Motor rotor permanent magnet tamping device

Abstract

The utility model relates to a motor rotor permanent magnet tamping device, which comprises a rack, a fixed seat is arranged on the rack, the fixed seat is used for placing a surface embedded permanent magnet rotor, a pressing mechanism is arranged on the rack, and the pressing mechanism is used for pressing a permanent magnet on the surface embedded permanent magnet rotor. After the surface embedded permanent magnet rotor is fixedly placed on the fixing seat, the blocky permanent magnets are sequentially installed in the correct direction and are filled into the embedding grooves of the surface embedded permanent magnet rotor, at the moment, due to repulsive force between the permanent magnets, the permanent magnets are separated from one another, the uppermost permanent magnet protrudes out of the embedding grooves, the pressing mechanism is started at the moment, and the permanent magnets are tightly pressed. The pressing mechanism simultaneously and completely presses all the permanent magnets into the embedding grooves, then the permanent magnets are fixed to the rotor to complete installation of the permanent magnets, compared with a manual installation mode, installation is more labor-saving through the device, the pressing-in efficiency of pressing in the permanent magnets is higher, and the installation efficiency of the permanent magnets is improved. The purposes of labor saving and high efficiency in permanent magnet installation are achieved.

Description

Technical Field

[0001] This application relates to the field of motor rotor manufacturing equipment, and particularly to a device for pressing permanent magnets on a motor rotor. Background Art

[0002] The permanent magnets on a motor rotor can be installed on the surface of the rotor core or embedded inside the rotor core. Among them, the permanent magnets installed on the surface of the rotor core are further divided into two installation methods. One is a surface-protruding permanent magnet rotor, where an arc-shaped plate-like permanent magnet is adhesively covered and installed on the outer wall of the rotor core; the other is a surface-embedded permanent magnet rotor, where an embedding groove is provided on the outer surface of the rotor core, and the permanent magnet is embedded on the outer surface of the rotor core.

[0003] Due to the limitation of the embedding groove, multiple permanent magnets can be used for assembly instead of a whole permanent magnet in a single embedding groove, with a lower cost. When the permanent magnet breaks later, the maintenance cost is also lower. However, when installing the permanent magnet, the traditional method of manual insertion is laborious and inefficient, and it cannot adapt to mass production. Therefore, there is an urgent need for a device that can automatically press the permanent magnet. Summary of the Utility Model

[0004] In order to solve the problem of low installation efficiency of installing permanent magnets on a surface-embedded permanent magnet rotor through traditional manual methods, this application provides a device for pressing permanent magnets on a motor rotor.

[0005] A device for pressing permanent magnets on a motor rotor provided by this application adopts the following technical solution:

[0006] A device for pressing permanent magnets on a motor rotor includes a frame. A fixed seat is provided on the frame, and the fixed seat is used to place a surface-embedded permanent magnet rotor. A pressing mechanism is provided on the frame, and the pressing mechanism is used to press the permanent magnet onto the surface-embedded permanent magnet rotor.

[0007] Through the above technical solution, after the surface-embedded permanent magnet rotor is fixedly placed on the fixed seat, the block-shaped permanent magnets are filled into the embedding grooves of the surface-embedded permanent magnet rotor in the correct direction in sequence. At this time, due to the repulsive force between the permanent magnets, the permanent magnets are separated from each other, and the uppermost permanent magnet protrudes from the embedding groove. At this time, the pressing mechanism is started, and the pressing mechanism presses all the permanent magnets into the embedding grooves simultaneously and completely. Then, the permanent magnet is fixed to the rotor to complete the installation of the permanent magnet. Compared with the manual installation method, through the above device for installation, it is more labor-saving during installation, and the pressing efficiency of pressing the permanent magnet is higher, achieving the purpose of labor-saving and efficient installation of the permanent magnet.

[0008] Optionally, a workbench is horizontally and rotatably installed on the frame. The workbench rotates around its axis. There are multiple fixing seats, which are circumferentially spaced and installed on the workbench around the rotation axis of the workbench. Multiple maintaining mechanisms corresponding to the fixing seats one by one are arranged on the workbench. The maintaining mechanism is used to maintain the pressed state of the permanent magnet pressed into the embedding groove of the rotor by the pressing mechanism.

[0009] Optionally, the pressing mechanism includes a pressing cylinder installed on the frame. The piston rod of the pressing cylinder extends and retracts vertically downward. The vertical projection of the axis of the piston rod of the pressing cylinder is located on the circle where the center point of the fixing seat is located. The pressing mechanism further includes multiple first pressing plates vertically slidably installed on the frame. The first pressing plates correspond to the fixing seats one by one and are located directly above the fixing seats. The pressing cylinder is located above the first pressing plates. When the fixing seat and the first pressing plate rotate to below the pressing cylinder, the pressing cylinder extends to abut against the first pressing plate, and the first pressing plate abuts against and fits the top wall of the motor rotor and the top wall of the permanent magnet.

[0010] Optionally, several mounting brackets corresponding to the first pressing plates one by one are arranged on the workbench. The first pressing plates are installed on the mounting brackets. A push plate is further arranged on the mounting brackets. The push plate is used to cooperate with the piston rod of the pressing cylinder to push the mounting bracket and the first pressing plate to move. The push plate is detachably installed on the mounting bracket, and the distance between the push plate and the first pressing plate is adjustable.

[0011] Through the above technical solution, the operation of pressing the permanent magnet into the motor rotor with different heights can be realized by adjusting the distance between the push plate and the first pressing plate.

[0012] Optionally, the mounting bracket includes a sliding rod and a fixing rod. The sliding rod is vertically slidably installed on the workbench. The first pressing plate is detachably installed at the lower end of the sliding rod. The fixing rod is installed on the first pressing plate. The fixing rod and the sliding rod are parallel. The push plate is detachably installed at the upper end of the fixing rod. The upper end of the sliding rod is detachably connected to the push plate.

[0013] Through the above technical solution, when the distance between the push plate and the first pressing plate needs to be adjusted, the sliding rod and the fixing rod are detached from between the push plate and the first pressing plate, and then the sliding rod and the fixing rod with appropriate lengths are replaced to complete the adjustment of the distance between the push plate and the first pressing plate.

[0014] Optionally, the holding mechanism includes holding cylinders detachably mounted on the workbench. The holding cylinders correspond to the fixed seats one by one and are all located directly above the fixed seats. On the workbench, there are brackets corresponding to the holding cylinders one by one. Along the vertical direction, a number of pairs of mounting holes are evenly spaced on the brackets. The holding cylinders are detachably mounted on the brackets by bolts. The pressing cylinder is located above the holding cylinders. The piston rods of the holding cylinders extend vertically downward. After the piston rods of the holding cylinders extend out, they abut against the first pressing plate.

[0015] Optionally, a second pressing plate is provided on the piston rod of the holding cylinder. The holding cylinder abuts against the first pressing plate through the second pressing plate. On the surface of the first pressing plate facing away from the fixed seat, there is a magnetic metal plate. On the surface of the second pressing plate facing the first pressing plate, there is a magnet embedded.

[0016] Optionally, the cross-section of the sliding rod is polygonal. On the surface of the pushing plate facing away from the second pressing plate, there is a magnet embedded. At one end of the piston rod of the pressing cylinder, there is a magnetic metal block sleeved. The vertical projection of the magnetic metal block is located on the magnet on the pushing plate.

[0017] In summary, after the staff puts the permanent magnet into the embedding groove on the outer surface of the surface-embedded permanent magnet rotor, through the present application, the permanent magnet can be filled and pressed into the embedding groove of the surface-embedded permanent magnet rotor relatively stably and quickly. At the same time, due to the holding function of the stabilizing cylinder, it is not necessary to fix the permanent magnet at the same station. The surface-embedded permanent magnet rotor after being loaded can be rotated to the next process for processing. At the same time, since there are multiple fixed seats, the reinforcement process of the permanent magnet can be divided into multiple steps and carried out synchronously. The overall production is in a pipeline state and the production efficiency is relatively high. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a three-dimensional structural schematic diagram of the present application. The mounting holes and the drive motor are not shown in the figure.

[0019] Figure 2 is a cross-sectional schematic diagram of the mounting frame of the present application.

[0020] Those skilled in the art will understand that the elements in the drawings are shown for simplicity and clarity and are not necessarily drawn to scale. For example, the sizes and positions of some elements in the drawings may be enlarged relative to other elements to help improve the understanding of the embodiments of the present invention.

[0021] Reference numerals: 1, frame; 2, workbench; 3, fixed seat; 4, pressing mechanism; 41, pressing cylinder; 42, first pressing plate; 43, mounting bracket; 431, sliding rod; 432, fixed rod; 44, push plate; 5, maintaining mechanism; 51, maintaining cylinder; 52, bracket; 53, second pressing plate; 6, magnetic metal plate; 7, magnetic metal block; 8, magnet; 9, surface-embedded permanent magnet rotor. Embodiment

[0022] The following further elaborates on this application in conjunction with the attached Figure 1-2 drawings.

[0023] An embodiment of this application discloses a device for pressing permanent magnets of a motor rotor. Referring to Figure 1 , it includes a frame 1. A disc-shaped workbench 2 is rotatably installed on the top wall of the frame 1. A driving motor is fixedly installed on the frame 1, and the driving motor is in transmission connection with the workbench 2 to drive the workbench 2 to rotate. Twelve fixed seats 3 are fixedly installed on the outer side of the top wall of the workbench 2. The fixed seats 3 are circular and are evenly spaced around the axis of the workbench 2. The fixed seats 3 are in interference fit with one end of the surface-embedded permanent magnet rotor 9. When loading the permanent magnet, one end of the surface-embedded permanent magnet rotor 9 is inserted into the fixed seat 3 for fixation.

[0024] Referring to Figure 1 , a pressing mechanism 4 and a maintaining mechanism 5 are provided on the frame 1. The pressing mechanism 4 includes a pressing cylinder 41 fixedly installed on the frame 1. The piston rod of the pressing cylinder 41 extends vertically downward, and the vertical axis of the piston rod of the pressing cylinder 41 intersects the circle formed by the axis of the fixed seat 3.

[0025] Referring to Figure 1 , the maintaining mechanism 5 includes twelve brackets 52. The twelve brackets 52 are all vertically placed, and the lower ends of the twelve brackets 52 are welded to the top wall of the workbench 2. A metal ring is provided at the upper end of the bracket 52, and the metal ring is welded to the upper end of the bracket 52. The brackets 52 are connected to each other through the metal ring. The twelve brackets 52 correspond to the twelve fixed seats 3 one by one. A maintaining cylinder 51 is fixedly installed on the bracket 52 through bolts. The piston rod of the maintaining cylinder 51 also extends vertically downward. The piston rod of the maintaining cylinder 51 is coaxial with the axis of the fixed seat 3, and the maintaining cylinder 51 is located directly above the fixed seat 3.

[0026] At the same time, a plurality of pairs of mounting holes are vertically formed on the bracket 52, and the maintaining cylinder 51 is adjusted in height by being installed in different mounting holes.

[0027] Referring to Figure 1 and Figure 2, a horizontal first pressing plate 42 is provided between the maintaining cylinder 51 and the fixed seat 3. The maintaining cylinder 51 is a double-rod piston cylinder. A horizontal second pressing plate 53 is fixedly installed at one end of each of the two piston rods of the maintaining cylinder 51 by bolts. A magnetic metal plate 6, which is an iron plate in this application, is fixedly installed on the top wall of the first pressing plate 42. A magnet 8 is fixedly installed on the bottom wall of the second pressing plate 53. The first pressing plate 42 is fixed to the first pressing plate 42 by the mutual adsorption between the iron plate and the magnet 8.

[0028] Refer to Figure 1 and Figure 2 , a sliding rod 431 and a fixing rod 432 are detachably installed on the top wall of the first pressing plate 42 by bolts. The cross-section of the sliding rod 431 is regular hexagonal. The sliding rod 431 and the fixing rod 432 are parallel to each other and both are vertical. A vertical chute is provided on the bracket 52. The upper and lower ends of the chute penetrate through the bracket 52. The chute is in sliding fit with the sliding rod 431, and the sliding rod 431 is slidably installed in the chute. The fixing rod 432 is slidably fitted to the side wall of the maintaining cylinder 51. A push plate 44 is fixedly installed at the upper ends of the sliding rod 431 and the fixing rod 432 by bolts. The sliding rod 431 is limited by the fixing rod 432 and the push plate 44, so that the sliding rod 431, the fixing rod 432, the push plate 44 and the first pressing plate 42 are slidably installed on the bracket 52.

[0029] Refer to Figure 1 and Figure 2 , when the workbench 2 rotates to the position where the surface-embedded permanent magnet rotor 9 that needs to be filled with a permanent magnet is directly below the pressing cylinder 41, the operator starts the pressing cylinder 41. The piston rod of the pressing cylinder 41 extends out and presses against the push plate 44. Then, the first pressing plate 42 is pushed by the push plate 44 to separate from the second pressing plate 53. Furthermore, the permanent magnet is pressed into the embedding groove of the surface-embedded permanent magnet rotor 9 by the first pressing plate 42. Then, the maintaining cylinder 51 is started. The piston rod of the maintaining cylinder 51 extends out and presses against the first pressing plate 42 through the second pressing plate 53, pressing the permanent magnet tightly and holding it in the surface-embedded permanent magnet rotor 9. Then, the workbench 2 rotates to the next fixed seat 3 facing the pressing cylinder 41 to perform the permanent magnet filling for the next surface-embedded permanent magnet rotor 9.

[0030] Refer to Figure 1 and Figure 2 , after the surface-embedded permanent magnet rotor 9 with the already filled permanent magnet rotates to the next permanent magnet fixing station for permanent magnet fixing, the piston rod of the maintaining cylinder 51 is retracted. The first pressing plate 42 adsorbed on the second pressing plate 53 by the magnet 8 also rises accordingly. Then, the operator removes the rotor.

[0031] Refer to Figure 1 and Figure 2, since the upward movement of the second pressing plate 53 drives the first pressing plate 42 to rise synchronously, the first pressing plate 42 will not obstruct the subsequent placement of the rotor. At the same time, a magnet 8 is also embedded on the top wall of the push plate 44, and an iron push block is fixedly sleeved on the lower end of the piston rod of the pressing cylinder 41. The push block can be made of other magnetic metals. The push plate 44 is adsorbed on the push block through the cooperation with the magnet 8.

[0032] Refer to Figure 1 and Figure 2 , the cylinders in the above solution all adopt slow-extending cylinders, and the push plate 44 is adsorbed on the push block of the piston rod of the pressing cylinder 41 through the magnet 8. Therefore, when filling and pressing the permanent magnet, the impact force caused by the first pressing plate 42 on the permanent magnet is small, and the permanent magnet is not easily broken due to excessive impact.

[0033] The implementation principle of a permanent magnet filling and pressing device for a motor rotor in an embodiment of the present application is as follows: After rotating the workbench 2 until the empty fixing seat 3 is located directly below the pressing cylinder 41, place the rotor on the fixing seat 3, and then load the permanent magnets one by one into the embedding grooves of the rotor. At this time, under the repulsive force, the permanent magnets are separated from each other. Start the pressing cylinder 41, and the piston rod of the pressing cylinder 41 extends until the magnetic metal block 7 and the push plate 44 are attracted to each other through the magnet 8, and then push the push plate 44 to move, pushing the first pressing plate 42 to separate from the second pressing plate 53, and then pushing the first pressing plate 42 to press the permanent magnet into the embedding groove of the rotor. At this time, start the cylinder 51 to extend the piston rod, and then push the second pressing plate 53 to move until it fits and presses against the first pressing plate 42. The pressing cylinder 41 resets, and the magnetic metal block 7 and the push plate 44 are separated. The workbench 2 rotates to bring the next empty fixing seat 3 directly below the pressing cylinder 41 for the next round of operation.

[0034] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A permanent magnet filling device for a motor rotor, characterized in that: The invention comprises a frame (1), wherein a fixing seat (3) is provided on the frame (1), and the fixing seat (3) is used to place a surface-embedded permanent magnet rotor (9); and a pressing mechanism (4) is provided on the frame (1), and the pressing mechanism (4) is used to press the permanent magnet onto the surface-embedded permanent magnet rotor (9).

2. The motor rotor permanent magnet pressing device according to claim 1, characterized in that: A workbench (2) is horizontally rotatably mounted on the frame (1), and the workbench (2) rotates around its axis. A plurality of fixing seats (3) are provided, and the fixing seats (3) are circumferentially spaced and mounted on the workbench (2) around the rotation axis of the workbench (2). A plurality of maintaining mechanisms (5) corresponding to the fixing seats (3) are provided on the workbench (2), and the maintaining mechanisms (5) are used to maintain the pressed state of the permanent magnets in the embedded slots of the rotor when the clamping mechanism (4) presses the permanent magnets.

3. The motor rotor permanent magnet pressing device according to claim 2, characterized in that: The clamping mechanism (4) includes a clamping cylinder (41) mounted on the frame (1), the piston rod of the clamping cylinder (41) is extended and retracted vertically downward, and the vertical projection of the axis of the piston rod of the clamping cylinder (41) is located on the circle where the axis point of the fixed seat (3) is located. The clamping mechanism (4) also includes a plurality of No. 1 pressure plates (42) mounted vertically on the frame (1) for sliding movement, the No. 1 pressure plates (42) corresponding to the fixed seat (3) one by one and located directly above the fixed seat (3), the clamping cylinder (41) is located above the No. 1 pressure plate (42), and when the fixed seat (3) and the No. 1 pressure plate (42) rotate to the bottom of the clamping cylinder (41), the clamping cylinder (41) extends out and presses against the No. 1 pressure plate (42), and the No. 1 pressure plate (42) is in contact with the top wall of the motor rotor and the top wall of the permanent magnet.

4. The motor rotor permanent magnet pressing device according to claim 3, characterized in that: The workbench (2) is provided with a plurality of mounting frames (43) corresponding to the No. 1 pressure plate (42), and the No. 1 pressure plate (42) is mounted on the mounting frame (43). The mounting frame (43) is also provided with a push plate (44), and the push plate (44) is used to cooperate with the piston rod of the clamping cylinder (41) to push the mounting frame (43) and the No. 1 pressure plate (42) to move. The push plate (44) is detachably mounted on the mounting frame (43), and the distance between the push plate (44) and the No. 1 pressure plate (42) is adjustable.

5. The motor rotor permanent magnet pressing device according to claim 4, characterized in that: The mounting frame (43) includes a sliding rod (431) and a fixed rod (432), the sliding rod (431) is vertically slidably mounted on the workbench (2), the No. 1 pressure plate (42) is detachably mounted on the lower end of the sliding rod (431), the fixed rod (432) is mounted on the No. 1 pressure plate (42), the fixed rod (432) and the sliding rod (431) are parallel, the push plate (44) is detachably mounted on the upper end of the fixed rod (432), and the upper end of the sliding rod (431) is detachably connected to the push plate (44).

6. The motor rotor permanent magnet pressing device according to claim 4, characterized in that: The maintaining mechanism (5) includes a maintaining cylinder (51) detachably mounted on the workbench (2), the maintaining cylinder (51) corresponding to the fixing seat (3) one by one and both located directly above the fixing seat (3), a bracket (52) corresponding to the maintaining cylinder (51) one by one is provided on the workbench (2), a plurality of pairs of mounting holes are evenly spaced apart in the vertical direction on the bracket (52), the maintaining cylinder (51) is detachably mounted on the bracket (52) by bolts, the pressing cylinder (41) is located above the maintaining cylinder (51), the piston rod of the maintaining cylinder (51) is vertically extended and retracted downward, and the piston rod of the maintaining cylinder (51) is extended and pressed against the No. 1 pressure plate (42).

7. The motor rotor permanent magnet pressing device according to claim 6, characterized in that: A second pressure plate (53) is provided on the piston rod of the maintaining cylinder (51), and the maintaining cylinder (51) is pressed against the first pressure plate (42) through the second pressure plate (53). A magnetic metal plate (6) is provided on the side of the first pressure plate (42) facing away from the fixing seat (3), and a magnet (8) is embedded on the side of the second pressure plate (53) facing the first pressure plate (42).

8. The motor rotor permanent magnet pressing device according to claim 5, characterized in that: The cross section of the sliding rod (431) is polygonal.

9. The motor rotor permanent magnet pressing device according to claim 7, characterized in that: A magnet (8) is embedded on the side of the push plate (44) facing away from the second pressure plate (53), and a magnetic metal block (7) is sleeved on one end of the piston rod of the pressing cylinder (41), and the vertical projection of the magnetic metal block (7) is located on the magnet (8) on the push plate (44).

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