Self-adjusting device for drafting friction force of spinning frame

Abstract

The present invention provides a self-adjusting device for the drafting friction force of a spinning machine, comprising a cotton spinning lower pin and a tension adaptive roller respectively connected to the lower pin apron in a rolling manner. The cotton spinning lower pin comprises a vertical portion and a horizontal portion arranged at the top of the vertical portion; the end of the horizontal portion in contact with the lower pin apron is provided with a plurality of mounting grooves in sequence along the length direction of the horizontal portion, and a core shaft is accommodated in the mounting groove, the axis of the core shaft is parallel to the length direction of the horizontal portion, and the outer side of the core shaft is provided with a sleeve connected to the core shaft in rotation; the tension adaptive roller comprises a transverse sleeve for supporting the lower pin apron, and a columnar support shaft connected to the transverse sleeve through a symmetrical arc platform. In the above manner, the present invention can change the sliding friction between the lower pin apron and the lower pin, and between the lower pin apron and the tension frame into rolling friction, and utilize the transverse cooperation of the rolling sleeve of the lower pin and the tension adaptive roller to regulate the stress change of the friction force boundary, thereby effectively improving the yarn quality.

Description

Technical Field

[0001] The invention relates to the technical field of spinning traction equipment, in particular to a self-adjusting device for the drafting friction force of a spinning frame. Background Art

[0002] In the textile field, the lower pin and upper pin, apron, roller, leather roller and cradle together form a drafting system to draft and control the roving strands. In the drafting zone, part of the fibers are accelerated at the speed change point by the drafting force, and the other part of the fibers are not accelerated by the holding force. The accelerated movement of the fibers forms the drafting process, and then the accelerated fibers are twisted into yarn after passing through the front jaws, so the state of the accelerated fibers directly affects the quality of the yarn. In the unit cross-section of the roving strands, the more neatly and orderly the fiber arrangement is, the easier it is to be smoothly drafted, and the better the various indicators of the yarn are, especially the improvement of the fiber dryness is more significant. This phenomenon is due to the fact that during the yarn-forming process, the fibers transfer inside and outside in the twisting triangle area, and twist and hold themselves in the main body of the yarn. The neatly arranged fibers are subjected to the same force direction in this process, and the transfer process is smooth and orderly, thereby forming a yarn with good longitudinal uniformity. Therefore, ensuring that the fibers are smoothly and orderly drafted in the main drafting zone is a key factor in improving the quality of the yarn.

[0003] In order to achieve this goal, the lower pin is set as a T-shaped pin body consisting of a horizontal upper part and a vertical lower part. The upper part of the pin body is stepped, and the high part structure cooperates with the lower pin apron and the upper pin to elastically hold the fiber, and the low part structure cooperates with the lower pin apron, the spacing block and the upper pin to form an elastic jaw, which is conducive to the drafting of the fiber. However, the lower pin and the lower pin apron have sliding friction during the operation of the machine, and the pressure of the upper pin increases the friction force on the lower pin apron, so that the lower pin apron on the lower pin moves unsmoothly and slips, and even the lower pin apron is stuck at the rear end of the lower pin due to the large resistance during the movement, which affects the advancement and drafting of the fiber strands, and ultimately affects the quality of the yarn. At the same time, the large friction also affects the service life of the lower pin apron. In addition, the sliding friction between the lower pin apron tension frame and the lower pin apron will also affect the yarn quality, production energy consumption and the service life of the lower pin apron.

[0004] In order to reduce the friction between the lower pin and the lower pin leather ring, the patent with publication number CN201473659U provides a lower pin with a combined lower pin and leather ring, including a lower pin base and a curved body arranged on the lower pin base, and at least one wear-resistant roller is arranged on the curved body at the front edge of the lower pin base. Although this technology greatly reduces the rotational friction resistance of the lower pin leather ring by arranging a wear-resistant roller on the curved body, the rotating structure that directly connects the wear-resistant roller to the curved body is not convenient for subsequent lateral fine-tuning of the wear-resistant roller, and the stability of this rotating structure during the rotation process is not good enough. Similarly, in order to further reduce the friction of the lower pin leather ring during the stretching process, the tension frame can also be transformed and designed into a roller-type mechanism. However, the single roller design still has the defects of unstable mechanism and easy mechanical fatigue, and there is still a lack of relevant research on the joint adjustment of the friction boundary between the lower pin and the tension frame. In addition, the existing tension frames are usually non-integrated designs. This design method is prone to cause fluctuations in the friction force boundary of the single spindle drafting area under the condition of mechanical fatigue, which in turn leads to a decrease in yarn quality and also increases the difference between spindles.

[0005] In view of this, it is necessary to design an improved spinning frame drafting friction force boundary self-adjusting device to solve the above problems. Summary of the invention

[0006] In view of the defects of the above-mentioned prior art, the object of the present invention is to provide a spinning frame drafting friction limit self-adjusting device with a simple structure, which can reduce the friction between the lower pin leather ring and the lower pin and the tension frame, the rotating structure can be fine-tuned laterally, the rotating structure has good working stability and can be adaptively adjusted.

[0007] To achieve the above-mentioned purpose, the present invention provides a self-adjusting device for the drafting friction force of a spinning machine, comprising a cotton spinning lower pin and a tension-adaptive roller respectively connected to the lower pin leather ring in a rolling manner; the cotton spinning lower pin comprises a vertical portion and a horizontal portion arranged at the top of the vertical portion; the end of the horizontal portion in contact with the lower pin leather ring is provided with a plurality of mounting grooves in sequence along the length direction of the horizontal portion, a core shaft is accommodated in the mounting groove, the axis of the core shaft is parallel to the length direction of the horizontal portion, and the outer side of the core shaft is provided with a sleeve rotatably connected to the core shaft; the tension-adaptive roller comprises a transverse shaft sleeve for supporting the lower pin leather ring, and a cylindrical support shaft connected to the transverse shaft sleeve through a symmetrical arc table.

[0008] As a further improvement of the present invention, one end of the cylindrical support shaft is connected to the tension frame, and the other end is connected to the symmetrical arc table; one end of the lateral moving shaft sleeve is connected to the main shaft of the tension frame, and the other end forms a stable structure with the cylindrical support shaft through the symmetrical arc table.

[0009] As a further improvement of the present invention, the transverse shaft sleeve includes a roller and a bearing; there are two bearings, which are respectively embedded in the main shaft of the tension frame and the symmetrical arc platform, and the inner wall of the bearing is embedded with annular internal teeth; the two ends of the roller are arranged in the form of gears, which are connected with the internal teeth of the bearing.

[0010] As a further improvement of the present invention, the two tension frames corresponding to each cradle are connected via a spring.

[0011] As a further improvement of the present invention, the surface of the cylindrical support shaft is wrapped with a velvet sleeve for cleaning the lower pin leather ring; the cylindrical support shaft and the transverse shaft sleeve are arranged at a certain angle so that the velvet sleeve of the cylindrical support shaft is in contact with the lower pin leather rings on both sides without compressing them.

[0012] As a further improvement of the present invention, the surface of the roller is engraved with patterns to increase the friction between the lower pin leather ring and the roller and reduce accidental draft caused by slipping.

[0013] As a further improvement of the present invention, sealing rings are provided at both ends of the traverse sleeve to prevent non-material from entering the connection between the bearing and the roller and affecting the smoothness of rotation.

[0014] As a further improvement of the present invention, the horizontal portion includes a plane segment and a curved segment connected to each other, the plane segment is arranged in a horizontal structure, the curved segment is arranged in a curved structure, and the plurality of mounting grooves are arranged at equal intervals on one end of the plane segment away from the curved segment.

[0015] As a further improvement of the present invention, the cross-sections of the plurality of installation grooves are all arranged in a first arc-shaped structure, and the distance between any two adjacent installation grooves is 35 mm.

[0016] As a further improvement of the present invention, the core shaft coincides with the axis of the mounting groove, and the minimum straight-line distance between the core shaft at the outermost end and one end of the plane segment is 3 mm.

[0017] As a further improvement of the present invention, one end of the planar segment away from the curved segment is provided in a second arc-shaped structure, and the diameter of the second arc-shaped structure is 3 mm.

[0018] As a further improvement of the present invention, the minimum distance between the outermost end of the sleeve and the innermost end of the mounting groove is 3.5 mm.

[0019] As a further improvement of the present invention, the sleeve is arranged in a cylindrical structure and is sleeved on the outer side of the core shaft. The inner diameter of the sleeve is larger than the outer diameter of the core shaft, and the length of the sleeve is smaller than the length of the core shaft.

[0020] As a further improvement of the present invention, the outer diameter of the core shaft is 2 mm and the length thereof is 35 mm.

[0021] As a further improvement of the present invention, the inner diameter of the sleeve is 2.4 mm, the outer diameter is 3 mm, and the length is 34 mm.

[0022] As a further improvement of the present invention, the core shaft and the sleeve are both made of stainless steel.

[0023] The beneficial effects of the present invention are:

[0024] 1. The self-adjusting device for the drafting friction limit of the spinning frame provided by the present invention can convert the sliding friction between the lower pin leather ring and the lower pin, and between the lower pin leather ring and the tension frame into rolling friction by arranging a freely rotatable sleeve at the contact position between the lower pin and the lower pin leather ring, and at the same time arranging the supporting shaft connecting the tension frame and the lower pin leather ring as a tension-adaptive roller composed of a cylindrical supporting shaft and a transverse shaft sleeve. This not only reduces the friction between the two and increases the service life of the lower pin leather ring, but also reduces the relative slippage of the upper and lower leather rings, thereby stably conveying the fiber strands to the speed change point. In addition, the friction limit generated by the elastic grip of the elastic jaws on the fiber becomes more stable, which greatly improves the yarn quality.

[0025] 2. The self-adjusting device for the drafting friction force boundary of the spinning frame provided by the present invention ensures that the sleeve can be more stable when rotating around the core shaft by setting the sleeve on the outside of the core shaft and setting a certain gap between the inner peripheral wall of the sleeve and the outer peripheral wall of the core shaft; and the length of the sleeve is less than the length of the core shaft, which can ensure that the sleeve has fine-tuning space in the axial direction. At the same time, the present invention sets a transverse sleeve so that the roller in the transverse sleeve can rotate radially and transversely move axially, and then cooperates with the sleeve that can be transversely fine-tuned in the axial direction to coordinately regulate the stress change of the friction force boundary. On this basis, the present invention further connects the two tension frames through a spring so that the two tension frames work together, flexibly adjust the tension mutation, reduce the impact of the lower pin leather ring and each contact part, thereby further reducing stress fluctuations, enhancing the stability of the friction force boundary, and further improving the yarn quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 The invention is a schematic diagram of the installation structure of the self-adjusting device for the drafting friction force of a spinning frame provided by the present invention.

[0027] Figure 2 It is a structural schematic diagram of the cotton spinning lower pin in the self-adjusting device for the drafting friction force boundary of the spinning frame provided by the present invention at a viewing angle.

[0028] Figure 3It is a schematic structural diagram of the cotton spinning lower pin in the self-adjusting device for the drafting friction force boundary of the spinning frame provided by the present invention from another perspective.

[0029] Figure 4 yes Figure 2 Schematic cross-sectional view along the AA direction.

[0030] Figure 5 The present invention is a schematic structural diagram of a tension frame in a self-adjusting device for the drafting friction force of a spinning frame.

[0031] Figure 6 The invention discloses a schematic diagram of the connection between two tension frames in the self-adjusting device for the drafting friction force of a spinning frame.

[0032] Reference numerals

[0033] 1. Cotton spinning lower pin; 11. Vertical part; 12. Horizontal part; 121. Plane section; 1211. Mounting groove; 122. Curved section; 13. Sleeve; 14. Mandrel; 2. Tension adaptive roller; 21. Columnar support shaft; 22. Transverse sleeve; 221. Bearing; 222. Roller; 3. Symmetrical arc table; 4. Tension frame; 5. Lower pin leather ring; 6. Spring. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0035] It should also be noted that, in order to avoid obscuring the present invention due to unnecessary details, only structures and / or processing steps closely related to the scheme of the present invention are shown in the drawings, while other details that are not closely related to the present invention are omitted.

[0036] In addition, it should be noted that the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus.

[0037] like Figure 1 As shown, the present invention provides a self-adjusting device for the drafting friction force of a spinning machine, comprising a cotton spinning lower pin 1 and a tension adaptive roller 2 which are respectively connected to the lower pin leather ring 5 in a rolling manner; the cotton spinning lower pin 1 comprises a vertical portion 11 and a horizontal portion 12 arranged at the top of the vertical portion 11; the tension adaptive roller 2 comprises a transverse moving shaft sleeve 22 for supporting the lower pin leather ring 5 and a cylindrical support shaft 21 connected to the transverse moving shaft sleeve 22 through a symmetrical arc platform 3.

[0038] For details, please refer to Figure 2-4 In the cotton spinning lower pin 1, the vertical part 11 is used to fix the lower pin at a specified position, and the horizontal part 12 is arranged perpendicular to the vertical part 11 and arranged in a stepped structure. The end of the horizontal part 12 close to the lower pin apron 5 is the low end, which cooperates with the lower pin apron 5, the spacing block and the upper pin to form an elastic jaw for drawing the fiber. The end of the horizontal part 12 away from the lower pin apron 5 is the high end, which cooperates with the lower pin apron 5 and the upper pin to elastically hold the fiber.

[0039] The end of the horizontal portion 12 that contacts the lower pin apron 5 is provided with a plurality of mounting grooves 1211 in sequence along the length direction of the horizontal portion 12, and the shapes and sizes of the plurality of mounting grooves 1211 are completely consistent. The plurality of mounting grooves 1211 respectively accommodate the mandrel 14, and the two ends of the mandrel 14 are fixed to the left and right side walls of the mounting groove 1211 where it is located. The axis of the mandrel 14 is parallel to the length direction of the horizontal portion 12, and a sleeve 13 rotatably connected to the mandrel 14 is sleeved on the outer side of the mandrel 14. The sleeve 13 can rotate freely relative to the mandrel 14, and part of the structure of the lower pin apron 5 is wound around the outer peripheral wall of the sleeve 13. During the rotation of the lower pin apron 5, the friction between the sleeve 13 and the sleeve 13 will also drive the sleeve 13 to rotate, thereby forming rolling friction between the lower pin apron 5 and the sleeve 13.

[0040] During the drafting process, since there is rolling friction between the cotton spinning lower pin 1 and the lower pin leather ring 5, and the sliding friction of the upper pin leather ring on the lower pin leather ring 5 is greater than the rolling friction between the cotton spinning lower pin 1 and the lower pin leather ring 5, the upper pin leather ring will carry the lower pin leather ring 5 and the fiber whiskers forward together until the fiber whiskers are sent to the acceleration point for acceleration, and finally enter the front jaw to complete the drafting. At the same time, since there is rolling friction between the cotton spinning lower pin 1 and the lower pin leather ring 5, which is much smaller than the original sliding friction between the two, the lower pin leather ring 5 is more easily driven by the upper pin leather ring to rotate, and the possibility of slipping during the relative movement of the two is reduced, so that the fiber whiskers are elastically and forcefully held, which is more conducive to the stability and concentration of the fiber acceleration point, and thus helps the yarn quality. At the same time, since the friction between the lower pin leather ring 5 and the cotton spinning lower pin 1 is reduced, the service life of the lower pin leather ring 5 is increased to a certain extent.

[0041] In this way, by setting a freely rotatable sleeve 13 at the contact position between the cotton spinning lower pin 1 and the lower pin apron 5, the sliding friction between the two is changed to rolling friction, which not only reduces the friction between the two, improves the service life of the lower pin apron 5, but also reduces the relative slippage between the two, thereby stably transporting the fiber strands to the speed change point. In addition, the friction force generated by the elastic grip of the fiber by the elastic jaws becomes more stable, which is conducive to the concentration of the fiber speed change point, preventing the fiber from changing speed in advance when it reaches the main drafting area, and then is conducive to the improvement of the yarn evenness, greatly improving the yarn quality.

[0042] In some embodiments of the present invention, the horizontal portion 12 includes a plane section 121 and a curved section 122 connected to each other, and the connection between the plane section 121 and the curved section 122 is smoothly transitioned. The plane section 121 is arranged in a horizontal structure and is used to contact the lower pin apron 5. The curved section 122 is arranged in a curved structure and is higher than the plane section 121. A plurality of mounting grooves 1211 are arranged at equal intervals at one end of the plane section 121 away from the curved section 122 and are arranged in sequence along the length direction of the plane section 121.

[0043] Specifically, the cross-sections of the plurality of mounting grooves 1211 are all arranged in a first arc-shaped structure to facilitate the installation of the mandrel 14. The spacing between any two adjacent mounting grooves 1211 is 35 mm. The axis of the mandrel 14 and the mounting groove 1211 coincide with each other, and the minimum straight-line distance between the mandrel 14 at the outermost end and one end of the plane section 121 is 3 mm, that is, Figure 2 The distance between point B in the figure and the core shaft 14 closest to point B is 3 mm.

[0044] One end of the plane section 121 away from the curved section 122 is arranged in a second arc structure, the diameter of the second arc structure is 3 mm, which is the same as the outer diameter of the sleeve 13, so that the lower pin leather ring 5 can fit better with the sleeve 13 to ensure the stability of the rotation of the lower pin leather ring 5.

[0045] In some embodiments of the present invention, the sleeve 13 is provided in a cylindrical structure and is sleeved on the outside of the mandrel 14, and can rotate freely around the mandrel 14. The inner diameter of the sleeve 13 is larger than the outer diameter of the mandrel 14, and the length of the sleeve 13 is smaller than the length of the mandrel 14. In particular, the mandrel 14 and the sleeve 13 are both made of stainless steel, have good wear resistance, and have a long service life.

[0046] Specifically, the outer diameter of the mandrel 14 is 2 mm, and the length thereof is 35 mm. The inner diameter of the sleeve 13 is 2.4 mm, the outer diameter thereof is 3 mm, and the length thereof is 34 mm.

[0047] In addition, the minimum distance between the outermost end of the sleeve 13 and the innermost end of the mounting groove 1211 is 3.5 mm. Figure 4 The minimum distance between point C and point D is 3.5 mm.

[0048] In this way, by sleeve 13 being sleeved on the outside of core shaft 14 and providing a certain gap between the inner peripheral wall of sleeve 13 and the outer peripheral wall of core shaft 14, it is ensured that sleeve 13 can rotate more smoothly around core shaft 14. In addition, the length of sleeve 13 is less than the length of core shaft 14, which can ensure that sleeve 13 has a lateral fine adjustment space in the axial direction thereof.

[0049] Please refer to Figure 5, one end of the tension adaptive roller 2 is connected to the tension frame 4, and the other end is used to support the lower pin apron 5. Specifically, in the tension adaptive roller 2, the inner side of one end of the cylindrical support shaft 21 is connected to the tension frame 4, and the outer side of the other end is connected to the symmetrical arc platform 3, and the width of the symmetrical arc platform 3 can accommodate the traverse sleeve 22; the traverse sleeve 22 is arranged parallel to the cylindrical support shaft 21, one end of which is connected to the main shaft of the tension frame 4, and the other end is connected to the symmetrical arc platform 3, so that the traverse sleeve 22 and the cylindrical support shaft 21 form a stable structure through the symmetrical arc platform 3.

[0050] In some embodiments of the present invention, the traverse sleeve 22 includes a roller 222 and a bearing 221; there are two bearings 221, which are respectively embedded in the main shaft of the tension frame 4 and the symmetrical arc platform 3, and the inner wall of the bearing 221 is embedded with an annular internal tooth; the roller 222 is used to support the lower pin leather ring 5, and the two ends of the roller 222 are arranged in the form of gears, which are connected with the internal teeth of the bearing 221, and can rotate in the radial direction and can traverse in the axial direction. With such a configuration, the traverse sleeve 22 can traverse with the sleeve 13 in the cotton spinning lower pin 1 that can be fine-tuned in the axial direction, so as to coordinately regulate the stress change of the friction force boundary.

[0051] Please refer to Figure 6 The two tension frames 4 corresponding to each cradle are connected by a spring 6. Compared with the traditional single tension frame independently set, this one-piece setting in which the two tension frames 4 are connected by the spring 6 can make the two tension frames 4 work together, flexibly adjust the tension mutation, reduce the impact between the lower pin apron 5 and each contact part, thereby further reducing stress fluctuations, enhancing the stability of the friction force boundary, and further improving the yarn quality.

[0052] In some embodiments of the present invention, the surface of the cylindrical support shaft 21 is wrapped with a velvet sleeve to clean the lower pin leather ring 5; the cylindrical support shaft 21 and the traverse sleeve 22 are set at a certain angle so that the velvet sleeve of the cylindrical support shaft 21 is in contact with the lower pin leather rings 5 ​​on both sides without compressing them. At the same time, the surface of the roller 222 is engraved with textures to increase the friction between the lower pin leather ring 5 and the roller 222 and reduce accidental drafting caused by slipping. Sealing rings are also provided at both ends of the traverse sleeve 22 to prevent non-flowers from entering the connection between the bearing 221 and the roller 222, affecting the smoothness of rotation.

[0053] In summary, the present invention provides a self-adjusting device for the drafting friction force of a spinning machine, comprising a cotton spinning lower pin 1 and a tension adaptive roller 2 respectively connected to the lower pin leather ring 5 in a rolling manner; the cotton spinning lower pin 1 comprises a vertical portion 11 and a horizontal portion 12 arranged at the top of the vertical portion 11; the end of the horizontal portion 12 in contact with the lower pin leather ring 5 is provided with a plurality of mounting grooves 1211 in sequence along the length direction of the horizontal portion 12, and a core shaft 14 is accommodated in the mounting groove 1211, the axis of the core shaft 14 is parallel to the length direction of the horizontal portion 12, and the outer side of the core shaft 14 is provided with a sleeve 13 rotatably connected to the core shaft 14; the tension adaptive roller 2 comprises a transverse shaft sleeve 22 for supporting the lower pin leather ring 5, and a cylindrical support shaft 21 connected to the transverse shaft sleeve 22 through a symmetrical arc table 3. Through the above method, the present invention can change the sliding friction between the lower pin leather ring 5 and the cotton spinning lower pin 1, and between the lower pin leather ring 5 and the tension frame 4 into rolling friction, and utilize the lateral movement coordination of the sleeve 13 in the cotton spinning lower pin 1 and the tension adaptive roller 2 to regulate the stress change of the friction force boundary, thereby effectively improving the yarn quality.

[0054] The above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the present invention.

Claims

1. A self-adjusting device for the drafting friction force of a spinning frame, characterized in that: It includes a cotton spinning lower pin and a tension adaptive roller which are respectively connected to the lower pin leather ring in a rolling manner; the cotton spinning lower pin includes a vertical portion and a horizontal portion arranged at the top end of the vertical portion; the end of the horizontal portion which contacts the lower pin leather ring is provided with a plurality of mounting grooves in sequence along the length direction of the horizontal portion, a core shaft is accommodated in the mounting groove, the axis of the core shaft is parallel to the length direction of the horizontal portion, a sleeve which is rotatably connected to the core shaft is sleeved on the outer side of the core shaft, the inner diameter of the sleeve is larger than the outer diameter of the core shaft, and the length of the sleeve is smaller than the length of the core shaft; the tension adaptive roller includes a support for A transverse moving sleeve supporting the lower pin leather ring, and a cylindrical support shaft connected to the transverse moving sleeve through a symmetrical arc platform; one end of the cylindrical support shaft is connected to the tension frame, and the other end is connected to the symmetrical arc platform; one end of the transverse moving sleeve is connected to the main shaft of the tension frame, and the other end forms a stable structure with the cylindrical support shaft through the symmetrical arc platform; the transverse moving sleeve includes a roller and a bearing; there are two bearings, which are respectively embedded in the main shaft of the tension frame and the symmetrical arc platform, and the inner wall of the bearing is embedded with annular internal teeth; the two ends of the roller are arranged in the form of gears, which are matched with the internal teeth of the bearing.

2. The self-adjusting device for the drafting friction force of a spinning frame according to claim 1, characterized in that: The two tension frames corresponding to each cradle are connected via a spring.

3. The self-adjusting device for the drafting friction force of a spinning frame according to claim 1, characterized in that: The surface of the cylindrical support shaft is wrapped with a velvet sleeve.

4. The self-adjusting device for the drafting friction force of a spinning frame according to claim 1, characterized in that: The surface of the roller is engraved with textures.

5. The self-adjusting device for the drafting friction force of a spinning frame according to claim 1, characterized in that: Sealing rings are arranged at both ends of the traverse sleeve.

6. The self-adjusting device for the drafting friction force of a spinning frame according to claim 1, characterized in that: The horizontal portion includes a plane segment and a curved segment connected to each other, the plane segment is arranged in a horizontal structure, the curved segment is arranged in a curved structure, and the plurality of mounting grooves are arranged at equal intervals on one end of the plane segment away from the curved segment.

7. The self-adjusting device for the drafting friction force of a spinning frame according to claim 6, characterized in that: The cross sections of the plurality of installation grooves are all arranged in a first arc-shaped structure, and the end of the planar section away from the curved section is arranged in a second arc-shaped structure.

8. The self-adjusting device for the drafting friction force of a spinning frame according to claim 1, characterized in that: The sleeve is in a cylindrical structure and is sleeved on the outer side of the core shaft.

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