A meltblown fabric production device

Abstract

The present invention discloses a melt-blown cloth production device, including a screw extruder, a feed pipe is provided at the discharge port of the screw extruder, a metering pump is provided on the feed pipe, which is used to measure the flow rate of the melt-blown cloth raw material in the pipeline, a screen changer is provided on the feed pipe between the metering pump and the screw extruder, a filter screen is provided in the screen changer, and the filter screen can filter the impurities mixed in the raw material, and a slot is provided on the screen changer for replacing the filter screen, and a spinneret is provided at the other end of the feed pipe, and a melt-blown cloth receiving mesh belt line is provided below the spinneret, and the melt-blown cloth receiving mesh belt line includes a workbench and a transmission device, and a melt-blown cloth output end of the workbench is provided with a melt-blown cloth winder. The present invention has the characteristics of improving product quality and improving work efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of non-woven fabric materials, and in particular to a melt-blown fabric production device. Technical Background

[0002] The meltblown nonwoven process uses high-speed hot air to stretch the polymer melt stream extruded from the die spinneret to form ultra-fine fibers, which are then sprayed onto a collecting device and bonded to form a nonwoven fabric.

[0003] During the production of meltblown cloth raw materials, a lot of impurities are often mixed in, resulting in poor quality of the final meltblown cloth; in the existing technology of meltblown cloth spinnerets, the spinning speed of the spinneret is slow, resulting in poor quality of spinning, affecting the final production quality of the meltblown cloth; when the spinneret is spinning, the spinning speed will also be different due to the change in the flow rate of the raw material supply, so that the raw materials for the meltblown cloth to be formed on the workbench are unevenly distributed, resulting in poor quality of the meltblown cloth forming; in order to make the produced meltblown cloth meet the medical grade requirements stipulated by the state, it is necessary to add static electricity to the meltblown cloth after production is completed. In the existing technology, the meltblown cloth that is rolled up after production needs to be unfolded and then re-added, which requires a lot of labor costs and is inefficient. Summary of the invention

[0004] In view of the above-mentioned deficiencies in the prior art, the present invention provides a meltblown cloth production device, which has the characteristics of being able to filter impurities in the raw materials, improve the spinning quality of the spinneret, and improve the overall work efficiency.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A meltblown fabric production device comprises a screw extruder, wherein a feed pipe is provided at a discharge port of the screw extruder, a metering pump is provided on the feed pipe for measuring the flow rate of the meltblown fabric raw material in the pipeline, a screen changer is provided on the feed pipe between the metering pump and the screw extruder, a filter screen is provided in the screen changer, the filter screen can filter impurities mixed in the raw material, and a slot is provided on the screen changer for replacing the filter screen, a spinneret is provided at the other end of the feed pipe, a spinneret hole is provided in the spinneret, and blowing molds are provided on both sides of the spinneret hole. The blowing mold is symmetrical and arranged in a "V" shape on both sides of the spinneret hole. An air inlet is arranged on the surface of the spinneret, and the air inlet is connected to the blowing mold. A plurality of mounting holes are arranged on the surface of the spinneret, and a heating rod is arranged in the mounting hole. An air supply pipe is arranged on the air inlet, and an air heating device is arranged at the other end of the air supply pipe to heat the air entering the blowing mold under the action of an air compressor. A melt-blown cloth receiving mesh belt line is arranged under the spinneret, and the melt-blown cloth receiving mesh belt line includes a workbench and a transmission device. A turbine screw lift is provided in the transmission device, the telescopic end of the turbine screw lift passes through the top of the transmission device and is connected to the bottom of the workbench, a pressure-resistant ventilation hose is provided on the side wall of the workbench, one end of the pressure-resistant ventilation hose passes through the side wall of the workbench and extends into the workbench, the other end of the pressure-resistant ventilation hose is connected to a negative pressure fan, a melt-blown cloth output end of the workbench is provided with a melt-blown cloth winder, the melt-blown cloth winder includes a mounting side plate, and an electrostatic generator is provided on the outer wall of the mounting side plate of the melt-blown cloth winder An electrostatic generator bracket is provided on the mounting side plate of the meltblown cloth winding machine, and an electrostatic generator is provided on the electrostatic generator bracket. The electrostatic generator is aimed at the meltblown cloth in the winding machine, and a cutting roller is provided between the mounting side plates. An air knife is provided above the cutting roller, and the air knife is aimed at the cutting roller. A pneumatic guide rail is provided at one end of the air knife, and the moving end of the pneumatic guide rail is connected to the air knife. The pneumatic guide rail is fixed on the mounting side plate, and the air knife can move vertically above the cutting roller with the cooperation of the pneumatic guide rail.

[0007] In order to make the winder cooperate with the meltblown cloth receiving mesh belt line to smoothly wind the meltblown cloth, the meltblown cloth output end of the workbench and the meltblown cloth input end of the winder are on the same straight line in the horizontal direction.

[0008] In order to prevent the contact surface between the meltblown cloth and the winding device from slipping during winding, the surface of the winding device of the winding machine is made of frosted material.

[0009] In order for the static electricity generator to provide the static electricity raw material to the static electricity generator, the static electricity generator is connected to the static electricity generator.

[0010] In order to simplify the operation and improve the integrity of the device, the screw extruder, metering pump, melt-blown cloth receiving mesh belt line, air heating device, heating rod and negative pressure fan are electrically connected to the main control box.

[0011] In order to organize and place the various connecting wires of the entire device, an electrical control box is set up.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. By setting a screen changer on the pipe between the screw extruder and the spinneret, the filter in the screen changer is used to filter the raw materials for the production of the meltblown cloth, thereby improving the production quality of the meltblown cloth, and using the screen changer to achieve the effect of replacing the filter without stopping the machine.

[0014] 2. The blowing mold is set in the spinneret and symmetrically arranged on both sides of the spinneret hole in a "V" shape, so that the blowing mold can use the ejected high-temperature airflow to push the spinneret hole to speed up the speed of ejecting the raw materials, and at the same time use the extrusion of the airflow to increase the quality of the ejected raw materials and improve the quality of the meltblown cloth after molding.

[0015] 3. A pressure-resistant ventilation hose is set on the workbench where the meltblown cloth is formed, and a negative pressure fan is used to blow air through the pressure-resistant ventilation hose to cool the meltblown cloth being formed, thereby increasing the cooling and forming speed of the meltblown cloth and improving the overall work quality.

[0016] 4. A turbine screw lift is set at the bottom of the workbench, and the movement of the turbine screw lift is used to drive the workbench to move up and down. The turbine screw lift is used to adjust the height of the workbench according to different spinneret speeds, so that the meltblown cloth raw materials falling into the workbench are evenly distributed, thereby improving product quality.

[0017] 5. By adding an electrostatic generator to the winder, the meltblown cloth being wound can be directly electrostatically treated, without the need to add additional process flow to add static electricity to the meltblown cloth, which simplifies the production operation steps and improves overall work efficiency.

[0018] 6. Adding a cutting roller and an air knife to the winder can remove tear marks on the meltblown cloth being wound, so that the staff can directly tear off the meltblown cloth of appropriate length from the meltblown cloth roll when producing masks, which is convenient for the staff to operate and improve the overall work efficiency.

[0019] 7. The surface of the winding device of the winder is set to frosted material to increase the friction between the winding device and the contact surface of the meltblown cloth, prevent the meltblown cloth from slipping on the winding device during winding, and cause damage to the meltblown cloth during winding, thereby improving the final production quality of the meltblown cloth. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of an embodiment of the present invention;

[0021] Figure 2 for Figure 1 The structural schematic diagram of the meltblown cloth receiving mesh belt line shown;

[0022] Figure 3 for Figure 1 The schematic diagram of the structure of the meltblown cloth receiving mesh belt line connected to the negative pressure fan;

[0023] Figure 4 for Figure 1 The structural schematic diagram of the spinneret shown;

[0024] Figure 5 is a cross-sectional view of the spinneret;

[0025] Figure 6 for Figure 1 A top view of the meltblown fabric winder shown;

[0026] Figure 7 It is a cross-sectional view of a meltblown fabric winding machine;

[0027] In the figure: 1-screw extruder; 2-melt-blown cloth receiving mesh belt line; 3-melt-blown cloth winder; 4-feeding pipe; 5-metering pump; 6-screen changer; 7-spinneret; 8-spinneret hole; 9-blowing mold; 10-air inlet; 11-mounting hole; 12-heating rod; 13-master control box; 14-electric control box; 15-mesh belt; 16-rotating handle; 701-air pipe; 702-air heating device; 703-air compressor; 201-workbench; 202-transmission device; 203-turbine screw lifter; 204-pressure ventilation hose; 205-negative pressure fan; 301-mounting side panel; 302-static generator bracket; 303-static generator; 304-cutter roller; 305-air knife; 306-pneumatic guide rail; 307-static generator. Specific implementation plan

[0028] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments shown herein. On the contrary, the purpose of providing these embodiments is to understand the disclosure of the present invention more comprehensively and thoroughly.

[0029] It should be noted that when an element is referred to as being "provided with", it can be placed directly on another element or there can be an element centered. The terms "top", "bottom" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in the specification of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0031] like Figure 1 FIG. 1 is a schematic diagram of a preferred embodiment of the present invention.

[0032] A meltblown fabric production device comprises a screw extruder 1, wherein a feed pipe 4 is provided at the discharge port of the screw extruder 1, and a metering pump 5 is provided on the feed pipe 4 for measuring the flow rate of the meltblown fabric raw material in the pipeline, and a screen changer 6 is provided on the feed pipe 4 between the metering pump 5 and the screw extruder 1, wherein a filter screen is provided in the screen changer 6, and the filter screen can filter impurities mixed in the raw material, and a slot is provided on the screen changer 6 for replacing the filter screen, and a spinneret 7 is provided at the other end of the feed pipe 4, wherein a spinneret hole 8 is provided in the spinneret 7, and a blow mold 9 is provided on both sides of the spinneret hole 8, and the blow mold 9 is symmetrical and is in a "V" shape on both sides of the spinneret hole 8 The spinneret 7 is provided with an air inlet 10 on its surface, and the air inlet 10 is communicated with the blowing mold 9. The spinneret 7 is provided with a plurality of mounting holes 11 on its surface, and a heating rod 12 is provided in the mounting hole 11. The air inlet 10 is provided with an air pipe 701, and the other end of the air pipe 701 is provided with an air heating device 702 for heating the air entering the blowing mold 9 under the action of an air compressor 703. A meltblown cloth receiving mesh belt line 2 is provided below the spinneret 7, and the meltblown cloth receiving mesh belt line 2 includes a workbench 201 and a transmission device 202. A turbine screw lift 203 is provided in the transmission device. The telescopic end of the wheel screw lift 203 passes through the top of the transmission device 202 and is connected to the bottom of the workbench 201. A pressure-resistant ventilation hose 204 is provided on the side wall of the workbench 201. One end of the pressure-resistant ventilation hose 204 passes through the side wall of the workbench 201 and extends into the workbench 201. The other end of the pressure-resistant ventilation hose 204 is connected to a negative pressure fan 205. A melt-blown cloth output end of the workbench 201 is provided with a melt-blown cloth winder 3. The melt-blown cloth winder 3 includes a mounting side plate 301. An electrostatic generator 307 is provided on the outer wall of the mounting side plate 301 of the melt-blown cloth winder 3. An electrostatic generator bracket 302 is provided with an electrostatic generator 303, and the electrostatic generator 303 is aligned with the meltblown cloth in the winder. A cutting roller 304 is provided between the mounting side plates 301, and an air knife 305 is provided above the cutting roller 304. The air knife 305 is aligned with the cutting roller 304. A pneumatic guide rail 306 is provided at one end of the air knife 305, and the moving end of the pneumatic guide rail 306 is connected to the air knife 305. The pneumatic guide rail 306 is fixed on the mounting side plate 301. The air knife 305 can move vertically above the cutting roller 304 with the cooperation of the pneumatic guide rail 306.

[0033] In order to make the meltblown fabric winder 3 cooperate with the meltblown fabric receiving mesh belt line 2 to smoothly wind up the meltblown fabric, the meltblown fabric output end of the workbench and the meltblown fabric input end of the winder are on the same straight line in the horizontal direction.

[0034] In order to prevent the contact surface between the meltblown fabric and the winding device of the meltblown fabric winding machine 3 from slipping during winding, the surface of the winding device of the meltblown fabric winding machine 3 is made of frosted material.

[0035] In order for the static electricity generator 307 to provide static electricity raw materials for the static electricity generator 303 , the static electricity generator 303 is connected to the static electricity generator 307 .

[0036] In order to simplify the operation and improve the integrity of the device, the screw extruder 1, the metering pump 5, the melt-blown cloth receiving mesh belt line 2, the air heating device 702, the heating rod 12 and the negative pressure fan 205 are electrically connected to the main control box 13.

[0037] In order to organize and place various connection lines of the entire device, an electric control box 14 is provided.

[0038] In a normal production process, the raw material is added to the screw extruder 1 through the feed port. After the screw extruder 1 processes the raw material, it enters the spinneret 7 under the filtration of the screen changer 6. The heating rod 12 on the spinneret 7 heats the raw material. The raw material falls into the mesh belt 15 of the workbench through the spinneret hole 8 in the spinneret 7 to be formed. After cooling and forming, the mesh belt 15 is driven by the active roller and the driven roller in the workbench 201 to transport the formed meltblown cloth to the meltblown cloth output end of the workbench 201. The meltblown cloth enters the meltblown cloth winder 3 after passing through the meltblown cloth output end, and passes through the electrostatic generator 303 driven by the transition transmission roller of the meltblown cloth winder 3. At the same time, the electrostatic generator 303 attaches static electricity to the meltblown cloth. When the meltblown cloth passes through the cutting knife roller 304, the air knife 305 partially cuts the meltblown cloth, and finally enters the winding device of the meltblown cloth winder for winding.

[0039] In a normal production process, the air compressor heats the air through the air heating device 702 and then delivers it to the blowing mold 9 of the spinneret 7. With the cooperation of the blowing molds 9 on the left and right sides, the high-speed airflow in the blowing mold 9 is in a "V" shape, and the airflow is coordinated with the spinneret hole 8 during spinning, thereby accelerating the spinning speed of the spinneret 7 and improving the spinning quality by using the airflow to extrude the spinneret raw materials.

[0040] During normal production, the negative pressure fan 205 blows air to the meltblown cloth being cooled in the workbench 201 through the pressure-resistant ventilation hose 204, thereby accelerating the air circulation in the workbench and speeding up the cooling and forming speed of the meltblown cloth.

[0041] During normal production, the staff adjusts the height of the workbench 201 by using the rotating handle 16 of the turbine screw lift 203 according to the spinning speed of the spinneret 7. If the spinning speed is fast, the staff lowers the height of the workbench by using the rotating handle 16. If the spinning speed is slow, the staff raises the height of the workbench 201 by using the rotating handle 16 so that the workbench is close to the spinneret 7 and the raw materials are evenly distributed on the workbench 201.

[0042] The above-mentioned examples only express a factual mode of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the invention patent. It should be pointed out that for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the attached claims.

Claims

1. A meltblown fabric production device, comprising a screw extruder (1), characterized in that: The screw extruder (1) is provided with a feed pipe (4) at the discharge port, a metering pump (5) is provided on the feed pipe (4), a screen changer (6) is provided on the feed pipe (4) between the metering pump (5) and the screw extruder (1), a spinneret (7) is provided at the other end of the feed pipe (4), a spinneret hole (8) is provided in the spinneret (7), a blow mold (9) is provided on both sides of the spinneret hole (8), an air inlet (10) is provided on the surface of the spinneret (7), the air inlet (10) is connected to the blow mold (9), a mounting hole (11) is provided on the surface of the spinneret (7), a heating rod (12) is provided in the mounting hole (11), an air supply pipe (701) is provided on the air inlet (10), and the air supply pipe An air heating device (702) is provided at the other end of the air delivery pipe (701), a meltblown cloth receiving mesh belt line (2) is provided below the spinneret (7), the meltblown cloth receiving mesh belt line (2) comprises a workbench (201) and a transmission device (202), a turbine screw lift (203) is provided inside the transmission device (202), a telescopic end of the turbine screw lift (203) is connected to the bottom of the workbench (201), a rotating handle (16) of the turbine screw lift (203) is provided on the outer wall of the transmission device (202), and the height of the workbench (201) is adjusted by rotating the rotating handle (16) of the turbine screw lift (203), thereby controlling the spinning speed of the spinneret (7); A pressure-resistant ventilation hose (204) is provided on the side wall of the workbench (201), one end of the pressure-resistant ventilation hose (204) penetrates the side wall of the workbench (201) and extends into the workbench (201), and the other end of the pressure-resistant ventilation hose (204) is connected to a negative pressure blower (205). A melt-blown fabric winding machine (3) is provided at the melt-blown fabric output end of the workbench (201), and the melt-blown fabric winding machine (3) comprises a mounting side plate (301). An electrostatic generator (307) is provided on the outer wall of the mounting side plate (301) of the melt-blown fabric winding machine (3). ), an electrostatic generator bracket (302) is provided on the mounting side plate (301) of the meltblown fabric winder (3), an electrostatic generator bracket (302) is provided on the electrostatic generator bracket (302), a cutting roller (304) is provided between the mounting side plates (301), an air knife (305) is provided above the cutting roller (304), one end of the air knife (305) is provided with a pneumatic guide rail (306), a movable end of the pneumatic guide rail (306) is connected to the air knife (305), and the pneumatic guide rail (306) is fixed on the mounting side plate (301); The meltblown fabric output end of the workbench (201) and the meltblown fabric input end of the winder (3) are located on the same straight line in the horizontal direction; The surface of the winding device of the winding machine (3) is made of frosted material; The electrostatic generator (303) is connected to the electrostatic generator (307); Two air blowing dies (9) are arranged in the spinneret (7). The air blowing dies (9) are symmetrically arranged in a "V" shape on both sides of the spinneret hole (8). Two air inlets (10) are provided corresponding to the air blowing dies (9).

2. A meltblown fabric production device according to claim 1, characterized in that: The screw extruder (1), metering pump (5), meltblown cloth receiving mesh belt line (2), air heating device (702), heating rod (12) and negative pressure fan (205) are electrically connected to a main control box (13).

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