Permanent magnet rotor magnetic steel separation device and separation method

Abstract

The application relates to a magnetic steel separation device and method for a permanent magnet rotor, and relates to the technical field of magnetic steel separation for permanent magnet rotors. The device comprises a supporting table, a limiting baffle, a movable baffle and a pushing assembly. The limiting baffle is fixedly arranged on the supporting table, the movable baffle is movably arranged relative to the limiting baffle, a placing space is formed between the movable baffle and the limiting baffle, a through groove is reserved between the bottom of the movable baffle and the limiting baffle and the supporting table. The pushing assembly comprises a pushing plate, a driving assembly connected with the pushing plate and used for driving the pushing plate to push out the lowermost magnetic steel sheet. Two clamping assemblies are symmetrically arranged on the side wall of the movable baffle facing the limiting baffle along the pushing direction. The clamping assembly comprises an eccentric roller arranged across the stacked magnetic steel, a supporting frame and a driving motor. A position sensor is arranged below the movable baffle. In the application, the controllable clamping of the two eccentric rollers can ensure automatic feeding of the magnetic steel sheets and avoid abrasion of the magnetic steel sheets during the return stroke of the pushing plate.

Description

Technical Field

[0001] This invention relates to the field of permanent magnet rotor magnet separation technology, and in particular to a permanent magnet rotor magnet separation device and separation method. Background Technology

[0002] In the manufacturing of permanent magnet stepper motors, the assembly of the permanent magnet rotor is a core step that determines the motor's performance. The process typically involves adhesively bonding magnet sheets to the surface of the rotor core, forming a permanent magnet structure with a specific magnetic field distribution. To improve assembly efficiency, a magnet separation device is needed during the magnet bonding process to separate the stacked magnet sheets one by one for easy handling and assembly.

[0003] Existing magnet separation devices require that stacked magnet sheets be arranged neatly by hand or special sorting equipment before being placed into the separation chamber of the separation device. The bottom of the separation chamber is equipped with a reciprocating push plate. Driven by the drive mechanism, the push plate pushes the bottom layer of magnet sheets out of the separation chamber, achieving single-sheet separation. After the push plate completes the pushing action, it returns to its original position, waiting for the next separation action.

[0004] However, since the stacked magnetic steel sheets fall under their own weight to fill the space created after the bottom magnetic steel sheet is pushed out, thus achieving automatic progressive feeding, after the pusher plate pushes the lower magnetic steel sheet out of the separation chamber, the stacked magnetic steel sheets will fall directly onto the pusher plate surface, which has not yet fully reset. As the pusher plate returns, it will slide relative to the bottom of the magnetic steel sheet. Combined with the strong magnetic attraction between the magnetic steel sheets, this can easily cause scratches, coating wear, and other damage to the surface of the magnetic steel sheets. This not only affects the appearance quality of the magnetic steel sheets but also damages the integrity of the surface coating, resulting in uneven magnetic field distribution, which in turn affects the operating accuracy and service life of the permanent magnet stepper motor. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a permanent magnet rotor magnet separation device and separation method, which effectively solves the problems in the background art.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is: a permanent magnet rotor magnet separation device, comprising: a support platform, a limiting baffle, a movable baffle, and a pushing assembly; The limiting baffle is fixedly installed on the support platform, and the movable baffle is movable relative to the limiting baffle. A placement space is formed between the movable baffle and the limiting baffle, and a through groove is reserved between the bottom of the movable baffle and the limiting baffle and the support platform. The pushing component includes a push plate and a driving component that connects to and drives the push plate through the through slot to push out the lower magnetic steel sheet; The movable baffle has two clamping assemblies symmetrically arranged on the side wall facing the limiting baffle along the pushing direction. The clamping assembly includes an eccentric roller that spans the stacked magnetic steel sheets, a support frame that supports the eccentric roller, and a drive motor that drives the eccentric roller to rotate to clamp the stacked magnetic steel sheets. A position sensor is provided below the movable baffle to monitor the return position of the push plate.

[0007] Furthermore, a protective plate is provided on the surface of the support platform; The guard plate, the eccentric roller, the push plate, the limiting baffle, and the movable baffle are all made of non-magnetic materials.

[0008] Furthermore, a high-permeability shielding shell is provided on the outside of the drive motor.

[0009] Furthermore, the driving component includes: A guide rod assembly is provided along the pushing direction of the push plate; The fixing seat is fixedly mounted on the guide rod assembly; A sliding seat is movably mounted on the guide rod assembly; The first drive cylinder is used to drive the sliding seat to move toward or away from the fixed seat; The sliding seat drives the push plate through the connecting structure to push out the lower magnetic steel sheet.

[0010] Furthermore, the connection structure includes a first corner seat fixed on the sliding seat and a second corner seat fixed below the push plate; the first corner seat and the second corner seat are fixedly connected.

[0011] Furthermore, a support seat is also provided on the guide rod assembly; The fixed seat is located at the middle position between the support seat and the sliding seat; A second drive cylinder is provided on the support base and the fixed base. The second drive cylinder is connected to the movable baffle through a connecting plate, and the position sensor is provided on the connecting plate.

[0012] Furthermore, a proportional pressure reducing valve is provided in the circuits of the first driving cylinder and the second driving cylinder.

[0013] Furthermore, the limiting baffle includes a gantry base and a side plate disposed on the side of the gantry base facing the movable baffle; The side plate is adjustablely mounted on the gantry base in the vertical direction; Furthermore, the bottom side edge of the side plate bends horizontally away from the movable baffle, and the horizontal edge forms the through groove with the support platform.

[0014] Furthermore, the movable baffle includes a baffle body, two side ears formed by bending along both sides of the baffle body, and two third corner seats disposed on the two side ears and passing through the support platform and connected to the connecting plate; Two fourth corner seats are provided on the side wall of the baffle body away from the limiting baffle, and the two fourth corner seats are adjustablely set on the support platform through strip holes.

[0015] The present invention also provides a method for separating permanent magnet rotor magnets, applied to the aforementioned permanent magnet rotor magnet separating device, comprising the following steps: Before the pusher is started, the two drive motors synchronously drive the eccentric rollers to rotate relative to each other to the clamping position. The radial protrusions of the eccentric structure apply a lateral clamping force to the upper stacked magnets, so that the magnets are clamped and fixed. Start the drive assembly, which drives the pusher plate through the through slot at a first preset speed, and horizontally pushes the bottom layer of magnetic steel sheet. During the pushing process, the eccentric roller remains in a clamping state. After the bottom magnetic steel sheet is pushed out of the placement space, the drive component reverses the drive, and the pusher plate begins to return along the original path at the second preset speed; at this time, the eccentric roller still maintains the clamping state, and the upper magnetic steel sheet continues to be suspended in the air. When the position sensor detects that the push plate has fully reset to the initial position, it sends a signal to the PLC. The PLC controls the drive motor to drive the eccentric roller to rotate in the opposite direction to the release position, releasing the clamping force. The upper magnetic steel sheet falls smoothly under the action of gravity, completing the automatic progressive feeding.

[0016] The beneficial effects of this invention are as follows: In this invention, the controllable clamping setting of two eccentric rollers is used to generate static friction force by radial pressure to balance the gravity of the magnet. While ensuring the automatic feeding of the magnet sheet, wear on the magnet sheet is avoided during the return stroke of the push plate. During the return stroke of the push plate, the timing linkage between the position sensor and the PLC can ensure that the eccentric roller is released only after the push plate is fully reset, avoiding accidental contact caused by timing errors. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the separation state structure of the permanent magnet rotor magnet separation device in an embodiment of the present invention; Figure 2This is a top view of the permanent magnet rotor magnet separation device in an embodiment of the present invention; Figure 3 This is a schematic diagram of the clamping of two clamping components in an embodiment of the present invention; Figure 4 for Figure 2 AA section view; Figure 5 This is a schematic diagram of the push plate in its initial state in an embodiment of the present invention; Figure 6 This is an exploded view of the permanent magnet rotor magnet separation device in an embodiment of the present invention; Figure 7 This is a schematic diagram of the structure of the driving component in an embodiment of the present invention; Figure 8 This is a schematic diagram showing the connection between the driving component, the third corner bracket, and the connecting structure in an embodiment of the present invention; Figure 9 This is a schematic diagram of the connection structure in an embodiment of the present invention; Figure 10 This is a schematic diagram of the structure of the movable baffle in an embodiment of the present invention.

[0019] Reference numerals: 1. Support platform; 11. Guard plate; 2. Limiting baffle; 21. Gantry seat; 22. Side plate; 22a. Horizontal edge; 3. Movable baffle; 31. Baffle body; 32. Side lug; 33. Third corner seat; 34. Fourth corner seat; 4. Pushing assembly; 41. Push plate; 42. Drive assembly; 421. Guide rod assembly; 422. Fixed seat; 423. Sliding seat; 424. First drive cylinder; 425. Support seat; 426. Second drive cylinder; 427. Connecting plate; 43. Connecting structure; 431. First corner seat; 432. Second corner seat; 5. Clamping assembly; 51. Eccentric roller; 52. Support frame; 53. Drive motor; 6. Position sensor. Detailed Implementation

[0020] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0022] like Figures 1 to 10The permanent magnet rotor magnet separation device shown includes: a support platform 1, a limiting baffle 2, a movable baffle 3, and a pushing assembly 4; The limiting baffle 2 is fixedly installed on the support platform 1, and the movable baffle 3 is movable relative to the limiting baffle 2. A placement space is formed between the movable baffle 3 and the limiting baffle 2. A through groove is reserved between the bottom of the movable baffle 3 and the limiting baffle 2 and the support platform 1. The pushing component 4 includes a push plate 41 and a driving component 42 that connects to and drives the push plate 41 through the through groove to push out the bottommost layer of stacked magnets. The movable baffle 3 has two clamping components 5 symmetrically arranged on the side wall facing the limiting baffle 2 along the pushing direction. The clamping components 5 include an eccentric roller 51 that spans the stacked magnets, a support frame 52 that supports the eccentric roller 51, and a drive motor 53 that drives the eccentric roller 51 to rotate to clamp the stacked magnets. A position sensor 6 is provided below the movable baffle 3 to monitor the return position of the push plate 41.

[0023] In this invention, after the stacked magnetic steel sheets are placed into the placement space formed by the limiting baffle 2 and the movable baffle 3, the position of the movable baffle 3 is initially adjusted manually to control the gap between the movable baffle 3, the limiting baffle 2, and the magnetic steel sheets within a threshold range. This gap satisfies the automatic feeding requirement of the magnetic steel falling under its own weight, and also prevents tilting during the stacking process through the lateral constraint of the movable baffle 3 and the guiding effect of the clamping assembly 5. Simultaneously, the initial positions of the two clamping assemblies 5 are calibrated so that the eccentric rollers 51 are symmetrically distributed across both sides of the stacked magnetic steel sheets, with their axes aligned with the magnetic steel stacking direction. The eccentric rollers 51 are driven by a drive motor 53. By adjusting the output torque of the control motor, the clamping force of the eccentric rollers 51 on the magnetic steel can be adjusted, ensuring stable switching between the clamping and releasing positions under motor drive. Furthermore, the eccentric rollers 51 of the clamping assembly 5 are directly driven by the drive motor 53, and the output torque of the drive motor 53 is controlled by a PLC, thereby achieving stepless adjustment of the clamping force of the eccentric rollers 51 on the stacked magnetic steel sheets.

[0024] During implementation, the push plate 41 and the clamping mechanism are linked via a PLC. The specific process is as follows: Clamping preparation stage: Before starting the push plate 41, two drive motors 53 synchronously drive two eccentric rollers 51 to rotate relative to each other to the clamping position. The eccentric structure applies a lateral clamping force to the upper stacked magnets, clamping and fixing the magnets to prevent displacement during the push plate 41's movement; Pushing and separating stage: The drive assembly 42 drives the push plate 41 through the slot, pushing the bottom magnet out horizontally into the placement space at a preset speed. During this process, the eccentric rollers 51 remain clamped, ensuring the upper magnet is stably suspended and does not contact the push plate 41; Push plate 41... 1. Return stage: When the push plate 41 completes the push-out action and begins the return, the eccentric roller 51 remains clamped, keeping the upper magnetic steel sheet in a suspended state and not in contact with the return push plate 41, thus eliminating scratches and wear caused by relative sliding from the root. 2. Release and replenishment stage: After the position sensor 6 confirms that the push plate 41 has fully returned and reset, the PLC controls the drive motor 53 to drive the two eccentric rollers 51 to rotate to the release position, releasing the clamping force and allowing the stacked magnetic steel sheets to fall smoothly by their own weight, completing the automatic feeding. The above steps are repeated to achieve continuous and damage-free separation of the stacked magnetic steel sheets.

[0025] In this invention, the controllable clamping setting of two eccentric rollers 51 utilizes radial pressure to generate static friction to balance the gravity of the magnet. This ensures automatic feeding of the magnet sheet while preventing wear on the magnet sheet during the return stroke of the push plate 41. During the return stroke of the push plate 41, the timing linkage between the position sensor 6 and the PLC ensures that the eccentric rollers 51 are released only after the push plate 41 has fully reset, avoiding accidental contact caused by timing errors.

[0026] In a preferred embodiment of the present invention, a guard plate 11 is provided on the platform of the support table 1; the guard plate 11, the eccentric roller 51, the push plate 41, the limiting baffle 2 and the movable baffle 3 are all made of non-magnetic materials.

[0027] Non-magnetic materials, such as brass and 304 stainless steel, are used to avoid additional attraction between the components and the magnets, reducing separation resistance. Additionally, a polyurethane elastic layer is coated on the surface of the eccentric roller 51 to increase the coefficient of friction and improve clamping stability, while also preventing the magnet edges from colliding due to hard contact.

[0028] To prevent the magnetism of the steel sheet from affecting the operation of the motor, a high-permeability shielding shell is provided on the outside of the drive motor 53. The high-permeability shielding shell, through magnetic circuit shunting, confines the external magnetic field of the steel sheet to the outside of the shielding shell, preventing the magnetic field from penetrating into the motor, ensuring that the motor operates stably according to the preset program, and avoiding the disruption of the separation device's operating sequence caused by magnetic interference.

[0029] In a preferred embodiment, the drive assembly 42 includes a guide rod assembly 421, a fixed seat 422, a sliding seat 423, and a first drive cylinder 424. The guide rod assembly 421 is arranged along the pushing direction of the push plate 41; the fixed seat 422 is fixedly arranged on the guide rod assembly 421; the sliding seat 423 is movably arranged on the guide rod assembly 421; the first drive cylinder 424 is used to drive the sliding seat 423 to move towards or away from the fixed seat 422; the sliding seat 423 drives the push plate 41 to push out the lower magnetic steel sheet through the connecting structure 43.

[0030] Specifically, the fixed seat 422 serves as the mounting reference for the drive cylinder, and the axial direction of the guide rod assembly 421 is set parallel to the pushing direction of the push plate 41. This guides the movement of the sliding seat 423 and stably transmits the driving force of the first drive cylinder 424 to the sliding seat 423, ensuring that the push plate 41 pushes along the same path each time, thus avoiding the magnetic steel sheet from getting stuck or its edges from being bumped due to trajectory deviation.

[0031] In the initial state, the first drive cylinder 424 is in the extended state, the sliding seat 423 is located at the rear end of the guide rod assembly 421, and the push plate 41 is away from the magnetic steel sheet stacking area, maintaining a safe distance from the bottom magnetic steel sheet. At this time, the eccentric roller 51 is in the clamping state, stably holding the upper magnetic steel sheet. The PLC sends a start signal to the first drive cylinder 424, and the air source supplies air to the cylinder rod chamber through the solenoid valve. The cylinder piston rod retracts, pushing the sliding seat 423 to slide along the guide rod assembly 421. The sliding seat 423 drives the push plate 41 to move forward synchronously through the connecting structure 43. The front end of the push plate 41 contacts the bottom layer. Under continuous thrust, the magnetic steel sheet slides along the support platform 1 until it is pushed out of the placement space. The control solenoid valve reverses, and the air source supplies air to the rodless chamber of the cylinder. The piston rod extends, causing the sliding seat 423 and the push plate 41 to slide in the opposite direction along the guide rod group 421 and return to the initial position. During the return stroke, because the eccentric roller 51 still clamps the upper magnetic steel sheet, the push plate 41 does not contact the magnetic steel sheet, thus avoiding wear. After the push plate 41 is reset, the position sensor 6 sends a signal to the PLC, triggering the eccentric roller 51 to loosen and rotate, releasing the new bottom magnetic steel sheet and entering the next separation cycle.

[0032] like Figure 8 and Figure 9 As shown, the connection structure 43 includes a first corner seat 431 fixed on the sliding seat 423 and a second corner seat 432 fixed below the push plate 41; the first corner seat and the second corner seat are fixedly connected.

[0033] The second corner seat 432 is fixed on the first corner seat 431. The second corner seat 432 is connected to the push plate 41 by bolts. The strip groove opened on the push plate 41 allows the push plate 41 to flexibly adjust the initial pushing position, ensuring that the magnet can be completely removed from the placement space.

[0034] In a preferred embodiment, a support base 425 is also provided on the guide rod assembly 421; a fixed base 422 is located in the middle position between the support base 425 and the sliding base 423; and a second drive cylinder 426 is provided on the support base 425 and the fixed base 422. The second drive cylinder 426 is connected to the movable baffle 3 through a connecting plate 427, and the position sensor 6 is provided on the connecting plate 427.

[0035] When faced with magnetic steel sheets of different sizes, the position of the movable baffle 3 can be dynamically adjusted by the second drive cylinder 426, which can meet diverse separation needs, reduce equipment changeover time, and improve production flexibility. The sensor is set on the connecting plate 427 and can move synchronously with the baffle, so that the monitoring point is always aligned with the key position of the baffle, ensuring that the detection signal truly reflects the baffle state and avoiding detection failure due to misalignment.

[0036] In a preferred embodiment of the present invention, a proportional pressure reducing valve is provided in the circuit of the first driving cylinder 424 and the second driving cylinder 426. The first driving cylinder 424 drives the push plate 41, which can automatically adjust the pushing force according to the thickness and magnetic strength of the magnet, avoiding the magnet from getting stuck due to insufficient pushing force or the edge from breaking due to excessive pushing force; while the second driving cylinder 426 drives the movable baffle 3, which can control the baffle clamping force within a set range, ensuring the stable positioning of the baffle on the magnet and avoiding wear of the baffle or magnet caused by hard contact.

[0037] In a preferred embodiment of the present invention, the limiting baffle 2 includes a gantry seat 21 and a side plate 22 disposed on the side of the gantry seat 21 facing the movable baffle 3. The side plate 22 is adjustablely disposed on the gantry seat 21 in the vertical direction, and the limiting height can be flexibly adjusted according to the stacking height of the magnetic steel sheets. The bottom side edge of the side plate 22 bends away from the movable baffle 3 at a horizontal edge 22a, and the horizontal edge 22a forms a through groove with the support platform 1. When the push plate 41 passes through the through groove, the horizontal edge 22a constrains the push plate 41 from above, preventing the push plate 41 from tilting upward due to force, while the support platform 1 supports the push plate 41 from below. With the lateral limiting of the through groove, it is ensured that the push plate 41 always moves in a straight line in the horizontal direction, and the magnetic steel sheets will not be bumped due to the skewed trajectory when pushing them. In addition, a guide roller is provided at the bend of the horizontal edge 22a to avoid sharp corners contacting the edges of the magnetic steel sheets and causing scratches, reducing the risk of damage to the magnetic steel sheets.

[0038] In this invention, the limiting baffle 2 and the movable baffle 3 form a double constraint on the magnetic steel sheet, which works in conjunction with the clamping force of the eccentric roller 51 to guide the magnetic steel sheet to accurately fall into position during its descent. At the same time, the through groove formed along the horizontal axis 22a and the guide rod group 421 of the drive assembly 42 together constitute a double guide for the push plate 41, further improving the pushing accuracy and providing structural protection for non-destructive separation.

[0039] In this invention, the movable baffle 3 includes a baffle body 31, two side ears 32 formed by bending along the two sides of the baffle body 31, and two third corner seats 33 disposed on the two side ears 32 and connected to the connecting plate 427 through the support platform 1; two fourth corner seats 34 are provided on the side wall of the baffle body 31 away from the limiting baffle 2, and the two fourth corner seats 34 are adjustablely disposed on the support platform 1 through strip holes.

[0040] The side ears 32 on both sides of the baffle body 31 are symmetrically distributed and rigidly connected to the connecting plate 427 via the third corner seat 33. The connecting plate 427 is connected to the second drive cylinder 426, which evenly transmits the driving force of the second drive cylinder 426 to both sides of the baffle body 31, avoiding baffle tilting caused by unilateral drive. The two fourth corner seats 34 are connected to the support platform 1 through strip holes, allowing the movable baffle 3 to move laterally within a certain range and ensuring that the distance between the movable baffle 3 and the limiting baffle 2 is sufficient for the falling of the magnet.

[0041] This invention also provides a method for separating permanent magnet rotor magnets, applied to a permanent magnet rotor magnet separation device, comprising the following steps: Before the pusher plate 41 is started, the two drive motors 53 synchronously drive the eccentric roller 51 to rotate relative to each other to the clamping position. The radial protrusions of the eccentric structure apply a lateral clamping force to the upper stacked magnets, so that the magnets are clamped and fixed, thus preventing displacement when the pusher plate 41 moves. Start the drive assembly 42. The drive assembly 42 drives the push plate 41 to pass through the through groove at a first preset speed and push the bottom magnetic steel sheet horizontally. During the pushing process, the eccentric roller 51 remains in a clamping state to ensure that the upper magnetic steel sheet is stably suspended and does not come into contact with the push plate 41. After the bottom magnetic steel sheet is pushed out of the placement space, the drive component 42 drives in the opposite direction, and the push plate 41 starts to return along the original path at the second preset speed; at this time, the eccentric roller 51 still maintains the clamping state, and the upper magnetic steel sheet continues to be suspended; the relative sliding with the return push plate 41 is completely eliminated, and surface scratches are avoided from the root.

[0042] When the position sensor 6 detects that the push plate 41 has been fully reset to the initial position, it sends a signal to the PLC. The PLC controls the drive motor 53 to drive the eccentric roller 51 to rotate in the opposite direction to the release position, releasing the clamping force. The upper magnetic steel sheet falls smoothly under the action of gravity, completing the automatic progressive feeding. Repeat the above cycle to achieve continuous separation of the stacked magnet sheets.

[0043] This step, through a closed-loop timing design of clamping, pushing, return, and replacement, ensures that the upper magnetic steel sheet falls only after the pusher plate 41 has fully retracted, reducing the scratch rate on the surface of the magnetic steel sheet. In addition, the actions from clamping to replacement in this step are all controlled by PLC and sensor linkage, eliminating the need for manual adjustment of stacking or intervention in the separation process, reducing quality fluctuations caused by human operation, and reducing the labor intensity of operators, thus adapting to the integration needs of automated production lines.

[0044] Those skilled in the art should understand that this invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to this invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A permanent magnet rotor magnet separation device, characterized in that, include: Support platform, limit baffle, movable baffle, and pushing component; The limiting baffle is fixedly installed on the support platform, and the movable baffle is movable relative to the limiting baffle. A placement space is formed between the movable baffle and the limiting baffle, and a through groove is reserved between the bottom of the movable baffle and the limiting baffle and the support platform. The pushing component includes a push plate and a driving component that connects to and drives the push plate through the through slot to push out the lower magnetic steel sheet; The movable baffle has two clamping assemblies symmetrically arranged on the side wall facing the limiting baffle along the pushing direction. The clamping assembly includes an eccentric roller that spans the stacked magnetic steel sheets, a support frame that supports the eccentric roller, and a drive motor that drives the eccentric roller to rotate to clamp the stacked magnetic steel sheets. A position sensor is provided below the movable baffle to monitor the return position of the push plate; The driving component includes: A guide rod assembly is provided along the pushing direction of the push plate; The fixing seat is fixedly mounted on the guide rod assembly; A sliding seat is movably mounted on the guide rod assembly; The first drive cylinder is used to drive the sliding seat to move toward or away from the fixed seat; The sliding seat drives the push plate to push out the lower magnetic steel sheet through the connecting structure; A support base is also provided on the guide rod assembly; The fixed seat is located at the middle position between the support seat and the sliding seat; A second drive cylinder is provided on the support base and the fixed base. The second drive cylinder is connected to the movable baffle through a connecting plate, and the position sensor is provided on the connecting plate.

2. The permanent magnet rotor magnet separation device according to claim 1, characterized in that, A protective plate is provided on the surface of the support platform; The guard plate, the eccentric roller, the push plate, the limiting baffle, and the movable baffle are all made of non-magnetic materials.

3. The permanent magnet rotor magnet separation device according to claim 1, characterized in that, A high-permeability shielding shell is provided on the outside of the drive motor.

4. The permanent magnet rotor magnet separation device according to claim 1, characterized in that, The connection structure includes a first corner seat fixed on the sliding seat and a second corner seat fixed below the push plate; the first corner seat and the second corner seat are fixedly connected.

5. The permanent magnet rotor magnet separation device according to claim 1, characterized in that, A proportional pressure reducing valve is installed in the circuits of the first driving cylinder and the second driving cylinder.

6. The permanent magnet rotor magnet separation device according to claim 1, characterized in that, The limiting baffle includes a gantry base and a side plate disposed on one side of the gantry base facing the movable baffle; The side plate is adjustablely mounted on the gantry base in the vertical direction; Furthermore, the bottom side edge of the side plate bends horizontally away from the movable baffle, and the horizontal edge forms the through groove with the support platform.

7. The permanent magnet rotor magnet separation device according to claim 1, characterized in that, The movable baffle includes a baffle body, two side ears formed by bending along both sides of the baffle body, and two third corner seats disposed on the two side ears and passing through the support platform and connected to the connecting plate; Two fourth corner seats are provided on the side wall of the baffle body away from the limiting baffle, and the two fourth corner seats are adjustablely set on the support platform through strip holes.

8. A method for separating permanent magnet rotor magnets, applied to the permanent magnet rotor magnet separating device according to any one of claims 1-7, characterized in that, Includes the following steps: Before the pusher is started, the two drive motors synchronously drive the eccentric rollers to rotate relative to each other to the clamping position. The radial protrusions of the eccentric structure apply a lateral clamping force to the upper stacked magnets, so that the magnets are clamped and fixed. Start the drive assembly, which drives the push plate through the through slot at a first preset speed, and horizontally pushes the bottom magnetic steel sheet. During the pushing process, the eccentric roller remains in a clamping state. After the bottom magnetic steel sheet is pushed out of the placement space, the drive component reverses the drive, and the pusher plate begins to return along the original path at the second preset speed; at this time, the eccentric roller still maintains the clamping state, and the upper magnetic steel sheet continues to be suspended in the air. When the position sensor detects that the push plate has fully reset to the initial position, it sends a signal to the PLC. The PLC controls the drive motor to drive the eccentric roller to rotate in the opposite direction to the release position, releasing the clamping force. The upper magnetic steel sheet falls smoothly under the action of gravity, completing the automatic progressive feeding.

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