A melt-blown nonwoven fabric production line

Abstract

This utility model relates to the technical field of meltblown nonwoven fabric production lines, solving the problem that when meltblown fibers are at high temperatures and high viscosity, some fibers adhere to the relatively low-temperature roller surface, causing the fibers to be stretched and broken, affecting product strength and uniformity; or forming deposits on the roller surface, leading to increased adhesion or defects. Specifically, it is a meltblown nonwoven fabric production line, including a nonwoven fabric production line, one end of which is fixedly connected to an equipment frame. A drive motor is fixedly connected to the side of the equipment frame. An upper pressure roller and a lower pressure roller are rotatably connected to the inner side wall of the equipment frame. A bracket is fixedly connected to the side of the equipment frame, and a cleaning assembly is fixedly connected to the side of the bracket. The cleaning assembly includes an air duct fixedly connected to the bottom surface of the bracket. Multiple high-speed fans are fixedly connected to the side of the air duct. A guide channel is connected through the back of the air duct, and a conical air outlet is connected through the bottom surface of the guide channel.

Description

Technical Field

[0001] This utility model relates to the technical field of meltblown nonwoven fabric production line, specifically a meltblown nonwoven fabric production line. Background Technology

[0002] A nonwoven meltblown fabric production line disclosed in CN216615168U includes a worktable with multiple guide rollers at its bottom. Each guide roller has a third rotating shaft fixedly sleeved at both ends. Multiple bearing seats are fixedly connected to the top of the worktable. The sides of the bearing seats that are close to each other are rotatably connected to the sides of the third rotating shafts that are far apart. The sides of the bearing seats that are close to each other are rotatably connected to the ends of the guide rollers via the third rotating shafts. A second support is provided on one side of the worktable, and an upper cooling roller is installed inside the second support. A lower cooling roller is installed at the bottom of the upper cooling roller. The meltblown spun fabric passes between the two cooling rollers.

[0003] It uses upper and lower cooling rollers to roll and squeeze the spinning fibers, which quickly cools and solidifies the fibers, while preventing the fabric from fraying or wrinkling, thus ensuring the quality of subsequent processing and production.

[0004] The technical solution in the prior art has the effect of rapidly cooling the spinning process. However, when the meltblown fiber is at a high temperature and has a high viscosity, some of it will stick to the relatively low temperature roller surface. This will cause the fiber to be stretched and broken, affecting the product strength and uniformity; or it may form deposits on the roller surface, leading to increased adhesion or defects. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a meltblown nonwoven fabric production line that solves the problem that when meltblown fibers are at high temperatures and high viscosity, some fibers will adhere to the relatively low-temperature roller surface, causing the fibers to be stretched and broken, affecting the product strength and uniformity; or forming deposits on the roller surface, leading to increased subsequent adhesion or defects.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a meltblown nonwoven fabric production line, comprising a nonwoven fabric production line, one end of which is fixedly connected to an equipment frame, a drive motor is fixedly connected to the side of the equipment frame, an upper pressure roller and a lower pressure roller are rotatably connected to the inner side wall of the equipment frame, a bracket is fixedly connected to the side of the equipment frame, and a cleaning assembly is fixedly connected to the side of the bracket.

[0007] The cleaning assembly includes an air duct fixedly connected to the bottom surface of the bracket, multiple high-speed fans fixedly connected to the side of the air duct, a guide channel connected through the back of the air duct, and a conical air outlet connected through the bottom surface of the guide channel.

[0008] In one specific embodiment, the plurality of high-speed fans are arranged at equal intervals along the length of the air duct.

[0009] In one specific embodiment, the extension direction of the guide groove is parallel to the axial center line of the upper pressure roller and the axial center line of the lower pressure roller.

[0010] In one specific embodiment, the cross-sectional width of the conical air outlet gradually narrows along the airflow output direction and points towards the roll gap area between the upper and lower pressure rollers.

[0011] In one specific embodiment, the axial length of the conical air outlet covers the working width of the upper pressure roller and the working width of the lower pressure roller.

[0012] In one specific embodiment, the airflow output by the high-speed fan is accelerated in the air duct and then directed to the conical air outlet through the guide groove, forming a high-pressure airflow jet that vertically blows onto the surfaces of the upper pressure roller and the lower pressure roller.

[0013] Compared with the prior art, this utility model provides a meltblown nonwoven fabric production line, which has the following beneficial effects:

[0014] In the technical solution disclosed in this utility model, through the cooperation of a specific structure in the cleaning component fixedly connected to the side of the bracket, the air trough gathers the airflow output from multiple equidistantly distributed high-speed fans and accelerates it inside. Then, it is directionally guided to the conical air outlet through the through-connected guide groove. The conical air outlet compresses the airflow into a high-pressure airflow jet by gradually narrowing the cross-sectional width along the airflow direction. It vertically sprays the surfaces of the upper and lower pressure rollers, so that the meltblown nonwoven fabric removes the sticky fibers attached to the surface in real time during the pressure roller processing, thus preventing the technical defect of fiber accumulation on the pressure roller surface leading to defects.

[0015] With the cleaning component set by this utility model, after the nonwoven fabric production line is fixedly connected to the equipment frame, the upper and lower pressure rollers are driven by the drive motor to rotate for meltblown nonwoven fabric processing. During this process, the cleaning component fixed to the side of the support is started synchronously. The air trough gathers the airflow generated by multiple high-speed fans that are equidistantly distributed along its length and performs primary acceleration. After acceleration, the airflow is directionally guided through the guide groove connected to the back of the air trough. The extension direction of the guide groove is parallel to the axial center line of the upper and lower pressure rollers to ensure accurate airflow delivery direction. The directional airflow then enters the conical air outlet connected to the bottom of the guide groove. The conical air outlet compresses the airflow into a high-pressure airflow jet through a structure in which the cross-sectional width gradually narrows along the airflow output direction. The high-pressure airflow jet vertically sprays the surfaces of the upper and lower pressure rollers and precisely covers the working width of the pressure rollers matched by the axial length of the conical air outlet. At the same time, the high-pressure airflow jet directly points to the roller gap area between the upper and lower pressure rollers, clearing the local adhesion formed by the high-temperature adhesion of meltblown fibers in real time, eliminating the risk of fiber tensile breakage and preventing the formation of roller surface deposits. Attached Figure Description

[0016] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the cleaning component structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the upper and lower pressure rollers of this utility model;

[0020] Figure 4 This is a schematic diagram of the disassembled structure of this utility model.

[0021] In the diagram: 1. Nonwoven fabric production line; 2. Equipment frame; 3. Drive motor; 4. Upper pressure roller; 5. Lower pressure roller; 6. Support; 7. Cleaning assembly; 71. Air duct; 72. High-speed fan; 73. Guide duct; 74. Air outlet. Detailed Implementation

[0022] The following will describe in detail the implementation of this application with reference to the accompanying drawings and embodiments, so that the implementation process of how this application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0023] Figures 1-4As an embodiment of the present invention, a meltblown nonwoven fabric production line includes a nonwoven fabric production line 1, one end of which is fixedly connected to an equipment frame 2. The equipment frame 2 is characterized in that: a drive motor 3 is fixedly connected to the side of the equipment frame 2, an upper pressure roller 4 and a lower pressure roller 5 are rotatably connected to the inner side wall of the equipment frame 2, a bracket 6 is fixedly connected to the side of the equipment frame 2, and a cleaning component 7 is fixedly connected to the side of the bracket 6.

[0024] The specific problem addressed in this embodiment is that when meltblown fibers are at high temperatures and have high viscosity, some fibers adhere to the relatively low-temperature roller surface, causing the fibers to stretch and break, affecting product strength and uniformity; or forming deposits on the roller surface, leading to increased adhesion or defects. This invention utilizes a specific structure in the cleaning assembly 7 fixedly connected to the side of the support 6. The air duct 71 collects airflow from multiple equidistantly distributed high-speed fans 72, accelerates it internally, and then guides it directionally to the conical air outlet 74 via a through-connected guide duct 73. This conical air outlet 74, through a design where the cross-sectional width gradually narrows along the airflow direction, compresses the airflow into a high-pressure air jet, vertically blowing onto the surfaces of the upper pressure roller 4 and the lower pressure roller 5. This allows the meltblown nonwoven fabric to remove adhering adhesive fibers in real time during the pressure roller processing, preventing the technical defect of fiber deposits on the pressure roller surface causing defects.

[0025] The cleaning component 7 includes an air duct 71 fixedly connected to the bottom surface of the support 6. Multiple high-speed fans 72 are fixedly connected to the side of the air duct 71, and a guide duct 73 is connected through the back of the air duct 71. A conical air outlet 74 is connected through the bottom surface of the guide duct 73. In this specific embodiment, the axial length of the conical air outlet 74 covers the working width of the upper pressure roller 4 and the working width of the lower pressure roller 5. After the nonwoven fabric production line 1 is fixedly connected to the equipment frame 2, the upper pressure roller 4 and the lower pressure roller 5 are driven to rotate by the drive motor 3 to process meltblown nonwoven fabric. During this process, the cleaning component 7 fixed to the side of the support 6 starts synchronously. The air duct 71 collects the airflow generated by multiple high-speed fans 72 equidistantly distributed along its length and performs initial acceleration. After acceleration, the airflow is directionally guided through the guide duct 73 connected through the back of the air duct 71. The extension direction of the guide duct 73 is parallel to the axial center line of the upper pressure roller 4 and the lower pressure roller 5 to ensure accurate airflow delivery direction. This directional airflow follows... Then, the air enters the conical air outlet 74 that is connected to the bottom of the guide groove 73. The conical air outlet 74 compresses the airflow into a high-pressure airflow jet through a structure in which the cross-sectional width gradually narrows along the airflow output direction. This high-pressure airflow jet blows vertically onto the surfaces of the upper pressure roller 4 and the lower pressure roller 5 and precisely covers the working width of the pressure roller matched by the axial length of the conical air outlet 74. At the same time, the high-pressure airflow jet points directly to the roller gap area between the upper pressure roller 4 and the lower pressure roller 5, clearing the local adhesion formed by the high-temperature adhesion of meltblown fibers in real time, eliminating the risk of fiber tensile breakage and preventing the formation of accumulation on the roller surface.

[0026] In this specific embodiment, the cross-sectional width of the conical air outlet 74 gradually narrows along the airflow output direction and points towards the roll gap area between the upper pressure roller 4 and the lower pressure roller 5. The structure of the conical air outlet 74, whose cross-sectional width gradually narrows along the airflow output direction, is connected to the bottom surface of the guide groove 73. Its narrowing direction is precisely aligned with the roll gap area between the upper pressure roller 4 and the lower pressure roller 5. When the high-speed airflow enters the conical air outlet 74 with a gradually narrowing cross-section through the guide groove 73, a high-speed focused airflow jet is formed to directly impact the adhesion point of the pressure roller. This structure ensures that the airflow energy is concentrated on the roll gap position where fiber adhesion is most likely to occur. It prevents the technical defects of molten fibers accumulating on the surface of the pressure roller and forming defects through physical peeling, while avoiding the problem of low cleaning efficiency caused by airflow scattering in traditional cleaning devices.

[0027] In this specific embodiment, the axial length of the conical air outlet 74 covers the working width of the upper pressure roller 4 and the lower pressure roller 5. The axial length of the conical air outlet 74 is set to cover the working width of the upper pressure roller 4 and the lower pressure roller 5. Its structure extending along the axial direction of the pressure roller allows the high-pressure airflow to uniformly cover the entire effective working area of ​​the pressure roller. When the guide groove 73 diverts and delivers the airflow to the conical air outlet 74, this full-area coverage design eliminates the risk of local fiber accumulation in the edge area of ​​the pressure roller due to insufficient airflow coverage, thereby ensuring the uniformity of the product's strength across the entire width and preventing the risk of fiber breakage. Combined with the cross-sectional shrinkage characteristics of the conical air outlet 74, it achieves efficient cleaning of the pressure roller surface with zero blind spots.

[0028] Working principle: During the meltblown nonwoven fabric processing process, the upper pressure roller 4 and lower pressure roller 5 are rotated by the drive motor 3. Simultaneously, the cleaning assembly 7, fixed to the side of the support 6, is activated. Multiple high-speed fans 72 generate initial airflow on the side of the air duct 71 and accelerate it for the first time inside the air duct 71. After acceleration, the airflow is guided directionally by the guide groove 73 connected to the back of the air duct 71. The extension direction of the guide groove 73 is parallel to the axial center line of the upper pressure roller 4 and lower pressure roller 5 to ensure accurate axial delivery of the airflow. Subsequently, the airflow enters the conical section connected to the bottom of the guide groove 73. The air outlet 74, with its tapered cross-section structure that gradually narrows along the airflow output direction, compresses the airflow into a high-pressure airflow jet. When this high-pressure airflow jet is sprayed vertically onto the surfaces of the upper pressure roller 4 and the lower pressure roller 5, its tapered cross-section design precisely targets the roller gap area to achieve targeted removal of adhesion points. At the same time, the axial length of the tapered air outlet 74 completely covers the working width of the roller surfaces of the upper pressure roller 4 and the lower pressure roller 5, so that the high-pressure airflow jet acts evenly on the entire width of the pressure roller to eliminate cleaning blind spots. Finally, it continuously peels off the adhered fibers and prevents the formation of deposits during the rotation cycle of the pressure roller.

[0029] The control method of this utility model is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art. The power supply is also common knowledge in the field. Since this utility model is mainly used to protect mechanical devices, the control method and circuit connection will not be explained in detail.

[0030] It should be noted that, in this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A meltblown nonwoven fabric production line, comprising a nonwoven fabric production line (1), one end of which is fixedly connected to an equipment frame (2), characterized in that: The side of the equipment frame (2) is fixedly connected to the drive motor (3), the inner side wall of the equipment frame (2) is rotatably connected to the upper pressure roller (4) and the lower pressure roller (5), the side of the equipment frame (2) is fixedly connected to the bracket (6), and the side of the bracket (6) is fixedly connected to the cleaning assembly (7). The cleaning component (7) includes a wind duct (71) fixedly connected to the bottom surface of the bracket (6), a plurality of high-speed fans (72) fixedly connected to the side of the wind duct (71), a guide duct (73) being connected through the back of the wind duct (71), and a conical air outlet (74) being connected through the bottom surface of the guide duct (73).

2. The meltblown nonwoven fabric production line according to claim 1, characterized in that: The multiple high-speed fans (72) are arranged at equal intervals along the length of the air duct (71).

3. The meltblown nonwoven fabric production line according to claim 1, characterized in that: The extension direction of the guide groove (73) is parallel to the axial center line of the upper pressure roller (4) and the axial center line of the lower pressure roller (5).

4. The meltblown nonwoven fabric production line according to claim 1, characterized in that: The cross-sectional width of the conical air outlet (74) gradually narrows along the airflow output direction and points towards the roll gap area between the upper pressure roller (4) and the lower pressure roller (5).

5. A meltblown nonwoven fabric production line according to claim 1, characterized in that: The axial length of the conical air outlet (74) covers the working width of the upper pressure roller (4) and the working width of the lower pressure roller (5).

6. A meltblown nonwoven fabric production line according to claim 1, characterized in that: The airflow output by the high-speed fan (72) is accelerated in the air trough (71) and then directed to the conical air outlet (74) through the guide groove (73), forming a high-pressure airflow jet that vertically blows the surface of the upper pressure roller (4) and the surface of the lower pressure roller (5).

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