CN214032767U

CN214032767U - Matrix type multi-needle electrostatic spinning equipment

Info

Publication number: CN214032767U
Application number: CN202022414370.3U
Authority: CN
Inventors: 杨永生; 琚河同; 李小要
Original assignee: Henan Manborui New Material Technology Co ltd
Current assignee: Henan Manborui New Material Technology Co ltd
Priority date: 2020-10-27
Filing date: 2020-10-27
Publication date: 2021-08-24
Anticipated expiration: 2030-10-27

Abstract

The utility model discloses a matrix type multi-needle electrostatic spinning device, which comprises an electrospinning chamber, a feeding mechanism and a receiving mechanism which are arranged outside one side of the electrospinning chamber, and a transmission mechanism and a spinning mechanism which are arranged in the electrospinning chamber; the conveying mechanism comprises a driving roller, a driven roller and a steel belt sleeved between the driving roller and the driven roller, wherein the movable end of the base material non-woven fabric on the feeding roller passes through the material passing channel, then bypasses the driven roller along the lower surface of the steel belt, then comes out from the upper part of the material passing channel and is wound on the material receiving roller; and a spinning mechanism is arranged below the steel belt close to one side of the driving roller and is used for spraying the electrostatic spinning raw material on the surface of the base material non-woven fabric to form a nanofiber membrane layer. The utility model discloses collect the feeding, spout a silk, dry, receive the material as an organic whole, formed an integration, can continuous production's large-scale electrostatic spinning equipment, its transport mechanism is more stable, spouts a silk more evenly, and degree of automation and production efficiency are higher.

Description

Matrix type multi-needle electrostatic spinning equipment

Technical Field

The utility model relates to an electrostatic spinning technical field, concretely relates to matrix many syringe needles electrostatic spinning equipment.

Background

Electrospinning is a special fiber manufacturing process, which is a technique that subjects a polymer solution or melt to jet spinning in a strong electric field. Under the action of the electric field, the liquid drop at the spray head changes from a spherical shape to a conical shape, and fiber filaments are obtained by extending from the tip of the conical shape, so that polymer filaments with nanometer-scale diameters can be produced. The existing electrostatic spinning generally adopts relatively small equipment, the working efficiency is relatively low, large-scale continuous production cannot be realized, the requirements on a mechanism for conveying a base material are higher for some technologies which need to form an electrostatic spinning fiber membrane on the surface of the base material, and the quality and the production efficiency of products can be ensured by realizing the continuity and the stability of base material conveying. At electrostatic spinning in-process, need use mobile device to drive shower nozzle reciprocating motion, realize spouting the silk to the substrate surface, current mobile device drives a shower nozzle usually and removes, and used shower nozzle bore is great, and though the volume of spouting of shower nozzle is great, nevertheless spouts the silk efficiency not high, but causes easily to spout inhomogeneous phenomenon.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide a matrix multi-needle electrostatic spinning equipment, can realize the continuous, stable production of nanofiber membrane, guarantee the quality of electrostatic spinning product, improve production efficiency.

In order to solve the technical problem, the utility model adopts the following technical scheme:

designing matrix type multi-needle electrostatic spinning equipment, which comprises an electrospinning chamber, a feeding mechanism and a receiving mechanism which are arranged outside one side of the electrospinning chamber, and a transmission mechanism and a spinning mechanism which are arranged in the electrospinning chamber;

the feeding mechanism comprises a feeding roller for mounting a substrate non-woven fabric winding drum, the receiving mechanism comprises a receiving roller for winding finished products, and one end of the receiving roller is connected with a receiving motor for driving the receiving roller to rotate;

the conveying mechanism comprises a driving roller, a driven roller and a steel belt sleeved between the driving roller and the driven roller, wherein a driving motor is arranged at one end of the driving roller, and the output end of the driving motor is coaxially connected with the driving roller and is used for driving the driving roller to rotate so as to drive the steel belt to circularly move along the driving roller and the driven roller;

a material passing channel is formed in the side wall of the electrospinning chamber, which corresponds to the side where the driving roller is located, the movable end of the base material non-woven fabric on the feeding roller passes through the material passing channel, then bypasses the driven roller along the lower surface of the steel belt, then comes out from the upper part of the material passing channel and is wound on the material receiving roller; a spinning mechanism is arranged below the steel belt close to one side of the driving roller and is used for spraying the electrostatic spinning raw material on the surface of the base material non-woven fabric to form a nano fiber film layer;

the spinning mechanism comprises a linear motor module, a tray fixedly arranged on a sliding block of the linear motor module, and a needle head module arranged on the tray; the tray is driven by the linear motor module to reciprocate along the guide rail;

the needle head module comprises a base made of conductive metal, more than one feed inlet is formed in one end of the base, feed channels communicated with the feed inlets in a one-to-one correspondence mode are formed in the base along the length direction of the base, more than two equally-arranged discharge outlets are formed in the top of the base along the length direction of each feed channel and communicated with the corresponding feed channels, a spinneret needle head is mounted at each discharge outlet, and the feed inlets are connected with a micro-injection pump through feed pipelines;

a side face of the base is provided with a through groove along the length direction, connecting holes which are arranged at equal intervals are formed in the bottom face of the through groove, a conductive bolt is installed in each connecting hole, the conductive bolt located at one end of the conductive bolt is correspondingly connected with the high-voltage electrostatic generator through an electric wire, and adjacent conductive bolts are electrically connected through a wire.

In the technical scheme, a non-woven fabric winding drum as a base material is installed on a feeding roller, the movable end of the non-woven fabric penetrates through a material passing channel of an electrospinning chamber and is attached to the lower side surface of a steel belt, then the non-woven fabric winding drum bypasses a driven roller and comes out from the upper portion of the material passing channel along the upper side surface of the steel belt and is wound on a material receiving roller, when the non-woven fabric winding drum works, the driving roller is driven by a driving motor to rotate to drive the driven roller to rotate, so that the steel belt circularly moves between the driving roller and the driven roller, the non-woven fabric is driven to move, meanwhile, a spinning mechanism below the steel belt is started, an electrostatic spinning raw material is sprayed on the non-woven fabric on the lower side of the steel belt, a layer of nano fiber film is formed on the lower side surface of the non-woven fabric, the formed finished material is sent out of the electrospinning chamber along with the movement of the steel belt, the material receiving roller is driven by a motor in hand to rotate, and the finished material is wound.

The spinning mechanism drives the tray to reciprocate along the guide rail through the linear motor module, and the needle head modules are arranged in the tray, so that multiple groups of needle heads can simultaneously spin, the spinning efficiency is higher, and the spinning is more uniform; the raw materials that drop at spinning in-process are caught by the tray, can not drop inside the room of electrospinning, are convenient for clear up more. The syringe needle module can adopt the base of cuboid or square shape, sets up the multiunit and be the spinneret syringe needle that the matrix was arranged on the base, and the raw materials passes through feed line, feed inlet, feedstock channel and flows to syringe needle department, and the base of electrically conductive material corresponds with high-voltage electrostatic generator and is connected for the raw materials passes through syringe needle department and forms the fibre filament, and the filament is sprayed on substrate (like the non-woven fabrics) surface, realizes the nanofiber membrane that electrostatic spinning formed from this.

Preferably, the feeding pipeline comprises a feeding main pipe connected with the micro-injection pump through a material pipe, and feeding branch pipes connected between each feeding hole and the feeding main pipe, and each feeding branch pipe is provided with a rotary switch; the micro-injection pump is communicated to a charging basket containing electrostatic spinning raw materials through a material pipe. Through setting up the feeding and being responsible for and feeding branch pipe, set up rotary switch on feeding branch pipe, can control whether every feedstock channel feeds, whether the spinning is spouted to every group syringe needle of selective as required control.

Preferably, an inner counter bore is arranged at the discharge port, internal threads are arranged on the side wall of the inner counter bore, and the lower part of the spinning needle is in threaded connection with the inner counter bore through a needle head seat; and a sealing washer is arranged at the contact position of the inner counter bore and the bottom surface of the needle head seat.

Preferably, a cushion block is fixedly arranged on the tray, and a base of the needle head module is fixed on the cushion block; the cushion block is made of an insulated bakelite material; the base is made of stainless steel.

Preferably, an upper tensioning mechanism and a lower tensioning mechanism are further arranged in the electrospinning chamber, the upper tensioning mechanism and the lower tensioning mechanism respectively comprise pull rods vertically fixed on two sides of the top wall of the electrospinning chamber, a tensioning roller is mounted between the two pull rods, and the tensioning roller of the upper tensioning mechanism penetrates through the space between the upper steel belt and the lower steel belt and is in fit contact with the inner side surface of the upper steel belt; the tensioning roller of the lower tensioning mechanism penetrates through the space between the upper steel belt and the lower steel belt and is in contact with the inner side surface of the lower steel belt in an attaching manner; the upper tensioning mechanism and the lower tensioning mechanism are two groups.

Through setting up upper and lower straining device, can carry out the tensioning to the upper and lower both sides of steel band, guarantee that the steel band can drive the stable removal of substrate non-woven fabrics.

Preferably, an external tensioning mechanism is further arranged outside the electrospinning chamber, the external tensioning mechanism comprises vertical supporting rods on two sides, and a discharging tensioning roller and a feeding tensioning roller which are vertically and parallelly arranged between the supporting rods, and the feeding tensioning roller is positioned between the feeding roller and the material passing channel and is in abutting contact with the bottom surface of the base material non-woven fabric; and the discharging tension roller is positioned between the material receiving roller and the material passing channel and is tightly contacted with the bottom surface of the finished product material.

Through setting up outside straining device, feeding tensioning roller can carry out the tensioning to the substrate non-woven fabrics between feeding roller and the drive roll, and ejection of compact tensioning roller can carry out the tensioning to the drive roll and receive the finished product material between the material roller, can the substrate with finished product material feeding with receive the stable removal when expecting.

Preferably, the bracing piece is hollow structure, has seted up vertical inserting groove in the inboard of two bracing pieces, the center pin both ends of feeding tensioning roller and ejection of compact tensioning roller pass respectively the inserting groove is pegged graft on the bracing piece of both sides, sets up the fixed orifices that the equidistance distributes on the lateral wall of bracing piece wear to be equipped with fastening bolt in the fixed orifices for the center pin of fixed stay feeding tensioning roller and ejection of compact tensioning roller.

The height positions of the feeding tension roller and the discharging tension roller on the supporting rod can be adjusted by the external tensioning mechanism through arranging the vertical insertion groove and the plurality of fixing holes, so that the requirements of the feeding roller and the receiving roller on the tensioning degree under different conditions are met.

Preferably, a hot air pipeline is laid at the position, located on the rear side of the spinning mechanism, on the bottom surface of the electrospinning chamber, and comprises a hot air main pipe connected with an external hot air blower and more than one hot air branch pipe communicated with the hot air main pipe, and radiating holes distributed at equal intervals are formed in the hot air branch pipes.

Through setting up hot-blast line, can spout the nanofiber rete that the silk formed to the substrate surface and dry, make the fiber rete can rapid prototyping, the finished product material that comes out from the room of electrospinning can directly carry out the rolling, avoids causing damage, drop, adhesion scheduling problem because the fiber membrane is not dry in transmission process.

Preferably, an air outlet is formed in the top of the electrospinning chamber, and an exhaust fan is installed at the air outlet. The air outlet and the exhaust fan are arranged at the top of the electrospinning chamber, so that hot air at the bottom of the electrospinning chamber can be driven to flow upwards, the temperature in the electrospinning chamber is more uniform, and the drying effect is good; when the temperature or the humidity of the electrospinning chamber reaches a certain degree, air can be exhausted to ensure that the temperature and the humidity in the electrospinning chamber meet the working requirements of equipment.

The beneficial effects of the utility model reside in that:

the utility model discloses matrix many syringe needles electrostatic spinning equipment has improved electrostatic spinning's production efficiency and production scale by a wide margin, can realize the serialization production of nanofiber membrane, is favorable to establishing the large-scale production line of nanofiber membrane. The utility model discloses the nanofiber rete of producing, the mode that adopts electrostatic spinning combines together with non-woven fabrics, the fiber diameter of nanofiber rete is thinner, the aperture is littleer, fibre wherein is unordered, random distribution, make have bigger specific surface area and higher porosity, physical filtration ability is stronger than melt-blown cloth, because it is electrostatic spinning and makes, it has good electrostatic adsorption filterable ability simultaneously, make this nanofiber membrane have physical filtration and electrostatic adsorption filterable function concurrently, be one kind and can be applied to the gauze mask, protective clothing, the raw materials in the filtration products such as filter core, its filter effect is good, the gas permeability is good, it is more frivolous, and the cost is lower. Adopt the utility model provides an equipment can realize the volume production of nanofiber membrane, can guarantee as the supply of middle raw and other materials.

Through setting up feed mechanism, receiving agencies and transmission device, can drive the continuous, stable conveying of substrate non-woven fabrics, accomplish electrostatic spinning in the data send process, form the nanofiber membrane on substrate non-woven fabrics surface, transport mechanism can guarantee the stable continuous transport of substrate and finished product material, is very necessary to the large-scale electrostatic spinning production facility of establishing serialization production, is favorable to improving production efficiency, guarantees product quality.

The spinning mechanism drives the tray to reciprocate through the linear motor module, and a modular needle device is arranged in the tray, so that multiple groups of needles can be used for spinning simultaneously; raw materials falling in the spinning process can be caught by the tray, so that the raw materials are prevented from falling into the electrospinning chamber, and the cleaning is more convenient. The modular needle head device is adopted, so that the simultaneous spinning of a plurality of groups of needle heads can be realized, the uniformity of the spinning can be ensured, and the problem that the existing electrostatic spinning uses a single nozzle to easily cause uneven spinning is solved; the inner diameter of the spinning needle head adopted can be far smaller than that of an independent spray head used in the existing electrostatic spinning, the fineness of fibers can be further reduced, the density of the fibers can be increased while the uniformity of spinning is ensured, and the product quality of the nanofiber membrane is improved. When the needle head module is used, all needle heads can be used for spraying threads at the same time, the opening and closing of each group of needle heads can be controlled through a rotary button on the branch pipe, and which groups of needle heads are selected to be opened according to needs, so that the thickness and the density of the nanofiber membrane are adjusted.

Drawings

FIG. 1 is a schematic structural diagram of the matrix type multi-needle electrostatic spinning device of the present invention;

FIG. 2 is a schematic top view of the spinning mechanism;

FIG. 3 is a schematic side view of the spinning mechanism;

FIG. 4 is a schematic view of the construction of the needle module;

FIG. 5 is a side view of the needle module;

FIG. 6 is a cross-sectional view of the needle module;

FIG. 7 is a schematic view of the structure of a drive roller, a driven roller and a steel belt;

FIG. 8 is a schematic structural view of the upper tensioning mechanism;

FIG. 9 is a schematic structural view of an external tensioning mechanism;

FIG. 10 is a schematic view of the mounting of the support rod and the central shaft;

FIG. 11 is a schematic view of a hot air duct.

Reference numbers in the figures: 1, an electrospinning chamber, 2, a feeding roller, 3, a material receiving roller, 4, a driving roller, 5, a driven roller, 6, a steel belt, 7, a driving motor, 8, a material passing channel, 9, base material non-woven fabrics, 10, a spinning mechanism, 11, finished materials, 12 upper tensioning mechanisms, 13 lower tensioning mechanisms, 14 pull rods, 15 tensioning rollers, 16 external tensioning mechanisms, 17 support rods, 18 discharging tensioning rollers, 19 feeding tensioning rollers, 20 inserting grooves, 21 central shafts, 22 fixing holes and 23 fastening bolts; 24 hot air main pipes, 25 hot air branch pipes and 26 heat dissipation holes; 27 air outlet;

28 linear motor modules, 29 guide rails, 30 sliding blocks, 31 cushion blocks and 32 trays; 33 base, 34 feed inlet, 35 material pipe, 36 feed channel, 37 discharge outlet, 38 spinning needle, 39 needle seat, 40 through groove, 41 conductive bolt, 42 electric wire, 43 lead, 44 feed main pipe, 45 feed branch pipe and 46 rotary switch.

Detailed Description

The following examples are provided to illustrate the present invention in detail and should not be construed as limiting the scope of the present invention in any way. The apparatus elements referred to in the following examples are, unless otherwise specified, conventional apparatus elements; the industrial raw materials are all conventional industrial raw materials which are sold on the market, if not specifically mentioned.

Example 1: a matrix type multi-needle electrostatic spinning device is shown in figure 1 and comprises an electrospinning chamber 1, a feeding mechanism and a receiving mechanism which are arranged outside one side of the electrospinning chamber 1, and a transmission mechanism and a spinning mechanism 10 which are arranged in the electrospinning chamber 1.

Feed mechanism is including the feed roll 2 that is used for installing 9 reels of substrate non-woven fabrics, and receiving agencies is connected with the receipts material motor including the receipts material roller 3 that is used for rolling finished product material in the one end of receiving material roller 3 for drive receives material roller 3 and rotates.

The transmission mechanism comprises a driving roller 4, a driven roller 5 and a steel belt 6 sleeved between the driving roller 4 and the driven roller 5, a driving motor 7 is arranged at one end of the driving roller 4, the output end of the driving motor 7 is coaxially connected with the driving roller 4 and is used for driving the driving roller 4 to rotate, and further driving the steel belt 6 to circularly move along the driving roller 4 and the driven roller 5, and the reference is made to fig. 7.

A material passing channel 8 is formed in the side wall of the electrospinning chamber 1 corresponding to the side where the driving roller 2 is located, and the movable end of a base material non-woven fabric 9 on the feeding roller 2 passes through the material passing channel 8, then bypasses the driven roller 5 along the lower surface of the steel belt 6, then comes out from the upper part of the material passing channel 8 and is wound on the material receiving roller 3; a spinning mechanism 10 is arranged below the steel belt 6 close to one side of the driving roller 4 and is used for spraying the electrostatic spinning raw material on the surface of the base material non-woven fabric 9 to form a nano fiber film layer.

The spinning mechanism comprises a linear motor module 28, a tray 32 fixedly arranged on a slide block 30 of the linear motor module, and a needle head module arranged on the tray 32; the tray 32 is driven by the linear motor module 28 to reciprocate along the guide rail 29; see fig. 2, 3. The linear motor module 28 can be implemented by selecting existing equipment components according to the required moving stroke and moving speed, and the structures, arrangement modes and driving modes of the motor, the guide rail and the sliding block are not described herein again.

The structure of the needle head module is shown in fig. 4, 5 and 6, and comprises a base 33 made of conductive metal, wherein one end of the base 33 is provided with more than one feed inlet 34, the inside of the base 33 is provided with feed channels 36 communicated with the feed inlets 34 in a one-to-one correspondence manner along the length direction of the base, the top of the base 33 is provided with more than two discharge outlets 37 arranged at equal intervals along the length direction of each feed channel 36, the discharge outlets 37 are communicated with the corresponding feed channels 36, each discharge outlet 37 is provided with a spinning needle head 38, the discharge outlet 37 is provided with an inner counterbore, the side wall of the inner counterbore is provided with internal threads, and the lower part of the spinning needle head 38 is in threaded connection with the inner counterbore through a needle head seat 39; a sealing washer is arranged at the contact position of the inner counter bore and the bottom surface of the needle head seat 39; the feed port 34 is connected to the micro-syringe pump through a feed line. A through groove 40 is formed in one side face of the base 33 along the length direction of the base, connecting holes are formed in the bottom face of the through groove 40 and are arranged at equal intervals, a conductive bolt 41 is installed in each connecting hole, the conductive bolt located at one end of the conductive bolt is correspondingly connected with the high-voltage electrostatic generator through an electric wire 42, and adjacent conductive bolts are electrically connected through a conducting wire 43. A cushion block 31 is fixedly arranged on the tray 32, and the base of the needle head module is fixed on the cushion block 31; the cushion block 31 is made of an insulated bakelite material; the base 33 is made of stainless steel.

Example 2: the matrix type multi-needle electrostatic spinning equipment is different from the matrix type multi-needle electrostatic spinning equipment in embodiment 1 in that an upper tensioning mechanism 12 and a lower tensioning mechanism 13 are further arranged in an electrospinning chamber, the upper tensioning mechanism 12 and the lower tensioning mechanism 13 respectively comprise pull rods 14 vertically fixed on two sides of the top wall of the electrospinning chamber, and a tensioning roller 15 is arranged between the two pull rods 14, and the drawing is shown in fig. 8. A tension roller of the upper tension mechanism 12 passes through between the upper steel belt and the lower steel belt and is in contact with the inner side surface of the upper steel belt; a tension roller of the lower tension mechanism 13 passes through between the upper steel belt and the lower steel belt and is in contact with the inner side surface of the lower steel belt; the upper tensioning mechanism 12 and the lower tensioning mechanism 13 are both two sets.

An external tensioning mechanism 16 is also arranged outside the electrospinning chamber, the external tensioning mechanism 16 comprises vertical supporting rods 17 at two sides, a discharging tensioning roller 18 and a feeding tensioning roller 19 which are arranged between the supporting rods 17 in an up-down parallel manner, and the feeding tensioning roller 19 is positioned between the feeding roller 2 and the material passing channel 8 and is in abutting contact with the bottom surface of the base material non-woven fabric 9; the discharging tension roller 18 is positioned between the receiving roller 3 and the material passing channel 8 and is in abutting contact with the bottom surface of the finished material 11.

The bracing piece 17 is hollow structure, has seted up vertical inserting groove 20 in two bracing pieces 17's inboard, and the center pin 21 both ends of feeding tensioning roller and ejection of compact tensioning roller pass inserting groove 20 respectively and peg graft on the bracing piece 17 of both sides, set up the fixed orifices 22 that the equidistance distributes on the lateral wall of bracing piece 17, wear to be equipped with fastening bolt 23 in fixed orifices 22 for the center pin 21 of fixed stay feeding tensioning roller and ejection of compact tensioning roller.

Example 3: a matrix type multi-needle electrostatic spinning device is different from the embodiment 2 in that a hot air pipeline is laid at the position, located on the rear side of a spinning mechanism, of the bottom surface of an electrospinning chamber 1, the hot air pipeline comprises a hot air main pipe 24 connected with an external hot air fan and more than one hot air branch pipe 25 communicated with the hot air main pipe 24, 3 hot air branch pipes are arranged in the embodiment, and radiating holes 26 distributed at equal intervals are formed in the hot air branch pipes 25. An air outlet 27 is arranged at the top of the electrospinning chamber 1, and an exhaust fan is arranged at the air outlet 27.

The utility model discloses matrix many syringe needles electrostatic spinning equipment's working method does: firstly, a winding drum of the base material non-woven fabric is arranged on a feeding roller, so that the movable end of the base material non-woven fabric passes through a material passing channel to enter an electrospinning chamber and is attached to the lower side surface of a steel belt, and then the base material non-woven fabric bypasses a driven roller, comes out of the material passing channel along the upper side surface of the steel belt and is wound on a material receiving roller; the substrate nonwoven fabric can be attached to the surface of the steel strip in an electrostatic adsorption manner (the electrostatic adsorption manner can be realized by adopting the prior art and is not described herein any more). When the electrostatic spinning device works, the driving motor drives the driving roller to rotate, the driving roller drives the steel belt and the driven roller to rotate, meanwhile, the spinning mechanism at the lower part is started to spray the electrostatic spinning raw materials on the lower side surface of the base material non-woven fabric to form a nanofiber membrane, the spinning mechanism drives the tray to reciprocate through the linear motor module, and the needle head module in the tray performs spinning on the surface of the base material. The feeding pipeline of the needle head module is connected with a micro-injection pump, the micro-injection pump is communicated into the charging barrel, high-voltage static electricity is applied to the base through a high-voltage static electricity generator, the needle head module is driven to reciprocate through the linear motor module, the surface of the base material non-woven fabric attached to the steel strip from the top is sprayed, and a nano-fiber film is formed on the surface of the base material. Wherein, the multiunit syringe needle that is the matrix arrangement spouts the silk simultaneously, and the fibre that forms is thinner, denser, has solved current electrostatic spinning shower nozzle and has produced easily and spout inhomogeneous, the not enough problem of fibre fineness of silk. And whether each group of needles is opened or not can be controlled by a rotary switch, and a plurality of groups of needles are selected to be used for spinning simultaneously or a plurality of groups of needles are selected to be used for spinning so as to adapt to the requirements of different thicknesses and densities of the nanofiber membrane and form the nanofiber membrane with different thicknesses and densities.

Raw materials falling in the spinning process fall on the tray and cannot fall inside the electrospinning chamber, so that the spinning chamber is convenient to clean. The upper tensioning mechanism and the lower tensioning mechanism are arranged in the electrospinning chamber, so that the stable movement of the steel belt can be ensured; an external tensioning mechanism is arranged outside the electrospinning chamber, so that the stable movement of the base material non-woven fabric and finished material can be ensured. The hot air pipeline arranged in the electrospinning chamber can play a role in heating and drying, so that the rapid film forming and drying forming of the nano-fibers after spinning are facilitated, the subsequent finished materials can be directly rolled conveniently, and the nano-fiber film is prevented from being adhered, falling off or damaged.

The utility model discloses matrix multi-needle electrostatic spinning equipment collect the feeding, spout a silk, dry, receive the material as an organic whole, formed an integration, can continuous production's large-scale electrostatic spinning equipment, its transport mechanism is more stable, spouts the silk more evenly, and degree of automation and production efficiency are higher.

The present invention has been described in detail with reference to the embodiments, but those skilled in the art will understand that the specific parameters in the embodiments can be changed without departing from the spirit of the present invention to form a plurality of specific embodiments, which are the common variation range of the present invention, and the detailed description is omitted here.

Claims

1. The matrix type multi-needle electrostatic spinning equipment is characterized by comprising an electrospinning chamber (1), a feeding mechanism and a receiving mechanism which are arranged outside one side of the electrospinning chamber (1), and a transmission mechanism and a spinning mechanism (10) which are arranged in the electrospinning chamber (1);

the feeding mechanism comprises a feeding roller (2) for mounting a substrate non-woven fabric winding drum, the receiving mechanism comprises a receiving roller (3) for winding finished products, and one end of the receiving roller (3) is connected with a receiving motor for driving the receiving roller (3) to rotate;

the conveying mechanism comprises a driving roller (4), a driven roller (5) and a steel belt (6) sleeved between the driving roller (4) and the driven roller (5), a driving motor is arranged at one end of the driving roller (4), and the output end of the driving motor is coaxially connected with the driving roller (4) and is used for driving the driving roller (4) to rotate so as to drive the steel belt (6) to circularly move along the driving roller (4) and the driven roller (5);

a material passing channel (8) is formed in the side wall of the electrospinning chamber (1) corresponding to the side where the driving roller (4) is located, the movable end of a base material non-woven fabric (9) on the feeding roller (2) passes through the material passing channel (8), then bypasses the driven roller (5) along the lower surface of the steel belt (6), then comes out from the upper part of the material passing channel (8) and is wound on the material receiving roller (3); a spinning mechanism (10) is arranged below the steel belt (6) close to one side of the driving roller (4) and is used for spraying the electrostatic spinning raw material on the surface of the base material non-woven fabric (9) to form a nano fiber film layer;

the spinning mechanism (10) comprises a linear motor module (28), a tray (32) fixedly arranged on a sliding block (30) of the linear motor module, and a needle head module arranged on the tray (32); the tray (32) is driven by the linear motor module (28) to reciprocate along the guide rail (29);

the needle head module comprises a base (33) made of conductive metal, more than one feed inlet (34) is formed in one end of the base (33), feed channels (36) communicated with the feed inlets (34) in a one-to-one correspondence mode are formed in the base (33) along the length direction of the base, more than two equally-arranged discharge outlets (37) are formed in the top of the base (33) along the length direction of each feed channel (36), the discharge outlets (37) are communicated with the corresponding feed channels (36), a spinning needle head (38) is installed at each discharge outlet (37), and the feed inlets (34) are connected with a micro-injection pump through feed pipelines;

a side of the base (33) is provided with a through groove (40) along the length direction, connecting holes which are arranged at equal intervals are formed in the bottom surface of the through groove (40), a conductive bolt (41) is installed in each connecting hole, the conductive bolt (41) located at one end is correspondingly connected with a high-voltage electrostatic generator through an electric wire, and adjacent conductive bolts (41) are electrically connected through a wire.

2. The matrix-type multi-needle electrospinning device according to claim 1, wherein the feeding line comprises a main feeding pipe (44) connected to the micro-injection pump through a feeding pipe (35), and a branch feeding pipe (45) connected between each feeding port (34) and the main feeding pipe (44), and a rotary switch (46) is provided on each branch feeding pipe (45); the micro-injection pump is communicated to a charging basket containing electrostatic spinning raw materials through a material pipe.

3. The matrix type multi-needle electrostatic spinning device according to claim 1, characterized in that an inner counter bore is arranged at the discharge port (37), an inner thread is arranged on the side wall of the inner counter bore, and the lower part of the spinning needle (38) is connected in the inner counter bore through a needle seat (39) in a threaded manner; and a sealing gasket is arranged at the position where the inner counter bore is contacted with the bottom surface of the needle head seat (39).

4. The matrix type multi-needle electrospinning device according to claim 1, wherein a cushion block (31) is fixedly arranged on the tray (32), and a base (33) of the needle module is fixed on the cushion block (31); the cushion block (31) is made of an insulated bakelite material; the base (33) is made of stainless steel.

5. The matrix type multi-needle electrostatic spinning device according to claim 1, characterized in that an upper tensioning mechanism (12) and a lower tensioning mechanism (13) are further arranged in the electrospinning chamber (1), each of the upper tensioning mechanism (12) and the lower tensioning mechanism (13) comprises a pull rod (14) vertically fixed on two sides of the top wall of the electrospinning chamber (1), a tensioning roller (15) is installed between the two pull rods, and the tensioning roller of the upper tensioning mechanism (12) passes through between the upper steel belt and the lower steel belt and is in fit contact with the inner side surface of the upper steel belt; a tension roller of the lower tensioning mechanism (13) penetrates through the space between the upper steel belt and the lower steel belt and is in contact with the inner side surface of the lower steel belt; the upper tensioning mechanism (12) and the lower tensioning mechanism (13) are respectively two groups.

6. The matrix type multi-needle electrostatic spinning device according to claim 5, characterized in that an external tensioning mechanism (16) is arranged outside the electrospinning chamber (1), the external tensioning mechanism (16) comprises vertical support rods (17) at two sides, a discharging tensioning roller (18) and a feeding tensioning roller (19) which are arranged between the support rods (17) in parallel up and down, and the feeding tensioning roller (19) is positioned between the feeding roller (2) and the material passing channel (8) and is in abutting contact with the bottom surface of the base material non-woven fabric (9); and the discharging tension roller (18) is positioned between the material receiving roller (3) and the material passing channel (8) and is tightly contacted with the bottom surface of the finished product material (11).

7. The matrix type multi-needle electrostatic spinning device according to claim 6, wherein the support rods (17) are hollow, vertical insertion grooves (20) are formed in the inner sides of the two support rods (17), two ends of the central shaft (21) of the feeding tension roller and the discharging tension roller respectively penetrate through the insertion grooves (20) to be inserted into the support rods (17) on two sides, fixing holes (22) are formed in the side walls of the support rods (17) and are distributed equidistantly, and fastening bolts (23) are arranged in the fixing holes (22) in a penetrating manner and used for fixedly supporting the central shafts (21) of the feeding tension roller and the discharging tension roller.

8. The matrix type multi-needle electrostatic spinning device according to claim 1, wherein a hot air pipeline is laid on the bottom surface of the electrospinning chamber (1) at the rear side of the spinning mechanism, the hot air pipeline comprises a main hot air pipe (24) connected with an external hot air blower, and more than one branch hot air pipes (25) communicated with the main hot air pipe (24), and the branch hot air pipes (25) are provided with heat dissipation holes (26) distributed at equal intervals.

9. The matrix type multi-needle electrospinning device according to claim 1, wherein an air outlet (27) is opened at the top of the electrospinning chamber (1), and an exhaust fan is installed at the air outlet (27).