A spinning collector, spinning apparatus and method for reducing yarn hairiness from hard fibers
By combining a two-section fiber guiding channel with a bearing-type guiding column, the problems of excessive hairiness and uneven yarn in hard fiber spinning were solved, thereby improving yarn quality and increasing production efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- DONGHUA UNIV
- Filing Date
- 2026-04-10
- Publication Date
- 2026-06-30
AI Technical Summary
In the current spinning process, hard fibers such as jute, kenaf, and sisal produce yarns with excessive and long hairs, which affect the yarn's appearance and strength utilization. Furthermore, the existing collector design results in uneven yarn drying and significant frictional interference, making it difficult to effectively reduce hairs without compromising product performance.
A two-stage fiber guiding channel structure is adopted, using bearing-type guide columns instead of traditional wall constraints. It is designed as a gathering channel and a stabilizing channel. The friction is reduced by rolling friction. Combined with optimized installation position and parameters, the smoothness and gathering of fibers during the drawing process are ensured.
It significantly reduces the amount of fuzz in hard fibers, improves yarn dry quality, reduces friction interference, increases yarn strength utilization and production efficiency, and reduces modification costs.
Smart Images
Figure CN122304078A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of textile technology, and more specifically, to a spinning collector, spinning apparatus, and method for reducing yarn hairiness from hard fibers. Background Technology
[0002] Hard fibers such as jute, kenaf, and sisal are widely used in packaging materials, home decoration, and composite materials due to their high strength, good moisture absorption, and natural raw materials. However, these fibers generally have disadvantages such as coarse and stiff fibers, large length differences, high surface roughness, and weak cohesion. During spinning, many short fiber ends are not easily twisted into the yarn, resulting in dense fuzz on the yarn surface. The resulting yarn has many and long fuzzes, which not only affect the smoothness of the yarn appearance but also lead to unclear opening and increased breakage rate during subsequent weaving, affecting product quality and production efficiency. In addition, because a large number of fibers protrude from the yarn to form fuzz, these fibers contribute very little to the yarn strength, resulting in low fiber strength utilization and a decrease in yarn strength.
[0003] To address the aforementioned fuzz problem, current methods often involve shearing or singeing the yarn or fabric during post-processing. While these methods improve appearance, they inevitably damage the product's weight, strength, and stiffness, affecting its usability. Furthermore, they are costly and result in significant material waste. For example, in sisal yarn processing, a shearing process is specifically implemented to obtain smooth yarn, removing approximately 5% of the total yarn weight in fuzz. This illustrates the serious impact of fuzz on subsequent processing and reflects the substantial material waste it causes.
[0004] In the cotton spinning industry, the currently used compact spinning (also known as tight spinning) separates the gathering zone from the drafting zone. This involves adding a gathering zone outside the drafting zone, using airflow to gather the already drafted fiber slivers, thus eliminating the obstruction to fiber drafting caused by gathering. This effectively reduces hairiness and significantly minimizes the deterioration of yarn evenness. However, this method requires significant modifications to existing machinery, and airflow is difficult to use to gather coarse, hard fibers. Furthermore, the modification costs are prohibitive for coarse, inexpensive jute, flax, and sisal yarns.
[0005] Currently, in cotton, wool, and linen spinning, a method of installing a collector in the drafting zone is used to reduce yarn hairiness. The collector's constraint on the drafted sliver significantly reduces sliver width, increases sliver density, reduces the twist triangle, prevents edge fiber loss, and results in a denser yarn structure, smoother appearance, reduced hairiness, increased strength, and reduced fly. However, because the collector hinders fiber movement in the drafting zone, it severely deteriorates yarn evenness.
[0006] Hard fibers such as jute, kenaf, and sisal experience greater friction against the walls of the collector's internal channels when passing through the drafting zone, thus hindering the fiber drafting movement in the sliver and increasing yarn evenness. Therefore, reducing yarn hairiness while ensuring that yarn evenness is not excessively deteriorated is a crucial prerequisite.
[0007] In the prior art, utility model patent CN205398820U proposes a gate-shaped collector inserted into a pressure bar. This collector can move laterally along the pressure bar while reducing collector bounce, thereby reducing friction and minimizing yarn evenness. However, this collector is only suitable for spinning machines with built-in pressure bars and cannot be applied to spinning machines for hard fibers such as jute, kenaf, and sisal. Furthermore, the friction between the collector and the fiber is sliding friction, resulting in a relatively high coefficient of friction. Invention patent CN103361784A reduces the coefficient of friction by changing the rectangular inlet and outlet of the traditional collector to an arc shape and the two-point contact to an arc contact, thus solving the problem of high friction caused by the sharp edges of the traditional collector. However, the friction between the collector wall and the fiber is still sliding friction, which still significantly hinders the movement of the fiber during drafting, and still leads to uneven yarn evenness. The utility model patent CN202297927U reduces the uncontrolled area between the front roller and the upper pin by setting a hollow structure on the collector plate, but its collector body is still a fixed wall surface. In essence, it fails to solve the core contradiction that the large friction interference between the fiber and the wall surface during the aggregation process leads to the potential deterioration of the yarn evenness.
[0008] In summary, all existing solutions suffer from varying degrees of frictional interference, especially when applied to the spinning of hard fibers. This results in uneven and unstable fiber movement, leading to reduced yarn hairiness but severe deterioration in yarn evenness. The core of these problems lies in the structural design of the collector and its coordination with other structures in the drafting zone during operation. To address these issues, people have been seeking an ideal technical solution. Summary of the Invention
[0009] The purpose of this invention is to address the shortcomings of existing technologies by providing a spinning collector, spinning device, and method that, through shape, structural design, and dimensional constraints, can significantly reduce frictional interference to the drafting motion of hard fibers, improve yarn evenness, effectively aggregate fibers, and reduce hairiness.
[0010] To achieve the above objectives, the technical solution adopted by the present invention is: a spinning collector for reducing yarn hairiness of hard fibers, comprising a base and two sets of bearing-type guide columns, the two sets of bearing-type guide columns being symmetrically installed on the base, and a fiber guiding channel being formed between the two sets of bearing-type guide columns.
[0011] The fiber guiding channel is configured with a continuous aggregation section and a stabilization section from the inlet end to the outlet end;
[0012] The bearing-type guide columns on both sides of the agglomeration section gradually move closer to each other from the inlet end to the outlet end to form a gradually narrowing agglomeration channel.
[0013] The bearing-type guide columns forming both sides of the stabilizing section maintain a consistent spacing from the inlet end to the outlet end to form a stabilizing channel with a constant width. The width of the stabilizing channel is consistent with the width of the outlet end of the accumulating channel.
[0014] This invention employs a two-stage fiber finishing structure within the collector. The design of the aggregation channel provides lateral physical constraint and aggregation of the diffused fiber slivers. The design of the stabilizing channel ensures that coarse, hard, and difficult-to-aggregate jute, kenaf, and sisal fibers, once aggregated, remain in an aggregated state, allowing the fibers to be tightly aligned before entering the front roller nip. By replacing the wall constraint in traditional solutions with a bearing-type guide post, the rolling contact reduces friction during fiber aggregation, minimizing interference with fiber stretching and effectively reducing hairiness. Ultimately, the resulting jute, kenaf, and sisal yarns not only exhibit significantly reduced hairiness but also improved evenness.
[0015] Based on the above, the bearing-type guide post includes a central post and a bearing. The central post is fixed to the base, and the bearing is fitted onto the central post. The surface roughness Ra of the bearing is less than 3.2 μm. The bearing structure itself is a rolling motion structure, and it rolls into contact with the rigid fiber, thus possessing the ability to reduce friction. By reducing the surface roughness, friction interference can be further reduced, optimizing the smoothness and stability of the transmission of the rigid fiber.
[0016] Based on the above, the two bearing-type guide posts constituting the stable channel outlet are lower than the other bearing-type guide posts, which are at the same height. This is mainly to reduce the space occupied at the stable channel outlet, allowing the collector to be closer to the front roller jaws, reducing the uncontrolled area near the front roller, strengthening the clustering effect on the fiber bundles, and preventing interference between the bearing posts and the front roller, thus avoiding disruption to the rotation of the front roller.
[0017] Based on the above, the height of the two bearing-type guide pillars constituting the stable channel outlet is 3-4mm, and the height of the other bearing-type guide pillars is 4-6mm.
[0018] Based on the above, the diameter of the central column is 3-4 mm, and the outer diameter of the bearing is 5-6 mm. Within these dimensions, the bearing-type guide column offers superior support and transmission performance for rigid fibers.
[0019] Based on the above, the inlet width of the aggregation channel is 15-20mm, the outlet width is 5-8mm, and the channel length is 10-15mm. The width of the stabilization channel is 5-8mm, and the channel length is 10-15mm. This channel size design yields relatively better results.
[0020] A spinning apparatus for reducing yarn hairiness from hard fibers includes a spinning collector for reducing yarn hairiness from hard fibers disposed in the yarn drafting zone, and a back roller, a middle roller, and a front roller arranged in sequence.
[0021] The spinning collector for reducing yarn hairiness from hard fibers is located between the front roller and the middle roller, and the distance between the outlet of the spinning collector for reducing yarn hairiness from the nip of the front roller is 8-15 mm.
[0022] This solution restricts the application area of the spinning collector for reducing yarn hairiness from hard fibers to the fine yarn drafting zone. It is based on the modification of existing equipment, which can reduce the difficulty and cost of modifying existing equipment. Through the design of the installation position, the collector can achieve the best technical effect.
[0023] A spinning method for reducing yarn hairiness from hard fibers, implemented using the aforementioned spinning apparatus for reducing yarn hairiness from hard fibers, includes the following processes:
[0024] The hard fiber sliver, which controls the diffusion state, passes sequentially through the back roller, middle roller, spinning collector to reduce yarn hairiness of hard fibers, and front roller;
[0025] The vertical distance between the hard fiber tufts in the spinning collector for reducing yarn hairiness and the base surface is between 1 and 2 mm.
[0026] This method constrains the movement path of the hard fiber in the yarn drafting zone and the position parameters of the hard fiber in the collector. Under the constraint of this control method, the hard fiber bundle does not contact the base surface and is only supported and guided by the bearing-type guide columns on both sides, which minimizes the frictional interference between the hard fiber bundle and the collector and avoids deterioration of yarn evenness.
[0027] Based on the above, the material of the hard fiber tufts is one or more of jute, kenaf, and sisal.
[0028] This invention possesses significant substantive features and substantial advancements compared to existing technologies. Specifically, it redesigns the shape of the collector, incorporating a two-section structure: a gathering channel and a stabilizing channel. Bearing-type guide pillars replace the wall surface to support and guide the hard fibers, reducing friction. First, the gathering channel effectively gathers the hard fiber slivers, and then the stabilizing channel constrains and holds the gathered slivers. During this process, the significant reduction in friction allows for smooth drafting, and the aggregation morphology of the fiber bundles is strengthened and maintained, effectively reducing yarn hairiness and improving yarn evenness.
[0029] Furthermore, through a series of optimized assembler parameters, the assembler is made to have optimal performance.
[0030] Furthermore, by designing the installation parameters in the yarn drafting zone, the difficulty and cost of modifying existing cotton spinning equipment have been significantly reduced.
[0031] Furthermore, by controlling the state parameters of the hard fiber sliver and optimizing the equipment during the drafting process, the spinning quality of hard fibers is improved. Attached Figure Description
[0032] Figure 1 This is a schematic diagram of the overall structure of the spinning collector for reducing yarn hairiness from hard fibers in this invention. Figure 2 This is a partial structural schematic diagram of the spinning collector for reducing yarn hairiness from hard fibers in this invention. Figure 3 This is a partial dimensional schematic diagram of the spinning collector for reducing yarn hairiness of hard fibers in this invention. Figure 4 This is a schematic diagram of the spinning device for reducing yarn hairiness from hard fibers in this invention. In the diagram: 1. Base; 2. Bearing-type guide column; 3. Fiber guide channel; 4. Back roller; 5. Middle roller; 6. Front roller; 7. Spinning collector to reduce yarn hairiness from hard fibers;
[0033] 21. Central column; 22. Bearing; 31. Accumulation channel; 32. Stabilizing channel. Detailed Implementation
[0034] The technical solution of the present invention will be further described in detail below through specific embodiments. Example 1
[0035] In this embodiment, the material of the hard fiber tuft is one or more of jute, kenaf, and sisal. These fibers generally have disadvantages such as coarse and hard fibers, large length differences, large surface roughness, and weak cohesion, which are common defects of hard fibers.
[0036] like Figures 1-3 As shown, a spinning collector for reducing yarn hairiness from hard fibers includes a base 1 and two sets of bearing-type guide columns 2. The two sets of bearing-type guide columns 2 are symmetrically installed on the base 1, and a fiber guiding channel 3 is formed between the two sets of bearing-type guide columns 2.
[0037] The fiber guiding channel 3 is configured as a continuous aggregation section and a stabilization section from the inlet end to the outlet end.
[0038] The bearing-type guide columns 2 on both sides of the aggregation section gradually approach each other from the inlet end to the outlet end to form an aggregation channel 31 that gradually narrows. Its outline shape from a top view is approximately trapezoidal. In this embodiment, the number of bearing-type guide columns 2 constituting the aggregation channel 31 is designed to be 6, with 3 on each side, symmetrically distributed.
[0039] The bearing-type guide pillars 2 constituting both sides of the stabilizing section are spaced at the same distance from the inlet end to the outlet end to form a stabilizing channel 32 with a constant width. The width of the stabilizing channel 32 is the same as the width of the outlet end of the gathering channel 31. In this embodiment, the number of bearing-type guide pillars 2 constituting the stabilizing channel 32 is designed to be 6, with 3 on each side, symmetrically distributed.
[0040] Structural principle explanation:
[0041] Compared to the traditional annular constriction shape, the overall channel structure of the fiber guiding channel 3 utilizes a two-section channel structure. In the aggregation channel 31, the diffused hard fiber slivers are progressively aggregated laterally. The stabilizing channel 32 has a certain length and can maintain the aggregated hard fiber in an aggregated state, enabling it to stably cross the span between the front roller jaws and the front roller jaws, so that the fibers are tightly arranged before entering the front roller jaws.
[0042] The direction change, guidance and support processes in this process are completed by the bearing-type guide column 2, and the friction between it and the rigid fiber is changed from traditional sliding friction to rolling friction, thereby reducing the interference with the stretching motion of the rigid fiber.
[0043] With the combined effect of the above two aspects, the yarn hairiness of hard fibers can be significantly reduced and the degree of yarn evenness can be improved.
[0044] In this embodiment, the structure of the bearing-type guide post 2 includes a central post 21 and a bearing 22. The central post 21 is fixed on the base 1, and the bearing 22 is fitted on the central post 21. The surface roughness Ra of the bearing 22 is less than 3.2 μm.
[0045] In other embodiments, the bearing-type guide post 2 can also be constructed in other forms, such as being fixed separately from the base, and the surface roughness can also be lower or slightly higher, which can be adjusted according to process requirements.
[0046] like Figure 2 As shown, in some preferred embodiments, the diameter D1 of the central column is 3 mm, the inner diameter of the bearing column is 3 mm, the outer diameter D2 is 6 mm, and its height is 1 mm lower than the height of the central column. In other embodiments, the specific dimensions can be optimized according to the equipment volume, the parameters of the rigid fiber, etc.
[0047] In the dimensional design of the bearing-type guide post 2, in some embodiments, the two bearing-type guide posts constituting the stable channel outlet are lower than the other bearing-type guide posts, while the other bearing-type guide posts have the same height. For example, the height H1 of the two bearing-type guide posts constituting the stable channel outlet is 3-4 mm, and the height H2 of the other bearing-type guide posts is 4-6 mm. Through the optimized height design, the thickness of the rigid fiber strip output from the outlet end can be controlled.
[0048] In some preferred embodiments, the inlet width A of the aggregation channel is 15-20mm, the outlet width B is 5-8mm, and the channel length L1 is 10-15mm. The width B of the stabilization channel is 5-8mm, and the channel length L2 is 10-15mm. With these channel size designs, relatively better results can be achieved. Example 2
[0049] like Figure 4 As shown, a spinning device for reducing yarn hairiness from hard fibers includes a spinning collector 7 for reducing yarn hairiness from hard fibers as described in Example 1, which is disposed in the yarn drafting zone, and a rear roller 4, a middle roller 5, and a front roller 6 arranged in sequence.
[0050] The spinning collector 7 for reducing yarn hairiness of hard fibers is located between the front roller 6 and the middle roller 5, and the distance X between the outlet of the spinning collector 7 for reducing yarn hairiness of hard fibers and the nip of the front roller 6 is 8-15mm.
[0051] In this embodiment, the installation position of the spinning collector 7 for reducing the hairiness of hard fiber yarn and the distance parameters from the nip of the front roller 6 are mainly specified. On the one hand, compared with the traditional partitioning modification scheme, the modification difficulty and modification cost are relatively lower. On the other hand, by constraining the distance between the outlet and the nip of the front roller 6, and in conjunction with the design of the stabilizing section, the hard fiber slivers that are gathered and stabilized in the collector can be kept in a tight arrangement before entering the nip of the front roller. Example 3
[0052] A spinning method for reducing yarn hairiness from hard fibers, implemented based on the spinning apparatus for reducing yarn hairiness from hard fibers described in Example 2, includes the following processes:
[0053] The hard fiber sliver, which controls the diffusion state, passes sequentially through the back roller, middle roller, spinning collector to reduce yarn hairiness of hard fibers, and front roller;
[0054] The vertical distance Y between the hard fiber tufts in the spinning collector for reducing yarn hairiness of hard fibers and the base surface is between 1 and 2 mm, mainly to prevent the hard fiber tufts from contacting the base surface and avoid sliding friction.
[0055] The following are comparative experiments conducted using this method, and the results are shown in Tables 1 and 2.
[0056] Table 1 Test Protocol Fiber varieties Strip quantification g / m fine yarn linear density tex Collector inlet width A (mm) Collector outlet width B (mm) X Y Number of columns on one side <![CDATA[L1]]> <![CDATA[L2]]> <![CDATA[H1]]> <![CDATA[H2]]> Coefficient of friction between fiber and bearing / wall Experimental Example 1 Sisal 6.7 1000 20 8 15 2 3 15 15 4 6 0.08 Experiment Example 2 jute 5.2 300 17 6 10 1.5 4 12 12 3 5 0.11 Experimental Example 3 Red hemp 3.2 200 15 5 8 1 6 10 10 3 4 0.12 Comparison 1 jute 5.2 300 / / / / / / / / / / Comparison 2 jute 5.2 300 17 6 / / / / / / / 0.4 Comparison 3 jute 5.2 300 17 6 15 1.5 4 12 12 3 5 0.11 Comparison 4 jute 5.2 300 17 6 10 0 is too small 4 12 12 3 5 0.11
[0057] Table 2 Comparison of the effects of ensemblers with different parameters and traditional schemes Surface roughness Coefficient of friction between fiber and bearing / wall Average distance from the acceleration point to the front roller jaws Acceleration point variance Hairiness index (root / meter) Yarn unevenness (%) Experimental Example 1 2.5 0.08 8.5 5.3 100.9 15.81 Experiment Example 2 2.3 0.11 10.3 3.6 134.6 27.37 Experimental Example 3 2.3 0.12 15.0 7.2 133.7 32.30 Comparison 1 / / 11.5 4.8 214.6 27.29 Comparison 2 5 0.4 15.4 5.5 131.2 34.44 Comparison 3 2.3 0.11 15.7 5.3 135.5 28.19 Comparison 4 2.3 0.11 14.8 6.2 132.8 32.54
[0058] The performance indicators in the table are: hairiness and yarn evenness. The effect of the assembler on the fiber drafting motion was compared by testing the distribution of acceleration points. The smaller the distance between the acceleration point and the front roller nip, the smaller the variance, which is more conducive to the yarn evenness, i.e., the smaller the yarn evenness (based on existing research).
[0059] Among them, Experimental Example 1 is a collector of one specification within the constraint parameter range of the present invention. The raw material for spinning is sisal sliver, and the amount of sisal sliver fed in is 6.7 g / m.
[0060] Experimental Example 2 is the second specification of the collector in this invention within the range of constraint parameters. The raw material for spinning is jute sliver, and the amount of jute sliver fed in is 5.2 g / m.
[0061] Experimental Example 3 is the third type of collector within the constraint parameter range of the present invention. The raw material for spinning is kenaf sliver, and the amount of kenaf fed in is 3.2 g / m.
[0062] The results from the three experimental examples show that both the hairiness index and the yarn evenness index are within a relatively good range.
[0063] Comparative Example 1 is one of the traditional schemes, without the collector, and other spinning parameters are the same as those in Experimental Example 2. Its hairiness index is significantly increased, while the quality parameters of Experimental Example 2 are significantly improved.
[0064] Comparative Example 2 is a traditional solution that uses a common collector with a wall, i.e., the collector wall is made of ordinary plastic, which generates sliding friction. As a result, the yarn unevenness increases significantly, and the effect of friction is fully reflected.
[0065] Comparative Example 3 shows the third specification of the collector of the present invention. The variable is the distance X between the collector and the jaws of the front roller 6. If the distance is too large, the uncontrolled area increases and the yarn unevenness increases, which illustrates the importance of the installation position of the collector in the yarn drafting zone.
[0066] Comparative Example 4 is the fourth specification of the collector of the present invention. The variable is the vertical distance Y between the hard fiber bundle in the collector and the base surface. If it is too small, there will be bottom friction, which will interfere with the movement of the fibers and increase the unevenness of the fibers. This shows the quality impact caused by the intervention of traditional sliding friction and the importance of controlling the parameters of the hard fiber bundle during operation.
[0067] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them; although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications can still be made to the specific implementation of the present invention or equivalent substitutions can be made to some technical features without departing from the spirit of the technical solutions of the present invention, and all such modifications and substitutions should be covered within the scope of the technical solutions claimed in the present invention.
Claims
1. A spinning collector for reducing yarn hairiness from hard fibers, characterized in that: It includes a base and two sets of bearing-type guide pillars, which are symmetrically installed on the base, and form a fiber guide channel between the two sets of bearing-type guide pillars. The fiber guiding channel is configured with a continuous aggregation section and a stabilization section from the inlet end to the outlet end; The bearing-type guide columns on both sides of the agglomeration section gradually move closer to each other from the inlet end to the outlet end to form a gradually narrowing agglomeration channel. The bearing-type guide columns forming both sides of the stabilizing section maintain a consistent spacing from the inlet end to the outlet end to form a stabilizing channel with a constant width. The width of the stabilizing channel is consistent with the width of the outlet end of the accumulating channel.
2. The spinning collector for reducing yarn hairiness from hard fibers according to claim 1, characterized in that: The bearing-type guide post includes a central post and a bearing. The central post is fixed on the base, and the bearing is fitted on the central post. The surface roughness Ra of the bearing is less than 3.2 μm.
3. The spinning collector for reducing yarn hairiness from hard fibers according to claim 1, characterized in that: The two bearing-type guide pillars that form the stable channel exit are lower than the other bearing-type guide pillars, while the other bearing-type guide pillars are at the same height.
4. The spinning collector for reducing yarn hairiness from hard fibers according to claim 3, characterized in that: The two bearing-type guide pillars that form the stable channel outlet have a height of 3-4mm, while the other bearing-type guide pillars have a height of 4-6mm.
5. The spinning collector for reducing yarn hairiness from hard fibers according to claim 2, characterized in that: The diameter of the central column is 3-4 mm, and the outer diameter of the bearing is 5-6 mm.
6. The spinning collector for reducing yarn hairiness of hard fibers according to claim 1, 2, 3, 4, or 5, characterized in that: The inlet width of the aggregation channel is 15-20mm, the outlet width is 5-8mm, and the channel length is 10-15mm. The width of the stabilization channel is 5-8mm, and the channel length is 10-15mm.
7. A spinning device for reducing yarn hairiness from hard fibers, characterized in that: Includes a spinning assembler for reducing yarn hairiness from hard fibers, as described in any one of claims 1-6, located in the yarn drafting zone, and sequentially distributed back rollers, middle rollers, and front rollers; The spinning collector for reducing yarn hairiness from hard fibers is located between the front roller and the middle roller, and the distance between the outlet of the spinning collector for reducing yarn hairiness from the nip of the front roller is 8-15 mm.
8. A spinning method for reducing yarn hairiness from hard fibers, characterized in that: The spinning apparatus for reducing yarn hairiness from hard fibers as described in claim 7 includes the following process: The hard fiber sliver, which controls the diffusion state, passes sequentially through the back roller, middle roller, spinning collector to reduce yarn hairiness of hard fibers, and front roller; The vertical distance between the hard fiber tufts in the spinning collector for reducing yarn hairiness and the base surface is between 1 and 2 mm.
9. The spinning method for reducing yarn hairiness from hard fibers according to claim 8, characterized in that: The material of the hard fiber tufts is one or more of jute, kenaf, and sisal.