A rotor structure, a glue cleaning assembly, a glue cleaning method, an electric machine and a compressor

Abstract

The application provides a rotor structure, a glue cleaning assembly, a glue cleaning method, a motor and a compressor, and belongs to an energy-saving pump. The rotor structure comprises a shaft core body and a plurality of magnetic steels; the plurality of magnetic steels are pasted to the outer circumferential surface of the shaft core body, a plurality of glue storage grooves are distributed on the outer circumferential surface in a circumferential direction at intervals, and the glue storage grooves extend along the axial direction of the shaft core body; wherein the glue storage grooves have radial openings penetrating the outer circumferential surface, the circumferential interval between two adjacent glue storage grooves is used for accommodating one magnetic steel, and the radial openings of the glue storage grooves are circumferentially aligned with the gap between the adjacent magnetic steels. In the application, the part of glue overflowed due to extrusion is guided and stored in the groove through the radial openings of the glue storage grooves, so that a glue bridge or a bonding structure is not formed between the adjacent magnetic steels, the stress on the magnetic steels due to bonding is eliminated, and the risk of cracking of the magnetic steels is eliminated.

Description

Technical Field

[0001] This invention belongs to the field of compressor technology, specifically relating to a rotor structure, a glue removal assembly, a glue removal method, a motor, and a compressor, and is a type of energy-saving pump. Background Technology

[0002] Surface-mounted magnets are typically glued to the outer circumference of the rotor structure. During magnet installation, to ensure bonding strength, a sufficient amount of glue is usually applied between the magnet and the rotor structure. However, in practice, when the magnet is pressed onto the rotor structure surface, excess glue easily overflows from the magnet edges and seeps into the circumferential gaps between adjacent magnets. Due to the narrow gaps between adjacent magnets, the overflowing glue is difficult to remove promptly, and after curing, it can easily cause the adjacent magnets to stick together. This adhesion directly weakens the overall strength of the rotor structure. When the motor rotates at high speed, because the tensile strength of the glue is often greater than that of the magnet, the adhered magnets will crack due to stress reaching their strength limit before separating at the adhesion point. This increases the stress on the adhered magnets, leading to magnet cracking, further disrupting the rotor's dynamic balance, and ultimately causing the rotor to lose operational stability. Summary of the Invention

[0003] This invention provides a rotor structure, a glue removal component, a glue removal method, a motor, and a compressor, which belong to the category of energy-saving pumps. It can solve the technical problem of how to effectively prevent excess glue from seeping into the interface between adjacent magnets during the magnet bonding process.

[0004] This invention provides a rotor structure comprising: a shaft core body and a plurality of magnets; Multiple magnets are attached to the outer peripheral surface of the shaft core body, and multiple glue storage grooves are distributed circumferentially on the outer peripheral surface, with the glue storage grooves extending along the axial direction of the shaft core body; The glue storage tank has a radial opening that penetrates the outer peripheral surface, and the circumferential spacing between two adjacent glue storage tanks is used to accommodate a magnet. The radial opening of the glue storage tank is aligned with the gap between adjacent magnets in the circumferential direction.

[0005] In some embodiments, the two ends of the shaft core body are respectively provided with shaft shoulders, and the shaft shoulders are provided with through holes. The glue storage tank communicates with the through holes, so that a glue removal channel is formed between the glue storage tank and the through holes. The glue removal channel is used to guide the glue to move axially.

[0006] A glue-removing assembly is provided for removing glue from a rotor structure, the rotor structure being the aforementioned rotor structure. The glue-removing assembly includes a glue-removing rod, which is inserted axially into the glue storage tank and moves axially along the glue storage tank.

[0007] In some embodiments, the length of the cleaning rod is not less than the axial length of the glue storage tank, and the outer diameter of the cleaning rod is adapted to the inner diameter of the glue storage tank, so that the cleaning rod can extend into the glue storage tank from one end and exit from the other end.

[0008] In some embodiments, a radial force-applying member is also included, which is detachably fitted around the outer periphery of the magnet and applies a radial clamping force toward the core body to the magnet.

[0009] In some embodiments, the radial force-applying member is annular and is sleeved on the outer periphery of the magnet.

[0010] In some embodiments, the radial force-applying component includes a split first arc-shaped block and a second arc-shaped block, which are circumferentially joined together to form a ring structure.

[0011] A method for removing adhesive residue, wherein the method removes adhesive residue from a rotor structure using a adhesive removal assembly, the adhesive removal assembly being the aforementioned adhesive removal assembly, and the method comprising: The magnets are attached to the outer circumferential surface of the shaft core body, and the gap between adjacent magnets is aligned with the radial opening of the glue storage tank. Insert the glue-removing rod into one end of the glue storage tank, move it axially and exit it from the other end to push out the excess glue in the glue storage tank, thus completing the first glue removal of the magnet.

[0012] In some embodiments, when the adhesive removal assembly further includes a radial force-applying element, the adhesive removal method further includes: The radial force-applying component is fitted onto the outer periphery of the magnet, and a radial clamping force is applied to the magnet; Insert the glue removal rod again from one end of the glue storage tank and move it axially to push out the excess glue squeezed out during the radial force application process, thus completing the second glue removal of the magnet. After the adhesive has cured, remove the radial force-applying component from the magnet.

[0013] An electric motor includes a rotor structure, wherein the rotor structure is the rotor structure described above.

[0014] A compressor includes a motor, said motor being the motor described above.

[0015] The rotor structure, glue removal assembly, glue removal method, motor, and compressor provided by this invention have the following beneficial effects: In this invention, during the pressing of the magnets, the portion of adhesive that overflows due to compression is guided and stored in the adhesive storage tank through the radial opening, thereby preventing excess adhesive from remaining in the circumferential gap between adjacent magnets. Since the overflowing adhesive is effectively collected in the adhesive storage tank, it will not form adhesive bridges or adhesive structures between adjacent magnets, eliminating the risk of magnet cracking due to increased stress on the magnets themselves after adhesion. This ensures the structural integrity and reliability of the rotor under high-speed rotation. The presence of the adhesive storage tank allows the operator to apply sufficient amount of adhesive without worrying about overflow causing adverse consequences, thereby ensuring that the bonding strength between the magnets and the rotor structure meets the set requirements. In addition, the glue storage tank is axially extended through the outer circumference of the shaft core body. It not only holds excess glue, but also forms several axially extending groove structures on the outer circumference of the shaft core body. These groove structures significantly increase the contact area between the shaft core body and the external cooling medium, and at the same time form an axial airflow channel. When the motor rotates at high speed, this airflow channel can promote the axial flow of cooling gas, thereby effectively removing the heat generated by the magnets and shaft core body during operation, reducing rotor temperature rise, and improving the motor's heat dissipation efficiency and operational stability.

[0016] In this invention, the opening of the glue reservoir is aligned with the gap between the magnets, allowing the glue overflowing during pressing to flow naturally into the reservoir radially, rather than circumferentially into the narrow gap between the magnets. This directional guiding mechanism geometrically ensures the controlled distribution of the overflowing glue. Since the gap between the magnets itself does not have a glue storage structure, if the glue flows directly into the gap, it is difficult to remove after curing. The glue reservoir, as a dedicated overflow containment space, prevents the glue from curing in unintended areas, fundamentally solving the adhesion problem. The glue reservoir does not occupy the main bonding area between the magnet and the iron core, and its circumferential position is aligned with the side of the magnet, so it does not interfere with the positioning and fit of the magnet, ensuring the circumferential accuracy and radial fit of the magnet assembly.

[0017] A rotor structure, a glue removal assembly, a glue removal method, a motor, and a compressor are provided, belonging to the category of energy-saving pumps. Attached Figure Description

[0018] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the adhesive removal assembly according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the present invention when the magnet is not installed on the shaft core body; Figure 3 This is a schematic diagram of the magnet being mounted on the shaft core body according to an embodiment of the present invention; Figure 4 This is a schematic diagram of the rotor structure when the degumming rod has not been used to remove the degumming material according to an embodiment of the present invention; Figure 5 This is a schematic cross-sectional view of the degumming tank of the rotor structure according to an embodiment of the present invention; Figure 6 for Figure 5 Enlarged detail of section I; Figure 7 This is a schematic cross-sectional view of the rotor structure shoulder according to an embodiment of the present invention; Figure 8 This is a schematic diagram of the rotor structure of this invention without the radial force-applying component installed; Figure 9 This is a schematic diagram of the radial force-applying component installed on the rotor structure according to an embodiment of the present invention; Figure 10 This is a schematic diagram of a radial force-applying component installed on a rotor structure and a glue-removing rod removing glue, according to an embodiment of the present invention. Figure 11 This is a schematic diagram illustrating the removal of the radial force-applying component from the rotor structure according to an embodiment of the present invention; Figure 12 This is a schematic diagram of the radial force-applying components after splicing, according to an embodiment of the present invention; Figure 13 This is a schematic diagram showing the disassembly of the radial force-applying component according to an embodiment of the present invention; Figure 14 A schematic diagram of the glue overflow direction when no glue storage tank is provided in the prior art; Attached Figures: 1-Shaft core body; 101-Shaft shoulder; 111-Through hole; 2-Magnet; 3-Glue storage tank; 301-Radial opening; 4-Glue cleaning rod; 5-Radial force application component; 501-First arc-shaped block; 502-Second arc-shaped block. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present invention or its application or use. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] In the description of this invention, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is generally based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this invention and simplifying the description. Unless otherwise stated, these directional terms 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 on the scope of protection of this invention; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0022] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used here to describe the spatial positional relationship of a device or feature as shown in the figure with other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation in addition to the orientation of the device as described in the figure. For example, if a device in the figure is inverted, a device described as "above" or "on top of" other devices or structures will subsequently be positioned as "below" or "under" other devices or structures.

[0023] See also Figures 1 to 7 As shown, according to an embodiment of the present invention, a rotor structure is provided, belonging to an energy-saving pump, including a shaft core body 1 and multiple magnets 2; the multiple magnets 2 are attached to the outer peripheral surface of the shaft core body 1, and multiple glue storage grooves 3 are distributed circumferentially on the outer peripheral surface, extending axially along the shaft core body 1; wherein, the glue storage groove 3 has a radial opening 301 penetrating the outer peripheral surface, the circumferential spacing between two adjacent glue storage grooves 3 is used to accommodate one magnet 2, and the radial opening 301 of the glue storage groove 3 is aligned circumferentially with the gap between adjacent magnets 2, so that when the magnet 2 is pressed into the outer peripheral surface, the glue squeezed out by the edge of its adjacent magnet 2 can only flow into the glue storage groove 3, and cannot accumulate at the circumferential contact surface of adjacent magnets 2. In this embodiment, the width and depth of the radial opening 301 of the glue storage groove 3 need to be preset according to the amount of glue overflow to fully accommodate excess glue. During installation, the magnet 2 should be prevented from shifting, and its two side edges should be accurately aligned with the opening of the glue storage groove 3 to effectively guide the overflow path. During the installation of magnet 2, as long as the glue storage grooves 3 are evenly opened according to the number of magnets 2 required to be pasted on the rotor, the first magnet 2 is pasted between two glue storage grooves 3. The boundaries of the other magnets 2 will naturally be above the glue storage grooves 3. Moreover, the opening of the glue storage grooves 3 will have almost no impact on the overall magnetic circuit of the rotor. The number of glue storage grooves 3 is equal to the number of blocks in the circumferential direction of magnet 2.

[0024] For details, please refer to [link / reference]. Figure 14As shown, if there is too much glue between the magnets 2, it will flow radially from the bonding surface between the magnet 2 and the shaft core body 1 to the outer edge of the adjacent magnets 2. Since multiple glue storage grooves 3 are distributed circumferentially on the outer circumferential surface of the shaft core body 1, and each groove extends axially and has a radial opening 301 penetrating the outer circumferential surface, the circumferential spacing between two adjacent glue storage grooves 3 is configured to accommodate one magnet 2. Sufficient glue is evenly applied to the outer circumferential surface of the shaft core body 1, i.e., the spacing area between each glue storage groove 3, to ensure the bonding strength between the magnets 2 and the rotor structure. Each magnet 2 is aligned and placed at the circumferential spacing position between two adjacent glue storage grooves 3, so that the two circumferential edges of the magnet 2 are aligned with the radial openings 301 of the adjacent glue storage grooves 3. Apply radial inward pressure to each magnet 2 to make it fit tightly against the outer circumference of the rotor structure. During the pressing process, excess glue is squeezed out from the edge of the magnet 2 and flows into the corresponding glue storage tank 3 along the radial opening 301. Since the glue storage tank 3 is directly opposite the gap between adjacent magnets 2 in the circumferential direction, the overflowing glue is guided into the glue storage tank 3 instead of remaining in the narrow gap between the magnets 2 in the circumferential direction, thus maintaining the relative position of the magnet 2 and the shaft core body 1.

[0025] In this embodiment, during the pressing of the magnet 2, the portion of adhesive that overflows due to the squeezing is guided and stored in the reservoir 3 through the radial opening 301, thereby preventing excess adhesive from remaining in the circumferential gap between adjacent magnets 2. Since the overflowing adhesive is effectively collected in the reservoir 3, it will not form adhesive bridges or adhesive structures between adjacent magnets 2 after curing, eliminating the risk of increased stress on the magnets and cracking caused by adhesion, thus ensuring the structural integrity and reliability of the rotor under high-speed rotation. The presence of the reservoir 3 allows the operator to apply sufficient amount of adhesive without worrying about overflow causing adverse consequences, thereby ensuring that the bonding strength between the magnet 2 and the rotor structure meets the set requirements. In addition, the glue storage tank 3 is axially extended through the outer peripheral surface of the shaft core body 1. It is not only used to hold excess glue, but also forms a number of axially extending groove structures on the outer peripheral surface of the shaft core body 1. The groove structure significantly increases the contact area between the shaft core body 1 and the external cooling medium, and at the same time forms an axial airflow channel. When the motor rotates at high speed, the airflow channel can promote the flow of cooling gas along the axial direction, thereby effectively removing the heat generated by the magnet 2 and the shaft core body 1 during operation, reducing the rotor temperature rise, and improving the heat dissipation efficiency and operating stability of the motor.

[0026] In this embodiment, the opening of the glue storage tank 3 is aligned with the gap between the magnets 2, allowing the glue overflowing during pressing to naturally flow into the tank along the radial opening 301, rather than entering the narrow gap between the magnets 2 circumferentially. This directional guiding mechanism geometrically ensures the controlled distribution of the overflowing glue. Since the gap between the magnets 2 itself does not have a glue storage structure, if the glue flows directly into the gap, it will be difficult to remove after curing. The glue storage tank 3, as a dedicated overflow container, avoids the glue curing in unintended areas, fundamentally solving the problem of magnet adhesion. The glue storage tank 3 does not occupy the main bonding area between the magnets 2 and the iron core, and its circumferential position is aligned with the side of the magnets 2, so it will not interfere with the positioning and fitting of the magnets 2, ensuring the circumferential accuracy and radial fit of the magnets 2 assembly.

[0027] See also Figures 1 to 7 As shown, the shaft core body 1 has shoulders 101 at both ends, and through holes 111 on the shoulders 101. The glue storage tank 3 communicates with the through holes 111, forming a glue removal channel between the glue storage tank 3 and the through holes 111. The glue removal channel is used to guide the axial movement of the glue. In this embodiment, the shoulders 101 and the shaft core body 1 are integrally formed. The shaft core body 1 is a cylinder. At both ends of the shaft core body 1, the outer diameter suddenly increases to form a ring-shaped boss, which is the shoulder 101. The through holes 111 are located on the radial end face of the shoulders 101 and are drilled in the axial direction, that is, drilled from the end face of the shoulders 101 towards the center of the shaft core. The center line of the through holes 111 is parallel to the axis of the shaft core or inclined at a small angle, and intersects with the end of the glue storage tank 3 on the surface of the shaft core, that is, near the root of the shoulders 101. In other embodiments, the shoulder 101 can also be an independent annular sleeve or flange, which is fixed to the end of the shaft core body 1 by interference fit, threaded connection or pin. The through hole 111 is pre-machined on the independent shoulder 101 part. The end of the glue storage tank 3 of the shaft core body 1 also needs to extend to the mounting surface of the shoulder 101. When the shoulder 101 is installed in place, the outlet of the glue storage tank 3 is aligned with the inlet of the through hole 111 on the shoulder 101.

[0028] Specifically, the magnet 2 is attached to the outer surface of the shaft core body 1. At this time, the magnet 2 will squeeze the glue layer. The squeezed glue first flows into the glue storage tank 3 on the surface of the shaft core. Due to the continued pressure, the glue pressure in the glue storage tank 3 increases. At this time, the glue will move along the axial direction of the glue storage tank 3. After attaching the magnet 2, the glue is removed immediately by using an external tool to remove the glue through the glue removal channel.

[0029] In this embodiment, by connecting the glue storage tank 3 on the surface of the shaft core body 1 with the through hole 111 on the shaft shoulder 101, a directional fluid channel is pre-constructed from the bonding interface through the glue storage tank 3 to the end of the shaft shoulder 101. During the installation and pressurization of the magnet 2, excess glue is no longer randomly spilled, but is forced to be discharged along this predetermined path, realizing the active replacement of air in the glue layer, effectively eliminating air gaps and bubbles between the bonding interfaces, thereby significantly improving the density and bonding strength of the glue layer. Since the glue is constrained to flow within the predetermined channel, it can be cleaned later, effectively preventing the accidental flow of excess glue along the edge of the magnet 2 to the critical mating surface of the magnet 2 in the middle of the shaft core. This not only saves subsequent cleaning costs, but also avoids adverse effects on the rotor dynamic balance and bearing assembly accuracy.

[0030] As a specific implementation, the inner wall surface of the adhesive removal channel is a smooth surface, or it is coated with a release coating to reduce the adhesion between the adhesive and the inner wall of the channel, making the adhesive easier to push out and reducing residue. This ensures that the adhesive squeezed out from the edge of the magnet 2 falls into the adhesive storage tank 3 and does not overflow onto the end face of the magnet 2.

[0031] See also Figures 1 to 13 As shown, a glue removal assembly is used to remove glue from a rotor structure. The rotor structure is the rotor structure described above. The glue removal assembly includes a glue removal rod 4, which is inserted into the glue storage tank 3 along the axial direction and moves along the axial direction of the glue storage tank 3. In this embodiment, a shoulder 101 is provided. Specifically, the glue removal rod 4 moves within the glue removal channel.

[0032] Specifically, after the adhesive cures, the excess adhesive in the glue storage tank 3 forms independent glue blocks, which will not cause adhesion to adjacent magnets 2. The head of the glue removal rod 4 is aligned with the opening of the through hole 111 on the end face of the rotor shoulder 101. In some embodiments, the outlet of the through hole 111 can be provided with a chamfer or a flared mouth to guide the insertion of the glue removal rod 4. The glue removal rod 4 is inserted axially from the opening of the through hole 111 on the end face of the shoulder 101. At this time, the head of the glue removal rod 4 first enters the interior of the through hole 111. Since the inner diameter of the through hole 111 is greater than or equal to the diameter of the glue removal rod 4, the glue removal rod 4 can be smoothly inserted into the through hole 111. Continue to push the glue removal rod 4 so that it passes through the through hole 111 until its head emerges from the other end of the through hole 111 and enters the glue storage tank 3. At this time, the body of the glue removal rod 4 spans the connection point between the through hole 111 and the glue storage tank 3. A continuous axial thrust is applied to the cleaning rod 4, causing it to move along the extension direction of the glue storage tank 3. As the cleaning rod 4 moves axially, its shaft acts on the uncured glue within the storage tank 3. As the cleaning rod 4 moves from one end of the storage tank 3 to the other, the glue flowing into the tank 3 is pushed out by the shaft of the cleaning rod 4 from the other end. After the cleaning rod 4 passes through the storage tank 3, the remaining glue inside the tank 3 is essentially cleaned. After cleaning, the cleaning rod 4 is pulled out of the storage tank 3 along the original path.

[0033] In this embodiment, the adhesive removal rod 4, as the core actuator of the adhesive removal assembly, is set independently of the rotor structure itself. It is a tool specifically configured for the subsequent maintenance and reuse of the adhesive removal channel formed by the adhesive storage tank 3 and the through hole 111. The adhesive removal rod 4, through insertion and movement along the axial direction of the adhesive storage tank 3, directly acts on the bonding interface between the adhesive column and the tank wall and the through hole 111 wall. By mechanically squeezing or scraping, the original adhesive is peeled away from the inner wall of the adhesive storage tank 3 and the inner wall of the through hole 111. The physical destructive effect of the adhesive removal rod 4 does not introduce external media and has minimal impact on the material properties and dimensional accuracy of the rotor body. The adhesive removal rod 4 moves within the predetermined track of the adhesive storage tank 3, and its axial movement trajectory is consistent with the extension direction of the adhesive removal channel. It converts the externally applied thrust into a driving force along the axial direction of the adhesive storage tank 3, acting on the adhesive. The cross-section of the adhesive removal rod 4 corresponds to the cross-section of the adhesive storage tank 3, so that the damaged adhesive can only be pushed out along the predetermined adhesive removal channel and will not move laterally to other surfaces of the shaft core.

[0034] In this embodiment, the relatively continuous inner wall of the glue removal channel provides a unique and unavoidable guiding path for the glue removal rod 4. The glue removal rod 4 must move along the axial direction of the glue storage tank 3 and cannot move laterally. The setting of the glue removal rod 4 transforms the static channel, which originally could only serve as a glue container, into a dynamic structure with active cleaning capabilities. The combination of the two ensures that the glue removal force is strictly applied to the axial longitudinal section of the glue removal channel, avoiding eccentric wear or damage to other parts of the rotor during the glue removal process, and achieving high-precision directional glue removal. In addition, after the glue in the glue storage tank 3 is removed, the glue storage tank 3 is axially penetrated through the outer peripheral surface of the shaft core body 1, forming several axially extending groove structures on the outer peripheral surface of the shaft core body 1. This groove structure significantly increases the contact area between the shaft core body 1 and the external cooling medium, and at the same time forms an axial airflow channel. When the motor rotates at high speed, this airflow channel can promote the axial flow of cooling gas, thereby effectively removing the heat generated by the magnet 2 and the shaft core body 1 during operation, reducing the rotor temperature rise, and improving the motor's heat dissipation efficiency and operational stability.

[0035] In one specific implementation, the front end of the glue-cleaning rod 4 is provided with a guide portion, the cross-sectional dimension of which gradually decreases along the axial direction. This facilitates the smooth insertion of the glue-cleaning rod 4 into the glue storage tank 3, and the guide portion can play a guiding and initial glue-breaking role, especially when there is a lot of residual glue in the tank.

[0036] See also Figures 1 to 7 As shown, the length of the cleaning rod 4 is not less than the axial length of the glue storage tank 3, and the outer diameter of the cleaning rod 4 is adapted to the inner diameter of the glue storage tank 3, so that the cleaning rod 4 can be inserted into the glue storage tank 3 from one end and exited from the other end.

[0037] In this embodiment, by simultaneously defining the two key dimensional parameters of the cleaning rod 4—length and outer diameter—a geometric constraint relationship is formed with the corresponding structure of the glue storage tank 3. When the cleaning rod 4 moves axially, its front contact surface can move from one end inlet to the other end outlet of the glue storage tank 3, ensuring that the working section of the cleaning rod 4 completely passes through the entire axial extension range of the glue storage tank 3. When the front end of the cleaning rod 4 passes through the other end of the glue storage tank 3, the pushed-away glue can be released from the outlet end of the glue storage tank 3 without accumulating in any part of the tank or forming a new blockage. Because the outer diameter and inner diameter are matched, after the cleaning rod 4 is inserted, its rod body forms circumferential multi-point contact or surface contact with the inner wall of the glue storage tank 3. The matched outer diameter makes the gap between the outer circumferential surface of the cleaning rod 4 and the inner wall of the glue storage tank 3 uniform and controllable. When the cleaning rod 4 moves axially, its outer surface can produce a uniform scraping effect on the glue adhering to the inner wall, avoiding incomplete cleaning due to excessive gap or damage to the tank wall due to excessive interference. The combination of full-length coverage and outer diameter adaptation makes the cleaning rod 4 a reciprocating cleaning tool. Its movement does not require an additional guiding mechanism. It can achieve self-centering solely by the glue storage tank 3 itself. As long as the cleaning rod 4 can complete the complete action of entering from one end and exiting from the other end, it means that all the glue in the glue storage tank 3 in contact with the outer diameter of the cleaning rod 4 has been discharged. The operator only needs to confirm that the cleaning rod 4 can pass through smoothly to judge that the glue cleaning operation is qualified. There is no need to rely on experience, visual inspection or complex measurement, which significantly improves the repeatability and operability of the process.

[0038] See also Figures 1 to 13 As shown, it also includes a radial force-applying component 5, which is detachably sleeved on the outer periphery of the magnet 2 and applies a radial clamping force toward the shaft core body 1 to the magnet 2. The radial force-applying component 5 can be a split or integral sleeve, retaining ring, binding strap, or adjustable hoop.

[0039] Specifically, before the radial force-applying component 5 is installed, the adhesive removal channel has been initially removed using the adhesive removal rod 4. The radial force-applying component 5 is detachably fitted onto the outer peripheral surface of the magnet 2. The radial force-applying component 5 applies a radial clamping force toward the axis of the shaft core body 1. Under the action of this force, the magnet 2 and the outer peripheral surface of the shaft core body 1 form a tight fit, eliminating the radial movement or tilting that may occur due to the gap between the magnet 2 and the outer peripheral surface. Take the cleaning rod 4 and align its working end with the through hole 111 of one end shoulder 101. Since the length of the cleaning rod 4 is not less than the axial length of the glue storage tank 3, its front end continues to move forward until it passes through the opening at the other end of the glue storage tank 3. During the movement of the cleaning rod 4, it exerts a combined axial pushing and radial scraping effect on the uncured glue stored in the glue storage tank 3. The removed glue is pushed out and discharged from the through hole 111 of the other shoulder 101 along with the front end or side of the cleaning rod 4. The radial force application component 5 ensures that the magnet 2 maintains a fixed geometric position throughout the cleaning process. This ensures that the positional relationship between the glue storage tank 3 and the magnet 2, such as the depth, width, and distance between the bottom of the tank and the surface of the magnet 2, remains unchanged during the cleaning process, avoiding the sticking of the cleaning rod 4 or the deviation of the cleaning path caused by the loosening of the magnet 2.

[0040] In this embodiment, after the first preliminary adhesive removal, the magnet 2 and the outer peripheral surface of the shaft are initially fixed only by the uncured adhesive. At this time, the radial force-applying component 5 is fitted around the outer periphery of the magnet 2, applying a continuous and uniform radial clamping force. This forces the inner surface of the magnet 2 to adhere tightly to the outer surface of the shaft, eliminating localized lifting caused by uneven adhesive layer thickness or gravity, and ensuring that the adhesive layer has a uniform thickness and is free of air bubbles during the curing process. The clamping force applied by the radial force-applying component 5 will squeeze out excess adhesive from the edge of the magnet 2 at the interface between the magnet 2 and the shaft, forming new excess adhesive at the outer peripheral edge of the magnet 2. This allows the second adhesive removal to also remove the new excess adhesive generated after the installation of the radial force-applying component 5.

[0041] In this embodiment, the adhesive removal rod 4 initially removes the first free adhesive overflow squeezed out from the edge of the magnet 2 during initial bonding. At this time, the magnet 2 is not yet tightly fixed, and the adhesive removal rod 4 can only remove the obvious surface overflow, unable to handle the deeply embedded or soon-to-be-pressed inner layer adhesive. After applying the clamping force, the residual or excess adhesive between the magnet 2 and the shaft core is forcibly squeezed into the adhesive storage tank 3, forming a second overflow into the adhesive storage tank 3. The adhesive removal rod 4 is used to precisely remove the newly formed overflow after the installation of the radial force application component 5. Since the radial force application component 5 has applied a stable radial constraint to the magnet 2, the magnet 2 is in a fixed state relative to the shaft core. The magnet 2 will not loosen radially or spring back due to the reaction of the scraping force. The radial force application component 5 provides a rigid working surface for the second adhesive removal operation, allowing the scraping action of the adhesive removal rod 4 to be executed precisely, avoiding disturbance to the bonded parts.

[0042] See also Figures 1 to 13 As shown, the radial force-applying component 5 is annular and is sleeved on the outer periphery of the magnet 2.

[0043] In this embodiment, the annular structure forms a closed force path. When the radial force-applying component 5 is tightened and fitted, its inner ring forms full circumferential contact with the outer circumference of the magnet 2. Unlike point or strip-shaped compression, the annular fitting can evenly distribute the compression force along the circumferential direction. This ensures that the adhesive layer between the magnet 2 and the shaft core body 1 is subjected to equal and perpendicular compressive stress in all directions, effectively preventing the magnet 2 from warping on one side or uneven adhesive layer thickness due to uneven local pressure. Since the annular component itself covers the entire outer circumference of the magnet 2, the extruded adhesive will automatically collect in the adhesive storage tank 3. This structure provides a locatable cleaning area for the second adhesive removal.

[0044] See also Figures 1 to 13 As shown, the radial force-applying component 5 includes a split first arc-shaped block 501 and a second arc-shaped block 502. The first arc-shaped block 501 and the second arc-shaped block 502 are joined together circumferentially to form a ring structure. The radial force-applying component 5 is fitted onto the outer surface of the magnet 2 by heat fitting. When the radial force-applying component 5 cools, it generates a uniform and gradually increasing clamping force, pressing each magnet 2 with the same force, ensuring that excess glue can be removed as much as possible, and that the remaining glue layer has a consistent thickness. It is worth noting that in some embodiments, the radial force-applying component 5 adopts an integral ring structure, such as a one-piece molded ring sleeve. After the integral ring sleeve is heated and cooled, it grips the magnet 2 tightly, and a large static friction force is formed between its inner circumferential surface and the outer circumferential surface of the magnet 2. When it needs to be removed from the magnet 2, a large axial pulling force or hammering force must be applied to overcome this static friction force. This axial force will be directly transmitted to the adhesive layer between the magnet 2 and the rotor core, which may cause the uncured adhesive layer to misalign, tear, or even cause the magnet 2 to shift or fall off. To overcome this defect, this embodiment preferably adopts a split structure. The split first arc block 501 and the second arc block 502 are connected by a locking component. During disassembly, it is only necessary to loosen the fasteners to allow the arc block to detach radially from the surface of the magnet 2 without applying an axial pulling force. Therefore, the split structure can effectively protect the pasted magnet 2 from external interference during disassembly, ensuring the positional accuracy of the magnet 2 and the integrity of the adhesive layer.

[0045] Specifically, the first arc-shaped block 501 and the second arc-shaped block 502 are placed from the radial sides of the magnet 2, so that their inner arc surfaces initially approach the outer circumference of the magnet 2 to be pressed. At this time, the two arc-shaped blocks are not yet closed and are in a separated state, which facilitates avoiding other structures on the magnet 2. Along the circumferential direction of the magnet 2, the first arc-shaped block 501 and the second arc-shaped block 502 are moved relative to each other, so that they are aligned circumferentially, and their corresponding end faces fit together to form a complete ring structure. At this time, the inner circular surface of the radial force-applying member 5 makes contact with the outer circumferential surface of the magnet 2. Fasteners are passed through the corresponding mounting holes on the first arc-shaped block 501 and the second arc-shaped block 502 in sequence, and the fasteners are locked by applying a pre-tightening force. During the locking process, the two arc-shaped blocks move closer to each other circumferentially, causing the ring structure to contract inward, thereby applying a uniform radial compressive stress to the outer circumferential surface of the magnet 2 to achieve interference fit clamping fixation.

[0046] In this embodiment, the split first arc-shaped block 501 and the second arc-shaped block 502 can directly clamp and engage from both radial sides of the magnet 2 without axial movement, thus avoiding the obstruction structure on the shaft core. This makes the installation and disassembly of the radial force-applying component 5 simple and flexible. Due to the split design, the axial position of the two arc-shaped blocks can be flexibly adjusted during installation, so that the locking through hole 111 is precisely aligned with the axial boundary of each section of the magnet 2. When the bolt is tightened, the clamping force is directly transmitted to the joint between the sections of the magnet 2 through the through hole 111. Compared with the integrated ring component, which can only generate overall pressure on the ring surface, this point-to-point, boundary-point force application method can more effectively prevent the sections of the magnet 2 from sliding or lifting relative to each other at the axial joint, achieving a uniform clamping effect.

[0047] As a specific implementation method, after the radial force-applying component 5 is integrally formed, it is then divided into two parts by wire cutting along the axis of symmetry parallel to the ears on both sides, to obtain the first arc block 501 and the second arc block 502. The main body shape of the first arc block 501 is arc-shaped, and its arc angle is slightly less than 180°. Since wire cutting will remove a small amount of material, it is actually an arc block slightly smaller than a semicircle. Its inner circular surface is a finely ground surface with high cylindricity, and its inner diameter and the outer diameter of the magnet 2 form a small interference fit. The interference on both sides is controlled within 0.1mm to ensure that a uniform radial clamping force can be generated after it is fitted. First ears are provided at both ends (circumferential ends) of the first arc-shaped block 501. These ears extend radially outward from the main body of the arc-shaped block, and the two first ears have the same shape. Several mounting holes are provided on the first ears along the axial direction, i.e., the length direction of the shaft core. The number of mounting holes is equal to the number of axial segments of the magnet 2 plus one. For example, if the magnet 2 is divided into 3 segments along the axial direction, then there are 4 mounting holes. The axial positions of these mounting holes correspond to the axial boundaries between each segment of the magnet 2, i.e., directly above the gap between each two adjacent segments of the magnet 2. This allows the clamping force to be directly applied to the segment interface when the locking bolt passes through, thereby uniformly clamping each segment of the magnet 2. The structure of the second arc-shaped block 502 is the same as that of the first arc-shaped block 501. Second ears are provided at both ends (circumferential ends) of the second arc-shaped block 502. Mounting holes are also provided on the second ears, with the same number of holes corresponding to the axial positions of the first ears.

[0048] See also Figures 1 to 7 As shown, a glue removal method is described. The glue removal method uses a glue removal assembly to remove glue from the rotor structure. The glue removal assembly is the aforementioned glue removal assembly. The glue removal method includes: The magnet 2 is attached to the outer circumferential surface of the shaft core body 1, and the gap between adjacent magnets 2 is aligned with the radial opening 301 of the glue storage tank 3. Insert the glue removal rod 4 into one end of the glue storage tank 3, move it axially and exit it from the other end to push out the excess glue in the glue storage tank 3, thus completing the first glue removal of the magnet 2.

[0049] In this embodiment, the method allows for immediate cleaning after the magnet 2 is already attached to the shaft core. The cleaning rod 4 utilizes the glue storage tank 3 as a guide channel, ensuring alignment between the gap of the magnet 2 and the opening of the glue storage tank 3. This avoids the cumbersome process of waiting for the glue to cure before separate cleaning, as required by traditional methods. Since the glue storage tank 3 is a pre-designed structure on the shaft core body 1, the cleaning rod 4 only needs to be inserted from one end of the tank, eliminating the need for additional clamps or positioning devices and simplifying the process equipment. Traditional methods often involve using a scraper or cloth to wipe in the radial direction, which can easily squeeze glue deep into the gaps between the magnets 2 or damage the surface of the magnets 2. This method, through axial pushing, allows the cleaning rod 4 to move along the glue storage tank 3, pushing excess glue from one end to the other and discharging it in one go from the tank to the other, resulting in a clear and thorough cleaning path.

[0050] See also Figures 1 to 13 As shown, when the adhesive removal assembly further includes a radial force-applying member 5, the adhesive removal method further includes: The radial force-applying component 5 is fitted onto the outer periphery of the magnet 2, and a radial clamping force is applied to the magnet 2; Insert the glue removal rod 4 into one end of the glue storage tank 3 again and move it axially to push out the excess glue squeezed out during the radial force application 5 pressing process, thus completing the second glue removal of the magnet 2. After the adhesive has cured, remove the radial force-applying component 5 from the magnet 2.

[0051] In this embodiment, although the first adhesive removal removes the adhesive squeezed out during bonding, when the radial force-applying component 5 subsequently applies radial clamping force to the magnet 2, the adhesive layer between the magnet 2 and the shaft core will be further compressed and thinned. The compressed adhesive layer will squeeze out some uncured adhesive, which flows into the adhesive storage tank 3. This method performs a second adhesive removal after the clamping action is completed, pushing out the excess adhesive generated in the clamping process as it flows out, avoiding the accumulation and curing of adhesive in the tank or gap, and achieving real-time synchronous cleaning with the clamping process.

[0052] An electric motor includes a rotor structure, wherein the rotor structure is as described above.

[0053] A compressor includes a motor, which is the motor described above. Specifically, the motor is used in an air compressor, which is essentially a type of compressor.

[0054] It will be readily understood by those skilled in the art that the aforementioned advantageous methods can be freely combined and superimposed without conflict.

[0055] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention. The above are merely preferred embodiments of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the protection scope of the present invention.

Claims

1. A rotor structure, characterized in that, include: The shaft core (1) and multiple magnets (2); Multiple magnets (2) are attached to the outer peripheral surface of the shaft core body (1), and multiple glue storage grooves (3) are distributed circumferentially on the outer peripheral surface, and the glue storage grooves (3) extend along the axial direction of the shaft core body (1); The glue storage tank (3) has a radial opening (301) that penetrates the outer peripheral surface. The circumferential spacing between two adjacent glue storage tanks (3) is used to accommodate a magnet (2), and the radial opening (301) of the glue storage tank (3) is aligned with the gap between adjacent magnets (2) in the circumferential direction.

2. The rotor structure according to claim 1, characterized in that, The shaft core body (1) has shoulders (101) at both ends, and through holes (111) are provided on the shoulders (101). The glue storage tank (3) is connected to the through holes (111), so that a glue removal channel is formed between the glue storage tank (3) and the through holes (111). The glue removal channel is used to guide the glue to move axially.

3. A glue removal assembly for removing glue from a rotor structure, characterized in that, The rotor structure is the rotor structure as described in claim 1 or 2, and the glue removal assembly includes a glue removal rod (4), which is inserted into the glue storage tank (3) axially and moves along the axial direction of the glue storage tank (3).

4. The adhesive removal assembly according to claim 3, characterized in that, The length of the cleaning rod (4) is not less than the axial length of the glue storage tank (3), and the outer diameter of the cleaning rod (4) is adapted to the inner diameter of the glue storage tank (3), so that the cleaning rod (4) can be inserted into the glue storage tank (3) from one end and exit from the other end.

5. The adhesive removal assembly according to claim 3, characterized in that, It also includes a radial force-applying member (5), which is detachably sleeved on the outer periphery of the magnet (2) and applies a radial clamping force toward the shaft core body (1) to the magnet (2).

6. The adhesive removal assembly according to claim 5, characterized in that, The radial force-applying component (5) is annular and is sleeved on the outer periphery of the magnet (2).

7. The adhesive removal assembly according to claim 6, characterized in that, The radial force-applying component (5) includes a split first arc block (501) and a second arc block (502), which are joined together circumferentially to form a ring structure.

8. A method for removing adhesive, wherein the method uses an adhesive removal assembly to remove adhesive from a rotor structure, characterized in that, The adhesive removal assembly is the adhesive removal assembly according to any one of claims 3 to 7, and the adhesive removal method includes: The magnet (2) is attached to the outer circumferential surface of the shaft core body (1), and the gap between adjacent magnets (2) is aligned with the radial opening (301) of the glue storage tank (3). Insert the glue removal rod (4) into one end of the glue storage tank (3), move it axially and pass it out from the other end to push out the excess glue in the glue storage tank (3) and complete the first glue removal of the magnet (2).

9. The glue removal method according to claim 8, characterized in that, When the adhesive removal assembly further includes a radial force application element (5), the adhesive removal method further includes: The radial force-applying member (5) is sleeved on the outer periphery of the magnet (2) and a radial clamping force is applied to the magnet (2); Insert the glue removal rod (4) again from one end of the glue storage tank (3) and move it axially to push out the excess glue squeezed out during the pressing of the radial force application member (5) and complete the second glue removal of the magnet (2); After the adhesive has cured, the radial force-applying component (5) is removed from the magnet (2).

10. An electric motor, comprising a rotor structure, characterized in that, The rotor structure is the rotor structure described in claim 1 or 2.

11. A compressor, comprising a motor, characterized in that, The motor is the motor described in claim 10.

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