阅读说明：本技术 一种熔喷无纺布的生产工艺 (Production process of melt-blown non-woven fabric ) 是由 陈康 程明 于 2020-07-03 设计创作，主要内容包括：本发明涉及熔喷无纺布生产技术领域,具体的说是一种熔喷无纺布的生产工艺,该工艺使用的挤压装置包括基座、上支板、下支板、柔性膜、上滚柱、下滚柱、弧形板和电机；所述基座由底板和两个侧板组成；两个所述侧板之间滚动连接着上滚柱和下滚柱；所述上滚柱位于下滚柱的正上方；所述上滚柱的一端设有一号齿轮；所述下滚柱的一端设有二号齿轮；所述一号齿轮啮合着二号齿轮；所述二号齿轮的一侧设有电机；所述电机的输出轴与二号齿轮连接；本发明所述的一种熔喷无纺布的生产工艺中使用的挤压装置通过电机带动两个柔性膜转动与气缸挤压柔性膜内部的沙子相配合,从而使得溶体表面的纤维挤压的更紧,提高了熔喷无纺布的品质。(The invention relates to the technical field of melt-blown non-woven fabric production, in particular to a production process of melt-blown non-woven fabric, wherein an extrusion device used in the process comprises a base, an upper support plate, a lower support plate, a flexible film, an upper roller, a lower roller, an arc-shaped plate and a motor; the base is composed of a bottom plate and two side plates; an upper roller and a lower roller are connected between the two side plates in a rolling manner; the upper roller is positioned right above the lower roller; one end of the upper roller is provided with a first gear; one end of the lower roller is provided with a second gear; the first gear is meshed with the second gear; a motor is arranged on one side of the second gear; an output shaft of the motor is connected with a second gear; the extrusion device used in the production process of the melt-blown non-woven fabric drives the two flexible films to rotate through the motor and is matched with the air cylinder to extrude sand in the flexible films, so that fibers on the surface of a solution are extruded more tightly, and the quality of the melt-blown non-woven fabric is improved.)

1. A production process of melt-blown non-woven fabric is characterized in that: the method comprises the following steps:

s1: preparation of polymer: adding 40-50 parts of polybutylene terephthalate, 20-30 parts of polycaprolactam powder, 5-10 parts of sodium molybdate dihydrate, 1-2 parts of N-octyl diamino ethyl glycine hydrochloride and 2-5 parts of isopropyl tristearate into a stirring kettle, stirring for 3-5 hours to prepare a polymer solution, and controlling the temperature of the stirring kettle at 40-50 ℃;

s2: and (3) melting and spraying: spraying the polymer solution on a mesh belt receiver through a melt-blown spray head, controlling the temperature to be 200 ℃, the temperature of the spray head to be 240 ℃, the temperature of the traction hot air flow to be 270 ℃ and the air pressure to be 0.4 MPa;

s3: and (3) melt extrusion: the method comprises the following steps of (1) drawing a solution on a mesh belt receiver to a contact position between two flexible membranes (4) of an extrusion device, firstly starting a motor (8) to drive the two flexible membranes (4) to rotate, then starting an air cylinder (13) to extrude solid particles in the flexible membranes (4) through an arc-shaped plate (7), enabling the solid particles to fill fibers at the lower part of the surface of the solution through the flexible membranes (4), extruding the fibers on the surface of the solution, and starting a water pump to cool the outer sides of the flexible membranes (4) through water flow;

s4: cooling the fiber: cooling the extruded solution in a cooling chamber to obtain melt-blown non-woven fabric, and controlling the temperature of the cooling chamber at 5-10 ℃;

the extrusion device used in S3 comprises a base (1), an upper supporting plate (2), a lower supporting plate (3), a flexible membrane (4), an upper roller (5), a lower roller (6), an arc-shaped plate (7) and a motor (8); the base (1) consists of a bottom plate (11) and two side plates (12); an upper roller (5) and a lower roller (6) are connected between the two side plates (12) in a rolling way; the upper roller (5) is positioned right above the lower roller (6); one end of the upper roller (5) is provided with a first gear (9); one end of the lower roller (6) is provided with a second gear (10); the first gear (9) is meshed with the second gear (10); a motor (8) is arranged on one side of the second gear (10); an output shaft of the motor (8) is connected with a second gear (10), and the motor (8) is fixed on the side plate (12); the upper roller (5) and the lower roller (6) are respectively sleeved with a flexible film (4); solid particles are filled in each flexible membrane (4), and a group of arc-shaped plates (7) are arranged on the outer side of each flexible membrane (4); the number of the arc-shaped plates (7) is at least three, an arc-shaped cavity (71) is arranged in each arc-shaped plate (7), and a liquid inlet pipe (72) is arranged at one end of each arc-shaped plate (7); the liquid inlet pipe (72) extends into the corresponding arc-shaped cavity (71); the other end of each arc-shaped plate (7) is provided with a liquid outlet pipe (73); the liquid outlet pipes (73) extend into the corresponding arc-shaped cavities (71); each liquid inlet pipe (72) and each liquid outlet pipe (73) are connected to a water pump; the upper support plate (2) is fixed at the upper ends of the two side plates (12); the lower support plate (3) is fixed at the upper end of the bottom plate (11); the cross sections of the upper support plate (2) and the lower support plate (3) are arc-shaped; the inner sides of the upper support plate (2) and the lower support plate (3) are respectively provided with a group of cylinders (13); the number of the cylinders (13) is at least six, and the end part of each cylinder (13) is connected with the outer side of the corresponding arc-shaped plate (7).

2. The process of claim 1, wherein the melt-blown nonwoven fabric is produced by: wherein the edges of the two arc-shaped plates (7) are provided with two supporting rods (14); the two supporting rods (14) are rotatably connected with a roller (15).

3. The process of claim 2, wherein the melt-blown nonwoven fabric is produced by: six groups of U-shaped rods (16) are arranged on each roller (15); at least ten U-shaped rods (16) are arranged in each group, and the U-shaped rods (16) are uniformly distributed on the rolling rods (15).

4. The process of claim 3, wherein the melt-blown nonwoven fabric is produced by: each roller (15) is internally provided with a hollow structure, each roller (15) is provided with an air outlet hole (151), and one end of each roller (15) is communicated with an air inlet pipe (17); the other end of each air inlet pipe (17) is connected to an air pump.

5. The process of claim 2, wherein the melt-blown nonwoven fabric is produced by: an arc-shaped groove is formed in the inner side of each arc-shaped plate (7); a group of round rods (18) are rotationally connected in each arc-shaped groove; the number of the round rods (18) is at least three, and the round rods (18) are provided with bulges.

6. The process of claim 1, wherein the melt-blown nonwoven fabric is produced by: a group of elastic plates (19) are respectively arranged on the upper roller (5) and the lower roller (6); the number of the elastic plates (19) is at least three, one side of each elastic plate (19) is provided with an elastic sheet (20), and the end part of each elastic plate (19) is provided with a cylinder (21); each cylinder (21) is provided with a V-shaped groove (211).

Technical Field

The invention relates to the technical field of melt-blown non-woven fabric production, in particular to a production process of melt-blown non-woven fabric.

Background

A nonwoven fabric composed of oriented or random fibers; it is called cloth because of its appearance and certain properties; the non-woven fabric has the characteristics of moisture resistance, air permeability, flexibility, light weight, no combustion supporting, easy decomposition, no toxicity or irritation, rich color, low price, recycling and the like, for example, the non-woven fabric is produced by adopting polypropylene granules as a raw material through a continuous one-step method of high-temperature melting, spinning, line laying and hot-pressing coiling; the solution spraying method originated in the 50 th of the 20 th century and is an important method for preparing superfine fiber by utilizing the drafting effect of high-temperature and high-speed hot air flow; feeding the dried polymer slices into a screw extruder, heating and melting the polymer slices, enabling the polymer slices to reach a spinning nozzle at the front end of a nozzle through a melt distribution pipeline, and ejecting the polymer slices from the spinning nozzle; meanwhile, the melt is blown by high-temperature and high-pressure air flow which forms a certain angle with the extrusion direction of the melt on two sides of the spinneret orifice, the melt is stretched into superfine fiber under the action of the two high-speed hot air flows and is solidified into filament through heat exchange with surrounding cold air, and in addition, a spraying device can be arranged below the cooling air to further rapidly cool the fiber; the solidified fibers are deposited on a receiving device under the action of air flow, and a non-woven fabric is formed through the extrusion action of a roller; however, in the prior art, the melt is extruded by a roller to form, and the fibers on the melt are randomly distributed, so that the surface of the melt is uneven, and the fibers at the lower part of the surface of the melt cannot be tightly extruded by the roller, so that the formed melt-blown non-woven fabric is easy to damage, and the quality of the non-woven fabric is affected.

Disclosure of Invention

In order to make up for the defects of the prior art, the extrusion device used in the invention drives the two flexible films to rotate through the motor and is matched with the cylinder to extrude solid particles in the flexible films, so that fibers on the surface of a solution are extruded more tightly, and the quality of the melt-blown non-woven fabric is improved.

The technical scheme adopted by the invention for solving the technical problems is as follows: the invention relates to a production process of melt-blown non-woven fabric, which comprises the following steps:

s1: preparation of polymer: adding 40-50 parts of polybutylene terephthalate, 20-30 parts of polycaprolactam powder, 5-10 parts of sodium molybdate dihydrate, 1-2 parts of N-octyl diamino ethyl glycine hydrochloride and 2-5 parts of isopropyl tristearate into a stirring kettle, stirring for 3-5 hours to prepare a polymer solution, and controlling the temperature of the stirring kettle at 40-50 ℃; the particles in the solution are uniformly mixed by stirring, so that the toughness of the polymer solution is improved;

s2: and (3) melting and spraying: spraying the polymer solution on a mesh belt receiver through a melt-blown spray head, controlling the temperature to be 200 ℃, the temperature of the spray head to be 240 ℃, the temperature of the traction hot air flow to be 270 ℃ and the air pressure to be 0.4 MPa; by controlling the air pressure and the temperature, the melt sprayed by the melt-blowing nozzle is ensured to be filamentous, so that better forming is realized;

s3: and (3) melt extrusion: the method comprises the following steps of (1) drawing a solution on a mesh belt receiver to a contact position between two flexible membranes of an extrusion device, starting a motor to drive the two flexible membranes to rotate, starting an air cylinder to extrude solid particles in the flexible membranes through an arc-shaped plate, enabling the solid particles to fill fibers at the lower position of the solution surface through the flexible membranes, extruding the fibers on the solution surface, and starting a water pump to cool the outer sides of the flexible membranes through water flow; the motor drives the two flexible films to rotate and the air cylinder extrudes solid particles in the flexible films to match, so that fibers on the surface of the melt are extruded more tightly, and the quality of the melt-blown non-woven fabric is improved;

s4: cooling the fiber: cooling the extruded solution in a cooling chamber to obtain melt-blown non-woven fabric, and controlling the temperature of the cooling chamber at 5-10 ℃; the extruded polymer solution is cooled, so that the fibers on the solution are more closely connected;

the extrusion device used in the S3 comprises a base, an upper support plate, a lower support plate, a flexible film, an upper roller, a lower roller, an arc-shaped plate and a motor; the base is composed of a bottom plate and two side plates; an upper roller and a lower roller are connected between the two side plates in a rolling manner; the upper roller is positioned right above the lower roller; one end of the upper roller is provided with a first gear; one end of the lower roller is provided with a second gear; the first gear is meshed with the second gear; a motor is arranged on one side of the second gear; an output shaft of the motor is connected with a second gear, and the motor is fixed on the side plate; the upper roller and the lower roller are respectively sleeved with a flexible film; solid particles are filled in each flexible membrane, and a group of arc-shaped plates are arranged on the outer side of each flexible membrane; the number of the arc-shaped plates is at least three, an arc-shaped cavity is arranged in each arc-shaped plate, and a liquid inlet pipe is arranged at one end of each arc-shaped plate; the liquid inlet pipe extends into the corresponding arc-shaped cavity; the other end of each arc-shaped plate is provided with a liquid outlet pipe; the liquid outlet pipes extend into the corresponding arc-shaped cavities; each liquid inlet pipe and each liquid outlet pipe are connected to a water pump; the upper supporting plate is fixed at the upper ends of the two side plates; the lower support plate is fixed at the upper end of the bottom plate; the cross sections of the upper support plate and the lower support plate are arc-shaped; a group of cylinders are arranged on the inner sides of the upper support plate and the lower support plate; the number of the cylinders is at least six, and the end part of each cylinder is connected with the outer side of the corresponding arc-shaped plate; when the device is used, the melt-blown spray head randomly sprays the solution on the mesh belt receiver, the extrusion device can extrude the solution on the mesh belt receiver, but because the fibers on the solution are randomly distributed, the surface of the solution is uneven, the extrusion device cannot tightly extrude the fibers at the lower part of the surface of the solution, so that the formed melt-blown non-woven fabric is easy to damage, and the quality of the non-woven fabric is influenced; therefore, the invention pulls the solution on the mesh belt receiver to the contact position between the two flexible films, controls the cylinder to extend, thereby supporting the arc-shaped plate on the outer side of the flexible films, extrudes the flexible films through the arc-shaped plate, thereby reducing the space inside the flexible films, increases the pressure at the contact position of the two flexible films after the solid particles inside the flexible films are extruded, enables the solid particles to fill fibers at the lower part of the solution surface through the flexible films due to the characteristics of the solid particles, starts the motor to drive the second gear to rotate, thereby driving the lower roller to rotate, drives the first gear to rotate due to the meshing of the first gear with the second gear, thereby driving the upper roller to rotate, the flexible films are respectively sleeved on the upper roller and the lower roller, thereby the two flexible films extrude the solution surface through the solid particles, and further tightly extrude the fibers on the solution surface, the quality of the melt-blown non-woven fabric is improved, the water pump is started, the water in the arc-shaped cavity is drained through the liquid inlet pipe, and the water in the arc-shaped cavity is pumped away through the liquid outlet pipe, so that the temperature of the arc-shaped plate is reduced, the outer side of the flexible film can be cooled due to the contact of the arc-shaped plate and the flexible film, and then the melt is cooled through the flexible film, so that the melt is formed more quickly, and the efficiency of extruding the melt by the two flexible films is improved; according to the invention, the motor drives the two flexible membranes to rotate and the air cylinder extrudes the solid particles in the flexible membranes to match, so that the fibers on the surface of the melt are extruded more tightly, and the quality of the melt-blown non-woven fabric is improved.

Preferably, two supporting rods are arranged at the edges of the two arc-shaped plates; the two support rods are rotatably connected with a roller; when the extrusion device is used, the upper roller and the lower roller respectively drive the corresponding flexible films to rotate, and the edges of the arc plates rub the flexible films due to the fact that the arc plates are attached to the outer sides of the flexible films, so that the flexible films are damaged for a long time, solid particles in the flexible films fall out, and the extrusion device fails; therefore, the rolling rod is rotatably connected between the two support rods, and the rolling rod applies pressure to the flexible film, so that the flexible film at the position is flattened, the upper roller and the lower roller drive the corresponding flexible film to rotate, the rolling rod is driven to rotate, the flexible film can better enter the arc-shaped plate, and the friction force between the flexible film and the edge of the arc-shaped plate is reduced; according to the invention, the flexible film is flattened in advance, so that the flexible film is more smoothly contacted with the arc-shaped plate, the friction force between the flexible film and the edge of the arc-shaped plate is reduced, and the service life of the flexible film is prolonged.

Preferably, six groups of U-shaped rods are arranged on each roller rod; at least ten U-shaped rods are arranged in each group, and the U-shaped rods are uniformly distributed on the rolling rods; when the device is used, after the two flexible films extrude the solution, a part of fibers on the solution can be attached to the outer sides of the flexible films, so that when the two flexible films extrude the solution again after rotating for a circle, the original fibers can interfere with the fibers at the moment, and further the fibers on the surface of the solution at the position cannot be compressed; therefore, the flexible membrane is extruded by the roller, the roller is driven by the flexible membrane to rotate, and the U-shaped rod is arranged on the roller, so that the roller can scrape fibers on the flexible membrane through the U-shaped rod while rotating, and the effect of cleaning the flexible membrane is achieved; the invention cleans the fibers on the flexible membrane through the U-shaped rod on the rolling rod, thereby ensuring the accuracy of the flexible membrane in extruding the surface of the solution through the solid particles.

Preferably, each roller is provided with a hollow structure, each roller is provided with an air outlet hole, and one end of each roller is communicated with an air inlet pipe; the other end of each air inlet pipe is connected to an air pump; when the device is used, the U-shaped rod cannot completely clean fibers on the flexible membrane, and the cleaned fibers can be wrapped on the U-shaped rod, so that the U-shaped rod can lose effectiveness after long-term use, therefore, the device can work through the air pump, air is discharged into the hollow structure of the roller rod through the air inlet pipe, so that the air outlet hole can give out air, when the roller rod controls the U-shaped rod to extrude the flexible membrane, the air is discharged through the air outlet hole, so that the fibers on the flexible membrane are blown away through air flow, the effect of cleaning the flexible membrane is achieved, meanwhile, the air flow can blow away the fibers on the U-shaped rod, the cleaning of the U-shaped rod is ensured, the using effect of the U-shaped rod is improved, the air flow generated by the air outlet hole can blow away redundant fibers on the extruded melt, and the quality of the melt-blown non-woven fabric is ensured; the air pump is used for discharging air from the air outlet hole, so that the U-shaped rod and the flexible membrane are cleaned, and the using effect of the U-shaped rod and the flexible membrane is ensured.

Preferably, an arc-shaped groove is formed in the inner side of each arc-shaped plate; each arc-shaped groove is rotationally connected with a group of round rods; the number of the round rods is at least three, and the round rods are provided with bulges; when the device is used, after the surfaces of the melts are extruded by the two flexible films through the solid particles, gaps among the solid particles are reduced under the action of pressure, so that the solid particles are easy to agglomerate, and the extrusion effect is influenced; therefore, the arc-shaped groove is formed in the inner side of the arc-shaped plate, the round rod is rotatably connected in the arc-shaped groove, so that the friction force between the flexible membrane and the arc-shaped plate is reduced, the bulge is formed in the round rod, so that the round rod extrudes solid particles in the flexible membrane, the solid particles in the flexible membrane are scattered, the looseness among the solid particles is ensured, and the extrusion effect of the solid particles in the two flexible membranes is improved; according to the invention, the round rod is rotatably connected in the arc-shaped groove and is matched with the bulge arranged on the round rod, so that the scattering effect on solid particles inside the flexible membrane is achieved, and the application effect of solid particle extrusion is improved.

Preferably, a group of spring plates are respectively arranged on the upper roller and the lower roller; the number of the elastic plates is at least three, one side of each elastic plate is provided with an elastic sheet, and the end part of each elastic plate is provided with a cylinder; each cylinder is provided with a V-shaped groove; when the extrusion die is used, the extrusion force of solid particles is limited, and the solid particles are easily adhered to the inner wall of the flexible membrane, so that the extrusion effect of the solid particles on a melt is influenced; therefore, the elastic plate is provided with the elastic sheet at one side, so that the elastic force of the elastic plate is increased, the extrusion effect on a melt is increased, and when the cylinder moves to the periphery of the round rod, the inner wall and the outer wall of the flexible film are better cleaned through the extrusion of the cylinder and the round rod; according to the invention, the cylinder at the end part of the elastic plate is matched with the round bar, so that the cleaning effect of cleaning the inner wall and the outer side of the flexible membrane is enhanced, solid particles are prevented from being stuck on the inner wall of the flexible membrane for a long time, and the application effect of the extrusion device is improved.

The invention has the following beneficial effects:

1. the extrusion device used in the invention drives the two flexible membranes to rotate through the motor and is matched with the cylinder for extruding solid particles in the flexible membranes, so that the fibers on the surface of the melt are extruded more tightly, and the quality of the melt-blown non-woven fabric is improved.

2. The extrusion device used in the invention flattens the flexible film in advance, so that the contact between the flexible film and the arc-shaped plate is smoother, the friction force between the flexible film and the edge of the arc-shaped plate is reduced, and the service life of the flexible film is prolonged.

3. The extrusion device used in the invention cleans the fibers on the flexible membrane through the U-shaped rod on the rolling rod, thereby ensuring the accuracy of extruding the flexible membrane on the surface of the solution through the solid particles.

Drawings

The invention will be further explained with reference to the drawings.

FIG. 1 is a flow chart of the present invention;

FIG. 2 is a perspective view of the extrusion apparatus of the present invention;

FIG. 3 is an enlarged view at A in FIG. 2;

FIG. 4 is an internal cross-sectional view of a flexible membrane in the extrusion apparatus of the present invention;

FIG. 5 is an enlarged view at B in FIG. 4;

in the figure: the device comprises a base 1, a bottom plate 11, a side plate 12, an upper supporting plate 2, a lower supporting plate 3, a flexible film 4, an upper roller 5, a lower roller 6, an arc-shaped plate 7, an arc-shaped cavity 71, a liquid inlet pipe 72, a liquid outlet pipe 73, a motor 8, a first gear 9, a second gear 10, a cylinder 13, a supporting rod 14, a rolling rod 15, an air outlet hole 151, a U-shaped rod 16, an air inlet pipe 17, a round rod 18, an elastic plate 19, an elastic sheet 20, a cylinder 21 and a V-shaped groove 211.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

As shown in fig. 1 to 5, the production process of the melt-blown nonwoven fabric of the present invention comprises the following steps:

s1: preparation of polymer: adding 40-50 parts of polybutylene terephthalate, 20-30 parts of polycaprolactam powder, 5-10 parts of sodium molybdate dihydrate, 1-2 parts of N-octyl diamino ethyl glycine hydrochloride and 2-5 parts of isopropyl tristearate into a stirring kettle, stirring for 3-5 hours to prepare a polymer solution, and controlling the temperature of the stirring kettle at 40-50 ℃; the particles in the solution are uniformly mixed by stirring, so that the toughness of the polymer solution is improved;

s2: and (3) melting and spraying: spraying the polymer solution on a mesh belt receiver through a melt-blown spray head, controlling the temperature to be 200 ℃, the temperature of the spray head to be 240 ℃, the temperature of the traction hot air flow to be 270 ℃ and the air pressure to be 0.4 MPa; by controlling the air pressure and the temperature, the melt sprayed by the melt-blowing nozzle is ensured to be filamentous, so that better forming is realized;

s3: and (3) melt extrusion: the method comprises the following steps of (1) drawing a solution on a mesh belt receiver to a contact position between two flexible membranes 4 of an extrusion device, starting a motor 8 to drive the two flexible membranes 4 to rotate, starting an air cylinder 13 to extrude solid particles in the flexible membranes 4 through an arc-shaped plate 7, enabling the solid particles to fill fibers at the lower part of the solution surface through the flexible membranes 4, extruding the fibers on the solution surface, and starting a water pump to cool the outer sides of the flexible membranes 4 through water flow; the motor 8 drives the two flexible membranes 4 to rotate and is matched with the cylinder 13 to extrude solid particles in the flexible membranes 4, so that fibers on the surface of a solution are extruded more tightly, and the quality of melt-blown non-woven fabrics is improved;

s4: cooling the fiber: cooling the extruded solution in a cooling chamber to obtain melt-blown non-woven fabric, and controlling the temperature of the cooling chamber at 5-10 ℃; the extruded polymer solution is cooled, so that the fibers on the solution are more closely connected;

the extrusion device used in S3 includes a base 1, an upper support plate 2, a lower support plate 3, a flexible membrane 4, an upper roller 5, a lower roller 6, an arc-shaped plate 7 and a motor 8; the base 1 consists of a bottom plate 11 and two side plates 12; the upper roller 5 and the lower roller 6 are connected between the two side plates 12 in a rolling way; the upper roller 5 is positioned right above the lower roller 6; one end of the upper roller 5 is provided with a first gear 9; one end of the lower roller 6 is provided with a second gear 10; the first gear 9 is meshed with the second gear 10; a motor 8 is arranged on one side of the second gear 10; an output shaft of the motor 8 is connected with a second gear 10, and the motor 8 is fixed on a side plate 12; the upper roller 5 and the lower roller 6 are respectively sleeved with a flexible film 4; solid particles are filled in each flexible membrane 4, and a group of arc-shaped plates 7 are arranged on the outer side of each flexible membrane 4; the number of the arc-shaped plates 7 is at least three, an arc-shaped cavity 71 is arranged in each arc-shaped plate 7, and a liquid inlet pipe 72 is arranged at one end of each arc-shaped plate 7; the liquid inlet pipe 72 extends into the corresponding arc-shaped cavity 71; the other end of each arc-shaped plate 7 is provided with a liquid outlet pipe 73; the liquid outlet pipe 73 extends into the corresponding arc-shaped cavity 71; each liquid inlet pipe 72 and each liquid outlet pipe 73 are connected to a water pump; the upper support plate 2 is fixed at the upper ends of the two side plates 12; the lower support plate 3 is fixed at the upper end of the bottom plate 11; the cross sections of the upper support plate 2 and the lower support plate 3 are both arc-shaped; a group of cylinders 13 are arranged on the inner sides of the upper support plate 2 and the lower support plate 3; the number of the cylinders 13 is at least six, and the end part of each cylinder 13 is connected with the outer side of the corresponding arc-shaped plate 7; when the device is used, the melt-blown spray head randomly sprays the solution on the mesh belt receiver, the extrusion device can extrude the solution on the mesh belt receiver, but because the fibers on the solution are randomly distributed, the surface of the solution is uneven, the extrusion device cannot tightly extrude the fibers at the lower part of the surface of the solution, so that the formed melt-blown non-woven fabric is easy to damage, and the quality of the non-woven fabric is influenced; therefore, the invention pulls the solution on the mesh belt receiver to the contact position between the two flexible films 4, controls the cylinder 13 to extend, thereby supporting the arc-shaped plate 7 on the outer side of the flexible films 4, extrudes the flexible films 4 through the arc-shaped plate 7, thereby reducing the space inside the flexible films 4, increases the pressure at the contact position of the two flexible films 4 after the solid particles inside the flexible films 4 are extruded, and enables the solid particles to fill fibers at the lower part of the solution surface through the flexible films 4 due to the characteristics of the solid particles, the starting motor 8 drives the second gear 10 to rotate, thereby driving the lower roller 6 to rotate, and the first gear 9 is meshed with the second gear 10, so the second gear 10 drives the first gear 9, thereby driving the upper roller 5 to rotate, the flexible films 4 are respectively sleeved on the upper roller 5 and the lower roller 6, so the two flexible films 4 extrude the solution surface through the solid particles, the fibers on the surface of the solution are extruded more tightly, the quality of the melt-blown non-woven fabric is improved, the water pump is started, the water inside the arc-shaped cavity 71 is drained through the liquid inlet pipe 72, and then the water inside the arc-shaped cavity 71 is pumped away through the liquid outlet pipe 73, so that the temperature of the arc-shaped plate 7 is reduced, the outer side of the flexible membrane 4 can be cooled due to the contact of the arc-shaped plate 7 and the flexible membrane 4, the solution is cooled through the flexible membrane 4, the solution is formed more quickly, and the efficiency of extruding the solution by the two flexible membranes 4 is improved; according to the invention, the motor 8 drives the two flexible membranes 4 to rotate and is matched with the cylinder 13 to extrude solid particles in the flexible membranes 4, so that fibers on the surface of a solution are extruded more tightly, and the quality of melt-blown non-woven fabrics is improved.

As an embodiment of the present invention, two struts 14 are provided at the edges of the two arc-shaped plates 7; a roller 15 is rotatably connected between the two supporting rods 14; when the extrusion device is used, the upper roller 5 and the lower roller 6 respectively drive the corresponding flexible films 4 to rotate, and the edges of the arc-shaped plates 7 rub the flexible films 4 due to the fact that the arc-shaped plates 7 are attached to the outer sides of the flexible films 4, so that the flexible films 4 are damaged for a long time, solid particles in the flexible films 4 fall out, and the extrusion device fails; therefore, the roller 15 is rotatably connected between the two support rods 14, and the roller 15 applies pressure to the flexible film 4, so that the flexible film 4 at the position is flattened, the upper roller 5 and the lower roller 6 drive the corresponding flexible film 4 to rotate, the roller 15 is driven to rotate, the flexible film 4 enters the arc-shaped plate 7 better, and the friction force between the flexible film 4 and the edge of the arc-shaped plate 7 is reduced.

As an embodiment of the present invention, each of the rollers 15 is provided with six sets of U-shaped bars 16; at least ten U-shaped rods 16 are arranged in each group, and the U-shaped rods 16 are uniformly distributed on the rolling rods 15; when the device is used, after the two flexible films 4 extrude the solution, a part of fibers on the solution can be attached to the outer sides of the flexible films 4, so that when the two flexible films 4 extrude the solution again after rotating for one circle, the original fibers can interfere with the fibers at the moment, and further the fibers on the surface of the solution at the moment can not be compressed; therefore, the flexible membrane 4 is extruded by the roller 15, the roller 15 is driven by the flexible membrane 4 to rotate, and the U-shaped rod 16 is arranged on the roller 15, so that the roller 15 scrapes fibers on the flexible membrane 4 through the U-shaped rod 16 while rotating, and the effect of cleaning the flexible membrane 4 is achieved.

As an embodiment of the present invention, a hollow structure is arranged in each roller 15, an air outlet 151 is arranged on each roller 15, and one end of each roller 15 is communicated with an air inlet pipe 17; the other end of each air inlet pipe 17 is connected to an air pump; when the device is used, the U-shaped rod 16 cannot completely clean the fibers on the flexible membrane 4, and the cleaned fibers can be wrapped on the U-shaped rod 16, so that the U-shaped rod 16 can lose effectiveness after being used for a long time, therefore, the device can discharge air into the hollow structure of the roller rod 15 through the air inlet pipe 17 by the operation of the air pump, so that the air outlet holes 151 can discharge air, when the roller rod 15 controls the U-shaped rod 16 to extrude the flexible membrane 4, the air is discharged through the air outlet holes 151, so that the fibers on the flexible membrane 4 are blown away through the air flow, the cleaning effect on the flexible membrane 4 is achieved, meanwhile, the air flow can blow away the fibers on the U-shaped rod 16, the cleaning of the U-shaped rod 16 is ensured, the using effect of the U-shaped rod 16 is improved, the air flow generated by the air outlet holes 151 can blow away redundant fibers on the extruded melt, and the quality of the melt-blown non-woven fabric is ensured.

As an embodiment of the present invention, an arc-shaped groove is provided on the inner side of each arc-shaped plate 7; a group of round rods 18 are rotationally connected in each arc-shaped groove; at least three round rods 18 are arranged, and bulges are arranged on the round rods 18; when the device is used, after the surface of the melt is extruded by the two flexible films 4 through the solid particles, the gaps among the solid particles are reduced under the action of pressure, so that the solid particles are easy to agglomerate, and the extrusion effect is influenced; therefore, the arc-shaped groove is formed in the inner side of the arc-shaped plate 7, the round rod 18 is rotatably connected in the arc-shaped groove, friction force between the flexible membrane 4 and the arc-shaped plate 7 is reduced, the round rod 18 is provided with the bulge, solid particles in the flexible membrane 4 are extruded through the round rod 18, the solid particles in the flexible membrane 4 are scattered, looseness among the solid particles is guaranteed, and the extrusion effect of the solid particles in the two flexible membranes 4 is improved.

As an embodiment of the invention, the upper roller 5 and the lower roller 6 are respectively provided with a group of elastic plates 19; the number of the elastic plates 19 is at least three, one side of each elastic plate 19 is provided with an elastic sheet 20, and the end part of each elastic plate 19 is provided with a cylinder 21; each cylinder 21 is provided with a V-shaped groove 211; when the extrusion die is used, the extrusion force of solid particles is limited, and the solid particles are easily adhered to the inner wall of the flexible membrane 4, so that the extrusion effect of the solid particles on a melt is influenced; therefore, the elastic cleaning device has the advantages that the cylinder 21 is attached to the inner wall of the flexible film 4 under the elastic force action of the elastic plate 19, the upper roller 5 and the lower roller 6 drive the corresponding flexible film 4 to rotate, so that the cylinder 21 is driven to rub the inner wall of the flexible film 4, the friction force between the cylinder 21 and the flexible film 4 is increased by arranging the V-shaped groove 211 on the cylinder 21, the elastic plate 20 is arranged on one side of the elastic plate 19, so that the elastic force of the elastic plate 19 is increased, the extrusion effect on a melt is increased, and when the cylinder 21 moves to the periphery of the round rod 18, the cleaning effect of the inner wall and the outer wall of the flexible film 4 is better through the extrusion of the cylinder 21 and the round rod 18.

When the device is used, the solution on the mesh belt receiver is pulled to the contact position between the two flexible films 4, the cylinder 13 is controlled to extend, so that the arc-shaped plate 7 is abutted to the outer side of the flexible films 4, the flexible films 4 are extruded through the arc-shaped plate 7, the space inside the flexible films 4 is reduced, the pressure of the contact position of the two flexible films 4 is increased after solid particles inside the flexible films 4 are extruded, the solid particles can fill fibers at the lower part of the solution surface through the flexible films 4 due to the characteristics of the solid particles, the motor 8 is started to drive the gear II 10 to rotate, so that the lower roller 6 is driven to rotate, the gear II 9 is meshed with the gear II 10, the gear II 10 drives the gear I9, so that the upper roller 5 is driven to rotate, the flexible films 4 are respectively sleeved on the upper roller 5 and the lower roller 6, so that the two flexible films 4 extrude the solution surface through the solid particles, the fibers on the surface of the solution are extruded more tightly, the quality of the melt-blown non-woven fabric is improved, the water pump is started, the water inside the arc-shaped cavity 71 is drained through the liquid inlet pipe 72, and then the water inside the arc-shaped cavity 71 is pumped away through the liquid outlet pipe 73, so that the temperature of the arc-shaped plate 7 is reduced, the outer side of the flexible membrane 4 can be cooled due to the contact of the arc-shaped plate 7 and the flexible membrane 4, the solution is cooled through the flexible membrane 4, the solution is formed more quickly, and the efficiency of extruding the solution by the two flexible membranes 4 is improved; the roller 15 is rotatably connected between the two support rods 14, and then the roller 15 applies pressure to the flexible film 4, so that the flexible film 4 at the position is flattened, the upper roller 5 and the lower roller 6 drive the corresponding flexible film 4 to rotate, and the roller 15 is driven to rotate, so that the flexible film 4 can better enter the arc-shaped plate 7, and the friction force between the flexible film 4 and the edge of the arc-shaped plate 7 is reduced; the U-shaped rod 16 is arranged on the roller rod 15, so that the roller rod 15 scrapes off fibers on the flexible film 4 through the U-shaped rod 16 while rotating, and the effect of cleaning the flexible film 4 is achieved; the air pump works, air is discharged into the hollow structure of the roller rod 15 through the air inlet pipe 17, so that air can be discharged from the air outlet hole 151, when the roller rod 15 controls the U-shaped rod 16 to extrude the flexible film 4, air is discharged through the air outlet hole 151, fibers on the flexible film 4 are blown away through air flow, the effect of cleaning the flexible film 4 is achieved, meanwhile, the fibers on the U-shaped rod 16 are blown away through the air flow, the cleaning of the U-shaped rod 16 is guaranteed, the using effect of the U-shaped rod 16 is improved, the redundant fibers on extruded melt can be blown away through the air flow generated by the air outlet hole 151, and the quality of melt-blown non-woven fabric is guaranteed; the arc-shaped groove is formed in the inner side of the arc-shaped plate 7, the round rod 18 is rotationally connected in the arc-shaped groove, so that friction force between the flexible membrane 4 and the arc-shaped plate 7 is reduced, the round rod 18 is provided with the bulge, so that solid particles in the flexible membrane 4 are extruded through the round rod 18, the solid particles in the flexible membrane 4 are scattered, looseness among the solid particles is guaranteed, and the extrusion effect of the solid particles in the two flexible membranes 4 is improved; through the elastic force effect of diving board 19, make the cylinder 21 laminating on the inner wall of flexible membrane 4, make it rotate to go up roller 5 and the flexible membrane 4 that roller 6 drove the correspondence down, thereby it rubs to drive the inner wall of cylinder 21 to flexible membrane 4, through be provided with V-arrangement groove 211 on cylinder 21, thereby the frictional force between cylinder 21 and the flexible membrane 4 has been increased, one side through at diving board 19 is equipped with shell fragment 20, thereby the elasticity of diving board 19 has been increased, thereby the extrusion effect to the fuse-element has been increased, when cylinder 21 moves round bar 18 around, through the extrusion of cylinder 21 and round bar 18, make the inner wall of flexible membrane 4 and outer wall clearance effect better.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.