of each layer of film structure in the spinning prepared by the electrostatic spinning equipment are arranged in different spaces, so that the spinning uniformity can be improved, and more excellent effects can be obtained on any one of spinning diameter, spinning cloth gap, material composition and material performance.
According to a preferred embodiment, at least one of the bench electrostatic spinners is capable of delivering the substrate to a next bench electrostatic spinners in such a way that the spatial gap in the film structure formed by electrostatic spinning on the substrate surface is adjustable.
According to a preferred embodiment, at least one of the bench-type electrospinning machines is provided with a rotating mechanism, and the bench-type electrospinning machine can have the same or different spatial arrangement of fiber arrays as other bench-type electrospinning machines by adjusting the rotating mechanism so that the film structure led out after the electrostatic spinning thereof can have.
According to a preferred embodiment, at least one conveying roller is arranged on at least one bench-type electrostatic spinning machine, and the bench-type electrostatic spinning machine can greatly compress the space gap in the film structure formed by electrostatic spinning by regulating the relative height of the conveying roller, so that at least two layers of film structures which are separable from each other can be synchronously obtained on the substrate after passing through the electrostatic spinning equipment. At least two layers of film structures obtained after passing through the electrostatic spinning equipment are mutually overlapped. Under the condition that the relative height of the conveying roller is regulated and the sufficient space gap in the film structure formed by the electrostatic spinning is kept, the two film structures respectively obtained by the front and rear bench electrostatic spinning machines are tightly combined. Under the condition that the relative height of the conveying roller is regulated so that the space gap in the film structure formed by the electrostatic spinning is greatly compressed, the two film structures respectively obtained by the front and rear bench electrostatic spinning machines are overlapped but have no tight combination effect. After electrostatic spinning, the two layers of spinning cloth can be separated. In this way, in a single non-intermittent electrostatic spinning process, spinning fabrics with the same or different performances can be synchronously obtained.
According to a preferred embodiment, a carriage is arranged on the table of at least one table-type electrostatic spinning machine, which carriage can move with the at least two coating heads along the length extension direction of the electrode wires, and in the course of the movement, the liquid to be coated in the inner cavities of the coating heads can be coated on the corresponding at least one electrode wire on the table-type electrostatic spinning machine.
According to a preferred embodiment, the bottom of the carriage is detachably provided with a collecting tank for collecting liquid to be coated that overflows when the electrode wire moves through the coating head.
According to a preferred embodiment, the part of the electrode wire passing through it remains no more liquid to be coated than the spinning solution remaining in its lower part in the vertical direction as the coating head moves. When the coating head moves to coat the electrode wire with the spinning solution, the spinning solution below the electrode wire is relatively less. And after the coating head leaves the part of the electrode steel wire, most spinning solution on the electrode steel wire is positioned above the steel wire, part of the spinning solution can form a Taylor cone for spinning under the action of electric field force, and part of the spinning solution moves downwards under the action of gravity, and the spinning solution at the bottom of the steel wire is less, so that the spinning solution on the electrode steel wire is not easy to form liquid drops to drop or remain on the electrode steel wire.
According to a preferred embodiment, the coating head comprises a wire guide slot through which the electrode wire is passed in such a way that it is arranged eccentrically with respect to the radial conduction space of the wire guide slot.
The current more advanced electrostatic spinning generating device for nanofiber manufacturing equipment capable of realizing mass production is to uniformly coat a polymer solution on a metal electrode wire through a coating device, so that efficient nanofiber production can be realized. In the prior art, as a device for preparing nano fibers by electrostatic spinning is proposed in the patent document with the publication number of CN105568409B, the spinning jet flow and coating are realized by the rotary motion of an electrode steel wire, part of liquid on the electrode steel wire is stuck to a machine table due to gravity in the process of the spinning jet flow and cannot be treated in time, and the part of liquid is easy to be stuck to a part for conveying the electrode steel wire, such as a metal guide wheel, and once the part is blocked, the maintenance cost is high; in addition, in the driving mode of the rotary motion, the electrode steel wire coated with the liquid always enters an electric field from the fixed side, most of the liquid is spun and sprayed onto the substrate at a position close to the fixed side, and part of the liquid is lost due to gravity in the conveying process, so that the liquid capable of spinning and spraying on the other side of the electrode steel wire is greatly reduced, and a deposited nanofiber layer on the obtained product is uneven.
The application also provides electrostatic spinning equipment, which comprises: at least two coating heads, each coating head is provided with at least one liquid supply hole, and liquid to be coated is introduced into the inner cavity of the coating head through the liquid supply holes; the two ends of the electrode steel wire respectively penetrate through the inner cavity of the coating head so as to be soaked in the liquid to be coated; the machine is characterized in that the machine is connected with a sliding frame in a sliding manner, the sliding frame can move along the length extending direction of the electrode steel wires with the at least two coating heads, and in the moving process, the liquid to be coated entering the inner cavities of the coating heads through the liquid supply holes can be coated on a corresponding electrode steel wire of the electrostatic spinning device. Aiming at the problems that the electrostatic spinning equipment for preparing the nanofiber cannot timely process the liquid adhered to the electrode steel wire due to gravity, so that once the blockage occurs, the maintenance cost is high, and the nanofiber layer on the obtained product is uneven due to the driving mode of the adopted rotary motion.
The application also provides a coating head for an electrostatic spinning device, wherein a first column member is detachably arranged in the coating head, the first column member is provided with a bearing channel extending along the length direction of a column of the first column member, a second column member is detachably fixed in the first column member, and a steel wire guide groove is jointly limited by the second column member and the first column member, and the coating head is characterized in that a carriage of the electrostatic spinning device for fixing the coating head can move along the length extending direction of an electrode steel wire with at least two coating heads, and in the moving process, liquid to be coated entering the inner cavity of each coating head through a liquid supply hole of the corresponding coating head can be coated on a corresponding electrode steel wire of the electrostatic spinning device.
According to a preferred embodiment, the first column member is provided with a receiving channel therein, and a wire guide groove is provided in the receiving channel, wherein the liquid to be coated in the wire guide groove is applied to the electrode wire in the circumferential direction when the electrode wire is moved relative to the coating head in a manner penetrating the wire guide groove by the movement of the carriage.
According to a preferred embodiment, the bottom of the carriage is detachably provided with a collecting tank for collecting liquid to be coated that overflows when the electrode wire moves through the coating head.
According to a preferred embodiment, the coating head is provided with a liquid supply hole and a mounting hole which are mutually crossed and penetrated, a first column member is arranged in the mounting hole in a form-fit manner, the first column member is provided with a bearing channel extending along the length direction of the column, and the inner wall of the bearing channel is also provided with a steel wire guide groove for guiding the electrode steel wire in a sliding manner.
According to a preferred embodiment, the receiving passage is detachably mountable with a second column member capable of defining a movable range of the electrode wire within the wire guide groove.
According to a preferred embodiment, the first cylinder member has a liquid supply port, and the liquid supply hole is communicated with the inner cavity of the steel wire guide groove, which is communicated with the bearing channel, through the liquid supply port.
According to a preferred embodiment, the second cylindrical member is provided with a recess, so that the supply of the liquid to be coated into the second cylindrical member and thus into the electrode wire is achieved through the recess when the electrode wire is being restrained from moving in the wire guide groove by the second cylindrical member.
According to a preferred embodiment, the recess and the liquid supply hole are at least partially coincident with each other in radial direction in the assembled state of the first cylinder member and the second cylinder member, so that the liquid passages communicate with each other.
According to a preferred embodiment, the liquid to be coated from the liquid supply hole of the coating head is allowed to enter the liquid supply chamber in the first cylinder member so that the electrode wire is penetrated in the wire guide groove in such a manner that the electrode wire is circumferentially contacted with the liquid to be coated, whereby the liquid to be coated can be coated on at least two of the electrode wires spaced in parallel with each other while the carriage is moved along the electrode wire.
Drawings
FIG. 1 is a simplified schematic diagram of the positional relationship of a first and a second bench electrostatic spinning machine provided by the present application;
FIG. 2 is a simplified cross-sectional schematic view of a bench electrostatic spinning machine provided by the present application;
FIG. 3 is a simplified overall structure schematic of the electrospinning apparatus of the present application;
fig. 4 is a simplified overall structure schematic of the carriage of the present application.
List of reference numerals
1: coating head 2: electrode wire 3: machine table
4: carriage 5: liquid 6 to be coated: liquid supply hole
7: mounting hole 8: liquid supply chamber 9: first column member
10: the bearing channel 11: wire guide slot 12: second column member
13: liquid supply port 14: liquid storage chamber 15: groove
16: leak 17: collection tank 18: first bench electrostatic spinning machine
19: a second bench electrostatic spinning machine 20: moving mechanism
21: conveying roller 22: guide rail bar 23: guide rail
24: chute 25: first telescopic link 26: second telescopic rod
28: conveying roller combination mechanism 29: rotating mechanism
Detailed Description
The present application will be described in detail with reference to the accompanying drawings.
Example 1
As shown in fig. 1, the present application proposes an electrospinning apparatus, which may be composed of two or more stages of electrospinning machines spliced together. The electrostatic spinning device can deposit and form two or more layers of nano fibers on a substrate in a spinning jet flow mode, and the order degree/unordered degree of the spatial arrangement of the fiber arrays of each layer of film structure is different. The single stage electrospinning machine mainly includes a moving mechanism 20, a conveying roller 21, and a rotating mechanism 29.
The rotating mechanism 29 may rotate relative to and/or be fixed relative to the body of the counter top electrospinning machine. The electrostatic spinning coating head, the electrode wire and the like are loaded and fixed on a rotating mechanism 29, and the rotating mechanism 29 can drive the electrostatic spinning coating head, the electrode wire and the like to rotate. During electrospinning, the rotation mechanism 29 is controlled to operate, and the angle at which the nanofibers are collected on the substrate changes. The distribution or staggering angle, etc. of the nanofibers collected into the different layers on the substrate is different. The relative angles formed between the electrode steel wires on different bench electrostatic spinning machines and the base material can be adjusted.
The moving mechanism 20 is disposed at the bottom of a single stage type electrostatic spinning machine. In the case of only a single layer of nanofibers, the bench electrostatic spinners can be produced independently of each other. Under the condition that the composite layer nanofiber is needed, a user can push the desk type electrostatic spinning machine to move, and splice the spinning machines together to produce the composite layer nanofiber.
The input end and the output end of the desk type electrostatic spinning machine are both provided with conveying rollers 21. The conveying roller 21 can be moved up and down along the table type electrostatic spinning machine by external driving. And is fixed relatively to the desk type electrostatic spinning machine at the corresponding position.
The substrate is fed from the input end of the bench electrostatic spinning machine, enters the interior of the bench electrostatic spinning machine along the conveying roller 21, is guided out from the output end of the bench electrostatic spinning machine after passing through the conveying roller combination mechanism 28, and is conveyed to the spinning winding mechanism for winding along the conveying roller 21 at the output end or is conveyed to another bench electrostatic spinning machine for further processing.
The height of the conveying roller 21 at the upper and lower positions on the table type electrostatic spinning machine is adjustable. The height difference between the transport roller 21 and the transport roller assembly 28 is adjustable such that the pressure applied to the spun yarn guided along this transport roller 21 varies. The bonding force between the substrate and the spun yarn attached to the substrate via electrospinning varies accordingly. It is particularly suitable for the production of the composite nanofiber layer proposed by the application. The single-layer spun yarn produced by the first bench electrostatic spinning machine 18 is not pressed, is not compacted, has larger space gaps, and can be transported into the second bench electrostatic spinning machine 19 in a mode of keeping the larger space gaps, so that the spinning solution formed in the second bench electrostatic spinning machine 19 can be adhered to the surface of the upper layer spun yarn, and can enter the interior of the upper layer spun yarn by means of the space gaps to form a composite nanofiber layer with stable composite interface in a staggered manner.
The first telescopic rod 25 is provided at the bottom of the side where the output end of the bench type electrostatic spinning machine is located. Correspondingly, a receiving part is arranged at the bottom of the side where the input end of the desk type electrostatic spinning machine is positioned.
The free end of the first telescopic rod 25 may be connected to a receiving portion of another bench type electrostatic spinning machine. So that the two electrostatic spinning machines are relatively fixed. And the length of the spinning machine is adjusted, and the distance between the two spinning machines can also be adjusted.
The receptacles mentioned here are adapted to the shape of the free end of the first telescopic rod 25.
Preferably, the first telescopic rod 25 is movable and/or fixed relative to the spinning machine under external drive. For example, this can be achieved by screw drives which are fixedly connected in parallel to the inner wall of the spinning machine. When the first telescopic rod 25 slides inwards relative to the bottom of the spinning machine, the first telescopic rod 25 is relatively fixed in a fixed position and hidden at the bottom of the spinning machine. When the first telescopic rod 25 is slid outwards with respect to the bottom of the spinning machine, the first telescopic rod 25 is relatively fixed in another fixed position, extending out of the spinning machine for connection to the receiving portion of another spinning machine.
The free end of the first telescopic rod 25 can be locked remotely to the receiving portion. The free end of the receiving portion or the first telescopic rod 25 may be provided with an actuator constituted by an electric motor and an electromagnet.
At least one guide rail strip 22 is fixedly arranged on the ground and used for guiding the accurate splicing of different bench electrostatic spinning machines. Correspondingly, the bottoms of the spinning machines are respectively provided with a guide rail 23 which is matched with the bottoms of the spinning machines.
A chute 24 is provided alongside the rail 22. The user only needs to push the bench electrostatic spinning machine to the corresponding position of the chute 24, and the moving mechanism 20 corresponds to the chute 24 and moves the bench electrostatic spinning machine along the chute 24 in an oriented manner. The guide rail 23 can be accurately corresponded to the guide rail bar 22.
The guide rail 23 or the guide rail bar 22 is provided with a slide locking mechanism. Namely, the state of the sliding locking mechanism is remotely controlled, so that different bench electrostatic spinning machines can be fixed at corresponding positions.
By adjusting the second telescopic rod 26, the distance between the conveying roller combination mechanism 28 and the spinning machine table is also changed correspondingly. The spinning distance is adjusted.
Example 2
This embodiment may be a further improvement and/or addition to embodiment 1, and the repeated description is omitted. The whole and/or partial content of the preferred embodiment of example 1 may be supplemented to this example without conflict or contradiction.
Fig. 1 shows a simplified overall structure of an electrostatic spinning device according to the present application. The electrostatic spinning device deposits and forms nano fibers on a substrate in a spinning jet flow mode. The electrospinning apparatus mainly comprises a carriage 4, a coating head 1 and an electrode wire 2.
The plurality of coating heads 1 are each fixed on the carriage 4.
The plurality of electrode wires 2 are erected above the carriage 4 in such a manner that both ends thereof are fixedly connected to the machine 3. The single electrode wire 2 corresponds to the position of the single coating head 1 on the carriage 4.
The carriage 4 can reciprocate simultaneously along the length extension direction of the motor wire with the plurality of coating heads 1 under external driving.
The spinning area where the electrode wire 2 is located is directed towards the substrate. The substrate and the electrode wire 2 are in an electric field.
The coating head 1 coats the electrode wire 2 with a liquid 5 to be coated. The electrode wire 2 coated with the liquid may be formed into nanofibers on a substrate by means of jet spinning.
After the spinning jet, the coating liquid on the electrode wire 2 is reduced. The coating head 1 constantly supplements the coating with the reciprocating movement of the carriage 4. At the same time, the coating head 1 scrapes off part of the liquid on the steel wire, which is viscous and hangs below the steel wire due to gravity.
The scraped off portion of the liquid falls directly into the pre-placed collection tank 17 without falling onto the machine 3.
Fig. 2 shows a simplified overall structure of the carriage 4 according to the application. The coating head 1 in the application realizes the coating process by mutually assembling and matching with the first column member 9 and the second column member 12.
In particular, when the wire electrode and the coating head 1 need to be cleaned, the components can be conveniently separated. The cleaning checks are performed separately so as not to clog the pipes.
The parts of the electrostatic spinning device of the application are described in detail as follows:
the coating head 1 is provided with a liquid supply hole 6 and a mounting hole 7 which are crossed and penetrated. The intersecting penetration here refers to a positional relationship in which central axes of two through holes intersect and do not coincide with each other.
The mounting holes 7 penetrate forward and backward along the longitudinal direction of the electrode wire 2.
The liquid supply holes 6 are formed to penetrate right and left in the parallel direction of the plurality of coating heads 1.
And in the present application, the aperture of the liquid supply hole 6 is smaller than the aperture of the mounting hole 7. That is, the inside of the liquid supply hole 6 is partitioned by the inner wall of the mounting hole 7 into two liquid supply chambers 8, which are distributed on both sides of the coating head 1.
Both sides of the coating head 1 can be communicated with an external liquid storage tank or other inner cavities of the coating head 1.
For the side surface which does not need to communicate with other components, a plug may be attached to the liquid supply hole 6 on the side.
The liquid feeding mode of the coating head 1 can be a cascade liquid feeding mode. Namely, every two coating heads 1 are taken as a liquid inlet unit. From the liquid reserve tank of peripheral hardware respectively communicate to a plurality of feed liquor units. The liquid 5 to be coated is supplied simultaneously to the two coating heads 1 by a single liquid feed unit.
The liquid feeding mode of the coating head 1 can be a mode of series liquid feeding. I.e. a plurality of coating heads 1 arranged in parallel are communicated with each other in sequence. A coating head 1 on the longitudinal end of the carriage 4 is connected to an external reservoir. While the outside of the coating head 1 on the other end portion in the longitudinal direction of the carriage 4 is provided with a stopper. The coating head 1 located between the longitudinal ends of the carriage 4 has the task of delivering liquid into the adjacent coating head 1 located at its next stage.
Further preferably, the coating head 1 may be mirror-symmetrical about the central axis of the mounting hole 7, without distinguishing between the front and rear directions in use.
Preferably, the electrode wire 2 may be wound in a rope form from a plurality of strands of wire. The smaller radius of curvature of its surface makes it easier to induce spinning. The non-directionality of its surface allows the jet to be ejected at any location. The spinning yield is larger, and the electrostatic spinning process can be more efficient and stable.
Regarding the mounting manner between the coating head 1, the first cylinder member 9, the second cylinder member 12 and the electrode wire 2:
a first column member 9 is slidably connected in a form-fitting manner in the mounting hole 7.
Preferably, the shape of the mounting hole 7 in the present application is similar to an inverted omega shape. I.e. the inner wall of the mounting hole 7 is also vertically open. The user can conveniently extend the fingers into the mounting holes 7 to push the first column member 9 or the second column member 12 outwards.
The outer wall of the first column member 9 is provided with a semi-open receiving passage 10. The receiving channel 10 is adapted to slidingly engage the second cylinder member 12.
The receiving passage 10 is formed by the first cylinder member 9 intersecting a cylindrical cutting body having its central axis parallel to the central axis of the first cylinder member 9.
A steel wire guide groove 11 is arranged on the inner wall of the bearing channel 10. The wire guide groove 11 is used for guiding the electrode wire 2.
In use, the first cylinder member 9 is first installed into the applicator head 1. The electrode wire 2 is then placed into the wire guide groove 11 from the open end of the upper coating head 1. Finally, the second cylinder member 12 is slid onto the first cylinder member 9. The electrode wire 2 is defined on the first cylinder member 9, completing the assembly.
Preferably, a detachable baffle plate is further arranged on the end face of the vertical top end of the coating head 1, and the detachable baffle plate can be fixed by bolts or screws.
Regarding the liquid introduction process between the coating head 1, the first cylinder member 9, the second cylinder member 12, and the electrode wire 2:
the first cylinder member 9 is provided with a liquid supply port 13 in the radial direction. The liquid supply port 13 is perpendicularly penetrated with the wire guide groove 11. When the first cylinder member 9 is assembled to the coating head 1, the liquid supply port 13 communicates with the liquid supply hole 6.
The liquid supply port 13 partially coincides with the housing passage 10. The liquid in the liquid storage chamber 14 inside the liquid supply interface 13 can flow to the bearing channel 10 and the steel wire guide groove 11.
The outer wall of the second cylinder member 12 is provided with a recess 15. The recess 15 is formed by intersecting the second cylindrical member 12 with a cylindrical cut body having its central axis and the central axis of the second cylindrical member 12 being different from each other.
The cylindrical cutting body is a virtual auxiliary tool for helping to define the shape of the groove or channel in the present application, and can also be understood as a cutting mode used when machining the component.
After the second cylindrical member 12 is installed, the groove 15 is located above the wire guide groove 11.
The grooves 15 and the liquid supply ports 13 are at least partially overlapped and communicated with each other.
In use, liquid 5 to be coated from the liquid supply aperture 6 of the coating head 1 is first passed through the liquid supply chamber 8. And then into the reservoir chamber 14 within the first barrel member 9. The pumping of liquid continues until it fills the recess 15 in the second cylinder member 12. Up to this point the electrode wire 2 in the first cylinder member 9 is completely covered by the liquid 5 to be coated.
Regarding the process of collecting the surplus liquid on the electrode wire 2:
the wire guide groove 11 has two open end surfaces on both sides of the first column member 9, respectively.
The electrode wire 2 passes through the open end face and then enters the inside of the first column member 9. The cross-sectional area of the open end face may be preset.
The carriage 4 is provided with at least one leak 16 in pairs. Each two leak holes 16 are respectively arranged on two sides of one coating head 1.
At least one collecting trough 17 is provided on the back of the carriage 4. The collection trough 17 may be drawer mounted. A collecting tank 17 is located below the weep hole 16.
The electrode wire 2, which has been coated with liquid, can be smoothly passed out of the first cylinder member 9 during the reciprocation of the carriage 4. Meanwhile, the liquid is smoothed down, so that the electrode steel wire 2 is uniformly coated.
For the electrode wire 2 to be inserted into the first column member 9, in particular, for the electrode wire 2 which is viscous-suspended by gravity with an excessive part of the liquid, when passing through the open end face, the excessive part of the liquid is scraped off, and the scraped off part of the liquid falls down through the leak hole 16 and into the previously placed collecting tank 17.
Regarding the electrospinning process of the present application: the substrate is placed between the spinning area and the collecting electrode, and can be attached to the surface of the collecting electrode or positioned by an external positioning structure;
the positive electrode of the high-voltage power supply is conducted with the electrode steel wire 2, the negative electrode is conducted with the collecting electrode, and a high-voltage electrostatic field is formed between the spinning area of the electrode steel wire 2 and the collecting electrode;
when the carriage 4 is driven to reciprocate, the coating head 1 uniformly coats the spinning solution on the surface of the electrode steel wire 2; under the action of electrostatic field and electric field force, the electrode steel wire 2 is coated with a solution to form charge aggregation, and as the electrode steel wire 2 is wound into a rope by a plurality of steel wires, the surface curvature is smaller, so that the surface is convex, the solution breaks through surface tension under the action of the electric field force to form spinning jet flow, and finally nano fibers are deposited on a base material; after spinning jet, the reciprocating coating head 1 carries out supplementary coating and simultaneously removes redundant residual liquid on the electrode steel wire 2.
Example 3
This embodiment may be a further improvement and/or addition to embodiments 1 and 2, and the repeated description is omitted. The whole and/or partial content of the preferred embodiments of examples 1 and 2 may be supplemented by this example without conflict or contradiction.
Fig. 2 shows a simplified overall structure of a coating head 1 for an electrospinning device according to the present application.
A first cylinder member 9 is detachably mounted in the coating head 1.
The coating head 1 is provided with a liquid supply hole 6 and a mounting hole 7. The liquid supply hole 6 and the mounting hole 7 cross each other. The first cylinder member 9 is mounted in a form-fitting manner into the mounting hole 7.
The first column member 9 is provided with a receiving channel 10. The receiving channel 10 extends along the length of the column of the first column member 9. The receiving channel 10 is used to detachably secure the second cylinder member 12 within the first cylinder member 9.
A steel wire guide groove 11 is arranged on the inner wall of the bearing channel 10. The wire guide channel 11 is defined by the second cylinder member 12 together with the first cylinder member 9. The second column member 12 defines a movable range of the electrode wire 2 within the wire guide groove 11. The wire guide groove 11 is used for slidably guiding the electrode wire 2.
The first cylinder member 9 has a liquid supply port 13. The liquid supply hole 6 is communicated with the inner cavity of the bearing channel 10 through the liquid supply interface 13. The "cavity of the loading channel 10" herein means a part of the cavity of the loading channel 10 communicating with at least the wire guide groove 11.
The second cylindrical member 12 is provided with a recess 15. The grooves 15 serve to guide the liquid to be coated, which enters via the liquid feed holes, to the inner cavity of the receiving channel, which communicates with the wire guide groove.
The electrode wire 2 is supplied with the liquid 5 to be coated through the grooves 15 while the electrode wire 2 moves in the wire guide groove 11. The movement of the electrode wire 2 within the wire guide groove 11 is restrained by the second column member 12. The electrode wire 2 here refers to the part of the wire located inside the second cylindrical member 12.
After the first cylinder member 9 and the second cylinder member 12 are both assembled on the coating head 1, the groove 15 and the liquid supply hole 6 are at least partially overlapped with each other in the radial direction. The grooves 15 are communicated with the liquid passages of the liquid supply holes 6.
The liquid 5 to be coated can enter the liquid supply chamber 14 in the first cylinder member 9. The liquid 5 to be coated here comes from a liquid supply orifice 6 of the coating head 1. The electrode wire 2 penetrates the wire guide groove 11. The electrode wire 2 penetrating through the wire guide groove 11 circumferentially contacts the liquid 5 to be coated. The liquid 5 to be coated can be applied to the electrode wire 2 while the carriage 4 moves along the electrode wire 2. The electrode wire 2 herein refers to at least two electrode wires 2 spaced apart from each other in parallel.
The electrospinning device has a carriage 4. The carriage 4 is used to fix the coating head 1. The carriage 4 is movable with at least two coating heads 1 along the length extension of the electrode wire 2. During the movement, the liquid 5 to be coated enters the inner cavity of each coating head 1 through the liquid supply holes 6 of the corresponding coating head 1, and the liquid 5 to be coated can be coated on the corresponding electrode wire 2 of the electrostatic spinning device.
The electrode wire 2 penetrates the wire guide groove 11, and the electrode wire 2 moves relative to the coating head 1 by the movement of the carriage 4. So that the electrode wire 2 is coated with the liquid 5 to be coated in the wire guide groove 11.
The bottom of the carriage 4 is provided with a collecting tank 17. As the electrode wire 2 moves through the coating head 1, the liquid 5 to be coated overflows and is collected by the collecting tank 17. Preferably, for smooth collection of the overflowed liquid to be coated, a slot-shaped orifice is provided in the bottom of the carriage, which orifice is located near the two ends of the coating head from which the electrode wire is threaded.
Preferably, the electrode steel wires are fixed on two sides of the machine table.
Preferably, each coating head is provided with a liquid supply port axially opposite to the liquid supply hole. The liquid supply connection mentioned here can be closed off by a plug and can also serve as a liquid supply source for another coating head. Wherein the liquid to be coated from the liquid supply hole of the first coating head can go to the liquid supply hole of the other coating head through the inner cavity of the first coating head and the liquid supply interface of the first coating head.
Regarding the mounting manner between the coating head 1, the first cylinder member 9, the second cylinder member 12 and the electrode wire 2:
the first column member 9 is slidably connected in a form-fitting manner in the mounting hole 7. Preferably, the shape of the mounting hole 7 in the present application is similar to an inverted omega shape. I.e. the inner wall of the mounting hole 7 is also vertically open. The user can conveniently extend the fingers into the mounting holes 7 to push the first column member 9 or the second column member 12 outwards.
The outer wall of the first column member 9 is provided with a semi-open receiving passage 10. The receiving channel 10 is adapted for sliding connection with a second cylindrical member 12. The receiving passage 10 is formed by the first cylinder member 9 intersecting a cylindrical cutting body having its central axis parallel to the central axis of the first cylinder member 9. A steel wire guide groove 11 is arranged on the inner wall of the bearing channel 10. The wire guide groove 11 is used for guiding the electrode wire 2.
In use, the first cylinder member 9 is first installed into the applicator head 1. The electrode wire 2 is then placed into the wire guide groove 11 from the open end of the upper coating head 1. Finally, the second cylinder member 12 is slid onto the first cylinder member 9. The electrode wire 2 is defined on the first cylinder member 9, completing the assembly.
Preferably, a detachable baffle plate is further arranged on the end face of the vertical top end of the coating head 1, and the detachable baffle plate can be fixed by bolts or screws.
It should be noted that the above-described embodiments are exemplary, and that a person skilled in the art, in light of the present disclosure, may devise various solutions that fall within the scope of the present disclosure and fall within the scope of the present disclosure. It should be understood by those skilled in the art that the present description and drawings are illustrative and not limiting to the claims. The scope of the application is defined by the claims and their equivalents.
Claims (5)
1. The electrostatic spinning equipment at least comprises a sliding frame (4), coating heads (1) and electrode steel wires (2), and is characterized in that a plurality of coating heads (1) are fixed on the sliding frame (4), the plurality of electrode steel wires (2) are erected above the sliding frame (4) in a mode that two ends of the electrode steel wires are fixedly connected to a machine table (3), a single electrode steel wire (2) corresponds to the position of the single coating head (1) on the sliding frame (4), and the electrode steel wires (2) are wound into ropes by a plurality of strands of steel wires;
the carriage (4) can move along the length extending direction of the electrode steel wires (2) with the at least two coating heads (1), and liquid (5) to be coated in the inner cavity of the coating heads (1) can be coated on at least one corresponding electrode steel wire (2) on the electrostatic spinning equipment in the moving process;
the coating head (1) is used for realizing the coating process in a mode of mutually assembling and matching with a first cylinder component (9) and a second cylinder component (12), a liquid supply hole (6) and a mounting hole (7) which are mutually crossed and penetrated are formed in the coating head (1), the first cylinder component (9) is slidingly connected in the mounting hole (7) in a form-fit mode, a semi-open bearing channel (10) is formed in the outer wall of the first cylinder component (9), the bearing channel (10) is used for slidingly connecting the second cylinder component (12), the bearing channel (10) is formed in a mode that the first cylinder component (9) is crossed with a cylindrical cutting body with the central axis of the first cylinder component (9) and the central axis of the first cylinder component (9) are mutually parallel, a steel wire guide groove (11) is formed in the inner wall of the bearing channel (10), and the steel wire guide groove (11) is used for guiding the electrode steel wire (2);
a liquid supply interface (13) is formed in the radial direction of the first cylinder member (9), the liquid supply interface (13) is communicated with the steel wire guide groove (11) in an orthogonal manner, and when the first cylinder member (9) is assembled on the coating head (1), the liquid supply interface (13) is communicated with the liquid supply hole (6);
a groove (15) is formed in the outer wall of the second cylindrical member (12), the groove (15) is formed by the way that the second cylindrical member (12) intersects with a cylindrical cutting body with the central axis of the second cylindrical member (12) and the central axis of the second cylindrical member being different from each other, the groove (15) is used for guiding the liquid (5) to be coated entering through a liquid supply hole to an inner cavity of the bearing channel (10) communicated with the steel wire guide groove (11);
after the second cylindrical member (12) is installed, the groove (15) is located above the wire guide groove (11), the groove (15) and the liquid supply interface (13) are at least partially overlapped and mutually communicated, and when the electrode wire (2) moves in the wire guide groove (11), the liquid (5) to be coated is provided for the electrode wire (2) through the groove (15);
the first cylinder member (9) is detachably mounted in a coating head (1), the coating head (1) coats a liquid (5) to be coated on an electrode wire (2), and the electrode wire (2) is limited on the first cylinder member (9);
the liquid feeding mode of the coating heads (1) is a cascade liquid feeding mode, namely, each two coating heads (1) are used as a liquid feeding unit, the liquid feeding units are respectively communicated with a plurality of liquid feeding units from a liquid storage tank arranged outside, liquid (5) to be coated is simultaneously provided for the two coating heads (1) by a single liquid feeding unit,
for the electrode wire (2) which is viscous-suspended with an excessive part of liquid due to gravity, when passing through the open end face of the first column member (9), the excessive part of liquid is scraped off, and the scraped off part of liquid falls down through the leak hole (16) and falls into the collection tank (17) which is placed in advance.
2. An electrospinning apparatus according to claim 1, wherein the carriage (4) is provided with a collecting tank (17) at the bottom for collecting the liquid (5) to be coated that overflows when the electrode wire (2) moves through the coating head (1).
3. The electrostatic spinning device according to claim 2, characterized in that at least one leak hole (16) is formed in pairs on the carriage (4), the leak holes (16) are positioned at two ends of the coating head (1) through which the electrode steel wires (2) penetrate, and the collecting tank (17) is positioned below the leak holes (16).
4. An electrospinning apparatus according to claim 3, wherein the carriage (4) is capable of reciprocating along the length extension of the electrode wire (2) simultaneously with a plurality of the coating heads (1) under external drive; after spinning jet, the coating liquid on the electrode wire (2) is reduced, and the coating head (1) continuously supplements the coating under the reciprocating motion of the sliding frame (4).
5. The electrospinning apparatus according to claim 4, wherein the coating head (1) on the longitudinal end of the carriage (4) is in communication with an external reservoir; a plug is arranged on the outer side of the coating head (1) positioned on the other end part of the longitudinal direction of the carriage (4).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210443447.0A CN114892283B (en) | 2020-04-13 | 2020-11-09 | Sliding frame for electrostatic spinning equipment |
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| CN2020205392791 | 2020-04-13 | ||
| CN202020539279 | 2020-04-13 | ||
| CN202210443447.0A CN114892283B (en) | 2020-04-13 | 2020-11-09 | Sliding frame for electrostatic spinning equipment |
| CN202011244188.6A CN112376118B (en) | 2020-04-13 | 2020-11-09 | Electrostatic spinning equipment |
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| CN202011244188.6A Division CN112376118B (en) | 2020-04-13 | 2020-11-09 | Electrostatic spinning equipment |
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| CN114892283B true CN114892283B (en) | 2023-10-31 |
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| CN202022575922.9U Active CN214142626U (en) | 2020-04-13 | 2020-11-09 | Electrostatic spinning equipment |
| CN202210443447.0A Active CN114892283B (en) | 2020-04-13 | 2020-11-09 | Sliding frame for electrostatic spinning equipment |
| CN202210447374.2A Active CN114990707B (en) | 2020-04-13 | 2020-11-09 | Column member for electrostatic spinning |
| CN202011244188.6A Active CN112376118B (en) | 2020-04-13 | 2020-11-09 | Electrostatic spinning equipment |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN112376118B (en) | 2022-05-10 |
| CN214142626U (en) | 2021-09-07 |
| CN114990707B (en) | 2023-10-31 |
| CN214142625U (en) | 2021-09-07 |
| CN114990707A (en) | 2022-09-02 |
| CN114892283A (en) | 2022-08-12 |
| CN112376118A (en) | 2021-02-19 |
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