Motor rotor magnetic shoe surface mounting tool, surface mounting method thereof and motor assembly production line

Abstract

The invention discloses a motor rotor magnetic shoe surface mounting tool and a surface mounting method thereof and a motor assembly production line, and the tool comprises a rotor housing mold ring, the inner side wall of which is provided with a magnetic shoe supporting structure in a matched manner, so as to form a plurality of magnetic shoe mounting positions for mounting magnetic shoes in the inner circumferential direction of the rotor housing mold ring, the limiting piece of the magnetic shoe supporting structure is arranged between the adjacent magnetic shoe mounting positions; the magnetic shoe auxiliary pressure maintaining device is configured to be detachably mounted in the rotor shell mold ring through a rotating shaft of the rotor shell mold ring; the edge of the magnetic shoe auxiliary pressure-maintaining device is circumferentially provided with a pressure-maintaining assembly corresponding to the installation position of the magnetic shoe, and the pressure-maintaining assembly is used for applying radial pressure to the magnetic shoe, so that the magnetic shoe is tightly attached to the inner side wall of the rotor housing die ring through a bonding layer between the magnetic shoe and the pressure-maintaining assembly. Therefore, the uniform gap between the adjacent magnetic shoes is standardized through the limiting piece and the pressure maintaining assembly, displacement caused by magnetism in the surface mounting process of the magnetic shoes is avoided, the magnetic shoe gap is stably maintained, the consistency of the magnetic shoe gap is guaranteed, and the adjacent magnetic shoes are prevented from being attracted and collided due to magnetism.

Description

Technical Field

[0001] This invention relates to the field of motor technology, and in particular to a surface-mounting fixture for motor rotor magnets, a surface-mounting method thereof, and a motor assembly production line. Background Technology

[0002] The rotor of the external rotor circulating motor is made of steel material and is formed by one stamping. The rotor assembly is composed of surface-mounted ferrite magnets. The housing, shaft, and magnets are important components of the motor rotor assembly structure.

[0003] During the surface mounting process of magnetic tiles, in order to ensure the precise gap between adjacent magnetic tiles, a rotary magnetic tile mounting fixture is required for positioning and installation. However, the design of this fixture has the following defects: its structure is fitted between two magnetic tiles, and it is difficult to demold smoothly after positioning. This not only increases the difficulty of operation, but also significantly prolongs the installation time, resulting in a significant decrease in the efficiency of rotor magnetic tile surface mounting.

[0004] Furthermore, after the tooling is demolded, adjacent magnetic tiles are separated by insulating material, lacking an effective gap-maintaining mechanism. This makes it difficult to guarantee the relative positional stability between the magnetic tiles and effectively maintain the gap between adjacent magnetic tiles. As a result, due to their strong magnetism, the magnetic tiles are prone to lateral displacement after installation due to magnetic attraction. This not only disrupts the preset magnetic tile gap but may also lead to uneven distribution of the rotor magnetic field, affecting the change of the rotor magnetic field. At the same time, the magnetic tiles are brittle, and the magnetic attraction and collision between two magnetic tiles can easily cause damage to the magnetic tiles, producing debris and foreign objects that are difficult to clean. During motor operation, this will cause foreign objects to rub against the edges and damage the windings, resulting in poor motor insulation withstand voltage and other quality hazards, reducing the service life of the motor. Summary of the Invention

[0005] This invention provides a surface-mounting fixture for motor rotor magnets, a surface-mounting method thereof, and a motor assembly production line, which solves the problem that existing surface-mounting fixtures for magnets cannot effectively maintain the gap between adjacent magnets and cannot effectively protect the magnets.

[0006] The technical solution of this invention is a surface-mount fixture for motor rotor magnets, comprising:

[0007] The rotor housing mold ring has a magnetic tile support structure installed on its inner side wall to form multiple magnetic tile mounting positions for mounting magnetic tiles in the inner circumferential direction of the rotor housing mold ring, and the limiting members of the magnetic tile support structure are arranged between adjacent magnetic tile mounting positions.

[0008] A magnetic tile auxiliary pressure holding device is configured to be detachably installed inside the rotor housing mold ring via the rotating shaft of the rotor housing mold ring; a pressure holding component is circumferentially provided on the edge of the magnetic tile auxiliary pressure holding device corresponding to the installation position of the magnetic tile, and the pressure holding component is used to apply radial pressure to the magnetic tile, so that the magnetic tile is tightly attached to the inner wall of the rotor housing mold ring via the adhesive layer therebetween.

[0009] Furthermore, the pressure-holding assembly includes an elastic element, a pushing element, and a return mold ring;

[0010] The magnetic tile auxiliary pressure holding device includes a base, and an elastic element is circumferentially provided on the edge of the base corresponding to the installation position of the magnetic tile. A pushing element is provided at the end of the elastic element, and the outer side of the pushing element away from the elastic element forms a tight-fitting part that matches and fits the magnetic tile.

[0011] The base has a mounting groove on its top circumferential direction, and a detachable return mold ring is matched and installed in the mounting groove. The return mold ring can be matched and engaged with each of the pushers simultaneously.

[0012] When the return mold ring is in the mounting groove and is matched and engaged with all the pushing components, the elastic element is in a compressed state; when the return mold ring is disengaged from the mounting groove, the elastic element is reset.

[0013] Furthermore, each of the pushers is provided with a positioning groove at its top; and the bottom of the mounting groove is provided with a communicating channel corresponding to each positioning groove.

[0014] The bottom of the return mold ring is provided with a first positioning element corresponding to each positioning slot. The first positioning element can pass through the connecting channel and be inserted into the corresponding positioning slot.

[0015] Furthermore, the edges of the base are recessed inward to form sliding grooves corresponding to the installation positions of the magnetic tiles, and the pushing member extends into the sliding grooves and is slidably connected to the sliding grooves.

[0016] An elastic element is provided between the bottom wall of the sliding groove away from the opening and the corresponding pushing element.

[0017] Furthermore, the base is provided with a positioning channel extending through it along the axial direction, and the rotating shaft can be inserted and fitted into the positioning channel along the axial direction, so that the rotating shaft is concentric with the base when inserted.

[0018] Furthermore, the magnetic tile support structure also includes a ring-shaped mounting plate, and the inner side of the mounting plate is provided with limiting members extending in the vertical direction evenly and at intervals along the circumference.

[0019] The top of the mounting plate is provided with a plurality of positioning through holes along the circumferential direction. The top of the rotor housing mold ring is provided with a second positioning member corresponding to each of the positioning through holes. The second positioning member can be inserted into the corresponding positioning through hole.

[0020] Furthermore, all of the aforementioned limiting members are provided with a one-way overflow groove on their outer side, and the one-way overflow groove extends vertically.

[0021] Furthermore, all the contact edges between the limiting members and the magnetic tiles are chamfered for guidance and protection.

[0022] The present invention also proposes a motor assembly production line, which includes the motor rotor magnet surface mounting fixture described above.

[0023] This invention also proposes a surface mounting method for a motor rotor magnet surface mounting fixture, the surface mounting method comprising:

[0024] The magnetic tile support structure is detachably installed on the inner wall of the rotor housing mold ring to form multiple magnetic tile installation positions in the inner circumferential direction of the rotor housing mold ring;

[0025] The return mold ring is placed on top of the magnetic tile auxiliary pressure holding device so that the pressure holding component of the magnetic tile auxiliary pressure holding device is in the return state;

[0026] The magnetic tile-assisted pressure-holding device is detachably installed inside the rotor housing mold ring via a rotating shaft;

[0027] Apply adhesive to the inner wall of the magnetic tile facing the rotor housing mold ring, and install the adhesive-coated magnetic tiles one by one at the magnetic tile installation position;

[0028] After all the magnetic tiles are installed, the return mold ring is removed, and the pressure holding assembly is switched to the extended state so that the end of the pressure holding assembly pushes the magnetic tile tightly against the inner wall of the rotor housing mold ring.

[0029] Compared with the prior art, the present invention has at least one of the following beneficial effects:

[0030] 1. This invention uses a limiting component of the magnetic tile support structure to separate adjacent magnetic tiles. Then, a pressure-holding component of the magnetic tile auxiliary pressure-holding device applies radial pressure to the magnetic tiles, causing them to adhere tightly to the inner wall of the rotor housing mold ring via the adhesive layer between them. This standardizes the uniform gap between adjacent magnetic tiles, avoids displacement caused by magnetism during the surface mounting process of the magnetic tiles, and maintains a stable gap between the magnetic tiles, ensuring the consistency of the magnetic tile gap and avoiding affecting changes in the rotor magnetic field. Furthermore, this also prevents adjacent magnetic tiles from colliding due to magnetism, avoiding damage to the magnetic tiles and the generation of hard-to-clean debris and foreign objects. This reduces quality risks such as foreign objects rubbing against the edges and damaging the windings during motor operation, leading to poor motor insulation withstand voltage, and effectively improves the reliability, service life, and long-term stability of the motor.

[0031] 2. The magnetic tile auxiliary pressure holding device is configured to be detachably installed inside the rotor housing mold ring via the rotating shaft of the rotor housing mold ring. In this way, the rotating shaft of the rotor housing mold ring is used as a concentric guide to provide radial pressure holding during the surface bonding process of the magnetic tile, ensuring the concentricity of the magnetic tile and the reliability of installation.

[0032] 3. After the magnetic tile surface is attached, the magnetic tile support structure does not need to be removed from the rotor housing mold ring, thus preventing the magnetic tile from shifting and colliding due to magnetism. Attached Figure Description

[0033] 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 herein in the specification is for the purpose of describing particular embodiments only and is not intended to limit the invention; the terms "comprising" and "having," and any variations thereof, in the specification, claims, and foregoing drawings are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the specification, claims, or foregoing drawings are used to distinguish different objects and not to describe a particular order.

[0034] To more clearly illustrate the technical solutions in the embodiments of the present invention, 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 of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0035] Figure 1 This is an exploded schematic cross-sectional view of the surface-mount fixture for motor rotor magnets proposed in this invention.

[0036] Figure 2 for Figure 1 Enlarged schematic diagram of reference numeral A in the attached figure;

[0037] Figure 3 for Figure 1 Enlarged schematic diagram of reference numeral B in the attached figure;

[0038] Figure 4 This is a schematic diagram of the installation process of the motor rotor magnet surface mount fixture proposed in this invention;

[0039] Figure 5 This is a schematic diagram showing the completed installation of the motor rotor magnet surface mount fixture proposed in this invention.

[0040] Figure label:

[0041] 10. Rotor housing mold ring;

[0042] 101. Rotating shaft; 102. Second positioning component; 103. Accommodating space;

[0043] 20. Magnetic tile support structure;

[0044] 201. Limiting component; 202. Mounting plate; 203. Positioning through hole; 204. One-way overflow groove;

[0045] 30. Magnetic tiles;

[0046] 40. Installation location of the magnetic tile;

[0047] 50. Magnet-assisted pressure-holding device;

[0048] 501, Pressure holding component; 5011, Elastic element; 5012, Pushing element; 5013, Return mold ring; 5014, Fitting part; 5015, Positioning groove; 5016, First positioning element; 502, Base; 5021, Mounting groove; 5022, Connecting channel; 5023, Sliding groove; 503, Positioning channel. Detailed Implementation

[0049] To make the technical problems, technical solutions, and beneficial effects of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. Therefore, a feature pointed out in this specification is used to illustrate one feature of one embodiment of the invention, and does not imply that every embodiment of the invention must have the described feature. Furthermore, it should be noted that this specification describes many features. Although certain features may be combined to illustrate possible system designs, these features may also be used in other combinations not explicitly stated. Therefore, unless otherwise stated, the described combinations are not intended to be limiting.

[0050] The principles and structure of the present invention will be described in detail below with reference to the accompanying drawings and embodiments.

[0051] The rotor of the external rotor circulating motor is made of steel material and is formed by one stamping. The rotor assembly is composed of surface-mounted ferrite magnets. The housing, shaft, and magnets are important components of the motor rotor assembly structure.

[0052] During the surface mounting process of magnetic tiles, in order to ensure the precise gap between adjacent magnetic tiles, a rotary magnetic tile mounting fixture is required for positioning and installation. However, the design of this fixture has the following defects: its structure is fitted between two magnetic tiles, and it is difficult to demold smoothly after positioning. This not only increases the difficulty of operation, but also significantly prolongs the installation time, resulting in a significant decrease in the efficiency of rotor magnetic tile surface mounting.

[0053] Furthermore, after the tooling is demolded, adjacent magnetic tiles are separated by insulating material, lacking an effective gap-maintaining mechanism. This makes it difficult to guarantee the relative positional stability between the magnetic tiles and effectively maintain the gap between adjacent magnetic tiles. As a result, due to their strong magnetism, the magnetic tiles are prone to lateral displacement after installation due to magnetic attraction. This not only disrupts the preset magnetic tile gap but may also lead to uneven distribution of the rotor magnetic field, affecting the change of the rotor magnetic field. At the same time, the magnetic tiles are brittle, and the magnetic attraction and collision between two magnetic tiles can easily cause damage to the magnetic tiles, producing debris and foreign objects that are difficult to clean. During motor operation, this will cause foreign objects to rub against the edges and damage the windings, resulting in poor motor insulation withstand voltage and other quality hazards, reducing the service life of the motor.

[0054] Therefore, in some embodiments, such as Figure 1 As shown, this invention proposes a surface-mount fixture for motor rotor magnets, comprising:

[0055] The rotor housing mold ring 10 has a magnetic tile support structure 20 installed on its inner side wall to form a plurality of magnetic tile mounting positions 40 for mounting magnetic tiles 30 in the inner circumferential direction of the rotor housing mold ring 10, and the limiting member 201 of the magnetic tile support structure 20 is disposed between adjacent magnetic tile mounting positions 40.

[0056] A magnetic tile auxiliary pressure holding device 50 is configured to be detachably installed inside the rotor housing mold ring 10 via the rotating shaft 101 of the rotor housing mold ring 10; a pressure holding component 501 is circumferentially provided on the edge of the magnetic tile auxiliary pressure holding device 50 corresponding to the magnetic tile installation position 40, and the pressure holding component 501 is used to apply radial pressure to the magnetic tile 30, so that the magnetic tile 30 is tightly attached to the inner wall of the rotor housing mold ring 10 via the adhesive layer therebetween.

[0057] It should be noted that the rotor housing mold ring 10 proposed in this embodiment is formed by one-time stamping, and the top of the rotor housing mold ring 10 is recessed inward to form a cylindrical receiving space 103. The limiting member 201 proposed in this embodiment is made of non-magnetic and non-conductive materials (such as engineering plastics, ceramics, composite materials, etc.). Of course, the limiting member 201 can also be made of other suitable materials according to the actual situation, which is not limited here.

[0058] Thus, when the motor rotor magnet surface mount fixture requires the surface mount magnet 30, firstly, the magnet support structure 20 is detachably installed in the receiving space 103, and the magnet support structure 20 will be tightly attached to the inner wall of the receiving space 103, so as to form multiple magnet mounting positions 40 for mounting the magnet 30 in the circumferential direction within the receiving space 103; then, the magnet auxiliary pressure holding device 50 is positioned in the receiving space 103 via the rotating shaft 101, and the pressure holding component 501 is in the returned state (equivalent to a gap between the end of the pressure holding component 501 and the corresponding magnet mounting position 40, which facilitates the placement of the magnet 30), and then the operator places the magnet 30... Apply adhesive (equivalent to an adhesive layer, the same throughout) to the outer side away from the pressure-holding component 501 or the side wall of the magnetic tile 30 facing the inner sidewall of the receiving space 103. Then, install the adhesive-coated magnetic tiles 30 one by one onto the magnetic tile installation position 40. After all the magnetic tiles 30 are installed, switch the pressure-holding component 501 from the return state to the extended state, that is, the end of the pressure-holding component 501 will move towards the corresponding magnetic tile 30, applying radial pressure to the magnetic tile 30 until the magnetic tile 30 is tightly attached to the inner sidewall of the receiving space 103, so as to maintain a close contact between the magnetic tile 30 and the inner sidewall of the receiving space 103 before and during the curing of the adhesive on the adhesive layer (e.g., Figure 4 (As shown).

[0059] After the adhesive on the bonding layer has cured, the operator first switches the pressure-holding component 501 from the extended state to the returned state, meaning that at this time, the end of the pressure-holding component 501 no longer applies radial pressure to the corresponding magnetic tile 30. Then, the magnetic tile auxiliary pressure-holding device 50 is moved out of or removed from the receiving space 103 to ensure that the magnetic tile auxiliary pressure-holding device 50 will not come into contact with the magnetic tile 30 and cause damage during the movement, thus completing the surface bonding of the magnetic tile (e.g., Figure 5 (As shown).

[0060] Therefore, this invention uses the limiting member 201 of the magnetic tile support structure 20 to separate adjacent magnetic tiles 30, and then applies radial pressure to the magnetic tiles 30 through the pressure holding component 501 of the magnetic tile auxiliary pressure holding device 50, so that the magnetic tiles 30 are tightly attached to the inner sidewall of the rotor housing mold ring 10 through the adhesive layer therebetween. This standardizes the uniform gap between adjacent magnetic tiles 30, avoids displacement caused by magnetism during the surface mounting process of the magnetic tiles 30, and stabilizes the gap between the magnetic tiles 30, ensuring the consistency of the gap between the magnetic tiles 30 and avoiding affecting the changes in the rotor magnetic field. In addition, this can also prevent adjacent magnetic tiles 30 from colliding due to magnetism, avoiding the situation where the magnetic tiles 30 are damaged and generate debris that is difficult to clean. This reduces the quality risks such as foreign objects rubbing against the edges and damaging the windings during motor operation, resulting in poor motor insulation withstand voltage, and effectively improves the reliability, service life and long-term stability of the motor.

[0061] Furthermore, the magnetic tile auxiliary pressure holding device 50 is configured to be detachably installed inside the rotor housing mold ring 10 via the rotating shaft 101 of the rotor housing mold ring 10. In this way, the rotating shaft 101 of the rotor housing mold ring 10 is used as a concentric guide to provide radial pressure holding during the surface bonding process of the magnetic tile, thereby ensuring the concentricity and installation reliability of the magnetic tile 30.

[0062] Furthermore, after the magnetic tile support structure 20 is applied to the surface of the magnetic tile, it is not necessary to remove the rotor housing mold ring 10, thus preventing the magnetic tile 30 from shifting and colliding due to magnetism.

[0063] In some embodiments, to ensure that the pressure-holding assembly 501 applies stable radial pressure to the corresponding magnetic tile 30, such as... Figures 1-2 As shown, the pressure holding assembly 501 includes an elastic element 5011, a pushing element 5012, and a return mold ring 5013;

[0064] The magnetic tile auxiliary pressure holding device 50 includes a base 502. An elastic element 5011 is circumferentially provided on the edge of the base 502 corresponding to the magnetic tile installation position 40. A pushing element 5012 is provided at the end of the elastic element 5011. The outer side of the pushing element 5012 away from the elastic element 5011 forms a tight-fitting part 5014 that matches and fits the magnetic tile 30.

[0065] The base 502 has a mounting groove 5021 on its top circumferential direction. A detachable return mold ring 5013 is matched and installed in the mounting groove 5021. The return mold ring 5013 can be matched and engaged with each of the pushers 5012 at the same time.

[0066] When the return mold ring 5013 is in the mounting groove 5021 and is matched and engaged with all the pushers 5012, the elastic member 5011 is in a compressed state; when the return mold ring 5013 is disengaged from the mounting groove 5021, the elastic member 5011 is reset.

[0067] It should be noted that the elastic element 5011 proposed in this embodiment is preferably a compression spring or a cylindrical rubber elastic element, and the elastic element 5011 is configured to provide radial pressure to compensate for dimensional tolerances or volume changes of the magnetic tile 30, rotor housing mold ring 10, and adhesive layer during the curing process; the outer shape of the pushing element 5012 away from the elastic element 5011 in this embodiment is adapted to the outer surface shape of the magnetic tile 30. Furthermore, the top edge of the base 502 proposed in this embodiment is provided with a continuous mounting groove 5021.

[0068] Thus, when it is necessary to switch the pressure holding component 501 from the extended state to the returned state, and the magnetic tile auxiliary pressure holding device 50 is not in the receiving space 103, all the tight-fitting parts 5014 are spread outwards, and the pusher 5012 is in the extended state under the elastic force of the elastic member 5011. Then, an adjustable radial annular collar is placed on the outside of all the contact parts 5014, meaning all the contact parts 5014 are inside the annular collar. The operator then gradually reduces the radial direction of the annular collar, and the shrinking annular collar simultaneously and evenly squeezes all the pushers 5012 inward from all sides, forcing each pusher 5012 to compress the corresponding elastic element 5011 behind it, achieving synchronous contraction. When all the pushers 5012 are compressed to a predetermined, uniform position, the return mold ring 5013 can simultaneously match and engage with each pusher 5012. Then, the radial direction of the annular collar is increased to disengage. At this time, the elastic element 5011 will maintain its current deformation due to the engagement between the pusher 5012 and the return mold ring 5013, i.e., it is in the locked mode.

[0069] When the pressure holding component 501 switches from the return state to the extension state, it disengages the return mold ring 5013 from the mounting groove 5021. At this time, the elastic element 5011 unlocks and begins to reset. That is, the elastic element 5011 drives the pusher 5012 to move radially outward. During this movement, the pressing part 5014 will contact the corresponding magnetic tile 30 until the pressing part 5014 presses the magnetic tile 30 tightly against the inner wall of the receiving space 103. At this time, the elastic element 5011 will still be partially compressed to continuously apply radial pressure to the magnetic tile 30, so as to maintain a tight contact between the magnetic tile 30 and the inner wall of the receiving space 103 before and during the curing of the adhesive on the adhesive layer.

[0070] Specifically, such as Figures 2-3 As shown, this embodiment proposes a connection structure between the pusher 5012 and the return mold ring 5013:

[0071] Each of the pushers 5012 has a positioning groove 5015 at its top; the bottom of the mounting groove 5021 has a connecting channel 5022 corresponding to each of the positioning grooves 5015.

[0072] The bottom of the return mold ring 5013 is provided with a first positioning element 5016 corresponding to each positioning groove 5015; the first positioning element 5016 can pass through the connecting channel 5022 and be inserted into the corresponding positioning groove 5015.

[0073] Thus, when all the pushing parts 5012 are compressed to a predetermined, uniform position by the annular collar, that is, when the positioning groove 5015 is below the connecting channel 5022, when the return mold ring 5013 is matched and installed in the mounting groove 5021, the first positioning part 5016 will pass through the corresponding connecting channel 5022 and then be inserted into the corresponding positioning groove 5015, thereby completing the engagement of the pushing part 5012 and the return mold ring 5013.

[0074] When the pressure holding component 501 switches from the return state to the extension state, the return mold ring 5013 is disengaged from the mounting groove 5021, that is, the first positioning member 5016 is disengaged from the corresponding positioning groove 5015, so as to unlock the elastic member 5011. Then the elastic member 5011 will drive the pushing member 5012 to move radially outward. During this movement, the pressing part 5014 will contact the corresponding magnetic tile 30 until the pressing part 5014 presses the magnetic tile 30 tightly against the inner wall of the receiving space 103, ensuring the inner circle size and concentricity of the magnetic tile 30. At this time, the elastic member 5011 will still be partially compressed to continuously apply radial pressure to the magnetic tile 30, so as to maintain the tight contact between the magnetic tile 30 and the inner wall of the receiving space 103 before and during the curing of the adhesive on the adhesive layer.

[0075] When the magnetic tile auxiliary pressure holding device 50 is in the accommodating space 103 and the pressure holding component 501 needs to be switched from the extended state to the return state, the return mold ring 5013 is first matched and installed in the mounting groove 5021 to ensure that each first positioning member 5016 is in the corresponding connecting channel 5022. Then, the operator manually pushes the push member 5012 inward one by one so that the positioning groove 5015 is below the connecting channel 5022 and is engaged with the first positioning member 5016 in the connecting channel 5022, thereby completing the engagement of all push members 5012 and return mold ring 5013.

[0076] In some embodiments, to ensure that the pusher 5012 can move stably in the radial direction without directional deviation, such as Figure 1 As shown, the edges of the base 502 are recessed inward to form sliding grooves 5023 corresponding to the magnetic tile installation positions 40. The pusher 5012 extends into the sliding grooves 5023 and is slidably connected to the sliding grooves 5023.

[0077] An elastic element 5011 is provided between the bottom wall of the sliding groove 5023 away from the opening and the corresponding pusher 5012.

[0078] In some embodiments, a buffer layer is provided on the outer side of the contact portion 5014 facing away from the pusher 5012, the buffer layer being used to prevent frictional damage between the contact portion 5014 and the magnetic tile 30.

[0079] It should be noted that the buffer layer is made of rubber or silicone.

[0080] When the 5014 part comes into contact with the magnetic tile 30, the buffer layer is used to absorb impact, reduce vibration, or prevent hard contact, thereby avoiding the situation where the magnetic tile 30 is damaged and produces debris and foreign objects that are difficult to clean. This reduces the quality risks such as foreign objects rubbing against the edge and damaging the windings during motor operation, leading to poor motor insulation withstand voltage, and extends the service life of the motor.

[0081] In some embodiments, such as Figure 1 As shown, the base 502 is provided with a positioning channel 503 through it along the axial direction. The rotating shaft 101 can be inserted and fitted into the positioning channel 503 along the axial direction, so that the rotating shaft 101 is concentric with the base 502 when inserted.

[0082] It should be noted that the size and shape of the positioning channel 503 are designed to match the outer diameter and shape of the rotating shaft 101, so that the rotating shaft 101 can be smoothly inserted into and fitted into the positioning channel 503 of the base 502.

[0083] This configuration ensures that the rotation center of the magnetic tile auxiliary pressure holding device 50 is completely aligned with the rotation center of the rotor housing mold ring 10, so that the radial distance from all the bonding portions 5014 to the inner wall of the receiving space 103 is consistent. This guarantees uniform pressure applied to each magnetic tile 30, ensuring reliable bonding quality. Furthermore, the concentricity ensures a uniform gap between the entire magnetic tile auxiliary pressure holding device 50 and the receiving space 103, preventing scratching or collision (equivalent to interference) between the entire magnetic tile auxiliary pressure holding device 50 and the inner wall of the receiving space 103 or the magnetic tiles 30 when it is removed or inserted, thereby improving operational efficiency and device lifespan.

[0084] In some embodiments, to ensure the stability of the magnetic tile support structure 20 in close contact with the inner wall of the receiving space 103, such as... Figure 1 As shown, the magnetic tile support structure 20 also includes an annular mounting plate 202, and the inner side of the mounting plate 202 is uniformly and spaced along the circumference with limiting members 201 extending in the vertical direction.

[0085] The top of the mounting plate 202 is provided with a plurality of positioning through holes 203 along the circumferential direction. The top of the rotor housing mold ring 10 is provided with a second positioning member 102 corresponding to each of the positioning through holes 203. The second positioning member 102 can be inserted into the corresponding positioning through hole 203.

[0086] In this way, when the positioning through hole 203 of the mounting plate 202 is correspondingly fitted onto the second positioning member 102 on the top of the rotor housing mold ring 10, and the second positioning member 102 and the positioning through hole 203 are in clearance fit, radial wobbling is eliminated, so that the limiting member 201 will not wobble within the accommodating space 103, thus avoiding interference between the limiting member 201 and the magnetic tile 30. This standardizes the uniform gap between adjacent magnetic tiles 30, avoids displacement caused by magnetism during the surface mounting process of the magnetic tile 30, and maintains the gap of the magnetic tile 30 stably, ensuring the consistency of the gap of the magnetic tile 30 and avoiding affecting the change of the rotor magnetic field.

[0087] Furthermore, the magnetic tile support structure 20 is connected to the second positioning member 102 and the positioning through hole 203, which facilitates the installation by the operator and reduces the installation difficulty. This improves the stability of the magnetic tile support structure 20 in close contact with the inner wall of the accommodating space 103, and greatly enhances production efficiency and quality reliability and consistency.

[0088] In some embodiments, such as Figure 1 As shown, all the limiting members 201 are provided with a one-way overflow groove 204 on their outer side, and the one-way overflow groove 204 extends in the vertical direction.

[0089] During the surface bonding process of the magnetic tile 30, the adhesive on the bonding layer of the magnetic tile 30 is prone to overflow along the inner wall of the receiving space 103, resulting in foreign matter contamination inside the receiving space 103 and causing abnormal motor quality. Therefore, it is necessary to provide a one-way overflow groove 204 on the outside of all limiting parts 201 so that the overflowing adhesive can flow out along the one-way overflow groove 204 to the outside of the rotor housing mold ring 10 for cleaning.

[0090] In some embodiments, the contact edges of all the limiting members 201 and the magnetic tile 30 are chamfered for guidance and protection.

[0091] All limiting members 201 are cut into a bevel or arc surface (equivalent to a chamfer) along the radial edge of the receiving space 103. This bevel or arc surface forms a guide channel (equivalent to a guide). When the magnetic tile 30 approaches the guide channel during installation, it will not directly hit the edge of the limiting member 201, but will slide into the correct position along the guide channel. This facilitates the axial or lateral surface mounting of the magnetic tile 30, transforming the contact force during installation from point contact to surface contact, thereby dispersing stress and preventing the magnetic tile 30 from being brittlely damaged by stress compression during installation.

[0092] In some embodiments, the present invention also provides a motor assembly production line, the motor assembly production line including the motor rotor magnet surface mounting fixture described above.

[0093] In this way, the present invention uses the limiting member 201 of the magnetic tile support structure 20 to separate adjacent magnetic tiles 30, and then applies radial pressure to the magnetic tiles 30 through the pressure holding component 501 of the magnetic tile auxiliary pressure holding device 50, so that the magnetic tiles 30 are tightly attached to the inner side wall of the rotor housing mold ring 10 through the adhesive layer therebetween. This regulates the uniform gap between adjacent magnetic tiles 30, avoids displacement caused by magnetism during the surface mounting process of magnetic tiles 30, and stabilizes the gap between magnetic tiles 30, ensuring the consistency of the gap between magnetic tiles 30 and avoiding affecting the changes in the rotor magnetic field. In addition, this can also prevent adjacent magnetic tiles 30 from colliding due to magnetism, avoiding the situation where magnetic tiles 30 are damaged and generate debris that is difficult to clean. This reduces the quality risks such as foreign objects rubbing against the edges and damaging the windings during motor operation, resulting in poor motor insulation withstand voltage, etc., improving production yield and product quality stability, and effectively improving the reliability, service life and long-term stability of the motor.

[0094] In some embodiments, the present invention also provides a surface mounting method for a motor rotor magnet surface mounting fixture, the surface mounting method comprising:

[0095] The magnetic tile support structure 20 is detachably installed on the inner wall of the rotor housing mold ring 10 to form a plurality of magnetic tile mounting positions 40 in the inner circumferential direction of the rotor housing mold ring 10.

[0096] The return mold ring 5013 is placed on top of the magnetic tile auxiliary pressure holding device 50 so that the pressure holding component 501 of the magnetic tile auxiliary pressure holding device 50 is in the return state;

[0097] The magnetic tile-assisted pressure-holding device 50 is detachably installed inside the rotor housing mold ring 10 via a rotating shaft 101;

[0098] Apply adhesive to the inner sidewall of the magnetic tile 30 facing the rotor housing mold ring 10, and install the adhesive-coated magnetic tile 30 one by one at the magnetic tile installation position 40;

[0099] After all the magnetic tiles 30 are installed, the return mold ring 5013 is removed, and the pressure holding assembly 501 is switched to the extended state so that the end of the pressure holding assembly 501 pushes the magnetic tiles 30 to fit tightly against the inner wall of the rotor housing mold ring 10.

[0100] It should be noted that the installation of the magnetic tile support structure 20 and the return mold ring 5013 proposed in this embodiment are not sequential and can be carried out simultaneously.

[0101] Specifically, the pressure holding assembly 501 is brought to its return position via the return die ring 5013, including:

[0102] An adjustable radial annular collar is placed around the outside of all the contact parts 5014, meaning all the contact parts 5014 are inside the annular collar. The operator then gradually reduces the radial direction of the annular collar, causing the shrinking annular collar to simultaneously and evenly compress all the pushing members 5012 inward from all sides. This forces each pushing member 5012 to compress its corresponding elastic member 5011, achieving synchronous contraction until all the pushing members 5012 are compressed to a predetermined, uniform position. Then, the return mold ring 5013 is matched and installed in the mounting groove 5021. The first positioning member 5016 passes through the corresponding connecting channel 5022 and then inserts into the corresponding positioning groove 5015, thereby completing the engagement between the pushing member 5012 and the return mold ring 5013, thus putting the pressure holding assembly 501 in the return state.

[0103] When the return mold ring 5013 is disengaged from the mounting groove 5021, the elastic element 5011 unlocks and begins to reset. That is, the elastic element 5011 will drive the pusher 5012 to move radially outward. During this movement, the pressing part 5014 will contact the corresponding magnetic tile 30 until the pressing part 5014 presses the magnetic tile 30 tightly against the inner wall of the receiving space 103. At this time, the elastic element 5011 will still be partially compressed (equivalent to the pressure holding component 501 being in an extended state) to continuously apply radial pressure to the magnetic tile 30, so as to maintain a tight contact between the magnetic tile 30 and the inner wall of the receiving space 103 before and during the curing of the adhesive on the adhesive layer.

[0104] After the adhesive on the adhesive layer has cured, the operator first installs the return mold ring 5013 into the mounting groove 5021, ensuring that each first positioning element 5016 is in the corresponding connecting channel 5022. Then, the operator manually pushes the pusher 5012 inward one by one, so that the positioning groove 5015 is below the connecting channel 5022 and engages with the first positioning element 5016 in the connecting channel 5022, thereby completing the engagement of all pusher elements 5012 and return mold ring 5013, thus putting the pressure holding assembly 501 in the return state.

[0105] After the pressure holding component 501 is in the return position, the operator then moves or removes the entire magnetic tile auxiliary pressure holding device 50 from the receiving space 103 to complete the magnetic tile surface application.

[0106] Therefore, this invention uses the limiting member 201 of the magnetic tile support structure 20 to separate adjacent magnetic tiles 30, and then applies radial pressure to the magnetic tiles 30 through the pressure holding component 501 of the magnetic tile auxiliary pressure holding device 50, so that the magnetic tiles 30 are tightly attached to the inner sidewall of the rotor housing mold ring 10 through the adhesive layer therebetween. This standardizes the uniform gap between adjacent magnetic tiles 30, avoids displacement caused by magnetism during the surface mounting process of the magnetic tiles 30, and stabilizes the gap between the magnetic tiles 30, ensuring the consistency of the gap between the magnetic tiles 30 and avoiding affecting the changes in the rotor magnetic field. In addition, this can also prevent adjacent magnetic tiles 30 from colliding due to magnetism, avoiding the situation where the magnetic tiles 30 are damaged and generate debris that is difficult to clean. This reduces the quality risks such as foreign objects rubbing against the edges and damaging the windings during motor operation, resulting in poor motor insulation withstand voltage, and effectively improves the reliability, service life and long-term stability of the motor.

[0107] Furthermore, after the magnetic tile support structure 20 is applied to the surface of the magnetic tile, it is not necessary to remove the rotor housing mold ring 10, thus preventing the magnetic tile 30 from shifting and colliding due to magnetism.

[0108] Obviously, the embodiments described above are merely some embodiments of the present invention, not all embodiments. The accompanying drawings show preferred embodiments of the present invention, but do not limit the patent scope of the present invention. The present invention can be implemented in many different forms; rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments, or make equivalent substitutions for some of the technical features. Any equivalent structures made using the content of this specification and drawings, directly or indirectly applied to other related technical fields, are similarly within the patent protection scope of this invention.

Claims

1. A motor rotor magnet tile surface pasting tool, characterized in that, The application relates to a rotor shell mold ring (10), the inner side wall of which is matched with a magnetic tile supporting structure (20) to form a plurality of magnetic tile mounting positions (40) for mounting magnetic tiles (30) in the circumferential direction of the rotor shell mold ring (10), and a limiting piece (201) of the magnetic tile supporting structure (20) is arranged between adjacent magnetic tile mounting positions (40); a magnetic tile auxiliary pressure maintaining device (50) is arranged in the rotor shell mold ring (10) and is detachably mounted on the rotor shell mold ring (10) through a rotating shaft (101) of the rotor shell mold ring (10); an edge of the magnetic tile auxiliary pressure maintaining device (50) is provided with a pressure maintaining assembly (501) corresponding to the magnetic tile mounting positions (40) in the circumferential direction, the pressure maintaining assembly (501) is used for applying radial pressure to the magnetic tiles (30) so that the magnetic tiles (30) are tightly attached to the inner side wall of the rotor shell mold ring (10) through a pasting layer therebetween. The pressure maintaining assembly (501) comprises an elastic piece (5011), a pushing piece (5012) and a return mold ring (5013). The magnetic tile auxiliary pressure maintaining device (50) comprises a base (502), an elastic piece (5011) is arranged at the edge of the base (502) corresponding to the magnetic tile mounting positions (40) in the circumferential direction, an end of the elastic piece (5011) is provided with a pushing piece (5012), and the pushing piece (5012) is formed with a tight-attaching part (5014) matched with the magnetic tile (30) and away from the outer side of the elastic piece (5011).

2. The motor rotor magnet tile table lacing tool of claim 1, wherein, A top of the base (502) is provided with a mounting groove (5021), and a detachable return mold ring (5013) is arranged in the mounting groove (5021) in a matched mode, and the return mold ring (5013) can be matched with each pushing piece (5012) at the same time. When the return mold ring (5013) is in the mounting groove (5021) and is matched with all the pushing pieces (5012), the elastic piece (5011) is in a compressed state; when the return mold ring (5013) is separated from the mounting groove (5021), the elastic piece (5011) is reset. A top of each pushing piece (5012) is provided with a positioning groove (5015), and a bottom of the mounting groove (5021) is provided with a communication channel (5022) corresponding to each positioning groove (5015). A bottom of the return mold ring (5013) is provided with a first positioning piece (5016) corresponding to each positioning groove (5015) in a matched mode, and the first positioning piece (5016) can pass through the communication channel (5022) and be inserted into the corresponding positioning groove (5015).

3. The motor rotor magnet tile table lacing tool of claim 2, wherein, An edge of the base (502) is recessed inward to form a sliding groove (5023) corresponding to the magnetic tile mounting positions (40), and the pushing piece (5012) is matched with the sliding groove (5023) and is in sliding connection with the sliding groove (5023). An elastic piece (5011) is arranged between a bottom wall of a far opening of the sliding groove (5023) and the corresponding pushing piece (5012).

4. The motor rotor magnet tile table lacing tool of claim 2, wherein, ​ ​ 5. The motor rotor magnet tile table lacing tool of claim 2, wherein, The base (502) is provided with a positioning channel (503) along the axial direction, and the rotating shaft (101) is matched and inserted into the positioning channel (503) along the axial direction, so that the rotating shaft (101) is concentric with the base (502) when being inserted.

6. The motor rotor magnet tile table lacing tool of claim 1, wherein, The magnetic shoe supporting structure (20) further comprises a mounting plate (202) arranged in a ring shape, and the inner side of the mounting plate (202) is uniformly and spacedly provided with limiting members (201) extending in the vertical direction along the circumferential direction. The top of the mounting plate (202) is provided with a plurality of positioning through holes (203) along the circumferential direction, and the top of the rotor shell mold ring (10) is provided with a second limiting member (102) corresponding to each positioning through hole (203), and the second limiting member (102) can be inserted into the corresponding positioning through hole (203).

7. The motor rotor magnet tile table lacing tool of claim 1 or 6, wherein, The outer side of all the limiting members (201) is provided with a one-way overflow groove (204) extending in the vertical direction.

8. The motor rotor magnet tile table lacing tool of claim 1 or 6, wherein, The contact edges of all the limiting members (201) and the magnetic shoes (30) are chamfered and guided for protection.

9. An electric machine assembly line, characterized in that, The motor assembly production line comprises the motor rotor magnetic shoe surface mounting tool of any one of claims 1 to 8.

10. A method for surface mounting of a motor rotor magnet shoe table, characterized in that, The surface mounting method comprises: The magnetic shoe supporting structure (20) is detachably mounted on the inner side wall of the rotor shell mold ring (10) to form a plurality of magnetic shoe mounting positions (40) in the circumferential direction of the rotor shell mold ring (10); The reset mold ring (5013) is matched and placed on the top of the magnetic shoe auxiliary pressure maintaining device (50) to make the pressure maintaining assembly (501) of the magnetic shoe auxiliary pressure maintaining device (50) in a reset state; The magnetic shoe auxiliary pressure maintaining device (50) is detachably mounted in the rotor shell mold ring (10) through the rotating shaft (101); The magnetic shoes (30) are glued towards the inner side wall of the rotor shell mold ring (10), and the glued magnetic shoes (30) are installed one by one in the magnetic shoe mounting positions (40); After all the magnetic shoes (30) are installed, the reset mold ring (5013) is removed, the pressure maintaining assembly (501) is switched to an extended state, and the end of the pressure maintaining assembly (501) pushes the magnetic shoes (30) to tightly adhere to the inner side wall of the rotor shell mold ring (10).

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