High-speed precise flying fork winding structure and method of use thereof

Abstract

This invention discloses a high-speed precision fly fork winding structure and its usage method, including a connecting rod, a rotating frame rotatably mounted at the end of the connecting rod, and a counterweight fixedly mounted at the end of the connecting rod. The rotating frame is located outside the counterweight. A wire exit cantilever is connected to the outer wall of the rotating frame, and a wire exit assembly is installed inside the wire exit cantilever. A counterweight cantilever is installed on the other side of the rotating frame, and the weight of the counterweight cantilever is the same as the weight of the wire exit assembly of the wire exit cantilever frame. By symmetrically arranging the wire exit cantilever and the counterweight cantilever with counterweight on both sides of the rotating frame, the mass distribution on both sides is precisely matched to achieve rotational dynamic balance. Combined with internal wire routing and multiple sets of wire exit wheels for stable wire feeding, this solves the problems of large high-speed vibration, insufficient rigidity, and easy wire tip deviation of a single-sided cantilever fly fork, effectively improving the winding speed and winding accuracy.

Description

Technical Field

[0001] This invention relates to the field of fly fork winding technology, and more specifically, to a high-speed precision fly fork winding structure and its usage method. Background Technology

[0002] The flying fork winding mechanism is the core actuator of the automatic winding equipment for motor stators. It mainly drives the wire nozzle to make a circular motion through high-speed rotation, so as to orderly wind the enameled wire into the wire slots of the stator core. Its rotation speed, running stability and wire nozzle positioning accuracy directly determine the quality, consistency and production efficiency of the coil winding. It is a key device to ensure the performance of motor winding and the winding processing capacity, and is widely used in the mass winding production of various motor stators.

[0003] Currently, the industry generally adopts a single-sided cantilevered flying fork structure, in which a solid arm extends from one side of the main shaft, with a wire nozzle and guide wheel installed at the end. It is driven to rotate by the main shaft and completes the winding operation in conjunction with the axial wire laying mechanism. This structure has a simple overall form and low processing and manufacturing cost, and is the mainstream configuration of current winding equipment.

[0004] However, the mass distribution of a single-sided cantilever structure is asymmetrical, resulting in poor dynamic balance performance during high-speed rotation, high vibration and noise, and easy to cause wire tension fluctuations, leading to problems such as wire breakage and wire misalignment. At the same time, the solid arm body is heavy and has a high moment of inertia, resulting in slow acceleration and deceleration response, making it difficult to adapt to the pace requirements of high-speed winding. In addition, the cantilever structure has limited bending and torsional stiffness, and is prone to deformation under high-speed operation and wire tension, causing the wire nozzle trajectory to deviate and reducing winding accuracy. Furthermore, the single-sided structure has limited operating space, making wire threading, nozzle adjustment, and daily maintenance operations less convenient. Summary of the Invention

[0005] This invention provides a high-speed precision flying fork winding structure and its usage method. By symmetrically arranging the lead-out cantilever and counterweight cantilever on both sides of the rotating frame, balanced weight distribution of the rotating mass is achieved, improving high-speed dynamic balance performance and structural rigidity, thereby solving the problems mentioned in the background art.

[0006] To achieve the above objectives, the high-speed precision flying fork winding structure includes a connecting rod, a rotating frame rotatably mounted at the end of the connecting rod, a counterweight fixedly mounted at the end of the connecting rod, and the rotating frame located outside the counterweight. The outer wall of the rotating frame is connected to a cable outlet cantilever, and a cable outlet assembly is installed inside the cable outlet cantilever. The rotating frame is equipped with a counterweight cantilever on the other side of the outgoing cantilever, and the weight of the counterweight cantilever is the same as the weight of the outgoing assembly of the outgoing cantilever frame.

[0007] By adopting the above technical solution, the structure of the wire cantilever and counterweight cantilever arranged symmetrically on both sides of the rotating frame makes the overall mass distribution of the rotating body balanced, greatly improves the dynamic balance performance of high-speed rotation, reduces vibration and noise, and is suitable for winding operations at higher speeds.

[0008] As a further description of the above technical solution: the cable outlet assembly includes a cable channel formed inside the connecting rod and the rotating frame, the cable channel inside the connecting rod and the rotating frame are interconnected, and multiple cable outlet wheels are rotatably installed inside the cable outlet cantilever.

[0009] By adopting the above technical solution, using internal wiring and multiple sets of lead-out wheels for guidance, the wire conveying path is smooth, the wire tension can be stably controlled, the wire feeding fluctuation can be reduced, and the winding flatness can be improved.

[0010] As a further description of the above technical solution: the inside of the cable outlet cantilever is provided with multiple mounting slots, and the cable outlet wheel is rotatably installed inside the mounting slot.

[0011] By adopting the above technical solution, the lead-out wheel is positioned and installed through the mounting slot, ensuring precise wheel positioning, smooth rotation, high guiding accuracy, and easy disassembly, maintenance, and replacement.

[0012] As a further description of the above technical solution: the counterweight cantilever is provided with a plurality of counterweight blocks, the number and installation position of which correspond one-to-one with the cable wheel.

[0013] By adopting the above technical solution, using counterweights corresponding to the number and position of the lead-out wheels, the weight distribution on the lead-out side is precisely matched, achieving symmetrical mass balance across the entire boom section and further optimizing the dynamic balance effect.

[0014] As a further description of the above technical solution: the outgoing line cantilever and the counterweight cantilever are symmetrically arranged with respect to the rotation axis of the rotating frame.

[0015] By adopting the above technical solution, the double cantilever is arranged symmetrically along the axis of rotation. During rotation, the centrifugal forces cancel each other out, the radial load is uniform, which effectively improves the bending and torsional stiffness of the overall structure, reduces high-speed deformation, and ensures the accuracy of the line nozzle trajectory.

[0016] As a further description of the above technical solution: A high-speed precision flying fork winding structure and its usage method, the use of a high-speed precision flying fork winding structure includes the following steps: S1. Pass the wire through the connecting rod and the inside of the rotating frame in sequence, and lead it out through the wire outlet assembly inside the wire outlet arm to the wire outlet end of the wire outlet arm; S2. Drive the rotating frame to rotate relative to the connecting rod. The cable outlet arm and the counterweight arm rotate synchronously with the rotating frame, and the cable is continuously fed out from the cable outlet end of the cable outlet arm. S3. During the winding process, the counterweight cantilever balances the weight of the lead-out cantilever and the lead-out assembly with its own weight, so that the mass on both sides of the rotating frame remains balanced.

[0017] By adopting the above technical solution and using a symmetrical counterweight winding method, the mass balance of the rotating body can be maintained continuously during high-speed rotation, effectively reducing vibration, stabilizing wire tension, and achieving high-speed, high-precision stable winding.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows: By setting up counterweight cantilever arms symmetrical to the lead-out cantilever, and cooperating with counterweight blocks that correspond one-to-one with the lead-out wheels, precise symmetrical balance of mass is achieved on both sides of the rotating frame. This solves the problems of poor dynamic balance, large high-speed vibration, easy wire breakage, and messy wire arrangement in traditional single-sided cantilever flying forks. It can effectively increase the winding speed and reduce vibration and noise. At the same time, the symmetrical double cantilever structure has stronger overall bending and torsional rigidity, smaller deformation at high speed, and more accurate and stable wire nozzle trajectory. The winding accuracy and consistency are greatly improved. In addition, the double-sided structure provides ample operating space, making wire threading, nozzle adjustment, and daily maintenance more convenient, effectively improving production and debugging efficiency. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a cross-sectional structural diagram of the present invention; Figure 3 This is an enlarged structural schematic diagram of the counterweight block of the present invention; Figure 4 This is a schematic diagram of the rotation of the counterweight block of the present invention.

[0020] The meanings of the labels in the diagram are as follows: 1. Connecting rod; 2. Rotating frame; 3. Counterweight; 4. Cable exit cantilever; 41. Mounting slot one; 5. Cable exit wheel; 6. Counterweight cantilever; 7. Counterweight one. Detailed Implementation

[0021] The technical solutions of this invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this invention, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0022] The existing single-sided cantilever flying fork winding mechanism has problems such as asymmetrical mass distribution, poor dynamic balance at high speed, and large vibration. In addition, the solid cantilever has a large moment of inertia and insufficient structural rigidity, making it difficult to meet the production requirements of high-speed precision winding. At the same time, the single-sided structure has limited maintenance and operation space and insufficient debugging convenience.

[0023] To address the aforementioned industry pain points, this invention proposes a high-speed precision flying fork winding structure and its usage method, referencing... Figure 1-4 As shown, it includes a connecting rod 1, and a rotating frame 2 is rotatably mounted at the end of the connecting rod 1. The rotating frame 2 is a rotating body structure that can rotate smoothly and at high speed around the axis of the connecting rod 1. It is the core rotating component that drives the cantilever to rotate. The power input structure is integrated inside the rotating frame 2 and can be connected to the drive system to achieve high-speed rotation drive. A counterweight 3 is fixedly mounted at the end of the connecting rod 1. The counterweight 3 is located inside the rotating frame 2 to ensure that the rotating frame 2 is perpendicular to the ground when it rotates.

[0024] A wire exit cantilever 4 is fixedly connected to one side of the outer wall of the rotating frame 2. The wire exit cantilever 4 extends outward along the radial direction of the rotating frame 2 and is a functional arm for wire guidance and exit. It provides installation space for internal guiding components. A wire exit assembly is installed inside the wire exit cantilever 4. The wire exit assembly is used to guide the wire to be delivered smoothly, control the wire tension and exit direction, and ensure stable wire delivery during the winding process.

[0025] The cable delivery assembly includes cable channels inside the connecting rod 1 and the rotating frame 2. The cable channels inside the connecting rod 1 and the rotating frame 2 are interconnected to form a continuous internal cable routing channel. After the cable enters from the tail of the connecting rod, it can be smoothly transported to the cantilever end along the internal cable channels. The internal cable routing method can provide comprehensive protection for the cable, avoid the cable from shaking or scratching the equipment parts during high-speed rotation, ensure the stability of cable delivery, and reduce the contamination of the cable by external dust and oil.

[0026] Multiple lead-out wheels 5 are rotatably mounted inside the lead-out cantilever 4. All lead-out wheels 5 are staggered along the length of the lead-out cantilever 4. The wire passes around the groove of each lead-out wheel 5 in sequence. The rolling guide greatly reduces the frictional resistance of wire feeding, making the wire feeding smoother. It can effectively buffer the instantaneous tension fluctuations during wire feeding, stabilize the wire tension, reduce the problem of uneven winding and wire breakage caused by tension fluctuations, and improve the flatness and consistency of coil winding.

[0027] The cable outlet cantilever 4 has multiple mounting slots 41 inside. The position and number of mounting slots 41 are precisely set according to the arrangement requirements of the cable outlet wheel 5. The cable outlet wheel 5 is installed inside the corresponding mounting slot 41 by rotating through the wheel axle.

[0028] A counterweight cantilever 6 is fixedly installed on the other side of the rotating frame 2 and the cable outlet cantilever 4. The counterweight cantilever 6 also extends outward along the radial direction of the rotating frame 2 and is arranged on both sides of the rotating frame 2 with the cable outlet cantilever 4. The overall outline is consistent with the cable outlet cantilever 4. Multiple counterweight blocks 7 are set inside the counterweight cantilever 6. The number and installation position of the counterweight blocks 7 correspond one-to-one with the cable outlet wheel 5, so that the weight distribution on the side of the counterweight cantilever 6 is completely matched with the side of the cable outlet cantilever 4. The overall weight of the counterweight cantilever 6 is exactly the same as the total weight of the cable outlet cantilever 4 and the internal cable outlet components.

[0029] Through a one-to-one segmented counterweight design, the weight distribution caused by the installation of the cable wheel 5 on the cable outlet side can be precisely balanced, achieving full arm mass symmetry from the root to the end of the entire rotating body, rather than just overall weight balance. This allows the centrifugal forces of each segment to cancel each other out during rotation, resulting in better dynamic balance, smoother high-speed rotation, and effective reduction of vibration amplitude and operating noise.

[0030] The lead-out cantilever 4 and the counterweight cantilever 6 are symmetrically arranged with respect to the rotation axis of the rotating frame 2, and their lengths, cross-sectional profiles, and extension angles are all consistent. The symmetrical double-cantilever structure ensures that the mass and stiffness on both sides of the rotating frame 2 are symmetrically distributed. The centrifugal forces generated during rotation are equal in magnitude and opposite in direction, thus canceling each other out. This significantly reduces the radial vibration of the rotating body and the bearing load, extending the bearing life. At the same time, the symmetrical support structure of the double cantilever significantly improves the overall bending and torsional stiffness compared to a single-sided cantilever. The deformation under high-speed operation and wire tension is smaller, which can effectively ensure the accuracy of the movement trajectory of the lead-out nozzle, avoid wire misalignment and coil size deviation caused by nozzle offset, and improve the consistency and accuracy of winding.

[0031] A method of using a high-speed precision fly fork winding structure, comprising the following steps: S1. Threading preparation: Thread the enameled wire through the tail of the connecting rod 1, and feed it forward along the line connecting the connecting rod 1 and the inside of the rotating frame 2. After entering the wire exit arm 4, guide it by passing through multiple wire exit wheels 5 inside in sequence, and finally lead it out from the end of the wire exit arm 4 to complete the threading and preparation of the wire. Adjust the wire tension to a suitable range. S2. Winding operation: The drive mechanism drives the rotating frame 2 to rotate at high speed relative to the connecting rod 1. The lead-out cantilever 4 and the counterweight cantilever 6 move in a circular motion synchronously with the rotating frame 2. The wire is continuously and stably fed out from the lead-out end of the lead-out cantilever 4. With the axial winding action and indexing action of the rotor, the enameled wire is wound in an orderly manner in the corresponding slot of the rotor core, completing the winding operation of the entire coil. S3. Dynamic balance compensation: During the entire winding process, the counterweight cantilever 6 and the internal counterweight blocks 7 form a symmetrical mass distribution along the entire arm section with the lead-out cantilever 4 and the lead-out wheels 5 on the other side. This balances the weight on both sides of the rotating frame 2 and the centrifugal force generated by the rotation, ensuring that the rotating frame 2 as a whole always maintains a good dynamic balance, reducing high-speed vibration, stabilizing wire tension, and ensuring continuous and stable operation during the winding process.

[0032] Working principle: When the rotating frame 2 rotates at high speed around the axis of the connecting rod 1, the wire exiting cantilever 4 and the counterweight cantilever 6, which are symmetrically arranged on both sides, rotate synchronously. The counterweight cantilever 6 and the internal counterweight block 7 precisely match the weight distribution on the wire exiting side, balancing the overall mass and centrifugal force of the rotating body, improving the high-speed dynamic balance performance, and reducing vibration and noise. The wire is fed into the internal channel of the connecting rod 1, and after being guided by the wire exiting wheel 5 in the wire exiting cantilever 4, it is stably delivered. The symmetrical double cantilever structure improves the overall bending and torsional stiffness, reduces the deformation of the arm body under high-speed operation, and ensures the accurate movement trajectory of the wire nozzle, ultimately achieving high-speed, high-precision, and stable winding operation.

[0033] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-speed precision flying fork winding structure, comprising a connecting rod (1), characterized in that: A rotating frame (2) is rotatably mounted on the end of the connecting rod (1), and a counterweight (3) is fixedly mounted on the end of the connecting rod (1). The rotating frame (2) is located outside the counterweight (3). The outer wall of the rotating frame (2) is connected to a cable outlet arm (4), and a cable outlet assembly is installed inside the cable outlet arm (4); The rotating frame (2) is equipped with a counterweight cantilever (6) on the other side of the outgoing cantilever (4). The weight of the counterweight cantilever (6) is the same as the weight of the outgoing assembly of the outgoing cantilever (4).

2. The high-speed precision flying fork winding structure according to claim 1, characterized in that: The cable outlet assembly includes cable channels opened inside the connecting rod (1) and the rotating frame (2), and the cable channels inside the connecting rod (1) and the rotating frame (2) are interconnected. Multiple cable outlet wheels (5) are installed in the internal transmission of the cable outlet cantilever (4).

3. The high-speed precision flying fork winding structure according to claim 2, characterized in that: The cable cantilever (4) has multiple mounting slots (41) inside, and the cable wheel (5) is rotatably installed inside the mounting slots (41).

4. The high-speed precision flying fork winding structure according to claim 2, characterized in that: The counterweight cantilever (6) is provided with multiple counterweight blocks (7) inside, and the number and position of the counterweight blocks (7) are the same as those of the lead wheel (5).

5. The high-speed precision flying fork winding structure according to claim 1, characterized in that: The outgoing cantilever (4) and the counterweight cantilever (6) are symmetrically arranged with respect to the rotation axis of the rotating frame (2).

6. A high-speed precision flying fork winding structure and its usage method, wherein the high-speed precision flying fork winding structure according to claim 1 is characterized in that, Includes the following steps: S1. Pass the wire through the wire channel inside the connecting rod (1) and the rotating frame (2) in sequence, and lead it out through the wire outlet assembly inside the wire outlet arm (4) to the wire outlet end of the wire outlet arm (4); S2. Drive the rotating frame (2) to rotate relative to the connecting rod (1). The wire outlet arm (4) and the counterweight arm (6) rotate synchronously with the rotating frame (2). The wire is continuously fed out from the wire outlet end of the wire outlet arm (4). S3. During the winding process, the counterweight cantilever (6) uses its weight to balance the weight of the lead-out cantilever (4) and the lead-out assembly, so that the mass on both sides of the rotating frame (2) remains balanced.

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