Drafting structure of spinning frame and using method of drafting structure

Abstract

The invention discloses a drafting structure of a spinning frame and a using method thereof, and relates to the technical field of spinning equipment. The device comprises a processing table, wherein a first drafting roller, a second drafting roller and a third drafting roller are arranged at the top of the processing table; a supporting assembly is arranged on one side of the machining table and comprises a supporting frame and a fixing frame which are installed on the top of the machining table, and a supporting block is slidably connected into the supporting frame. Through the collaborative design of the adjustable drafting structure and the intelligent pressure adjusting assembly, the adaptability and the machining precision of the equipment are remarkably improved, a sliding supporting block in the supporting assembly is matched with a threaded rod transmission mechanism of the driving assembly, accurate adjustment of the distance between a first drafting roller and a second drafting roller is achieved, and the machining precision is improved. The processing requirements of different fiber lengths can be met, the pressure adjusting assembly dynamically adjusts the pressure of the leather roller through closed-loop control of the hydraulic rod and the pressure sensor, and the problem that a traditional fixed roller is poor in adaptability to blended fibers is solved.

Description

Technical Field

[0001] This invention belongs to the field of spinning equipment technology, and in particular relates to a drafting structure for a spinning frame and its usage method. Background Technology

[0002] The ring spinning frame is a core piece of equipment in the textile industry, used to evenly draft and twist roving into fine yarn, directly affecting yarn quality and production efficiency. It mainly consists of a feeding mechanism (roving frame), a drafting mechanism (front, middle, and rear rollers and pressure device), a twisting and winding mechanism (spindles, rings, and travelers), and a transmission control system. Modern ring spinning frames employ technologies such as variable frequency speed control, drafting, and automatic winding, featuring high speed (up to 25,000 r / min), low energy consumption, and intelligent operation. They can adapt to the production of various fibers such as cotton, wool, and synthetic fibers. Key innovations include digital tension control, self-cleaning rollers, and online quality monitoring systems, significantly improving yarn evenness and production automation levels, making them essential equipment for textile mills to achieve high-quality and high-efficiency production.

[0003] A Chinese patent application (or patent) with publication number CN212175120U discloses a novel drafting device for a spinning frame, including a frame. The frame is connected to a yarn guide box via support columns. Yarn is arranged inside the yarn guide box. The yarn passing through the yarn guide box is wound around the front drafting roller, the middle drafting roller, and the rear drafting roller via guide rollers. The front drafting roller, the middle drafting roller, and the rear drafting roller are all mounted on the frame. The yarn guide box is also equipped with a pressing and smoothing mechanism for pressing and smoothing the yarn. The lower end of the yarn guide box is also equipped with a dust suction mechanism for absorbing yarn lint. This solves the problem that current drafting devices cannot press and smooth the yarn, making the unsmoothed yarn prone to breakage during drafting and preventing the yarn from curling, which greatly reduces the quality of the yarn. At the same time, the yarn is prone to generating lint and short fiber yarns during the drafting process. Since these cannot be collected and processed, the production environment is poor and harmful to human health.

[0004] However, the above-mentioned device still has the following problems in its implementation: During the yarn stretching process, the front drafting roller, the middle drafting roller, and the rear drafting roller are all installed on the frame and their positions are fixed. Although the fixed position of the rollers ensures mechanical stability, it also has obvious limitations: First, it cannot adapt to the requirements of different fiber lengths. The fixed spacing can easily lead to insufficient stretching of short fibers and excessive compression of long fibers. Second, it is difficult to match the temperature sensitivity differences of fibers (such as cotton at 28℃ and polyester at 25℃). Temperature fluctuations affect the uniformity of fiber softening. Third, it has poor ability to compensate for fluctuations in feed rate, which can easily cause uneven stretching force, increase the risk of yarn breakage, or cause insufficient stretching.

[0005] To address these issues, we provide a drafting structure for a spinning machine and its usage method. Summary of the Invention

[0006] The purpose of this invention is to provide a drafting structure for a spinning machine and its usage method. By cooperating with the support component, drive component and pressure regulating component, it solves the problems of the current yarn stretching process, where the front drafting roller, middle drafting roller and rear drafting roller are all installed on the frame and the positions are fixed. For different yarns, the length of the stretching process is different, which can easily cause uneven stretching force and different temperature requirements during the stretching process.

[0007] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution.

[0008] This invention relates to a drafting structure for a spinning frame, comprising a processing table, on the top of which are arranged a first drafting roller, a second drafting roller, and a third drafting roller; a support assembly is provided on one side of the processing table, the support assembly including a support frame and a fixing frame mounted on the top of the processing table, a support block slidably connected inside the support frame, and the support assembly supports the movement of the first and second drafting rollers; a drive assembly is provided on the top of the processing table, the drive assembly including two sets of first motors mounted on the top of the processing table, a threaded rod mounted on the output end of the first motor, a moving tube threadedly connected to the surface of the threaded rod, and a moving... The frame includes a drive rod and an adjusting rod mounted on the other side of the movable frame, which adjust the fiber drafting distance via an adjusting assembly. The fixed frame contains a pressure regulating assembly, which includes a first roller, a second roller, and a third roller located at the bottom of the fixed frame. A first moving plate is movably connected to the surfaces of the first and third rollers, and a second moving plate is movably connected to the surface of the second roller. A first hydraulic rod is mounted on the top of both the first and second moving plates. The fiber drafting pressure is adjusted via the pressure regulating assembly. A temperature regulating assembly is located on one side of the processing table to adjust the fiber processing temperature.

[0009] The present invention is further configured such that the surfaces of the first drafting roller and the third drafting roller are movably connected to the inner wall of the support block via bearings, and a second motor is fixedly connected to one side of the support block, the output end of the second motor being fixedly connected to the first drafting roller and the second drafting roller.

[0010] The present invention is further configured such that a third motor is fixedly connected inside the support frame, a drive shaft is fixedly connected to the output end of the third motor, and the other end of the drive shaft is fixedly connected to the second stretching roller.

[0011] The present invention is further configured such that a fixed plate is movably connected to the top of the first movable plate via a first pin, the fixed plate is movably connected to the first hydraulic rod via a second pin, a first pressure sensor is fixedly connected to the output end of the first hydraulic rod, and the other end of the pressure sensor is movably connected to the first movable plate.

[0012] The invention is further configured such that the other end of the drive rod passes through the interior of the support frame and is fixedly connected to two sets of support blocks respectively, and the other end of the adjustment rod passes through the interior of the fixed frame and is fixedly connected to two sets of fixed plates respectively.

[0013] The invention is further configured such that the top of the second movable plate is movably connected to the inner wall of the fixed frame via a third pin, a second hydraulic rod is movably connected inside the fixed frame, a second pressure sensor is fixedly connected to the output end of the second hydraulic rod, and the other end of the second pressure sensor is movably connected to the second movable plate.

[0014] The present invention is further configured such that the temperature regulating component includes a guide tube installed on the top of the processing table, a heater and a first temperature sensor installed inside the guide tube, a ventilation tube installed on the bottom of the processing table, an air outlet tube connected to the top of the ventilation tube, a second temperature sensor installed inside the air outlet tube, a heat dissipation tube connected to the other end of the ventilation tube, and a solenoid valve installed on the surface of the air outlet tube.

[0015] The invention is further configured such that a rotating rod is movably connected inside the ventilation pipe, and a first pulley and an exhaust fan blade are fixedly connected to the surface of the rotating rod.

[0016] The present invention is further configured such that a second pulley is fixedly connected to the surface of the drive shaft, and a conveyor belt is sleeved on the surfaces of the first pulley and the second pulley.

[0017] A method for using the drafting structure of a spinning machine includes the following steps;

[0018] S1: The operator first inserts the fiber to be processed into the guide tube and places it between the first drafting roller and the first slip roller. Then, it is inserted between the second drafting roller and the second slip roller, then into the air outlet pipe, and placed between the third drafting roller and the third slip roller. Finally, it is inserted out of the heat dissipation pipe. At the same time, two sets of second motors and the third motor are started. The two sets of second motors drive the first drafting roller and the third drafting roller to rotate respectively. The third motor, in conjunction with the drive shaft, drives the second drafting roller to rotate. By utilizing the different speeds of the first, second, and third drafting rollers, the incoming fiber is drafted. The first drafting roller (highest speed), the second drafting roller (medium speed), and the third drafting roller (lowest speed) form a three-level speed difference. The fiber is gradually stretched under the shear force between adjacent rollers. The greater the speed difference, the higher the drafting ratio, thus completing the fiber stretching process.

[0019] S2: During the fiber drafting process, the first hydraulic rod and the second hydraulic rod can be activated. The first hydraulic rod, in conjunction with the first pressure sensor, applies a pushing force to the first moving plate. The first moving plate pushes the first and third rollers downward. At the same time, the second hydraulic rod moves and, in conjunction with the second pressure sensor, applies a pushing force to the second moving plate. The second moving plate pushes the second roller downward. By using the pressure applied by the first, second, and third rollers, the fiber is tightly gripped to prevent slippage, ensuring that the drafting force is effectively applied to the fiber and reducing roller slippage.

[0020] S3: During fiber stretching, the first and second temperature sensors can be used to detect the fiber processing temperature. When the temperature entering the first stretching roller is lower than the set value, the heater can be activated to preheat the fiber and increase the fiber processing temperature. After the fiber is stretched, it enters the air outlet pipe and heat dissipation pipe. The second temperature sensor detects the temperature of the initially stretched fiber. Then, the solenoid valve is activated to open the air outlet pipe. While the third motor drives the drive shaft to rotate, it can also drive the second pulley to rotate. The second pulley, in conjunction with the first pulley, drives the rotating rod and exhaust fan blades to rotate. The exhaust fan blades drive the airflow and discharge it through the air outlet pipe to dissipate heat from the fiber and keep the fiber at a suitable processing temperature.

[0021] S4: When stretching different fibers, the spacing between the first, second, and third stretching rollers needs to be adjusted. During adjustment, two sets of first motors can be started respectively. The two sets of first motors drive two sets of threaded rods to rotate. The threaded rods, in conjunction with the moving tube, drive the moving frame, drive rod, and adjusting rod to move. The drive rod is used to drive two sets of support blocks to move and adjust the position of the first and second stretching rollers. The adjusting rod is used to drive two sets of fixed plates to move. The fixed plates, in conjunction with the first moving plate, drive the first and second rollers to move and adjust the fiber stretching spacing to adapt to different fiber processing requirements and improve the fiber processing effect.

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

[0023] 1. This invention significantly improves the adaptability and processing accuracy of the equipment through the coordinated design of an adjustable drafting structure and an intelligent pressure regulating component. The sliding support block in the support component works in conjunction with the threaded rod transmission mechanism of the drive component to achieve precise adjustment of the distance between the first drafting roller and the second drafting roller, which can adapt to the processing requirements of different fiber lengths. The pressure regulating component dynamically adjusts the pressure of the roller through closed-loop control of the hydraulic rod and the pressure sensor, which solves the problem of poor adaptability of traditional fixed rollers to blended fibers.

[0024] 2. This invention integrates the temperature control system into the drafting process. Through the linkage control of heaters, heat dissipation pipes, and temperature sensors, it achieves constant temperature management throughout the fiber processing. The heater in the guide tube can quickly preheat the fiber to the optimal process temperature, while the belt-driven exhaust fan blade system can achieve forced heat dissipation without additional energy consumption, allowing the fiber to cool down after drafting. This design not only solves the processing problem of temperature-sensitive fibers but also reduces energy consumption per unit output. At the same time, it avoids the disadvantage of traditional external temperature control equipment occupying a large space, making it particularly suitable for continuous production in high humidity and high heat environments. Attached Figure Description

[0025] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0026] Figure 1 This is a perspective view of the drafting structure of a spinning machine and its usage.

[0027] Figure 2 This is a cross-sectional view of the moving tube in the drafting structure and its use in a spinning machine.

[0028] Figure 3 This is a cross-sectional view of the support frame and fixing frame in the drafting structure and its use method of a spinning machine.

[0029] Figure 4 This is a schematic diagram illustrating the movement of the third drafting roller and the third skin roller in the drafting structure and usage method of a spinning frame.

[0030] Figure 5 This is a schematic diagram showing the connection between the first moving plate and the first hydraulic rod in the drafting structure and usage method of a spinning machine.

[0031] Figure 6 This is a schematic diagram showing the movement of the first drafting roller and the first skin roller in the drafting structure and its usage method of a spinning frame.

[0032] Figure 7 This is a schematic diagram showing the movement of the second drafting roller and the second skin roller in the drafting structure and usage method of a spinning frame.

[0033] Figure 8 This is a cross-sectional view of the guide tube in the drafting structure and its use method of a spinning machine.

[0034] Figure 9 This is a schematic diagram showing the connection of ventilation pipe, air outlet pipe, and heat dissipation pipe in the drafting structure and usage method of a spinning machine.

[0035] Figure 10 This is a partial cross-sectional view of the ventilation duct in the drafting structure and usage method of a spinning machine.

[0036] In the attached diagram: 1. Processing table; 2. First drafting roller; 3. Second drafting roller; 4. Third drafting roller; 5. Support frame; 6. Fixed frame; 7. Support block; 8. First motor; 9. Threaded rod; 10. Moving tube; 11. Moving frame; 12. Drive rod; 13. Adjusting rod; 14. First rubber roller; 15. Second rubber roller; 16. Third rubber roller; 17. First moving plate; 18. Second moving plate; 19. First hydraulic rod; 20. Second motor; 21. 22. Third motor; 23. Drive shaft; 24. Fixing plate; 25. First pressure sensor; 26. Second hydraulic rod; 27. Second pressure sensor; 28. Guide tube; 29. ​​Heater; 30. First temperature sensor; 31. Ventilation duct; 32. Air outlet duct; 33. Second temperature sensor; 34. Heat dissipation duct; 35. Solenoid valve; 36. Rotating rod; 37. First pulley; 38. Exhaust fan blade; 39. Second pulley; 30. Conveyor belt. Detailed Implementation

[0037] The technical solutions of the present invention will be described below with reference to the accompanying drawings. The described embodiments are only some embodiments of the present invention, and not all embodiments.

[0038] Example 1

[0039] Please see Figures 1-10 This invention relates to a drafting structure for a spinning frame and its usage method, comprising a processing table 1, on the top of which are arranged a first drafting roller 2, a second drafting roller 3, and a third drafting roller 4; a support assembly is provided on one side of the processing table 1, the support assembly including a support frame 5 and a fixing frame 6 mounted on the top of the processing table 1, a support block 7 slidably connected inside the support frame 5, and the support assembly supports the movement of the first drafting roller 2 and the second drafting roller 3; a drive assembly is provided on the top of the processing table 1, the drive assembly including two sets of first motors 8 mounted on the top of the processing table 1, a threaded rod 9 mounted on the output end of the first motor 8, a moving tube 10 threadedly connected to the surface of the threaded rod 9, and a moving frame 1 mounted on one side of the moving tube 10. 1. A drive rod 12 and an adjusting rod 13 installed on the other side of the movable frame 11 are used to adjust the fiber stretching distance through the adjusting assembly; a pressure regulating assembly is provided inside the fixed frame 6, which includes a first roller 14, a second roller 15 and a third roller 16 located at the bottom of the fixed frame 6. A first moving plate 17 is movably connected to the surface of the first roller 14 and the third roller 16, and a second moving plate 18 is movably connected to the surface of the second roller 15. A first hydraulic rod 19 is provided on the top of the first moving plate 17 and the second moving plate 18. The fiber stretching pressure is adjusted through the pressure regulating assembly; a temperature regulating assembly is provided on one side of the processing table 1 to regulate the fiber processing temperature.

[0040] Specifically: The first drafting roller 2, the second drafting roller 3, and the third drafting roller 4 form a three-stage drafting roller system. The speed difference between the three drafting rollers creates a gradient drafting force, which gradually and evenly stretches the fiber, avoiding fiber breakage or uneven drafting caused by sudden speed changes. This significantly improves the yarn evenness and adapts to the processing requirements of different fiber lengths. The support block 7 is slidably connected to the inner wall of the support frame 5, allowing for flexible adjustment of the distance between the first drafting roller 2 and the second drafting roller 3 to accommodate the process requirements of different fibers. The fixed frame 6 provides stable support, ensuring the rigidity of the mechanical structure during drafting and reducing the impact of vibration on fiber quality. The first motor 8 drives the threaded rod 9 to rotate, which in turn drives the moving frame 11 and the drive rod 12 to precisely adjust the distance between the three sets of drafting rollers, achieving automated control. The adjusting rod 13 synchronously links the positions of the three sets of rollers to ensure dynamic matching of drafting force and holding force, preventing fiber slippage or excessive compression and improving processing efficiency.

[0041] Example 2

[0042] Please see Figures 1-10 Based on Embodiment 1, the surfaces of the first drafting roller 2 and the third drafting roller 4 are movably connected to the inner wall of the support block 7 via bearings. A second motor 20 is fixedly connected to one side of the support block 7, and the output end of the second motor 20 is fixedly connected to the first drafting roller 2 and the second drafting roller 3. A third motor 21 is fixedly connected inside the support frame 5, and a drive shaft 22 is fixedly connected to the output end of the third motor 21. The other end of the drive shaft 22 is fixedly connected to the second drafting roller 3. A fixed plate 23 is movably connected to the top of the first moving plate 17 via a first pin. The fixed plate 23 is movably connected to the first hydraulic rod 19 via a second pin. A first pressure sensor 24 is fixedly connected to the output end of the first hydraulic rod 19, and the other end of the pressure sensor is movably connected to the first moving plate 17. The other end of the drive rod 12 passes through the inside of the support frame 5 and is fixedly connected to the two sets of support blocks 7 respectively. The other end of the adjusting rod 13 passes through the inside of the fixed frame 6 and is fixedly connected to the two sets of fixed plates 23 respectively.

[0043] Specifically: the first roller 14 is bonded to the first drafting roller 2, the second roller 15 is bonded to the second drafting roller 3, and the third roller 16 is bonded to the third drafting roller 4. The first hydraulic rod 19 and the second hydraulic rod 25 are used to drive the first roller 14, the second roller 15, and the third roller 16 to move. The first hydraulic rod 19 adopts a servo hydraulic system and is equipped with a 0.01mm displacement sensor, which can detect the position change of the roller in real time. The first pressure sensor 24 is integrated at the end of the first hydraulic rod 19 and adopts the strain gauge measurement principle. The detection range is 0-500N, forming a closed-loop feedback control, which monitors the drafting pressure in real time and adjusts it accordingly. This avoids fiber damage due to excessive pressure or drafting failure due to insufficient pressure. It is especially suitable for the fine processing of high-count yarns or blended fibers. The system automatically matches the preset pressure curve according to the fiber type (cotton / polyester / blended) and dynamically compensates for pressure waves during the drafting process.

[0044] Example 3

[0045] Please see Figures 1-10 Based on Embodiments 1 and 2, the top of the second movable plate 18 is movably connected to the inner wall of the fixed frame 6 via a third pin. A second hydraulic rod 25 is movably connected inside the fixed frame 6. A second pressure sensor 26 is fixedly connected to the output end of the second hydraulic rod 25. The other end of the second pressure sensor 26 is movably connected to the second movable plate 18. The temperature regulating assembly includes a guide tube 27 installed on the top of the processing table 1, a heater 28 and a first temperature sensor 29 installed inside the guide tube 27, a ventilation pipe 30 installed at the bottom of the processing table 1, an air outlet pipe 31 connected to the top of the ventilation pipe 30, a second temperature sensor 32 installed inside the air outlet pipe 31, a heat dissipation pipe 33 connected to the other end of the ventilation pipe 30, a solenoid valve 34 installed on the surface of the air outlet pipe 31, a rotating rod 35 movably connected inside the ventilation pipe 30, a first pulley 36 and an exhaust fan blade 37 fixedly connected to the surface of the rotating rod 35, a second pulley 38 fixedly connected to the surface of the drive shaft 22, and a conveyor belt 39 sleeved on the surfaces of the first pulley 36 and the second pulley 38.

[0046] Specifically: Heater 28 is used to preheat the fibers to improve their flexibility; heat dissipation pipe 33 rapidly cools the fibers via exhaust fan blades 37 to prevent high-temperature damage; first temperature sensor 29 and second temperature sensor 32 are used to detect and control the temperature to ensure that the fibers are processed within the optimal process range, reducing yarn defects caused by thermal stress; the drive shaft 22 of third motor 21 drives the exhaust fan blades 37 via belt transmission, achieving efficient heat dissipation without an additional power source, saving energy and featuring a compact structure; solenoid valve 34 is used to control the opening and closing of the exhaust pipe 31 when heat dissipation of the fibers is required. When the air outlet 31 is closed, the air outlet 31 can be opened to allow flowing air to enter. When the air outlet 31 is closed, the flowing air is discharged through the ventilation pipe 30 and the heat dissipation pipe 33. The heat dissipation pipe 33 dissipates heat from the fibers after the drawing process, thus saving energy. The first belt pulley 36 and the second belt pulley 38 are connected by a conveyor belt 39 to transmit the driving force of the third motor 21. The first temperature sensor 29 is installed inside the guide tube 27 to perform preliminary detection of the temperature of the incoming fibers. The guide tube 27 is used to guide the fiber filaments.

[0047] The working principle of this invention is as follows: The operator first inserts the fiber to be processed into the guide tube 27 and places it between the first drafting roller 2 and the first slip roller 14. Then, it is inserted into the second drafting roller 3 and the second slip roller 15. After that, it is inserted into the air outlet 31 and placed between the third drafting roller 4 and the third slip roller 16. Finally, it is inserted into the heat dissipation pipe 33. At the same time, two sets of second motors 20 and third motors 21 are started. The two sets of second motors 20 drive the first drafting roller 2 and the third drafting roller 4 to rotate respectively. The third motor 21, in conjunction with the drive shaft 22, drives the second drafting roller 3 to rotate. By utilizing the different speeds of the first drafting roller 2, the second drafting roller 3, and the third drafting roller 4, the incoming fiber is drafted. The first drafting roller 2 (highest speed), the second drafting roller 3 (medium speed), and the third drafting roller 4 (lowest speed) form a three-level speed difference. The fiber is gradually stretched under the shear force between adjacent rollers. The greater the speed difference, the higher the drafting ratio, thus completing the fiber stretching process.

[0048] During the fiber drafting process, the first hydraulic rod 19 and the second hydraulic rod 25 can be activated. The first hydraulic rod 19, in conjunction with the first pressure sensor 24, applies a pushing force to the first moving plate 17. The first moving plate 17 pushes the first roller 14 and the third roller 16 downward. At the same time, the second hydraulic rod 25, in conjunction with the second pressure sensor 26, applies a pushing force to the second moving plate 18. The second moving plate 18 pushes the second roller 15 downward. By applying pressure using the first roller 14, the second roller 15, and the third roller 16, the fiber is tightly gripped to prevent slippage, ensuring that the drafting force is effectively applied to the fiber and reducing roller slippage.

[0049] During fiber stretching, the first temperature sensor 29 and the second temperature sensor 32 can be used to detect the fiber processing temperature. When the temperature of the fiber entering the first stretching roller 2 is lower than the set value, the heater 28 can be activated to preheat the fiber and increase the fiber processing temperature. After the fiber is stretched, it enters the air outlet pipe 31 and the heat dissipation pipe 33. The temperature of the initially stretched fiber is detected by the second temperature sensor 32. Then, the solenoid valve 34 is activated to open the air outlet pipe 31. While the third motor 21 drives the drive shaft 22 to rotate, it can also drive the second belt pulley 38 to rotate. The second belt pulley 38, together with the first belt pulley 36, drives the rotating rod 35 and the exhaust fan blade 37 to rotate. The exhaust fan blade 37 drives the air flow and discharges it through the air outlet pipe 31 to dissipate heat from the fiber and keep the fiber at a suitable processing temperature.

[0050] When stretching different fibers, the spacing between the first drafting roller 2, the second drafting roller 3, and the third drafting roller 4 needs to be adjusted. During adjustment, two sets of first motors 8 can be started respectively. The two sets of first motors 8 drive two sets of threaded rods 9 to rotate. The threaded rods 9, in conjunction with the moving tube 10, drive the moving frame 11, the drive rod 12, and the adjusting rod 13 to move. The drive rod 12 is used to drive the two sets of support blocks 7 to move and adjust the position of the first drafting roller 2 and the second drafting roller 3. The adjusting rod 13 is used to drive the two sets of fixed plates 23 to move. The fixed plates 23, in conjunction with the first moving plate 17, drive the first roller 14 and the second roller 15 to move and adjust the fiber stretching spacing to adapt to different fiber processing requirements and improve the fiber processing effect.

[0051] The preferred embodiments of the present invention disclosed above are only for the purpose of illustrating the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation described herein. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can better understand and utilize the present invention.

Claims

1. A drafting structure for a spinning frame, comprising a processing table (1), characterized in that: The processing table (1) is provided with a first drafting roller (2), a second drafting roller (3) and a third drafting roller (4) on its top; A support assembly is provided on one side of the processing table (1). The support assembly includes a support frame (5) and a fixing frame (6) installed on the top of the processing table (1). A support block (7) is slidably connected inside the support frame (5). The support assembly supports the movement of the first stretching roller (2) and the second stretching roller (3). The processing table (1) is provided with a drive assembly on top. The drive assembly includes two sets of first motors (8) on top of the processing table (1), a threaded rod (9) installed at the output end of the first motor (8), a moving tube (10) threaded to the surface of the threaded rod (9), a moving frame (11) installed on one side of the moving tube (10), a drive rod (12) and an adjusting rod (13) installed on the other side of the moving frame (11). The fiber stretching distance is adjusted by the drive assembly. The fixed frame (6) is equipped with a pressure regulating component. The pressure regulating component includes a first roller (14), a second roller (15) and a third roller (16) located at the bottom of the fixed frame (6). The surfaces of the first roller (14) and the third roller (16) are movably connected to a first moving plate (17). The surface of the second roller (15) is movably connected to a second moving plate (18). The tops of the first moving plate (17) and the second moving plate (18) are equipped with a first hydraulic rod (19). The fiber stretching pressure is adjusted by the pressure regulating component. A temperature regulating component is provided on one side of the processing table (1) to regulate the processing temperature of the fiber.

2. The drafting structure of a spinning frame according to claim 1, characterized in that: The surfaces of the first drafting roller (2) and the third drafting roller (4) are movably connected to the inner wall of the support block (7) through bearings. A second motor (20) is fixedly connected to one side of the support block (7), and the output end of the second motor (20) is fixedly connected to the first drafting roller (2) and the second drafting roller (3).

3. The drafting structure of a spinning frame according to claim 1, characterized in that: The support frame (5) is internally fixedly connected to a third motor (21), and the output end of the third motor (21) is fixedly connected to a drive shaft (22). The other end of the drive shaft (22) is fixedly connected to the second stretching roller (3).

4. The drafting structure of a spinning frame according to claim 1, characterized in that: A fixed plate (23) is movably connected to the top of the first movable plate (17) via a first pin. The fixed plate (23) is movably connected to the first hydraulic rod (19) via a second pin. A first pressure sensor (24) is fixedly connected to the output end of the first hydraulic rod (19). The other end of the pressure sensor is movably connected to the first movable plate (17).

5. The drafting structure of a spinning frame according to claim 1, characterized in that: The other end of the drive rod (12) passes through the inside of the support frame (5) and is fixedly connected to the two sets of support blocks (7) respectively. The other end of the adjustment rod (13) passes through the inside of the fixed frame (6) and is fixedly connected to the two sets of fixed plates (23) respectively.

6. The drafting structure of a spinning frame according to claim 1, characterized in that: The top of the second movable plate (18) is movably connected to the inner wall of the fixed frame (6) via a third pin. The fixed frame (6) is movably connected to a second hydraulic rod (25). The output end of the second hydraulic rod (25) is fixedly connected to a second pressure sensor (26). The other end of the second pressure sensor (26) is movably connected to the second movable plate (18).

7. The drafting structure of a spinning frame according to claim 1, characterized in that: The temperature control assembly includes a guide tube (27) installed on the top of the processing table (1), a heater (28) and a first temperature sensor (29) installed inside the guide tube (27), a ventilation tube (30) installed at the bottom of the processing table (1), an air outlet tube (31) connected to the top of the ventilation tube (30), a second temperature sensor (32) installed inside the air outlet tube (31), a heat dissipation tube (33) connected to the other end of the ventilation tube (30), and a solenoid valve (34) installed on the surface of the air outlet tube (31).

8. The drafting structure of a spinning frame according to claim 7, characterized in that: The ventilation pipe (30) is movably connected to a rotating rod (35), and a first pulley (36) and an exhaust fan blade (37) are fixedly connected to the surface of the rotating rod (35).

9. The drafting structure of a spinning frame according to claim 8, characterized in that: The drive shaft (22) is fixedly connected to a second pulley (38), and a conveyor belt (39) is sleeved on the surfaces of the first pulley (36) and the second pulley (38).

10. A method of using a drafting structure for a spinning frame, based on the drafting structure of a spinning frame according to any one of claims 1-9, characterized in that, Includes the following steps; S1: The worker first inserts the fiber to be processed into the guide tube (27) and places it between the first drafting roller (2) and the first slip roller (14), then inserts it between the second drafting roller (3) and the second slip roller (15), then inserts it into the air outlet pipe (31), and places it between the third drafting roller (4) and the third slip roller (16), and finally inserts it out through the heat dissipation pipe (33). At the same time, two sets of second motors (20) and third motors (21) are started. The two sets of second motors (20) drive the first drafting roller (2) and the third drafting roller (31) respectively. Roller (4) rotates, and the third motor (21) drives the second drafting roller (3) to rotate in conjunction with the drive shaft (22). The different speeds of the first drafting roller (2), the second drafting roller (3) and the third drafting roller (4) are used to draft the incoming fiber. The first drafting roller (2) (highest speed), the second drafting roller (3) (medium speed) and the third drafting roller (4) (lowest speed) form a three-level speed difference. The fiber is gradually stretched by shear force between adjacent rollers. The greater the speed difference, the higher the drafting ratio, and the fiber stretching process is completed. S2: During the fiber stretching process, the first hydraulic rod (19) and the second hydraulic rod (25) can be activated. The first hydraulic rod (19) works with the first pressure sensor (24) to apply a pushing force to the first moving plate (17). The first moving plate (17) pushes the first roller (14) and the third roller (16) downward. While the second hydraulic rod (25) moves, it works with the second pressure sensor (26) to apply a pushing force to the second moving plate (18). The second moving plate (18) pushes the second roller (15) downward. By using the first roller (14), the second roller (15), and the third roller (16) to apply pressure, the fiber is tightly gripped to prevent slippage, ensuring that the stretching force is effectively applied to the fiber and reducing roller slippage. S3: While the fiber is being stretched, the first temperature sensor (29) and the second temperature sensor (32) can be used to detect the fiber processing temperature. When the temperature of the first stretching roller (2) is lower than the set value, the heater (28) can be started to preheat the fiber and increase the fiber processing temperature. After the fiber is stretched, it enters the air outlet pipe (31) and the heat dissipation pipe (33). The temperature of the initially stretched fiber is detected by the second temperature sensor (32). Then, the solenoid valve (34) is started to open the air outlet pipe (31). While the third motor (21) drives the drive shaft (22) to rotate, it can also drive the second belt pulley (38) to rotate. The second belt pulley (38) cooperates with the first belt pulley (36) to drive the rotating rod (35) and the exhaust fan blade (37) to rotate. The exhaust fan blade (37) drives the air flow and is discharged through the air outlet pipe (31) to dissipate heat from the fiber and keep the fiber at a suitable processing temperature. S4: When stretching different fibers, the spacing between the first stretching roller (2), the second stretching roller (3), and the third stretching roller (4) needs to be adjusted. During adjustment, two sets of first motors (8) can be started respectively. The two sets of first motors (8) drive two sets of threaded rods (9) to rotate. The threaded rods (9) cooperate with the moving tube (10) to drive the moving frame (11), the drive rod (12), and the adjusting rod (13) to move. The drive rod (12) is used to drive two sets of support blocks (7) to move and adjust the position of the first stretching roller (2) and the second stretching roller (3). The adjusting rod (13) is used to drive two sets of fixed plates (23) to move. The fixed plate (23) cooperates with the first moving plate (17) to drive the first roller (14) and the second roller (15) to move and adjust the stretching spacing of the fiber to adapt to different fiber processing requirements and improve the fiber processing effect.

Images