A spunlace machine with fiber breakage prevention

Abstract

The application discloses a water jet machine capable of preventing fiber cutting, and relates to the field of water jet non-woven fabric production equipment.The water jet machine comprises a rack, a feeding roller rotatably arranged on one side of the rack, a discharging roller rotatably arranged on the other side of the rack, a transmission roller rotatably arranged on the rack and arranged between the feeding roller and the discharging roller, a conveying assembly arranged on the side of the feeding roller away from the transmission roller, a conveying assembly arranged on the side of the discharging roller away from the transmission roller, and the conveying assembly, the feeding roller, the transmission roller, the discharging roller and the conveying assembly are connected through a fiber web transmission, a water jet assembly is fixedly arranged on the rack, the water outlet of the water jet assembly faces the feeding roller or the transmission roller or the discharging roller, a sensor is arranged above the conveying assembly, the sensor can identify the damage state of the fiber web on the conveying assembly, and the sensor is electrically connected with the water jet assembly; the angle of water needles can be adjusted according to different material fiber webs, the problems of fiber damage and insufficient uniformity of some material fiber webs in the water jet process are solved, and the quality of the non-woven fabric is improved.

Description

Technical Field

[0001] This invention relates to the field of spunlace nonwoven fabric production equipment, specifically a spunlace machine that prevents fiber cutting. Background Technology

[0002] Hydroentangling is a process that uses high-pressure water jets to impact a fiber web, causing the fibers to entangle and form a nonwoven fabric with a certain strength and structure. However, different nonwoven fabrics use different fiber web materials, and these fiber webs vary in thickness, density, and impact resistance. When these fiber webs are processed by a traditional hydroentangling machine, the impact force of the water jets can cause some fibers to break due to excessive impact, affecting product quality. Furthermore, uneven water distribution on some fiber webs can lead to excessive or insufficient entanglement in certain areas, affecting the uniformity and mechanical properties of the nonwoven fabric. Summary of the Invention

[0003] The purpose of this invention is to provide a hydroentangling machine that prevents fiber cutting. The angle of the water needles can be adjusted according to different fiber web materials to solve the problems of fiber damage and insufficient uniformity in some fiber web materials during hydroentangling, thereby improving the quality of nonwoven fabrics.

[0004] The above-mentioned optimized structure of the present invention is achieved through the following technical solution: a spunlace machine that prevents fiber cutting, including a frame; A feed roller, which is rotatably mounted on one side of the frame; A discharge roller, which is rotatably mounted on the other side of the frame; A drive roller, which is rotatably mounted on the frame and positioned between the feed roller and the discharge roller; A conveying assembly is disposed on the side of the feed roller away from the drive roller; A transport assembly is located on the side of the discharge roller away from the drive roller, and the conveying assembly, the feed roller, the drive roller, the discharge roller, and the transport assembly are connected by a fiber web drive. A hydroentanglement assembly, which is fixed on the frame and has its outlet facing the feed roller, the drive roller, or the discharge roller; A sensor, located above the transport assembly, is used to identify the damage status of the fiber web on the transport assembly and is electrically connected to the hydroentangling assembly.

[0005] In some embodiments, a laser rangefinder is also included, which is disposed above the conveying assembly, can scan the surface of the fiber web on the conveying assembly, and is electrically connected to the sensor.

[0006] In some embodiments, a drive motor is also included, which is mounted on the frame and connected to the discharge roller.

[0007] In some embodiments, three hydroentangled components are provided at equal intervals above the drive roller, two hydroentangled components are symmetrically provided on the side of the discharge roller near the feed roller, and two hydroentangled components are provided above the feed roller.

[0008] In some embodiments, the spunlace assembly includes a fixing block that is fixedly connected to the frame; A water storage block, which is connected to the fixed block; A water storage tank is located inside the water storage block and is connected to a water pump; Multiple water needles are equally spaced on the side of the water storage block away from the fixed block and are connected to the water storage tank. An adjusting element is disposed between the plurality of water needles and the water storage block.

[0009] In some embodiments, the hydroentanglement assembly further includes an annular groove disposed in the middle of the water storage tank; A lifting ring plate, wherein the lifting ring plate is slidably disposed within the ring groove; A filter element, wherein the filter element is disposed within the lifting ring plate; A reset spring is provided between the lifting ring plate and the bottom wall of the ring groove.

[0010] In some embodiments, the adjusting member includes a plurality of liquid outlet pipes, which are equally spaced on the side of the water storage block away from the fixed block; A fixed ball head is provided on the side of the liquid outlet pipe away from the fixed block; Rotate the ball head, which is coaxially and fixedly connected to the water needle and is sleeved on the fixed ball head; An adjusting motor is mounted on the water storage block and electrically connected to the sensor; An adjusting rod is located on the side of the water storage block away from the fixed block; Multiple main gears are equally spaced on the adjusting rod; The driven gear is fixedly connected to the rotating ball head and meshes with the main gear.

[0011] In some embodiments, the adjusting member further includes at least three sealing grooves, the three sealing grooves being equally spaced along the height of the fixed ball head; A sealing ring is disposed within the sealing groove.

[0012] In some embodiments, the adjusting member further includes two sliding grooves, which are symmetrically arranged on the inner wall of the liquid outlet pipe and the fixed ball head, and connected to the annular groove; A slide bar, which is slidably disposed in the slide groove, with the bottom of the slide bar protruding from the bottom of the fixed ball head and the top of the slide bar fitting against the bottom of the lifting ring plate; Two push blocks are symmetrically arranged on the inner wall of the rotating ball head and attached to the bottom of the slide bar.

[0013] In some embodiments, a limiting piece is provided at the top of the slide bar, and the length of the limiting piece is greater than the width of the slide groove.

[0014] In summary, the present invention has the following beneficial effects: This invention uses sensors to monitor the state of the fiber web in real time. When damage is detected, the water jet's impact angle is adjusted by regulating the motor, thereby reducing the vertical impact force on the fiber web, decreasing the concentration of axial stress in the fibers, and preventing localized fiber breakage due to excessive impact, thus reducing fiber damage. Simultaneously, adjusting the water jet's impact angle improves the uniformity of water distribution on the fiber web, preventing excessive or insufficient fiber entanglement in certain areas, and improving the quality and production efficiency of the nonwoven fabric. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a cross-sectional view of the hydroentanglement component of the present invention; Figure 3 For the present invention Figure 2 Enlarged view of point A in the middle; Figure 4 For the present invention Figure 2 Enlarged view of point B in the middle.

[0016] In the diagram: 1. Frame; 2. Feed roller; 3. Discharge roller; 4. Drive roller; 5. Conveying assembly; 6. Transport assembly; 7. Hydroentangling assembly; 71. Fixed block; 72. Water storage block; 73. Water storage tank; 74. Water needle; 75. Adjusting component; 751. Liquid outlet pipe; 752. Fixed ball head; 753. Rotating ball head; 754. Adjusting rod; 755. Main gear; 756. Driven gear; 757. Slide groove; 758. Slide bar; 759. Pushing block; 76. Ring groove; 77. Lifting ring plate; 78. Filter element; 79. Return spring; 8. Sensor; 9. Laser rangefinder. Detailed Implementation

[0017] The technical solutions of this novel system embodiment will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0018] refer to Figure 1-4 A hydroentangling machine designed to prevent fiber cutting includes a frame 1, a feed roller 2, a discharge roller 3, a drive roller 4, a conveying assembly 5, a transport assembly 6, a hydroentangling assembly 7, a sensor 8, a laser rangefinder 9, and a drive motor. The frame 1 serves as the main support structure for the hydroentangling machine. The feed roller 2 is rotatably mounted on one side of the frame 1, with two hydroentangling assemblies 7 positioned above it. The discharge roller 3 is rotatably mounted on the other side of the frame 1, with two hydroentangling assemblies 7 symmetrically arranged on the side of the discharge roller 3 closest to the feed roller 2. The drive roller 4 is rotatably mounted on the frame 1 and positioned above the feed roller 2. Three hydroentangling components 7 are evenly spaced between roller 2 and discharge roller 3, and above drive roller 4. These components enable hydroentangling of the fiber web at different transport positions. The coordinated operation of multiple hydroentangling components 7 further improves the uniformity and quality of the fiber web. The specific structures of feed roller 2, drive roller 4, and discharge roller 3 are existing technologies and will not be detailed here. The number and position of feed roller 2, drive roller 4, discharge roller 3, and hydroentangling components 7 can be adjusted according to the actual situation of the fiber web to meet the hydroentangling requirements of different fiber webs. Conveying component 5 is located on the side of feed roller 2 away from drive roller 4, enabling the feeding and conveying of the fiber web. Transporting component 6 is located on the side of discharge roller 3 away from drive roller 4, enabling the transport of the hydroentangled fiber web for subsequent drying and other processing. Both conveying component 5 and transporting component 6 can include rotating rollers and conveyor belts. The rotation of the rotating rollers drives the conveyor belt, thereby achieving the transport of the fiber web on conveying component 5 and transporting component 6.

[0019] The conveying assembly 5, feed roller 2, drive roller 4, discharge roller 3, and transport assembly 6 are connected by a fiber web drive. The hydroentangling assembly 7 is fixed on the frame 1, and the water outlet of the hydroentangling assembly 7 faces the feed roller 2, drive roller 4, or discharge roller 3, which can perform hydroentangling treatment on the fiber web. The drive motor is located on the frame 1 and connected to the discharge roller 3, which can drive the discharge roller 3 to rotate, thereby driving the transmission of the entire fiber web. The sensor 8 is located above the transport assembly 6. The sensor 8 can be a vision camera, which can capture real-time images of the fiber web surface on the transport assembly 6, identify fiber damage (such as fuzz, holes), and is electrically connected to the hydroentangling assembly 7 to adjust the water outlet angle of the hydroentangling assembly 7, so as to solve the problem of fiber damage and insufficient uniformity caused by the fixed angle of the water needle, and improve the quality and production efficiency of nonwoven fabric. The laser rangefinder 9 is located above the conveying assembly 5. It can scan the surface of the fiber web on the conveying assembly 5, measure the thickness of the fiber web, and can be electrically connected to the sensor 8. Combined with the data fed back by the sensor 8, it can judge and analyze the overall uniformity of the fiber web, thereby adjusting the hydroentangling assembly 7 to achieve intelligent control of the hydroentangling process.

[0020] In some embodiments, the hydroentangling assembly 7 includes a fixing block 71, a water storage block 72, a water storage tank 73, multiple water needles 74, and an adjusting member 75. The fixing block 71 is fixedly connected to the frame 1 and can support and fix the hydroentangling assembly 7. The water storage block 72 is connected to the fixing block 71. The water storage tank 73 is disposed in the water storage block 72 and connected to a water pump. The water pump can be a high-pressure water pump, which delivers external water to the water storage tank 73 to store high-pressure water flow. Multiple water needles 74 are equally spaced on the side of the water storage block 72 away from the fixing block 71 and are connected to the water storage tank 73. High-pressure water flow is ejected through the water needles 74 and impacts the fiber web to achieve hydroentangling of the fiber web. The structure of the water needles 74 is prior art and will not be described in detail here. The adjusting member 75 is disposed between the multiple water needles 74 and the water storage block 72 and can adjust the angle of the water needles 74 to adjust the impact angle of the water flow on the fiber web to meet the hydroentangling requirements of different fiber webs.

[0021] In some embodiments, the hydroentanglement assembly 7 further includes an annular groove 76, a lifting ring plate 77, a filter element 78, and a return spring 79. The annular groove 76 is located in the middle of the water storage tank 73. The lifting ring plate 77 is slidably disposed in the annular groove 76. The filter element 78 is disposed in the lifting ring plate 77 and can filter the water entering the water storage tank 73. The return spring 79 is disposed between the lifting ring plate 77 and the bottom wall of the annular groove 76.

[0022] When water flows through the water storage tank 73, the filter element 78 filters the water flow to prevent impurities from entering the water needle 74 and causing blockage. When the water needle 74 needs angle adjustment, the slider 758 in the adjusting element 75 slides in the slide groove 757, pushing the lifting ring plate 77 to rise in the ring groove 76, compressing the return spring 79. At this time, the filter element 78 separates from the water flow channel, reducing resistance to the water flow. After the angle adjustment is completed, the lifting ring plate 77 falls back under the action of the return spring 79, and the filter element 78 filters the water flow again.

[0023] In some embodiments, the adjusting member 75 includes a plurality of outlet pipes 751, a fixed ball head 752, a rotating ball head 753, an adjusting motor, an adjusting rod 754, a plurality of main gears 755, and a driven gear 756. The plurality of outlet pipes 751 are equally spaced on the side of the water storage block 72 away from the fixed block 71, one end of which is connected to the water storage tank 73, and the other end is connected to the fixed ball head 752. The fixed ball head 752 is located on the side of the outlet pipes 751 away from the fixed block 71. The rotating ball head 753 is coaxially and fixedly connected to the water needle 74 and is sleeved on the fixed ball head 752. An adjusting motor is mounted on the water storage block 72 and electrically connected to the sensor 8, enabling the water needle 74 to be angled around the fixed ball head 752. The adjusting rod 754 is located on the side of the water storage block 72 away from the fixed block 71. Multiple main gears 755 are evenly spaced on the adjusting rod 754. A driven gear 756 is fixedly connected to the rotating ball head 753 and meshes with the main gears 755. The rotating ball head 753 can be welded to the end face of the driven gear 756, allowing it to rotate in the same direction as the driven gear 756. When the adjusting motor starts, it drives the adjusting rod 754 to rotate, which in turn drives the main gears 755 to rotate. The main gears 755, through meshing with the driven gears 756, drive the rotating ball head 753 to rotate, thereby achieving angle adjustment of the water needle 74.

[0024] In some embodiments, the adjusting member 75 further includes at least three sealing grooves and a sealing ring. The three sealing grooves are equally spaced along the height of the fixed ball head 752, and the sealing ring is disposed in the sealing groove to ensure the sealing between the fixed ball head 752 and the rotating ball head 753 and prevent water leakage.

[0025] In some embodiments, the adjusting member 75 further includes two sliding grooves 757, two sliding strips 758, and two pushing blocks 759. The two sliding grooves 757 are symmetrically arranged on the inner wall of the liquid outlet pipe 751 and the fixed ball head 752, and are connected to the annular groove 76. The sliding strips 758 are slidably disposed in the sliding grooves 757, with the bottom of the sliding strips 758 protruding from the bottom of the fixed ball head 752 and the top of the sliding strips 758 abutting against the bottom of the lifting ring plate 77. The two pushing blocks 759 are symmetrically arranged on the inner wall of the rotating ball head 753 and abutting against the bottom of the sliding strips 758. When the rotating ball head 753 rotates, the pushing blocks 759 push the sliding strips 758 to slide in the sliding grooves 757, thereby changing the contact position between the lifting ring plate 77 and the two sliding strips 758, thus adjusting the different forces acting on the lifting ring plate 77. This causes the lifting ring plate 77 to vibrate during the water filtration process of the filter element 78, preventing impurities from depositing on the filter element 78 and maintaining smooth water flow.

[0026] In some embodiments, a limiting piece is provided at the top of the slide bar 758. The length of the limiting piece is greater than the width of the slide groove 757, which can limit the sliding range of the slide bar 758 and prevent the slide bar 758 from coming out of the slide groove 757.

[0027] In some embodiments, the transmission ratios between the driven gear 756 and the main gear 755 located at the middle and both ends of the water storage block 72 are different, thereby reducing the difference in the magnitude of the water flow impact force on the middle and both ends of the fiber web; ensuring the uniformity of the fiber web's full width. Specifically, the thickness of the fiber web's center and edges can be detected by the laser rangefinder 9, and the motor can be adjusted according to an algorithm to adjust the angle of the water needles 74 in the edge region, making their angle smaller than that of the water needles 74 in the center region. A smaller water needle angle can reduce the diffusion and reflection of water flow in the edge region, making the water flow energy density in the edge region closer to that in the center region.

[0028] The specific workflow is as follows: After pretreatment, the fiber raw material forms a fiber web and is placed on the conveying assembly 5. A laser rangefinder 9 scans the surface of the fiber web on the conveying assembly 5 to obtain information such as the initial thickness and flatness of the fiber web, and transmits this data to the sensor 8. Driven by the feed roller 2, the fiber web is conveyed to the hydroentangling area. In the hydroentangling area, the drive roller 4 supports and guides the fiber web, ensuring stable transmission. When the fiber web reaches the vicinity of the discharge roller 3, the sensor 8 monitors the fiber web on the conveying assembly 6 in real time, identifying the damage status of the fiber web, including the presence of defects such as fiber breakage and holes, and simultaneously detecting the thickness uniformity of the fiber web. The sensor 8 feeds back this real-time monitoring data to the regulating motor and other control units of the hydroentangling assembly 7.

[0029] The adjusting motor, based on data transmitted from sensor 8 and a preset algorithm, determines the material and thickness of the current fiber web, and thus the angle that the water needle 74 needs to be adjusted. The adjusting motor starts, driving the adjusting rod 754 to rotate. Multiple main gears 755 on the adjusting rod 754 rotate accordingly, meshing with the driven gear 756, driving the rotating ball head 753 to rotate around the fixed ball head 752, thereby achieving precise adjustment of the water needle 74 angle. After the water needle 74 angle is adjusted, the water pump delivers high-pressure water to the water storage tank 73. The water flows through the filter element 78 and enters the outlet pipe 751, where it is sprayed out through the water needle 74, impacting the fiber web. Because the angle of the water needle 74 has been optimized according to the characteristics of the fiber web, the water flow acts on the fiber web at a suitable angle and with appropriate impact force, reducing fiber damage. When the water needle 74 is adjusted at an angle, the push block 759 on the inner wall of the rotating ball head 753 pushes the slide bar 758 to slide in the slide groove 757. The slide bar 758 presses against the lifting ring plate 77. The two ends of the lifting ring plate 77 are subjected to different impact forces, which compresses the reset spring 79 and causes vibration, thus preventing the deposition of impurities on the filter element 78 and ensuring smooth water flow.

[0030] After being hydroentangled, the fiber web is transported to the transport assembly 6 by the discharge roller 3, and then undergoes subsequent drying, finishing and other processes.

[0031] To verify the precise control capability and dynamic response speed of the adjusting component 75 over the water needle 74 angle, the target rotation angle of the water needle 74 was set to three levels: 25°, 30°, and 35°. An angle adjustment command was triggered via sensor 8. A high-precision angle sensor was used to record the actual adjustment angle, and the deviation from the target angle and the adjustment time were calculated. The test was repeated 100 times, and the average deviation, maximum deviation, and response time were statistically analyzed.

[0032] The experimental data are shown in Table 1: Table 1

[0033] The data above shows that the average deviation of the angle adjustment of the water needle 74 is ≤0.35° and the response time is ≤130ms, which meets the requirements of high-precision dynamic adjustment and proves that the mechanical transmission (gear meshing) and control logic (sensor linkage) of the adjustment component 75 are reliable.

[0034] To verify the protective effect of this invention on different fiber materials, and to compare the fiber damage rate of a traditional fixed-angle hydroentangling machine, different test materials were used: cotton fiber (200g / m²), polyester fiber (150g / m²), and viscose fiber (180g / m²). The hydroentangling process parameters were set as follows: water pressure 80MPa, water needle spacing 5mm, and fiber web transmission speed 10m / min.

[0035] Damage rate is defined as the percentage of broken fibers per unit area out of the total number of fibers (counted using an electron microscope).

[0036] The experimental data are shown in Table 2: Table 2

[0037] The data above shows that the present invention reduces the fiber damage rate by an average of 48.9% through dynamic angle adjustment, which is superior to the traditional fixed-angle hydroentangling machine, and has a particularly outstanding protective effect on brittle fibers (such as viscose fiber).

[0038] To verify the effect of water needle angle adjustment on improving the uniformity of the fiber web, five measuring points (left, left-middle, middle, right-middle, and right) were selected at equal intervals along the width of the fiber web, and the thickness was measured using a laser rangefinder (9). The standard deviation (σ) of the thickness at each measuring point was calculated, and the uniformity of the traditional fixed angle and the adjustable angle of the present invention was compared. The uniformity was measured by the standard deviation (σ) of the thickness (the smaller the σ, the better the uniformity).

[0039] The experimental data are shown in Table 3: Table 3

[0040] The data above shows that the present invention reduces the standard deviation of the full width thickness by 45.6% by optimizing the water needle angle in the edge area (such as reducing the water needle angle in the edge area to reduce water flow diffusion), thus solving the problem of uneven thickness in the edge area of ​​traditional hydroentangling machines.

[0041] To verify whether dynamic angle adjustment affects production speed, the fiber web processing efficiency of the present invention was compared with that of the traditional fixed angle. The hydroentangling machine was run continuously for 8 hours, and the production length (m) of qualified fiber web per unit time was recorded. The qualified criteria were: fiber damage rate ≤ 10% and thickness standard deviation ≤ 8μm.

[0042] The experimental data are shown in Table 4: Table 4

[0043] The data above shows that while improving quality, the present invention increases processing speed by 25% and the qualified product rate by 17%, proving that dynamic adjustment does not increase additional time consumption, but instead improves overall production efficiency by reducing scrap rate.

[0044] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A hydroentanglement machine that prevents fiber cutting, characterized in that: Including rack (1); Feed roller (2), which is rotatably mounted on one side of the frame (1); The discharge roller (3) is rotatably mounted on the other side of the frame (1); The transmission roller (4) is rotatably mounted on the frame (1) and positioned between the feed roller (2) and the discharge roller (3); Conveying assembly (5), the conveying assembly (5) is located on the side of the feed roller (2) away from the drive roller (4); The transport component (6) is located on the side of the discharge roller (3) away from the drive roller (4), and the conveying component (5), the feed roller (2), the drive roller (4), the discharge roller (3) and the transport component (6) are connected by a fiber web drive. A hydroentanglement assembly (7) is fixed on the frame (1), and the outlet of the hydroentanglement assembly (7) faces the feed roller (2), the drive roller (4), or the discharge roller (3). Sensor (8), which is located above the transport assembly (6), can identify the damage state of the fiber web on the transport assembly (6) and is electrically connected to the hydroentanglement assembly (7); The spunlace assembly (7) includes a fixing block (71), which is fixedly connected to the frame (1); A water storage block (72) is connected to the fixed block (71); A water storage tank (73) is located inside the water storage block (72) and connected to a water pump. Multiple water needles (74) are evenly spaced on the side of the water storage block (72) away from the fixed block (71) and are connected to the water storage tank (73); An adjusting member (75) is disposed between the plurality of water needles (74) and the water storage block (72); The adjusting component (75) includes a plurality of liquid outlet pipes (751), which are equally spaced on the side of the water storage block (72) away from the fixed block (71); A fixed ball head (752) is provided on the side of the liquid outlet pipe (751) away from the fixed block (71); Rotate the ball head (753), which is coaxially and fixedly connected to the water needle (74) and sleeved on the fixed ball head (752); An adjustment motor is mounted on the water storage block (72) and electrically connected to the sensor (8); Adjusting rod (754), the adjusting rod (754) is located on the side of the water storage block (72) away from the fixed block (71); Multiple main gears (755) are evenly spaced on the adjusting rod (754); The driven gear (756) is fixedly connected to the rotating ball head (753) and meshes with the main gear (755). The transmission ratio between the driven gear (756) and the main gear (755) located in the middle and at both ends of the water storage block (72) is different.

2. The spunlace machine for preventing fiber cutting according to claim 1, characterized in that: It also includes a laser rangefinder (9), which is located above the conveying assembly (5), can scan the surface of the fiber web on the conveying assembly (5), and is electrically connected to the sensor (8).

3. The spunlace machine for preventing fiber cutting according to claim 1, characterized in that: It also includes a drive motor, which is mounted on the frame (1) and connected to the discharge roller (3).

4. The spunlace machine for preventing fiber cutting according to claim 1, characterized in that: Three hydroentanglement components (7) are provided at equal intervals above the drive roller (4), two hydroentanglement components (7) are symmetrically provided on the side of the discharge roller (3) near the feed roller (2), and two hydroentanglement components (7) are provided above the feed roller (2).

5. The spunlace machine for preventing fiber cutting according to claim 1, characterized in that: The hydroentanglement assembly (7) also includes an annular groove (76), which is located in the middle of the water storage tank (73); A lifting ring plate (77) is slidably disposed within the ring groove (76); A filter element (78) is disposed within the lifting ring plate (77); A reset spring (79) is provided between the lifting ring plate (77) and the bottom wall of the ring groove (76).

6. The spunlace machine for preventing fiber cutting according to claim 1, characterized in that: The adjusting member (75) further includes at least three sealing grooves, which are equally spaced along the height of the fixed ball head (752); A sealing ring is disposed within the sealing groove.

7. A hydroentanglement machine for preventing fiber cutting according to claim 5, characterized in that: The adjusting component (75) also includes two sliding grooves (757), which are symmetrically arranged on the inner walls of the liquid outlet pipe (751) and the fixed ball head (752) and connected to the annular groove (76); The slide bar (758) is slidably disposed in the slide groove (757), and the bottom of the slide bar (758) protrudes from the bottom of the fixed ball head (752), and the top of the slide bar (758) is attached to the bottom of the lifting ring plate (77). Two push blocks (759) are symmetrically arranged on the inner wall of the rotating ball head (753) and attached to the bottom of the slide bar (758).

8. A hydroentanglement machine for preventing fiber cutting according to claim 7, characterized in that: The top of the slide bar (758) is provided with a limiting piece, the length of which is greater than the width of the slide groove (757).

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