阅读说明：本技术 用于均匀生产纳米纤维膜的旋转式纺丝模组 (Rotary spinning module for uniformly producing nanofiber membrane ) 是由 董祥 于 2021-07-09 设计创作，主要内容包括：本发明公开了一种用于均匀生产纳米纤维膜的旋转式纺丝模组,包括模组底座、旋转机构、针式纺丝单元以及动力机构；旋转机构设置于模组底座上,其包括环形导轨以及由一主动轮、一从动轮和同步皮带组成的同步带机构；环形导轨上可滑动地设置有多个滑块,滑块连接于同步皮带上,每个滑块上均固定连接有纺丝单元安装板；针式纺丝单元安装于纺丝单元安装板上,其包括溶液仓以及针头安装底板；溶液仓的侧面上设有纺丝溶液接头和高压静电接线柱,针头安装底板安装于所述溶液仓的上侧,且针头安装底板上安装有多个纺丝针头；动力机构安装于模组底座上,用于带动所述主动轮旋转。本发明的旋转式纺丝模组,能够高效率地生产膜面网面均匀的静电纺纳米纤维材料。(The invention discloses a rotary spinning module for uniformly producing a nanofiber membrane, which comprises a module base, a rotating mechanism, a needle type spinning unit and a power mechanism, wherein the rotating mechanism is arranged on the module base; the rotating mechanism is arranged on the module base and comprises an annular guide rail and a synchronous belt mechanism consisting of a driving wheel, a driven wheel and a synchronous belt; a plurality of sliding blocks are arranged on the annular guide rail in a sliding manner, the sliding blocks are connected to the synchronous belt, and each sliding block is fixedly connected with a spinning unit mounting plate; the needle type spinning unit is arranged on the spinning unit mounting plate and comprises a solution bin and a needle head mounting bottom plate; a spinning solution joint and a high-voltage electrostatic binding post are arranged on the side surface of the solution bin, a needle head mounting bottom plate is mounted on the upper side of the solution bin, and a plurality of spinning needle heads are mounted on the needle head mounting bottom plate; the power mechanism is arranged on the module base and used for driving the driving wheel to rotate. The rotary spinning module can efficiently produce the electrostatic spinning nano-fiber material with uniform film surface and mesh surface.)

1. A rotary spinning module for uniformly producing a nanofiber membrane is characterized by comprising a module base, a rotating mechanism, a needle spinning unit and a power mechanism;

the rotating mechanism is arranged on the module base and comprises an annular guide rail and a synchronous belt mechanism consisting of a driving wheel, a driven wheel and a synchronous belt; a plurality of sliding blocks are arranged on the annular guide rail in a sliding manner, are connected to the synchronous belt and are driven by the synchronous belt to slide along the annular guide rail; each sliding block is fixedly connected with a spinning unit mounting plate;

the needle type spinning unit is arranged on the spinning unit mounting plate and comprises a solution bin for storing spinning solution and a needle head mounting bottom plate; a spinning solution joint and a high-voltage electrostatic binding post are arranged on the side surface of the solution bin, the needle head mounting bottom plate is mounted on the upper side of the solution bin, and a plurality of spinning needle heads are mounted on the needle head mounting bottom plate;

the power mechanism is arranged on the module base and used for driving the driving wheel to rotate.

2. The rotary spinning module for uniformly producing nanofiber membranes as claimed in claim 1, wherein the spinning unit mounting plate is fixedly connected with the synchronous belt through a connecting mechanism.

3. The rotary spinning module for uniformly producing nanofiber membranes as claimed in claim 2, wherein the spinning unit mounting plate is made of insulating engineering plastics, the connecting mechanism is a 304 stainless steel machined part, and the synchronous belt is a full arc gear synchronous belt or a half arc gear synchronous belt.

4. The rotary spinning module for uniformly producing nanofiber membranes as claimed in claim 1, wherein the middle part of the ring-shaped guide rail is provided with a hydro-electric integrated slip ring.

5. The rotary spinning module for uniformly producing nanofiber membranes as claimed in claim 1, wherein a mounting base is fixed on the spinning unit mounting plate, and the needle spinning unit is fixedly connected to the mounting base through a supporting rod.

6. The rotary spinning module for uniformly producing nanofiber membranes as claimed in claim 1, wherein said needle mounting base plate has 2-1000 spinning needles mounted thereon, said spinning needles are arranged on said needle mounting base plate in a matrix form.

7. The rotary spinning module for uniformly producing nanofiber membranes as claimed in claim 1, wherein the mounting base, the support rod, the solution tank and the needle mounting base plate are made of insulating engineering plastics.

8. The rotary spinning module for uniformly producing nanofiber membranes as claimed in claim 3 or 7, wherein the insulating engineering plastic is PP, POM or PEEK.

9. The rotary spin module for uniform production of nanofiber membrane as claimed in claim 1, wherein the high voltage electrostatic binding post is an all copper aviation quick connector and the spinning solution connector is a machined PEEK quick twist connector.

10. The rotary spinning module for uniformly producing the nanofiber membrane as claimed in claim 1, wherein the power mechanism comprises a servo motor, a speed reducer is installed at the front end of the servo motor, a coupler is installed at the front end of the speed reducer, and the driving wheel is installed on the coupler.

Technical Field

The invention relates to the technical field of electrostatic spinning, in particular to a rotary spinning module for uniformly producing a nanofiber membrane.

Background

In 1934, Formhals invented experimental apparatus for preparing polymer fibers using electrostatic force and applied for a patent which issued a patent on how polymer solution forms jet flow between electrodes, which is the first patent describing in detail apparatus for preparing fibers using high voltage static electricity, and is recognized as the beginning of the electrostatic spinning technology for preparing fibers. Formhals uses a hollow tube type spinneret similar to a syringe needle.

With the development of the electrostatic spinning technology, the high-voltage electrostatic spinning nanofiber provides a brand-new membrane technical solution for the application of functional clothing fabric, battery diaphragm, liquid filtration and air filtration.

The uniformity and the production efficiency of the nanofiber membrane in high-end garment functional fabrics, battery separators and water filtration membrane products are two prominent problems of needle type electrostatic spinning. Due to the technical limitation of mass production equipment, the nanometer fiber product has the problems of nanometer uniformity of a film surface and a net surface and low production efficiency. The gram weight requirement of functional garment materials, battery diaphragms and liquid filtration on the nanofiber membrane is more than 5g/m²The prior electrostatic spinning equipment has low production efficiency and is only suitable for producing the product with the production efficiency less than 1g/m²The filter material cannot be industrially produced in large scale by more than 5g/m²A nanofiber membrane.

In addition, if the uniformity of the film surface of the nanofiber membrane used for the functional garment material is poor, the key performances of the garment such as water resistance, heat preservation, air permeability, moisture permeability and the like can be directly influenced. Membranes and/or meshes used for air filtration, liquid filtration, if poorly uniform, can directly affect the stability of filtration efficiency. At present, the electrostatic spinning equipment at home and abroad is divided into needle-free electrostatic spinning equipment and needle-containing electrostatic spinning equipment, and the needle-free electrostatic spinning equipment, such as needle-free production lines of Elmarco company and CN 104532482A, simultaneously adopts a steel wire spinning mode and seals a solution system. However, when a high-efficiency nanofiber air filter material or a liquid ion filtration nanofiber membrane is prepared, the production efficiency is low or normal spinning cannot be performed at all due to the fact that small pores and fine fibers are required, and the amount of solution adhered to steel wires is small under the condition that the solution viscosity is low. The electrostatic spinning equipment with needles disclosed in the Chinese patent with the publication number of CN105019042A can solve the problem that the viscosity of a solution system is low and can not be normal, tens of thousands of needles are arranged, and a plurality of needles are combined into a spinning module, so that the large-scale production can be realized. In order to realize spinning uniformity, the spinning module moves left and right in the Y-axis direction under the receiving screen, but in the reversing process, the left and right moving speed of the spinning module is limited under the influence of the self weight of the spinning module. To realize high production efficiency, the receiving device and the subsequent winding speed need to be accelerated, so that the problem of non-uniformity is easy to occur in the spinning process.

Disclosure of Invention

The invention aims to solve the technical problem of providing a rotary spinning module which can run below a receiving device at a constant speed in electrostatic spinning production and is controllable in speed; the spinning module is provided with a plurality of needle type spinning units, so that the electrostatic spinning nano-fiber material with uniform membrane surface and mesh surface can be efficiently produced.

In order to solve the technical problems, the invention provides the following technical scheme:

the invention provides a rotary spinning module for uniformly producing a nanofiber membrane, which comprises a module base, a rotating mechanism, a needle type spinning unit and a power mechanism, wherein the rotating mechanism is arranged on the module base;

the rotating mechanism is arranged on the module base and comprises an annular guide rail and a synchronous belt mechanism consisting of a driving wheel, a driven wheel and a synchronous belt; a plurality of sliding blocks are arranged on the annular guide rail in a sliding manner, are connected to the synchronous belt and are driven by the synchronous belt to slide along the annular guide rail; each sliding block is fixedly connected with a spinning unit mounting plate;

the needle type spinning unit is arranged on the spinning unit mounting plate and comprises a solution bin for storing spinning solution and a needle head mounting bottom plate; a spinning solution joint and a high-voltage electrostatic binding post are arranged on the side surface of the solution bin, the needle head mounting bottom plate is mounted on the upper side of the solution bin, and a plurality of spinning needle heads are mounted on the needle head mounting bottom plate;

the power mechanism is arranged on the module base and used for driving the driving wheel to rotate.

Further, the spinning unit mounting plate is fixedly connected with the synchronous belt through a connecting mechanism.

Further, the spinning unit mounting plate is made of insulating engineering plastics, and the connecting mechanism is a 304 stainless steel machined part.

Further, the synchronous belt is a full-arc gear synchronous belt or a semi-arc gear synchronous belt.

Furthermore, a liquid-electricity integrated combined sliding ring is arranged in the middle of the annular guide rail.

Furthermore, a mounting base is fixed on the spinning unit mounting plate, and the needle type spinning unit is fixedly connected to the mounting base through a support rod.

Furthermore, install 2-1000 spinning syringe needles on the syringe needle mounting plate, the spinning syringe needle is arranged in the matrix on the syringe needle mounting plate.

Furthermore, the mounting base, the supporting rod, the solution bin and the needle head mounting bottom plate are all made of insulating engineering plastics.

Further, the insulating engineering plastic is PP, POM or PEEK.

Further, the high-voltage electrostatic binding post is an all-copper aviation quick connector, and the spinning solution connector is a machined PEEK quick screwed connector.

Furthermore, the power mechanism comprises a servo motor, a speed reducer is installed at the front end of the servo motor, a coupler is arranged at the front end of the speed reducer, and the driving wheel is installed on the coupler.

Compared with the prior art, the invention has the beneficial effects that:

1. according to the rotary spinning module for uniformly producing the nanofiber membrane, the spinning module is arranged in the rotating mechanism, so that the spinning module can run below the receiving device at a constant speed in electrostatic spinning production, and the speed of the spinning module can be set higher due to no need of frequent reversing, so that the spinning uniformity is improved; in addition, a plurality of needle type spinning units are arranged in the spinning module, so that the electrostatic spinning nanofiber material with uniform membrane surface and mesh surface can be efficiently produced.

2. The rotary spinning module can produce the nanofiber membrane and the net in a large scale at high efficiency, and the product has excellent uniformity, and the functional nanofiber membrane fabric for clothing has high static water pressure, excellent air permeability, low gram weight and light and thin clothing fabric.

3. The rotary spinning module has the advantages that the produced nanofiber membrane has large specific surface area and high porosity, and has high filtering efficiency when being used for filtering air and liquid.

Drawings

FIG. 1 is a schematic structural diagram of a rotary spinning module according to the present invention;

fig. 2 is a schematic structural view of the rotating mechanism;

FIG. 3 is a schematic structural view of a needle spinning unit;

FIG. 4 is a schematic diagram of the power mechanism;

FIG. 5 is a schematic diagram of the structure of an industrial electrospinning system;

wherein: 100. a rotary spinning module; 110. a module base; 120. a rotation mechanism; 121. a driving wheel; 122. a synchronous belt; 123. a driven wheel; 124. an annular guide rail; 125. a slider; 126. a spinning unit mounting plate; 127. a connecting mechanism; 128. a liquid-electricity integrated combined slip ring; 130. a needle spinning unit; 131. a solution bin; 132. a needle head mounting base plate; 133. spinning solution piecing; 134. a high voltage electrostatic binding post; 135. a spinning needle head; 136. mounting a base; 137. a support bar; 140. a power mechanism; 141. a servo motor; 142. a speed reducer; 143. a coupling; 210. an annular receiving device; 220. an unreeling machine; 230. a winding machine; 240. a power roller; 250. an electrode plate; 260. a high voltage power supply; 310. a reservoir; 320. and a liquid supply pump.

Detailed Description

The present invention is further described below in conjunction with the following figures and specific examples so that those skilled in the art may better understand the present invention and practice it, but the examples are not intended to limit the present invention.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

As described in the prior art, the uniformity and production efficiency of nanofiber membrane products are two major problems of electrospinning. At present, neither needle-free electrostatic spinning (such as Elmarco and CN 104532482A needle-free production line) nor needle electrostatic spinning (such as CN105019042A) in the prior art can simultaneously solve the two problems.

In order to solve the technical problem, the inventors have long studied and proposed a rotary spinning die set 100 for uniformly producing a nanofiber membrane, wherein the rotary spinning die set 100 can efficiently produce an electrospun nanofiber material having a uniform membrane surface web. The rotary spinning module 100 is described in detail below with reference to the drawings.

As shown in fig. 1, the rotary spinning module 100 for uniformly producing nanofiber membranes according to the present invention comprises a module base 110, a rotating mechanism 120, a needle spinning unit 130, and a power mechanism 140.

Referring to fig. 2, the rotating mechanism 120 is disposed on the module base 110, and includes an annular guide rail 124 and a synchronous belt mechanism composed of a driving wheel 121, a driven wheel 123 and a synchronous belt 122. The timing belt 122 is preferably a full arc gear timing belt or a half arc gear timing belt, and more preferably an RPP8M rabbit-tooth type timing belt.

A plurality of sliding blocks 125 are slidably disposed on the endless rail 124, and the sliding blocks 125 are connected to the timing belt 122 and are driven by the timing belt 122 to slide along the endless rail 124. Preferably, the spinning unit mounting plate 126 is fixedly connected with the timing belt 122 through a connecting mechanism 127, and the connecting mechanism 127 is preferably a 304 stainless steel machined part.

Each sliding block 125 is fixedly connected with a spinning unit mounting plate 126, the spinning unit mounting plate 126 is preferably a plate made of insulating engineering plastics, the engineering plastics are preferably PP, POM or PEEK, and more preferably PEEK.

Referring to fig. 3, the needle spinning unit 130 is mounted on the spinning unit mounting plate 126, and includes a solution tank 131 and a needle mounting plate 132. The solution storage 131 is used for storing a spinning solution, and is preferably made of an insulating engineering plastic plate, and more preferably, is made through a whole plate engraving process. The engineering plastic plate is preferably PP, POM or PEEK, and more preferably PEEK. A spinning solution joint 133 is arranged on the side surface of the solution bin 131, and spinning solution can be pumped into the solution bin 131 through the spinning solution joint 133. The spin solution joint 133 is preferably a machined PEEK quick twist joint. In addition, a high voltage electrostatic binding post 134 is further disposed on the side of the solution chamber 131, and the high voltage electrostatic binding post 134 is used for connecting with an external high voltage to charge the spinning solution. The high voltage electrostatic post 134 is preferably a commercially available all copper aircraft quick connector.

Preferably, a mounting base 136 is fixed on the spinning unit mounting plate 126, a supporting rod 137 is fixed on the mounting base 136, and the bottom center position of the solution tank 131 is fixed on the supporting rod 137. Preferably, the support bar 137 and the mounting base 136 are made of insulating engineering plastic, preferably PP, POM or PEEK, and more preferably PEEK.

The needle mounting plate 132 is installed on the upper side of the solution chamber 131, and a plurality of spinning needles 135 are installed on the needle mounting plate 132. The arrangement of the spinning needles 135 on the needle mounting plate 132 is not limited, and preferably, the spinning needles 135 are arranged on the needle mounting plate 132 in a matrix form. In the present invention, the number of the spinning needles 135 is not limited and may be set as required. Preferably, the number of spinning needle 135 is 2-1000, such as 10-1000 spinning needles 135, 50-1000 spinning needles 135 or 100-1000 spinning needles 135.

Preferably, a liquid-electricity integrated slip ring 128 is arranged in the middle of the ring-shaped guide rail 124, and after the conducting wires of the external high-voltage power supply 260 and the pipeline of the liquid supply system pass through the liquid-electricity integrated slip ring 128, the conducting wires and the pipeline are respectively connected with the spinning solution connector 133 and the high-voltage electrostatic binding post 134 on the solution bin 131, so that the situation that a plurality of conducting wires and the pipeline are disordered and tangled when the needle spinning unit 130 moves circularly is avoided.

The power mechanism 140 is mounted on the module base 110 and is configured to drive the driving wheel 121 to rotate. Referring to fig. 4, preferably, the power mechanism 140 includes a servo motor 141, a speed reducer 142 is installed at a front end of the servo motor 141, a coupler 143 is installed at a front end of the speed reducer 142, and the driving wheel 121 is installed on the coupler 143.

The rotary spinning module 100 of the present invention may be combined with a liquid supply system, a receiving unit, and other modules to form an industrial electrospinning system, and fig. 5 shows an exemplary embodiment of the industrial electrospinning system.

As shown in fig. 5, in the industrial electrospinning system, the receiving unit includes an annular receiving device 210, and the receiving substrate is unwound by an unwinding machine 220, and is wound by a winding machine 230 after passing through the annular receiving device 210. Above the receiving substrate, an electrode plate 250 is disposed, and the electrode plate 250 is grounded or connected to the negative electrode of a high voltage power supply 260. The rotary spinning module 100 is arranged below the receiving unit, the middle part of the rotary spinning module is provided with a liquid-electricity integrated combined slip ring 128, and the anode of the high-voltage power supply 260 passes through the liquid-electricity integrated combined slip ring 128 and then is connected with the high-voltage electrostatic binding posts 134 on the needle spinning units 130, so that high voltage is applied to the spinning solution. The liquid supply system comprises a liquid storage tank 310 and a liquid supply pump 320, under the action of the liquid supply pump 320, the spinning solution in the liquid storage tank 310 passes through the liquid-electricity integrated slip ring 128, then is connected with the spinning solution joint 133 on each needle spinning unit 130, and is injected into the solution bin 131.

When the industrial electrostatic spinning system performs electrostatic spinning, each needle spinning unit 130 periodically and circularly moves on the annular guide rail 124 through the sliding block 125 under the driving of the synchronous belt mechanism, and compared with the linear reciprocating motion of the existing spinning unit, the motion speed of the needle spinning unit 130 is higher and uniform motion can be realized due to no frequent reversing, so that the nano fibers on the receiving substrate are more uniform. In addition, a plurality of needle spinning units 130 can be arranged on the annular guide rail 124, and a plurality of spinning needle heads 135 can be arranged on each needle spinning unit 130, so that the spinning efficiency can be greatly improved, and the nanofiber webs and membranes can be efficiently produced in a large scale.

The nanofiber membrane and the net produced by the industrialized electrostatic spinning system have the advantages of excellent uniformity, excellent water pressure and air permeability of the nanofiber membrane and stable filtering efficiency of the filter material.

The above-mentioned embodiments are merely preferred embodiments for fully illustrating the present invention, and the scope of the present invention is not limited thereto. The equivalent substitution or change made by the technical personnel in the technical field on the basis of the invention is all within the protection scope of the invention. The protection scope of the invention is subject to the claims.