A silk yarn take-up and pay-off device

Abstract

The application provides a silk fabric take-up and pay-off device, and relates to the technical field of textile machinery.The device comprises a support frame, a winding disc, a magnetic rotating assembly and an electromagnetic driving assembly, the winding disc and the magnetic rotating assembly are coaxially fixedly connected to the support frame through a central rotating shaft, and the electromagnetic driving assembly generates an alternating magnetic field to drive the magnetic rotating assembly to rotate.The scheme adopts a non-contact electromagnetic drive to replace a traditional mechanical drive, avoids wear caused by physical contact, improves running stability and start-stop response speed, reduces vibration noise and simplifies maintenance procedures, and is suitable for efficient take-up and pay-off operation in silk fabric production.

Description

Technical Field

[0001] This application relates to the field of silk fabric technology, and in particular to a silk fabric take-up and undo device. Background Technology

[0002] In the silk fabric production process, the take-up and unwinding device is a key piece of equipment widely used in the textile, dyeing, and finishing stages. Its performance directly affects the control of yarn tension, the neatness of winding, and production efficiency. In existing technologies, silk fabric take-up and unwinding devices generally adopt a mechanical transmission structure. A motor drives a gear set or pulley system to rotate the winding reel, achieving the winding and unwinding of the yarn. This solution typically has a fixed shaft on a support frame, with the winding reel mounted on the shaft via bearings. The power source is transmitted to the winding reel via a reduction mechanism, and a tension adjustment mechanism is also included to maintain stable yarn tension. In actual operation, such devices require continuous yarn path guidance and tension monitoring to ensure the synchronous winding and unwinding of multiple strands of yarn.

[0003] However, in existing technologies, the winding and unwinding process of silk fabrics is often accompanied by insufficient operational stability and frequent maintenance cycles. Summary of the Invention

[0004] This application provides a yarn take-up and undo device for silk fabrics that can solve the problems of complex structure, easy wear, high maintenance cost and slow start-stop response of traditional mechanical transmission.

[0005] To achieve the above objectives, this application provides the following technical solution:

[0006] This application provides a yarn take-up and undo device for silk fabrics, including a support frame and a winding reel. Magnetic rotating components are installed at both ends of the winding reel, and an electromagnetic drive component is installed on the support frame. A central rotating shaft is provided at the center of the winding reel and the magnetic rotating components. The central rotating shaft coaxially and fixedly connects the winding reel and the magnetic rotating components, and the central rotating shaft is rotatably connected to the support frame.

[0007] In one optional embodiment, the central rotating shaft is provided with snap-fit ​​protrusions around its circumference, and the winding disc and magnetic rotating assembly are provided with snap-fit ​​grooves that cooperate with the snap-fit ​​protrusions.

[0008] In one optional embodiment, the magnetic rotation assembly includes a magnetic rotating disk with a limiting groove. The end of the winding disk is engaged in the limiting groove. The magnetic rotating disk has multiple magnetic holes around its circumference, with magnetic blocks embedded in the holes. Locking bolts are installed on the magnetic rotating disk to lock the magnetic rotating disk onto the central rotating shaft.

[0009] In one optional embodiment, the electromagnetic drive assembly includes a lower electromagnetic drive component fixed on a support frame and an upper electromagnetic drive component slidably mounted on the support frame. The lower electromagnetic drive component and the upper electromagnetic drive component form a ring structure and are sleeved on the magnetic rotation assembly.

[0010] In one optional embodiment, a sliding plate is installed on the lower electromagnetic drive component, and a sliding groove is provided on the sliding plate. A sliding protrusion is provided on the upper electromagnetic drive component, and the sliding protrusion is inserted into the sliding groove. A traction component is installed on the lower electromagnetic drive component to pull the upper electromagnetic drive component to move. The traction component is used to offset the upper electromagnetic drive component from the lower electromagnetic drive component, so as to facilitate the installation and disassembly of the winding disc.

[0011] In one optional embodiment, the upper electromagnetic drive and the lower electromagnetic drive include a double-layered arc plate, in which a plurality of electromagnetic coils are installed. A PWM frequency converter is installed on the lower electromagnetic drive. The PWM frequency converter is used to control the upper electromagnetic drive and the lower electromagnetic drive to output an alternating magnetic field for rotation, thereby controlling the rotation of the magnetic rotation assembly.

[0012] In one optional embodiment, a winding limiting assembly is installed on the support frame. The winding limiting assembly includes a limiting frame, a lower limiting roller installed on the limiting frame, a lifting component installed at the upper end of the limiting frame, an upper limiting roller installed on the lifting component, arc-shaped protrusions and arc-shaped grooves provided on the lower and upper limiting rollers, and the arc-shaped grooves on the lower and upper limiting rollers are aligned with each other to form an elliptical structure for the thread to pass through; the arc-shaped protrusions on the lower limiting roller and the arc-shaped protrusions on the upper limiting roller fit together to generate a limiting force for limiting the fabric.

[0013] In one optional embodiment, multiple winding discs are mounted on the central rotating shaft, and the winding discs are aligned with the arc-shaped groove. In another optional embodiment, ratchet wheels are provided at both ends of the lower limit roller and the upper limit roller, and the ratchet wheels are detachably connected to the limiting frame, thereby allowing the lower limit roller and the upper limit roller to change direction.

[0014] In one optional embodiment, a thread guide is installed on the side of the winding limiting assembly near the winding reel, the thread guide corresponding to the winding reel, the thread guide being used to evenly wind the thread onto the winding reel; the thread guide includes a sliding rod fixed on the limiting frame, a threaded rod rotatably mounted on the limiting frame, a displacement block mounted on the threaded rod, the displacement block having a thread hole, the displacement block being slidably connected to the sliding rod, and a thread guiding motor mounted on the limiting frame to control the rotation of the threaded rod, the thread guiding motor controlling the reciprocating motion of the displacement block.

[0015] In summary, this application includes at least one of the following beneficial technical effects:

[0016] 1. This application provides a yarn take-up and undo device for silk fabrics. This solution provides a basic load-bearing structure through a support frame to ensure the overall stability of the device;

[0017] 2. The winding disc enables the orderly winding and unwinding of the yarn. The magnetic rotating components installed at both ends are coaxially and fixedly connected to the central rotating shaft to form a rigid rotating unit.

[0018] 3. Based on this, the electromagnetic drive component installed on the support frame drives the magnetic rotation component through non-contact magnetic field action, avoiding physical contact in traditional mechanical transmission;

[0019] 4. This design utilizes a central rotating shaft to coaxially and fix the winding disc and the magnetic rotating component, and achieves a rotatable connection with the support frame, ensuring dynamic balance during rotation; thereby effectively eliminating frictional losses caused by gear meshing or belt drive, and improving start-stop response speed;

[0020] 5. Ultimately, electromagnetic drive replaces the mechanical transmission structure, significantly reducing operating vibration and noise, extending equipment lifespan, and simplifying maintenance procedures. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application;

[0022] Figure 2 This is a schematic diagram of the magnetic rotation component structure according to an embodiment of this application;

[0023] Figure 3 This is a schematic diagram of the electromagnetic drive component structure according to an embodiment of this application;

[0024] Figure 4 This is a schematic diagram of the second mounting structure of the winding disc according to an embodiment of this application;

[0025] Figure 5 This is a schematic diagram of the winding and limiting component structure according to an embodiment of this application.

[0026] In the diagram: 1. Support frame; 2. Winding disc; 3. Magnetic rotation assembly; 31. Magnetic rotating disc; 32. Limiting groove; 33. Magnetic hole; 34. Magnetic block; 35. Locking bolt; 4. Electromagnetic drive assembly; 41. Lower electromagnetic drive component; 411. Sliding plate; 412. Slide groove; 42. Upper electromagnetic drive component; 422. Traction component; 43. Double-layer arc plate; 44. Electromagnetic coil; 45. PWM frequency converter; 5. Central rotating shaft; 51. Snap-fit ​​protrusion; 6. Winding limiting assembly; 61. Limiting frame; 62. Lower limiting roller; 63. Lifting component; 64. Upper limiting roller; 65. Arc-shaped protrusion; 66. Arc-shaped groove; 67. Ratchet; 7. Cable organizer; 71. Sliding rod; 72. Threaded rod; 73. Displacement block; 74. Cable hole; 75. Cable management motor. Detailed Implementation

[0027] The following is in conjunction with the appendix Figure 1 - Appendix Figure 5This application will be described in further detail below.

[0028] Reference Figure 1 , Figure 2 A silk fabric take-up and undo device includes a support frame 1, a winding disc 2, magnetic rotating components 3 installed at both ends of the winding disc 2, an electromagnetic drive component 4 installed on the support frame 1, and a central rotating shaft 5 set at the center of the winding disc 2 and the magnetic rotating component 3. The central rotating shaft 5 coaxially and fixedly connects the winding disc 2 and the magnetic rotating component 3, and the central rotating shaft 5 is rotatably connected to the support frame 1.

[0029] This embodiment provides a yarn winding and unwinding device for silk fabrics based on the principle of non-contact electromagnetic drive. Its core lies in replacing physical transmission with magnetic field coupling. An alternating magnetic field is generated by the electromagnetic drive component 4, acting on the permanent magnet array in the magnetic rotation component 3 to produce a rotational driving torque. This torque is then transmitted to the winding disc 2 via the central rotating shaft 5, achieving smooth winding and unwinding of the yarn. The entire system eliminates gear meshing, belt slippage, and mechanical clutch action, fundamentally avoiding sources of friction loss and vibration excitation, significantly improving operational reliability and dynamic response capabilities.

[0030] The support frame 1 serves as the basic load-bearing structure for the entire machine, used to fix the electromagnetic drive assembly 4 and constrain the radial runout of the central rotating shaft 5. The number of winding reels 2 can be set individually or arranged in multiple groups in parallel according to process requirements, with each reel winding independently or working together synchronously.

[0031] Magnetic rotating components 3 are arranged in pairs at both ends of the winding disk 2. Each pair includes two symmetrically arranged magnetic rotating disks 31, which are respectively engaged with the end face of the winding disk 2 through a snap-fit ​​structure. Their function is to efficiently convert the rotating magnetic field energy generated by the electromagnetic drive component 4 into mechanical torque, and to ensure the coaxial rotation accuracy of the winding disk 2 through a rigid connection. This component is not limited to a permanent magnet embedded structure, so as to adapt to different power levels and speed regulation response requirements.

[0032] The electromagnetic drive component 4 is fixedly installed on the support frame 1, and its spatial position strictly corresponds to the outer periphery of the magnetic rotation component 3 to ensure uniform air gap and maximize magnetic field coupling efficiency. This component does not rely on mechanical couplings or drive shafts, but only achieves energy transfer through air gaps, eliminating the risk of contact wear.

[0033] The central rotating shaft 5 is a solid stepped shaft structure, with a keyway or spline structure in the middle section, which is used to establish a circumferential positioning connection with the winding disk 2 and the magnetic rotating assembly 3.

[0034] The central rotating shaft 5 coaxially and fixedly connects the winding disk 2 and the magnetic rotating component 3. This connection constitutes a rigid rotating unit: the geometric center of the winding disk 2, the magnetic pole center of the magnetic rotating component 3, and the theoretical rotation axis of the central rotating shaft 5 coincide. This coaxial constraint ensures excellent dynamic balance during high-speed rotation through the unified processing benchmark, and suppresses the transmission of eccentric vibration to the wire path.

[0035] The central rotating shaft 5 is rotatably connected to the support frame 1;

[0036] Through the above technical solution, this application achieves the following: an electromagnetic drive assembly 4 is arranged on the support frame 1, forming a closed magnetic circuit around the magnetic rotation assembly 3; when a three-phase sinusoidal current with a phase difference of 120° is passed into the electromagnetic drive assembly 4, a composite magnetic field with constant amplitude and continuous rotation is generated; this rotating magnetic field cuts the magnetic poles of the embedded magnetic block 34 in the magnetic rotation assembly 3, generating a continuous and directional electromagnetic torque according to Lenz's law and the Lorentz force principle; this torque is transmitted losslessly to the winding disk 2 through the central rotating shaft 5, driving it to rotate at a uniform speed; since the magnetic field coupling does not require physical connection... Since there is no inherent gap, wear, and elastic deformation in mechanical transmission, the starting and stopping process of the winding disc 2 is smooth and impact-free. At the same time, the high-precision rotational connection between the central rotating shaft 5 and the support frame 1, combined with the coaxial rigid fixation of the winding disc 2 and the magnetic rotating component 3, effectively suppresses rotational sway, reduces the tension fluctuation amplitude of the yarn during winding and unwinding, significantly improves the consistency of the winding density and the surface flatness of the silk fabric, and solves the technical problems of unstable winding and unwinding, high yarn breakage rate, and frequent maintenance caused by the accumulation of wear, loose fit and inertial lag of traditional mechanical transmission devices.

[0037] Reference Figure 1 , Figure 2 Based on the above embodiments, this embodiment further provides:

[0038] The central rotating shaft 5 is provided with snap-fit ​​protrusions 51 around its circumference, and the winding disk 2 and the magnetic rotating assembly 3 are provided with snap-fit ​​grooves that mate with the snap-fit ​​protrusions 51. This embodiment achieves precise positioning and torsional resistance between the central rotating shaft 5, the winding disk 2, and the magnetic rotating assembly 3 by setting a circumferential snap-fit ​​structure, ensuring assembly concentricity and improving structural rigidity and torque transmission reliability during rotation. The snap-fit ​​protrusions 51 are evenly distributed along the outer circumference of the central rotating shaft 5, and are radially protruding strip-shaped or trapezoidal cross-section bosses to enhance wear resistance and shear resistance. The snap-fit ​​protrusions 51 can be integrally formed on the body of the central rotating shaft 5, or fixed to the annular base on the outer circumference of the shaft by interference fit or laser welding. Correspondingly, the locking grooves on the winding disc 2 and the magnetic rotating assembly 3 are through grooves or blind grooves that match the contour of the locking protrusion 51, so as to balance assembly clearance and positioning accuracy; the groove depth is not less than 90% of the axial length of the locking protrusion 51 to ensure effective engagement depth; the opening end of the locking groove is provided with a guide chamfer to facilitate assembly introduction. The locking groove can be provided on the inner wall of the center hole of the winding disc 2 or the end face of the center mounting hole of the magnetic rotating disc 31. The magnetic rotating assembly 3 undertakes the circumferential torque transmission function, forming a locking structure.

[0039] During assembly, the central rotating shaft 5 is first inserted into the central hole of the winding disc 2, aligning the snap-fit ​​protrusion 51 with its snap-fit ​​groove. Then, the magnetic rotating assembly 3 is pushed in until the snap-fit ​​protrusion 51 is synchronously embedded in the snap-fit ​​grooves of both. Finally, axial clamping force is applied by the locking bolt 35 to complete the overall fixation. This structure ensures that the installation angle of the winding disc 2 and the magnetic rotating assembly 3 on the central rotating shaft 5 is fixed and there is no relative slippage. When the electromagnetic drive assembly 4 outputs an alternating magnetic field to drive the magnetic rotating assembly 3 to rotate, the torque is directly transmitted to the central rotating shaft 5 through the side contact surface of the snap-fit ​​protrusion 51 and the snap-fit ​​groove. The central rotating shaft 5 then drives the winding disc 2 to rotate synchronously, avoiding slippage caused by loose key connections or interference fit failure. There is no accumulation of clearance between the moving parts, thus suppressing micro-amplitude oscillation and phase shift under high-speed rotation.

[0040] Through the above technical solution, this application achieves the following: without adding additional transmission components (such as gears or couplings), the optimized design of the central rotating shaft 5 body structure alone completes the dual constraint of the winding disc 2 and the magnetic rotating assembly 3 in both the circumferential and axial directions; because the snap-fit ​​protrusion 51 and the snap-fit ​​groove form a rigid limit at the center position, the problem of loosening, misalignment, and shaking of the winding disc and the magnetic rotating assembly on the central rotating shaft in the prior art is solved, thus significantly improving the dynamic concentricity and running stability during the winding and unwinding process, ensuring the accuracy of yarn tension control and the neatness of the fabric edge; this structure also supports quick disassembly and repositioning, is suitable for the replacement of winding discs 2 of various specifications, and all parts can be made using conventional machining processes without the need for special assembly equipment.

[0041] Reference Figure 1 , Figure 3 Based on the above embodiments, this embodiment further provides:

[0042] The magnetic rotation assembly 3 includes a magnetic rotating disk 31, a limiting groove 32 is provided on the magnetic rotating disk 31, the end of the winding disk 2 is engaged in the limiting groove 32, the magnetic rotating disk 31 has multiple magnetic holes 33 around its circumference, the magnetic holes 33 are embedded with magnetic blocks 34, and a locking bolt 35 is installed on the magnetic rotating disk 31 to lock the magnetic rotating disk 31 onto the central rotating shaft 5.

[0043] This embodiment addresses practical problems such as unreliable axial positioning between the magnetic rotation component and the winding disk, low assembly accuracy of the magnetic pole array, and easy loosening of connections under high-speed rotation. It proposes a modular magnetic rotation structure that is compact, has controllable assembly, and provides uniform magnetic field response. The magnetic rotation component 3, as the core driven component in the electromagnetic drive system, functions to convert the external alternating magnetic field into a stable torque and reliably transmit it to the winding disk 2, thereby achieving contactless, low-inertia, and high-response rotational drive during the winding and unwinding process. This structure must simultaneously meet the triple constraints of axial limiting rigidity, radial magnetic circuit integrity, and axial clamping reliability to overcome the synchronization errors and vibration accumulation problems caused by bearing clearances, keyway wear, and loose threads in traditional mechanical transmissions.

[0044] The magnetic rotating disk 31 is an integral annular metal disk. The symmetrically distributed limiting grooves 32 are axially penetrating rectangular grooves, which are evenly distributed along the circumference and are used to form a double snap-fit ​​with the end face flanges of the winding disk 2, which is both surface contact and lateral constraint. The limiting grooves 32 not only provide the axial positioning reference of the winding disk 2 relative to the magnetic rotating disk 31, but also constitute part of the closed magnetic circuit path, reducing magnetic leakage.

[0045] The magnetic holes 33 are cylindrical through holes that penetrate the thickness direction of the magnetic rotating disk 31 and are evenly distributed along the outer circumference of the magnetic rotating disk 31. The circumference diameter of the center of each magnetic hole 33 is the equivalent magnetic pole formed after the magnetic block 34 is embedded in the magnetic rotating disk 31. The locking bolt 35 is installed in the center area of ​​one end face of the magnetic rotating disk 31, so that the end face of the magnetic rotating disk 31 and the positioning step on the central rotating shaft 5 form an axial preload. This preload not only ensures that the magnetic rotating disk 31 does not axially run under dynamic load, but also avoids local stress concentration on the central rotating shaft 5 due to excessive interference.

[0046] The above-mentioned technical features work together: the limiting groove 32 limits the relative axial position between the winding disk 2 and the magnetic rotating disk 31, ensuring that the rotation center of the winding disk 2 strictly coincides with the geometric center of the magnetic pole array; the magnetic hole 33 and the magnetic block 34 together construct a ring-shaped discrete magnetic pole group, whose spatial arrangement density matches the number of pole pairs of the magnetic field output by the electromagnetic drive component 4; the axial clamping force applied by the locking bolt 35 rigidly fixes the magnetic rotating disk 31 to the central rotating shaft 5, so that the magnetic pole array rotates synchronously with the central rotating shaft 5, and prevents the magnetic block 34 from radially displacing or loosening under the action of centrifugal force.

[0047] Through the above technical solution, this application achieves the following: when the electromagnetic drive assembly 4 is powered on, the lower electromagnetic drive component 41 and the upper electromagnetic drive component 42 work together to output a rotating alternating magnetic field. This magnetic field passes through the magnetic block 34 on the outer periphery of the magnetic rotating disk 31 to form a periodic magnetic pull, driving the magnetic rotating disk 31 to rotate around the central axis 5. Since the limiting groove 32 reliably engages the end of the winding disk 2, the winding disk 2 rotates synchronously to complete the winding or unwinding action of the thread. The axial compression state maintained by the locking bolt 35 ensures that there is no axial movement, no magnetic block 34 falling off, and no plastic deformation of the limiting groove 32 within the rated speed range of the entire magnetic rotating assembly 3. This solves the technical problems in the background art, such as large fluctuations in winding and unwinding tension, winding deviation, and abnormal noise of the equipment caused by loose assembly of magnetic components, failure of axial positioning, and unstable magnetic circuit. It significantly improves the stability and consistency of thread transmission during the silk fabric processing.

[0048] Reference Figure 1 3. Based on the above embodiments, this embodiment further provides:

[0049] The electromagnetic drive assembly 4 includes a lower electromagnetic drive component 41 fixed on the support frame 1 and an upper electromagnetic drive component 42 slidably mounted on the support frame 1. The lower electromagnetic drive component 41 and the upper electromagnetic drive component 42 form a ring structure and are sleeved on the magnetic rotation assembly 3.

[0050] The lower electromagnetic drive component 41 is a rigid arc-shaped component, whose bottom surface is rigidly fixed to the transverse support beam of the support frame 1 by bolts or welding. Its arc-shaped inner contour matches the outer diameter of the magnetic rotation component 3, ensuring that the axes of the two coincide after assembly. The upper electromagnetic drive component 42 is another arc-shaped component symmetrically arranged with the lower electromagnetic drive component 41. Its arc angle is slightly less than 180°. It has guide fitting structures at both ends and is connected to the support frame 1 through sliding pairs. It can translate radially in a plane perpendicular to the axis of the central rotating shaft 5. The lower electromagnetic drive component 41 and the upper electromagnetic drive component 42 together form an approximately closed annular space. The inner diameter of the annular structure is larger than the maximum outer diameter of the magnetic rotation component 3, and the center line of the annular structure is coaxial with the central rotating shaft 5, so that the magnetic rotation component 3 can be completely contained within the magnetic field area defined by the annular structure. The annular structure can form a continuous, circumferentially covering electromagnetic excitation field without relying on physical contact, which is suitable for non-contact magnetic coupling drive scenarios.

[0051] "Wrapped on the magnetic rotating component 3" means that the annular structure formed by the combination of the lower electromagnetic drive component 41 and the upper electromagnetic drive component 42 surrounds the magnetic rotating component 3 in space, with a uniform air gap between them. This air gap satisfies the requirements of electromagnetic induction efficiency and avoids mechanical interference during operation. This wrapping relationship does not involve any fastening connection or limiting constraint, and the spatial envelopment is achieved only through the structural positioning of the support frame 1.

[0052] The spatial layout, installation method, and relative motion relationship of the lower electromagnetic drive 41 and the upper electromagnetic drive 42 are mutually compatible: the lower electromagnetic drive 41 provides reference positioning and structural support, while the upper electromagnetic drive 42 achieves dynamic opening and closing of the annular structure through its sliding characteristics; in the closed state, the two together form a complete annular magnetic field source, covering the area where all the magnetic blocks 34 are located around the magnetic rotation component 3; in the open state, the upper electromagnetic drive 42 slides away from its original position, so that the annular structure has a sufficiently wide radial opening, which facilitates the magnetic rotation component 3 together with the winding disk 2 to be installed or removed along the central axis 5 without disassembling the support frame 1 or disassembling other functional components.

[0053] Through the above technical solution, this application achieves the following: while maintaining the efficient and stable non-contact driving capability of the electromagnetic drive component 4 to the magnetic rotation component 3, the original non-removable annular electromagnetic excitation structure is reconstructed into an openable split structure; since the lower electromagnetic drive component 41 is fixed and the upper electromagnetic drive component 42 is slidable, and the two together form an annular structure sleeved on the outer periphery of the magnetic rotation component 3, when it is necessary to install or replace the winding disc 2, it is only necessary to drive the upper electromagnetic drive component 42 to slide and misalign, which can instantly open the annular envelope space, so that the magnetic rotation component 3 can obtain an axial entry and exit channel; this structural change directly avoids the problems in the background technology where the electromagnetic drive component is a rigid closed annular body, which causes the installation path of the winding disc 2 to be blocked, and the disassembly and assembly require the entire machine to be stopped and extensively disassembled, significantly improving the on-site maintainability and replacement efficiency of the equipment, while not sacrificing the torque output capability and response consistency of the electromagnetic drive.

[0054] Reference Figure 1 , Figure 3 Based on the above embodiments, this embodiment further provides:

[0055] A sliding plate 411 is installed on the lower electromagnetic drive component 41, and a sliding groove 412 is provided on the sliding plate 411. A sliding protrusion is provided on the upper electromagnetic drive component 42, and the sliding protrusion is inserted into the sliding groove 412. A traction component 422 is installed on the lower electromagnetic drive component 41 to pull the upper electromagnetic drive component 42 to move. The traction component 422 is used to offset the upper electromagnetic drive component 42 and the lower electromagnetic drive component 41, so as to facilitate the installation and disassembly of the winding disc 2.

[0056] This embodiment provides an openable electromagnetic drive structure, the core of which lies in achieving controllable lateral displacement of the upper electromagnetic drive component 42 relative to the lower electromagnetic drive component 41 through sliding guidance and active traction, thereby maintaining the integrity of the electromagnetic drive function while taking into account the engineering feasibility of equipment assembly and maintenance. The sliding plate 411 is a rigid metal plate or reinforced engineering plastic plate, horizontally fixed along the longitudinal direction of the support frame 1 to the outside of the lower electromagnetic drive component 41; the sliding groove 412 is a continuous rectangular straight groove, and the sliding protrusion is a strip-shaped boss integrally cast or threadedly connected to the upper electromagnetic drive component 42, with a rectangular or T-shaped cross-section, its length covering the effective stroke of the sliding groove 412, and its end rounded to avoid jamming; (the traction component 422 is one of a two-way acting cylinder, a stepper motor with a ball screw pair, or a manually rotated handwheel linked eccentric cam mechanism), its output end is rigidly connected to the upper electromagnetic drive component 42, so that the upper electromagnetic drive component 42 is completely separated from the annular envelope area of ​​the lower electromagnetic drive component 41, forming a radial opening gap to meet the spatial requirements for axial loading / unloading of the winding disc 2.

[0057] The sliding plate 411 and the sliding groove 412 together form a guide reference surface, limiting the upper electromagnetic drive component 42 to translate only along a preset straight trajectory, preventing it from twisting, tilting, or lateral swaying during traction. The sliding protrusion, after embedding into the sliding groove 412, forms a sliding pair. The traction component 422 is installed at the end of the lower electromagnetic drive component 41 near the outer side of the support frame 1, with its axis coinciding with the center line of the sliding groove 412, ensuring that the traction force direction is consistent with the movement direction and avoiding additional bending moment. There are defined relationships between the components. Spatial constraints and motion coupling relationship: The sliding plate 411 is the bearing base of the traction path, and its stiffness directly affects the guiding accuracy of the sliding protrusion; the pushing / pulling force of the traction component 422 must overcome the weight of the electromagnetic drive component itself, the static friction of the sliding pair and the possible magnetic residual force. When the traction component 422 moves, the upper electromagnetic drive component 42 moves synchronously along the direction of the slide groove 412, driving the double-layer arc plate 43 and the embedded electromagnetic coil 44 on it to move synchronously, and finally realize the dynamic opening and closing of the ring electromagnetic field structure.

[0058] Through the above technical solution, this application achieves the following: under the premise that the electromagnetic drive assembly 4 maintains a complete electromagnetic circuit design, the axial installation space of the winding disc 2 can be released only through mechanical opening and closing actions. Specifically, because the sliding plate 411 and the sliding groove 412 constitute a high-precision linear guide structure, and the sliding protrusion is strictly constrained within the guide path, the displacement force applied by the traction member 422 can be efficiently converted into the stable translational motion of the upper electromagnetic drive member 42; and because the traction member 422 has a clear stroke endpoint and locking capability, the upper electromagnetic drive member 42 can reliably switch between the "working closed position" and the "loading and unloading open position". Thus, without damaging the original magnetic field distribution characteristics of the electromagnetic drive assembly 4, without adding additional electromagnetic interference sources, and without changing the relative positional relationship between the central rotating shaft 5 and the magnetic rotating assembly 3, the technical problems of the rigid enclosure of the electromagnetic drive structure in the background technology, which leads to cumbersome, time-consuming, and machine-stopping disassembly operations for replacing the winding disc 2, are solved, significantly improving the on-site maintainability and production line continuity of the silk fabric take-up and unloading device.

[0059] Reference Figure 1 , Figure 3 Based on the above embodiments, this embodiment further provides:

[0060] The upper electromagnetic drive unit 42 and the lower electromagnetic drive unit 41 include a double-layer arc plate 43. Multiple electromagnetic coils 44 are installed in the double-layer arc plate 43. A PWM frequency converter 45 is installed on the lower electromagnetic drive unit 41. The PWM frequency converter 45 is used to control the upper electromagnetic drive unit 42 and the lower electromagnetic drive unit 41 to output an alternating magnetic field for rotation, thereby controlling the rotation of the magnetic rotation assembly 3.

[0061] This embodiment provides a contactless, speed-adjustable wire take-up and unwinding execution structure based on the principle of electromagnetic induction. Its core lies in using a double-layered arc-shaped plate 43 to support multiple spatially distributed electromagnetic coils 44, with a PWM inverter 45 uniformly controlling the amplitude, frequency, and phase relationship of the current. This synthesizes a stable rotating alternating magnetic field within the annular space of the magnetic rotating component 3. This magnetic field undergoes non-contact magnetic coupling with the magnetic blocks 34 embedded in the magnetic rotating disk 31, generating a continuous and directionally controllable electromagnetic torque that drives the winding disk 2 to rotate synchronously. This solution eliminates traditional mechanical transmission paths such as gears, belts, or direct-drive servo motors, fundamentally avoiding problems such as speed fluctuations, positioning deviations, and frequent maintenance caused by friction, wear, gaps, and lubrication failures, significantly improving the long-term operational stability and response accuracy of the system.

[0062] The double-layer arc plate 43 is a concentric ring structure arranged around the circumference of the magnetic rotation component 3. It consists of two layers of arc-shaped metal plates, forming a cavity between them for embedding and fixing multiple electromagnetic coils 44. The outer arc plate provides structural support and magnetic field shielding, while the inner arc plate has a magnetically conductive coating or is made of stacked silicon steel sheets on the side facing the magnetic rotation component 3 to enhance magnetic field guidance and coupling efficiency. The double-layer structure ensures rigidity while adjusting the magnetic circuit reluctance through the interlayer air gap to optimize the magnetic field gradient distribution. The curvature of the double-layer arc plate 43 matches the outer contour of the magnetic rotation component 3 to ensure that the effective driving range covers the entire rotation range of the winding disk 2.

[0063] Multiple electromagnetic coils 44 are evenly distributed along the circumferential direction of the double-layer arc plate 43. Each group contains at least one pair of coil units arranged in a spatially orthogonal or staggered manner to construct a two-phase or multi-phase excitation magnetic field. Each electromagnetic coil 44 is wound with enameled copper wire.

[0064] The PWM inverter 45, based on preset or real-time received speed command signals, precisely controls the instantaneous excitation current waveform of each electromagnetic coil 44 by adjusting the duty cycle of each output channel, enabling the spatial synthetic magnetic field to rotate continuously and steplessly. The synergistic effects of each component are as follows: the double-layer arc plate 43 provides a structural carrier and magnetic circuit guiding foundation for the electromagnetic coils 44; multiple electromagnetic coils 44 are spatially distributed at predetermined angles, forming a physical multi-pole magnetic field source; the PWM inverter 45, as the electrical control hub, applies alternating current with phase recursion to each coil according to a time sequence, causing the magnetic field vector to rotate smoothly in the annular space; this rotating magnetic field penetrates the air gap and couples with the magnetic blocks 34 embedded in the magnetic rotating disk 31 using Lorentz force and magnetic attraction / repulsion, forming a net electromagnetic torque that drives the central rotating shaft 5 to rotate synchronously with the winding disk 2; the lower electromagnetic drive component 41 and the upper electromagnetic drive component 42 form a complete annular drive domain, ensuring the continuity of magnetic field rotation and the balance of torque output, avoiding axial vibration or off-center load caused by unilateral drive.

[0065] Through the above technical solution, this application achieves the following: the double-layer arc plate 43 provides a high coupling area and directional magnetic circuit, multiple electromagnetic coils 44 realize a spatial multi-pole magnetic field distribution, and the PWM frequency converter 45 implements precise phase and frequency control. The three work together to construct a stable and programmable rotating alternating magnetic field. This magnetic field interacts with the magnetic block 34 in the magnetic rotation component 3 in a non-contact manner, thereby solving the common problems of easy wear, slow speed regulation response, high maintenance cost, and unstable tension control in the mechanical transmission method in the background technology. Furthermore, it achieves a wide range, high precision, and low inertia stepless adjustment of the winding disc 2 speed, meeting the adaptive drive requirements of different yarn materials (such as mulberry silk, tussah silk, and polyester filament) under different winding tension and linear speed processes, while ensuring the quiet operation, life reliability, and automation integration compatibility of the whole machine.

[0066] Reference Figure 1 , Figure 5 Based on the above embodiments, this embodiment further provides:

[0067] A winding limiting assembly 6 is installed on the support frame 1. The winding limiting assembly 6 includes a limiting frame 61, a lower limiting roller 62 is installed on the limiting frame 61, a lifting component 63 is installed on the upper end of the limiting frame 61, and an upper limiting roller 64 is installed on the lifting component 63. The lower limiting roller 62 and the upper limiting roller 64 are provided with arc-shaped protrusions 65 and arc-shaped grooves 66. The arc-shaped grooves 66 on the lower limiting roller 62 and the arc-shaped grooves 66 on the upper limiting roller 64 are aligned to form an elliptical structure for the thread to pass through. The arc-shaped protrusions 65 on the lower limiting roller 62 and the arc-shaped protrusions 65 on the upper limiting roller 64 are in contact to generate a limiting force for limiting the silk fabric.

[0068] This embodiment provides a mechanical active limiting structure to address the problems of dynamic yarn deviation, tension fluctuation, and uneven winding during the winding and unwinding process of silk fabrics. This structure achieves dual constraints on the spatial position and lateral movement degree of freedom of the yarn through the combined action of rigid guidance and elastic constraint, without interfering with the continuous movement of the yarn. Its core lies in constructing an adjustable-height, adaptive-envelope, low-damage contact double-roller limiting channel, ensuring that the yarn is stably centered and has a preset tension reference before entering the winding reel.

[0069] Among them, the winding limiting component 6 is a functional module that is independently installed on the support frame 1. Its whole is a rigid assembly structure. The limiting frame 61 is vertically fixed to the side wall of the support frame 1, and the connection is provided with anti-loosening elastic pads. This component does not participate in power transmission, but only undertakes the guiding and limiting functions to ensure that the yarn has completed the posture correction before contacting the winding disc.

[0070] Among them, the limiting frame 61 serves as the basic load-bearing frame, and its vertical section has a groove. The lower limiting roller 62 has locking blocks at both ends, which are engaged in the groove. Therefore, the lower limiting roller 62 and the limiting frame 61 can be detached and installed.

[0071] The lower limit roller 62 is supported at both ends by bearings in the bearing seats of the limit frame 61. The lower limit roller 62 is provided with an arc-shaped protrusion 65, and the axial center line of the arc-shaped groove 66 is parallel to the axis of the lower limit roller 62. The lower limit roller 62 can be a rubber-coated roller to enhance the flexible clamping ability of the ultrafine filament.

[0072] The upper limit roller 64 is slidably mounted on the lifting component 63 in a mirror image symmetrical with the lower limit roller 62, achieving translation without rotation. The geometric parameters of the arc-shaped protrusion 65 and arc-shaped groove 66 of the upper limit roller 64 are completely consistent with those of the lower limit roller 62. When the upper limit roller 64 descends to the working position, its arc-shaped groove 66 is axially aligned and radially coplanar with the arc-shaped groove 66 of the lower limit roller 62.

[0073] The lifting component 63 is a screw-nut type adjustment mechanism, including a lifting block fixed to the top of the limit frame 61 and a lifting telescopic component fixed on the lifting block; the output end of the lifting telescopic component is detachably connected to the limit frame 61, and the bearing seat of the upper limit roller 64 is fixedly connected to the lifting block.

[0074] The arc-shaped protrusions 65 and arc-shaped grooves 66 form a composite limiting interface: when the upper limit roller 64 presses down, the upper and lower arc-shaped protrusions 65 fit together to form an annular extrusion zone, which applies a lateral constraint force to the yarn; while the elliptical channel formed by the alignment of the upper and lower arc-shaped grooves 66 provides longitudinal guidance, with its major axis direction consistent with the yarn's travel direction and its minor axis direction providing maximum constraint stiffness; the two work together to make the yarn naturally present a slightly curved state in the channel, which avoids fiber damage caused by right-angle bending and improves the anti-vibration ability by utilizing bending stiffness.

[0075] The spatial relationships and functional coupling between the components are as follows: The vertical displacement of the lifting component 63 directly determines the distance between the upper limit roller 64 and the lower limit roller 62, thereby controlling the minor axis dimension of the elliptical channel and the contact pressure between the arc-shaped protrusions 65; This distance change synchronously alters the shape of the yarn envelope cross section and the contact wrap angle, thus affecting the magnitude and distribution of the limiting force; The alignment accuracy of the arc-shaped groove 66 depends on the manufacturing tolerance of the limiting frame 61 and the guiding stiffness of the lifting component 63, ensuring the geometric consistency of the channel; The contact state of the upper and lower arc-shaped protrusions 65 is controlled by the coaxiality and surface flatness of the roller body, preventing local stress concentration from causing yarn scratches.

[0076] Through the above technical solution, this application achieves the following: In the winding and unwinding operation of silk fabrics, before the silk thread is led out from the guide device and enters the winding reel 2, it first enters the elliptical limiting channel jointly formed by the lower limiting roller 62 and the upper limiting roller 64; since the lifting component 63 pre-sets and locks the height of the upper limiting roller 64, the upper and lower arc-shaped grooves 66 are strictly aligned, and the silk thread is constrained within the elliptical cross section to move stably along the axial direction, eliminating left and right swinging and up and down jumping; at the same time, the upper and lower arc-shaped protrusions 65 are tightly attached under the action of roller surface pressure, forming symmetrical elastic compression bands on both sides of the silk thread, generating a controllable lateral limiting force, suppressing the instantaneous deviation caused by the sudden change in tension; this limiting force does not hinder the axial movement of the silk thread, but significantly improves its lateral movement damping, so that the silk thread is always in the preset trajectory and tension reference state when entering the winding reel 2; therefore, it effectively solves the problems of easy deviation, jumping and uneven tension of silk thread during winding and unwinding in the background technology, and improves the winding neatness, interlayer density consistency and the physical performance stability of the final silk fabric.

[0077] Reference Figure 4 , Figure 5 Based on the above embodiments, this embodiment further provides that: multiple winding discs 2 can be installed on the central rotating shaft 5, and the winding discs 2 are aligned with the arc-shaped grooves 66. This embodiment integrates multiple winding discs 2 on a single central rotating shaft 5, and ensures that the spatial position of each winding disc 2 strictly corresponds to the arc-shaped groove 66 formed by the lower limit roller 62 and the upper limit roller 64 in the winding limiting assembly 6, thereby achieving synchronous, independent, and orderly winding and unwinding operations for multiple strands of yarn. Among them, the central rotating shaft 5 serves as a common drive reference shaft, undertaking the coaxial support and power transmission functions of all winding discs 2; the multiple winding discs 2 are arranged at intervals along the axial direction of the central rotating shaft 5, with two or more discs. The radial projection profile of each winding disc 2 coincides with the center line of the arc-shaped groove 66 at the corresponding position on a plane perpendicular to the central rotating shaft 5, that is, the two maintain geometric alignment in both the horizontal and vertical directions, so that the yarn drawn from any winding disc 2 can naturally fall into the elliptical channel formed by a set of upper and lower arc-shaped grooves 66 directly opposite it after being guided, avoiding crossing, overlapping, or offset. Among them, "relative alignment" means that the center point of the wire outlet end face of the winding disc 2 and the geometric center line of the arc groove 66 are within the equipment installation reference plane. This alignment relationship can be ensured by adjusting the axial positioning accuracy of the central rotating shaft 5 on the support frame 1, the machining tolerance of the installation reference plane of the limit frame 61 on the support frame 1, and the fine adjustment stroke of the lifting component 63.

[0078] Each set of corresponding upper and lower arc-shaped grooves 66 are distributed in a mirror-symmetric manner in the vertical direction, jointly defining the lateral constraint width and longitudinal envelope height of the thread passage path; this alignment relationship does not depend on the overall movement of the winding limiting component 6, but is maintained by the precision installation reference surface between the limiting frame 61 and the support frame 1 and the vertical guiding accuracy of the lifting component 63.

[0079] Each winding disc 2 and its corresponding arc-shaped groove 66 form a one-to-one spatial guidance relationship, that is, the i-th winding disc 2 corresponds only to the i-th group of arc-shaped grooves 66. The two always maintain static geometric alignment during equipment operation and do not undergo relative displacement mismatch with the adjustment action of the lifting component 63.

[0080] Through the above technical solution, this application achieves the following: when the central rotating shaft 5 drives multiple winding discs 2 to rotate synchronously under the action of the electromagnetic drive component 4, the threads wound and unwound by each winding disc 2 are precisely guided into the arc-shaped groove 66 channel that is strictly aligned with it. Because each winding disc 2 is coaxial and rotates at the same speed, the linear velocity, acceleration and tension change patterns of the multiple threads are completely consistent. Furthermore, because each thread has an independent and geometrically defined guide channel, there is no spatial interference between them, and the thread trajectories are parallel and neatly arranged. Thus, without increasing the complexity of the drive system, the thread processing capacity per unit time is significantly improved. At the same time, the problems of thread winding disorder, skipped threads, scratches and tension changes caused by asynchronous operation of multiple discs or misalignment of guides are avoided, ensuring the continuity and quality stability of the silk fabric winding and unwinding process.

[0081] When the fabric is wound on the winding disc 2, the lower limit roller 62 and the upper limit roller 64 limit the silk fabric, and the fabric comes into contact with the arc-shaped protrusion 65, which effectively prevents the fabric from shifting left and right during the winding and unwinding process and improves the stability of the silk fabric conveying.

[0082] When the lower limiting roller 62 and the upper limiting roller 64 limit the wire, the wire passes through the elliptical channel formed by the upper and lower arc-shaped grooves 66 to avoid crossing, overlapping or shifting.

[0083] Reference Figure 1 , Figure 5 Based on the above embodiments, this embodiment further provides:

[0084] The lower limit roller 62 and the upper limit roller 64 are provided with ratchet 67 at both ends. The ratchet 67 is detachably connected to the limit frame 61, so that the lower limit roller 62 and the upper limit roller 64 can be reversed.

[0085] The core of the technical solution in this embodiment lies in: by configuring detachable ratchet wheels 67 at both ends of the lower limit roller 62 and the upper limit roller 64, the roller body can be rotated and reinstalled around its own axis, thereby changing the spatial orientation of its arc-shaped protrusion 65 and arc-shaped groove 66, adapting to the limiting requirements under different wiring paths, tension distributions, or process cycles. This structure does not rely on the overall replacement of the roller body or the reconstruction of the support frame; the direction adjustment can be completed through conventional disassembly and assembly operations, combining structural simplicity, ease of operation, and functional flexibility.

[0086] During the conveying of silk fabric, the lower limit roller 62 and the upper limit roller 64 can only rotate in one direction, which improves the stability of the fabric winding.

[0087] The lower limit roller 62 and the upper limit roller 64 are rigid cylindrical rollers installed coaxially opposite each other. Their outer circumferences are integrally formed with two sets of symmetrically distributed arc-shaped protrusions 65 and arc-shaped grooves 66 along the generatrix direction. The arc-shaped protrusions 65 have a radially protruding arc cross-section structure. Together, they form an elliptical guide channel for threading and clamping the wire.

[0088] This directional adjustment capability does not change the kinematic relationship between the roller body and the lifting component 63 or the limiting frame 61, nor does it affect the vertical stroke adjustment function of the lifting component 63 on the upper limit roller 64.

[0089] Through the above technical solution, it is achieved that, without adding a drive mechanism, changing the overall configuration of the winding limiting component 6, or interrupting the equipment operation process, the spatial orientation of the arc-shaped protrusions 65 and arc-shaped grooves 66 of the lower limiting roller 62 and the upper limiting roller 64 can be dynamically reconstructed simply by manually disassembling and assembling the ratchet 67 and rotating the roller. Because the ratchet 67 is detachably connected to the limiting frame 61, and the ratchet 67 itself has indexing and positioning capabilities, it can stably maintain the directional state after the rollers are swapped. Because both ends of the lower limiting roller 62 and the upper limiting roller 64 are equipped with ratchet 67s of the same structure, the direction of either roller can be independently adjusted to achieve an asymmetrical limiting mode. Because the arc-shaped protrusions 65 and arc-shaped grooves 66 are symmetrically distributed along the circumference of the roller, the complete elliptical yarn channel geometry can still be maintained after the roller rotates. This solves the technical problems of poor process adaptability and inability to match diverse yarn directions and tension directions caused by the fixed direction of the limiting rollers in the background technology, achieving the technical effects of improving the equipment's flexible operation capability and expanding the applicable fabric types and weaving process range.

[0090] The ratchet 67 causes the lower limit roller 62 and the upper limit roller 64 to rotate in one direction. The lower limit roller 62 and the upper limit roller 64 generate a clamping force on the fabric. After the fabric is cut, it will not separate from the lower limit roller 62 and the upper limit roller 64 under tension, which makes it easy to quickly rewind onto the winding disc 2. This makes the fabric conveying more stable.

[0091] The ratchet 67 is installed at both ends of the lower limit roller 62 and the upper limit roller 64. The direction of fabric conveying can be realized by turning the direction of the lower limit roller 62 and the upper limit roller 64.

[0092] When feeding the thread, the thread can be pressed between the arc-shaped protrusions 65 and the clamping point of the arc-shaped protrusions 65. Under the action of the ratchet 67, the thread will not separate from the lower limit roller 62 and the upper limit roller 64, thus making it easier to replace the winding disc 2 and making it more convenient to connect the thread to the winding disc 2.

[0093] Reference Figure 5 Based on the above embodiments, this embodiment further provides:

[0094] A thread guide 7 is installed on the side of the winding limit assembly 6 near the winding reel 2. The thread guide 7 corresponds to the winding reel 2 and is used to make the thread evenly wound on the winding reel 2. The thread guide 7 includes a sliding rod 71 fixed on the limit frame 61. A threaded rod 72 is rotatably installed on the limit frame 61. A displacement block 73 is installed on the threaded rod. A thread hole 74 is provided on the displacement block 73. The displacement block 73 is slidably connected to the sliding rod 71. A thread guiding motor 75 is installed on the limit frame 61 to control the rotation of the threaded rod 72. The thread guiding motor 75 controls the reciprocating motion of the displacement block 73.

[0095] During use, the thread organizer 7 passes the thread through the thread hole 74. The thread organizer motor 75 rotates forward / reverse, driving the thread rod 72 to rotate forward / reverse, thereby controlling the displacement block 73 to move back and forth on the sliding rod 71. The number of rotations of the thread organizer motor 75 is set according to the width of the winding disc 2, controlling the displacement block 73 to move, thereby achieving uniform winding of the thread on the winding disc 2.

[0096] Multiple displacement blocks 73 can be installed on the drive threaded rod 72 and the sliding rod 71 according to the number of winding discs 2, so that multiple threads can be wound on multiple winding discs 2 at the same time.

[0097] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A device for taking in and releasing silk fabrics, characterized in that: The system includes a support frame (1), a winding disc (2), magnetic rotating components (3) installed at both ends of the winding disc (2), an electromagnetic drive component (4) installed on the support frame (1), a central rotating shaft (5) provided at the center of the winding disc (2) and the magnetic rotating component (3), the central rotating shaft (5) coaxially and fixedly connecting the winding disc (2) and the magnetic rotating component (3), and the central rotating shaft (5) rotatably connecting the support frame (1); a winding limiting component (6) is installed on the support frame (1), the winding limiting component (6) includes a limiting frame (61), a lower limiting roller (62) installed on the limiting frame (61), a lifting component (63) installed on the upper end of the limiting frame (61), an upper limiting roller (64) installed on the lifting component (63), and arc-shaped protrusions (65) provided on the lower limiting roller (62) and the upper limiting roller (64). The limiting roller (64) is provided with an arc-shaped groove (66). The arc-shaped groove (66) on the lower limiting roller (62) is aligned with the arc-shaped groove (66) on the upper limiting roller (64) to form an elliptical structure for the thread to pass through. The arc-shaped protrusion (65) on the lower limiting roller (62) fits against the arc-shaped protrusion (65) on the upper limiting roller (64) to generate a limiting force for limiting the fabric. The magnetic rotation assembly (3) includes a magnetic rotation mechanism. The magnetic rotating disk (31) is provided with a limiting groove (32), and the end of the winding disk (2) is engaged in the limiting groove (32). The magnetic rotating disk (31) has multiple magnetic holes (33) around its circumference, and magnetic blocks (34) are embedded in the magnetic holes (33). The magnetic rotating disk (31) is equipped with locking bolts (35), which are used to lock the magnetic rotating disk (31) onto the central rotating shaft (5).

2. The silk fabric take-up and undo device according to claim 1, characterized in that, The central rotating shaft (5) is provided with snap-fit ​​protrusions (51) around its circumference, and the winding disc (2) and the magnetic rotating assembly (3) are provided with snap-fit ​​grooves that cooperate with the snap-fit ​​protrusions (51).

3. A yarn take-up and undo device for silk fabrics according to claim 2, characterized in that, The electromagnetic drive assembly (4) includes a lower electromagnetic drive component (41) fixed on the support frame (1) and an upper electromagnetic drive component (42) slidably mounted on the support frame (1). The lower electromagnetic drive component (41) and the upper electromagnetic drive component (42) form a ring structure and are sleeved on the magnetic rotation assembly (3).

4. A yarn take-up and undo device for silk fabrics according to claim 3, characterized in that, A sliding plate (411) is installed on the lower electromagnetic drive (41), and a sliding groove (412) is provided on the sliding plate (411). A sliding protrusion is provided on the upper electromagnetic drive (42), and the sliding protrusion is inserted into the sliding groove (412). A traction member (422) for traction of the upper electromagnetic drive (42) is installed on the lower electromagnetic drive (41). The traction member (422) is used to separate the upper electromagnetic drive (42) and the lower electromagnetic drive (41) to facilitate the installation and disassembly of the winding disc (2).

5. A yarn take-up and undo device for silk fabrics according to claim 4, characterized in that... The upper electromagnetic drive (42) and the lower electromagnetic drive (41) include a double-layer arc plate (43), in which multiple electromagnetic coils (44) are installed. A PWM frequency converter (45) is installed on the lower electromagnetic drive (41). The PWM frequency converter (45) is used to control the upper electromagnetic drive (42) and the lower electromagnetic drive (41) to output a rotating alternating magnetic field, thereby controlling the rotation of the magnetic rotation assembly (3).

6. A yarn take-up and undo device for silk fabrics according to claim 5, characterized in that, Multiple winding discs (2) are installed on the central rotating shaft (5), and the winding discs (2) are aligned with the arc-shaped groove (66).

7. A yarn take-up and undo device for silk fabrics according to claim 6, characterized in that, The lower limit roller (62) and the upper limit roller (64) are provided with ratchet wheels (67) at both ends. The ratchet wheels (67) are detachably connected to the limit frame (61), thereby allowing the lower limit roller (62) and the upper limit roller (64) to change direction.

8. A yarn take-up and undo device for silk fabrics according to claim 7, characterized in that, A thread guide (7) is installed on the side of the winding limit assembly (6) near the winding reel (2). The thread guide (7) corresponds to the winding reel (2) and is used to make the thread evenly wound on the winding reel (2). The thread guide (7) includes a sliding rod (71) fixed on the limit frame (61). A threaded rod (72) is rotatably installed on the limit frame (61). A displacement block (73) is installed on the threaded rod. A thread hole (74) is provided on the displacement block (73). The displacement block (73) is slidably connected to the sliding rod (71). A thread guiding motor (75) is installed on the limit frame (61) to control the rotation of the threaded rod (72). The thread guiding motor (75) controls the reciprocating motion of the displacement block (73).

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