A fast-packing fiber compaction and filling device and compaction and filling method

Abstract

The present invention relates to a compacting and filling device and method for rapidly packaged fibrils, belonging to the technical field of fibril production. The device comprises: a material box conveying mechanism, comprising a mounting bracket and a conveyor belt for conveying the material box; a filling mechanism, comprising a linear conveying module connected to the side end of the mounting bracket, a slide connected to the output end of the linear conveying module, and a filling assembly connected by the slide, wherein the linear conveying module is arranged along the length direction of the mounting bracket; the filling assembly comprises a material barrel for holding material and a spiral pushing portion arranged inside the material barrel, wherein the material barrel is provided with a material inlet and a material outlet, wherein the spiral pushing portion comprises a rotatable shaft and a spiral plate connected to the end of the shaft, wherein the spiral plate corresponds to the position of the material outlet. The present invention can ensure the uniform distribution and compaction effect of the material in the material box, ensure the uniform distribution of the internal material during the compaction process, and avoid rapid rebound after compaction caused by unevenness.

Description

Technical Field

[0001] The invention relates to the technical field of fibrid production, in particular to a fibrid compacting and filling device and a compacting and filling method capable of rapid packaging. Background Art

[0002] Aramid fibrid is a high-performance fiber with excellent mechanical properties, chemical stability, flame retardancy, outstanding high-temperature resistance and insulation properties. It is a key raw material for the production of aramid paper. In the production and packaging process of fibrid, fiber compaction and loading are one of the key links. Traditional fibrid loading equipment mostly adopts a single loading or compaction method. Due to the limitations of the equipment structure design, the fibers are often difficult to be evenly distributed in the material box during the loading process, resulting in excessive accumulation in the middle and insufficient loading on both sides. In the subsequent compaction process, the fibers in the middle are prone to rebound due to the concentrated compaction force, affecting the packaging quality of the finished product. In addition, existing equipment generally adopts a single compaction method, that is, after loading the material in one place, it moves to the other side for compaction, causing the material to rebound during the movement, thereby affecting the packaging volume.

[0003] Therefore, there is an urgent need to design a fiber loading device that is highly practical, can load evenly and compact efficiently. Summary of the Invention

[0004] The object of the present invention is to provide a device and method for compacting and filling fibrids that can be quickly packaged, which can at least partially solve the technical problems mentioned in the above background technology.

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

[0006] A first aspect of the present invention provides a fiber compacting and filling device that can be quickly packaged, including a material box conveying mechanism and a filling mechanism, the material box conveying mechanism including a mounting bracket and a conveyor belt connected to the top of the mounting bracket, the conveyor belt being used for material box conveying; the filling mechanism including a linear conveying module connected to the side end of the mounting bracket, a slide connected to the output end of the linear conveying module, and a filling assembly connected through the slide, the linear conveying module being arranged along the length direction of the mounting bracket; the filling assembly including a material barrel for holding material and a spiral pushing part arranged inside the material barrel, the material barrel being provided with a material inlet and a material outlet, the spiral pushing part including a rotatable rotating shaft and a spiral plate connected to the end of the rotating shaft, the spiral plate corresponding to the position of the material outlet.

[0007] In a preferred embodiment, the slide includes a module connection end that cooperates with the linear conveying module, a support leg, and a connecting frame connected to the top of the support leg. The connecting frame extends from the support leg position toward the direction of the conveyor belt, and is provided with a fixing portion for fixing the filler assembly at a position corresponding to the conveyor belt.

[0008] In a preferred embodiment, the material outlet is formed by two oppositely disposed protrusions and two oppositely disposed recesses. The recesses facilitate the expansion of the material toward both sides, causing the fibrils in the middle of the material barrel to expand more slowly than those on the sides. Consequently, after the material falls into the material box, it collapses toward both sides, resulting in a more even distribution within the box.

[0009] In a preferred embodiment, the recessed portion is positioned perpendicular to the driving direction of the linear conveyor module. This allows the linear conveyor module to drive the material barrel back and forth, promoting uniform distribution of the material in the X-axis direction within the material bin. Furthermore, the two vertically positioned recessed portions promote uniform distribution of the material in the Y-axis direction within the material bin.

[0010] In a preferred embodiment, the packing assembly further includes a material dispersing unit disposed within the material barrel, the material dispersing unit being configured as a stirring paddle connected to the rotating shaft. The material dispersing unit can disperse clumped fibrids within the material barrel, thereby avoiding uneven compaction caused by uneven fibrids.

[0011] In a preferred embodiment, the stirring paddle is provided with at least three groups of stirring blades or stirring rods.

[0012] In a preferred embodiment, the fibrid compacting and filling device further comprises a compacting mechanism connected to the filling mechanism, the compacting mechanism comprising pressing blocks distributed on both sides of the material outlet, the pressing blocks being configured to be capable of reciprocating motion in the vertical direction.

[0013] In a preferred embodiment, two sliders are slidably connected between the two groups of pressing blocks, and the two sliders are elastically connected to each other. By providing the sliders, a flat compacting structure can be formed with the pressing blocks, thereby improving the compacting effect.

[0014] In a preferred embodiment, the upper surface of the slider is inclined, with the upper surface facing the material barrel at a lower height than the upper surface facing away from the material barrel. This inclination serves as a guide for the slider, facilitating relative movement between the slider and the material outlet of the material barrel.

[0015] A second aspect of the present invention provides a method for compacting and packing fibrids that can be quickly packaged, using the above-mentioned fibrid compacting and packing device, comprising the following steps:

[0016] S1, transporting the material box to a position corresponding to the filler assembly;

[0017] S2, the pressing block and the slide block move upward until the material outlet of the material barrel is exposed under the slide block;

[0018] S3, discharge the material into the material box through the material outlet;

[0019] S4, starting the linear conveying module to drive the material barrel to reciprocate within the corresponding range of the material box, so that the discharged fibrils are evenly discharged into the interior of the material box;

[0020] S5, the pressing block and the slider move downward to compact the fibrils inside the material box;

[0021] Repeat steps S2-S5 until the filling and compaction of the material box is completed.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1. The fibrid compaction and loading device and method provided by the present invention ensure uniform distribution of material within the material box by providing a linear conveying module in the X-direction to control the reciprocating motion of the material barrel and by providing a specially structured recessed material opening in the Y-direction, thereby avoiding compaction rebound caused by uneven distribution.

[0024] 2. Through the clever cooperation of the pressing block and the slider in the compacting mechanism, the material in the material box can be effectively compacted without hindering the discharge of the material;

[0025] 3. By setting up structural details such as the material breaking up part and the spiral pushing part, the precipitated fibers can be evenly squeezed during discharge, and the clumped fibers can be broken up at the same time to ensure uniform distribution of the internal materials during the compaction process, avoiding rapid rebound after compaction caused by uneven materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 Schematic diagram of the overall structure of a device for compacting and filling fibrils capable of rapid packaging according to an embodiment of the present invention;

[0027] Figure 2 This is a schematic diagram of the structure of the packing mechanism and the compacting mechanism in the embodiment of the present invention;

[0028] Figure 3 Schematic diagram of the structure of the packing mechanism in an embodiment of the present invention.

[0029] The meaning of each number in the figure is:

[0030] 1. Material box conveying mechanism; 11. Mounting bracket; 12. Conveyor belt;

[0031] 2. Filling mechanism; 21. Linear conveying module; 22. Slide; 221. Module connection end; 222. Support leg; 223. Connecting frame; 224. Fixing portion; 23. Filling assembly; 231. Material barrel; 232. Material inlet; 233. Material outlet; 2331. Protrusion; 2332. Recessed portion; 234. Rotating shaft; 235. Screw plate; 236. Drive motor; 237. Agitator;

[0032] 3. Compacting mechanism; 31. Pressing block; 32. Lifting drive member; 33. Slider; 34. Connecting plate; 35. Elastic member. DETAILED DESCRIPTION

[0033] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0034] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0035] Example 1

[0036] See also Figure 1-Figure 3 This embodiment discloses a device for compacting and filling fibrides capable of rapid packaging, comprising a material box conveying mechanism 1 and a filling mechanism 2. The material box conveying mechanism 1 is used to convey the material box, and the filling mechanism 2 is used to fill the material box with material. The material box conveying mechanism 1 conveys an empty material box. When the empty material box is transported to the position corresponding to the filling mechanism 2, the filling mechanism 2 fills the empty material box with material. The fully loaded material box is then conveyed by the material box conveying mechanism 1 to the next process.

[0037] Specifically, the material box conveying mechanism 1 includes a mounting bracket 11 and a conveyor belt 12 connected to the top of the mounting bracket 11. During operation, the material box is placed on the conveyor belt 12, and the conveyor belt 12 drives the material box to move.

[0038] The filling mechanism 2 includes a linear conveying module 21 fixedly connected to a side end of the mounting bracket 11 , a slide 22 connected to an output end of the linear conveying module 21 , and a filling assembly 23 connected via the slide 22 .

[0039] In this embodiment, the linear conveying module 21 is arranged along the length direction of the mounting bracket 11 , that is, its arrangement direction is consistent with the conveying direction of the conveyor belt. The linear conveying module 21 adopts the linear conveying structure in the prior art.

[0040] The slide 22 further includes a module connection end 221 that cooperates with the linear conveying module 21, a support leg 222, and a connecting frame 223 connected to the top of the support leg 222. The connecting frame 223 is used to connect the filler assembly 23. Specifically, the support leg 222 has a predetermined height and is fixedly connected to the module connection end 221. The connection method can be welding, clamping, bolting, etc. The support leg 222 can support the connecting frame 223 to a predetermined height, facilitating the filling assembly 23 to release materials into the material box. The connecting frame 223 is fixedly connected to the top of the support leg 222. The connecting frame 223 extends from the position of the support leg 222 toward the conveyor belt 12 and is provided with a fixing portion 224 for fixing the filler assembly 23 at a position corresponding to the conveyor belt 12.

[0041] The filling assembly 23 includes a material barrel 231 for holding materials, and the material barrel 231 is fixed by a fixing portion 224. Specifically, in this embodiment, the main body of the material barrel 231 is roughly constructed in a cylindrical shape, and correspondingly, the fixing portion 224 is constructed as an annular bracket that is adapted to the outer shape of the material barrel 231. The inner diameter of the annular bracket corresponds to the outer diameter of the material barrel 231. In order to ensure the stable setting of the material barrel 231, a hanging edge is fixedly provided along the circumferential direction on the outer edge of the material barrel 231, and the material barrel 231 is hung on the annular bracket through the hanging edge.

[0042] like Figure 3 As shown, the material barrel 231 has a material inlet 232 at its side and a material outlet 233 at its bottom. Specifically, the material inlet 232 is constructed as an opening located at the upper end of the material barrel 231 and extending laterally. The end of this opening, remote from the material barrel 231, is connected to the material supply line via a rubber pipe. The material outlet 233 is located at the bottom of the material barrel 231 and has a bottle mouth structure that gradually narrows from the barrel body toward the bottom.

[0043] Furthermore, the filler assembly 23 also includes a spiral pusher disposed inside the material barrel 231, which can push the material in the material barrel 231 toward the bottle mouth through the spiral pusher, thereby facilitating the discharge of the material. Specifically, the spiral pusher includes a rotatable shaft 234 disposed inside the material barrel 231 and a spiral plate 235 fixedly connected to the end of the shaft 234, and the spiral plate 235 corresponds to the position of the material outlet 233. In this embodiment, the spiral pusher also includes a drive motor 236 disposed at the top of the material barrel 231, and the shaft 234 is connected to the output end of the drive motor 236. The shaft 234 passes through the top surface of the material barrel 231 and is rotatably connected to the top surface via a bearing. The matching structure of the shaft 234 and the material barrel 231 is prior art. When the fibrid enters the material barrel 231 , the drive motor 236 drives the rotating shaft 234 to rotate, thereby driving the spiral plate 235 to rotate. The rotating spiral plate 235 squeezes the fibrid downward, thereby pushing the material out of the material outlet 233 .

[0044] In actual application, when the material box moves to the bottom of the material barrel 231, the external feeding device feeds the precipitated fibers into the material barrel 231 through the material supply pipeline and the material inlet 232. Under the push of the spiral pushing part, the material is discharged into the material box through the material outlet 233. At the same time, the linear conveying module 21 drives the slide 22 to drive the material barrel 231 to reciprocate within the corresponding range of the material box, so that the discharged precipitated fibers are evenly discharged into the front and back sides of the material box, thereby avoiding the problem of excessive accumulation in the middle due to uneven distribution of precipitated fibers and rebound after compaction.

[0045] Example 2

[0046] The fast-packing fibrid compacting and filling device provided in this embodiment has substantially the same structure as that of the first embodiment. Therefore, for the sake of brevity, only the differences are described in detail herein.

[0047] See also Figure 2 In this embodiment, the material outlet 233 of the material barrel 231 is constructed as follows: it includes two oppositely arranged protrusions 2331, the protrusions 2331 are configured to be an arc-shaped protruding structure toward the conveyor belt 12, and a recessed portion 2332 is formed between the two protrusions 2331, and the recessed portion 2332 is configured to be an arc-shaped inward concave structure in the direction away from the conveyor belt 12, that is, the material outlet 233 is surrounded by two oppositely arranged protrusions 2331 and two oppositely arranged recessed portions 2332.

[0048] When the fibrid material is discharged through the material outlet 233, the material corresponding to the recessed portions 2332 on both sides will first expand toward the sides, while the fibrid material corresponding to the middle portion of the material barrel 231 will expand slower than the fibrid material on both sides. As a result, the material will collapse toward both sides of the material box after falling into the material box, thereby being more evenly distributed inside the material box, which is beneficial for subsequent compaction and reduces rebound.

[0049] It should be noted that in this embodiment, the orientation of the two protrusions 2331 is consistent with the drive direction of the linear conveyor module 21. If the drive direction of the linear conveyor module 21 is defined as the X-direction, the two recessed portions 2332 are positioned in the Y-direction. Furthermore, when loading material into the material bin, the linear conveyor module 21 drives the material barrel 231 to reciprocate in the X-direction, promoting uniform distribution of the material within the bin. Furthermore, the two recessed portions 2332 positioned in the Y-direction further promote uniform distribution of the material within the bin. These two combined forces enhance the overall uniformity of material distribution within the bin.

[0050] Example 3

[0051] The fast-packing fibrid compacting and filling device provided in this embodiment has substantially the same structure as that of the first embodiment. Therefore, for the sake of brevity, only the differences are described in detail herein.

[0052] like Figure 3 As shown, in this embodiment, the filler assembly 23 further includes a material breaking up portion arranged inside the material barrel 231. Specifically, the material breaking up portion is constructed as a stirring paddle 237 fixedly connected to the middle or lower middle portion of the rotating shaft 234. The stirring paddle 237 is provided with at least three groups of stirring blades or stirring rods. The stirring paddle 237 can break up the clumped precipitated fibers inside the material barrel 231 during the rotation of the rotating shaft 234, thereby avoiding the problem of uneven compaction caused by uneven precipitated fibers.

[0053] Example 4

[0054] The fast-packing fibrid compacting and filling device provided in this embodiment has substantially the same structure as that of the first embodiment. Therefore, for the sake of brevity, only the differences are described in detail herein.

[0055] See also Figure 1 and Figure 2The fast-packing fibrid compacting and filling device provided in this embodiment also includes a compacting mechanism 3, which is connected to the fixed portion 224 of the filling mechanism 2 and includes two sets of pressing blocks 31, respectively located on either side of the material outlet 233. The two sets of pressing blocks 31 are configured to reciprocate vertically to compact the fibrids in the material box. It should be noted that the spacing between the two sets of pressing blocks 31 should be greater than the diameter of the material outlet 233 to prevent obstruction of material discharge, and the specifications of the two sets of pressing blocks 31 should be adapted to the material box to achieve a good compaction effect.

[0056] Specifically, the compacting mechanism 3 also includes a lifting drive member 32 for driving the two groups of pressure blocks 31 to perform lifting movements. The lifting drive member 32 is fixedly connected to both sides of the fixed portion 224 through a fixed plate, and the pressure blocks 31 are connected to the output end of the lifting drive member 32. Exemplarily, the lifting drive member 32 can adopt a linear drive structure such as a cylinder, a hydraulic push rod, or an electric push rod.

[0057] To further enhance the compaction effect, in this embodiment, two symmetrically arranged sliders 33 are slidably connected between the two sets of pressure blocks 31. The two pressure blocks 31 and the two sliders 33 can be combined to form a complete planar structure. Specifically, the two pressure blocks 31 are constructed as guide rails on opposite sides, and the mating ends of the sliders 33 are correspondingly constructed as slots that adapt to the guide rails. Through the cooperation of the guide rails and slots, the sliders 33 are slidably connected to the pressure blocks 31. Consequently, the two pressure blocks 31 can drive the sliders 33 to rise and fall synchronously.

[0058] To prevent the slider 33 from obstructing the discharge of the material, in this embodiment, the two sliders 33 are elastically connected. Specifically, the top ends of the two sliders 33 are fixedly connected with connecting plates 34, which are distributed along the X direction. The two ends of the connecting plates 34 extend to the positions of the pressure blocks 31 on both sides, respectively. Two elastic members 35 are fixedly connected between the two connecting plates 34, and the two elastic members 35 correspond to the positions of the two pressure blocks 31, respectively. For example, the elastic member 35 can adopt an elastic structure such as a spring or a compression spring.

[0059] Furthermore, the upper surface of the slider 33 is tilted, and the height of the upper surface on the side facing the material barrel 231 is lower than the height of the upper surface on the side away from the material barrel 231 .

[0060] In the pressing state, the two sliders 33 are closed. When discharge is required, the lifting drive 32 is activated to move the pressing block 31 upward. As the pressing block 31 moves upward, the upper surface of the slider 33 abuts the material outlet 233 of the material barrel 231, causing the two sliders 33 to gradually move in opposite directions. Simultaneously, the elastic member 35 is stretched and deformed to store energy. As the slider 33 moves outward, the material outlet 233 is exposed to the underside of the slider 33, allowing discharge to occur. After discharge is completed, the lifting drive 32 is activated to slowly move the pressing block 31 downward. After the slider 33 disengages from the material outlet 233, the elastic member 35 rebounds and pulls the slider 33 toward the center, causing the two sliders 33 to close again and form a complete plane with the pressing block 31. As the lifting drive 32 advances, it compacts the fibrids within the material bin. This cycle allows the filling and compaction processes to be completed quickly at the same location, thereby reducing the time the fibers spend traveling between the discharge ports and the amount of fibrid rebound.

[0061] Example 5

[0062] Based on the fibrid compacting and packing device provided in the fourth embodiment, this embodiment provides a fibrid compacting and packing method capable of rapid packaging, comprising the following steps:

[0063] S1, placing the material box on the conveyor belt 12, and transporting it to the position corresponding to the filler assembly 23 through the conveyor belt 12;

[0064] S2, start the lifting drive 32 to move the pressing block 31 and the slider 33 upward, and at the same time expose the material outlet 233 of the material barrel 231 below the slider 33;

[0065] S3, the external feeding device feeds material into the material barrel 231, starts the drive motor 236, the material scattering part scatters the material, and the spiral pushing part pushes the material downward, and the material is discharged into the material box through the material outlet 233;

[0066] S4, starting the linear conveying module 21, driving the slide 22 to drive the material barrel 231 to reciprocate within the corresponding range of the material box, so that the discharged fibrils are evenly discharged into the interior of the material box;

[0067] S5, starting the lifting drive 32 to move the pressing block 31 and the slider 33 downward to compact the fibrils inside the material box;

[0068] Repeat steps S2-S5 until the filling and compaction of the material box is completed.

[0069] The fibrillation compaction and filling device and the fibrillation compaction and filling method provided by the present invention can, on the one hand, ensure uniform distribution of the material in the material box by controlling the reciprocating motion of the material barrel 231 by arranging a linear conveying module 21 in the X direction and by arranging a material opening in the Y direction with a specially structured recessed portion 2332, thereby avoiding compaction rebound caused by uneven distribution. On the other hand, the ingenious arrangement of the compacting mechanism 3 can achieve compaction of the material in the material box without hindering the discharge of the material. At the same time, the structural details such as the material breaking up portion and the spiral pushing portion can also uniformly squeeze the fibrillation during discharge and break up agglomerated fibers, thereby ensuring uniform distribution of the internal material during the compaction process and avoiding rapid rebound after compaction caused by uneven distribution.

[0070] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for compacting and filling fiber that can be quickly packaged, characterized in that: include: A material box conveying mechanism (1) comprises a mounting bracket (11) and a conveyor belt (12) connected to the top of the mounting bracket (11), wherein the conveyor belt (12) is used for conveying the material box; A filling mechanism (2) comprises a linear conveying module (21) connected to a side end of a mounting bracket (11), a slide (22) connected to an output end of the linear conveying module (21), and a filling assembly (23) connected via the slide (22), wherein the linear conveying module (21) is arranged along the length direction of the mounting bracket (11); The filler assembly (23) includes a material barrel (231) for containing material and a spiral pushing portion arranged inside the material barrel (231), the material barrel (231) is provided with a material inlet (232) and a material outlet (233), the spiral pushing portion includes a rotatable shaft (234) and a spiral plate (235) connected to the end of the shaft (234), the spiral plate (235) corresponding to the position of the material outlet (233); the material outlet (233) is formed by two oppositely arranged protrusions (2331) and two oppositely arranged recesses (2332), and the arrangement orientation of the recesses (2332) is perpendicular to the driving direction of the linear conveying module (21); The invention also includes a compacting mechanism (3) connected to the filling mechanism (2), wherein the compacting mechanism (3) includes pressing blocks (31) distributed on both sides of the material outlet (233), and the pressing blocks (31) are configured to be capable of reciprocating motion in the vertical direction; two groups of pressing blocks (31) are slidably connected to each other with two sliders (33), and the two sliders (33) are elastically connected to each other.

2. The fast-packing fiber compacting and filling device according to claim 1, characterized in that: The slide (22) includes a module connecting end (221) that cooperates with the linear conveying module (21), a support leg (222), and a connecting frame (223) connected to the top of the support leg (222). The connecting frame (223) extends from the position of the support leg (222) in the direction of the conveyor belt (12) and is provided with a fixing portion (224) for fixing the filler assembly (23) at a position corresponding to the conveyor belt (12).

3. The fast-packing fibrid compacting and filling device according to claim 1, characterized in that: The filler assembly (23) further includes a material scattering portion disposed inside the material barrel (231), and the material scattering portion is constructed as a stirring paddle (237) connected to the rotating shaft (234).

4. The fast-packing fibrid compacting and filling device according to claim 3, characterized in that: The stirring paddle (237) is provided with at least three groups of stirring blades or stirring rods.

5. The fast-packing fibrid compacting and filling device according to claim 1, characterized in that: The upper surface of the slider (33) is inclined, and the height of the upper surface on the side facing the material barrel (231) is lower than the height of the upper surface on the side away from the material barrel (231).

6. A method for compacting and packing fibrids that can be quickly packaged, using the fibrid compacting and packing device according to claim 1, comprising the following steps: S1, transporting the material box to a position corresponding to the filler assembly (23); S2, the pressing block (31) and the slider (33) move upward until the material outlet (233) of the material barrel (231) is exposed below the slider (33); S3, discharging the material into the material box through the material outlet (233); S4, starting the linear conveying module (21), driving the material barrel (231) to reciprocate within the corresponding range of the material box, so that the discharged fibrils are evenly discharged into the interior of the material box; S5, the pressing block (31) and the slider (33) move downward to compact the fibrils inside the material box; Repeat steps S2-S5 until the filling and compaction of the material box is completed.

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