Motor rotor magnet pasting die

Abstract

The utility model relates to the field of magnet pasting, and discloses a motor rotor magnet pasting die, which comprises a mounting disc, an iron yoke and a plurality of magnets, a first limiting step is annularly arranged on the mounting disc, the iron yoke abuts against the side wall of the first limiting step for limiting, a plurality of limiting openings are circumferentially arranged on the mounting disc, and a limiting cavity is formed between the limiting openings and the iron yoke. The magnet is movably mounted in the limiting cavity; when the magnets are installed in the limiting cavities, the magnets radially move to be attached to the outer walls of the iron yokes under the action of magnetic force between the iron yokes. Glue is coated between the iron yoke and the magnet, and after the glue is solidified, the side wall of the iron yoke is bonded with the magnet. A plurality of limiting cavities distributed in the circumferential direction are formed in the mounting disc, the two circumferential ends of the magnet can be limited in the limiting cavities, glue can be smeared on the side wall of the iron yoke or the magnet, the magnet moves in the radial direction under magnetic attraction of the iron yoke to complete mounting, pasting positioning is more accurate, and mounting operation is more convenient, rapid and efficient.

Description

Technical Field

[0001] This utility model relates to the field of magnet bonding technology, and more specifically, to a motor rotor magnet bonding mold. Background Technology

[0002] In the magnet bonding industry, magnets are widely used in motor rotors, stators, or similar components, and the accuracy of their bonding directly affects equipment efficiency and performance. Traditional methods typically rely on manual operation, where operators apply adhesive and manually place the magnets onto the target surface. This method has the following drawbacks: 1. Inaccurate positioning: Due to human error, magnets may be misaligned, affecting functionality or requiring rework, especially when handling small or numerous magnets. 2. Time-consuming: Without specialized tooling, the process is slow, labor-intensive, and difficult to meet the demands of mass production. 3. Inconsistent quality: Variations in operator skill levels can lead to unstable bonding quality, affecting the performance and reliability of the final product.

[0003] In existing technologies, some simple fixtures or molds can assist in positioning, but their accuracy is limited, making it difficult to achieve sub-millimeter alignment. Furthermore, most are general-purpose designs and lack specificity for magnet bonding. Therefore, an efficient and precise manual tooling is needed to improve the efficiency and quality of magnet bonding. Utility Model Content

[0004] To address at least one of the aforementioned problems, this utility model first provides a motor rotor magnet bonding mold, comprising a mounting plate, a yoke, and several magnets. The mounting plate has a first limiting step circumferentially arranged around it. The yoke abuts against the sidewall of the first limiting step to restrict the installation position. The mounting plate has several limiting openings distributed circumferentially, forming a limiting cavity between the limiting openings and the yoke. The magnet is installed in the limiting cavity and is movably connected to the limiting cavity. When the magnet is installed in the limiting cavity, it moves radially under the magnetic force between the yoke and the magnet until it adheres to the outer wall of the yoke. Adhesive is applied between the yoke and the magnet; after the adhesive solidifies, the sidewall of the yoke and the magnet are bonded together.

[0005] Optionally, the mounting plate includes a body and a base plate detachably connected to the body. The body and the base plate are threaded together to clamp the upper and lower ends of the yoke, and the bottom of the magnet abuts against the base plate.

[0006] Optionally, a second limiting step is provided around the base plate, and the bottom of the iron yoke abuts against the second limiting step.

[0007] Optionally, it also includes an adjusting bolt, wherein a positioning part is provided at the center of the mounting plate, and the adjusting bolt is axially connected to the positioning part and the base plate. When the adjusting bolt is rotated, the positioning part moves axially closer to the base plate to press the yoke.

[0008] Optionally, the base plate is provided with a groove in the ring, which is located between the magnet and the yoke to collect the extruded glue.

[0009] Optionally, the yoke is provided with threaded holes at both the upper and lower ends, and the yoke is adapted to be threadedly connected to the mounting plate and / or the base plate.

[0010] Optionally, a partition wall is provided between adjacent limiting ports, and the two ends of the magnet are limited between two adjacent partition walls.

[0011] Optionally, the cross-section of the partition wall is an equilateral trapezoid.

[0012] Compared to existing technologies, the motor rotor magnet pasting mold in this utility model sets several circumferentially distributed limiting cavities on the mounting plate, so that the two ends of the magnet can be limited in the limiting cavities. Adhesive can be applied to the iron yoke or the side wall of the magnet. The magnet moves radially under the magnetic attraction of the iron yoke to complete the installation, making the pasting and positioning more accurate and the installation operation more convenient and efficient. Attached Figure Description

[0013] Figure 1 This is a structural diagram of the motor rotor magnet bonding mold according to an embodiment of the present invention;

[0014] Figure 2 This is an exploded view of the motor rotor magnet bonding mold according to an embodiment of this utility model;

[0015] Figure 3 This is a cross-sectional view of the motor rotor magnet bonding mold according to an embodiment of the present invention;

[0016] Figure 4 for Figure 3 Enlarged view of section A in the middle;

[0017] Figure 5 This is a structural diagram of the main body of an embodiment of this utility model.

[0018] Explanation of reference numerals in the attached figures:

[0019] 1. Mounting plate; 11. Body; 111. First limiting step; 112. Limiting port; 113. Positioning part; 114. Partition wall; 115. Flange; 12. Base plate; 121. Second limiting step; 122. Groove; 13. Adjusting bolt; 2. Yoke; 21. Threaded hole; 3. Magnet. Detailed Implementation

[0020] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0021] This utility model embodiment provides a motor rotor magnet bonding mold, combined with Figures 1-5 As shown, the device includes a mounting plate 1, a yoke 2, and several magnets 3. The mounting plate 1 has a first limiting step 111 on its circumference. The sidewall of the yoke 2 and the first limiting step 111 abuts against each other to limit the installation position. The mounting plate 1 has several limiting openings 112 distributed circumferentially. A limiting cavity is formed between the limiting openings 112 and the yoke 2. The magnets 3 are installed in the limiting cavity and are movably connected to the limiting cavity. When the magnets 3 are installed in the limiting cavity, the magnets 3 move radially under the magnetic force between the yoke 2 and the magnets 3 until they are in contact with the outer wall of the yoke 2. Glue is applied between the yoke 2 and the magnets 3. After the glue solidifies, the sidewall of the yoke 2 and the magnets 3 are bonded together.

[0022] like Figure 1 and 2 As shown, in this embodiment, the cross-section of the mounting plate 1 is circular, the yoke 2 is approximately annular, and the cross-section of the magnet 3 is approximately rectangular. The magnet 3 is made of magnetic steel, and there is a magnetic force between the magnet 3 and the yoke 2. During operation, the user applies adhesive to the magnet 3 or the yoke 2, then places the magnet 3 into the limiting cavity. Under the attraction of the yoke 2 and the limiting effect of the limiting cavity, the magnet 3 moves radially closer to the yoke 2 until it adheres. After the adhesive cures, the mounting plate 1 is removed, thus completing the precise adhesion of the magnet 3. The first limiting step 111 includes an upper step and a lower step, and the yoke 2 is positioned between the upper step and the lower step to facilitate pre-positioning during installation.

[0023] In this utility model, the motor rotor magnet pasting mold has several circumferentially distributed limiting cavities on the mounting plate 1, so that the two ends of the magnet 3 can be limited in the limiting cavities. Adhesive can be applied to the side wall of the yoke 2 or the magnet 3. The magnet 3 moves radially under the magnetic attraction of the yoke 2 to complete the installation, making the pasting and positioning more accurate and the installation operation more convenient and efficient.

[0024] Optionally, the mounting plate 1 includes a body 11 and a base plate 12 detachably connected to the body 11. The body 11 and the base plate 12 are threaded together to clamp the upper and lower ends of the yoke 2. The bottom of the magnet 3 abuts against the base plate 12.

[0025] like Figure 4 As shown, in this embodiment, the diameter of the base plate 12 is smaller than the cross-sectional diameter of the body 11, and the bottom of the body 11 is provided with a flange 115, which surrounds the outer periphery of the base plate 12.

[0026] like Figure 4 As shown, optionally, a second limiting step 121 is provided around the base plate 12, and the bottom of the yoke 2 abuts against the second limiting step 121. The second limiting step 121 and the first limiting step 111 have the same function, and will not be described again here.

[0027] Optionally, it also includes an adjusting bolt 13. The center of the mounting plate 1 is provided with a positioning part 113. The adjusting bolt 13 is axially connected to the positioning part 113 and the base plate 12. When the adjusting bolt 13 is rotated, the positioning part 113 moves axially closer to the base plate 12 to press the yoke 2.

[0028] like Figure 3 As shown, in this embodiment, the positioning part 113 is a cylinder and is integrally formed with the mounting plate 1. The adjusting bolt 13 is set on the central axis of the positioning part 113, so that when the adjusting bolt 13 is rotated, the positioning part 113 can move downward more stably closer to the base plate 12. The positioning part 113 is thicker, making the top of the mounting plate 1 less prone to damage.

[0029] Optionally, the base plate 12 is provided with a groove 122, which is located between the magnet 3 and the yoke 2 to collect the extruded glue.

[0030] like Figure 4 As shown, in this embodiment, the same groove 122 is also provided on the inner top wall of the body 11 so that the glue squeezed out from the upper and lower ends of the magnet 3 and the yoke 2 can be accommodated in the groove 122.

[0031] like Figure 4 As shown, optionally, the upper and lower ends of the yoke 2 are provided with threaded holes 21, and the yoke 2 is adapted to be threaded to the mounting plate 1 and / or the base plate 12, so as to further position and make the structure more stable.

[0032] Optionally, a partition wall 114 is provided between adjacent limiting ports 112, and the two ends of the magnet 3 are limited between two adjacent partition walls 114.

[0033] like Figure 5 As shown, in this embodiment, the gap between two adjacent partition walls 114 is adapted to the width of the magnet 3. While limiting the circumferential movement distance, the partition wall 114 can also block the magnetic interference between two adjacent magnets 3 and prevent the magnet 3 from shifting.

[0034] like Figure 5As shown, optionally, the cross-section of the partition wall 114 is an equilateral trapezoid. The wider end of the equilateral trapezoid is suitable for placing the magnet 3. When the magnet 3 approaches the yoke 2 under the action of magnetic attraction or external thrust, it will be limited to the narrower end of the equilateral trapezoid to prevent movement in the circumferential direction.

[0035] Similarly, the components included in the "components," "mechanisms," and "devices" of this disclosure can also be flexibly combined. They can be modularly produced according to actual needs and assembled as an independent module; or they can be assembled separately to form a module in this device. The division of the above-mentioned components in this disclosure is only one embodiment for ease of reading and is not intended to limit the scope of protection of this disclosure. Any technical solution that includes the above-mentioned components and has the same function should be understood as an equivalent technical solution of this disclosure.

[0036] In the description of this disclosure, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this disclosure.

[0037] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first," "second," etc., may explicitly or implicitly include at least one of that feature. In the description of this disclosure, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0038] In this disclosure, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this disclosure according to the specific circumstances.

[0039] In this disclosure, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0040] It should be noted that when a component is referred to as "fixed to," "set on," "fixed to," or "mounted on" another component, it can be directly on the other component or there may be an intervening component. When a component is considered to be "connected to another component," it can be directly connected to the other component or there may be an intervening component. Furthermore, when a component is considered to be "fixedly connected" to another component, the connection can be detachable or non-detachable, such as through socketing, snap-fitting, integral molding, welding, etc., which are achievable in conventional technologies and will not be elaborated upon here.

[0041] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0042] The above embodiments are merely illustrative of several implementation methods of this disclosure, and their descriptions are relatively specific and detailed. However, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the inventive concept of this disclosure, and these modifications and improvements all fall within the protection scope of this disclosure.

Claims

1. A motor rotor magnet sticking mold characterized by, The application relates to a magnetic assembly, which comprises a mounting disc (1), an iron yoke (2) and a plurality of magnets (3), the mounting disc (1) is provided with a first limiting step (111) around the mounting disc (1), the side wall of the first limiting step (111) abuts against the iron yoke (2) to limit the mounting position, a plurality of limiting openings (112) are distributed circumferentially on the mounting disc (1), the limiting openings (112) and the iron yoke (2) form limiting cavities, the magnets (3) are mounted in the limiting cavities and are movably connected with the limiting cavities; when the magnets (3) are mounted in the limiting cavities, the magnets (3) are moved radially to be attached to the outer wall of the iron yoke (2) under the magnetic force between the iron yoke (2) and the magnets (3); glue is coated between the iron yoke (2) and the magnets (3), and the side wall of the iron yoke (2) and the magnets (3) are bonded after the glue is solidified.

2. The motor rotor magnet bonding mold according to claim 1, wherein The mounting disc (1) comprises a body (11) and a bottom plate (12) which is detachably connected with the body (11), the body (11) and the bottom plate (12) are screw-connected to clamp the upper and lower ends of the iron yoke (2), and the bottom of the magnet (3) abuts against the bottom plate (12).

3. The mold for bonding the rotor magnet of the electric motor according to claim 2, wherein The bottom plate (12) is provided with a second limiting step (121) around the bottom plate (12), and the bottom of the iron yoke (2) abuts against the second limiting step (121).

4. The mold for pasting the motor rotor magnet according to claim 2, wherein The application further comprises an adjusting bolt (13), the center of the mounting disc (1) is provided with a positioning part (113), the adjusting bolt (13) is axially connected with the positioning part (113) and the bottom plate (12) at the same time, and when the adjusting bolt (13) is rotated, the positioning part (113) is axially close to the bottom plate (12) to press the iron yoke (2).

5. The mold for bonding the rotor magnet of the electric motor according to claim 2, wherein The bottom plate (12) is provided with a groove (122) around the bottom plate (12), and the groove (122) is arranged between the magnet (3) and the iron yoke (2) to receive the squeezed glue.

6. The mold for pasting the motor rotor magnet according to claim 2, wherein The upper and lower ends of the iron yoke (2) are provided with threaded holes (21), and the iron yoke (2) is suitable for screwing the mounting disc (1) and / or the bottom plate (12).

7. The mold for bonding the rotor magnet of the electric motor according to claim 1, wherein The limiting openings (112) are provided with interval walls (114) between adjacent limiting openings (112), and the two ends of the magnet (3) are limited between adjacent interval walls (114).

8. The motor rotor magnet bonding mold of claim 7, wherein, The interval wall (114) has an equilateral trapezoidal cross section.

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