A winding device for a permanent magnet synchronous motor stator

Abstract

This application discloses a stator winding device for a permanent magnet synchronous motor, relating to the field of motor manufacturing equipment technology. The device includes a frame and a winding assembly. The winding assembly, mounted on the frame, includes a fly fork winding assembly, a stator mounting shaft, a positioning plate, a transmission shaft, and a drive assembly. The positioning plate is mounted on the frame and has a guide hole. The stator mounting shaft passes through the frame, with one end slidably fitted into the guide hole. The drive assembly is drively connected to the stator mounting shaft. The front end of the transmission shaft extends above the positioning plate. The fly fork winding assembly is coaxially connected to the front end of the transmission shaft. The fly fork winding assembly includes at least one fly fork arm, and the fly fork arm has an adjustment mechanism for adjusting the moment of inertia and structural stiffness of the fly fork arm according to changes in rotational speed. This application enables the fly fork arm to achieve both rapid response and high-speed stability, improving the winding cycle time and winding quality.

Description

Technical Field

[0001] This invention relates to the field of permanent magnet synchronous motor manufacturing technology, specifically to a stator winding device for a permanent magnet synchronous motor. Background Technology

[0002] Permanent magnet synchronous motors (PMSMs) are widely used in new energy vehicles, servo drives, and industrial automation due to their high efficiency, high power density, and excellent control performance. The stator winding is the core component of a PMSM, and its winding quality directly affects the motor's electrical performance, insulation reliability, and power density. In the manufacturing process of PMSM stators, fly-fork winding is a commonly used method. Fly-fork winding equipment typically includes a frame, a fly-fork winding assembly, a stator mounting shaft, and a drive assembly. The fly-fork winding assembly uses the high-speed rotation of the fly-fork arms to wind enameled wire through the lead nozzles into the stator slots, thus forming the stator winding.

[0003] In the process of developing this application, the applicant discovered at least the following shortcomings in the relevant technology:

[0004] When the fork-type winding machine is working, the fork arm needs to frequently accelerate, decelerate, and change direction. If the fork arm is made too light, it is prone to vibration when rotating at high speed, resulting in unstable wire delivery from the lead tip; if it is made too heavy, the moment of inertia is large, the acceleration and deceleration response is slow, and it affects the winding cycle. Summary of the Invention

[0005] Based on the above-mentioned technical problems, this application provides a stator winding device for permanent magnet synchronous motors, which aims to solve, at least to some extent, the problem of the difficulty in balancing the rotational inertia and structural stiffness of the flying fork arm.

[0006] This invention provides a stator winding device for a permanent magnet synchronous motor, comprising:

[0007] A rack, comprising a cabinet, a first support plate, a second support plate, a front side plate, and a rear side plate, wherein the front side wall of the cabinet is configured as the front side plate, the first support plate is connected to the front side plate and extends outward in a horizontal direction, and the first support plate has a guide hole extending in a front-rear direction; the rear side wall of the cabinet is configured as the rear side plate, and the second support plate is connected to the rear side plate and extends outward in a horizontal direction.

[0008] A winding device is installed on the front side of the cabinet. The winding device includes a fork winding assembly, a stator mounting shaft, a drive shaft, and a drive assembly. The stator mounting shaft extends vertically, and a guide hole is provided on the first support plate. The stator mounting shaft passes through the guide hole and can move forward and backward within the guide hole. The drive assembly is installed below the first support plate and is drively connected to the stator mounting shaft to drive the stator mounting shaft to move along the extension direction of the guide hole and / or rotate around a central axis. The drive shaft extends horizontally and can be controlled to rotate. The drive shaft passes through the front side plate, and its front end extends above the first support plate. The fork winding assembly is coaxially connected to the front end of the drive shaft.

[0009] The flying fork winding assembly includes at least one flying fork arm, and the flying fork arm is provided with an adjustment mechanism. The adjustment mechanism is used to adjust the rotational inertia and structural stiffness of the flying fork arm according to the change of rotational speed when the flying fork arm rotates.

[0010] In some embodiments, the fly fork winding assembly further includes a fly fork connecting plate, a stator center, and a lead-out tube, wherein: the fly fork connecting plate is coaxially and fixedly connected to the front end of the drive shaft; the stator center is fixedly disposed at the center of the fly fork connecting plate; two fly fork arms are fixedly disposed on opposite radial sides of the fly fork connecting plate; the lead-out tube and the fly fork arms are arranged in a one-to-one correspondence; the lead-out tube passes through the corresponding fly fork arm along an axial direction parallel to the fly fork connecting plate; each fly fork arm has an adjustment cavity extending radially along the fly fork connecting plate inside; the adjustment mechanism is slidably disposed in the adjustment cavity along the radial direction of the fly fork connecting plate.

[0011] In some embodiments, the adjustment mechanism includes a damper, a spring, and a mass block. The damper is mounted on the groove wall of the adjustment cavity near the stator center. The protruding end of the damper is fixedly connected to the mass block. The spring is sleeved outside the damper, with one end connected to the mass block and the other end connected to the groove wall of the adjustment cavity near the stator center.

[0012] In some embodiments, a positioning groove is provided on the groove wall of the adjustment cavity on the side away from the stator top center, and an expansion block is provided at the end of the mass block away from the stator top center. The expansion block is used to fit into the positioning groove when the mass block slides away from the stator top center, so as to lock the mass block and the flying fork arm. The opening end of the adjustment cavity is provided with a cover plate, which is removable to facilitate maintenance of the adjustment mechanism.

[0013] In some embodiments, the tightening block is wedge-shaped and is used to convert centrifugal force into radial tightening force as the mass block slides away from the stator center, thereby locking the mass block and the fork arm.

[0014] In some embodiments, the drive assembly includes a mounting platform, a lead screw, a second motor, two guide rods, and a lead screw seat. The lead screw seat is fixed to one side of the bottom surface of the first support plate. One end of each of the two guide rods is fixed to the lead screw seat, and the other end is fixed to the other side of the bottom surface of the first support plate. The mounting platform is slidably sleeved on the two guide rods. The lead screw passes through the mounting platform and is threaded into it. One end of the lead screw is rotatably supported on the lead screw seat, and the other end is rotatably supported on the other side of the bottom surface of the first support plate. The second motor is mounted on the lead screw seat and is drively connected to one end of the lead screw to drive the lead screw to rotate, thereby causing the mounting platform to move linearly along the two guide rods. The stator mounting shaft is rotatably connected to the mounting platform.

[0015] In some implementations, the drive assembly further includes a first pulley, a first motor, and a second pulley. The first pulley is coaxially connected to the stator mounting shaft, the first motor is mounted on the mounting platform, and the second pulley is coaxially connected to the output shaft of the first motor. The first pulley and the second pulley are connected by a drive belt.

[0016] In some embodiments, the stator winding equipment further includes a tension compensation device mounted on the second support plate, wherein the tension compensation device includes a pay-off shaft and a floating assembly, the pay-off shaft is mounted on the extension end of the second support plate, and the floating assembly is mounted on the rear side plate.

[0017] In some embodiments, the floating assembly includes a second mounting plate, a voice coil motor, a slider, a guide rail, and a guide wheel, wherein: the second mounting plate is fixedly connected to the rear side plate, the guide rail is erected on one side of the second mounting plate; the voice coil motor is mounted on the second mounting plate, the movable part of the voice coil motor is fixedly connected to the slider, the slider and the guide rail are slidably connected, and the guide wheel is rotatably connected to the top of the slider.

[0018] In some embodiments, the floating assembly further includes support wheels mounted on both sides of the guide rail and rotatably connected to the second mounting plate.

[0019] This application provides a fork-type winding device that addresses the conflict between lightweight and rigid requirements for the fork arms, and the difficulty in balancing rotational inertia and structural stiffness. It achieves dynamic inertia self-adaptation by incorporating a sliding adjustment mechanism within each fork arm. This adjustment mechanism includes a damper, a spring, a mass block, and a tensioning block. Under centrifugal force, the mass block slides outward along the adjustment cavity, compressing the spring and stretching the damper. During high-speed rotation, the outward movement of the mass block increases rotational inertia, suppressing fork arm vibration and ensuring smooth cable exit from the outlet tube. During acceleration and deceleration, the mass block dynamically returns to its original position under the action of the spring's restoring force and the damper's damping force, reducing the equivalent rotational inertia and improving acceleration response speed and braking efficiency. The tensioning block locks the mass block in place after it reaches its position, allowing the fork arms to simultaneously achieve high-speed stability and acceleration / deceleration agility, improving winding cycle time while maintaining winding accuracy. Attached Figure Description

[0020] Figure 1 A schematic diagram of the structure of a permanent magnet synchronous motor stator winding device according to one or more embodiments of this application is shown;

[0021] Figure 2 A schematic diagram of the winding device is shown;

[0022] Figure 3 It shows Figure 2 A cross-sectional view;

[0023] Figure 4 A schematic diagram of the flying fork winding assembly is shown;

[0024] Figure 5 A schematic diagram of the adjusting mechanism is shown;

[0025] Figure 6 It shows Figure 5 Another perspective;

[0026] Figure 7 A schematic diagram of the drive component is shown;

[0027] Figure 8 A schematic diagram of the tension compensation device is shown.

[0028] Figure 9 A schematic diagram of the floating component is shown;

[0029] Explanation of reference numerals in the attached figures:

[0030] 10. Stator winding equipment;

[0031] 100. Winding device; 110. Flying fork winding assembly; 111. Flying fork connecting plate; 112. Stator center; 113. Flying fork arm; 114. Outlet tube; 115. Adjustment mechanism; 116. Adjustment cavity; 1151. Damper; 1152. Spring; 1153. Mass block; 1154. Tensioning block; 1155. Positioning groove; 120. Stator mounting shaft; 130. Positioning plate; 140. Drive assembly; 141. Mounting platform; 142. First pulley; 143. Second pulley; 144. First motor; 145. Lead screw; 146. Second motor; 147. Guide rod; 148. Lead screw seat; 150. Third pulley; 160. Fourth pulley; 170. First mounting plate; 180. Third motor; 190. Drive shaft;

[0032] 200. Frame; 210. Cabinet; 220. First support plate; 230. Front side panel; 240. Second support plate; 250. Rear side panel; 260. Guide hole;

[0033] 300. Tension compensation device; 310. Pay-off shaft; 320. Floating assembly; 321. Voice coil motor; 322. Slider; 323. Guide rail; 324. Guide wheel; 325. Support wheel; 326. Second mounting plate. Detailed Implementation

[0034] To enable those skilled in the art to more clearly understand this application, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0035] Figure 1 A schematic diagram of the structure of a permanent magnet synchronous motor stator winding device 10 according to one or more embodiments of this application is shown. (In conjunction with...) Figure 1 The stator winding equipment 10 includes a frame 200 and a winding device 100.

[0036] Figure 2 A schematic diagram of the winding device 100 is shown. Figure 3 It shows Figure 2 A cross-sectional view. Combined with... Figures 1 to 3The rack 200 includes a cabinet 210, a first support plate 220, a second support plate 240, a front side plate 230, and a rear side plate 250. The front side wall of the cabinet 210 is configured as the front side plate 230, and the first support plate 220 is connected to the front side plate 230 and extends outward in a horizontal direction. The first support plate 220 has guide holes 260 extending in a front-rear direction. The rear side wall of the cabinet 210 is configured as the rear side plate 250, and the second support plate 240 is connected to the rear side plate 250 and extends outward in a horizontal direction.

[0037] The winding device 100 is mounted on the front side of the cabinet 210. The winding device 100 includes a fork winding assembly 110, a stator mounting shaft 120, a drive shaft 190, and a drive assembly 140. The stator mounting shaft 120 extends vertically, passes through a guide hole 260, and is movable in the front-to-back direction within the guide hole 260. The drive assembly 140 is mounted below the first support plate 220 and is drively connected to the stator mounting shaft 120 to drive the stator mounting shaft 120 to move along the extension direction of the guide hole 260 and / or rotate about its central axis. The drive shaft 190 extends horizontally, is controllably rotatable, passes through the front side plate 230, and its front end extends above the first support plate 220. The fork winding assembly 110 is coaxially connected to the front end of the drive shaft 190.

[0038] In use, the permanent magnet synchronous motor stator winding device 10 provided in this application first places the stator onto the stator mounting shaft 120. After the stator is installed in place, the drive assembly 140 starts, driving the stator mounting shaft 120 to move linearly along the guide hole 260 on the first support plate 220 until the stator and the fly fork winding assembly 110 are connected. At this time, the drive assembly 140 stops linear feed, and the device completes the preparation work before winding. Subsequently, the fly fork winding assembly 110 starts to rotate with the movement of the drive shaft 190, winding the wire into the stator slot. During the winding process, the drive assembly 140 moves again according to the winding rhythm, driving the stator mounting shaft 120 to move linearly and / or rotate, so that the wire can be evenly wound into the stator slot. After winding is completed, the wire between the fly fork winding assembly 110 and the stator is cut. The drive assembly 140 drives the stator mounting shaft 120 back to the initial position, completing the entire winding process.

[0039] The specific details of a permanent magnet synchronous motor stator winding device 10 provided in this application will now be further described with reference to the accompanying drawings.

[0040] Combination Figure 3A drive shaft 190 passes through a first mounting plate 170 located inside the cabinet 210. A third motor 180 is mounted on one side of the first mounting plate 170, and the output shaft of the third motor 180 passes through the first mounting plate 170. A fourth pulley 160 is coaxially mounted on the other side of the first mounting plate 170. A third pulley 150 is coaxially mounted on the drive shaft 190. The third pulley 150 and the fourth pulley 160 are located on the same side and are connected by a transmission belt. The third motor 180 drives the drive shaft 190 to rotate sequentially through the fourth pulley 160, the transmission belt, and the third pulley 150, thereby realizing the rotational movement of the fly fork winding assembly 110 around the axis of the drive shaft 190. It should be noted that an independent pipe is also provided inside the drive shaft 190 to receive the wire and smoothly deliver it to the fly fork winding assembly 110. A positioning plate 130 is also installed on the top of the first support plate 220. The positioning plate 130 has positioning holes corresponding to the guide holes 260 on the first support plate 220 to provide clearance for the linear movement of the stator mounting shaft 120. In some embodiments, the positioning plate 130 can be used to install an arc-shaped guide plate to guide the wire into the stator slot when the fly fork rotates at high speed.

[0041] Figure 4 A schematic diagram of the flying fork winding assembly 110 is shown. (Combined with...) Figure 4 The fly fork winding assembly 110 includes a fly fork connecting plate 111, a stator center 112, two fly fork arms 113, two cable outlet tubes 114, and two adjusting mechanisms 115. The fly fork connecting plate 111 is coaxially and fixedly connected to the front end of the drive shaft 190. When the drive shaft 190 rotates, it drives the fly fork connecting plate 111 to rotate synchronously, thereby driving the entire fly fork winding assembly 110 to rotate around the axis of the drive shaft 190. The stator center 112 is fixed at the center of the fly fork connecting plate 111. The stator center 112 is used to abut against the end of the stator or the end of the stator mounting shaft 120, axially positioning the stator during the winding process, preventing the stator from axially shifting due to force, and ensuring the relative position stability between the stator and the fly fork winding assembly 110. Two fly fork arms 113 are fixed on both radial sides of the fly fork connecting plate 111 to maintain dynamic balance when the fly fork connecting plate 111 rotates, and to form a space inside for wire threading and installation of the adjustment mechanism 115. A cable outlet pipe 114 is provided in a one-to-one correspondence with each fly fork arm 113. The cable outlet pipe 114 passes through the corresponding fly fork arm 113 along an axial direction parallel to the fly fork connecting plate 111. The cable outlet pipe 114 is used to allow the wire to pass through, guiding the wire from one side of the fly fork connecting plate 111 to the wire nozzle at the far end of the fly fork arm 113, ensuring stable wire delivery along a set path even during high-speed rotation of the fly fork arm 113.

[0042] Combination Figure 4Each fork arm 113 has an adjustment cavity 116 extending radially along the fork connecting plate 111. An adjustment mechanism 115 is slidably disposed within the adjustment cavity 116 along the radial direction of the fork connecting plate 111. The adjustment mechanism 115 automatically adjusts the moment of inertia and structural stiffness of the fork arm 113 under centrifugal force according to changes in the fork arm's rotational speed. A cover plate is provided at the opening end of the adjustment cavity 116 to confine the adjustment mechanism 115 within the cavity. The cover plate is also detachable for easy maintenance of the adjustment mechanism 115 within the fork arm 113.

[0043] Figure 5 A schematic diagram of the adjusting mechanism 115 is shown. (Combined with...) Figure 4 and Figure 5 The adjusting mechanism 115 includes a damper 1151, a spring 1152, a mass block 1153, and a tensioning block 1154. The damper 1151 is mounted on the groove wall of the adjusting cavity 116 near the stator center 112, and is used to absorb the vibration energy of the mass block 1153 during its sliding process. The extended end of the damper 1151 is fixedly connected to the mass block 1153, which bears centrifugal force and slides along the adjusting cavity 116 when the fork arm 113 rotates. The spring 1152 is sleeved outside the damper 1151 and is used to push the mass block 1153 back to its initial position when the centrifugal force decreases.

[0044] Figure 6 It shows Figure 5 Another perspective. Combined with Figure 5 and Figure 6 A positioning groove 1155 is provided on the groove wall of the adjusting cavity 116 on the side away from the stator center 112, and a tensioning block 1154 is provided on the end of the mass block 1153 away from the stator center 112. The tensioning block 1154 is used to cooperate with the positioning groove 1155 when the mass block 1153 slides away from the stator center 112, so as to lock the mass block 1153 and the fly fork arm 113. In this embodiment, the tensioning block 1154 is wedge-shaped. When it is embedded in the positioning groove 1155, the centrifugal force generated by the high-speed rotation of the fly fork arm 113 is converted into a radial tensioning force, so that the mass block 1153 and the fly fork arm 113 are firmly connected together. At the same time, the wedge shape can also resist the radial runout of the mass block 1153 to a certain extent, reducing the impact of vibration on the fly fork arm 113.

[0045] It should be noted that when the flying fork arm 113 rotates at high speed and the acceleration of the forced vibration increases to a threshold, the mass block 1153, under the action of inertial force, overcomes the elastic force of the spring 1152 and slides away from the stator center 112. The tension block 1154 is inserted into the positioning groove 1155 and locks the mass block 1153 to the flying fork arm 113, effectively increasing the local stiffness of the flying fork arm 113, suppressing vibration, and stabilizing the wire exit from the lead nozzle. When the vibration decays and the inertial force decreases, the mass block 1153 returns to its original position under the action of the spring 1152, and the tension block 1154 exits the positioning groove 1155 and is unlocked. Thus, the flying fork arm 113 remains lightweight under normal conditions to ensure acceleration and deceleration response, and dynamically increases stiffness during vibration, balancing winding cycle and winding quality.

[0046] Figure 6 A schematic diagram of the drive component 140 is shown. (Combined with...) Figure 6 The drive assembly 140 includes a mounting platform 141, a lead screw 145, a first motor 144, a second motor 146, two guide rods 147, and a lead screw seat 148. The lead screw seat 148 is fixed to one side of the bottom surface of the first support plate 220. One end of each of the two guide rods 147 is fixed to the lead screw seat 148, and the other end is fixed to the other side of the bottom surface of the first support plate 220. The two guide rods 147 are arranged in parallel to provide linear guidance for the mounting platform 141.

[0047] Combination Figure 6 The mounting platform 141 is slidably fitted onto the two guide rods 147. A lead screw 145 passes through the mounting platform 141 and is threadedly engaged with it. One end of the lead screw 145 is rotatably supported on a lead screw seat 148, and the other end is rotatably supported on the other side of the bottom surface of the first support plate 220. A second motor 146 is mounted on the lead screw seat 148 and is drively connected to one end of the lead screw 145. The second motor 146 drives the lead screw 145 to rotate, and through the threaded engagement between the lead screw 145 and the mounting platform 141, it drives the mounting platform 141 to move linearly along the two guide rods 147, thereby achieving axial feed of the stator mounting shaft 120.

[0048] Combination Figure 6 The stator mounting shaft 120 is rotatably connected to the mounting platform 141. A first pulley 142 is coaxially connected to the stator mounting shaft 120. A first motor 144 is mounted at the bottom of the mounting platform 141, and the output shaft of the first motor 144 passes through the mounting platform 141 and is coaxially connected to a second pulley 143 located at the top of the mounting platform 141. The first pulley 142 and the second pulley 143 are connected by a transmission belt. The first motor 144 drives the stator mounting shaft 120 to rotate sequentially through the second pulley 143, the transmission belt, and the first pulley 142, realizing the indexing and rotation of the stator during the winding process.

[0049] It should be noted that the second motor 146 is used to drive the stator mounting shaft 120 to feed axially, and the first motor 144 is used to drive the stator mounting shaft 120 to rotate. The two motors control the axial feed and circumferential rotation respectively, so that the linear movement and rotational motion of the stator mounting shaft 120 are independent of each other, thereby meeting the different action requirements of stator feed and indexing during the winding process, and improving the accuracy of the winding trajectory and the uniformity of winding.

[0050] Figure 7 A schematic diagram of the tension compensation device 300 is shown. (Combined with...) Figure 1 and Figure 7 The stator winding device 10 also includes a tension compensation device 300. The tension compensation device 300 is mounted on the second support plate 240. The tension compensation device 300 includes a pay-off shaft 310 and a floating assembly 320. The pay-off shaft 310 is mounted on the extended end of the second support plate 240, and the floating assembly 320 is mounted on the rear side plate 250. The pay-off shaft 310 is used to wind enameled wire and provide the wire required for winding to the fly fork winding assembly 110. During the winding process, after the wire is released from the pay-off shaft 310, it enters the fly fork winding assembly 110 via the floating assembly 320, and is finally wound into the stator slot by the lead nozzle at the distal end of the fly fork arm 113.

[0051] Figure 8 A schematic diagram of the floating component 320 is shown. (Combined with...) Figure 8 The floating assembly 320 includes a second mounting plate 326, a voice coil motor 321, a slider 322, a guide rail 323, and a guide wheel 324. The second mounting plate 326 is fixedly connected to the rear side plate 250, serving as the mounting base for the floating assembly 320. The guide rail 323 is fixedly connected to the second mounting plate 326, constraining the movement direction of the slider 322. The slider 322 is slidably connected to the guide rail 323, and the guide wheel 324 is mounted on the slider 322, guiding and tensioning the enameled wire. The voice coil motor 321 is mounted on the second mounting plate 326, and the front end of the movable part of the voice coil motor 321 is fixedly connected to the slider 322, driving the slider 322 to float along the guide rail 323, causing the guide wheel 324 to move in real time according to the tension changes of the enameled wire, thereby dynamically compensating for the winding tension and maintaining constant tension. For example, the voice coil motor 321 can be a VCM-25-12 voice coil motor from Shenzhen Deconwell, with a stroke of 12 mm, a peak thrust of 80 N, and a response time in the millisecond range, which can meet the requirements for dynamic compensation of winding tension.

[0052] Combination Figure 8 The floating assembly 320 also includes support wheels 325. The support wheels 325 are mounted on both sides of the guide rail 323, and the mounting part of the support wheels 325 is fixedly connected to the second mounting plate 326 to provide support for the conveying of the wire and prevent the wire from leaving the guide path during the floating process of the guide wheel 324.

[0053] The specific working process of the floating component 320 in this application is as follows: When the winding device 100 is working, the enameled wire is released from the pay-off shaft 310, first passing through the support wheel 325 near the pay-off shaft 310, then passing through the guide wheel 324, and finally entering the fly fork winding assembly 110 via the support wheel 325 near the fly fork winding assembly 110. When the fly fork winding assembly 110 winds the wire smoothly, the voice coil motor 321 drives the slider 322 to remain near the middle position of the guide rail 323, the guide wheel 324 is in a balanced state, and the wire is conveyed with a relatively stable tension.

[0054] When the fly fork winding assembly 110 accelerates the wire pulling, the wire is quickly tightened, increasing the wire tension. At this time, the voice coil motor 321 drives the slider 322 to move downward along the guide rail 323 according to the control signal. The guide wheel 324 moves downward synchronously with the slider 322 and actively feeds out part of the wire, so that the wire feeding speed is matched with the wire pulling speed of the fly fork winding assembly 110, thereby suppressing tension spikes and preventing the wire from being over-tightened or damaged.

[0055] When the fly fork winding assembly 110 decelerates or reverses direction, the wire tends to loosen, and the wire tension decreases. At this time, the voice coil motor 321 drives the slider 322 to move upward along the guide rail 323, and the guide wheel 324 moves upward synchronously with the slider 322 and actively retracts part of the wire, so that the wire feeding speed and the wire pulling speed of the fly fork winding assembly 110 are rematched, thereby preventing the wire from loosening and skipping.

[0056] By adjusting the position of the guide wheel 324 in real time during the winding process, the floating component 320 can actively and quickly compensate for the tension of the wire, so that the wire maintains a relatively stable tension state before entering the flying fork winding component 110, thereby improving the winding quality and stability under high-speed winding conditions.

[0057] The specific models, dimensions, specifications, and manufacturer information listed above are illustrative examples intended to demonstrate one possible implementation of the technical solution of this application, enabling those skilled in the art to understand and implement this application. In practical applications, those skilled in the art can select other technical specifications and commercial products with equivalent functions based on the specific pipe diameter, working pressure range, media type, and other actual operating conditions of the test object; this application does not impose any restrictions in this regard.

[0058] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0059] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", and "counterclockwise" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0060] In this application, unless otherwise expressly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0061] Furthermore, the use of terms such as "first" and "second" in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0062] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A stator winding device (10) for a permanent magnet synchronous motor, characterized in that, include: A rack (200) includes a cabinet (210), a first support plate (220), a second support plate (240), a front side plate (230), and a rear side plate (250). The front side wall of the cabinet (210) is configured as the front side plate (230). The first support plate (220) is connected to the front side plate (230) and extends outward in the horizontal direction. The first support plate (220) has a guide hole (260) extending in the front-back direction. The rear side wall of the cabinet (210) is configured as the rear side plate (250). The second support plate (240) is connected to the rear side plate (250) and extends outward in the horizontal direction. A winding device (100) is installed on the front side of the cabinet (210). The winding device (100) includes a fork winding assembly (110), a stator mounting shaft (120), a drive shaft (190), and a drive assembly (140). The stator mounting shaft (120) extends vertically. A guide hole (260) is provided on the first support plate (220). The stator mounting shaft (120) passes through the guide hole (260) and can move in the front-back direction within the guide hole (260). The drive assembly (140) is installed... Located below the first support plate (220) and connected to the stator mounting shaft (120) for driving the stator mounting shaft (120) to move along the extension direction of the guide hole (260) and / or rotate about the central axis, the drive shaft (190) extends horizontally and can be controlled to rotate, the drive shaft (190) passes through the front side plate (230), and the front end of the drive shaft (190) extends above the first support plate (220), the fly fork winding assembly (110) is coaxially connected to the front end of the drive shaft (190); wherein: The fly fork winding assembly (110) includes at least one fly fork arm (113), and the fly fork arm (113) is provided with an adjustment mechanism (115). The adjustment mechanism (115) is used to adjust the rotational inertia and structural stiffness of the fly fork arm (113) according to the change of rotational speed when the fly fork arm (113) rotates.

2. The permanent magnet synchronous motor stator winding device (10) according to claim 1, characterized in that, The fly fork winding assembly (110) further includes a fly fork connecting plate (111), a stator center (112), and a lead-out tube (114), wherein: The fly fork connecting plate (111) is coaxially and fixedly connected to the front end of the drive shaft (190). The stator center (112) is fixedly disposed at the center of the fly fork connecting plate (111). The two fly fork arms (113) are fixedly disposed on the radial sides of the fly fork connecting plate (111). The cable outlet (114) and the fly fork arms (113) are arranged in a one-to-one correspondence. The cable outlet (114) passes through the corresponding fly fork arm (113) along an axial direction parallel to the fly fork connecting plate (111). Each of the fork arms (113) has an adjustment cavity (116) extending radially along the fork connecting plate (111) inside, and the adjustment mechanism (115) is slidably disposed in the adjustment cavity (116) along the radial direction of the fork connecting plate (111).

3. The permanent magnet synchronous motor stator winding device (10) according to claim 2, characterized in that, The adjustment mechanism (115) includes a damper (1151), a spring (1152), and a mass block (1153). The damper (1151) is installed on the groove wall of the adjustment cavity (116) near the stator center (112). The extended end of the damper (1151) is fixedly connected to the mass block (1153). The spring (1152) is sleeved on the outside of the damper (1151). One end of the spring (1152) is connected to the mass block (1153), and the other end is connected to the groove wall of the adjustment cavity (116) near the stator center (112).

4. The permanent magnet synchronous motor stator winding device (10) according to claim 3, characterized in that, The adjustment cavity (116) has a positioning groove (1155) on the side of the groove away from the stator center (112). The mass block (1153) has an expansion block (1154) at the end away from the stator center (112). The expansion block (1154) is used to be inserted into the positioning groove (1155) when the mass block (1153) slides away from the stator center (112) to lock the mass block (1153) and the flying fork arm (113). The opening end of the adjustment cavity (116) is provided with a cover plate. The cover plate is removable to facilitate maintenance of the adjustment mechanism (115).

5. The permanent magnet synchronous motor stator winding device (10) according to claim 4, characterized in that, The expansion block (1154) is wedge-shaped and is used to convert centrifugal force into radial expansion force when the mass block (1153) slides away from the stator center (112) to lock the mass block (1153) and the flying fork arm (113).

6. A permanent magnet synchronous motor stator winding device (10) according to any one of claims 1-5, characterized in that, The drive assembly (140) includes a mounting platform (141), a lead screw (145), a second motor (146), two guide rods (147), and a lead screw seat (148). The lead screw seat (148) is fixed to one side of the bottom surface of the first support plate (220). One end of each of the two guide rods (147) is fixed to the lead screw seat (148), and the other end is fixed to the other side of the bottom surface of the first support plate (220). The mounting platform (141) is slidably sleeved on the two guide rods (147). The lead screw (145) passes through the mounting platform (141) and is threadedly engaged with the mounting platform (141). One end of the lead screw (145) is rotatably supported on the lead screw seat (148), and the other end is rotatably supported on the other side of the bottom surface of the first support plate (220). The second motor (146) is mounted on the lead screw seat (148) and is connected to one end of the lead screw (145) for driving the lead screw (145) to rotate, so as to drive the mounting platform (141) to move linearly along the two guide rods (147). The stator mounting shaft (120) is rotatably connected to the mounting platform (141).

7. The permanent magnet synchronous motor stator winding device (10) according to claim 6, characterized in that, The drive assembly (140) further includes a first pulley (142), a first motor (144), and a second pulley (143). The first pulley (142) is coaxially connected to the stator mounting shaft (120), the first motor (144) is mounted on the mounting platform (141), and the second pulley (143) is coaxially connected to the output shaft of the first motor (144). The first pulley (142) and the second pulley (143) are connected by a transmission belt.

8. A permanent magnet synchronous motor stator winding device (10) according to any one of claims 1-5, characterized in that, The stator winding equipment further includes a tension compensation device (300), which is mounted on the second support plate (240), wherein: The tension compensation device (300) includes a wire feeding shaft (310) and a floating component (320). The wire feeding shaft (310) is mounted on the extension end of the second support plate (240), and the floating component (320) is mounted on the rear side plate (250).

9. The permanent magnet synchronous motor stator winding device (10) according to claim 8, characterized in that, The floating assembly (320) includes a second mounting plate (326), a voice coil motor (321), a slider (322), a guide rail (323), and a guide wheel (324), wherein: The second mounting plate (326) is fixedly connected to the rear side plate (250), and the guide rail (323) is erected on one side of the second mounting plate (326); The voice coil motor (321) is mounted on the second mounting plate (326). The movable part of the voice coil motor (321) is fixedly connected to the slider (322). The slider (322) and the guide rail (323) are slidably connected. The guide wheel (324) is rotatably connected to the top of the slider (322).

10. The permanent magnet synchronous motor stator winding device (10) according to claim 9, characterized in that, The floating component (320) also includes a support wheel (325), which is mounted on both sides of the guide rail (323) and is rotatably connected to the second mounting plate (326).

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