A rotor automatic assembly device for EPS

Abstract

The application discloses a kind of rotor automatic assembly equipment for EPS, belong to motor rotor assembly technical field, equipment includes feeding mechanism, positioning mechanism and press-fitting mechanism.Feeding mechanism includes steel mandrel and guide rail, magnet is arranged in guide rail, innermost magnet is adsorbed on vertical plane of steel mandrel, and through hole only for innermost magnet to pass downward is equipped between guide rail bottom and vertical plane.Positioning mechanism includes boss and a pair of clamp, boss is positioned with rotor core inner diameter cooperation, clamp clamps rotor core outer side, so that the magnet steel slot on iron core is one-to-one with the magnet on the vertical plane above is aligned.Press-fitting mechanism includes multiple pressure head, and the number and position of pressure head correspond with the magnet on vertical plane, and are driven by lower pressure motor.The application realizes the continuous automatic feeding and synchronous press-fitting of magnet by magnetic force adsorption and mechanical press-fitting, solves the problem of low efficiency of manual assembly, and improves assembly precision and automation degree.

Description

Technical Field

[0001] This invention relates to the field of motor rotor assembly technology, and in particular to an automatic assembly equipment for EPS rotors. Background Technology

[0002] In the field of motor manufacturing, especially in the production process of rotors for EPS (Electric Power Steering) systems, multiple magnets need to be installed into the magnetic slots of the rotor core in a specific polarity sequence. This assembly process requires high precision in the position and polarity of the magnets, as the correct installation of the magnets directly affects the magnetic field distribution and performance output of the motor.

[0003] Currently, the common methods for assembling rotor magnets are manual assembly and semi-automatic mechanical-assisted assembly. In manual assembly, operators need to manually place each magnet into the magnetic slots of the iron core, while ensuring the positive and negative poles are alternately arranged. Because magnets have strong magnetism, adjacent magnets easily attract or repel each other, making it difficult to control the magnet's orientation and placement. This not only results in low assembly efficiency but also easily leads to problems such as magnets being installed backwards, misaligned, or missing. Furthermore, prolonged manual operation can easily cause operator fatigue, further increasing the probability of errors and affecting the consistency of product quality.

[0004] To address the shortcomings of manual assembly, some researchers have developed semi-automated magnet assembly devices. These devices typically use vibratory feeders or hoppers to sort the magnets, and then push them into the magnetic slots of the iron core using pneumatic or mechanical pushers. However, existing devices still have several drawbacks in practical applications. On the one hand, magnets are prone to jamming or stacking due to mutual attraction during transport, leading to unstable feeding. On the other hand, the positioning method for the iron core is often relatively simple, relying solely on a fixed boss or stop, making it difficult to ensure precise alignment of each magnetic slot with the feeding channel. This can easily cause magnets to collide with the slot edges, resulting in damage or improper assembly. Furthermore, the pressing action of existing devices usually requires pressing the magnets fully into the bottom of the slot, resulting in significant pressing force. When there are alignment errors, this rigid pressure can easily damage the magnets or the iron core.

[0005] Therefore, there is a need in this field for an automated assembly equipment that can achieve stable magnet feeding, precise alignment, and gentle pressing to solve these technical problems, improve assembly efficiency and yield, and reduce reliance on operator skills. Summary of the Invention

[0006] This invention overcomes the problems of low efficiency and inaccurate alignment in the existing technology when assembling magnets for EPS rotors. By combining magnetic adsorption with mechanical pressing, it realizes continuous automatic feeding and synchronous pressing of magnets, effectively improving assembly accuracy and automation.

[0007] To achieve the above objectives, the present invention adopts the following solution: An automatic assembly equipment for EPS rotors, comprising: The feeding mechanism includes a steel mandrel and a guide rail for placing magnets. The steel mandrel has several vertical planes evenly arranged around its outer surface. Each vertical plane corresponds to an outwardly extending guide rail. The magnets in the guide rail are arranged in a strip shape with their positive and negative poles connected. The innermost magnet is attracted to the vertical plane. A through hole is provided between the bottom of the guide rail and the vertical plane, allowing only the innermost magnet to pass through downwards. The positioning mechanism includes a boss located below the steel spindle and a pair of clamps on both sides of the boss. The boss is positioned in accordance with the inner diameter of the rotor core. The pair of clamps are positioned on the outer side of the rotor core. The rotor core is evenly provided with multiple magnetic slots along its circumference. The position of the magnetic slots corresponds one-to-one with the position of the magnets attached to the vertical plane above. The pressing mechanism includes several pressing heads arranged above a steel mandrel. The number and position of the pressing heads correspond to the magnets attached to the vertical plane. The pressing heads are driven by a pressing motor to move up and down reciprocally, and the stroke range of the lower end of the pressing head covers the span of the vertical plane.

[0008] Preferably, the outer surface of the rotor core is provided with a longitudinal strip groove, and the clamp is provided with a strip protrusion that fits into the strip groove.

[0009] Preferably, the bottom of the rotor core is provided with a support plate, and a boss is fixedly connected to the center of the top of the support plate. A notch for orientation is provided on one side of the boss. The clamp is set on a slide driven by a motor. The starting end, the middle section and the ending end of the slide are located at the feeding station, the assembly station and the discharge station of the rotor core, respectively.

[0010] Preferably, the diameter of the boss is 0.04 mm smaller than the inner diameter of the rotor core, the lower end opening of the magnet slot is provided with a limiting member to prevent the core from passing through, the lower edge of the magnet is rounded, and the upper end opening of the magnet slot is an open structure for guiding the magnet to slide in.

[0011] Preferably, the feeding mechanism also includes a disc with a steel mandrel positioned at its center and all guide rails arranged radially along the disc's radial direction. A material preparation device is located on the outer side of the disc, comprising a material preparation track, a front deflector assembly, and a rotating assembly. The material preparation track is positioned along the extended diameter of the disc and contains pre-placed spare magnets arranged in a strip. The front deflector assembly includes a slide rail parallel to the material preparation track and a slidably connected deflector. The disc and the material preparation device are driven to rotate relative to each other by the rotating assembly. When the material preparation track aligns with one of the guide rails to be replenished, the deflector, driven by a motor, moves along the slide rail to push the spare magnets in the material preparation track into the aligned guide rail.

[0012] Preferably, the paddle is connected to the slide rail via a slider, and the end of the paddle is wedge-shaped. A rotary motor is provided at the slider, and the paddle is fixed on the horizontal output shaft of the rotary motor. When the paddle rotates to the vertical position, its wedge-shaped end is inserted into the connection gap of the adjacent magnet in the material preparation track.

[0013] Preferably, the material preparation device includes multiple material preparation tracks arranged in groups. Each group of material preparation tracks is provided with a discharge port for docking with the guide rail. The material preparation tracks are driven by servo motors to move relative to the discharge ports. During the movement, the material preparation tracks in the same group match the discharge ports in sequence.

[0014] Preferably, the front derailleur assembly is equipped with a magnetic detection probe for determining the polarity orientation of the magnets in the material preparation track. Each guide rail on the disc is equipped with a polarity label. The built-in controller of the equipment monitors the data of the magnetic detection probe and the polarity labels of the guide rails in real time and determines whether the polarity matches. Only the material preparation track and the guide rail to be replenished are docked and maintained when the polarity orientation of the internal magnets matches the polarity labels.

[0015] Preferably, the top of the steel mandrel is connected to a circular mounting plate, which has mounting holes and through holes for the pressure head to pass through.

[0016] The present invention has at least the following beneficial effects: (1) By using a steel mandrel to adsorb magnets, a double positioning iron core by a boss and a clamp, and a pressure head to press down synchronously and use magnetic force to complete the assembly, the continuous automatic feeding and efficient synchronous pressing of magnets are realized, which significantly improves the assembly efficiency and avoids damage caused by hard pressing, thus ensuring the assembly quality; (2) By using the interlocking positioning of strip grooves and strip protrusions and the multi-station transmission driven by a slide table, the circumferential positioning accuracy and error prevention capability of the rotor iron core are further improved, and the assembly, assembly and discharging of materials are realized in a streamlined operation, which improves the automation level and production cycle of the equipment; (3) By setting a small gap fit between the boss and the inner diameter of the iron core, the rounded corner of the lower end of the magnet, and the open structure of the upper end of the magnetic steel groove, the magnet can be assembled in a more efficient manner. It can automatically find the center, effectively absorb positioning errors, greatly reduce the risk of jamming and collision, and improve the smoothness of assembly and the product qualification rate; (4) Through the cooperation of the disc-type radial guide rail and the material preparation device, as well as the pushing method of inserting the wedge-shaped pawl into the gap of the magnet, automatic material replenishment and reliable pushing are realized, significantly reducing the frequency of manual intervention, ensuring the stability of the equipment for long-term continuous operation, and avoiding the problem of easy slippage when pushing strong magnets; (5) Through the cooperation of multiple sets of material preparation rails and polarity detection probes, automatic identification and selective material replenishment of magnets of different polarities are realized, fundamentally eliminating the error of reverse polarity installation; at the same time, the modular integration of the feeding components is realized through the circular mounting plate, simplifying the equipment assembly and maintenance process, and improving the flexibility and reliability of the equipment. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the device of the present invention; Figure 2 This is a schematic diagram of the pressing mechanism of the present invention; Figure 3 This is a schematic diagram of the feeding mechanism of the present invention; Figure 4 This is a schematic diagram of the steel mandrel structure of the present invention; Figure 5 This is a schematic diagram illustrating the feeding and pressing principle of the present invention; Figure 6 This is a schematic diagram of the positioning mechanism of the present invention; Figure 7 This is a schematic diagram of the material preparation method of the present invention.

[0018] In the diagram: 1. Steel mandrel; 2. Magnet; 3. Guide rail; 4. Boss; 5. Clamp; 6. Rotor core; 7. Magnetic steel groove; 8. Press head; 9. Support plate; 10. Slide table; 11. Disc; 12. Material preparation track; 13. Front derailleur assembly; 14. Magnetic detection probe; 15. Polarity label; 16. Circular mounting plate; 17. Feed conveyor belt; 18. Discharge conveyor belt. Detailed Implementation

[0019] The present invention will now be described in further detail with reference to the accompanying drawings, so that those skilled in the art can implement it based on the description.

[0020] It should be understood that terms such as “having,” “comprising,” and “including” as used herein do not exclude the presence or addition of one or more other elements or combinations thereof.

[0021] It should be noted that, unless otherwise specified, the experimental methods described in the following embodiments are conventional methods, and the materials described are commercially available unless otherwise specified. In the description of this invention, it should be noted that, unless otherwise explicitly stated and limited, the terms "installation," "connection," and "setting" should be interpreted broadly. For example, they can refer to fixed connection or setting, detachable connection or setting, or integral connection or setting. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances. The terms "lateral," "longitudinal," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention and simplifying the description. They 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, and therefore should not be construed as a limitation of this invention.

[0022] like Figure 1-7As shown, the present invention provides an automatic assembly equipment for EPS rotors, comprising: The feeding mechanism includes a steel mandrel 1 and a guide rail 3 for placing magnets 2. The steel mandrel 1 has several vertical planes evenly arranged around its outer side. Each vertical plane corresponds to an outwardly extending guide rail 3. The magnets 2 in the guide rail 3 are arranged in a strip shape with their positive and negative poles connected. The innermost magnet 2 is attracted to the vertical plane. The bottom of the guide rail 3 and the vertical plane are provided with a through hole for the innermost magnet 2 to pass through downward. The positioning mechanism includes a boss 4 located below the steel spindle 1 and a pair of clamps 5 on both sides of the boss 4. The boss 4 is positioned in accordance with the inner diameter of the rotor core 6, and the pair of clamps 5 are positioned on the outer side of the rotor core 6. The rotor core 6 is evenly provided with multiple magnetic grooves 7 along its circumference. The position of the magnetic grooves 7 corresponds one-to-one with the position of the magnet 2 attached to the vertical plane above. The pressing mechanism includes several pressing heads 8 arranged above the steel mandrel 1. The number and position of the pressing heads 8 correspond to the magnets 2 attached to the vertical plane. The pressing heads 8 are driven by a pressing motor to move up and down reciprocally, and the stroke range of the lower end of the pressing head 8 covers the span of the vertical plane.

[0023] The equipment mainly consists of three functional parts: a feeding mechanism, a positioning mechanism, and a pressing mechanism. These three parts are arranged in a corresponding spatial relationship according to their functional execution method and work together in sequence to complete the assembly task of automatically loading the magnets 2 into the magnetic slots 7 of the rotor core 6. The feeding mechanism is used to supply the magnets 2, which are pre-arranged in alternating positive and negative poles, to the top of the assembly station in the correct orientation and position, waiting to be pressed in. The feeding mechanism specifically includes a steel mandrel 1 and several guide rails 3 for placing the magnets 2. The steel mandrel 1 is a vertically placed, magnetic cylindrical part. Its outer surface is machined with several vertical planes along the circumference, each of which is a flat, vertically oriented adsorption working surface. The material of the steel mandrel 1 itself enables it to generate a stable attraction force on the magnets 2. The specific magnitude of the attraction force is designed to be sufficient to attract the magnets 2 onto the vertical planes without them falling off, but not so large as to hinder the subsequent pressing action.

[0024] Each guide rail 3 corresponds to a vertical plane, and the guide rail 3 extends radially outward from the steel mandrel 1 as the center. For example... Figure 3 As shown, the internal channel of the guide rail 3 is used to accommodate the magnets 2. The magnets 2 are arranged horizontally in a continuous strip along the length of the guide rail 3, and adjacent magnets 2 are alternately placed with their positive and negative poles connected, meaning that the magnetic pole directions of all magnets 2 in the same guide rail 3 are consistent. Figure 5As shown, the innermost magnet 2 on the guide rail 3, which is closest to the steel mandrel 1, will directly adhere to and be attracted to the vertical plane of the steel mandrel 1. A through hole is provided at the bottom of the guide rail 3 where it connects to the vertical plane. The size and position of this through hole are designed so that only the innermost magnet 2 can pass downwards, without affecting the structure of the other magnets 2 or the guide rail 3 itself. The through hole provides an exit for the magnet 2 to move vertically downwards, breaking away from the queue.

[0025] The positioning mechanism is used to accurately place the rotor core 6 to be assembled directly below the steel mandrel 1, and to align each magnet slot 7 on the rotor core 6 with the magnet 2 on the vertical plane above. Figure 6 As shown, the positioning mechanism mainly includes a boss 4 and a pair of clamps 5 disposed on both sides of the boss 4. The boss 4 is an upwardly protruding cylindrical part, and its outer diameter is fitted with the inner diameter of the rotor core 6 with a small clearance, so that the boss 4 can be inserted into the central hole of the rotor core 6 to achieve preliminary positioning of the rotor core 6 in the horizontal direction. The pair of clamps 5 are located on the left and right sides or the front and rear sides of the boss 4, respectively. They can move towards each other and clamp the outer cylindrical surface of the rotor core 6 from the outside, thereby completely locking the position of the rotor core 6 in the horizontal direction and preventing it from rotating or shifting during assembly. The rotor core 6 itself is an annular part with a hollow interior and multiple magnetic grooves 7 evenly distributed along the circumference. The openings of these magnetic grooves 7 face the upper end face of the core and are used to receive magnets 2 inserted from above and downward. After the positioning mechanism completes the positioning, the projection position of the magnetic steel groove 7 on the horizontal plane must correspond one-to-one with the position of the magnet 2 adsorbed on the vertical plane of the steel spindle 1 above, that is, the magnet 2 on each vertical plane is exactly aligned with a magnetic steel groove 7.

[0026] The pressing mechanism is used to push the magnets 2, which are attracted to the vertical plane, downwards away from the steel mandrel 1 and the array of magnets 2, and allow them to enter the magnetic slots 7 of the rotor core 6 below. For example... Figure 2 As shown, the pressing mechanism includes several pressing heads 8, which are positioned above the steel mandrel 1. The number of pressing heads 8 is the same as the number of vertical planes on the steel mandrel 1, and the projection position of each pressing head 8 on the horizontal plane coincides with the position of the magnet 2 on the corresponding vertical plane. The pressing heads 8 are driven by a downward pressing motor and can perform reciprocating motion in the vertical direction. The stroke range of the lower end of the pressing head 8 covers the entire vertical span of the vertical plane; that is, the pressing head 8 can move from top to bottom, passing through the upper end of the vertical plane and moving to the lower end, thus ensuring that the magnet 2 attracted to the vertical plane can be completely pushed out. It should be understood that the lower end of the vertical plane is connected to the position of the magnetic groove 7 through a smooth channel to ensure that the magnet 2 maintains vertical movement and enters the magnetic groove 7.

[0027] Example of the equipment's operation: First, the operator or automatic feeding device loads the pre-arranged magnets (2 strips) into each guide rail (3). When the magnets (2) are pushed close to the steel spindle (1), they automatically move inward under the attraction until the innermost magnet (2) is attracted to the vertical plane. Simultaneously, the rotor core (6) to be assembled is sent to the positioning mechanism. The boss (4) passes through the center hole of the core, and the clamps (5) on both sides clamp the core from the outside, aligning the magnetic grooves (7) on the core with the magnets (2) above. Then, the downward motor drives all the pressing heads (8) to move downward synchronously. Each pressing head (8) contacts the upper surface of its corresponding magnet (2) on the vertical plane, overcoming the attraction between the magnet (2) and the steel spindle (1), the attraction between the innermost magnet (2) and its adjacent magnets (2), and the frictional force acting on the magnet (2), pushing the innermost magnet (2) downward. The magnet (2) passes through the through hole between the bottom of the guide rail (3) and the vertical plane, continuing its downward movement. The pressing head 8 does not need to completely press the magnet 2 into the bottom of the magnetic slot 7, but only needs to push the magnet 2 down to a certain critical position. At this critical position, the sum of the attraction of the rotor core 6 below to the magnet 2 and the magnet 2's own weight is enough to counteract the attraction of the steel spindle 1 above to the magnet 2 and the frictional force during movement. At this time, the magnet 2 will automatically continue to move downward under the combined action of gravity and the attraction below, and the final downward speed is relatively large. Finally, the magnet 2 falls completely into and is attracted to the magnetic slot 7. After the pressing head 8 completes the downward stroke, it is driven upward by the pressing motor. When the pressing head 8 completely leaves the area where the vertical plane of the steel spindle 1 is located, the next magnet 2 that was originally next to it in the guide rail 3 will automatically slide inward due to the attraction of the steel spindle 1 and be attracted to the vertical plane, filling the position of the magnet 2 that was previously pressed away, thus completing one automatic loading. After replacing the iron core to be assembled, the pressing operation can be repeated. By repeating this process, all the magnets 2 in one guide rail 3 can be sequentially assembled into the corresponding magnetic slots 7 of the rotor core 6, thus realizing the batch automatic assembly of EPS rotors.

[0028] This technical solution enables continuous automatic feeding and pressing of magnets 2, eliminating the need for manual placement and significantly improving assembly efficiency. Utilizing magnetic adsorption and automatic relay principles, the pressing head 8 only needs to push the magnets 2 past the critical point, reducing the force required for pressing and the precision requirements, while avoiding damage to the magnets 2 or the iron core that might be caused by forced pressing. Through the cooperation of the vertical plane on the steel mandrel 1 with the guide rail 3 and through holes, the magnets 2 can be separated sequentially from the horizontally arranged strips and vertically fed into the product below, resulting in a compact structure and reliable operation. The combination of the boss 4 and the clamp 5 ensures the positional accuracy of the iron core in the horizontal plane and provides circumferential anti-rotation function, ensuring that each magnet 2 can accurately enter the corresponding magnetic slot 7. Multiple pressing heads 8 work synchronously, completing the filling of all magnetic slots 7 on a rotor iron core 6 at once, resulting in a short assembly cycle, high production capacity, and high consistency in the assembly effect of magnets 2.

[0029] In another technical solution, such as Figure 6 As shown, the outer surface of the rotor core 6 is provided with a longitudinal strip-shaped groove, and the fixture 5 is provided with a strip-shaped protrusion that engages with the strip-shaped groove. This strip-shaped groove is a recessed groove running from top to bottom or at least covering a certain length, machined on the outer cylindrical surface of the rotor core 6. It provides a precise fitting feature for subsequent positioning by the fixture 5. The cross-sectional shape of the strip-shaped groove can be rectangular, trapezoidal, or semi-circular, enabling a stable engagement with the protrusion on the fixture 5. Typically, to ensure the reliability and repeatability of positioning, the width and depth of the groove can be designed according to standard tolerances; for example, the width can be between 3-8 mm, and the depth between 1-3 mm. Specific values ​​can be determined based on the dimensions of the rotor core 6 and the actual rotor requirements; these values ​​are only common choices.

[0030] The clamp 5 is equipped with corresponding strip-shaped protrusions that match the strip-shaped grooves. The strip-shaped protrusion is a raised structure on the inner surface of the clamping jaws of the clamp 5, and its shape is complementary to the strip-shaped groove. For example, if the groove is rectangular, the protrusion also has a rectangular cross-section. When the clamp 5 closes from both sides towards the center to clamp the rotor core 6, the strip-shaped protrusion will embed into the strip-shaped groove. This engagement has a self-centering effect; if there is a slight deviation in the circumferential angle of the rotor core 6, the protrusion and the inclined surface or edge of the groove will guide each other, causing the core to rotate slightly until the protrusion completely falls into the groove. Once engaged, the circumferential angle of the rotor core 6 is completely locked, preventing further relative rotation. This is crucial for the subsequent assembly of the magnets 2, as the magnets 2 must be precisely aligned with each magnet slot 7; any circumferential misalignment will prevent the magnets 2 from entering smoothly.

[0031] In actual operation, after the rotor core 6 is delivered to the positioning station, the clamp 5 first opens to a certain width, waiting for the core to be positioned. Then the clamp 5 closes, and the strip-shaped protrusions move towards each other until they encounter the strip-shaped groove and slide into it. At this time, the clamping of the clamp 5 has a certain elastic space because the engagement of the protrusions and grooves has provided sufficient circumferential constraint. The strip-shaped groove is generally machined in one step during the manufacturing process of the rotor core 6, without adding extra process costs. This significantly improves the circumferential positioning accuracy and stability of the rotor core 6 during assembly, effectively preventing misalignment of the magnet 2 caused by the rotation of the core during assembly, and providing a reliable error-proofing mechanism.

[0032] In another technical solution, such as Figure 6 As shown, a support plate 9 is provided at the bottom of the rotor core 6. A boss 4 is fixedly connected to the center of the top of the support plate 9. A notch for orientation is provided on one side of the boss 4. A clamp 5 is set on a motor-driven slide 10. The starting end, middle section, and ending end of the slide 10 are located at the feeding station, assembly station, and unloading station of the rotor core 6, respectively. The support plate 9 is a flat plate part used to support the rotor core 6 from below, keeping it in a stable vertical position during movement and assembly. The shape of the support plate 9 can be circular or square, and its area is usually slightly larger than the outer diameter of the rotor core 6. The upper surface of the support plate 9 is generally flat and mates with the lower end face of the rotor core 6. The boss 4 can be made integral with the support plate 9, and the central axis of the boss 4 coincides with the central axis of the support plate 9. A notch for orientation is provided on one side of the boss 4, which serves as a directional reference mark. Because after the rotor core 6 is fitted onto the boss 4 and placed on the support plate 9, the entire assembly (core, boss 4, support plate 9) may be close to a centrally symmetrical combination, making it difficult to discern from the appearance whether the core's circumferential orientation is correct. However, the orientation of the notch is known and fixed. By detecting the position of the notch using a visual sensor or mechanical probe, the orientation of the support plate 9 and boss 4 can be determined. Furthermore, although the boss 4 and the core can rotate relative to each other, they usually have a certain amount of friction or are engaged through keyways. The angle between the magnetic groove 7 of the core and the notch can be pre-adjusted and fixed. Before or en route to the assembly station, the system can determine whether the support plate 9 needs to be rotated to adjust the core's angle based on the notch's orientation, ensuring that the magnetic groove 7 on the core is aligned with the magnet 2 above.

[0033] The clamp 5 is mounted on a motor-driven slide table 10. The slide table 10 is a platform that can move linearly in the horizontal direction, driven by a motor (such as a servo motor or stepper motor) via a lead screw, synchronous belt, or linear motor. The clamp 5 is mounted on the slide table 10 and moves with it. The stroke of the slide table 10 is divided into three key positions: the starting end, the middle section, and the ending end. These three positions correspond to the feeding station, assembly station, and unloading station of the rotor core 6, respectively. At the feeding station, the support plate 9, along with the rotor core 6 with the boss 4 fitted on it, is placed at the starting end of the slide table 10. At this time, the clamp 5 can be in an open state or not clamped at first. Then the slide table 10 moves, transporting the support plate 9 and the core from the feeding station to the assembly station, i.e., the middle section of the slide table 10. At the assembly station, the clamp 5 actuates, clamping the outer sides of the rotor core 6 from both sides, while the upper pressing mechanism presses the magnet 2 in place. After pressing is completed, the slide table 10 continues to move, conveying the support plate 9 and the assembled rotor core 6 to the discharge station, i.e., the end of the slide table 10, where a robot arm or conveyor belt removes the finished product. Figure 1 As shown, a feeding conveyor belt 17 is provided at the feeding station, continuously transporting the rotor core 6 to be assembled to the feeding station for clamping by the fixture 5. An unloading conveyor belt 18 is provided at the unloading station, promptly removing the rotor core 6 with the magnet 2 assembled from the unloading station and transporting it to the finished product area. The slide table 10 can adopt a double slide table 10 or a circulating slide table 10 structure to allow multiple workpieces to be simultaneously in different stations, improving production efficiency. For example, while one set of components is being press-fitted at the assembly station, another set of components can wait to be loaded at the feeding station, and a third set of components can wait to be unloaded at the unloading station. This scheme achieves automatic and precise transfer of the rotor core 6 between multiple stations, reducing the time spent on manual handling and repetitive positioning, and improving production cycle time.

[0034] In another technical solution, the diameter of the boss 4 is 0.04 mm smaller than the inner diameter of the rotor core 6. The lower opening of the magnet slot 7 is equipped with a limiting component to prevent the core from passing through. The lower edge of the magnet 2 is rounded, and the upper opening of the magnet slot 7 is an open structure to guide the magnet 2 into place. A small clearance fit is used between the diameter of the boss 4 and the inner diameter of the rotor core 6; one possible fit difference is approximately 0.04 mm. That is, the outer diameter of the boss 4 is about 0.04 mm smaller than the inner diameter of the rotor core 6. This value is not fixed and can be adjusted in practical applications based on the size and material of the rotor core 6, the manufacturing precision of the boss 4, and assembly requirements. Specifically, when the boss 4 is inserted into the inner hole of the core, the core is not completely rigidly fixed but can float slightly in the horizontal direction relative to the boss 4. When the upper magnet 2 is pushed down by the pressure head 8 and approaches the opening of the magnetic steel groove 7, if there is a slight deviation between the centerline of magnet 2 and the centerline of magnetic steel groove 7 (e.g., due to installation error of guide rail 3 or manufacturing tolerance of the iron core itself), the rounded corner of the lower edge of magnet 2 will first contact the chamfer or open structure of the opening of magnetic steel groove 7, guiding magnet 2 to slide smoothly into magnetic steel groove 7. The floating fit design avoids jamming or collision due to positioning error. A limit component is provided at the lower opening of magnetic steel groove 7. The limit component can be a horizontal baffle, a raised step, or an independent part installed at the bottom of magnetic steel groove 7 to prevent magnet 2 from passing through magnetic steel groove 7 and falling out from the lower end of the iron core during the pressing process. In order to be assembled in place, magnet 2 will still have a certain speed after fully entering magnetic steel groove 7 and may continue to move downward. Without the limit component, magnet 2 may pass through the appropriate installation position of magnetic steel groove 7 or even fall off. When the lower end of magnet 2 contacts the limit component, magnet 2 stops at the correct depth position. The limiting components can be made of non-magnetic materials and are distributed at the corners of the lower opening of the magnet groove 7.

[0035] The lower edge of magnet 2 is rounded, with a radius between 0.2 and 0.5 mm, depending on the size and strength of magnet 2. The rounded corner reduces contact stress between magnet 2 and the opening edge of the magnetic groove 7, and provides a guiding slope. The upper opening of the magnetic groove 7 is an open structure, specifically an outwardly widening trumpet or chamfered shape, meaning the width or diameter of the opening is greater than the internal width of the magnetic groove 7, and the opening depth can be between 1 and 3 mm. When magnet 2 moves downwards, even if the centerline of magnet 2 does not perfectly coincide with the centerline of the magnetic groove 7, the lower rounded corner of magnet 2 will first contact the slope of the opening. The slope guides magnet 2 to slide towards the center, gradually correcting the deviation and allowing magnet 2 to smoothly enter the straight wall portion of the magnetic groove 7. During the actual pressing process, when the press head 8 pushes magnet 2 down to near the entrance of the magnetic groove 7, magnet 2 is attracted by the iron core below and begins to fall on its own. During the descent, if there is a misalignment, the opening and rounded corners will guide magnet 2 to automatically center itself. At the same time, the iron core will automatically adjust its position through the floating gap. Finally, magnet 2 will fall smoothly into the bottom of the slot and be blocked by the limiting component, which significantly improves the smoothness and success rate of magnet 2 assembly. Even with certain manufacturing and assembly tolerances, magnet 2 can automatically align itself and enter the magnetic steel slot 7, reducing the risk of jamming, tilting or collision damage. The tiny gap between the boss 4 and the iron core enables flexible positioning, avoiding assembly difficulties caused by over-positioning. The limiting component ensures the consistency of the final installation depth of magnet 2.

[0036] In another technical solution, such as Figure 2 and Figure 7 As shown, the feeding mechanism also includes a disc 11, with a steel spindle 1 positioned at the center of the disc 11. All guide rails 3 are arranged radially along the radial direction of the disc 11. A material preparation device is provided on the outer side of the disc 11. The material preparation device includes a material preparation track 12, a front deflector assembly 13, and a rotating assembly. The material preparation track 12 is located on the diameter extension line of the disc 11, and spare magnets 2 arranged in a strip are pre-placed inside the material preparation track 12. The front deflector assembly 13 includes a slide rail parallel to the material preparation track 12 and a deflector slidably connected therein. The disc 11 and the material preparation device are driven to rotate relative to each other by the rotating assembly. When the material preparation track 12 is connected to one of the guide rails 3 to be replenished, the deflector is driven by a motor to move along the slide rail and push the spare magnets 2 in the material preparation track 12 into the connected guide rail 3.

[0037] In addition to the steel mandrel 1 and guide rails 3 mentioned above, the feeding mechanism further includes a disc 11. The disc 11 is a rotatable circular platform, placed horizontally. The steel mandrel 1 is located at the center of the disc 11 and is coaxial with it. All guide rails 3 are mounted on the disc 11 (possibly in an inlay configuration) and extend radially outwards along the disc 11, arranged evenly in a radial pattern. The inner end of each guide rail 3 is close to the steel mandrel 1, and the outer end extends to the edge of the disc 11. This radial layout facilitates the alignment of the different guide rails 3 on the disc 11 with a fixed preparation device. The preparation device is a separate module used to store spare magnets 2 and automatically replenish magnets 2 to the guide rails 3 on the disc 11 when needed. The preparation track 12 is a straight channel with the same internal cross-sectional shape as the guide rails 3 on the disc 11, capable of accommodating spare magnets 2 arranged in strips with alternating positive and negative poles. The material preparation track 12 is set on the diameter extension line of the disk 11. That is, the center line of the material preparation track 12 coincides with a radial line of the disk 11 (or it can be adjusted to coincide). In this way, when the disk 11 and the material preparation device rotate relative to each other to a certain angle, a certain guide rail 3 on the disk 11 is exactly aligned with the material preparation track 12 to form a straight line, thus forming a continuous magnet 2 channel.

[0038] Spare magnets 2 are pre-filled in the material preparation track 12. The number of magnets 2 can be set as needed. In principle, the length of the arrangement of magnets 2 in each material preparation track 12 is less than the length of the guide rail 3, and magnets 2 in the guide rail 3 are only replenished when the number of magnets 2 in the guide rail 3 falls below a certain amount, so as to ensure that the length of the magnets 2 in the guide rail 3 after replenishment does not exceed the edge of the disc 11. The front derailleur assembly 13 includes a slide rail and a derailleur. The slide rail is next to the material preparation track 12 and its direction is parallel to the material preparation track 12. The derailleur is mounted on the slide rail by a sliding connection and can make linear reciprocating motion along the slide rail to push the spare magnets 2. The rotating assembly is used to drive the disc 11 and the material preparation device to generate relative rotation. Specifically, the rotating assembly can be a motor that drives the disc 11 to rotate while the material preparation device is fixed; or the disc 11 can be fixed and the material preparation device can rotate around the disc 11; or both can rotate. The rotating assembly can precisely control the rotation angle so that any guide rail 3 on the disc 11 can reach the position of docking with the material preparation track 12. When the system detects that the number of magnets 2 in a certain guide rail 3 on the disk 11 is insufficient (for example, by monitoring the presence of magnets 2 at the end of guide rail 3 via a sensor), the controller issues a replenishment command. The rotating component drives the disk 11 or the replenishment device to rotate until the guide rail 3 to be replenished is precisely aligned with the replenishment track 12, their channel center lines coincide, and the docking point is smoothly transitioned. Then, the paddle of the front paddle assembly 13, driven by the motor, moves along the slide rail towards the replenishment track 12. The paddle starts pushing the spare magnets 2 from the rear end of the replenishment track 12 (the end away from the disk 11), causing the entire line of spare magnets 2 to move towards the disk 11. As the paddle advances, the spare magnets 2 cross the docking point and enter the interior of the guide rail 3 on the disk 11, eventually replenishing the entire line of spare magnets 2 in the guide rail 3. After the paddle is pushed into place, it can then retreat to its original position, waiting for the next replenishment.

[0039] In actual operation, the material preparation device can be equipped with multiple material preparation tracks 12, such as multiple material preparation tracks 12 arranged around the outer side of the disc 11, each corresponding to a magnet 2 of different polarities. The rotating component can rotate not only the disc 11 but also the material preparation device to achieve selective docking of many to many. To ensure a smooth material replenishment process, the gap between the material preparation track 12 and the guide rail 3 should be as small as possible to prevent the magnet 2 from getting stuck. The trigger threshold for material replenishment can be set to start replenishment when the number of remaining magnets 2 in the guide rail 3 is less than 5 pieces. The specific threshold can be adjusted according to the production cycle and material preparation distance of the equipment. Generally, the initial number of magnets 2 in each guide rail 3 is the same, and the reduction of the number of magnets 2 in each guide rail 3 during assembly is synchronous. Therefore, when one guide rail 3 is short of material, all guide rails 3 are generally short of material simultaneously. Thus, one replenishment process will cycle through all guide rails 3 to replenish material in sequence, and the number of magnets 2 in each guide rail 3 will remain consistent after replenishment. This solution enables automatic replenishment of magnet 2, significantly reducing the frequency of manual intervention. It only requires periodically adding spare magnet 2 to the material preparation track 12. The relative rotation design between the disc 11 and the material preparation device allows a single material preparation device to serve all guide rails 3, resulting in a compact structure. The front push assembly 13 achieves smooth linear pushing through the slide rail and pusher. The entire replenishment process can be automatically judged and completed by sensors and controllers, improving the automation level and continuous operation capability of the equipment.

[0040] The paddle is connected to the slide rail via a slider, and its end is wedge-shaped. A rotary motor is installed at the slider, and the paddle is fixed to the horizontal output shaft of the rotary motor. When the paddle rotates to a vertical position, its wedge-shaped end inserts into the connection gap between adjacent magnets 2 in the material preparation track 12. The slider is a component that can slide freely on the slide rail. The paddle is mounted on the slider, and the slider is driven by a motor (such as a servo motor or linear motor) to move along the slide rail. The end of the paddle is machined into a wedge shape, similar to a knife tip or a triangle. The tip angle of the wedge can be designed between 15 and 30 degrees, for example, 20 degrees. This angle allows it to be inserted into narrow gaps while having sufficient strength to prevent breakage. A rotary motor is also installed at the slider. The output shaft of the rotary motor is horizontal, and the paddle is fixed to this horizontal output shaft. When the rotary motor rotates, the paddle can switch between a horizontal and a vertical position, or stop at any intermediate angle. When magnet 2 needs to be pushed, the rotary motor rotates the paddle to a vertical position, meaning the paddle is perpendicular to the material preparation track 12 with its wedge-shaped end pointing downwards. At this point, the paddle extends into the material preparation track 12 directly above it. Since the magnets 2 in the material preparation track 12 are arranged sequentially, although adjacent magnets 2 are in close contact, a small gap naturally forms between them due to the chamfered or rounded edges of the magnets 2, creating an uneven surface. The tip of the wedge-shaped end doesn't necessarily need to be thinner than this gap; its key is to hook into this recessed gap. After the paddle rotates to a vertical position, the slider is moved to align the wedge-shaped end with the target gap, and then slightly pushed forward, allowing the wedge tip to insert into the connecting gap between two adjacent magnets 2. Once inserted, the paddle forms stable contact with the entire magnet group 2. The slider continues to move forward, and the paddle reliably pushes the entire magnet group 2 forward without slipping or detaching from the magnet 2 surface.

[0041] After the push is complete, the rotary motor rotates the paddle back to a horizontal position, disengaging it from the gap of magnet 2. Then, the slider moves the paddle back to its original position, ready for the next push. This wedge-shaped paddle design is particularly suitable for pushing magnet 2 because the insertion method utilizes the chamfered feature of magnet 2 itself. In practical use, magnet 2 has a relatively standard height; as long as the height of the lower end of the paddle is adjusted correctly when it is vertical, it can be ensured that it can be accurately inserted into the gap each time (or inserted after a few pushes). The wedge-shaped end can be coated or polished. This design significantly improves the reliability and stability of the paddle when pushing magnet 2. Even with small gaps between magnet 2, the wedge-shaped end inserting into the gap ensures that power transmission does not slip. The rotary motor and slider work together to enable flexible switching between the paddle's non-working and working states, preventing the paddle from causing magnet 2 to move backward when it retracts. Of course, there is no backward movement problem when the paddle directly pushes the outer end of the magnet 2 array. However, due to the rotation method of the paddle, it can hook into the gap between any two magnets 2, pushing and releasing multiple times, thereby shortening the slide rail length and the maximum stroke of the paddle, making it more versatile and the overall structure of the device more compact. Utilizing the chamfered gaps of magnet 2 itself as the force point, no additional modifications to magnet 2 are required, making it highly versatile. The structure is simple and compact, easy to maintain, and can adapt to long-term, high-frequency automatic replenishment operations.

[0042] The material preparation device includes multiple grouped material preparation tracks 12. Each group of material preparation tracks 12 has a corresponding outlet for docking with the guide rail 3. The material preparation tracks 12 are driven by servo motors to move relative to the outlets. During the movement, the material preparation tracks 12 in the same group sequentially match the outlets. In the case of grouped configuration, these material preparation tracks 12 are divided into several groups according to a certain quantity. For example, each group can contain multiple material preparation tracks 12, generally set to two groups, one for primary use and the other for backup. Each group of material preparation tracks 12 has a corresponding outlet. The outlet is a fixed interface located on the side of the material preparation device near the disc 11. The material preparation tracks 12 selectively dock with the guide rail 3 through this common outlet. The inner channel shape of the outlet is consistent with the material preparation tracks 12 and the guide rail 3 on the disc 11, ensuring that the magnet 2 can pass through smoothly. Each material preparation track 12 can be moved to the position of the outlet under drive and communicate with the outlet. The material preparation tracks 12 are driven by servo motors and move relative to the outlets. There are several ways to achieve relative motion. For example, the material preparation track 12 is mounted on a movable platform, and a servo motor drives the platform to perform horizontal translational movement, so that different material preparation tracks 12 in the same group are sequentially aligned with the discharge port. The servo motor can precisely control the position, ensuring the repeatability of positioning accuracy when each material preparation track 12 is docked with the discharge port. During the movement, the material preparation tracks 12 in the same group are matched with the discharge port sequentially. Sequential matching means that at any given time, only one material preparation track 12 is connected to the discharge port, while the other material preparation tracks 12 are in a waiting position. When it is necessary to retrieve a magnet 2 from a certain material preparation track 12, the servo motor drives the group of material preparation tracks 12 to move, aligning the target track with the discharge port, and then the front pusher component 13 pushes it. After pushing is completed, if it is necessary to replace another material preparation track 12 in the same group, the servo motor drives it again, moving the next track to the discharge port position. This design addresses the polarity matching issue of the magnets 2. Different guide rails 3 on the disk 11 have different requirements for the polarity orientation of the magnets 2 (e.g., some guide rails 3 require the N pole to face the center, while others require the S pole to face the center), whereas the polarity orientation of the magnets 2 stored in the preparation track 12 is fixed (inward or outward). By setting up multiple preparation tracks 12 to store magnets 2 with different polarity orientations, when replenishment is needed, the preparation track 12 that matches the polarity requirement of the target guide rail 3 can be selected for docking. For example, suppose there are 12 guide rails 3 on the disk 11, requiring the N pole to face inward and the S pole to face inward in an alternating sequence. For instance, one set of multiple preparation tracks 12 in the preparation device may include two preparation tracks 12, one storing two magnets with the N pole facing inward and the other storing two magnets with the S pole facing inward.When rail 1 (requiring N-pole to face inwards) is short of material, the servo motor drives the reserve rail 12 (containing N-pole to face inwards) to align with the outlet, and then replenishes the material. When rail 2 (requiring S-pole to face inwards) is short of material, the servo motor drives the reserve rail 12 (containing S-pole to face inwards) to align with the outlet. In this way, one set of reserve rails 12 can serve multiple rails 3 requiring different polarities, or even replenish all rails 3. In actual operation, to further improve efficiency, multiple sets of reserve rails 12 can be set, each set corresponding to one outlet. Multiple outlets can be distributed at different angles around the disk 11, simultaneously replenishing different areas of rail 3. Generally, the initial number of magnets 2 in rails 3 is consistent and decreases synchronously, so replenishment is also synchronous. However, for cases where the initial numbers are inconsistent, the replenishment order can be prioritized by the controller based on the degree of material shortage in each rail 3, prioritizing replenishment for the rail 3 with the most severe shortage. This solution achieves automatic differentiation and on-demand supply of magnets 2 with different polarities through multi-track material preparation and selective docking, meeting the requirement of alternating polarities of magnets 2 during rotor assembly; a set of material preparation tracks 12 share a single discharge port, simplifying the structure of the material preparation device and the pairing control logic; the equipment can operate continuously for a long time, improving the automation level and production efficiency of the equipment.

[0043] The front derailleur assembly 13 is equipped with a magnetic detection probe 14 for determining the polarity orientation of the magnets 2 within the material preparation track 12. Each guide rail 3 on the disc 11 is equipped with a polarity label 15. The built-in controller monitors the data from the magnetic detection probe 14 and the polarity labels 15 of the guide rails 3 in real time and determines whether the polarities match. Only the material preparation track 12 and the guide rail 3 to be replenished whose internal magnet 2 polarity orientation matches the polarity label 15 are docked and maintained. The magnetic detection probe 14 is a sensor that can sense the polarity orientation of the magnets 2 by detecting the magnetic field distribution at its location, such as a Hall sensor or a magnetoresistive sensor. It is installed on the front derailleur assembly 13 near the outlet of the material preparation track 12, or on the side of the material preparation track 12. It can detect the polarity direction of the magnets 2 in the material preparation track 12 before or during the pushing process. That is, the magnetic detection probe 14 can detect which end of the magnet 2 is the N pole and which end is the S pole, thereby determining whether the polarity orientation of the entire magnet 2 is as expected. Each guide rail 3 on the disk 11 is equipped with a polarity label 15. The polarity label 15 is a data identifier stored in the device controller, or an electronic tag (such as RFID) fixed near the guide rail 3, used to indicate the required polarity orientation of the magnet 2 for that guide rail 3. For example, the polarity label 15 for guide rail 1 could be "N pole towards the center," while for guide rail 2 it would be "S pole towards the center." The polarity label 15 is predetermined based on the magnetic pole arrangement requirements of the rotor core 6.

[0044] The built-in controller monitors and compares the data from the magnetic detection probe 14 and the polarity label 15 of the guide rail 3 in real time. The controller is typically a PLC or other integrated industrial processor system. One of its functions is to receive signals from the magnetic detection probe 14 and simultaneously read the polarity label 15 of the target guide rail 3 that needs replenishment. The controller determines whether the polarity orientation of the magnet 2 in the preparation track 12, as measured by the magnetic detection probe 14, matches the polarity label 15 of the target guide rail 3. If they match, for example, if the N pole of the magnet 2 in the preparation track 12 faces the center, and the target guide rail 3 also requires the N pole to face the center, the controller allows the docking and replenishment operation to continue. If they do not match, the controller will refuse docking of the preparation track 12 with the target guide rail 3. Furthermore, the controller can control the servo motor to switch to other preparation tracks 12 in the same group, attempting to find a track with matching polarity. In practice, the magnetic detection probe 14 can perform the detection when the magnet 2 is loaded into the preparation track 12 and record the results, which can then be directly retrieved during subsequent replenishment. Alternatively, before each docking, the probe performs real-time detection on the first magnet 2 in the preparation track 12 currently aligned with the discharge port. The detection threshold can be the strength or direction of the magnetic field. For example, the probe outputs a voltage value, with positive and negative values ​​representing polarity and the absolute value representing strength. The controller sets a strength threshold (e.g., above 100 Gauss is a valid signal). Only when the detected strength exceeds this threshold is the presence of magnet 2 considered and its polarity determined. This threshold can be adjusted according to the actual magnetic field strength of the magnet 2 used. For the polarity label 15, the controller can maintain a table recording the number of each guide rail 3 and its corresponding polarity requirement. When the disk 11 rotates and a guide rail 3 reaches the replenishment position, the controller looks up its polarity label 15 according to the guide rail 3 number and compares it with the detected polarity. If they match, the controller sends an allow signal to the servo motor and the paddle drive motor to perform replenishment; if they do not match, the controller can issue a command to rotate the disk 11 by an angle to try docking with other guide rails 3, or pause the equipment and prompt the operator to check the direction of the magnet 2 in the preparation track 12. This solution enables automatic detection and error prevention of the polarity of magnet 2, fundamentally eliminating rotor assembly quality accidents caused by reversed polarity of magnet 2; the real-time monitoring and comparison mechanism enables the equipment to have self-diagnostic capabilities, allowing intervention before errors occur; the polarity label 15, combined with the controller, allows for flexible configuration of the polarity requirements of different guide rails 3, adapting to the production needs of different rotor models; this solution improves the intelligence level of the equipment, reduces the skill requirements of operators, and makes the production process more reliable and stable.

[0045] In another technical solution, such as Figure 4 and Figure 5As shown, a circular mounting plate 16 is connected to the top of the steel mandrel 1. The circular mounting plate 16 has mounting holes and through holes for the pressure head 8 to pass through. The circular mounting plate 16 is a disc-shaped part, which can be made of non-magnetic material and has sufficient strength and rigidity. Its lower surface is fixedly connected to the upper end face of the steel mandrel 1. The function of the circular mounting plate 16 is to integrate the steel mandrel 1 and related parts such as the guide rail 3 and the pressure head 8 guide into a modular assembly, which is convenient for overall installation onto the main frame of the equipment. The mounting holes on the circular mounting plate 16 are circular holes or threaded holes that penetrate the circular mounting plate 16, used to insert bolts or screws to fix the entire assembly to the bracket or crossbeam of the equipment. The circular mounting plate 16 also has through holes for the pressure head 8 to pass through. The position and number of through holes correspond to the vertical plane on the steel mandrel 1 and the layout of the pressure head 8. Since the pressure head 8 needs to move downwards and pass through the circular mounting plate 16 to contact the magnet 2 on the vertical plane of the steel mandrel 1, clearance space must be reserved on the circular mounting plate 16. The diameter of the through hole is slightly larger than the diameter of the pressure head 8. The through hole can be designed as multiple independent holes equal to the number of pressure heads 8, or as a large fan-shaped or annular groove for multiple pressure heads 8 to pass through simultaneously. In specific equipment, the circular mounting plate 16 can also serve as a mounting base for other parts. For example, the guide sleeve of the pressure head 8 can be fixed to the upper surface of the circular mounting plate 16, and the support frame of the guide rail 3 can also be connected to the circular mounting plate 16. In this way, the entire feeding head part can be installed as an independent sub-assembly during equipment assembly, facilitating disassembly and maintenance. In the actual equipment assembly process, the steel mandrel 1 is first fixed to the center of the circular mounting plate 16. Then, each guide rail 3 is installed on the disc 11 (the disc 11 itself may be set separately, and the guide rail 3 may also be an integrated structure pre-embedded in the disc 11). Next, the drive mechanism and guide mechanism of the pressure head 8 are installed above the circular mounting plate 16. Finally, the entire assembly is bolted to the equipment bracket or column through the mounting holes. Since the form of the equipment bracket is not a key point of this application, its shape and style have many conventional designs and can be freely selected.

[0046] The number of devices and processing scale described herein are for the purpose of simplifying the description of the invention. Applications, modifications, and variations of the invention will be readily apparent to those skilled in the art.

[0047] Although embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the specification and embodiments. They can be applied to various fields suitable for the present invention. For those skilled in the art, other modifications can be easily made. Therefore, without departing from the general concept defined by the claims and their equivalents, the present invention is not limited to the specific details and illustrations shown and described herein.

Claims

1. An automatic assembly equipment for EPS rotors, characterized in that, include: The feeding mechanism includes a steel mandrel and a guide rail for placing magnets. The steel mandrel has several vertical planes evenly arranged around its outer surface. Each vertical plane corresponds to an outwardly extending guide rail. The magnets in the guide rail are arranged in a strip shape with their positive and negative poles connected. The innermost magnet is attracted to the vertical plane. A through hole is provided between the bottom of the guide rail and the vertical plane, allowing only the innermost magnet to pass through downwards. The positioning mechanism includes a boss located below the steel spindle and a pair of clamps on both sides of the boss. The boss is positioned in accordance with the inner diameter of the rotor core. The pair of clamps are positioned on the outer side of the rotor core. The rotor core is evenly provided with multiple magnetic slots along its circumference. The position of the magnetic slots corresponds one-to-one with the position of the magnets attached to the vertical plane above. The pressing mechanism includes several pressing heads arranged above a steel mandrel. The number and position of the pressing heads correspond to the magnets attached to the vertical plane. The pressing heads are driven by a pressing motor to move up and down reciprocally, and the stroke range of the lower end of the pressing head covers the span of the vertical plane.

2. The automatic assembly equipment for EPS rotors according to claim 1, characterized in that, The outer surface of the rotor core is provided with longitudinal strip grooves, and the clamp is provided with strip protrusions that fit into the strip grooves.

3. The automatic assembly equipment for EPS rotors according to claim 1, characterized in that, The bottom of the rotor core is provided with a support plate, and a boss is fixedly connected to the center of the top of the support plate. A notch for orientation is provided on one side of the boss. The clamp is set on a slide driven by a motor. The starting end, middle section and ending end of the slide are located at the feeding station, assembly station and discharge station of the rotor core, respectively.

4. The automatic assembly equipment for EPS rotors according to claim 1, characterized in that, The diameter of the boss is 0.04 mm smaller than the inner diameter of the rotor core. The lower opening of the magnet slot is equipped with a limiting device to prevent the core from passing through. The lower edge of the magnet is rounded. The upper opening of the magnet slot is an open structure to guide the magnet to slide in.

5. An automatic assembly equipment for EPS rotors according to claim 1, characterized in that, The feeding mechanism also includes a disc with a steel mandrel at its center and all guide rails arranged radially along the disc. A material preparation device is located on the outside of the disc, which includes a material preparation track, a front deflector assembly, and a rotating assembly. The material preparation track is located on the extended diameter line of the disc and contains pre-placed spare magnets arranged in a strip. The front deflector assembly includes a slide rail parallel to the material preparation track and a deflector slidably connected therein. The disc and the material preparation device are driven to rotate relative to each other by the rotating assembly. When the material preparation track aligns with one of the guide rails to be replenished, the deflector is driven by a motor to move along the slide rail and push the spare magnets in the material preparation track into the aligned guide rail.

6. An automatic assembly equipment for EPS rotors according to claim 5, characterized in that, The paddle is connected to the slide rail via a slider, and the end of the paddle is wedge-shaped. A rotary motor is installed at the slider, and the paddle is fixed on the horizontal output shaft of the rotary motor. When the paddle rotates to the vertical position, its wedge-shaped end is inserted into the connection gap between adjacent magnets in the material preparation track.

7. An automatic assembly equipment for EPS rotors according to claim 5, characterized in that, The material preparation device includes multiple material preparation tracks arranged in groups. Each group of material preparation tracks is equipped with a corresponding discharge port for docking with the guide rail. The material preparation tracks are driven by servo motors to move relative to the discharge ports. During the movement, the material preparation tracks in the same group match the discharge ports in sequence.

8. An automatic assembly equipment for EPS rotors according to claim 7, characterized in that, The front derailleur assembly is equipped with a magnetic detection probe to determine the polarity orientation of the magnets in the material preparation track. Each guide rail on the disc is equipped with a polarity label. The built-in controller monitors the data from the magnetic detection probe and the polarity labels on the guide rails in real time and determines whether the polarity matches. Only the material preparation track and the guide rail to be replenished are docked and maintained when the polarity orientation of the internal magnets matches the polarity label.

9. An automatic assembly equipment for EPS rotors according to claim 1, characterized in that, The top of the steel mandrel is connected to a circular mounting plate, which has mounting holes and through holes for the pressure head to pass through.

Images