A tension self-adaptive yarn feeding device for cotton yarn production

Abstract

The application discloses a tension self-adaptive yarn feeding device for cotton yarn production and relates to the technical field of yarn feeding devices.The tension self-adaptive yarn feeding device comprises a bearing plate frame which is installed on the rack of a cotton yarn production workshop through a plurality of assembly rails fixed on one side; two tension pulleys which are respectively assembled at the top end and the bottom end of the bearing plate frame and can be displaced along the extension direction of the stroke gap; and a plurality of adjusting assemblies which are arranged on the bearing plate frame and are used for adjusting the position of the tension pulleys. The adjusting assembly is provided with a track pin and a spiral track, the axial linear displacement of an electric push rod is directly converted into the rotary motion of a transmission column, the motion amplification and direction transmission are further realized through a gear pair, a continuous motion conversion chain of linear driving-rotary output-displacement adjustment is constructed, the traditional mode of relying on multistage connecting rods or single screw adjustment is broken through, the adjusting process of the tension pulley has higher response sensitivity and transmission stability, and the tension adjustment precision is obviously ensured.

Description

Technical Field

[0001] This invention relates to the field of yarn feeding device technology, specifically a tension adaptive yarn feeding device for cotton yarn production. Background Technology

[0002] In the cotton yarn production process, the tension stability of the yarn feeding process directly affects the yarn quality and production efficiency. Traditional yarn feeding devices often suffer from yarn breakage, loosening, or tangling due to inaccurate tension control, which increases the defect rate and downtime for adjustment.

[0003] A search revealed Chinese invention patent application CN108313826A, which proposes "an active adjustable tension yarn feeding device and its working method." The device includes a yarn spool, a spring mechanism, a DC motor gear pair mechanism, and a ratchet mechanism. The spring mechanism is used to adjust the yarn feeding tension, the DC motor gear pair mechanism retracts or feeds the yarn from the spool, and the ratchet mechanism works in conjunction with the spool to rotate forward or backward. The outer contact of the spring mechanism contacts contact point one or contact point two on the inner side of the spool, thereby determining whether the DC motor is rotating forward or backward. This satisfies the need for yarn feeding tension adjustment and solves the problem of yarn tension fluctuation during the feeding process.

[0004] However, in actual use, the aforementioned disclosed device and similar prior art devices mainly rely on the energy storage and release of elastic elements or the forward and reverse rotation of motors to achieve tension adjustment. Their tension adjustment process is essentially still an indirect adjustment mode, which makes it difficult to achieve precise control of the position of the tensioning component, resulting in a lagging tension adjustment response and insufficient stability. Summary of the Invention

[0005] The purpose of this invention is to provide a tension-adaptive yarn feeding device for cotton yarn production, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a tension-adaptive yarn feeding device for cotton yarn production, comprising:

[0007] The load-bearing frame is installed on the machine frame in the cotton yarn production workshop by several assembly trays fixed on one side;

[0008] Two tensioning rollers are respectively installed at the top and bottom stroke notches inside the bearing plate frame, and can be displaced along the extension direction of the stroke notches;

[0009] The power unit, installed at one end in the middle of the support plate frame, is used to provide rotational power to drive the cotton yarn conveyor.

[0010] The shifting assembly is installed at the other end of the middle of the bearing plate frame and is connected to the power assembly for transmission. It is used to adjust the transmission ratio according to the specifications of the cotton yarn.

[0011] The cotton yarn is wound around the surfaces of two tensioning wheels. When the power unit drives the machine, the shifting component drives the cotton yarn to perform a yarn feeding action.

[0012] The adjustment component is installed on the other side of the support plate frame and is linked to the tension wheel, shifting component and power component respectively;

[0013] The shifting assembly controls the shifting according to the specifications of the cotton yarn. During the shifting process, the two tensioning wheels are adjusted by adjusting the component to move along the direction of the stroke gap, so that the tension of the cotton yarn between the two tensioning wheels is adjusted.

[0014] As a further preferred embodiment of this technical solution, the power assembly includes:

[0015] The transmission rod is set in the middle of the support plate frame through an insertion hole at one end of the support plate frame, and its two ends extend out to the two sides of the support plate frame respectively.

[0016] The transmission arm has one end fixed to one end of the transmission rod and the other end equipped with a rotating motor.

[0017] The connecting shaft is fixedly connected at one end to the drive shaft of the rotating motor, and the middle end is located inside the support plate frame, where a storage groove wheel and a drive gear are fixed in sequence. The other end extends to one side of the support plate frame and is linked with the adjustment component.

[0018] As a further preferred embodiment of this technical solution, a storage hole is provided at the middle of one side of the bearing plate frame, and the shifting assembly includes:

[0019] A positioning frame is fixed to one side of the support plate frame near the storage hole;

[0020] An electric push rod is installed inside the positioning frame, and the rod has a rotation function;

[0021] The linkage assembly ring is rotatably connected to the inside of the support plate frame through the storage hole;

[0022] A shift gear set is fixed to one end of the actuating rod and is adapted to the driving gear;

[0023] Several linked hinges, one end of which is evenly fixed to the other end of the action rod;

[0024] Several telescopic rods are arranged between the linkage assembly ring and the linkage folding arm. Each telescopic rod corresponds to a linkage folding arm, and the two ends of the telescopic rod are fixed to one side of the linkage assembly ring and one side of the linkage folding arm, respectively.

[0025] The conveyor wheel is sleeved on the outside of the shift gear set and has several movable stroke grooves inside. The position and specifications of the movable stroke grooves are adapted to the linkage articulated arm.

[0026] The other end of the linkage folding arm is movably connected to the inside of the movable stroke groove.

[0027] As a further preferred embodiment of this technical solution, the adjustment component includes:

[0028] A sturdy folding rod is fixed at one end to the other side of the load-bearing plate frame;

[0029] The top of the track cylinder is fixed to the other end of the sturdy folding rod, and a spiral track is provided on its surface.

[0030] A drive column is located inside the track cylinder, and a track pin adapted to the spiral track is fixed on its surface;

[0031] A pin-connecting rod, one end of which is fixed to the bottom of the transmission column, and the other end of which passes through the bearing plate frame and is fixed to the electric push rod;

[0032] The drive gear is rotatably connected to the other side of the support plate frame, and has an internal mounting groove that matches the pin body on the surface of the pin-connecting rod.

[0033] The linkage gear is rotatably connected to the other side of the support plate frame and is adapted to the drive gear;

[0034] The transmission disc is fixed to the top of the linkage gear, and traction arms are hinged to both ends of its surface.

[0035] One end of each of the two traction arms is fixed with a mounting rod between the travel notch and the tensioning wheel.

[0036] As a further preferred embodiment of this technical solution, a connecting wheel is fixed at the center of the top of the transmission disc, and a drive wheel with a shaft is fixed at the end of the transmission rod away from the rotating motor. A transmission belt is fitted between the drive wheel with the shaft and the connecting wheel.

[0037] As a further preferred embodiment of this technical solution, multiple stroke notches are provided, each corresponding to the power component and two tensioning wheels. The bearing plate frame has two movable grooves with corresponding stroke notch specifications and positions inside, and the movable grooves are adapted to the mounting rod.

[0038] As a further preferred embodiment of this technical solution, a spring is fixed at the bottom of the track cylinder, and the bottom of the spring is in contact with the top of the transmission column.

[0039] As a further preferred embodiment of this technical solution, the tensioning wheel has an annular anti-slip groove on its surface, and a wear-resistant rubber layer is attached to the groove to increase the friction between it and the cotton yarn.

[0040] As a further preferred embodiment of this technical solution, the assembly platform has an L-shaped structure. The horizontal section of the assembly platform is welded and fixed to the bearing plate frame, and the vertical section of the assembly platform has elongated mounting holes, which are connected to the frame by bolts.

[0041] As a further preferred embodiment of this technical solution, the outer surface of the support plate frame is coated with an antistatic coating to reduce the adverse effects of static electricity on cotton yarn in the workshop environment. The exposed corners of the support plate frame are all rounded to improve safety during operation.

[0042] Compared with the prior art, the beneficial effects of the present invention are:

[0043] This tension adaptive yarn feeding device for cotton yarn production, by adopting a structure in which a track pin and a spiral track are used in the adjustment component, directly converts the axial linear displacement of the electric push rod into the rotational motion of the transmission column, and further realizes motion amplification and direction transmission through a gear pair. This creates a continuous motion conversion chain from linear drive to rotational output to displacement adjustment, breaking through the traditional method of adjustment relying on multi-stage linkages or single screws. This gives the tension wheel adjustment process higher response sensitivity and transmission stability, and significantly ensures the tension adjustment accuracy.

[0044] Secondly, by decoupling the tension adjustment path from the power drive path in the structure and adopting a phased operation mode of "adjust first, drive later" in the control logic, the tension wheel position adjustment is completed in a state of no power interference, avoiding the adjustment error and structural vibration problem caused by power coupling in traditional equipment, and making the tension setting independent and deterministic.

[0045] Furthermore, the axial displacement of the shift gear set changes the meshing position, thereby altering the transmission ratio. This, combined with the adjustment of the tension wheel position, enables the device to automatically match the traction speed and tension according to different specifications of cotton yarn, achieving a synergistic control effect of adaptive transmission ratio and synchronous tension adjustment. Compared to a single speed regulation or a single tensioning structure, this method of coupling mechanical shifting with tension control ensures the equipment's adaptability to multiple working conditions. Attached Figure Description

[0046] Figure 1 This is the principal axonometric drawing of the present invention;

[0047] Figure 2 This is a side view of the present invention;

[0048] Figure 3 This is the auxiliary isometric drawing of the present invention;

[0049] Figure 4 This is an exploded view of the present invention;

[0050] Figure 5 The structural composition diagram of the adjusted components of this invention;

[0051] Figure 6 for Figure 5 A magnified view of part A in the middle;

[0052] Figure 7 This is a structural composition diagram of the power assembly of the present invention;

[0053] Figure 8 This is a structural diagram of the shifting assembly of the present invention.

[0054] In the diagram: 1. Bearing plate frame; 2. Assembly platform; 3. Adjustment assembly; 301. Transmission disc; 302. Connecting wheel; 303. Traction arm; 304. Drive wheel with shaft; 305. Transmission belt; 306. Linkage gear; 307. Stabilizing lever; 308. Drive gear; 309. Rail pin; 310. Connecting rod with pin; 311. Mounting slot; 312. Transmission column; 313. Spring; 314. Rail cylinder; 4. Tensioner wheel; 5. Power assembly; 501. Rotary wheel. 502. Drive motor; 503. Storage groove wheel; 504. Drive gear; 505. Connecting shaft; 506. Transmission rod; 507. Transmission arm; 6. Stroke notch; 7. Shifting assembly; 701. Electric push rod; 702. Linkage assembly ring; 703. Stroke groove; 704. Conveyor wheel; 705. Shifting gear set; 706. Actuating rod; 707. Linkage folding arm; 708. Telescopic rod; 709. Positioning frame; 8. Insertion hole; 9. Stroke groove; 10. Storage hole. Detailed Implementation

[0055] 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.

[0056] Before understanding the technical solution proposed in this application, it should be clear that the actual application scenario of this technical solution is the production environment in the cotton yarn production workshop where precise tension control and continuous conveying of cotton yarns of different specifications are required. It is especially suitable for automated yarn feeding production lines and textile process scenarios with high requirements for tension and conveying accuracy.

[0057] Example 1: To ensure the stable installation and safe operation of the yarn feeding device in the workshop, this example provides a core layout scheme for the bearing plate frame 1 and the assembly platform 2.

[0058] Specifically, in this embodiment, the support plate frame 1 is mounted on the machine frame by several assembly trays 2 fixed on one side. The assembly trays 2 have an L-shaped structure, with the horizontal section welded to the support plate frame 1 and the vertical section having elongated mounting holes and being connected to the machine frame by bolts. The outer surface of the support plate frame 1 is coated with an anti-static coating to reduce the adverse effects of static electricity in the workshop environment on the cotton yarn. The exposed corners are rounded to improve operational safety. It should be added that this embodiment ensures the stability and safety of the device, while also facilitating installation and maintenance on different machine frame structures.

[0059] Example 2: To achieve precise tension adjustment of cotton yarn, this example provides the layout and structural design of the tensioning wheel 4.

[0060] Specifically, in this embodiment, two tensioning wheels 4 are respectively mounted at the top and bottom stroke notches 6 inside the bearing plate frame 1, and can move along the extension direction of the stroke notches 6. The surface of the tensioning wheel 4 is provided with an annular anti-slip groove, and the groove is covered with a wear-resistant rubber layer to increase the friction with the cotton yarn, so as to ensure the stability and tension consistency of the cotton yarn during the conveying process. It should be noted that the tensioning wheel 4 is fixedly connected to the mounting rod through the stroke notch 6 to realize the smooth transmission of the tension adjustment action, prevent the slippage or running of yarn, and improve the yarn feeding accuracy.

[0061] Example 3: To drive the continuous conveying of cotton yarn, this example provides the core structural layout of the power component 5.

[0062] Specifically, refer to Figures 1-8 As can be seen, in this embodiment, the power assembly 5 includes a transmission rod 505, a transmission arm 506, a rotary motor 501, a connecting shaft 504, a storage grooved wheel 502, and a drive gear 503. The transmission rod 505 is located in the middle through the insertion hole 8 at one end of the support plate frame 1, with both ends extending out from both sides of the support plate frame 1. One end of the transmission arm 506 is fixed to the transmission rod 505, and the rotary motor 501 is installed at the other end. One end of the connecting shaft 504 is fixedly connected to the drive shaft of the rotary motor 501, and the storage grooved wheel 502 and the drive gear 503 are fixed in sequence at the middle end. The other end extends to one side of the support plate frame 1 and is linked with the adjustment assembly 3, so as to realize the smooth transmission of power between the tension wheel 4 and the shifting assembly 7. This embodiment ensures stable power output and can meet the requirements of high-speed yarn feeding and tension adjustment.

[0063] Example 4: To adapt to the conveying needs of cotton yarns of different specifications, this example provides the structure and linkage layout of the shifting component 7.

[0064] Specifically, refer to Figures 1-8As can be seen, in this embodiment, the shift assembly 7 includes a positioning frame 709, an electric push rod 701, an actuating rod 706, a linkage assembly ring 702, a shift gear set 705, a plurality of linkage folding arms 707, a plurality of telescopic rods 708, and a conveyor wheel 704.

[0065] The positioning frame 709 is fixed to one side of the support plate frame 1 near the storage hole 10. The electric push rod 701 is installed inside the positioning frame 709. The actuating rod 706 has a rotation function. The linkage assembly ring 702 is rotatably connected to the inside of the support plate frame 1 through the storage hole 10. The shift gear set 705 is fixed to one end of the actuating rod 706 and meshes with the driving gear 503. In addition, one end of the linkage folding arm 707 is fixed to the other end of the actuating rod 706. The telescopic rod 708 connects the linkage assembly ring 702 and the linkage folding arm 707. The conveying wheel 704 is sleeved on the outside of the shift gear set 705 and has a movable stroke groove 703 inside. The other end of the linkage folding arm 707 is movably connected to the movable stroke groove 703 to realize the smooth transmission of the shifting action. In addition, it should be added that in this embodiment, the shifting component 7 controls the shifting according to the cotton yarn specification. At the same time, the tensioning wheel 4 is adjusted to move along the stroke notch 6 by the adjustment component 3 to realize automatic tension adjustment.

[0066] Example 5: In order to achieve smooth movement of the tensioning wheel 4 along the stroke notch 6 and precise tension control, this example provides a structural scheme for the adjustment component 3.

[0067] Specifically, refer to Figures 1-8 As can be seen, in this embodiment, the adjustment component 3 includes a stabilizing folding rod 307, a track cylinder 314, a transmission column 312, a pin connecting rod 310, a drive gear 308, a linkage gear 306, a transmission disc 301, and a traction arm 303.

[0068] One end of the stabilizing lever 307 is fixed to the bearing plate frame 1, and the top of the track cylinder 314 is fixed to the other end of the stabilizing lever 307. A spiral track is opened on the surface. The transmission column 312 is placed inside the track cylinder 314, and the track pin 309 is fixed on the surface. One end of the pin connecting rod 310 is fixed to the bottom of the transmission column 312, and the other end passes through the bearing plate frame 1 and is fixed to the electric push rod 701. It should be noted that the drive gear 308 is rotatably connected to the bearing plate frame 1 and has a mounting groove 311 that cooperates with the pin connecting rod 310. The linkage gear 306 meshes with the drive gear 308. The transmission disc 301 is fixed to the top of the linkage gear 306, and the two ends are hinged to the traction arm 303. One end of the traction arm 303 is fixedly connected to the tension wheel 4 through the stroke notch 6, so as to realize the smooth transmission of power from the shift component 7 to the tension wheel 4. It should also be noted that the bottom of the track cylinder 314 is fixed with a spring 313, and the bottom of the spring 313 contacts the top of the transmission column 312, providing an elastic return function for the adjustment component 3.

[0069] Example 6: To achieve uniform power transmission, this example provides a connection scheme between the transmission disc 301 and the transmission belt 305.

[0070] Specifically, refer to Figures 1-8 As can be seen, in this embodiment, the top center of the transmission disc 301 is fixed with a connecting wheel 302, the end of the transmission rod 505 away from the rotating motor 501 is fixed with a drive wheel 304 with a shaft, and a transmission belt 305 is sleeved between the connecting wheel 302 and the drive wheel 304 with a shaft. The power is evenly transmitted from the power component 5 to the tensioning wheel 4 through the transmission belt 305, so as to realize the coordination of tension adjustment and conveying action. This embodiment ensures continuous and stable power transmission and improves the overall working efficiency of the device.

[0071] Example 7: To ensure that the tensioning wheel 4 moves smoothly along the stroke notch 6, this example provides a matching design between the stroke notch 6 and the movable groove 9.

[0072] Specifically, refer to Figures 1 to 8 As can be seen, in this embodiment, there are multiple stroke gaps 6, which respectively convey the wheel 704 to the power component 5 and the two tensioning wheels 4. The bearing plate frame 1 has two movable grooves 9 inside that correspond to the specifications and positions of the stroke gaps 6. The movable grooves 9 cooperate with the mounting rod to realize the smooth movement of the tensioning wheel 4 during gear shifting and tension adjustment, so as to ensure the accuracy and stability of the cotton yarn tension adjustment.

[0073] Example 8: To improve the friction during the cotton yarn conveying process, this example provides an optimized wheel surface structure scheme for the tensioning wheel 4.

[0074] It should be noted that in this embodiment, an annular anti-slip groove is opened on the surface of the tensioning wheel 4, and a wear-resistant rubber layer is attached to the groove to increase the friction between it and the cotton yarn, ensure the stability of the cotton yarn during the conveying process, prevent yarn slippage or slippage, improve yarn feeding accuracy, and meet the needs of high-speed production lines.

[0075] Furthermore, it should be noted that during operation, the tension adjustment process and the yarn feeding drive process are performed independently, with tension adjustment taking precedence over power output. During tension adjustment, the rotating motor 501 is inactive, and the entire mechanism is stationary or in a low-speed locked state to avoid transmission interference. First, the electric push rod 701 is driven by an external controller, causing an axial change in the shift gear set 705, thereby altering its meshing position with the drive gear 503 and achieving preset switching between different gears. Simultaneously, the linkage folding arm 707 moves within the movable stroke groove 703 inside the conveyor wheel 704. Relative sliding causes the telescopic rod 708 to extend and retract accordingly to adapt to the structural adjustments caused by the change in position of the shift gear set 705. During this process, the actuating rod 706 does not rely on the rotational motor 501 for rotation, but instead undergoes axial extension and retraction displacement under the action of the electric push rod 701. The axial displacement of the electric push rod 701 directly drives the pin-connected rod 310 to move synchronously axially. The pin-connected rod 310 transmits this displacement to the transmission column 312, causing the transmission column 312 to move axially inside the track cylinder 314. Since the surface of the transmission column 312 is provided with a track pin 309, and the inner wall of the track cylinder 314 is provided with a spiral track that matches the track pin 309, the transmission column 312 is equipped with a track pin 309. When the transmission column 312 moves axially, the track pin 309 moves along the spiral track, thereby forcing the transmission column 312 to rotate around its own axis, realizing the conversion of axial displacement into rotational motion. The rotation of the transmission column 312 further drives the drive gear 308 to rotate. The drive gear 308 meshes with the linkage gear 306, causing the linkage gear 306 to rotate synchronously, which in turn drives the transmission disk 301 to rotate. Since the drive gear 308 is a large gear and the linkage gear 306 is a small gear, the speed-increasing transmission ratio formed between the two can convert the low-speed rotation of the drive gear 308 into the high-speed rotation of the linkage gear 306. The traction arms hinged on both sides of the transmission disk 301 303 then swings, transmitting the motion to the tensioning wheel 4 via the mounting rod, causing the tensioning wheel 4 to displace along the stroke notch 6, thereby changing the distance between the two tensioning wheels 4 and adjusting the tension of the cotton yarn. It is worth noting that the spring 313 at the bottom of the track cylinder 314 provides elastic support and buffering during this process, making the adjustment process smooth and reliable. In addition, since a transmission belt 305 is fitted between the connecting wheel 302 at the top of the transmission disc 301 and the shaft drive wheel 304 at the top of the transmission rod 505, the transmission rod 505 also rotates during the gear shifting process, causing the transmission arm 506 to swing, completing the displacement of the connecting shaft 504 in the stroke notch 6.

[0076] After the tension adjustment is completed, the electric push rod 701 stops moving. At this time, the shift gear set 705 is stable at the target gear, and the tensioning wheel 4 is in a position that matches the current cotton yarn specification. At this time, the device enters the yarn feeding drive stage.

[0077] During the yarn feeding process, the rotary motor 501 starts and outputs continuous rotational power. Its drive shaft drives the connecting shaft 504 to rotate synchronously. The connecting shaft 504 serves as the main power output shaft, which stably transmits torque to the drive gear 503. The drive gear 503 maintains a meshing state with the shift gear set 705, which has completed gear matching. Under this meshing relationship, the speed and torque of the drive gear 503 are transmitted to the shift gear set 705 according to the current gear ratio, thereby realizing speed matching and torque adjustment under different working conditions.

[0078] During rotation, the shift gear set 705 drives the externally mounted conveyor wheel 704 to rotate synchronously. As a transmission component directly acting on the cotton yarn, the conveyor wheel 704 maintains stable contact with the cotton yarn through its outer circumference, generating a continuous traction force on the cotton yarn during rotation, thus conveying the cotton yarn forward along a predetermined path. Simultaneously, the receiving groove wheel 502 rotates synchronously under the drive of the connecting shaft 504, guiding and organizing the cotton yarn to prevent tangling or disorder during transport.

[0079] During the yarn feeding process, the two tensioning rollers 4 are positioned at the front and rear of the cotton yarn path, respectively, to cover and hold the cotton yarn. The spacing of the tensioning rollers 4 has been determined in the previous adjustment stage, so a stable tension force is applied to the cotton yarn during the conveying process. The annular anti-slip groove and wear-resistant rubber layer on the surface of the tensioning rollers 4 form a high coefficient of friction with the cotton yarn, so that the cotton yarn will not slip or jump under the drive of the conveying rollers 704, thereby ensuring that the conveying speed and power output are consistent.

[0080] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended embodiments and their equivalents.

Claims

1. A tension-adaptive yarn feeding device for cotton yarn production, characterized in that, include: The load-bearing frame (1) is installed on the frame of the cotton yarn production workshop by several assembly trays (2) fixed on one side; Two tensioning wheels (4) are respectively installed at the stroke gaps (6) at the top and bottom of the inside of the bearing plate frame (1), and can be displaced along the extension direction of the stroke gaps (6); The power assembly (5) is installed at one end of the middle of the bearing plate frame (1) to provide rotational power to drive the cotton yarn conveyor; The shift assembly (7) is installed at the other end of the middle of the bearing plate frame (1) and is connected to the power assembly (5) for transmission. It is used to adjust the transmission ratio according to the specifications of the cotton yarn. The cotton yarn is wound around the wheel surface of the two tensioning wheels (4). When the power assembly (5) is driven, the shift assembly (7) drives the cotton yarn to perform the yarn feeding action. A storage hole (10) is provided at the middle of one side of the bearing plate frame (1), and the shift assembly (7) includes: The positioning frame (709) is fixed on one side of the bearing plate frame (1) near the receiving hole (10); An electric push rod (701) is installed inside the positioning frame (709), and the actuating rod (706) has a rotation function; The linkage assembly ring (702) is rotatably connected to the inside of the bearing plate frame (1) through the storage hole (10); The shift gear set (705) is fixed to one end of the actuating rod (706); Several linkage articulated arms (707) are evenly fixed at one end to the other end of the actuating rod (706); Several telescopic rods (708) are disposed between the linkage assembly ring (702) and the linkage folding arm (707). Each telescopic rod (708) corresponds to a linkage folding arm (707), and the two ends of the telescopic rod (708) are respectively fixed to one side of the linkage assembly ring (702) and one side of the linkage folding arm (707). The conveyor wheel (704) is sleeved on the outside of the shift gear set (705) and has several movable stroke grooves (703) inside. The position and specifications of the movable stroke grooves (703) are adapted to the linkage articulated arm (707). The other end of the linkage folding arm (707) is movably connected to the inside of the movable stroke groove (703); Adjustment component (3) is installed on the other side of the bearing plate frame (1) and is linked with the tension wheel (4), shift component (7) and power component (5) respectively. The shift component (7) controls the shift according to the specifications of the cotton yarn. During the shift process, the adjustment component (3) adjusts the two tension wheels (4) to move along the stroke notch (6) direction, so that the tension of the cotton yarn between the two tension wheels (4) is adjusted. The adjustment component (3) includes: A stabilizing folding rod (307) is fixed at one end to the other side of the bearing plate frame (1); The top of the track cylinder (314) is fixed to the other end of the stabilizing folding rod (307), and a spiral track is provided on its surface; The transmission column (312) is located inside the track cylinder (314), and a track pin (309) adapted to the spiral track is fixed on its surface. The connecting rod (310) with pin is fixed at one end to the bottom of the transmission column (312) and at the other end passes through the bearing plate frame (1) and is fixed to the electric push rod (701); The drive gear (308) is rotatably connected to the other side of the support plate frame (1), and has a mounting groove (311) inside that is adapted to the pin body on the surface of the pin connecting rod (310). The linkage gear (306) is rotatably connected to the other side of the support plate frame (1) and is adapted to the drive gear (308); The transmission disc (301) is fixed to the top of the linkage gear (306), and the two ends of the surface are respectively hinged with traction arms (303). One end of each of the two traction arms (303) is fixed with a mounting rod between the travel notch (6) and the tension wheel (4).

2. The tension adaptive yarn feeding device for cotton yarn production according to claim 1, characterized in that: The power assembly (5) includes: The transmission rod (505) is set in the middle of the bearing plate frame (1) through the through hole (8) opened at one end of the bearing plate frame (1), and its two ends extend out of the two sides of the bearing plate frame (1); The transmission arm (506) is fixed at one end to one end of the transmission rod (505), and a rotary motor (501) is installed at the other end. The connecting shaft (504) is fixedly connected at one end to the drive shaft of the rotating motor (501), and the middle end is located inside the bearing plate frame (1). It is fixed with a storage groove wheel (502) and a drive gear (503) in sequence. The drive gear (503) is adapted to the shift gear set (705). The other end extends to one side of the bearing plate frame (1) and is linked with the adjustment component (3).

3. The tension adaptive yarn feeding device for cotton yarn production according to claim 2, characterized in that: A connecting wheel (302) is fixed at the center of the top of the transmission disc (301), and a drive wheel (304) with a shaft is fixed at the end of the transmission rod (505) away from the rotating motor (501). A transmission belt (305) is fitted between the drive wheel (304) with a shaft and the connecting wheel (302).

4. The tension adaptive yarn feeding device for cotton yarn production according to claim 1, characterized in that: The stroke gap (6) is provided in multiple ways, corresponding to the power component (5) and two tensioning wheels (4) respectively. The bearing plate frame (1) has two movable grooves (9) with the specifications and positions of the stroke gap (6) inside. The movable grooves (9) are adapted to the mounting rod.

5. The tension adaptive yarn feeding device for cotton yarn production according to claim 1, characterized in that: A spring (313) is fixed at the bottom of the track cylinder (314), and the bottom of the spring (313) is in contact with the top of the transmission column (312).

6. The tension adaptive yarn feeding device for cotton yarn production according to claim 1, characterized in that: The tensioning wheel (4) has an annular anti-slip groove on its surface, and a wear-resistant rubber layer is attached to the groove to increase the friction between it and the cotton yarn.

7. The tension adaptive yarn feeding device for cotton yarn production according to claim 1, characterized in that: The assembly platform (2) has an L-shaped structure. The horizontal section of the assembly platform (2) is welded and fixed to the bearing plate frame (1). The vertical section of the assembly platform (2) has a long strip-shaped mounting hole and is connected to the frame by bolts.

8. The tension adaptive yarn feeding device for cotton yarn production according to claim 1, characterized in that: The outer surface of the support plate frame (1) is coated with an antistatic coating to reduce the adverse effects of static electricity on cotton yarn in the workshop environment. The exposed corners of the support plate frame (1) are all rounded to improve safety during operation.

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