A hollow spindle twist mechanism and process for producing cored core-spun yarn

Abstract

The application relates to the technical field of hollow spindle flower twisting machines, and discloses a hollow spindle flower twisting mechanism and process for producing core-filled plying yarn, which comprises a machine body, a plurality of unwinding drums are rotationally connected to the machine body, a plurality of winding rods are rotationally connected to the machine body, the same number of outer covers as the number of the unwinding drums are fixedly connected to the machine body, the outer covers are located between the unwinding drums and the winding rods, a hollow spindle body is rotationally connected in the outer cover through a bearing, a false twister is fixedly connected to the bottom of the hollow spindle body, a fixing ring is fixedly connected to the false twister, a mounting box is fixedly connected to one side of the fixing ring, one screw rod A and two screw rods B are rotationally connected between the bottom of the mounting box and the top of the false twister respectively, the two screw rods B are located on the two sides of the screw rod A, and damping sheets with arc structures are arranged above the false twister. The hollow spindle flower twisting mechanism for producing core-filled plying yarn effectively solves the problem that the false twister wears out and causes inconsistent false twisting effects of the same equipment at different periods.

Description

Technical Field

[0001] This invention relates to the field of hollow spindle twisting machine technology, specifically to a hollow spindle twisting mechanism and process for producing core-filled braided yarn. Background Technology

[0002] Core-filled braided yarn, also known as braided yarn or small braided yarn, is an important variety of fancy yarn. It consists of three parts: core yarn, decorative yarn, and fixing yarn. The core yarn acts as a skeleton to provide strength, while the decorative yarn is fed in by overfeeding and springs back and twists in a relaxed state to form a braided pattern. The fixing yarn is responsible for binding and fixing the pattern to ensure structural stability. Due to the complexity of the yarn pattern, traditional ring spinning fancy twisting machines require two processes to complete the production, which is lengthy and inefficient. However, hollow spinning fancy twisting machines can realize the simultaneous twisting of core yarn, decorative yarn, and fixing yarn on the same machine and form the yarn in one go, which significantly shortens the process, improves production efficiency, and ensures the consistency and stability of the pattern. Therefore, it has become the ideal equipment for producing core-filled braided yarn. The hollow spindle twisting mechanism is the core actuator of the hollow spindle fancy twisting machine. It mainly consists of a feeding roller, a hollow spindle, and an output winding device. Its basic principle is as follows: the core yarn and the decorative yarn pass through the inside of the hollow spindle bar, and the fixed yarn bobbin is fitted on the outside of the hollow spindle and rotates with the spindle. The three sets of yarns converge at the spindle inlet and pass through the hollow spindle tube together. During this process, the feeding speed of the decorative yarn changes periodically according to the pattern requirements. Combined with the false twisting effect generated by the high-speed rotation of the spindle, the decorative yarn is twisted into a braided pattern on the surface of the core yarn. At the same time, the fixed yarn unwinds from the rotating bobbin and wraps around the core yarn and decorative yarn in the opposite direction after the yarn is output, permanently fixing the braided pattern. Finally, it is led out by the output roller and wound into a cone yarn. For core-filled braided yarn, the degree of false twist directly affects the braid density and hand feel. Excessive false twist results in overly dense braids with a stiff hand feel, while insufficient false twist leads to loose braids and unclear patterns. Different yarn materials and thicknesses have different requirements for the degree of false twist. However, in the long-term operation of existing equipment, the surface of the false twister will wear down, and the coefficient of friction will gradually change, causing inconsistent false twisting effects from the same machine at different times, affecting the stability of product quality. Therefore, we propose a hollow spindle twisting mechanism and process for producing core-filled braided yarn. Summary of the Invention

[0003] The purpose of this invention is to provide a hollow spindle twisting mechanism and process for producing core-filled braided yarn, so as to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a hollow spindle twisting mechanism for producing core-filled braided yarn, comprising a machine body, a plurality of unwinding drums rotatably connected to the machine body, a plurality of take-up rods rotatably connected to the machine body, the take-up rods being located below the unwinding drums, an outer cover being fixedly connected to the machine body in the same number as the unwinding drums, the outer cover being located between the unwinding drums and the take-up rods, a hollow spindle body being rotatably connected inside the outer cover via bearings, and a false twister being fixedly connected to the bottom of the hollow spindle body; A fixing ring is fixedly connected to the false twister, and a mounting box is fixedly connected to one side of the fixing ring. A screw A and two screws B are rotatably connected between the bottom of the mounting box and the top of the false twister, respectively. The two screws B are located on both sides of the screw A. An arc-shaped damping plate is provided above the false twister.

[0005] Preferably, three threaded sleeves are fixedly connected to the side of the damping plate near the fixed ring, and the three threaded sleeves are respectively threadedly connected to screw A and screw B, while a limit sleeve is fixedly connected to the side of the damping plate away from the fixed ring.

[0006] Preferably, the mounting box is rotatably connected with three gears, each gear being fixedly connected to the top of the corresponding screw A and screw B, and toothed belts are fitted between the gears to mesh with each other.

[0007] Preferably, a fixed base is fixedly connected to the top of the false twister on the side away from the mounting box. A limiting plate is fixedly connected to the inner wall of the fixed base. A limiting rod is slidably connected inside the fixed base. The limiting rod passes through a limiting sleeve. The limiting rod is slidably connected to the inner wall of the limiting sleeve. A positioning groove is opened on one side of the limiting rod. A magnet is fixedly connected to the inner wall of one side of the positioning groove. A communicating groove communicating with the positioning groove is opened on the bottom side of the limiting rod. A knob B is fixedly connected to the top of the limiting rod.

[0008] Preferably, a knob A is fixedly connected to the top of the mounting box, the bottom of the knob A is fixedly connected to the top of one of the gears, and the bottom of the knob A has several limiting grooves that are evenly distributed in a ring.

[0009] Preferably, the top of the mounting box is fixedly connected to two mounting sleeves, which are symmetrically distributed and located below the knob A. A limiting pin is slidably connected inside the mounting sleeve, and a spring is fixedly connected between the bottom of the limiting pin and the bottom wall of the mounting sleeve on the same side. One of the limiting pins is engaged with a limiting groove at a corresponding position, and the other limiting pin is in contact with the bottom surface of the knob A.

[0010] Preferably, a scale plate is fixedly connected to one side of the top of the false twister, and a pointer is fixedly connected to the side of the damping plate near the scale plate, with the pointer slidably connected to the scale plate.

[0011] Preferably, a transmission wheel is fixedly connected to the hollow ingot body, and a transmission belt is sleeved between each transmission wheel in an S-shape. Each transmission wheel is connected to a motor inside the machine body through the transmission belt.

[0012] Preferably, a plurality of yarn guide wheels are rotatably connected to the machine body, the yarn guide wheels being located between the unwinding drum and the hollow spindle body, and a plurality of tension adjusters are fixedly connected to the machine body, the tension adjusters being located between the yarn guide wheels and the hollow spindle body.

[0013] A hollow spindle twisting process for producing core-filled braided yarn specifically includes the following steps: S1: First, install the yarn roll on the unwinding drum, lead the yarn end out from the unwinding drum, pass it around the guide wheel and tension regulator in sequence, and then guide it through the hollow spindle body to the false twister position to complete the initial yarn threading; S2: Then the operator first rotates knob B in the opposite direction to disengage the magnet on the inner wall of the positioning groove from the limiting plate on the inner wall of the fixed seat. Then, the operator pulls knob B upward to pull the limiting rod out of the fixed seat. At the same time, the limiting rod also exits from the limiting sleeve, completing the disassembly of the limiting rod. At this time, a gap is formed between the damping plate and the side of the false twister away from screw A and screw B. The operator then wraps the yarn around the outer surface of the false twister from the gap between the damping plate and the false twister. S3: After the yarn is wound, the operator inserts the limiting rod through the limiting sleeve on one side of the damping plate, then aligns the connecting groove on the bottom side of the limiting rod with the limiting plate on the inner wall of the fixed seat. Then, the operator presses down the knob B to drive the limiting rod downward into the fixed seat, so that the limiting plate enters the positioning groove on one side of the limiting rod through the connecting groove. At this time, the operator rotates the knob B to drive the limiting rod to rotate a certain angle, so that the magnet in the positioning groove adheres to and attracts the limiting plate, locking the limiting rod in the fixed seat, thus completing the installation of the limiting rod. S4: The operator then rotates knob A on the top of the mounting box. Knob A rotates the corresponding gear fixedly connected to it inside the mounting box. This gear drives the other two gears to rotate synchronously in the same direction via a toothed belt fitted between each gear. The toothed belt ensures that each gear maintains a precise and identical rotational speed, thus ensuring that screw A and screw B always rotate synchronously. The three gears respectively drive the screw A and the two screws B fixedly connected below to rotate together. Since the pitch of screw B is greater than the pitch of screw A, at the same rotation angle, the two sides threadedly connected to the two screws B will rotate together. The axial displacement of the threaded sleeve is greater than that of the intermediate threaded sleeve connected to the screw A. The three threaded sleeves pull the three corresponding connection points on the damping plate of the elastic arc structure at different heights, so that the damping plate is forced to bend and deform while rising or falling as a whole. Its arc curvature changes accordingly until its inner arc surface is tightly attached to the yarn passing through the outer surface of the false twister. At the same time, the pointer fixedly connected to the side of the damping plate near the scale plate slides along the scale plate with the damping plate. The operator can accurately grasp the current position and adjustment amount of the damping plate through the scale plate. S5: When knob A is rotated to the desired position, the limiting pins set in the two mounting sleeves will always be pushed upward under the elastic force of the springs at their respective bottoms. The two limiting pins are staggered in the circumferential direction. During the rotation of knob A, at least one limiting pin will always be embedded in the limiting groove at the bottom of knob A, locking knob A in place and thus accurately locking the height position of the damping plate. S6: Start the motor inside the machine. The motor drives each transmission wheel in an S-shaped winding manner through the transmission belt, so that all hollow spindle bodies rotate synchronously at high speed, driving the false twister at the bottom of the spindle to rotate together. As the yarn passes through the hollow spindle body, due to the control of the drafting mechanism at both ends, the rotation of the false twister will produce temporary twist on the yarn segment, thereby increasing the cohesion and strength of the yarn segment. When the yarn leaves the false twister, the previous false twist automatically unwinds and disappears. At this time, the subsequent fixing yarn wraps around the core yarn and decorative yarn in a real twist manner, fixing the pattern and finally forming the unique structure of the core braided yarn. S7: The finished fancy yarn is wound into a cylinder by a take-up rod located below the unwinding drum. The outer cover provides safety protection for the high-speed rotating hollow spindle body. The entire process is completed continuously and synchronously.

[0014] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention, through the setting of a damping plate, when the surface of the false twister wears down due to long-term use and the coefficient of friction changes, the operator rotates knob A to drive the damping plate to rise and fall, changing the contact pressure between the inner arc surface of the damping plate and the yarn on the outer surface of the false twister, thereby compensating and adjusting the friction force on the yarn, so that the degree of false twist of the yarn on the false twister is always kept within the required range. This effectively solves the problem of inconsistent false twisting effect of the same equipment at different times due to the wear of the false twister, and significantly improves the pattern consistency and quality stability of the core-filled braided yarn products. 2. This invention, through the setting of screws A and B, utilizes the structural design that the pitch of screw B is greater than that of screw A, so that the displacement of the threaded sleeves on both sides of the damping plate is greater than that of the middle threaded sleeve during the lifting and lowering process. This forces the elastic damping plate to bend and deform while the whole is lifting and lowering, and the curvature of the arc changes accordingly. This ensures that the inner arc surface of the damping plate is always tightly attached to the outer surface of the false twister, effectively avoiding the problem of gaps or failure to attach between the arc surface of the damping plate and the surface of the false twister due to the lifting and lowering process, and significantly improving the attachment effect between the damping plate and the outer surface of the false twister. 3. This invention features a limiting rod that rotates after connecting to a limiting plate via a connecting groove, causing the magnetic piece to adhere and lock to the limiting plate. This allows for quick assembly and disassembly of the limiting rod within the fixed base. After disassembly, a notch is formed on the side of the damping plate and the false twister away from the screw, providing operating space for yarn winding and solving the problem of inconvenient yarn threading on the false twister. After installation, the limiting rod passes through the limiting sleeve and guides and limits the raising and lowering of the damping plate, effectively preventing the damping plate from shifting or wobbling during raising and lowering, significantly improving the convenience of yarn threading and the smoothness of the damping plate's raising and lowering movement. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the outer casing structure of the present invention; Figure 3 This is a schematic diagram of the hollow ingot structure of the present invention; Figure 4 This is a schematic diagram of the false twist device structure of the present invention; Figure 5 This is a schematic diagram of the knob structure of the present invention; Figure 6 This is a schematic cross-sectional view of the mounting box of the present invention; Figure 7 This is a schematic diagram of the cross-sectional structure of the mounting sleeve of the present invention; Figure 8 This is a schematic diagram of the damping plate structure of the present invention; Figure 9 This is a schematic diagram of the limiting rod structure of the present invention; Figure 10 This is a schematic diagram of the fixing base structure of the present invention; Figure 11 For the present invention Figure 5 A magnified structural diagram of area A is shown below; Figure 12 For the present invention Figure 9 The diagram shows an enlarged view of region B.

[0016] In the diagram: 1. Machine body; 2. Unwinding drum; 21. Guide roller; 22. Tension regulator; 23. Take-up bar; 3. Outer cover; 31. Hollow spindle body; 32. False twister; 33. Scale plate; 4. Drive wheel; 41. Drive belt; 5. Fixing ring; 51. Mounting box; 52. Screw A; 53. Screw B; 54. Gear; 55. Toothed belt; 6. Knob A; 61. Limiting groove; 7. Mounting sleeve; 71. Limiting pin; 72. Spring; 8. Damping plate; 81. Threaded sleeve; 82. Limiting sleeve; 83. Pointer; 9. Fixing base; 91. Limiting plate; 92. Limiting rod; 93. Positioning groove; 94. Magnet; 95. Connecting groove; 96. Knob B. Detailed Implementation

[0017] 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.

[0018] Please see Figure 1-12 This invention provides a technical solution: a hollow spindle twisting mechanism for producing core-filled braided yarn, comprising a machine body 1, a plurality of unwinding drums 2 rotatably connected to the machine body 1, a plurality of take-up rods 23 rotatably connected to the machine body 1, the take-up rods 23 being located below the unwinding drums 2, an outer cover 3 of the same number as the unwinding drums 2 being fixedly connected to the machine body 1, the outer cover 3 being located between the unwinding drums 2 and the take-up rods 23, and a hollow spindle body 31 being rotatably connected inside the outer cover 3 via bearings, the bottom of the hollow spindle body 31 being fixedly connected. A false twister 32 is fixedly connected to the machine body 1. Several guide rollers 21 are rotatably connected to the machine body 1. The guide rollers 21 are located between the unwinding drum 2 and the hollow spindle body 31. Several tension adjusters 22 are fixedly connected to the machine body 1. The tension adjusters 22 are located between the guide rollers 21 and the hollow spindle body 31. A drive wheel 4 is fixedly connected to the hollow spindle body 31. A drive belt 41 is sleeved between each drive wheel 4 in an S-shape. Each drive wheel 4 is connected to the motor inside the machine body 1 through the drive belt 41.

[0019] Furthermore, during the twisting process of the core-filled braided yarn, the yarn is drawn out from the unwinding drum 2, passes sequentially through the guide roller 21 and the tension regulator 22, and smoothly enters the hollow spindle body 31 under the guidance of the guide roller 21 and the control of the yarn tension by the tension regulator 22. At the same time, the motor inside the machine body 1 drives each transmission wheel 4 in an S-shaped winding manner through the transmission belt 41, so that all the hollow spindle bodies 31 rotate synchronously at high speed, driving the false twister 32 at its bottom to rotate together. During the process of the yarn passing through the hollow spindle, due to the stretching mechanism at both ends, Under the control of the false twister, the rotation of the false twister will generate temporary twist on the yarn segment, thereby increasing the cohesion and strength of the yarn segment. When the yarn leaves the false twister, the previous false twist will automatically unwind and disappear. At this time, the subsequent fixing yarn will wrap around the core yarn and decorative yarn in a true twist manner to fix the pattern and finally form the unique structure of the core braided yarn. The finished fancy yarn is wound into a cylinder by the take-up rod 23 located below the unwinding drum. The outer cover 3 plays a safety protection role for the high-speed rotating hollow spindle body. The entire process is completed continuously and synchronously.

[0020] Combined with appendix Figure 4 , Figure 6 and Figure 8 As shown, a fixing ring 5 is fixedly connected to the false twister 32. A mounting box 51 is fixedly connected to one side of the fixing ring 5. A screw A52 and two screws B53 are rotatably connected between the bottom of the mounting box 51 and the top of the false twister 32, respectively. The two screws B53 are located on both sides of the screw A52, and the pitch of the screws B53 is greater than the pitch of the screws A52. An arc-shaped damping plate 8 is provided above the false twister 32. Three threaded sleeves 81 are fixedly connected to the side of the damping plate 8 near the fixing ring 5. The three threaded sleeves 81 are threadedly connected to the screws A52 and B53, respectively. A limiting sleeve 82 is fixedly connected to the side away from the fixing ring 5. Three gears 54 are rotatably connected inside the mounting box 51. Each gear 54 is fixedly connected to the top of the corresponding screw A52 and screw B53. A toothed belt 55 is sleeved between the gears 54 and they mesh with each other. A knob A6 is fixedly connected to the top of the mounting box 51. The bottom of the knob A6 is fixedly connected to the top of one of the gears 54. A scale plate 33 is fixedly connected to one side of the top of the false twister 32. A pointer 83 is fixedly connected to the side of the damping plate 8 near the scale plate 33. The pointer 83 is slidably connected to the scale plate 33.

[0021] Furthermore, when it is necessary to adjust the friction of the yarn at the false twister, the operator turns knob A6. Knob A6 drives the corresponding gear 54 fixedly connected to it in the mounting box 51 to rotate. This gear 54 drives the other two gears 54 to rotate synchronously and in the same direction through the toothed belt 55 sleeved between each gear 54. Compared with ordinary belts, the toothed belt 55 can ensure that each gear 54 always maintains a precise and the same speed, and will not cause speed differences between the gears 54 due to belt wear or slippage during long-term use. This ensures that screw A52 and screw B53 always rotate synchronously. The three gears 54 respectively drive the screw A52 and the two screws B53 fixedly connected below to rotate together. Since the pitch of screw B53 is greater than the pitch of screw A52, at the same rotation angle, with The axial displacement of the threaded sleeves 81 on both sides of the two screws B53 is greater than the displacement of the middle threaded sleeve 81 connected to the screw A52. The three threaded sleeves 81 pull the three corresponding connection points on the damping plate 8 of the elastic arc structure at different heights, so that the damping plate 8 is forced to bend and deform while rising or falling as a whole, and its arc curvature changes accordingly. This allows its inner arc surface to always adapt to and closely fit the yarn passing through the outer surface of the false twister 32, thereby adjusting the magnitude of the damping force on the yarn. The pointer 83 fixedly connected to the side of the damping plate 8 near the scale plate 33 slides along the scale plate 33 with the damping plate 8, which makes it easy for the operator to accurately grasp the current position and adjustment amount of the damping plate 8 through the scale plate 33, and complete the fine control of the yarn friction force.

[0022] Combined with appendix Figure 5 , Figure 7 and Figure 11 As shown, the bottom of the knob A6 has several ring-shaped and evenly distributed limiting grooves 61. The top of the mounting box 51 is fixedly connected to two mounting sleeves 7. The two mounting sleeves 7 are symmetrically distributed and are both located below the knob A6. Limiting pins 71 are slidably connected inside the mounting sleeves 7. A spring 72 is fixedly connected between the bottom of the limiting pin 71 and the bottom wall of the mounting sleeve 7 on the same side. One of the limiting pins 71 is engaged with the limiting groove 61 at the corresponding position, and the other limiting pin 71 is in contact with the bottom surface of the knob A6.

[0023] Furthermore, when the operator rotates knob A6 to adjust to the desired position, the limiting pins 71 set in the two symmetrically distributed mounting sleeves 7 on the top of the mounting box 51 always maintain an upward pushing tendency under the elastic force of their respective bottom springs 72. The two limiting pins 71 are staggered in the circumferential direction. When knob A6 is rotated to a certain angle, one of the limiting pins 71 is exactly aligned with a limiting groove 61 on the bottom of knob A6. This limiting pin 71 is pushed into the limiting groove 61 by spring 72, locking knob A6 in place. At this time, the other limiting pin 71 is exactly located below the protrusion between the two limiting grooves 61, contacting the bottom surface of knob A6 at that position and being pressed downward into the mounting sleeve 7. When further adjustment is needed, the operator slightly rotates knob A6, and the original embedded... The limiting pin 71 in the limiting groove 61 is pressed down by the protruding part on the bottom surface of the knob A6 and exits the limiting groove 61. At the same time, the other limiting pin 71 that was originally pressed down is aligned with the next limiting groove 61 as the knob A6 rotates, and immediately pops out and embeds into the limiting groove 61 under the action of the spring 72. Through the staggered distribution design of the two limiting pins 71 in the circumferential direction, the knob A6 is guaranteed to always have at least one limiting pin 71 in the locked state embedded in the limiting groove 61 at any angle during rotation. This effectively avoids the situation where a single limiting pin 71 is located in the "blind zone" between the two limiting grooves 61 and cannot be immediately embedded, significantly reducing the probability of limiting failure. This achieves precise and continuous limiting of the rotation angle of the knob A6, and thus accurately locks and controls the height position of the damping plate 8.

[0024] Combined with appendix Figure 4 , Figure 9 , Figure 10 and Figure 12 As shown, a fixed base 9 is fixedly connected to the top of the false twister 32 on the side away from the mounting box 51. A limiting plate 91 is fixedly connected to the inner wall of the fixed base 9. A limiting rod 92 is slidably connected inside the fixed base 9. The limiting rod 92 passes through the limiting sleeve 82. The limiting rod 92 is slidably connected to the inner wall of the limiting sleeve 82. A positioning groove 93 is opened on one side of the limiting rod 92. A magnet 94 is fixedly connected to the inner wall of one side of the positioning groove 93. A connecting groove 95 communicating with the positioning groove 93 is opened on the bottom side of the limiting rod 92. A knob B96 is fixedly connected to the top of the limiting rod 92.

[0025] Furthermore, when it is necessary to perform twisting on the core-filled braided yarn, the yarn needs to be wound around the false twister 32 first. At this time, the operator first rotates the knob B96 in the opposite direction to disengage the magnet 94 on one side of the positioning groove 93 from the limiting plate 91 on the inner wall of the fixed seat 9. Then, the operator pulls the knob B96 upward to pull the limiting rod 92 out of the fixed seat 9. At the same time, the limiting rod 92 also exits from the limiting sleeve 82, completing the disassembly of the limiting rod 92. At this time, a gap is formed between the damping plate 8 and the side of the false twister 32 away from the screw A52 and screw B53, that is, there is no obstruction on this side. The operator can then smoothly wind the yarn around the outer surface of the false twister 32 through this gap. After the yarn is wound, the limiting rod 92 needs to be reinstalled. The operator inserts the limiting rod 92 through... The limiting sleeve 82 on one side of the damping plate 8 is then aligned with the connecting groove 95 on one side of the bottom of the limiting rod 92, and the limiting plate 91 on the inner wall of the fixed base 9 is then inserted into the fixed base 9 by pressing down the knob B96. This allows the limiting plate 91 to enter the positioning groove 93 on one side of the limiting rod 92 through the connecting groove 95. At this time, the knob B96 is rotated to rotate the limiting rod 92 by a certain angle, so that the magnet 94 in the positioning groove 93 adheres to and attracts the limiting plate 91, thereby locking the limiting rod 92 in the fixed base 9. After installation, the limiting rod 92 passes through the limiting sleeve 82 and plays a guiding and limiting role in the raising and lowering of the damping plate 8, making the damping plate 8 more stable and smooth during the raising and lowering process driven by the screw A52 and the screw B53, and preventing the damping plate 8 from shifting or shaking.

[0026] A hollow spindle twisting process for producing core-filled braided yarn specifically includes the following steps: S1: First, install the yarn roll on the unwinding drum 2, lead the yarn end out from the unwinding drum 2, pass it around the guide wheel 21 and the tension regulator 22 in sequence, and then guide it through the hollow spindle body 31 to the position of the false twister 32 to complete the initial threading of the yarn. S2: Then, the operator first rotates the knob B96 in the opposite direction to disengage the magnet 94 on one side of the inner wall of the positioning groove 93 from the limiting plate 91 on the inner wall of the fixed seat 9. Then, the operator pulls the knob B96 upward to pull the limiting rod 92 out of the fixed seat 9. At the same time, the limiting rod 92 also exits from the limiting sleeve 82, completing the disassembly of the limiting rod 92. At this time, a gap is formed between the damping plate 8 and the side of the false twister 32 away from the screw A52 and the screw B53. At this time, the operator winds the yarn from the gap between the damping plate 8 and the false twister 32 onto the outer surface of the false twister 32. S3: After the yarn is wound, the operator inserts the limiting rod 92 through the limiting sleeve 82 on one side of the damping plate 8, and then aligns the connecting groove 95 on one side of the bottom of the limiting rod 92 with the limiting plate 91 on the inner wall of the fixed seat 9. Then, the operator presses down the knob B96 to drive the limiting rod 92 downward into the fixed seat 9, so that the limiting plate 91 enters the positioning groove 93 on one side of the limiting rod 92 through the connecting groove 95. At this time, the operator rotates the knob B96 to drive the limiting rod 92 to rotate a certain angle, so that the magnet 94 in the positioning groove 93 adheres to and attracts the limiting plate 91, locking the limiting rod 92 in the fixed seat 9, thus completing the installation of the limiting rod 92. S4: The operator then rotates knob A6 on the top of mounting box 51. Knob A6 rotates the corresponding gear 54 fixedly connected to it inside mounting box 51. This gear 54 drives the other two gears 54 to rotate synchronously and in the same direction through a toothed belt 55 sleeved between each gear 54. The toothed belt 55 ensures that each gear 54 always maintains a precise and identical rotation speed, thereby ensuring that screw A52 and screw B53 always rotate synchronously. The three gears 54 respectively drive the screw A52 and the two screws B53 fixedly connected below them to rotate together. Since the pitch of screw B53 is greater than the pitch of screw A52, at the same rotation angle, it rotates together with the two screws B53. The axial displacement of the threaded sleeves 81 on both sides of the threaded connection is greater than the displacement of the middle threaded sleeve 81 that is threaded to the screw A52. The three threaded sleeves 81 pull the three corresponding connection points on the damping plate 8 of the elastic arc structure at different heights, so that the damping plate 8 is forced to bend and deform while rising or falling as a whole, and its arc curvature changes accordingly until its inner arc surface is tightly attached to the yarn passed by the outer surface of the false twister 32. At the same time, the pointer 83 fixedly connected to the side of the damping plate 8 near the scale plate 33 slides along the scale plate 33 with the damping plate 8. The operator can accurately grasp the current position and adjustment amount of the damping plate 8 through the scale plate 33. S5: When the knob A6 is rotated to the desired position, the limiting pins 71 set in the two mounting sleeves 7 are always pushed upward under the elastic force of the bottom springs 72. The two limiting pins 71 are staggered in the circumferential direction. During the rotation of the knob A6, at least one limiting pin 71 is always embedded in the limiting groove 61 at the bottom of the knob A6, locking the knob A6 and thus accurately locking the height position of the damping plate 8. S6: Start the motor inside the machine body 1. The motor drives each transmission wheel 4 in an S-shaped winding manner through the transmission belt 41, so that all hollow spindle bodies 31 rotate synchronously at high speed, driving the false twister 32 at its bottom to rotate together. During the process of the yarn passing through the hollow spindle body 31, due to the control of the drafting mechanism at both ends, the rotation of the false twister 32 will generate temporary twist on the yarn segment, thereby increasing the cohesion and strength of the yarn segment. When the yarn leaves the false twister 32, the previous false twist automatically unwinds and disappears. At this time, the subsequent fixing yarn wraps around the core yarn and decorative yarn in a real twist manner, fixing the pattern and finally forming the unique structure of the core braided yarn. S7: The finished fancy yarn is wound into a cylinder by the take-up rod 23 located below the unwinding drum 2. The outer cover 3 provides safety protection for the high-speed rotating hollow spindle body 31. The entire process is completed continuously and synchronously.

[0027] Working principle: After the yarn is drawn out from the self-unwinding drum 2, it passes through the guide roller 21 and the tension regulator 22 in sequence. Under the guidance of the guide roller 21 and the control of the tension regulator 22, it smoothly enters the hollow spindle body 31 with the set tension. Then the operator rotates knob B96 in the opposite direction to disengage the magnet 94 in the positioning groove 93 from the limiting plate 91 in the fixed seat 9. Pulling knob B96 upwards will pull the limiting rod 92 out of the fixed seat 9 and the limiting sleeve 82. At this time, the damping plate 8 and the side of the false twister 32 away from the screw A52 and the screw B53 form a notch, and the yarn is wound around the outer surface of the false twister 32 through the notch. After the yarn is wound, reinsert the limiting rod 92 into the limiting sleeve 82, align the connecting groove 95 with the limiting plate 91, and press it down into the fixing seat 9. The limiting plate 91 enters the positioning groove 93 through the connecting groove 95. Rotate the knob B96 to make the magnet 94 attract and lock with the limiting plate 91, thus completing the installation of the limiting rod 92. Next, the operator rotates knob A6, causing gear 54, which is fixed to knob A6, to rotate. This rotation, via toothed belt 55, drives two other gears 54 to rotate synchronously and in the same direction. The toothed belt 55 ensures that all gears maintain the same speed, preventing slippage that could cause a speed difference between screw A52 and screw B53. The three gears 54 respectively drive screw A52 and the two screws B53 to rotate. Because the pitch of screw B53 is greater than that of screw A52, at the same rotation angle, the threaded sleeves 81 on both sides... The axial displacement is greater than that of the intermediate threaded sleeve 81. The three threaded sleeves 81 pull the three connection points on the elastic arc-shaped damping plate 8 at different heights, forcing the damping plate 8 to bend and deform while rising and falling. The arc curvature changes accordingly, so that its inner arc surface is tightly attached to the yarn passing through the outer surface of the false twister 32, thereby adjusting the damping force on the yarn. The pointer 83 on one side of the damping plate 8 slides along the scale plate 33 with the damping plate 8. The operator can read the current position through the scale plate 33 and accurately control the adjustment amount. When the damping plate 8 is adjusted to the desired position, the limiting pins 71 in the two mounting sleeves 7 always maintain an upward pushing tendency under the action of the spring 72. The two limiting pins 71 are staggered in the circumferential direction, so that when the knob A6 is rotated to any angle, one limiting pin 71 will always be inserted into a limiting groove 61 at the bottom of the knob A6 to lock the knob A6 in place, while the other limiting pin 71 is pressed down by the protruding part on the bottom surface of the knob A6. When the knob A6 is rotated further, the two limiting pins 71 alternately insert into and exit the limiting groove 61, so as to achieve continuous limiting of the knob A6 and precise locking of the height of the damping plate 8. Then, the motor inside the machine body 1 is started. The motor drives each transmission wheel 4 through the S-shaped transmission belt 41, which drives all the hollow spindle bodies 31 and the false twisters 32 fixed at their bottom to rotate synchronously at high speed. When the yarn passes through the hollow spindle body 31, the rotation of the false twisters 32 causes temporary twisting on the yarn segment, and the cohesion and strength of the yarn are increased accordingly. After the yarn leaves the false twisters 32, the previous false twisting is automatically unwound. At this time, the subsequent fixed yarn is wrapped around the core yarn and decorative yarn surface in a real twisting manner to fix the pattern and form the unique structure of the core braided yarn. The formed core braided yarn is wound into a cylinder by the take-up rod 23 located below the unwinding drum 2.

[0028] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0029] 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 claims and their equivalents.

Claims

1. A hollow spindle twisting mechanism for producing core-filled braided yarn, comprising a machine body (1), wherein a plurality of unwinding drums (2) are rotatably connected to the machine body (1), and a plurality of take-up rods (23) are rotatably connected to the machine body (1), wherein the take-up rods (23) are located below the unwinding drums (2), characterized in that: The machine body (1) is fixedly connected with an outer cover (3) of the same number as the unwinding drum (2). The outer cover (3) is located between the unwinding drum (2) and the winding rod (23). A hollow spindle body (31) is rotatably connected inside the outer cover (3) via a bearing. A false twister (32) is fixedly connected to the bottom of the hollow spindle body (31). A fixing ring (5) is fixedly connected to the false twister (32), and a mounting box (51) is fixedly connected to one side of the fixing ring (5). A screw A (52) and two screws B (53) are rotatably connected between the bottom of the mounting box (51) and the top of the false twister (32). The two screws B (53) are located on both sides of the screw A (52). An arc-shaped damping plate (8) is provided above the false twister (32).

2. The hollow spindle twisting mechanism for producing core-filled braided yarn according to claim 1, characterized in that: The damping plate (8) is fixedly connected to three threaded sleeves (81) on the side near the fixed ring (5). The three threaded sleeves (81) are respectively threadedly connected to screw A (52) and screw B (53). The damping plate (8) is fixedly connected to a limiting sleeve (82) on the side away from the fixed ring (5).

3. The hollow spindle twisting mechanism for producing core-filled braided yarn according to claim 2, characterized in that: The mounting box (51) is rotatably connected to three gears (54). Each gear (54) is fixedly connected to the top of the corresponding screw A (52) and screw B (53). The gears (54) are fitted with toothed belts (55) that mesh with each other.

4. The hollow spindle twisting mechanism for producing core-filled braided yarn according to claim 3, characterized in that: The top of the false twister (32) away from the mounting box (51) is fixedly connected to a fixed base (9). A limiting plate (91) is fixedly connected to the inner wall of the fixed base (9). A limiting rod (92) is slidably connected inside the fixed base (9). The limiting rod (92) passes through the limiting sleeve (82). The limiting rod (92) is slidably connected to the inner wall of the limiting sleeve (82). A positioning groove (93) is opened on one side of the limiting rod (92). A magnet piece (94) is fixedly connected to the inner wall of one side of the positioning groove (93). A connecting groove (95) communicating with the positioning groove (93) is opened on the bottom side of the limiting rod (92). A knob B (96) is fixedly connected to the top of the limiting rod (92).

5. The hollow spindle twisting mechanism for producing core-filled braided yarn according to claim 4, characterized in that: The top of the mounting box (51) is fixedly connected to a knob A (6), the bottom of the knob A (6) is fixedly connected to the top of one of the gears (54), and the bottom of the knob A (6) is provided with several limiting grooves (61) evenly distributed in a ring.

6. The hollow spindle twisting mechanism for producing core-filled braided yarn according to claim 5, characterized in that: The top of the mounting box (51) is fixedly connected to two mounting sleeves (7). The two mounting sleeves (7) are symmetrically distributed and both are located below the knob A (6). A limiting pin (71) is slidably connected inside the mounting sleeve (7). A spring (72) is fixedly connected between the bottom of the limiting pin (71) and the bottom wall of the mounting sleeve (7) on the same side. One of the limiting pins (71) is engaged with the limiting groove (61) at the corresponding position, and the other limiting pin (71) is in contact with the bottom surface of the knob A (6).

7. A hollow spindle twisting mechanism for producing core-filled braided yarn according to claim 6, characterized in that: A scale plate (33) is fixedly connected to one side of the top of the false twister (32), and a pointer (83) is fixedly connected to the side of the damping plate (8) near the scale plate (33). The pointer (83) is slidably connected to the scale plate (33).

8. The hollow spindle twisting mechanism for producing core-filled braided yarn according to claim 7, characterized in that: A drive wheel (4) is fixedly connected to the hollow ingot body (31). A drive belt (41) is sleeved between each drive wheel (4) in an S-shape. Each drive wheel (4) is connected to the motor inside the machine body (1) through the drive belt (41).

9. A hollow spindle twisting mechanism for producing core-filled braided yarn according to claim 8, characterized in that: A number of guide rollers (21) are rotatably connected to the machine body (1). The guide rollers (21) are located between the unwinding drum (2) and the hollow spindle body (31). A number of tension adjusters (22) are fixedly connected to the machine body (1). The tension adjusters (22) are located between the guide rollers (21) and the hollow spindle body (31).

10. A hollow spindle twisting process for producing core-filled braided yarn, characterized in that: Based on the hollow spindle twisting mechanism for producing core-filled braided yarn as described in claim 9, the hollow spindle twisting process specifically includes the following steps: S1: First, install the yarn roll on the unwinding drum (2), lead the yarn end out from the unwinding drum (2), pass it around the guide wheel (21) and tension regulator (22) in sequence, and then guide it through the hollow spindle body (31) to the position of the false twister (32) to complete the initial threading of the yarn; S2: Then the operator first rotates the knob B (96) in the opposite direction to make the magnet (94) on the inner wall of the positioning groove (93) separate from the limiting plate (91) on the inner wall of the fixed seat (9). Then, the operator pulls the knob B (96) upward to drive the limiting rod (92) out of the fixed seat (9). At the same time, the limiting rod (92) also exits from the limiting sleeve (82) to complete the disassembly of the limiting rod (92). At this time, a gap is formed between the damping plate (8) and the false twister (32) on the side away from the screw A (52) and the screw B (53). At this time, the operator wraps the yarn from the gap between the damping plate (8) and the false twister (32) on the outer surface of the false twister (32). S3: After the yarn is wound, the operator inserts the limiting rod (92) through the limiting sleeve (82) on one side of the damping plate (8), and then aligns the connecting groove (95) on one side of the bottom of the limiting rod (92) with the limiting plate (91) on the inner wall of the fixed seat (9). Then, the operator presses down the knob B (96) to drive the limiting rod (92) to be inserted into the fixed seat (9) downwards, so that the limiting plate (91) enters the positioning groove (93) on one side of the limiting rod (92) through the connecting groove (95). At this time, the operator rotates the knob B (96) to drive the limiting rod (92) to rotate a certain angle, so that the magnet (94) in the positioning groove (93) is attached to the limiting plate (91) and locked in the fixed seat (9), thus completing the installation of the limiting rod (92). S4: Then the operator turns the knob A (6) on the top of the mounting box (51). The knob A (6) drives the corresponding gear (54) fixedly connected to it inside the mounting box (51) to rotate. The gear (54) drives the other two gears (54) to rotate synchronously and in the same direction through the toothed belt (55) sleeved between each gear (54). The toothed belt (55) ensures that each gear (54) always maintains the same precise speed, thereby ensuring that the screw A (52) and the screw B (53) always rotate synchronously. The three gears (54) respectively drive the screw A (52) and the two screws B (53) fixedly connected below to rotate together. Since the pitch of the screw B (53) is greater than the pitch of the screw A (52), at the same rotation angle, it rotates together with the two screws. The axial displacement of the threaded sleeves (81) on both sides of the threaded connection of B (53) is greater than the displacement of the middle threaded sleeve (81) that is threaded to screw A (52). The three threaded sleeves (81) pull the three corresponding connection points on the damping plate (8) of the elastic arc structure at different heights, so that the damping plate (8) is forced to bend and deform while rising or falling as a whole, and its arc curvature changes accordingly until its inner arc surface is tightly attached to the yarn passed by the outer surface of the false twister (32). At the same time, the pointer (83) fixedly connected to the side of the damping plate (8) near the scale plate (33) slides along the scale plate (33) with the damping plate (8). The operator can accurately grasp the current position and adjustment amount of the damping plate (8) through the scale plate (33). S5: When the knob A (6) is rotated to the desired position, the limiting pins (71) set in the two mounting sleeves (7) are always pushed upward under the elastic force of their respective bottom springs (72). The two limiting pins (71) are staggered in the circumferential direction. During the rotation of the knob A (6), at least one limiting pin (71) is always embedded in the limiting groove (61) at the bottom of the knob A (6), locking the knob A (6) and thus accurately locking the height position of the damping plate (8). S6: Start the motor inside the machine body (1). The motor drives each transmission wheel (4) in an S-shaped winding manner through the transmission belt (41), so that all hollow spindle bodies (31) rotate synchronously at high speed, driving the false twister (32) at the bottom of it to rotate together. During the process of the yarn passing through the hollow spindle body (31), due to the control of the two ends by the drafting mechanism, the rotation of the false twister (32) will generate temporary twist on the yarn segment, thereby increasing the cohesion and strength of the yarn segment. When the yarn leaves the false twister (32), the previous false twist will automatically unwind and disappear. At this time, the subsequent fixed yarn will wrap around the core yarn and decorative yarn in a real twist manner to fix the pattern and finally form the unique structure of the core braided yarn. S7: The finished fancy yarn is wound into a cylinder by the take-up rod (23) located below the unwinding drum (2), and the outer cover (3) provides safety protection for the high-speed rotating hollow spindle body (31). The entire process is completed continuously and synchronously.

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