Magnetic steel transfer mechanism and rotor assembly device

Abstract

The utility model belongs to the technical field of motor rotor manufacturing, and discloses a magnetic steel transfer mechanism and a rotor assembling device.The magnetic steel transfer mechanism comprises a moving assembly and a magnetic steel adsorption assembly connected to the output end of the moving assembly, and the moving assembly can drive the magnetic steel adsorption assembly to move. The magnetic steel adsorption assembly comprises a mounting seat, a magnetic suction seat and a plurality of magnetic expansion components, the mounting seat is connected to the output end of the moving assembly, one axial end of the magnetic suction seat is arranged on the mounting seat, the other axial end of the magnetic suction seat is a magnetic suction surface, and the magnetic suction surface is used for magnetically sucking a plurality of magnetic steels spliced into a ring; and the plurality of magnetic expansion parts are uniformly distributed at intervals along the circumferential direction of the magnetic attraction seat, are in one-to-one correspondence with the plurality of magnetic steels, penetrate through the magnetic attraction seat along the radial direction, extend to the inner ring of the magnetic attraction seat, and are used for pushing the magnetic steels outwards by a preset distance along the radial direction. According to the magnetic steel transfer mechanism, magnetic steel picking, magnetic steel transfer and magnetic expansion operation during back iron loading are completed through one set of mechanism, efficiency is high, and one set of mechanism is small in occupied space and relatively low in cost.

Description

Technical Field

[0001] The utility model relates to the technical field of motor rotor manufacturing, in particular to a magnet transfer mechanism and a rotor assembly device. Background Art

[0002] Axial magnetic field motors, also known as disk motors, have the advantages of small axial dimension, high torque density, high power density and high efficiency, and are widely used in fields such as electric vehicles, general industry and household appliances.

[0003] As Figure 1 shown, from the current structure of the disk motor rotor, the rotor 100 includes a back iron 101, magnets 102 and a pressing plate 103. The magnets 102 and the pressing plate 103 are alternately arranged on the back iron 101 to form an annular structure. The outer periphery of the back iron 101 has a protruding outer annular wall 104. In actual products, the radial outer side wall of the magnet 102 needs to abut against the inner side wall of the outer annular wall 104 to provide support for the magnet 102 in the working state of high-speed rotation of the rotor.

[0004] In the prior art, when the magnet 101 is inserted into the back iron 101, a plurality of magnets 102 assembled into a ring are mainly placed into the back iron 101 through a magnet transfer mechanism, and then an expanding magnetism mechanism is used for expanding magnetism treatment, that is, each magnet 102 is pushed radially outward by a certain distance so that the radial outer side wall of each magnet 102 abuts against the inner side wall of the outer annular wall 104. At this time, the operation of inserting the magnet 102 into the back iron 101 is completed. However, the above-mentioned magnet transfer mechanism and expanding magnetism mechanism are two separately arranged mechanisms, which are operated separately, with low efficiency, large space occupation of multiple mechanisms and high cost.

[0005] Therefore, there is an urgent need to provide a magnet transfer mechanism and a rotor assembly device to solve the above problems. Summary of the Utility Model

[0006] One object of the utility model is to provide a magnet transfer mechanism, which completes the operations of picking up, transferring and expanding magnetism when the magnet is inserted into the back iron through a set of mechanisms, with high efficiency, small space occupation of a set of mechanisms and relatively low cost.

[0007] Another object of the utility model is to provide a rotor assembly device, which can complete the operations of picking up, transferring and expanding magnetism of the magnet through a set of magnet transfer mechanisms, with high efficiency, small space occupation of a set of mechanisms and relatively low cost.

[0008] To achieve this purpose, the utility model adopts the following technical solutions:

[0009] The magnet steel transfer mechanism includes a moving component and a magnet steel adsorption component connected to the output end of the moving component. The moving component can drive the magnet steel adsorption component to move. The magnet steel adsorption component includes:

[0010] A mounting seat connected to the output end of the moving component;

[0011] A magnetic adsorption seat, one axial end of which is arranged on the mounting seat, and the other axial end is a magnetic adsorption surface for magnetically adsorbing a plurality of magnet steels assembled into a ring;

[0012] A plurality of magnetic field expanding components are circumferentially and evenly spaced along the magnetic adsorption seat and are arranged in one-to-one correspondence with the plurality of magnet steels. The magnetic field expanding components penetrate the magnetic adsorption seat in the radial direction and extend to the inner ring of the magnetic adsorption seat, and are used to push the magnet steel radially outward by a preset distance.

[0013] As an alternative solution, a plurality of limiting ribs are arranged on the magnetic adsorption surface at circumferential intervals. A pickup groove adapted to the shape of the magnet steel is formed between adjacent two limiting ribs, and each magnet steel is magnetically adsorbed in the corresponding pickup groove.

[0014] As an alternative solution, the magnetic field expanding component includes:

[0015] A magnetic field expanding cylinder fixed on the outer peripheral side of the magnetic adsorption seat;

[0016] A magnetic field expanding head connected to the output end of the magnetic field expanding cylinder. The magnetic field expanding head penetrates the magnetic adsorption seat in the radial direction and extends to the inner ring of the magnetic adsorption seat. The magnetic field expanding cylinder can drive the magnetic field expanding head to move radially outward along the magnetic adsorption seat, so that the magnetic field expanding head pushes the magnet steel radially outward by a preset distance.

[0017] As an alternative solution, an expanding convex part is formed at one end of the magnetic field expanding head. The expanding convex part protrudes towards the magnet steel and faces the inner peripheral side of the magnet steel.

[0018] As an alternative solution, a mounting plate is annularly arranged on the periphery of the mounting seat. A plurality of ejector pins are fixed on the mounting plate. The plurality of ejector pins are circumferentially and evenly spaced along the magnetic adsorption seat and are arranged in one-to-one correspondence with the plurality of magnet steels. The ejector pins penetrate the magnetic adsorption seat axially. The magnetic adsorption seat is arranged on the mounting seat in a liftable manner, so that the ejector pins extend out of the magnetic adsorption seat to separate the magnet steel from the magnetic adsorption surface, or the ejector pins are hidden in the magnetic adsorption seat.

[0019] As an alternative solution, an avoidance hole for the ejector pin to pass through is arranged on the magnetic field expanding head. The avoidance hole axially penetrates the magnetic field expanding head along the magnetic adsorption seat, and the radial dimension of the avoidance hole is larger than the radial dimension of the ejector pin.

[0020] As an alternative solution, it further includes a lifting drive assembly. The lifting drive assembly includes a lifting cylinder and a connecting member. The lifting cylinder is fixedly connected to the mounting plate and its output end faces the magnetic adsorption seat. One end of the connecting member is fixedly connected to the output end of the lifting cylinder, and the other end is fixedly connected to the periphery of the magnetic adsorption seat.

[0021] As an alternative solution, the number of the lifting drive assemblies is set to at least two groups, and at least two groups of the lifting drive assemblies are evenly arranged at intervals along the periphery of the mounting plate.

[0022] As an alternative solution, the moving assembly includes:

[0023] A bracket;

[0024] A first moving module disposed on the bracket; and

[0025] A second moving module connected to the output end of the first moving module. The first moving module is used to drive the second moving module to move in the horizontal direction. The magnetic steel adsorption assembly is connected to the output end of the second moving module, and the second moving module is used to drive the magnetic steel adsorption assembly to move in the vertical direction.

[0026] A rotor assembly device includes the above-mentioned magnetic steel transfer mechanism.

[0027] Advantages of the present utility model:

[0028] The present utility model provides a magnetic steel transfer mechanism. When performing the operation of inserting magnetic steel into the back iron, the magnetic adsorption surface of the magnetic adsorption seat first sucks a plurality of magnetic steels assembled into a ring by magnetic adsorption, and then the moving assembly drives the magnetic steel adsorption assembly to move, so as to drive the plurality of magnetic steels to move to the back iron station and align the plurality of magnetic steels with the back iron at the back iron station. Then the moving assembly drives the magnetic steel adsorption assembly to descend, so as to place the plurality of magnetic steels into the back iron. Finally, a plurality of magnetic field expanding components act simultaneously to push the plurality of magnetic steels radially outward by a preset distance, so that the radially outer side wall of the magnetic steel abuts against the inner side wall of the outer annular wall of the back iron, thereby providing support for the magnetic steel by the outer annular wall of the back iron in the working state of high-speed rotation of the rotor. At this time, the operation of inserting magnetic steel into the back iron is completed. This magnetic steel transfer mechanism completes the operations of picking up, transferring and expanding the magnetic field when inserting the magnetic steel into the back iron through a set of mechanisms, with high efficiency, and a set of mechanisms occupies a small space and has a relatively low cost.

[0029] The present utility model further provides a rotor assembly device. By setting the above-mentioned magnetic steel transfer mechanism, it can complete the operations of picking up, transferring and expanding the magnetic field when inserting the magnetic steel into the back iron through a set of magnetic steel transfer mechanisms, with high efficiency, and a set of mechanisms occupies a small space and has a relatively low cost. Description of the Drawings

[0030] Figure 1 is a schematic structural view of the rotor provided by the present utility model;

[0031] Figure 2 is a schematic structural view of the magnet transfer mechanism provided by the present utility model;

[0032] Figure 3 is a schematic structural view of the magnet adsorption assembly provided by the present utility model;

[0033] Figure 4 is Figure 3 a partial enlarged view of part A in

[0034] Figure 5 a sectional view of the magnet adsorption assembly provided by the present utility model.

[0035] In the figure:

[0036] 100, rotor; 101, back iron; 102, magnet; 103, pressing plate; 104, outer annular wall;

[0037] 20, magnet transfer mechanism; 21, moving assembly; 211, bracket; 212, first moving module; 213, second moving module; 22, magnet adsorption assembly; 221, mounting seat; 222, magnetic adsorption seat; 2221, magnetic adsorption surface; 2222, limiting rib; 2223, picking slot; 223, magnetic field expanding component; 2231, magnetic field expanding cylinder; 2232, magnetic field expanding press head; 2233, magnetic field expanding convex part; 2234, avoiding hole; 224, ejector pin; 225, lifting driving assembly; 2251, lifting cylinder; 2252, connecting piece; 226, positioning plate; 2261, positioning pin hole; 2262, caliper hole; 227, mounting plate. Specific embodiments

[0038] The present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present utility model, rather than limiting the present utility model. In addition, it should be noted that for the convenience of description, only parts related to the present utility model are shown in the drawings, rather than all the structures.

[0039] In the description of the present utility model, unless otherwise clearly defined and limited, the terms "connected", "connected", and "fixed" shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0040] In the present utility model, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through additional features therebetween. Moreover, the first feature being "above", "over" and "on top of" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "beneath" and "underneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely indicates that the horizontal height of the first feature is less than that of the second feature.

[0041] In the description of this embodiment, the orientation or positional relationships such as "up", "down", "right", etc. are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of description and simplifying the operation, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0042] Axial magnetic field motors, also known as disc motors, have the advantages of small axial dimensions, high torque density, high power density and high efficiency, and are widely used in fields such as electric vehicles, general industry and household appliances. As Figure 1 shown, the rotor 100 of the disc motor includes a back iron 101, a magnet 102 and a pressing plate 103. The magnets 102 and the pressing plates 103 are alternately arranged on the back iron 101 to form an annular structure. The outer periphery of the back iron 101 has a protruding outer annular wall 104. In actual products, the radial outer side wall of the magnet 102 abuts against the inner side wall of the outer annular wall 104 to provide support for the magnet 102 in the working state of the high-speed rotation of the rotor 100.

[0043] In the prior art, when the magnets 101 are inserted into the back iron 101, mainly through a magnet transfer mechanism, a plurality of assembled ring-shaped magnets 102 are placed into the back iron 101, and then an additional magnetization mechanism is used for magnetization processing, that is, each magnet 102 is pushed radially outward by a certain distance so that the radial outer side walls of the magnets 102 abut against the inner side walls of the outer annular wall 104. At this time, the operation of inserting the magnets 102 into the back iron 101 is completed. However, the above-mentioned magnet transfer mechanism and magnetization mechanism are two separately arranged mechanisms, which are operated separately, with low efficiency, large space occupation of multiple mechanisms and high cost.

[0044] To solve the above problems, as Figure 2 and Figure 3As shown in the figure, this embodiment provides a magnet transfer mechanism 20, which includes a moving component 21 and a magnet adsorption component 22 connected to the output end of the moving component 21. The moving component 21 can drive the magnet adsorption component 22 to move in the horizontal and vertical directions. The magnet adsorption component 22 includes a mounting seat 221, a magnetic adsorption seat 222, and a plurality of magnetic field expanding components 223. The mounting seat 221 is connected to the output end of the moving component 21; the magnetic adsorption seat 222 is annular, one axial end of the magnetic adsorption seat 222 is arranged on the mounting seat 221, and the other axial end of the magnetic adsorption seat 222 is a magnetic adsorption surface 2221, which is used to magnetically adsorb a plurality of magnets 102 assembled into a ring; the plurality of magnetic field expanding components 223 are evenly distributed at intervals along the circumferential direction of the magnetic adsorption seat 222 and are arranged in one-to-one correspondence with the plurality of magnets 102. The magnetic field expanding components 223 penetrate the magnetic adsorption seat 222 along the radial direction and extend to the inner ring of the magnetic adsorption seat 222, and are used to push the magnets 102 radially outward by a preset distance.

[0045] When performing the operation of inserting the magnet 102 into the back iron 101, the magnetic adsorption surface 2221 of the magnetic adsorption seat 222 faces downward, and a plurality of magnets 102 assembled into a ring are adsorbed at the previous station by magnetic adsorption. Among them, the outer diameter dimension of the annular body formed by the plurality of magnets 102 is smaller than the inner diameter of the outer annular wall 104, so as to avoid damage to the magnet 102 caused by the magnet 102 abutting against the edge of the outer annular wall 104 during the subsequent installation of the magnet 102 into the back iron 101; then the moving component 21 drives the magnet adsorption component 22 to move in the horizontal direction to drive the plurality of magnets 102 to move to the back iron station and align the plurality of magnets 102 with the back iron 101 at the back iron station. Then the moving component 21 drives the magnet adsorption component 22 to descend to place the plurality of magnets 102 into the back iron 101. Finally, the plurality of magnetic field expanding components 223 act simultaneously to push the plurality of magnets 102 radially outward by a preset distance, that is, to expand all the magnets 102 outward. This preset distance can ensure that after all the magnets 102 are expanded, the radially outer side wall of the magnet 102 abuts against the inner side wall of the outer annular wall 104 of the back iron 101, so as to provide support for the magnet 102 by the outer annular wall 104 of the back iron 101 in the working state of the high-speed rotation of the rotor 100. At this time, the operation of inserting the magnet 102 into the back iron 101 is completed. This magnet transfer mechanism 20 completes the operations of picking up, transferring, and expanding the magnetic field of the magnet 102 when it is inserted into the back iron 101 through a set of mechanisms, with high efficiency, and a set of mechanisms occupies a small space and has a relatively low cost.

[0046] It should be noted that at the back iron station, the back iron 101 is fixed by a corresponding carrier. The specific structure of the carrier is relatively common in the prior art and will not be elaborated here.

[0047] In an alternative embodiment, as Figure 2As shown in the figure, the moving component 21 includes a bracket 211, a first moving module 212, and a second moving module 213. The first moving module 212 is arranged on the bracket 211, and the second moving module 213 is connected to the output end of the first moving module 212. The first moving module 212 is used to drive the second moving module 213 to move horizontally. The magnet adsorption component 22 is connected to the output end of the second moving module 213, and the second moving module 213 is used to drive the magnet adsorption component 22 to move vertically. Through the horizontal movement of the first moving module 212, the magnet adsorption component 22 and multiple magnets 102 thereon can be driven to be transferred between different workstations. Through the lifting movement of the second moving module 213, the magnet 102 can be placed into the back iron 101. Among them, the above-mentioned horizontal direction refers to any direction within the horizontal plane, subject to the actual arrangement direction of multiple workstations. As long as the horizontal transfer between different workstations can be realized, no specific limitation is made here.

[0048] In this embodiment, the first moving module 212 preferably adopts a linear drive structure of a motor, lead screw, nut, and guide rail slider. Since the magnetic attraction of the magnet 102 is huge, when installing the magnet 102, the distance between the magnet 102 and the back iron 101 needs to be accurately controlled for magnetization expansion and assembly operations. Therefore, the second moving module 213 preferably adopts a linear drive structure of an electric cylinder and guide rail slider. Its specific structure is the prior art and will not be elaborated here.

[0049] In an alternative embodiment, as Figure 3 shown, a number of limiting ribs 2222 are evenly distributed at intervals along the circumference on the magnetic adsorption surface 2221. A pick-up groove 2223 adapted to the shape of the magnet 102 is formed between two adjacent limiting ribs 2222, and each magnet 102 is magnetically adsorbed in the corresponding pick-up groove 2223. The structural form of the limiting ribs 2222 arranged on the magnetic adsorption surface 2221 is designed to be similar to the back iron 101. The position of each magnet 102 in the corresponding pick-up groove 2223, that is, the position of the corresponding magnet 102 on the back iron 101. When magnetically adsorbing the magnet 102, each magnet 102 can be positioned by the limiting ribs 2222 on both sides of it, so as to ensure the accurate position of each magnet 102.

[0050] In an alternative embodiment, as Figure 3As shown, the magnetic expansion component 223 includes a magnetic expansion cylinder 2231 and a magnetic expansion head 2232. The magnetic expansion cylinder 2231 is fixed to the outer peripheral side of the magnetic attraction seat 222, and the magnetic expansion head 2232 is connected to the output end of the magnetic expansion cylinder 2231. The magnetic expansion head 2232 penetrates the magnetic attraction seat 222 in the radial direction and extends to the inner ring of the magnetic attraction seat 222. The magnetic expansion cylinder 2231 can drive the magnetic expansion head 2232 to move radially outward along the magnetic attraction seat 222, so that the magnetic expansion head 2232 pushes the magnet 102 radially outward by a preset distance. A plurality of magnetic expansion cylinders 2231 are arranged in a circumferential array on the circumferential outer side of the magnetic attraction seat 222, and a plurality of magnetic expansion heads 2232 penetrate the magnetic attraction seat 222 in the radial direction and are arranged in a circumferential array on the inner ring of the magnetic attraction seat 222, and are arranged in one-to-one correspondence with a plurality of pickup slots 2223. When the moving assembly 21 drives the magnet adsorption assembly 22 to descend to place a plurality of magnets 102 into the back iron 101, the output ends of the respective magnetic expansion cylinders 2231 retract, so that each magnetic expansion head 2232 radially outwardly pushes and presses its corresponding magnet 102 in place. By providing the above-mentioned magnetic expansion component 223, an automatic magnetic expansion operation can be realized, and the magnetic expansion efficiency can be improved.

[0051] In an optional embodiment, as Figure 4 shown, a magnetic expansion convex portion 2233 is formed at one end of the magnetic expansion head 2232. The magnetic expansion convex portion 2233 protrudes from the magnetic expansion head 2232 in the direction close to the magnet 102 and faces the inner peripheral side of the magnet 102. The magnetic expansion convex portion 2233 is specifically a thin edge structure formed at the end of the magnetic expansion head 2232. The magnetic expansion convex portion 2233 contacts the radial inner side wall of the magnet 102, so as to facilitate the magnetic expansion operation of the magnet 102.

[0052] Furthermore, the magnetic expansion head 2232 is made of a magnetic isolation material, such as plastic, rubber or other metals with a magnetic isolation effect. With such a setting, it can be avoided that when the magnetic expansion head 2232 pushes the magnet 102, a magnetic attraction effect is generated between the magnetic expansion head 2232 and the magnet 102, which affects the magnetic expansion operation.

[0053] In an optional embodiment, in combination with Figure 3 and Figure 5 , a mounting plate 227 is provided around the circumference of the mounting seat 221. A plurality of ejector pins 224 are fixed on the mounting plate 227. The plurality of ejector pins 224 are evenly spaced in the circumferential direction of the magnetic attraction seat 222 and are arranged in one-to-one correspondence with a plurality of magnets 102. The ejector pins 224 penetrate the magnetic attraction seat 222 in the axial direction. The magnetic attraction seat 222 is liftably arranged on the mounting seat 221, so that the ejector pins 224 extend out of the magnetic attraction seat 222 to separate the magnet 102 from the magnetic attraction surface 2221, or the ejector pins 224 are hidden inside the magnetic attraction seat 222. In combination with Figure 5 , it can be understood that during the magnetic expansion process, the magnet transfer mechanism 20 has been in Figure 5The posture in [the device] stays above the back iron 101, and the magnetization increasing operation is completed in the state where the magnetic steel 102 is attracted by the magnetic attraction surface 2221. After the magnetization increasing operation is completed, it is very difficult for the magnetic steel 102 to separate from the magnetic attraction surface 2221 by itself and stay together with the back iron 101. Therefore, after the magnetization increasing operation, the magnetic attraction seat 222 is lifted relative to the mounting seat 221, so that the ejector pin 224 extends out of the magnetic attraction seat 222 and pushes the magnetic steel 102, causing the magnetic steel 102 to separate from the magnetic attraction surface 2221 and adsorb on the back iron 101. After the magnetic steel 102 is pushed out, the magnetic attraction seat 222 descends relative to the mounting seat 221 again, so that the ejector pin 224 is retracted into the magnetic attraction seat 222 to wait for the next operation of pushing the magnetic steel 102.

[0054] Further, as Figure 5 shown, the magnetization increasing press head 2232 is provided with an avoidance hole 2234 for the ejector pin 224 to pass through. The avoidance hole 2234 axially penetrates the magnetization increasing press head 2232 along the axis of the magnetic attraction seat 222, and the radial dimension of the avoidance hole 2234 is larger than the radial dimension of the ejector pin 224. The radial dimension of the avoidance hole 2234 needs to ensure that when the magnetization increasing cylinder 2231 drives the magnetization increasing press head 2232 to move radially, the ejector pin 224 will not interfere with the magnetization increasing press head 2232.

[0055] In an optional embodiment, as Figure 3 and Figure 5 shown, the magnetic steel transfer mechanism 20 further includes a lifting drive assembly 225. The lifting drive assembly 225 includes a lifting cylinder 2251 and a connecting member 2252. The lifting cylinder 2251 is fixedly connected to the mounting plate 227 and its output end faces the magnetic attraction seat 222. One end of the connecting member 2252 is fixedly connected to the output end of the lifting cylinder 2251, and the other end is fixedly connected to the periphery of the magnetic attraction seat 222. Combining Figure 5 , with such a setting, after the magnetization increasing operation, the output end of the lifting cylinder 2251 retracts, thereby driving the connecting member 2252 to rise. The connecting member 2252 then drives the magnetic attraction seat 222 to rise, so that the ejector pin 224 extends out of the magnetic attraction seat 222 and pushes the magnetic steel 102 ( Figure 5 shows the state where the ejector pin 224 extends), causing the magnetic steel 102 to separate from the magnetic attraction surface 2221 and adsorb on the back iron 101. After the magnetic steel 102 is pushed out, the output end of the lifting cylinder 2251 extends to drive the connecting member 2252 to drive the magnetic attraction seat 222 to descend. At this time, the ejector pin 224 is retracted into the magnetic attraction seat 222 ( Figure 3 shows the state where the ejector pin 224 retracts). By setting the above-mentioned lifting drive assembly 225, the automatic lifting of the magnetic attraction seat 222 can be realized, and the degree of automation is improved.

[0056] In this embodiment, as Figure 5As shown, the number of lifting drive assemblies 225 is set to two groups, and the two groups of lifting drive assemblies 225 are evenly arranged at intervals along the circumferential side of the mounting plate 227. With this setting, it can be ensured that the magnetic seat 222 is evenly stressed and stable during the lifting process. In other embodiments, the number of lifting drive assemblies 225 can also be set to three groups, four groups or more groups, which can be flexibly set according to actual needs and will not be specifically limited here.

[0057] In an alternative embodiment, as Figure 3 shown, positioning plates 226 are fixedly connected to the radially opposite sides of the mounting plate 227 respectively. A positioning pin hole 2261 is formed at the free end of the positioning plate 226, and a caliper hole 2262 penetrates through the side surface of the positioning plate 226. As can be seen from the foregoing, on the back iron station, the back iron 101 is fixed by a corresponding carrier. Among them, the positioning pin hole 2261 is inserted and matched with the positioning pin on the carrier to ensure that the magnet 102 can be accurately aligned with the back iron 101; at the same time, in order to prevent the relative position of the magnet transfer mechanism 20 and the carrier from moving radially, the carrier is also hooked tightly in the caliper hole 2262 by a rotatable caliper on the carrier to maintain their clamped and locked state.

[0058] Combined with Figures 2 to 5 , the working process of the magnet transfer mechanism 20 is specifically as follows:

[0059] 1) The magnetic adsorption surface 2221 of the magnetic seat 222 faces downward, and a plurality of assembled ring magnets 102 are adsorbed at the previous station by magnetic adsorption, and one magnet 102 is adsorbed in each pickup groove 2223;

[0060] 2) The first moving module 212 drives the magnet adsorption assembly 22 and the plurality of magnets 102 thereon to move to the back iron station, and aligns the plurality of magnets 102 with the back iron 101 at the back iron station. Then, the second moving module 213 drives the magnet adsorption assembly 22 to descend until there is a small gap between the magnet 102 and the back iron 101, so as to prevent the magnet 102 from being adsorbed to the back iron 101 and affecting the magnetization expansion operation;

[0061] 3) The output ends of the magnetization expansion cylinders 2231 retract, so that the magnetization expansion protrusions 2233 of the magnetization expansion heads 2232 push the corresponding magnets 102 radially outward to the position, completing the magnetization expansion;

[0062] 4) Then, the second moving module 213 drives the magnet transfer mechanism 20 to continue to move downward until the magnet 102 is completely attached to the back iron 101. Then, the output end of the lifting cylinder 2251 retracts, and drives the magnetic seat 222 to rise through the connecting member 2252, so that the ejector pin 224 extends out of the magnetic seat 222 and presses the magnet 102, so that the magnet 102 is separated from the magnetic adsorption surface 2221 and remains on the back iron 101;

[0063] 5) After the permanent magnet 102 is pushed out, the output end of the lifting cylinder 2251 extends to drive the connecting member 2252 to drive the magnetic attraction seat 222 to descend, so that the thimble 224 is retracted into the magnetic attraction seat 222. Finally, the permanent magnet transfer mechanism 20 is removed.

[0064] This embodiment also provides a rotor assembly device, which mainly includes the above-mentioned permanent magnet transfer mechanism 20 and the back iron station. The permanent magnet transfer mechanism 20 transfers a plurality of assembled ring-shaped permanent magnets 102 to the back iron station. At the back iron station, the back iron 101 is fixed by a corresponding carrier. The permanent magnet transfer mechanism 20 is used to put a plurality of permanent magnets 102 into the back iron 101 and complete the magnetization increasing operation, so that the radial outer side walls of the permanent magnets 102 abut against the inner side wall of the outer ring wall 104, so as to provide support for the permanent magnets 102 by the outer ring wall 104 of the back iron 101 when the rotor 100 rotates at a high speed.

[0065] The rotor assembly device provided in this embodiment can complete the pickup, transfer and magnetization increasing operation when the permanent magnet 102 is loaded into the back iron 101 through a set of permanent magnet transfer mechanism 20 by setting the above-mentioned permanent magnet transfer mechanism 20, with high efficiency, small space occupation of a set of mechanisms and relatively low cost.

[0066] Obviously, the above embodiments of the present invention are only examples for clearly explaining the present invention, and are not limitations on the implementation manners of the present invention. For those of ordinary skill in the art, various obvious changes, re-adjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to enumerate all the implementation manners here. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. A magnetic steel transfer mechanism, characterized in that: The invention comprises a moving component (21) and a magnetic steel adsorption component (22) connected to the output end of the moving component (21), wherein the moving component (21) can drive the magnetic steel adsorption component (22) to move, and the magnetic steel adsorption component (22) comprises: A mounting seat (221) connected to the output end of the moving component (21); A magnetic seat (222), one axial end of which is arranged on the mounting seat (221), and the other axial end of which is a magnetic surface (2221), wherein the magnetic surface (2221) is used to magnetically attract a plurality of magnetic steels (102) assembled into a ring; A plurality of magnetic expansion components (223) are evenly spaced along the circumference of the magnetic seat (222) and are arranged one-to-one with the plurality of magnetic steels (102); the magnetic expansion components (223) radially penetrate the magnetic seat (222) and extend to the inner ring of the magnetic seat (222), and are used to push the magnetic steel (102) radially outward by a preset distance.

2. The magnetic steel transfer mechanism according to claim 1, characterized in that: The magnetic attraction surface (2221) is provided with a plurality of limiting ribs (2222) evenly spaced along its circumference, and a pickup groove (2223) adapted to the shape of the magnetic steel (102) is formed between two adjacent limiting ribs (2222), and each magnetic steel (102) is magnetically attracted in the corresponding pickup groove (2223).

3. The magnetic steel transfer mechanism according to claim 1, characterized in that: The magnetic expansion component (223) comprises: A magnetic expansion cylinder (2231) is fixed to the outer peripheral side of the magnetic suction seat (222); The magnetic expansion pressure head (2232) is connected to the output end of the magnetic expansion cylinder (2231), and the magnetic expansion pressure head (2232) radially penetrates the magnetic suction seat (222) and extends to the inner ring of the magnetic suction seat (222). The magnetic expansion cylinder (2231) can drive the magnetic expansion pressure head (2232) to move radially outward along the magnetic suction seat (222), so that the magnetic expansion pressure head (2232) pushes the magnetic steel (102) radially outward by a preset distance.

4. The magnetic steel transfer mechanism according to claim 3, characterized in that: A magnetic expansion convex portion (2233) is formed at one end of the magnetic expansion pressure head (2232), and the magnetic expansion convex portion (2233) protrudes from the magnetic expansion pressure head (2232) in a direction close to the magnetic steel (102) and faces the inner peripheral side of the magnetic steel (102).

5. The magnetic steel transfer mechanism according to claim 3 or 4, characterized in that: The mounting seat (221) is provided with a mounting plate (227) on the circumferential side ring, and a plurality of ejector pins (224) are fixed on the mounting plate (227). The plurality of ejector pins (224) are evenly spaced along the circumference of the magnetic seat (222) and correspond one to one with the plurality of magnetic steels (102). The ejector pins (224) are axially penetrated in the magnetic seat (222), and the magnetic seat (222) is movably arranged on the mounting seat (221), so that the ejector pins (224) extend out of the magnetic seat (222) to separate the magnetic steel (102) from the magnetic surface (2221), or the ejector pins (224) are hidden in the magnetic seat (222).

6. The magnetic steel transfer mechanism according to claim 5, characterized in that: The magnetic expansion pressure head (2232) is provided with an avoidance hole (2234) for the ejector pin (224) to pass through, the avoidance hole (2234) penetrates the magnetic expansion pressure head (2232) along the axial direction of the magnetic suction seat (222), and the radial dimension of the avoidance hole (2234) is greater than the radial dimension of the ejector pin (224).

7. The magnetic steel transfer mechanism according to claim 5, characterized in that: It also includes a lifting drive assembly (225), the lifting drive assembly (225) including a lifting cylinder (2251) and a connecting piece (2252), the lifting cylinder (2251) is fixedly connected to the mounting plate (227) and its output end faces the magnetic seat (222), one end of the connecting piece (2252) is fixedly connected to the output end of the lifting cylinder (2251), and the other end is fixedly connected to the peripheral side of the magnetic seat (222).

8. The magnetic steel transfer mechanism according to claim 7, characterized in that: The number of the lifting drive components (225) is set to at least two groups, and the at least two groups of the lifting drive components (225) are evenly spaced along the circumference of the mounting plate (227).

9. The magnetic steel transfer mechanism according to any one of claims 1 to 4, characterized in that: The moving component (21) comprises: Bracket (211); A first movable module (212) is arranged on the support (211); and The second movable module (213) is connected to the output end of the first movable module (212), and the first movable module (212) is used to drive the second movable module (213) to move in a horizontal direction. The magnetic steel adsorption component (22) is connected to the output end of the second movable module (213), and the second movable module (213) is used to drive the magnetic steel adsorption component (22) to move in a vertical direction.

10. A rotor assembly device, characterized in that: It comprises a magnetic steel transfer mechanism as described in any one of claims 1 to 9.

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