Ring spinning machine screw type lift cop system

Abstract

The application belongs to the technical field of textile machinery, and particularly relates to a screw type lifting ring loop independent lifting system of a ring spinning frame, which comprises a power device and a lifting device, wherein the power device comprises a servo motor, a transmission box body and two transmission rods, and the two transmission rods are respectively located on the two sides of the ring spinning frame; the lifting device comprises a plurality of lifting units, each of which comprises a screw type lifting assembly, a ring rail plate support assembly and a ring loop support assembly; the screw type lifting ring loop independent lifting system of the ring spinning frame is used for driving by the original servo motor and realizing the automatic switching of the ring loop from following the guide plate in the small yarn stage to following the ring rail in the middle yarn and large yarn stages through the screw speed difference and mechanical alternate bearing, so as to solve the problem of high breakage rate caused by the fact that the existing ring loop cannot control the tension in stages, and achieve the effects of significantly reducing the breakage rate, improving the yarn quality, reducing the transformation cost and adapting to multi-variety production.

Description

Technical Field

[0001] This invention belongs to the field of textile machinery technology, specifically relating to an independent lifting system for the screw-type lifting air ring of a ring spinning machine. Background Technology

[0002] Ring spinning frames are key pieces of equipment in textile production. During the spinning process, the balloon ring, as a tension control component, plays a crucial role in the stability of the balloon shape and the control of yarn tension. The yarn spinning process is divided into three stages: small yarn, medium yarn, and large yarn. Among them, the small yarn stage has the smallest yarn bobbin diameter, the highest balloon height, and the most unstable shape. The yarn tension is prone to peaks or drastic fluctuations, making it the stage with the highest breakage rate.

[0003] In existing ring spinning frames, the screw-type lifting balloon ring support is typically fixed to the ring rail and reciprocates at equal intervals with it. In this structure, the balloon ring cannot independently adjust its lifting trajectory according to changes in the spinning stage. Specifically, during the small yarn stage, the balloon ring cannot actively move closer to the upper part of the ring rail to suppress tension peaks, resulting in a persistently high yarn breakage rate when the equipment is running at high speeds. Simultaneously, because the balloon ring moves synchronously with the ring rail, it is impossible to dynamically adjust the balloon ring position for different yarn types, spindle speeds, and winding stages, thus hindering the speed increase of the spinning frame and further improvement of yarn quality.

[0004] In addition, in the existing structure, the lifting and lowering movements of the yarn guide plate and the steel ring plate are driven by the same power source, but their lifting speed and stroke are usually fixed, making it difficult to achieve precise phased control of the air ring; some improvement schemes attempt to add independent power sources, but this would significantly increase equipment costs and modification difficulty.

[0005] Therefore, how to achieve independent lifting and precise position control of the air ring at each stage of small yarn, medium yarn, and large yarn without adding an additional power source, so as to reduce the breakage rate and improve yarn quality, has become a technical problem that urgently needs to be solved in this field. Summary of the Invention

[0006] In view of this, the present invention provides a screw-type lifting air ring independent lifting system for ring spinning machines. The system aims to achieve the following by using the speed difference between the lifting screws of the guide plate and the ring plate, driven only by the existing servo motor, and the alternating support of the lifting support rod retaining ring and sheet metal support components, without adding an additional power source. This allows the air ring to follow the guide plate during the small yarn stage and automatically switch to follow the ring plate during the medium and large yarn stages. This solves the problem in existing technologies where the air ring tension cannot be independently adjusted in stages, leading to high breakage rates and poor yarn quality during the small yarn stage. The system significantly reduces breakage rates, improves yarn hairiness and evenness, adapts to multi-variety, small-batch production, and reduces equipment modification costs.

[0007] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0008] The screw-type lifting air ring independent lifting system for ring spinning frames is located on the middle wall plate of the frame unit in the ring spinning frame. This screw-type lifting air ring independent lifting system includes:

[0009] The power unit includes a servo motor installed at the rear of the ring spinning machine. The output end of the servo motor is connected to a transmission housing. The transmission housing has two output ends, each connected to a transmission rod. The two transmission rods are located on both sides of the ring spinning machine.

[0010] The lifting device includes several lifting units. Each transmission rod has two lifting units positioned at the beginning and end of the corresponding frame unit. Each lifting unit includes a screw-type lifting assembly, a steel collar support assembly, and a gas ring support assembly, wherein:

[0011] The screw-type lifting assembly includes a worm gear transmission box, and a guide plate lifting screw and a steel collar lifting screw that are vertically inserted inside the worm gear transmission box. The transmission rod is horizontally inserted inside the worm gear transmission box, and the rotational power of the transmission rod is converted into the lifting action of the guide plate lifting screw and the steel collar lifting screw through the worm gear transmission box.

[0012] A steel ring plate support assembly includes a steel ring plate support installed on the top of the steel ring plate lifting screw, and a sheet metal support is provided on one side of the steel ring plate support.

[0013] The air ring support assembly includes an air ring support rod and a lifting support rod retaining ring. The air ring support rod has a through hole inside, through which it is slidably fitted onto the middle of the yarn guide plate lifting screw. The lifting support rod retaining ring is fixed to the middle of the yarn guide plate lifting screw and is used to support the air ring support rod from below during the small yarn stage, so that the air ring support rod moves synchronously with the yarn guide plate lifting screw during the small yarn stage. During the medium and large yarn stages, the sheet metal support member contacts the bottom of the air ring support rod and lifts the air ring support rod, and the lifting support rod retaining ring disengages from the air ring support rod, so that the air ring support rod moves synchronously with the ring rail lifting screw.

[0014] Preferably, in the lifting device, each lifting unit further includes a yarn guide plate lifting assembly. The yarn guide plate lifting assembly includes a yarn guide plate support seat, which is located at the top of the yarn guide plate lifting screw. A yarn guide plate support rod is horizontally inserted inside the yarn guide plate support seat, and a plurality of yarn guide plates are evenly spaced on the yarn guide plate support rod. The plurality of yarn guide plates correspond one-to-one with a plurality of spindle positions of the ring spinning machine.

[0015] Preferably, in the steel collar plate support assembly, a steel collar plate is provided on the top of the steel collar plate support, and the sheet metal support does not interfere with the steel collar plate.

[0016] Preferably, in the screw-type lifting assembly, the speed ratio of the lifting action of the collar plate lifting screw to the yarn guide plate lifting screw is 10:3.

[0017] Preferably, in the gas ring support assembly, each end of the through hole is sequentially fitted with a lifting rod bushing, a felt ring, and a lifting rod bearing cap along the axial direction, and both lifting rod bearing caps are connected to the gas ring support rod body by bolts.

[0018] Preferably, the air ring support rod is further provided with an air ring positioning plate and an air ring. The air ring is fixed to the air ring support rod by the air ring positioning plate. The air ring positioning plate and the air ring are arranged in a one-to-one correspondence and there are several sets in total. The several air rings correspond one-to-one with several spindle positions of the ring spinning machine.

[0019] The beneficial effects of this invention are as follows:

[0020] In general, this invention utilizes the servo motor and transmission box at the tail of the ring spinning machine to output power, and distributes the power to each screw-type lifting component through the transmission rod. This eliminates the need for an additional independent power source, significantly reducing equipment modification and manufacturing costs. Furthermore, by sliding the air ring support component onto the guide plate lifting screw, and through the mechanical cooperation between the lifting support rod retaining ring and the sheet metal support, the air ring can automatically switch to follow the guide plate lifting screw during the small yarn stage and automatically switch to follow the ring rail lifting screw during the medium and large yarn stages.

[0021] Based on this, in the small yarn stage, the balloon ring actively moves closer to the upper part of the balloon to suppress tension peaks. In the medium and large yarn stages, it adapts synchronously with the ring rail to stabilize the balloon shape, thereby avoiding tension abrupt changes caused by an excessively large balloon or instability caused by an excessively small balloon. This significantly reduces the breakage rate from the source, making it especially suitable for high-speed spinning. At the same time, the stable balloon shape reduces friction and interference between the yarn and the balloon ring, as well as between adjacent spindles, reducing hairiness and unevenness. It also avoids uneven winding tension caused by tension fluctuations, and its quality improvement effect is particularly prominent for fine yarns, chemical fibers, and other high-quality yarns.

[0022] Furthermore, the position of the lifting rod retaining ring and the height of the sheet metal support component of this invention can be individually adjusted according to different yarn varieties, spindle speeds, and raw material characteristics, without requiring overall equipment modifications, thus adapting to the needs of multi-variety, small-batch production. Structurally, the sealed lubrication design between the lifting rod bushing, felt ring, and lifting rod bearing cover, and the yarn guide plate lifting screw, ensures long-term operational stability. Attached Figure Description

[0023] 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.

[0024] Figure 1 This is a schematic diagram of the overall structure of the screw-type lifting air ring independent lifting system in this invention;

[0025] Figure 2 for Figure 1 Enlarged structural diagram at point A;

[0026] Figure 3 This is a schematic diagram of the specific structure of the gas ring support assembly in this invention;

[0027] Figure 4 This is a schematic diagram of the cooperative operation structure of the air ring support component and the yarn guide plate lifting screw in the small yarn stage of the present invention;

[0028] Figure 5 This is another schematic diagram of the cooperative operation structure of the air ring support component and the yarn guide plate lifting screw in the small yarn stage of the present invention.

[0029] Figure 6 This is a schematic diagram of the cooperative operation structure of the air ring support component and the steel ring lifting screw in the middle yarn stage and the large yarn stage of the present invention;

[0030] Figure 7 This is another schematic diagram of the cooperative operation structure of the air ring support component and the steel ring lifting screw in the middle yarn stage and the large yarn stage of the present invention. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. 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 skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. The terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Furthermore, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0033] In ring spinning frames, the balloon ring, as a key tension control component, optimizes tension stability by actively constraining its shape, thereby reducing yarn breakage and ensuring yarn quality from the source. The spinning process is divided into three stages: small yarn, medium yarn, and large yarn. In the small yarn stage, the yarn tube diameter is smallest, the balloon ring height is highest, and its shape is most unstable, making tension prone to peaks or drastic fluctuations. Excessive tension leads to uneven yarn, reduced strength, and even yarn breakage, while insufficient tension easily causes "boob collisions" and frictional entanglement. Drastic tension fluctuations cause uneven winding tightness, affecting subsequent processes. Existing screw-type lifting balloon ring supports are typically fixed to the ring rail and reciprocate at equal intervals with it. This makes it impossible to specifically adjust the balloon ring tension in the small yarn stage, resulting in a persistently high breakage rate during high-speed operation, hindering the speed increase of the spinning frame and the improvement of yarn quality.

[0034] Therefore, this invention provides an independent lifting system for the balloon ring of a ring spinning frame using a screw-type lifting mechanism. This system requires no additional power source, directly utilizing the power of the existing servo motor of the spinning frame, which is distributed to each lifting unit via a transmission rod. The balloon ring support rod is slidably mounted on the lifting screw of the yarn guide plate. Mechanical cooperation is achieved through the support ring and the sheet metal support on the side of the ring rail support, allowing the balloon ring to follow the lifting screw of the yarn guide plate during the small yarn stage, and automatically switch to following the lifting screw of the ring rail during the medium and large yarn stages. Thus, the lifting trajectory of the balloon ring is coordinated with the yarn guide plate and the ring rail, switching the control area in stages to avoid sudden tension changes caused by an excessively large balloon ring or instability caused by an excessively small balloon ring.

[0035] The technical solution of this application will now be described in detail with reference to the accompanying drawings.

[0036] The screw-type lifting air ring independent lifting system for ring spinning frames provided by this invention is located on the middle wall plate of the frame unit in the ring spinning frame. It should be noted that existing ring spinning frames are divided into several sections, each section serving as a frame unit. Each frame unit contains several spindles, and each spindle operates as an independent working unit for spinning. The air ring involved in this application is a core component that needs to be equipped with each spindle. Therefore, this application will provide a detailed description of the specific configuration and operating principle of the air ring.

[0037] The screw-type lifting air ring independent lifting system of the ring spinning machine includes a power unit 1 and a lifting device, wherein:

[0038] like Figure 1 As shown, the power unit 1 includes a servo motor 101 installed at the rear of the ring spinning machine. The output end of the servo motor 101 is connected to a transmission housing 102. The transmission housing 102 has two output ends, each connected to a transmission rod 103. The two transmission rods 103 are located on both sides of the ring spinning machine.

[0039] like Figure 1 As shown, the lifting device includes several lifting units. Each transmission rod 103 is equipped with two lifting units at the beginning and end positions of the corresponding frame unit. Each lifting unit includes a screw-type lifting assembly 2, a steel collar plate support assembly 3, a yarn guide plate lifting assembly 4, and a gas ring support assembly 5.

[0040] Specifically, such as Figure 1 As shown, the screw-type lifting assembly 2 includes a worm gear transmission box 201, and a guide plate lifting screw 202 and a collar plate lifting screw 203 vertically inserted inside the worm gear transmission box 201. The transmission rod 103 is horizontally inserted inside the worm gear transmission box 201, and the rotational power of the transmission rod 103 is converted into the lifting action of the guide plate lifting screw 202 and the collar plate lifting screw 203 through the worm gear transmission box 201.

[0041] It should be noted that the installation of the worm gear transmission box 201, the guide plate lifting screw 202, the ring bar lifting screw 203, and the transmission rod 103 is a conventional installation method for the ring bar and guide plate lifting system in the field of ring spinning machines. This application does not make detailed improvements here, and those skilled in the art can learn about it from existing published literature. In this application, the speed ratio of the lifting action of the ring bar lifting screw 203 to the guide plate lifting screw 202 is 10:3.

[0042] like Figure 2As shown, the steel ring plate support assembly 3 includes a steel ring plate support 301 installed on the top of the steel ring plate lifting screw 203. A sheet metal support 302 is provided on one side of the steel ring plate support 301, and a steel ring plate 303 is provided on the top of the steel ring plate support 301. The sheet metal support 302 and the steel ring plate 303 do not interfere with each other.

[0043] like Figure 1 As shown, the yarn guide plate lifting assembly 4 includes a yarn guide plate support rod seat 401, which is located on the top of the yarn guide plate lifting screw 202. A yarn guide plate support rod 402 is horizontally inserted into the yarn guide plate support rod seat 401, and several yarn guide plates 403 are evenly spaced on the yarn guide plate support rod 402. The several yarn guide plates 403 correspond one-to-one with several spindle positions of the ring spinning machine.

[0044] In this application, the power unit 1 drives the transmission rod 103 to rotate, and the power is transmitted to the guide plate lifting screw 202 and the ring plate lifting screw 203 respectively through the worm gear transmission box 201, thereby driving the guide plate 403 and the ring plate 303 to achieve lifting and lowering movements at a predetermined speed ratio. This part of the structure completes the basic lifting and lowering functions of the guide plate 403 and the ring plate 303 during the spinning process, and meets the conventional requirements of yarn winding for the height of the guide plate 403 and the stroke of the ring plate 303. Its composition and matching method are common designs in the field of ring spinning machines. However, for the balloon ring 508, if only the above-mentioned conventional lifting structure is relied upon, the balloon ring 508 will be fixed and linked with the ring plate 303, and it will be unable to actively approach the upper part of the balloon ring to suppress the tension peak in the small yarn stage, and it will also be difficult to switch the following object as needed in the medium yarn stage and the large yarn stage.

[0045] To this end, the present invention further proposes the following air ring support component 5, so as to enable the air ring 508 to independently switch the lifting trajectory at different spinning stages without adding an additional power source, thereby precisely controlling the air ring tension.

[0046] As the core of this application, such as Figure 1 , Figure 3As shown, the air ring support assembly 5 includes an air ring support rod 501 and a lifting support rod retaining ring 502. The air ring support rod 501 has a through hole inside. At each end of the through hole, a lifting rod bushing 503, a felt ring 504, and a lifting rod bearing cover 505 are sequentially assembled along the axial direction. Both lifting rod bearing covers 505 are connected to the air ring support rod 501 body by bolts 506. Thus, the air ring support rod 501 forms a sliding fit with the yarn guide plate lifting screw 202 through the lifting rod bushing 503 in the through hole, and the air ring support rod 501 is slidably sleeved in the middle of the yarn guide plate lifting screw 202. The felt ring 504 and the lifting rod bearing cover 505 together form a sealing and lubrication structure, which effectively reduces sliding friction, prevents external flying fluff and dust from entering the sliding interface, and ensures the smoothness and reliability of the air ring support rod 501 during long-term operation.

[0047] Based on this, the lifting support rod retaining ring 502 is fixed to the middle of the yarn guide plate lifting screw 202, and is used to support the air ring support rod 501 from below during the small yarn stage, so that the air ring support rod 501 moves synchronously with the yarn guide plate lifting screw 202 during the small yarn stage; during the medium yarn stage and the large yarn stage, the sheet metal support 302 contacts the bottom of the air ring support rod 501 and lifts the air ring support rod 501, and the lifting support rod retaining ring 502 disengages from the air ring support rod 501, so that the air ring support rod 501 moves synchronously with the steel ring plate lifting screw 203.

[0048] The air ring support rod 501 is also equipped with an air ring positioning plate 507 and an air ring 508. The air ring 508 is fixed to the air ring support rod 501 through the air ring positioning plate 507. The air ring positioning plate 507 and the air ring 508 are arranged in a one-to-one correspondence and there are several sets in total. The several air rings 508 correspond one-to-one with the several spindle positions of the ring spinning machine.

[0049] Based on the above embodiments, through the structural design of the aforementioned air ring support component 5, this application achieves phased independent lifting control of the air ring 508 on the basis of the existing screw-type lifting system of ring spinning machines. Specifically: as follows: Figure 4 , Figure 5 As shown, during the small yarn stage, the lifting support rod retaining ring 502 supports the air ring support rod 501 from below, causing the air ring 508 to rise synchronously with the yarn guide plate lifting screw 202, actively approaching the upper part of the air ring. This effectively suppresses the tension peaks and violent fluctuations caused by the small yarn tube diameter and large air ring height during the small yarn stage, reducing the risk of yarn breakage from the source. Figure 6 , Figure 7As shown, during the middle and large yarn stages, the sheet metal support 302 on the ring rail support 301 contacts the bottom of the balloon ring support rod 501 and lifts it, causing the lifting support rod retaining ring 502 to automatically disengage from the balloon ring support rod 501. The balloon ring 508 then moves with the ring rail lifting screw 203. At this time, the balloon ring 508 maintains a relatively stable distance from the ring rail 303, avoiding sudden tension changes caused by an excessively large balloon or instability caused by an excessively small balloon. The entire switching process relies entirely on the natural transition of the mechanical structure, without the need for any additional power source or sensor control.

[0050] Meanwhile, the lifting rod bushing 503, felt ring 504 and lifting rod bearing cover 505 inside the air ring support rod 501 together form a sealing and lubrication system, which ensures that the air ring support rod 501 slides along the yarn guide plate lifting screw 202 with low resistance and high reliability for a long time, and adapts to the frequent reciprocating motion under high-speed spinning conditions. In addition, several air rings 508 are fixed to the air ring support rod 501 one by one through the air ring positioning plate 507, and are precisely aligned with each spindle position, ensuring that the air ring shape of each spindle position is independent, controllable and consistent.

[0051] This core structure significantly improves the control precision of the balloon tension at different spinning stages, effectively reducing breakage rate and quality problems such as hairiness and uneven yarn. It is especially suitable for high-speed spinning production of fine yarns, chemical fibers, and other high-requirement yarns. It also has the advantages of compact structure, low modification cost, and adaptability to multi-variety small-batch production. As for the small yarn stage, medium yarn stage, and large yarn stage mentioned in this application, these are the conventional spinning operation modes of ring spinning machines in this field. This application mainly focuses on the improvement of the operation mode of the balloon ring 508. The core is the automatic switching of the balloon ring 508 following the operation of the guide plate lifting screw 202 and the ring rail lifting screw 203. Therefore, this application will not elaborate on the specific movement mode of the guide plate lifting screw 202 and the ring rail lifting screw 203 themselves.

[0052] In general, during the spinning process, the servo motor 101 at the tail of the ring spinning machine outputs power through the transmission box 102, and distributes it to the screw-type lifting assembly 2 of each frame unit through two transmission rods 103. The worm gear transmission box 201 converts the rotational motion of the transmission rods into the lifting action of the ring rail lifting screw 203 and the guide plate lifting screw 202, respectively. The speed ratio between the two is 10:3, driving the guide plate 403 and the ring rail 303 to move according to the predetermined stroke, thus meeting the basic requirements for yarn winding. Based on this, the air ring support assembly 5 realizes the phased independent control of the air ring 508: In the small yarn stage, the lifting support rod retaining ring 502 fixed in the middle of the yarn guide plate lifting screw 202 supports the air ring support rod 501 from below, so that the air ring 508 rises synchronously with the yarn guide plate lifting screw 202 and actively moves closer to the upper part of the air ring, effectively suppressing the tension peak and violent fluctuation caused by the small diameter of the yarn tube and the large height of the air ring in the small yarn stage, and significantly reducing the breakage rate from the source; In the medium and large yarn stages, the sheet metal support 302 on the ring plate support 301 rises with the ring plate 303 and lifts the air ring support rod 501, so that it is separated from the lifting support rod retaining ring 502. The air ring 508 then moves with the ring plate lifting screw 203 and maintains a stable distance from the ring plate 303, avoiding tension sudden changes and instability caused by the air ring being too large or too small.

[0053] The aforementioned switching process relies entirely on the natural transition of the mechanical structure, requiring no additional power source or sensors, significantly reducing equipment modification costs. Simultaneously, the stable air ring shape reduces frictional interference between the yarn and the air ring 508, as well as adjacent spindle positions, effectively reducing hairiness and unevenness, and preventing uneven winding tightness caused by tension fluctuations. This is particularly significant for improving the quality of high-requirement yarns such as fine yarns and synthetic fibers. Furthermore, the installation position of the lifting support rod retaining ring 502 and the height of the sheet metal support 302 can be individually adjusted according to different yarn varieties, spindle speeds, and raw material characteristics, without requiring overall equipment modifications, thus adapting to the needs of multi-variety, small-batch production.

[0054] In summary, this invention achieves independent lifting and precise position control of the air ring 508 at each spinning stage without adding an additional power source, significantly reducing the breakage rate and improving yarn quality, and has advantages such as compact structure, low modification cost, and wide applicability.

[0055] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A screw-type lifting air ring independent lifting system for a ring spinning frame, located on the middle wall plate of the frame unit of the ring spinning frame, characterized in that... The independent lifting system for the screw-type lifting air ring of this ring spinning frame includes: The power unit includes a servo motor installed at the rear of the ring spinning machine. The output end of the servo motor is connected to a transmission housing. The transmission housing has two output ends, each connected to a transmission rod. The two transmission rods are located on both sides of the ring spinning machine. The lifting device includes several lifting units. Each transmission rod has two lifting units positioned at the beginning and end of the corresponding frame unit. Each lifting unit includes a screw-type lifting assembly, a steel collar support assembly, and a gas ring support assembly, wherein: The screw-type lifting assembly includes a worm gear transmission box, and a guide plate lifting screw and a steel collar lifting screw that are vertically inserted inside the worm gear transmission box. The transmission rod is horizontally inserted inside the worm gear transmission box, and the rotational power of the transmission rod is converted into the lifting action of the guide plate lifting screw and the steel collar lifting screw through the worm gear transmission box. A steel ring plate support assembly includes a steel ring plate support installed on the top of the steel ring plate lifting screw, and a sheet metal support is provided on one side of the steel ring plate support. The air ring support assembly includes an air ring support rod and a lifting support rod retaining ring. The air ring support rod has a through hole inside, through which it is slidably fitted onto the middle of the yarn guide plate lifting screw. The lifting support rod retaining ring is fixed to the middle of the yarn guide plate lifting screw and is used to support the air ring support rod from below during the small yarn stage, so that the air ring support rod moves synchronously with the yarn guide plate lifting screw during the small yarn stage. During the medium and large yarn stages, the sheet metal support member contacts the bottom of the air ring support rod and lifts the air ring support rod, and the lifting support rod retaining ring disengages from the air ring support rod, so that the air ring support rod moves synchronously with the ring rail lifting screw.

2. The independent lifting system for the screw-type lifting air ring of the ring spinning machine according to claim 1, characterized in that: In the lifting device, each lifting unit further includes a yarn guide plate lifting assembly. The yarn guide plate lifting assembly includes a yarn guide plate support seat, which is located at the top of the yarn guide plate lifting screw. A yarn guide plate support rod is horizontally inserted inside the yarn guide plate support seat, and several yarn guide plates are evenly spaced on the yarn guide plate support rod. The several yarn guide plates correspond one-to-one with several spindle positions of the ring spinning machine.

3. The independent lifting system for the screw-type lifting air ring of the ring spinning machine according to claim 2, characterized in that: In the steel collar plate support assembly, a steel collar plate is provided on the top of the steel collar plate support, and the sheet metal support does not interfere with the steel collar plate.

4. The independent lifting system for the screw-type lifting air ring of the ring spinning machine according to claim 3, characterized in that: In the screw-type lifting assembly, the speed ratio of the lifting action of the steel collar plate lifting screw to that of the yarn guide plate lifting screw is 10:

3.

5. The independent lifting system for the screw-type lifting air ring of the ring spinning machine according to claim 4, characterized in that: In the gas ring support assembly, a lifting rod bushing, a felt ring, and a lifting rod bearing cover are sequentially assembled axially inside each end of the through hole. Both lifting rod bearing covers are connected to the gas ring support rod body by bolts.

6. The independent lifting system for the screw-type lifting air ring of the ring spinning frame according to claim 5, characterized in that: The air ring support rod is also provided with an air ring positioning plate and an air ring. The air ring is fixed to the air ring support rod by the air ring positioning plate. The air ring positioning plate and the air ring are arranged in a one-to-one correspondence and there are several sets in total. The several air rings correspond one-to-one with the several spindle positions of the ring spinning machine.

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