Method and device for preventing cotton fiber attachment during unwinding of high count yarn bobbin based on microenvironment regulation and control

Abstract

The invention discloses a high count yarn bobbin unwinding cotton fiber attachment prevention method and device based on microenvironment regulation and control, relates to the technical field of textile machinery, and aims to solve the problem that yarn tension is concentrated to cause fiber collection due to the fact that a traditional tensioner cannot realize dynamic tension regulation. The device specifically comprises a rear frame and a front frame which are connected, an air cylinder is used for actively applying longitudinal reciprocating motion to a primary sequence roller, so that the distance between the primary sequence roller and a sequence roller is changed, different tension control is achieved when yarn is unwound, meanwhile, the vibration buffering effect on the primary sequence roller is achieved through two-way elastic fixing at the two ends of the primary sequence roller, and the yarn unwinding effect is improved. Therefore, vibration generated when the yarn is unwound is weakened, the cotton fiber collecting phenomenon caused by concentrated tension at the tail of the high-count yarn bobbin is further remarkably reduced, and the purposes of stably and reliably unwinding and preventing cotton fibers from being attached to the yarn can be achieved through combination of the two.

Description

Technical Field

[0001] This invention relates to the field of textile machinery technology, specifically to a method and apparatus for preventing cotton lint adhesion during unwinding of high-count yarn bobbins based on microenvironment control. Background Technology

[0002] The static electricity generated by friction during the unwinding of high-count yarn (especially pure cotton high-count yarn) is the core reason for the "attachment of cotton fibers to the yarn + secondary adsorption after floating and drifting". It is often used to combine grounding of all equipment to conduct static electricity and equipment to eliminate static electricity. Although some static electricity can be eliminated, the adhesion of cotton fibers is also caused by fuzz generated by improper tension of the yarn (the source of cotton fibers). In the existing technology, mechanical tensioners are used to complete the tension control.

[0003] In traditional spinning workshops, the weighted tensioner is widely used. However, the weighted tensioner cannot achieve micro-tension control. Moreover, as the bobbin diameter gradually decreases during unwinding, the weighted tensioner cannot compensate for tension deviation in real time, resulting in a significant difference in tension between the bobbin body and the end of the bobbin. In other words, high-count yarns are prone to lint accumulation due to concentrated tension at the end of the bobbin.

[0004] For example, the warp unwinding tension controller disclosed in patent application number 201320578402.0 uses springs with different tensions to achieve tension control, but it lacks active control capability and is difficult to achieve the purpose of stable and reliable unwinding and preventing cotton lint. Therefore, a solution is proposed. Summary of the Invention

[0005] The purpose of this invention is to provide a method and device for preventing cotton lint adhesion during unwinding of high-count yarn bobbins based on microenvironmental regulation, in order to solve the problem that traditional tensioners cannot achieve dynamic tension adjustment, resulting in concentrated yarn tension and lint accumulation.

[0006] The objective of this invention can be achieved through the following technical solution: a high-count yarn bobbin unwinding and anti-cotton lint attachment device based on microenvironment regulation, comprising a connected rear frame and a front frame, wherein a symmetrically arranged upright plate is installed through the upper end of one side of the rear frame, and a vertically arranged guide rod is installed at the lower end of the upright plate extending into the front frame, and a tension adjustment component is provided on a pair of guide rods;

[0007] The tension adjustment assembly includes a sliding plate movably mounted outside the guide rod and driven by a cylinder to move vertically reciprocally. An adjustment seat is installed on the upper end of the sliding plate corresponding to the guide rod. A primary roller is vertically movably mounted between a pair of adjustment seats. Adjustment rods extending into the adjustment seats are installed at both ends of the primary rollers. A locking spring column is installed on the adjustment seat in the vertical direction corresponding to the adjustment rod.

[0008] The upper ends of the upright plates are slidably mounted with spaced sequential rollers, and the initial and subsequent rollers are used together for unwinding and rewinding the yarn.

[0009] The adjustment seat is further configured such that an adjustment hole is provided in the vertical diameter direction corresponding to the adjustment rod, and the locking spring post coincides with the adjustment hole and its bottom end abuts against the adjustment rod.

[0010] A further configuration is provided: an upper lifting plate is installed on the inner side of the upper end of the adjusting seat, and a lifting spring connected to the initial roller is installed on the inner side of the upper lifting plate.

[0011] The rear frame is further configured such that an outlet hole for yarn is provided on the upper side of the middle position of the upright plate, and a sliding hole for the installation of the sequential roller is provided on the upper end of the upright plate. The sequential roller is movably connected to the upright plate through the sliding hole, and a locking nut is sleeved on the outer side of the sequential roller extending through the sliding hole to the outer end.

[0012] The initial sequence roller is further configured such that both ends are rotating ends, and the initial sequence roller is connected to the adjusting rod through the rotating ends.

[0013] The locking spring post is further configured such that: the locking threaded post at the upper end and the spring end at the lower end are rotatably connected to the adjusting seat and the spring end abuts against the adjusting rod.

[0014] The configuration is further defined as follows: the inner end of the lifting spring is connected to the rotating end of the initial roller, and the lifting spring is symmetrically arranged and always in a compressed state.

[0015] The guide rod is further configured such that brackets are installed at both the upper and lower ends, with the upper bracket connected to the lower end of the upright plate.

[0016] The method for preventing cotton lint adhesion during unwinding of high-count yarn packages based on microenvironment regulation includes the following steps:

[0017] Step 1: Based on the count, fiber material, and bobbin diameter of the high-count yarn to be unwound, loosen the locking nut and adjust the installation position of the sequence roller along the sliding hole so that the yarn winding path can form a reasonable wrap angle with the initial and subsequent rollers. After adjustment, tighten the locking nut to fix the position of the sequence roller.

[0018] Step 2: Rotate the locking thread of the locking spring post to adjust the abutment force of the spring end against the adjusting rod;

[0019] Step 3: Install the high-count yarn bobbin at the corresponding unwinding station, manually pull one end of the yarn, and wind it around the lower side of the initial roller and the upper side of the secondary roller in sequence to form a preset winding path. Finally, lead the yarn out from the lead-out hole and fix it to the feed end of the subsequent processing equipment.

[0020] Step 4: Start the cylinder. Based on the characteristic that the diameter of the high-count yarn bobbin gradually decreases during the unwinding process, the cylinder's extension and retraction stroke and frequency are controlled by a preset program. This drives the sliding plate to move vertically and reciprocally along the guide rod, causing the initial roller to move up and down, thereby achieving dynamic balance adjustment of tension.

[0021] Step 5: During the unwinding process, the initial roller rotates synchronously with the yarn through the rotating end. The locking spring column and the lifting spring form a two-way elastic buffer structure to reduce hair generation. At the same time, in conjunction with the conventional grounding and static electricity dissipation measures in the spinning workshop, cotton lint adhesion is doubly suppressed until the high-count yarn bobbin completes all unwinding operations, the cylinder is closed and the empty bobbin is disassembled.

[0022] The present invention has the following beneficial effects:

[0023] 1. To address the problem that traditional tensioners cannot achieve dynamic tension adjustment, leading to concentrated yarn tension and lint buildup, this method utilizes a cylinder to actively apply longitudinal reciprocating motion to the primary roller, causing a change in the distance between the primary and secondary rollers. This alters the tension control during yarn unwinding. Simultaneously, the "bidirectional elastic fixation" at both ends of the primary roller provides a vibration buffer, weakening the vibration generated during yarn unwinding. This further significantly reduces lint buildup caused by concentrated tension at the end of high-count yarn bobbins. The combination of these two methods achieves a stable and reliable unwinding process, preventing lint from adhering to the yarn.

[0024] 2. The locking spring post adopts a combination structure of "threaded post + spring end". By rotating the locking threaded post, the extension and retraction of the spring end can be changed, thereby precisely adjusting the contact force on the adjusting rod, realizing the fine control of the elastic buffer force of the initial roller, which can adapt to the tension tolerance characteristics of high count yarns of different counts and materials.

[0025] 3. The lifting spring is always kept in a compressed state, continuously applying an upward elastic force to the rotating end of the initial roller, forming a mechanical balance with the downward resisting force at the end of the locking spring column. This ensures that the initial roller is always in a stable force state during dynamic tension adjustment, avoiding positional shifts caused by external force fluctuations and preventing sudden changes in yarn tension. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the structure of the present invention;

[0028] Figure 2 This is a rear view diagram of the present invention;

[0029] Figure 3 This is a structural diagram of the tension adjustment assembly of the present invention;

[0030] Figure 4 This is a partial structural cross-sectional view of the tension adjustment assembly of the present invention;

[0031] Figure 5 This is a side sectional view of the present invention;

[0032] Figure 6 This is an exploded view of the installation structure of the sequence roller of the present invention.

[0033] In the diagram: 1. Rear frame; 2. Front frame; 3. Vertical plate; 4. Bracket; 5. Guide rod; 6. Sliding plate; 7. Adjusting seat; 8. Initial roller; 9. Cylinder; 10. Yarn; 11. Secondary roller; 12. Upper lifting plate; 13. Locking nut; 14. Adjusting vertical hole; 15. Adjusting rod; 16. Locking spring post; 17. Lifting spring; 18. Lead-out hole; 19. Sliding hole. Detailed Implementation

[0034] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments. 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.

[0035] Example 1: To address the problem that traditional tensioners cannot achieve dynamic tension adjustment, leading to yarn tension concentration and lint buildup, the following technical solution is proposed:

[0036] Reference Figure 1 - Figure 6 As shown, the high-count yarn bobbin unwinding anti-cotton lint attachment device based on microenvironment control in this embodiment includes a rear frame 1 and a front frame 2 connected to each other. A symmetrically arranged upright plate 3 is installed through the upper end of one side of the rear frame 1. A vertically arranged guide rod 5 is installed at the lower end of the upright plate 3 extending into the front frame 2. A tension adjustment component is provided on a pair of guide rods 5.

[0037] The tension adjustment assembly includes a sliding plate 6 movably mounted outside the guide rod 5 and driven vertically to reciprocate by a cylinder 9. An adjustment seat 7 is mounted on the upper end of the sliding plate 6 corresponding to the guide rod 5. A primary roller 8 is vertically movably mounted between a pair of adjustment seats 7. Adjustment rods 15 extending into the adjustment seats 7 are mounted at both ends of the primary roller 8. A locking spring column 16 is mounted on the adjustment seat 7 in the vertical direction corresponding to the adjustment rod 15. Secondary rollers 11 are slidably mounted between the upper ends of the vertical plates 3. The primary roller 8 and the secondary rollers 11 are used together for unwinding and setting the yarn 10.

[0038] The cylinder 9 outputs driving force to drive the sliding plate 6 to move vertically and reciprocally along the guide rod 5. The displacement of the sliding plate 6 is synchronously transmitted to the adjustment seat 7 installed on it. The adjustment seat 7 drives the initial roller 8 to move up and down through the adjustment rod 15, thereby changing the relative distance between the initial roller 8 and the subsequent roller 11. The tension state of the yarn 10 is adjusted in real time according to the tension change requirements during the unwinding process of the yarn 10, so as to realize dynamic tension control.

[0039] The adjusting seat 7 has an adjusting vertical hole 14 in the vertical diameter direction corresponding to the adjusting rod 15. The locking spring column 16 coincides with the adjusting vertical hole 14 and its bottom end abuts against the adjusting rod 15. An upper lifting plate 12 is installed on the inner side of the upper end of the adjusting seat 7. A lifting spring 17 connected to the initial roller 8 is installed on the inner side of the upper lifting plate 12.

[0040] The upper side of the rear frame 1 corresponding to the middle position of the upright plate 3 is provided with an outlet hole 18 for the yarn 10 to be led out. The upper end of the upright plate 3 is provided with a sliding hole 19 for the installation of the sequential roller 11. The sequential roller 11 is movably connected to the upright plate 3 through the sliding hole 19. The sequential roller 11 extends through the sliding hole 19 to the outer end and is fitted with a locking nut 13.

[0041] At the same time, the bottom end of the locking spring column 16 on the adjusting seat 7 continuously abuts against the adjusting rod 15, providing downward elastic pressure, while the lifting spring 17 connected to the upper lifting plate 12 applies upward elastic tension to the initial roller 8. The two form a bidirectional elastic fixing structure for the initial roller 8, which plays an effective vibration buffering role during the dynamic displacement of the initial roller 8, weakening the vibration transmission caused by mechanical movement when the yarn 10 is unwound, and reducing the shedding and accumulation of fuzz on the surface of the yarn 10.

[0042] In addition, the position of the sequential roller 11 can be adjusted along the sliding hole 19. After adjustment, it is locked and fixed by the locking nut 13 to adapt to the winding path planning of different specifications of yarn 10, ensuring that the yarn 10 forms a stable wrap angle between the initial roller 8 and the sequential roller 11. The unwound yarn 10 is led out through the lead-out hole 18 to ensure the continuity and stability of the overall unwound process.

[0043] Basic Principle: This invention is a structural improvement on the existing weight-type tensioner. The weight-type tension adjustment method is changed to pneumatic active control. Specifically, a cylinder actively applies longitudinal reciprocating motion to the primary roller, causing a change in the distance between the primary and secondary rollers. This alters the tension control during yarn unwinding. Simultaneously, the "bidirectional elastic fixation" at both ends of the primary roller provides a vibration buffer, weakening the vibration generated during yarn unwinding and significantly reducing the lint buildup caused by tension concentration at the end of high-count yarns. The combination of these two methods achieves a stable and reliable unwinding mechanism that prevents lint from adhering to the yarn.

[0044] It should also be noted that, in addition to the normal implementation of this device, it is also applied in the "microenvironment", which includes temperature and humidity sensors to monitor the temperature and humidity in the microenvironment in real time, and to control the temperature and humidity in a manner known to those skilled in the art.

[0045] Example 2: Refer to Figure 1 , Figure 2 - Figure 3 As shown, this embodiment is a structural optimization of the structure in Embodiment 1; including that both ends of the initial roller 8 are rotating ends, the initial roller 8 is connected to the adjusting rod 15 through the rotating ends, the locking spring column 16 includes a locking threaded column at the upper end and a spring end at the lower end, the locking threaded column is rotatably connected to the adjusting seat 7 and the spring end abuts against the adjusting rod 15.

[0046] The primary roller 8 is connected to the adjusting rod 15 through the rotating end, so that the primary roller 8 can rotate synchronously with the movement of the yarn 10 during the unwinding process. This converts the sliding friction between the yarn 10 and the primary roller 8 into rolling friction, which greatly reduces the coefficient of friction, reduces the wear and shedding of fibers on the surface of the yarn 10, and reduces the amount of lint and cotton wool generated from the source.

[0047] The inner end of the lifting spring 17 is connected to the rotating end of the initial roller 8. The lifting spring 17 is symmetrically arranged and always in a compressed state. Both the upper and lower ends of the guide rod 5 are equipped with brackets 4. The upper bracket 4 is connected to the lower end of the vertical plate 3. The guide rod 5 is rigidly fixed by the brackets 4 at both ends. The connection structure between the upper bracket 4 and the lower end of the vertical plate 3 ensures the verticality of the guide rod 5 and the structural stability, providing precise guidance for the vertical reciprocating motion of the sliding plate 6, avoiding deviation, jamming and other phenomena during the movement of the sliding plate 6, and ensuring the accuracy and timeliness of tension adjustment.

[0048] It is particularly important to note that the locking spring post 16 adopts a combination structure of "threaded post + spring end". By rotating the locking threaded post, the extension and retraction of the spring end can be changed, thereby precisely adjusting the contact force on the adjusting rod 15, realizing the fine control of the elastic buffer force of the initial roller 8, which can adapt to the tension tolerance characteristics of high-count yarns 10 with different counts and materials.

[0049] The lifting spring 17 is always kept in a compressed state, continuously applying an upward elastic force to the rotating end of the initial roller 8, forming a mechanical balance with the downward resisting force of the locking spring column 16, ensuring that the initial roller 8 is always in a stable force state during dynamic tension adjustment, avoiding positional shifts caused by external force fluctuations, and preventing sudden changes in the tension of the yarn 10.

[0050] Example 3: Refer to Figure 1 - Figure 6 As shown, this embodiment combines the technical content of Embodiment 1 and Embodiment 2 to form a method for preventing cotton lint adhesion during unwinding of high-count yarn packages based on microenvironment control, including the following steps:

[0051] Step 1: Based on the count, fiber material, and bobbin diameter of the high-count yarn 10 to be unwound, loosen the locking nut 13 and adjust the installation position of the sequence roller 11 along the sliding hole 19 so that the winding path of the yarn 10 can form a reasonable wrap angle with the initial roller 8 and the sequence roller 11, ensuring that the yarn 10 is stably attached to the roller body during the unwinding process. After adjustment, tighten the locking nut 13 to fix the position of the sequence roller 11.

[0052] Step 2: Rotate the locking thread of the locking spring post 16 to adjust the abutment force of the spring end against the adjusting rod 15. Combined with the initial compression state of the lifting spring 17, set the initial elastic buffer parameters of the initial sequence roller 8 so that the initial tension meets the mechanical characteristics of the yarn 10 to be unwound, and avoid excessive initial tension causing stretching damage to the yarn 10 or insufficient initial tension causing slack drift.

[0053] Step 3: Install the high-count yarn bobbin at the corresponding unwinding station, manually pull one end of the yarn 10, and wind it around the lower side of the initial roller 8 and the upper side of the secondary roller 11 in sequence to form a preset winding path. Finally, lead the yarn 10 out from the lead-out hole 18 and fix it to the feed end of the subsequent processing equipment.

[0054] Step 4: Start cylinder 9. Based on the characteristic that the diameter of the high-count yarn bobbin gradually decreases during the unwinding process, control the extension and retraction stroke and frequency of cylinder 9 through a preset program. Drive the sliding plate 6 to move vertically and reciprocally along the guide rod 5, thereby driving the initial roller 8 to move up and down. This compensates for the tension attenuation of yarn 10 caused by the reduction in bobbin diameter in real time, achieving dynamic balance adjustment of tension and ensuring that the tension of yarn 10 in the bobbin body and the end of the bobbin remains consistent.

[0055] Step 5: During the unwinding process, the initial roller 8 rotates synchronously with the yarn 10 through the rotating end to reduce friction damage. The two-way elastic buffer structure formed by the locking spring column 16 and the lifting spring 17 continuously weakens mechanical vibration and reduces hair generation. At the same time, in conjunction with the conventional grounding and static electricity dissipation measures in the spinning workshop, the phenomenon of cotton lint "attaching to the yarn 10 + secondary adsorption after floating lint drifts" is doubly suppressed until the high-count yarn bobbin completes all unwinding operations, the cylinder 9 is closed and the empty bobbin is disassembled.

[0056] The effect is that, through the orderly execution of the above steps, the tension of the high-count yarn 10 is precisely and dynamically controlled and the microenvironment is optimized during the unwinding process. This effectively solves the problems of lag in tension compensation and insufficient adjustment accuracy of traditional tensioners, and significantly reduces the probability of tension concentration in yarn 10. It blocks the cotton lint adhesion path from two dimensions: "reducing hair generation" and "suppressing electrostatic adsorption", thus significantly reducing the amount of cotton lint adhering to the surface of the unwound yarn 10.

[0057] In summary, the method utilizes a cylinder to actively apply longitudinal reciprocating motion to the primary roller, causing a change in the distance between the primary and secondary rollers. This alters the tension control during yarn unwinding. Simultaneously, the "bidirectional elastic fixation" at both ends of the primary roller provides a vibration buffer, thereby weakening the vibration generated during yarn unwinding. This further significantly reduces the lint buildup caused by tension concentration at the end of high-count yarns. The combination of these two methods achieves a stable and reliable unwinding process, preventing lint from adhering to the yarn.

[0058] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to specific implementations. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A device for preventing lint adhesion during high-branch yarn bobbin unwinding based on microenvironment regulation, comprising a rear frame (1) and a front frame (2) connected, characterized in that, A symmetrically arranged upright plate (3) is installed through the upper end of one side of the rear frame (1). A vertically arranged guide rod (5) is installed at the lower end of the upright plate (3) extending into the front frame (2). A tension adjustment component is provided on a pair of guide rods (5). The tension adjustment assembly includes a sliding plate (6) that is movably mounted outside the guide rod (5) and driven to move vertically reciprocally by a cylinder (9). An adjustment seat (7) is installed on the upper end of the sliding plate (6) corresponding to the guide rod (5). A primary roller (8) is vertically movably mounted between a pair of adjustment seats (7). Adjustment rods (15) extending into the adjustment seats (7) are installed at both ends of the primary rollers (8). A locking spring column (16) is installed on the adjustment seat (7) in the vertical direction corresponding to the adjustment rod (15). The upper ends of the vertical plates (3) are slidably mounted with spaced sequential rollers (11), and the initial roller (8) and the sequential rollers (11) are used together for unwinding the yarn (10).

2. The device for preventing cotton lint adhesion in high-count yarn bobbin unwinding based on microenvironment control according to claim 1, characterized in that, The adjusting seat (7) has an adjusting hole (14) in the vertical diameter direction corresponding to the adjusting rod (15). The locking spring post (16) coincides with the adjusting hole (14) and its bottom end abuts against the adjusting rod (15).

3. The device for preventing cotton lint adhesion in high-count yarn bobbin unwinding based on microenvironment control according to claim 2, characterized in that, The upper inner side of the adjusting seat (7) is equipped with an upper lifting plate (12), and the inner side of the upper lifting plate (12) is equipped with a lifting spring (17) connected to the initial roller (8).

4. The device for preventing cotton lint adhesion in high-count yarn bobbin unwinding based on microenvironment control according to claim 1, characterized in that, The rear frame (1) has an outlet hole (18) for yarn (10) to be led out on the upper side of the middle position of the upright plate (3). The upper end of the upright plate (3) has a sliding hole (19) for mounting the sequence roller (11). The sequence roller (11) is movably connected to the upright plate (3) through the sliding hole (19). The sequence roller (11) extends through the sliding hole (19) to the outer end and is fitted with a locking nut (13).

5. The device for preventing cotton lint adhesion in high-count yarn bobbin unwinding based on microenvironment control according to claim 3, characterized in that, Both ends of the initial roller (8) are rotating ends, and the initial roller (8) is connected to the adjusting rod (15) through the rotating ends.

6. The device for preventing cotton lint adhesion in high-count yarn bobbin unwinding based on microenvironment control according to claim 1, characterized in that, The locking spring post (16) includes a locking threaded post at the upper end and a spring end at the lower end. The locking threaded post is rotatably connected to the adjusting seat (7) and the spring end abuts against the adjusting rod (15).

7. The device for preventing cotton lint adhesion in high-count yarn bobbin unwinding based on microenvironment control according to claim 5, characterized in that, The inner end of the lifting spring (17) is connected to the rotating end of the initial roller (8). The lifting spring (17) is symmetrically arranged and is always in a compressed state.

8. The device for preventing cotton lint adhesion in high-count yarn bobbin unwinding based on microenvironment control according to claim 1, characterized in that, The guide rod (5) is equipped with brackets (4) at both the upper and lower ends, and the bracket (4) at the upper end is connected to the lower end of the upright plate (3).

9. A method for preventing cotton lint adhesion during unwinding of high-count yarn packages based on microenvironmental regulation, as described in any one of claims 1-8, characterized in that... Includes the following steps: Step 1: Based on the count, fiber material and bobbin diameter of the high-count yarn (10) to be unwound, loosen the locking nut (13), adjust the installation position of the sequence roller (11) along the sliding hole (19) so that the winding path of the yarn (10) can form a reasonable wrap angle with the initial roller (8) and the sequence roller (11). After adjustment, tighten the locking nut (13) to fix the position of the sequence roller (11). Step 2: Rotate the locking thread of the locking spring post (16) to adjust the abutment force of the spring end against the adjusting rod (15); Step 3: Install the high-count yarn bobbin at the corresponding unwinding station, manually pull one end of the yarn (10), and wind it around the lower side of the initial roller (8) and the upper side of the secondary roller (11) in sequence to form a preset winding path. Finally, the yarn (10) is led out from the lead-out hole (18) and fixedly connected to the feed end of the subsequent processing equipment. Step 4: Start the cylinder (9). Based on the characteristic that the diameter of the high-count yarn bobbin gradually decreases during the unwinding process, control the extension and retraction stroke and frequency of the cylinder (9) through a preset program, drive the sliding plate (6) to make adaptive vertical reciprocating movement along the guide rod (5), drive the initial roller (8) to move up and down, and realize the dynamic balance adjustment of tension. Step 5: During the unwinding process, the initial roller (8) rotates synchronously with the yarn (10) through the rotating end. The locking spring column (16) and the lifting spring (17) form a two-way elastic buffer structure to reduce hair generation. At the same time, in conjunction with the conventional grounding and static electricity dissipation measures in the spinning workshop, cotton lint adhesion is suppressed in two ways until the high-count yarn bobbin completes all unwinding operations, the cylinder (9) is closed and the empty bobbin is disassembled.

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