A tension control device for cotton yarn twisting

Abstract

The utility model discloses a kind of tension control equipment for cotton yarn twisting, it belongs to cotton yarn twisting technical field.It mainly includes rack, and the bottom fixed connection of forming winding motor is had, winding drum is rotatably connected on rack, forming winding motor drives winding drum rotation, yarn guide power mechanism and incoming line passage are equipped in rack one side, incoming line passage end is equipped with yarn guide mechanism, yarn guide power mechanism drives yarn guide mechanism rotation, the reversing hook two that is cooperated with the outgoing line end of yarn guide mechanism is equipped on rack, and tension control mechanism and winding mechanism are fixedly connected with the top of rack, winding mechanism corresponds with winding drum.The tension control mechanism of the utility model can quickly respond yarn tension fluctuation through double regulation, effectively offset tension peak and trough, ensure that yarn tension is uniform before winding, reduce the yarn breakage, relaxation or overstretching etc.

Description

Technical Field

[0001] This utility model belongs to the field of cotton yarn twisting technology, and more specifically, it relates to a tension control device for cotton yarn twisting. Background Technology

[0002] In cotton yarn production, twisting involves rotating fibers to intertwine and bind them together, thereby improving the yarn's strength, elasticity, and morphological stability. Tension control during twisting is a core factor affecting yarn quality, breakage rate, and production efficiency. Excessive tension causes excessive yarn elongation, resulting in permanent deformation or even breakage, while also increasing yarn hairiness, affecting its appearance and performance. Insufficient tension causes the yarn to become loose and tangled, affecting winding and forming, and also leads to a loose yarn structure, reducing yarn strength and abrasion resistance.

[0003] Chinese patent publication number "CN221071775U" discloses a tension control device for cotton yarn twisting. The tension mechanism can adjust the tension of the cotton yarn body to improve its stability and make the tension more uniform. By rotating the handle, the threaded rod rotates on the box, causing the sliding plate at the bottom of the threaded rod to slide in the square box. This causes the sliding plate to move downward. A connecting rod is hinged to the sliding plate, and a roller is hinged to the connecting rod. When the sliding plate moves downward, the connecting rod can move the roller to both sides, thereby stretching the cotton yarn body to both sides and increasing the tension on the cotton yarn body.

[0004] However, the above structure still has the following shortcomings: controlling the tension by manual adjustment makes it difficult to respond in real time to the dynamic tension changes of the cotton yarn during the conveying process, such as tension fluctuations caused by uneven cotton yarn thickness or fluctuations in conveying speed, which can easily lead to a lag in tension adjustment and make it impossible to guarantee the uniformity of the twisted cotton yarn. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a tension control device for twisting cotton yarn. Its tension control mechanism can quickly respond to yarn tension fluctuations through dual adjustment, effectively offset tension peaks and valleys, ensure uniform yarn tension before winding, reduce problems such as yarn breakage, loosening or overstretching caused by uneven tension, and improve the physical properties of finished yarn such as strength and elasticity stability.

[0006] The aforementioned tension control device for cotton yarn twisting includes a frame, a forming and winding motor fixedly connected to the bottom of the frame, a winding drum rotatably connected to the frame, the forming and winding motor driving the winding drum to rotate, a yarn guiding power mechanism and a yarn inlet channel provided on one side of the frame, a yarn guiding mechanism provided at the end of the yarn inlet channel, the yarn guiding power mechanism driving the yarn guiding mechanism to rotate, a reversing hook two provided on the frame that cooperates with the yarn outlet end of the yarn guiding mechanism, and a tension control mechanism and a winding mechanism fixedly connected to the top of the frame, the winding mechanism corresponding to the winding drum.

[0007] Preferably, a small pulley is fixedly connected to the power output end of the forming and winding motor, a bearing seat is fixedly connected to the frame, a rotating shaft is rotatably connected inside the bearing seat, a large pulley is fixedly connected to one end of the rotating shaft, the small pulley is connected to the large pulley through a transmission belt, and the other end of the rotating shaft is fixedly connected to the winding drum.

[0008] Preferably, the winding mechanism includes a reciprocating lead screw, a guide shaft, and a winding motor. The two ends of the reciprocating lead screw are rotatably connected to a rotating seat, which is fixedly connected to the frame. The two ends of the guide shaft are fixedly connected to the rotating seat. A lead screw nut is slidably connected to both the reciprocating lead screw and the guide shaft. One end of the reciprocating lead screw passes through the rotating seat and is fixedly connected to a small gear. A large gear is rotatably connected to the rotating shaft. The winding motor drives the large gear to rotate, and the large gear meshes with the small gear.

[0009] Preferably, a vertical plate is fixedly connected to the frame, a rotating shaft passes through the vertical plate, a central rotating gear is rotatably connected to the vertical plate, a large gear drives a small gear to rotate through the central rotating gear, a transmission pulley is fixedly connected to one side of the large gear, a transmission pulley is fixedly connected to the output end of the winding motor, and the transmission pulley is connected to the transmission pulley through a transmission belt.

[0010] Preferably, the yarn guiding power mechanism is fixedly connected to the frame, a support base is fixedly connected to the frame, a yarn guiding shaft is provided through the support base, an inlet channel is opened in the yarn guiding shaft, a driven gear is fixedly connected to one end of the yarn guiding shaft, and a driving gear that meshes with the driven gear is provided at the power output end of the yarn guiding power mechanism; the yarn guiding mechanism is located at the other end of the yarn guiding shaft.

[0011] Preferably, the yarn guiding mechanism includes an active yarn guiding wheel, which is fixedly connected to the yarn guiding shaft. The upper and lower ends of the active yarn guiding wheel are respectively provided with a first yarn guiding wheel and a second yarn guiding wheel. Both the first yarn guiding wheel and the second yarn guiding wheel are engaged with the active yarn guiding wheel. The first yarn guiding wheel and the second yarn guiding wheel are respectively fixedly connected with yarn guiding rollers for guiding yarn.

[0012] Preferably, a vertical plate is fixedly connected to the frame, and a support shaft is provided in the middle of the first and second yarn guide wheels. The support shaft is fixedly set on the vertical plate, and the first and second yarn guide wheels are rotatably connected to the support shaft through bearings. A connecting plate is fixedly fixed at the other end of the two support shafts, and a reversing hook is fixedly connected to the connecting plate. The reversing hook corresponds to the outlet of the yarn inlet channel.

[0013] Preferably, the tension control mechanism includes a fixed plate, which is fixedly connected to the frame. The fixed plate is provided with a fixed frame 1, a fixed frame 2, and a fixed frame 3 in sequence along the yarn travel direction. A tension wheel 1 that can swing is rotatably connected to the fixed frame 1. A guide wheel 2 is provided at the top of the fixed frame 1, and the guide wheel 2 is higher than the tension wheel 1. A guide wheel 3 is provided on the fixed frame 2, and the guide wheel 2 is higher than the guide wheel 3. A tension wheel 2 that can be raised and lowered is provided on the fixed frame 3, and the tension wheel 2 is higher than the guide wheel 3.

[0014] Preferably, a swing rod is rotatably connected to the fixed frame, a tension wheel is rotatably disposed at the end of the swing rod away from the guide wheel, a connecting rod is fixedly connected to the lower end of the fixed frame, a first spring is provided between the other end of the swing rod and the connecting rod, and a support rod for installing the counterweight is fixedly connected to the other end of the swing rod.

[0015] Preferably, a sliding frame is slidably connected to the fixed frame three, the tension wheel two is rotatably mounted on the sliding frame, and a telescopic rod is provided between the bottom of the sliding frame and the fixed plate, with a second spring sleeved on the telescopic rod.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] 1. The tension control mechanism achieves two-stage tension adjustment. Tension wheel one provides the first-stage buffering through a swing rod, spring, and counterweight, while tension wheel two provides the second-stage dynamic balance through a sliding frame, telescopic rod, and spring. This dual adjustment allows for rapid response to yarn tension fluctuations, effectively offsetting tension peaks and valleys, ensuring uniform yarn tension before winding, reducing problems such as yarn breakage, slack, or overstretching caused by uneven tension, and improving the strength, elasticity, stability, and other physical properties of the finished yarn.

[0018] 2. The height difference design of the guide rollers causes the yarn to form an "S" shaped path, increasing the friction contact area, further stabilizing the tension, and adapting to the processing needs of yarns of different thicknesses and materials.

[0019] 3. The yarn guiding mechanism precisely guides the yarn path through reversing hook one and reversing hook two, avoiding yarn tangling and deviation, ensuring a smooth yarn guiding process, and reducing yarn breakage or quality defects caused by yarn entanglement; at the same time, the active yarn guiding wheel meshes with the upper and lower symmetrical yarn guiding wheels to drive the yarn guiding roller to rotate in a counter-pressure manner, combing the yarn while conveying it, effectively removing short fibers, dust, necrotic knots and other impurities attached to the surface, reducing defects in subsequent processing and improving the smoothness of the yarn. Attached Figure Description

[0020] Figure 1 This is a front structural diagram of the present invention;

[0021] Figure 2 for Figure 1 A magnified view of part A in the middle;

[0022] Figure 3 This is a schematic diagram of the tension control mechanism;

[0023] Figure 4 This is a schematic diagram of the rear structure of the present invention;

[0024] Figure 5 This is a schematic diagram showing the cooperation between the yarn guiding mechanism and the yarn guiding power mechanism;

[0025] Figure 6 This is a schematic diagram of the top structure of this utility model.

[0026] In the diagram, 1 is the frame; 101 is the bearing housing; 102 is the vertical plate; 103 is the crossbeam; and 104 is the guide wheel.

[0027] 2. Forming and winding motor; 201. Small pulley; 202. Large pulley; 203. Drive belt;

[0028] 3. Winding drum; 4. Winding mechanism; 401. Winding motor; 402. Large gear; 403. Intermediate gear; 404. Small gear; 405. Reciprocating screw; 406. Screw nut; 407. Guide shaft; 408. Winding guide wheel;

[0029] 5. Tension control mechanism; 501. Tension wheel one; 5011. Fixing frame one; 5012. Swing rod; 5013. Connecting rod; 5014. First spring; 5015. Support rod; 502. Guide wheel two; 5021. Locking frame; 503. Guide wheel three; 5031. Bracket; 5032. Fixing frame two; 504. Tension wheel two; 5041. Fixing frame three; 5042. Telescopic rod; 5043. Second spring; 5044. Sliding frame; 505. Fixing plate; 5051. Long hole; 5052. Reinforcing rib; 6. Yarn guiding mechanism; 601. Yarn guiding wheel one; 602. Active yarn guiding wheel; 603. Yarn guiding wheel two; 604. Yarn guiding roller; 605. Reversing hook one; 606. Reversing hook two; 607. Connecting plate;

[0030] 7. Yarn guiding power mechanism; 701. Driving gear; 702. Driven gear; 8. Yarn. Detailed Implementation

[0031] The present invention will be further described below with reference to the accompanying drawings:

[0032] The directional terms used in the detailed description paragraphs are only for the convenience of those skilled in the art to understand the technical solutions described in this application based on the visual orientation shown in the accompanying drawings. Unless otherwise expressly specified and limited, the terms "setting," "installation," "connection," etc., should be interpreted broadly, and those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0033] like Figures 1 to 6As shown, a tension control device for cotton yarn twisting includes a frame 1. The frame 1 provides the mounting foundation and structural support for the various components of the device, ensuring overall stability. A forming and winding motor 2 is fixedly connected to the bottom of the frame 1, and a winding drum 3 is rotatably connected to the frame 1. The winding drum 3 is used to hold the twisted yarn 8. The forming and winding motor 2 drives the winding drum 3 to rotate, providing power for the rotation of the winding drum 3. By driving its rotation, the twisted yarn 8 is wound and formed into a coil. A yarn guiding power mechanism 7 and a yarn inlet channel are provided on one side of the frame 1. A yarn guiding mechanism 6 is provided at the end of the yarn inlet channel. The yarn inlet channel is the path for the yarn 8 to enter the device, guiding the twisted yarn 8 into the yarn guiding mechanism 6. The yarn guiding mechanism 6 has a compact structure. On the one hand, it makes the tension of the twisted yarn 8 tend to be uniform; on the other hand, it can remove short fibers, dust, cotton knots and other impurities attached to the surface of the yarn 8, and at the same time, it plays a guiding function, assisting the yarn 8 to enter the winding drum 3 from the twisting device. The yarn guiding power mechanism 7 provides power to the yarn guiding mechanism 6, driving the yarn guiding mechanism 6 to rotate. The frame 1 is equipped with a reversing hook 606 that cooperates with the yarn outlet end of the yarn guiding mechanism 6. The reversing hook 606 is used to change the conveying direction of the yarn 8 so that it accurately enters the tension control mechanism 5. The tension control mechanism 5 and the winding mechanism 4 are fixedly connected to the top of the frame 1. The tension control mechanism 5 further gradually balances the tension of the yarn 8 during the twisting process through two-stage adjustment to ensure that the tension of the yarn 8 is uniform and stable before winding. The winding mechanism 4 cooperates with the winding drum 3 to make the yarn 8 evenly wound on the winding drum 3, avoiding messy winding.

[0034] like Figure 1 As shown, a small pulley 201 is fixedly connected to the power output end of the forming and winding motor 2. The small pulley 201 is connected to the large pulley 202 via a transmission belt 203. The small pulley 201 transmits the motor power to the transmission belt, which then transmits the power to the large pulley 202. A bearing seat 101 is fixedly connected to the frame 1. A rotating shaft is rotatably connected inside the bearing seat 101. The bearing seat 101 supports the rotating shaft, reduces friction during rotation, and ensures stable rotation. One end of the rotating shaft is fixedly connected to the large pulley 202, and the other end is fixedly connected to the winding drum 3. The rotating shaft acts as a power transmission medium, transmitting the power from the large pulley 202 to the winding drum 3. The large pulley 202 and the small pulley 201 form a speed ratio, which reduces speed to match the required winding speed.

[0035] like Figure 6As shown, the winding mechanism 4 includes a reciprocating screw 405, a guide shaft 407, and a winding motor 401. The reciprocating screw 405 converts the rotational motion output by the winding motor 401 into linear reciprocating motion. The winding motor 401 provides the power source for the reciprocating motion, and the guide shaft 407 restricts the circumferential rotation of the screw nut 406 to ensure linear movement accuracy. Rotary seats are rotatably connected to both ends of the reciprocating screw 405, supporting the screw 405 and allowing it to rotate freely. The rotating seats are fixedly connected to the frame 1. Both ends of the guide shaft 407 are fixedly connected to the rotating seats. The guide shaft 407 is parallel to the reciprocating screw 405, providing rigid guidance for the screw nut 406. The screw nut 406 is slidably connected to both the reciprocating screw 405 and the guide shaft 407. A winding guide wheel 408 is fixedly connected to the screw nut 406, driving the winding guide wheel 408 to reciprocate at a uniform speed along the axial direction of the winding drum 3. One end of the reciprocating lead screw 405 passes through the rotating seat and is fixedly connected to a small gear 404. A large gear 402 is rotatably connected to the rotating shaft. The wound motor 401 drives the large gear 402 to rotate, and the large gear 402 meshes with the small gear 404. The large gear 402 transmits power to the reciprocating lead screw 405 through the small gear 404.

[0036] Specifically, a vertical plate 102 is fixedly connected to the frame 1, and the rotating shaft passes through the vertical plate 102. The vertical plate 102 enhances the supporting rigidity of the rotating shaft and prevents it from deflecting. In this embodiment, a central gear 403 is rotatably connected to the vertical plate 102. The large gear 402 drives the small gear 404 to rotate through the central gear 403. That is, the large gear 402 meshes with the central gear 403, and the central gear 403 meshes with the small gear 404, thereby realizing multi-stage speed change and ensuring that the rotational speed of the reciprocating screw 405 matches the winding speed.

[0037] Furthermore, a first transmission pulley is fixedly connected to one side of the large gear 402, and a second transmission pulley is fixedly connected to the output end of the wound motor 401. The second transmission pulley is connected to the first transmission pulley via a transmission belt. In this embodiment, the transmission belt effectively isolates the motor vibration and protects the gear transmission system.

[0038] like Figure 4 As shown, the yarn guiding power mechanism 7 is fixedly connected to the frame 1. A support base is fixedly connected to the frame 1, and a yarn guiding shaft is installed through the support base. The addition of the support base to fix the yarn guiding shaft ensures the radial stability of the yarn guiding shaft. A yarn inlet channel is opened inside the yarn guiding shaft. A driven gear 702 is fixedly connected to one end of the yarn guiding shaft, and the yarn guiding mechanism 6 is set at the other end of the yarn guiding shaft. That is, the yarn guiding shaft is both the carrier of the yarn inlet channel and the power shaft of the yarn guiding mechanism 6. The power output end of the yarn guiding power mechanism 7 is provided with a driving gear 701 that meshes with the driven gear 702. The driving gear 701 transmits the motor power to the driven gear 702, and the driven gear 702 transmits the power to the yarn guiding shaft, driving the yarn guiding shaft to rotate.

[0039] like Figure 5 As shown, the yarn guiding mechanism 6 includes a drive yarn guiding wheel 602, which is fixedly connected to the yarn guiding shaft. The upper and lower ends of the drive yarn guiding wheel 602 are respectively equipped with a first yarn guiding wheel 601 and a second yarn guiding wheel 603. Both the first yarn guiding wheel 601 and the second yarn guiding wheel 603 mesh with the drive yarn guiding wheel 602. In this embodiment, the first yarn guiding wheel 601 and the second yarn guiding wheel 603 are of the same size, and the number of teeth on the first yarn guiding wheel 601 and the second yarn guiding wheel 603 is greater than that on the drive yarn guiding wheel 602, achieving speed reduction transmission. This ensures that the rotational speed of the yarn guiding roller 604 is lower than that of the drive yarn guiding wheel, preventing damage to the yarn due to high-speed friction. A yarn guiding roller 604 for guiding the yarn is fixedly connected to the first yarn guiding wheel 601 and the second yarn guiding wheel 603, respectively. In use, the active yarn guide wheel 602 is driven by the yarn guide shaft, which simultaneously drives the upper and lower yarn guide wheels to rotate synchronously. This causes the first yarn guide wheel 601 and the second yarn guide wheel 603 to rotate synchronously through gear meshing, thereby driving the yarn guide roller 604 to rotate synchronously. The yarn guide roller 604 combs the yarn 8 by pressing and rotating, which can remove impurities and initially tension the yarn 8.

[0040] In this embodiment, guide roller 1 601 and guide roller 2 603 are each provided with a support shaft in their middle portions. The support shaft is fixedly mounted on the upright plate 102 and provides rotational support for the guide rollers. Guide roller 1 601 and guide roller 2 603 are rotatably connected to the support shaft via bearings, which reduce frictional losses between the guide rollers and the support shaft. The other ends of the two support shafts are jointly fixed with a connecting plate 607. The connecting plate 607 connects the two support shafts, enhancing the overall structural strength, and also provides a carrier for the installation of reversing hook 1 605. Reversing hook 1 605 is fixedly connected to the connecting plate 607. Reversing hook 1 605 corresponds to the outlet of the yarn inlet channel. Reversing hook 1 605 guides the yarn 8 output from the yarn inlet channel to the space between the guide rollers, ensuring that the yarn 8 accurately enters the combing area.

[0041] like Figure 2 and Figure 3As shown, the tension control mechanism 5 includes a fixed plate 505. The fixed plate 505 has an elongated hole 5051, which facilitates fine-tuning of the installation position of the tension control mechanism 5. Multiple reinforcing ribs 5052 are welded to the bottom of the fixed plate 505. The reinforcing ribs 5052 abut against the side of the frame 1 and provide support. During installation, the fixed plate 505 is fixedly connected to the crossbeam 103 at the top of the frame 1 by bolts. The fixing plate 505 is provided with fixing frame one 5011, fixing frame two 5032 and fixing frame three 5041 in sequence along the direction of yarn 8. Fixing frame one 5011 is rotatably connected to a tension wheel one 501 that can swing. Tension wheel one 501 dynamically responds to the tension change of yarn 8 by swinging, and plays a first-level buffering role. The top of fixing frame one 5011 is provided with guide wheel two 502 through locking frame 5021. Locking frame 5021 is slidably set on fixing frame one 5011. Limit bolt is threaded on locking frame 5021. By tightening the limit bolt, locking frame 5021 can be limited. Guide roller 2 502 is higher than tension roller 1 501. Guide roller 2 502 is used to raise the height of yarn 8 and create a wrap angle for subsequent tension rollers. Guide roller 3 503 is provided on the fixed frame 2 5032 through bracket 5031. Guide roller 2 502 is higher than guide roller 3 503. Guide roller 3 503 guides yarn 8 to tension roller 2 504, forming an "S" shaped path to increase friction. Tension roller 2 504, which can be raised and lowered, is provided on the fixed frame 3 5041. Tension roller 2 504 is higher than guide roller 3 503. Tension roller 2 504 adjusts the tension twice through raising and lowering, playing a second-level buffering role, thus forming dual control.

[0042] Specifically, a swing rod 5012 is rotatably connected to the fixed frame 5011. A tension wheel 501 is rotatably positioned at the end of the swing rod 5012 away from the guide wheel 503. The swing rod 5012 serves as the swing carrier for the tension wheel 501, converting changes in yarn tension 8 into mechanical oscillation. A connecting rod 5013 is fixedly connected to the lower end of the fixed frame 5011. A first spring 5014 is provided between the other end of the swing rod 5012 and the connecting rod 5013. The first spring 5014 balances the yarn tension 8 through its elastic force and automatically extends and retracts to reset when tension fluctuates, balancing the yarn tension 8 through spring preload. A support rod 5015 for mounting a counterweight is fixedly connected to the other end of the swing rod 5012. The support rod 5015 is used to mount the counterweight to adjust the torque of the swing rod 5012 to adapt to different yarn tension requirements.

[0043] A sliding frame 5044 is slidably connected to the fixed frame 3 5041. Tension wheel 2 504 is rotatably mounted on the sliding frame 5044 via a bracket. The sliding frame 5044 drives the tension wheel 2 504 to rise and fall, converting tension changes into linear motion. A telescopic rod 5042 is provided between the bottom of the sliding frame 5044 and the fixed plate 505. The telescopic rod 5042 restricts the lateral displacement of the sliding frame, ensuring lifting stability. A second spring 5043 is sleeved on the telescopic rod 5042. The second spring 5043 provides elastic restoring force; when the tension of the yarn 8 increases, the spring is compressed to absorb fluctuations; when the tension decreases, it pushes the tension wheel upward to maintain tension, achieving dynamic balance. A guide wheel 104 is rotatably connected to the frame 1, and the yarn 8 exiting from tension wheel 2 504 enters guide wheel 104.

[0044] Working principle:

[0045] The twisted yarn 8 first enters the equipment through the inlet channel inside the yarn guide shaft, and is guided by the reversing hook 605 to the yarn guide rollers 604 of the yarn guide mechanism 6. At this time, the yarn guide power mechanism 7 is activated, and the driving gear 701 at its output end drives the driven gear 702 to rotate, which in turn drives the yarn guide shaft to rotate; the yarn guide shaft drives the driving yarn guide wheel 602 to rotate synchronously, and through gear meshing, drives the upper and lower symmetrical yarn guide wheels 601 and 603 to rotate synchronously, ultimately causing the yarn guide rollers 604 to rotate under pressure. Under the clamping and combing of the yarn guide rollers 604, short fibers, dust, needles and other impurities attached to the surface of the yarn 8 are removed, and at the same time, initial tension is achieved, and the tension tends to be uniform.

[0046] After being processed by the yarn guiding mechanism 6, the yarn 8 changes direction through the reversing hook 606 and enters the tension control mechanism 5 for deep tension balancing.

[0047] First-stage buffering adjustment: Yarn 8 first passes over tension wheel 501, which is suspended by swing rod 5012. Its stress state is balanced by the elastic force of the first spring 5014 and the counterweight on the support rod 5015. When the tension of yarn 8 increases, tension wheel 501 is pulled down, causing swing rod 5012 to compress the first spring 5014. The spring force reacts to the yarn to counteract excess tension. When the tension decreases, the first spring 5014 returns to its original position, pushing swing rod 5012 upwards, causing tension wheel 501 to rise and maintain yarn tension, thus achieving the first-stage buffering.

[0048] Second-stage dynamic adjustment: After being raised in height by guide roller 2 502 and guided in direction by guide roller 3 503, the yarn passes around tension roller 2 504 in an "S" shaped path. Tension roller 2 504 is connected to telescopic rod 5042 via sliding frame 5044, and the second spring 5043 on telescopic rod 5042 provides elastic support. When the yarn tension fluctuates, tension roller 2 504 rises and falls with sliding frame 5044: when the tension increases, tension roller 2 504 moves down to compress the second spring 5043, absorbing the tension peak; when the tension decreases, the second spring 5043 resets and pushes sliding frame 5044 up, and tension roller 2 504 moves up to maintain tension stability, achieving the second-stage buffering; through dual control, the tension of yarn 8 is ensured to be uniform before winding.

[0049] After tension control, the yarn 8 is guided to the winding mechanism 4 by the guide wheel 104, and then guided to the winding drum 3 by the winding guide wheel 408. The winding motor 401 starts, and drives the first transmission pulley to rotate through the second transmission pulley and the transmission belt, which in turn drives the large gear 402 to rotate. The large gear 402 drives the small gear 404 to rotate through the intermediate gear 403, causing the reciprocating screw 405 to rotate. The screw nut 406 performs axial reciprocating motion under the action of the reciprocating screw 405 and the guide shaft 407, driving the winding guide wheel 408 to move synchronously, so that the yarn is evenly arranged along the axial direction of the winding drum 3, avoiding local accumulation.

[0050] Meanwhile, the forming and winding motor 2 drives the large pulley 202 to rotate via the small pulley 201 and the transmission belt 203. The large pulley 202 then drives the winding drum 3 to rotate via the shaft. Due to the speed ratio design between the large pulley 202 and the small pulley 201, the rotational speed of the winding drum 3 matches the reciprocating speed of the winding guide wheel 408, ultimately winding the yarn neatly into a drum and completing the entire processing flow.

[0051] Finally, although this specification describes embodiments, not every embodiment contains only one independent technical solution. This way of describing the specification is only for clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A tension control device for cotton yarn twisting, comprising a frame (1), characterized in that: A forming and winding motor (2) is fixedly connected to the bottom of the frame (1). A winding drum (3) is rotatably connected to the frame (1). The forming and winding motor (2) drives the winding drum (3) to rotate. A yarn guiding power mechanism (7) and a yarn inlet channel are provided on one side of the frame (1). A yarn guiding mechanism (6) is provided at the end of the yarn inlet channel. The yarn guiding power mechanism (7) drives the yarn guiding mechanism (6) to rotate. A reversing hook (606) is provided on the frame (1) to cooperate with the yarn outlet end of the yarn guiding mechanism (6). A tension control mechanism (5) and a winding mechanism (4) are fixedly connected to the top of the frame (1). The winding mechanism (4) corresponds to the winding drum (3).

2. The tension control device for cotton yarn twisting according to claim 1, characterized in that: The power output end of the forming and winding motor (2) is fixedly connected to a small pulley (201), and a bearing seat (101) is fixedly connected to the frame (1). A rotating shaft is rotatably connected inside the bearing seat (101). A large pulley (202) is fixedly connected to one end of the rotating shaft. The small pulley (201) is connected to the large pulley (202) through a transmission belt (203). The other end of the rotating shaft is fixedly connected to the winding drum (3).

3. The tension control device for cotton yarn twisting according to claim 2, characterized in that: The winding mechanism (4) includes a reciprocating screw (405), a guide shaft (407), and a winding motor (401). The two ends of the reciprocating screw (405) are rotatably connected to a rotating seat, which is fixedly connected to the frame (1). The two ends of the guide shaft (407) are fixedly connected to the rotating seat. A screw nut (406) is slidably connected to both the reciprocating screw (405) and the guide shaft (407). One end of the reciprocating screw (405) passes through the rotating seat and is fixedly connected to a small gear (404). A large gear (402) is rotatably connected to the rotating shaft. The winding motor (401) drives the large gear (402) to rotate, and the large gear (402) meshes with the small gear (404).

4. The tension control device for cotton yarn twisting according to claim 3, characterized in that: A vertical plate (102) is fixedly connected to the frame (1). A rotating shaft passes through the vertical plate (102). A central rotating gear (403) is rotatably connected to the vertical plate (102). The large gear (402) drives the small gear (404) to rotate through the central rotating gear (403). A transmission pulley is fixedly connected to one side of the large gear (402). A transmission pulley is fixedly connected to the output end of the wound motor (401). The transmission pulley is connected to the first transmission pulley through a transmission belt.

5. The tension control device for cotton yarn twisting according to claim 1, characterized in that: The yarn guiding power mechanism (7) is fixedly connected to the frame (1). A support base is fixedly connected to the frame (1). A yarn guiding shaft is provided through the support base. An inlet channel is provided inside the yarn guiding shaft. A driven gear (702) is fixedly connected to one end of the yarn guiding shaft. A drive gear (701) that meshes with the driven gear (702) is provided at the power output end of the yarn guiding power mechanism (7). The yarn guiding mechanism (6) is located at the other end of the yarn guiding shaft.

6. The tension control device for cotton yarn twisting according to claim 5, characterized in that: The yarn guiding mechanism (6) includes an active yarn guiding wheel (602), which is fixedly connected to the yarn guiding shaft. The active yarn guiding wheel (602) has a first yarn guiding wheel (601) and a second yarn guiding wheel (603) at its upper and lower ends, respectively. Both the first yarn guiding wheel (601) and the second yarn guiding wheel (603) are engaged with the active yarn guiding wheel (602). The first yarn guiding wheel (601) and the second yarn guiding wheel (603) are respectively fixedly connected with yarn guiding rollers (604) for guiding yarn.

7. The tension control device for cotton yarn twisting according to claim 6, characterized in that: A vertical plate (102) is fixedly connected to the frame (1). A support shaft is provided in the middle of the first guide wheel (601) and the second guide wheel (603). The support shaft is fixedly set on the vertical plate (102). The first guide wheel (601) and the second guide wheel (603) are rotatably connected to the support shaft through bearings. A connecting plate (607) is fixedly fixed at the other end of the two support shafts. A reversing hook (605) is fixedly connected on the connecting plate (607). The reversing hook (605) corresponds to the outlet of the inlet channel.

8. A tension control device for cotton yarn twisting according to any one of claims 1 to 7, characterized in that: The tension control mechanism (5) includes a fixed plate (505), which is fixedly connected to the frame (1). The fixed plate (505) is provided with a fixed frame one (5011), a fixed frame two (5032) and a fixed frame three (5041) in sequence along the yarn travel direction. A tension wheel one (501) that can swing is rotatably connected to the fixed frame one (5011). A guide wheel two (502) is provided on the top of the fixed frame one (5011). The guide wheel two (502) is higher than the tension wheel one (501). A guide wheel three (503) is provided on the fixed frame two (503). The guide wheel two (502) is higher than the guide wheel three (503). A tension wheel two (504) that can be raised and lowered is provided on the fixed frame three (504). The tension wheel two (504) is higher than the guide wheel three (503).

9. The tension control device for cotton yarn twisting according to claim 8, characterized in that: A swing rod (5012) is rotatably connected to the first fixed frame (5011). A tension wheel (501) is rotatably set at the end of the swing rod (5012) away from the third guide wheel (503). A connecting rod (5013) is fixedly connected to the lower end of the first fixed frame (5011). A first spring (5014) is provided between the other end of the swing rod (5012) and the connecting rod (5013). A support rod (5015) for installing counterweights is fixedly connected to the other end of the swing rod (5012).

10. The tension control device for cotton yarn twisting according to claim 8, characterized in that: A sliding frame (5044) is slidably connected to the fixed frame three (5041). Tension wheel two (504) is rotatably mounted on the sliding frame (5044). A telescopic rod (5042) is provided between the bottom of the sliding frame (5044) and the fixed plate (505). A second spring (5043) is sleeved on the telescopic rod (5042).

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