An assembly tool and assembly method for a motor rotor

Abstract

This application discloses an assembly fixture and method for an electric motor rotor, relating to the field of electric motor assembly technology. The assembly fixture includes a support and a first and second pushing assembly mounted on the support. The support has an assembly station for mounting the iron core of the electric motor rotor. The first pushing assembly moves vertically and has multiple first pushing parts at its upper end, each first pushing part being used to pass upward through a corresponding slot on the iron core. The second pushing assembly moves vertically and is used to move downward to abut against the upper ends of the magnets of the electric motor rotor, and is also used to move downward synchronously with the first pushing assembly to push each magnet into its corresponding slot. According to the assembly fixture for the electric motor rotor disclosed in this application, the second pushing assembly cooperates with the first pushing parts on the first pushing assembly to press the magnets together, and synchronously moves to push each magnet into its corresponding slot, making insertion easier, significantly reducing wear, and facilitating batch operation.

Description

Technical Field

[0001] This application belongs to the field of motor assembly technology, specifically an assembly tooling and assembly method for a motor rotor. Background Technology

[0002] A permanent magnet synchronous motor (PMSM) is a synchronous motor that uses permanent magnets to generate a magnetic field. It boasts advantages such as high efficiency, excellent dynamic response, and low noise, and is widely used in electric vehicles, robotics, and other fields. The rotor of a PMSM is primarily composed of an iron core and magnets; in an internal structure, the magnets are inserted into slots within the iron core.

[0003] Because of the strong magnetic attraction between the magnet and the iron core, inserting the magnet presents two challenges: firstly, it is difficult to insert it correctly, and secondly, it can easily damage the inner insulation surface of the slot. Related technologies use simple tooling to push the magnet into the slot. However, during installation, the magnet is still easily attracted to the inner wall of the slot, making operation difficult and controllable, which is not conducive to mass production. This problem urgently needs to be solved. Summary of the Invention

[0004] The purpose of this application is to provide an assembly fixture and assembly method for an electric motor rotor, which makes it easier, at least to a certain extent, to insert the magnet into the slot of the iron core, facilitates mass production operations, and thus improves the assembly efficiency of the motor.

[0005] To achieve the above objectives, this application provides the following technical solution: In a first aspect, this application provides an assembly tooling for a motor rotor. The motor rotor includes an iron core and a plurality of magnets. The iron core has a plurality of slots that pass through both ends. Each magnet is inserted into a corresponding slot. The assembly tooling for the motor rotor includes a support and a first pushing component and a second pushing component disposed on the support. The support has an assembly station for placing the iron core; The first push assembly moves vertically and has multiple first push parts at its upper end, each of which is used to pass upward through the corresponding slot. The second pusher assembly moves vertically and is used to move downward to abut against the upper end of each magnet, and is also used to move downward synchronously with the first pusher assembly to push each magnet into its corresponding slot.

[0006] As a further embodiment of this application, it also includes: multiple connecting components, with a transverse partition on the support, an assembly station located on the transverse partition, and each first pushing part passing through the transverse partition; The connecting assembly includes a connecting rod and an elastic element. The connecting rod is vertically slidably connected to the transverse partition, and its upper end is fixedly connected to the second jacking assembly. The first jacking assembly is vertically slidably connected to the lower end of the connecting rod. The elastic element is connected to the first jacking assembly and the connecting rod respectively, so as to provide a preset elastic force when the second jacking assembly cooperates with each of the first jacking parts to press the corresponding magnet.

[0007] As a further embodiment of this application, the first push assembly includes a first mounting plate and a plurality of first push plates connected to the first mounting plate. The first mounting plate is vertically slidably connected to the lower end of the connecting rod. Each first push plate is arranged at intervals around the center of the assembly station. The first push part is located on the first push plate. The second jacking assembly includes a second mounting plate and multiple second jacking plates connected to the second mounting plate. The second mounting plate is fixed to the upper end of the connecting rod. Each second jacking plate is arranged at intervals around the center of the assembly station. The lower end of the second jacking plate is used to press against the upper end of the corresponding magnet.

[0008] As a further embodiment of this application, it also includes a material tray located between the first mounting plate and the second mounting plate, the material tray moving in a vertical direction and having a plurality of pre-positioning holes thereon; Each prepositioning hole is used to insert a magnet and corresponds to each of the first push parts. The lower end of the second push plate is used to pass downward through the corresponding prepositioning hole.

[0009] As a further embodiment of this application, a driving component is also included, which is connected to the second mounting plate in a transmission manner to drive the second mounting plate to rise and fall.

[0010] As a further embodiment of this application, the end of the magnet has a positioning groove, and the adjacent ends of the first pushing part and the second pushing assembly have positioning protrusions, which are used to connect with the positioning groove.

[0011] As a further embodiment of this application, the iron core has a shaft hole and the support is provided with a central shaft; The central shaft is located at the assembly station and is used for positioning and mating with the shaft hole.

[0012] As a further embodiment of this application, a plurality of glue outlets are provided on the upper periphery of the first push part, and the interior of the first push part has a glue supply channel communicating with each glue outlet. A retaining ring is also provided on the upper periphery of the first push part. The retaining ring is located below each glue outlet and is used to elastically abut against the inner wall of the corresponding slot.

[0013] As a further embodiment of this application, a plurality of return ports are provided on the upper periphery of the first push part, and the interior of the first push part has a return channel communicating with each return port, and each return port is located above each outlet port. A glue control ring is also provided on the upper periphery of the first push part. The glue control ring is located above each glue return port and is used to leave a preset gap between itself and the inner wall of the corresponding slot.

[0014] Secondly, this application provides an assembly method for an electric motor rotor, applicable to any of the assembly fixtures for electric motor rotors provided in the first aspect, the method comprising: Place the iron core at the assembly station and push the first pusher upward through the corresponding slot; The lower ends of each magnet are placed against the corresponding first pushing part, and the second pushing assembly is driven to move down to abut against the upper ends of each magnet. The second and first pusher components are then driven to move down synchronously to push each magnet into its corresponding slot.

[0015] According to this application, an assembly fixture and assembly method for a motor rotor are provided, which have at least the following technical effects. The assembly fixture for the motor rotor includes a support and a first pushing assembly and a second pushing assembly disposed on the support. An assembly station for placing an iron core is provided on the support. The first pushing assembly is set to move vertically and has multiple first pushing parts at its upper end. Each first pushing part is used to pass upward through a corresponding slot. The second pushing assembly is set to move vertically and is used to move downward to abut against the upper end of each magnet. It is also used to move downward synchronously with the first pushing assembly to push each magnet into its corresponding slot.

[0016] Therefore, according to the motor rotor assembly tooling provided in this application, the second pushing assembly cooperates with the first pushing part on the first pushing assembly to press the magnets, and moves synchronously to push each magnet into each slot, so that the magnets do not contact the inner wall of the slot during insertion as much as possible, which makes it easier to insert and place them in place, and can greatly reduce wear, facilitate batch operation, and thus improve the assembly efficiency of the motor. Attached Figure Description

[0017] To facilitate understanding by those skilled in the art, the present application will be further described below with reference to the accompanying drawings.

[0018] Figure 1 This is a top view of the rotor structure of an electric motor in the prior art; Figure 2 This is a schematic diagram of the main cross-sectional structure of the assembly tooling for the motor rotor provided in the embodiments of this application; Figure 3 for Figure 2 A magnified view of a section at point A in the middle; Figure 4 for Figure 3 A sectional view along section BB; Figure 5 for Figure 3 A sectional view along the CC section; Figure 6 for Figure 3 A partial internal structure diagram of the first jacking plate; Figure 7This is a schematic diagram of the main cross-sectional structure of the motor rotor assembly tooling provided in the embodiments of this application in its first state of use; Figure 8 for Figure 7 A magnified view of a section at point D; Figure 9 for Figure 8 A magnified view of a section at point E in the middle; Figure 10 This is a schematic diagram of the main cross-sectional structure of the motor rotor assembly tooling provided in the embodiments of this application in the second state of use; Figure 11 This is a schematic diagram of the main cross-sectional structure of the motor rotor assembly tooling provided in the embodiments of this application in the third state of use; Figure 12 A flowchart illustrating the assembly method of the motor rotor provided in this application embodiment.

[0019] Figure label: 10. Iron core; 11. Slot; 12. Shaft hole; 20. Magnet; 21. Positioning groove; 100. Support; 101. Assembly station; 102. Transverse diaphragm; 103. Central shaft; 200. First push assembly; 201. First push section; 202. Glue outlet; 203. Glue supply channel; 204. Glue retaining ring; 205. Glue return port; 206. Glue return channel; 207. Glue control ring; 210. First mounting plate; 220. First push plate; 300. Second jacking assembly; 310. Second mounting plate; 320. Second jacking plate; 400. Connecting assembly; 410. Connecting rod; 420. Elastic element; 500, tray; 501, pre-positioning hole; 600. Drive components. Detailed Implementation

[0020] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0021] In the description of this application, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application 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 application.

[0022] In the description of this application, "several" means one or more, "more than" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0023] In the description of this application, unless otherwise expressly defined, terms such as "setup," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this application in conjunction with the specific content of the technical solution.

[0024] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of this application and are not intended to limit this application; that is, the described embodiments are only a part of the embodiments of this application, and not all of them. The components of the embodiments of this application described and shown in the accompanying drawings can typically be arranged and designed in various different configurations.

[0025] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0026] like Figure 1 As shown, the rotor of a conventional synchronous permanent magnet motor includes an iron core 10 and multiple magnets 20. The iron core 10 can be composed of several stacked silicon steel sheets. Multiple through-holes 11 are formed on the iron core 10, with the opening direction of each slot 11 parallel to the axis of the iron core 10. A shaft hole is located in the middle of the iron core 10 for mounting a rotating shaft. A keyway can also be formed within the shaft hole to transmit torque. Furthermore, the slots 11 are generally rectangular cavities and are evenly distributed around the axis of the iron core 10. Each magnet 20 is inserted into its corresponding slot 11. Before insertion, adhesive can be applied to the inner wall of the slot 11 manually or using equipment to ensure the stability of the magnet 20 after insertion. Each end face of the magnet 20 has a positioning groove 21, such as a trapezoidal groove or a semi-circular groove, for easy positioning during assembly.

[0027] Firstly, please refer to Figures 2 to 11 As shown, this application provides an assembly tooling for an electric motor rotor, including a support 100 and a first pushing assembly 200 and a second pushing assembly 300 disposed on the support 100.

[0028] The support 100 has an assembly station 101 for placing the iron core 10.

[0029] The first push assembly 200 moves vertically and has a plurality of first push parts 201 at its upper end, each of which is used to pass upward through the corresponding slot 11.

[0030] The second push assembly 300 moves vertically and is used to move downward to abut against the upper end of each magnet 20, and is used to move downward synchronously with the first push assembly 200 to push each magnet 20 into each slot 11.

[0031] In this embodiment, the support 100 serves a supporting function, such as... Figure 2 As shown, it can be a modular structure, an integrated structure, etc. The support 100 has an assembly station 101, which can be an assembly groove or positioning protrusion that matches the iron core 10, so as to facilitate the positioning of the iron core 10 before installation. When placing the iron core 10, it is sufficient to ensure that the axis of the iron core 10 is in a vertical state.

[0032] In this embodiment, the first jacking assembly 200 can be mounted on the support 100 via guide rods, guide rails, slides, etc., and can move vertically. Figure 2 As shown, the upper end of the first push assembly 200 has a plurality of first push parts 201. The number of first push parts 201 corresponds one-to-one with the number of slots 11, and the size is slightly smaller than the hole diameter of the slot 11. After the iron core 10 is correctly placed in the assembly station 101, when the first push assembly 200 moves upward to the limit position, each first push part 201 can pass upward through the corresponding slot 11.

[0033] In this embodiment, the second jacking assembly 300 can also be mounted on the support 100 via guide rods, guide rails, slides, etc., and can move vertically, such as... Figure 2 As shown, its lower end is used to push the magnet 20, and it may have a number of second pushing parts corresponding to the slot 11, or it may be an annular protrusion structure. Both the second pushing assembly 300 and the first pushing assembly 200 can be driven manually or by a driving component.

[0034] Specifically, the iron core 10 is first placed on the assembly station 101, such as... Figure 7 As shown, adhesive can be pre-coated inside the slot 11, and the first pushing part 201 is pushed upward through the corresponding slot 11. Then, the lower ends of each magnet 20 are manually placed against the corresponding first pushing part 201. The second pushing assembly 300 is then driven downward so that its lower end is pressed against the upper end of each magnet 20. Finally, the second pushing assembly 300 and the first pushing assembly 200 are driven to move downward synchronously to push each magnet 20 into its corresponding slot 11. Figure 10As shown, after reaching its position, move the second jacking component 300 upwards, as indicated. Figure 11 As shown, the iron core 10 can be removed from the assembly station 101.

[0035] It should be noted that during the synchronous downward movement of the second push assembly 300 and the first push assembly 200, it is necessary to always ensure that each magnet 20 is pressed tightly to prevent the magnets 20 from loosening.

[0036] Therefore, the application of the motor rotor assembly fixture provided in this application embodiment, through the cooperation of the second push assembly 300 and the first push part 201 on the first push assembly 200 to press the magnet 20, and synchronously move to push each magnet 20 into each slot 11, so as to minimize the contact between the magnet 20 and the inner wall of the slot 11 during the insertion process, thereby making it easier to insert and place, greatly reducing wear, facilitating batch operation, and thus improving the assembly efficiency of the motor.

[0037] In some embodiments, the motor rotor assembly tooling provided in this application further includes: a plurality of connecting components 400, a support 100 having a transverse partition 102, an assembly station 101 located on the transverse partition 102, and each first pushing part 201 passing through the transverse partition 102.

[0038] The connecting assembly 400 includes a connecting rod 410 and an elastic element 420. The connecting rod 410 is vertically slidably connected to the transverse partition 102, and its upper end is fixedly connected to the second push assembly 300.

[0039] The first push assembly 200 is vertically slidably connected to the lower end of the connecting rod 410. The elastic element 420 is connected to the first push assembly 200 and the connecting rod 410 respectively, so as to provide a preset elastic force when the second push assembly 300 cooperates with each first push part 201 to press the corresponding magnet 20.

[0040] Specifically, such as Figure 2 As shown, the diaphragm 102 has an assembly station 101 at approximately the center, which has multiple through holes. The through holes are arranged at intervals around the periphery of the assembly station 101. The first push assembly 200 is located below the diaphragm 102. Each first push part 201 corresponds to each through hole and can pass upward through each through hole. The second push assembly 300 is located above the diaphragm 102.

[0041] For example, such as Figure 2As shown, the connecting components 400 can be configured in four groups: two groups in front of the support 100 and two groups in the back, ensuring balanced force distribution. The transverse partition 102 has multiple first sleeves vertically oriented, through which each connecting rod 410 passes, allowing for stable vertical sliding. The upper end of the connecting rod 410 can be fixed to the second jacking component 300 via screws, snap-fit ​​connections, or other methods, allowing both to move up and down together. Furthermore, the first jacking component 200 can have multiple second sleeves vertically oriented, through which the lower end of the connecting rod 410 passes, allowing the first jacking component 200 to move relative to the connecting rod 410 within a certain height range.

[0042] The elastic element 420 can be a compression spring, elastic sleeve, etc., and is sleeved below the connecting rod 410. Its upper end abuts against the bottom of the first pushing assembly 200, and its lower end abuts against the nut at the lower end of the connecting rod 410. It is used to continuously lift the first pushing assembly 200 to its highest limit position. In this way, when the second pushing assembly 300 cooperates with each of the first pushing parts 201 to press each magnet 20, the first pushing assembly 200 can be driven to descend synchronously simply by driving the second pushing assembly 300 downward. Moreover, the pressing force is entirely guaranteed by the elastic element 420 and remains constant.

[0043] Once all magnets 20 are fully inserted, they are fixed to the iron core 10 as a whole under the action of magnetic force and bonding. At this time, moving the second pushing assembly 300 upward will move the iron core 10 upward together. After the first pushing assembly 200 moves to its limit position, continuing to move the second pushing assembly 300 upward a certain distance will release the iron core 10. Figure 11 As shown, it is easy to remove. It is worth noting that the elastic clamping force can be adjusted by turning the nut at the lower end of the connecting rod 410.

[0044] Furthermore, in this embodiment, the first push assembly 200 includes a first mounting plate 210 and a plurality of first push plates 220 connected to the first mounting plate 210. The first mounting plate 210 is vertically slidably connected to the lower end of the connecting rod 410. Each first push plate 220 is arranged at intervals around the center of the assembly station 101. The first push part 201 is located on the first push plate 220.

[0045] The second push assembly 300 includes a second mounting plate 310 and a plurality of second push plates 320 connected to the second mounting plate 310. The second mounting plate 310 is fixed to the upper end of the connecting rod 410. Each second push plate 320 is arranged at intervals around the center of the assembly station 101. The lower end of the second push plate 320 is used to press against the upper end of the corresponding magnet 20.

[0046] Specifically, such as Figure 2As shown, the first mounting plate 210 is slidably connected to the lower end of the connecting rod 410 via each second sleeve. The lower end of each first push plate 220 can be fixed to the first mounting plate 210 by means of insertion, snap-fit, welding, etc., and each first push part 201 is located on the corresponding first push plate 220. This facilitates single-piece processing and subsequent installation.

[0047] Similarly, as Figure 2 As shown, the upper ends of the second mounting plate 310 and each connecting rod 410 can also be fixedly connected by means of insertion, snap-fit, welding, etc. The upper ends of each second push plate 320 can be fixedly connected to the second mounting plate 310 by means of insertion, snap-fit, welding, etc., and the lower ends of each second push plate 320 are used to press against the upper ends of the corresponding magnets 20. This facilitates single-piece processing and subsequent installation.

[0048] Furthermore, in this embodiment, the motor rotor assembly tooling provided in this application embodiment also includes a material tray 500 located between the first mounting plate 210 and the second mounting plate 310. The material tray 500 moves in the vertical direction and has a plurality of pre-positioning holes 501.

[0049] Each prepositioning hole 501 is used to insert a magnet 20 and corresponds to each first push part 201. The lower end of the second push plate 320 is used to pass downward through the corresponding prepositioning hole 501.

[0050] Specifically, such as Figure 2 , Figure 7 As shown, the tray 500 is used to place each magnet 20 in place and then press them together. It is roughly plate-shaped. The tray 500 can be slidably connected to each connecting rod 410 through limiting holes on its periphery. Multiple pre-positioning holes 501 are opened on it, and the size of each pre-positioning hole 501 is slightly larger than the size of the magnet 20, so that each magnet 20 can be manually inserted into the corresponding pre-positioning hole 501 for pre-positioning.

[0051] It should be noted that since the material tray 500 can slide vertically, before placing the iron core 10 onto the assembly station 101, the material tray 500 can be manually moved upwards to avoid affecting the material feeding. After the iron core 10 is placed, the material tray 500 is moved downwards to abut against the upper end face of the iron core 10.

[0052] Furthermore, in this embodiment, the motor rotor assembly fixture provided in this application embodiment also includes a drive member 600 disposed on the support 100. The drive member 600 is connected to the second mounting plate 310 in a transmission manner to drive the second mounting plate 310 to rise and fall.

[0053] For example, such as Figure 2As shown, the drive component 600 can be a cylinder, hydraulic cylinder, electric push rod, etc. Its body is fixedly installed above the support 100, with the telescopic end facing downwards and connected to the second mounting plate 310, thus replacing manual driving for lifting and lowering, saving more effort. Of course, the drive component 600 can also be replaced by other types of drive components, depending on actual needs, and this embodiment does not impose too many restrictions.

[0054] In some embodiments, the magnet 20 has a positioning groove 21 at its end, and the first pushing part 201 and the second pushing assembly 300 have positioning protrusions at their adjacent ends, the positioning protrusions being used to connect with the positioning groove 21.

[0055] Specifically, such as Figure 1 , Figure 7 , Figure 8 As shown, the magnet 20 has a positioning groove 21 at its end, such as trapezoidal, semi-circular, or irregular in shape. The upper end of the first pushing part 201 and the lower end of the second pushing assembly 300 both have positioning protrusions that match the positioning groove 21. When the first pushing part 201 and the second pushing assembly 300 press the magnet 20 together, the positioning protrusions can cooperate with the positioning groove 21 to position the magnet 20, thereby preventing the magnet 20 from shifting during the movement and further ensuring the smooth progress of the assembly.

[0056] In some embodiments, the iron core 10 has a shaft hole 12, and the support 100 is provided with a central shaft 103.

[0057] The central shaft 103 is located on the assembly station 101 and is used to mate and position with the shaft hole 12.

[0058] For example, such as Figure 1 , Figure 7 As shown, the shaft hole 12 is originally used to install the motor shaft, so it can be used for positioning. The center shaft 103 is installed at the center of the assembly station 101, which matches the shaft hole 12. Moreover, a key can be set on the center shaft 103 to cooperate with the keyway in the shaft hole 12, so that the iron core 10 can be quickly and accurately placed on the assembly station 101.

[0059] In some embodiments, a plurality of glue outlets 202 are provided on the upper periphery of the first push part 201, and the interior of the first push part 201 has glue supply channels 203 communicating with each glue outlet 202.

[0060] A retaining ring 204 is also provided on the upper periphery of the first push part 201. The retaining ring 204 is located below each glue outlet 202 and is used to elastically abut against the inner wall of the corresponding slot 11.

[0061] Specifically, such as Figures 2 to 9As shown, each glue outlet 202 is evenly distributed on the upper periphery of the first push part 201. The upper end of the glue supply channel 203 is connected to each glue outlet 202, and the lower end is connected to the pressure glue source. When each glue outlet 202 moves from top to bottom in the corresponding slot 11, glue can be evenly applied to the inner wall of the slot 11, which facilitates the subsequent automatic bonding of the magnet 20 to the inner wall of the slot 11.

[0062] It is worth noting that the magnet 20 moves into place just as the adhesive is applied to the inner wall of the entire slot 11. The time interval is short, which ensures excellent bonding effect and prevents loosening or cracking later.

[0063] Furthermore, each glue outlet 202 is equipped with a retaining ring 204 below it. The upper surface of the retaining ring 204 smoothly transitions to the lower edge of the glue outlet 202. The retaining ring 204 elastically abuts against the inner wall of the slot 11, preventing excess glue from overflowing downwards. For example, Figure 4 As shown, the retaining ring 204 can be bowl-shaped with the rim facing upwards, which makes it easy to hold a certain amount of adhesive and prevent excess adhesive from overflowing immediately when it is removed from the lower end of the slot 11.

[0064] Furthermore, in this embodiment, a plurality of return ports 205 are provided on the upper periphery of the first push part 201, and the interior of the first push part 201 has a return channel 206 communicating with each return port 205, and each return port 205 is located above each outlet port 202.

[0065] A glue control ring 207 is also provided on the upper periphery of the first push part 201. The glue control ring 207 is located above each glue return port 205 and is used to leave a preset gap with the inner wall of the corresponding slot 11. S .

[0066] Specifically, such as Figures 2 to 9 As shown, each return port 205 is located above each outlet 202, meaning the lower edge of the return port 205 is basically flush with the upper edge of the outlet 202. The upper end of the return channel 206 is connected to each return port 205, and the lower end is connected to a glue recovery device with a preset negative pressure suction. In this way, excess glue discharged from the outlet 202 can be effectively recovered through the return channel 206.

[0067] It is worth noting that the control ring 207 is positioned above each glue outlet 202, such as... Figure 9 As shown, the lower surface of the adhesive control ring 207 smoothly transitions with the upper opening of the adhesive outlet 202, and a preset gap is left between the adhesive control ring 207 and the inner wall of the slot 11. S The thickness is approximately 0.5mm to 1mm. This ensures that the adhesive layer thickness is basically consistent, so that the outer surface of the magnet 20 and the inner wall of the corresponding slot 11 can achieve basically the same adhesive force. Secondly, under the negative pressure suction of the adhesive return channel 206, air flows out from the preset gap. SThe entry point facilitates the breaking of the adhesive segment between the control ring 207 and the inner wall of the slot 11, thereby greatly avoiding the situation where the adhesive material sticks to the magnet 20 too early due to excessively long strands.

[0068] Secondly, such as Figure 12 As shown in the figure, this application embodiment also provides an assembly method for a motor rotor, applied to the assembly fixture for the motor rotor in any of the above embodiments, including the following steps: S101. Place the iron core 10 on the assembly station 101 and make the first push part 201 pass upward through the corresponding slot 11.

[0069] Specifically, when placing the iron core 10 on the assembly station 101, it is necessary to ensure that each slot 11 is aligned with each first push part 201.

[0070] S102. Place the lower end of each magnet 20 against the corresponding first push part 201, and drive the second push assembly 300 to move downward so as to press against the upper end of each magnet 20.

[0071] Specifically, after all the magnets 20 are placed, the second pushing assembly 300 is driven to move downward, thereby pressing each magnet 20 together.

[0072] S103, then drive the second push assembly 300 and the first push assembly 200 to move down synchronously, so as to push each magnet 20 into each slot 11.

[0073] Specifically, by cooperating with the second push assembly 300 and the first push assembly 200, the pressed magnet 20 is pushed into each slot 11. After that, the assembled iron core 10 can be taken out by releasing the second push assembly 300 and the first push assembly 200.

[0074] Therefore, the motor rotor assembly method provided in this application embodiment uses the second pushing assembly 300 to cooperate with the first pushing part 201 on the first pushing assembly 200 to press the magnet 20, and move synchronously to push each magnet 20 into each slot 11, so that the magnet 20 does not contact the inner wall of the slot 11 during the insertion process as much as possible, which makes it easier to insert and place the magnet 20, greatly reduces wear, facilitates batch operation, and improves the assembly efficiency of the motor.

[0075] The above content is merely an example and illustration of the structure of this application. Any modifications or additions made by those skilled in the art to the specific embodiments described, or any substitutions made in a similar manner, shall fall within the protection scope of this application.

Claims

1. An assembly fixture for an electric motor rotor, characterized in that, It includes a support (100) and a first jacking assembly (200) and a second jacking assembly (300) disposed on the support (100); The support (100) has an assembly station (101) for mounting the iron core (10) of the motor rotor. The first push assembly (200) moves in the vertical direction and has a plurality of first push parts (201) at its upper end. Each first push part (201) is used to pass upward through the corresponding slot (11) on the iron core (10). The second push assembly (300) moves vertically and is used to move downward to abut against the upper end of each magnet (20) of each motor rotor, and is used to move downward synchronously with the first push assembly (200) to push each magnet (20) into each slot (11).

2. The assembly fixture for a motor rotor according to claim 1, characterized in that, Also includes: Multiple connecting components (400), the support (100) has a transverse partition (102), the assembly station (101) is located on the transverse partition (102), and each of the first push parts (201) passes through the transverse partition (102); The connecting assembly (400) includes a connecting rod (410) and an elastic element (420). The connecting rod (410) is vertically slidably connected to the transverse partition (102), and its upper end is fixedly connected to the second push assembly (300). The first push assembly (200) is vertically slidably connected to the lower end of the connecting rod (410), and the elastic element (420) is connected to the first push assembly (200) and the connecting rod (410) respectively, so as to provide a preset elastic force when the second push assembly (300) cooperates with each of the first push parts (201) to press against the corresponding magnet (20).

3. The assembly fixture for a motor rotor according to claim 2, characterized in that, The first push assembly (200) includes a first mounting plate (210) and a plurality of first push plates (220) connected to the first mounting plate (210). The first mounting plate (210) is vertically slidably connected to the lower end of the connecting rod (410). Each of the first push plates (220) is arranged at intervals around the center of the assembly station (101). The first push part (201) is located on the first push plate (220). The second push assembly (300) includes a second mounting plate (310) and a plurality of second push plates (320) connected to the second mounting plate (310). The second mounting plate (310) is fixed to the upper end of the connecting rod (410). Each of the second push plates (320) is arranged at intervals around the center of the assembly station (101). The lower end of the second push plate (320) is used to press against the upper end of the corresponding magnet (20).

4. The assembly fixture for a motor rotor according to claim 3, characterized in that, It also includes a tray (500) located between the first mounting plate (210) and the second mounting plate (310), the tray (500) moving in a vertical direction and having a plurality of pre-positioning holes (501) thereon. Each of the prepositioning holes (501) is used to insert the magnet (20) and corresponds one-to-one with each of the first push parts (201). The lower end of the second push plate (320) is used to pass downward through the corresponding prepositioning hole (501).

5. The assembly tooling for a motor rotor according to claim 3, characterized in that, It also includes a drive member (600) disposed on the support (100), the drive member (600) being connected to the second mounting plate (310) for driving the second mounting plate (310) to rise and fall.

6. The assembly fixture for a motor rotor according to claim 1, characterized in that, The magnet (20) has a positioning groove (21) at its end, and the first push part (201) and the second push assembly (300) have positioning protrusions at their adjacent ends, which are used to connect with the positioning groove (21) at the end of the magnet (20).

7. The assembly tooling for a motor rotor according to claim 1, characterized in that, The iron core (10) has a shaft hole (12), and the support (100) is provided with a central shaft (103). The central shaft (103) is located on the assembly station (101) and is used to mate and position with the shaft hole (12).

8. The assembly tooling for a motor rotor according to any one of claims 1 to 7, characterized in that, The first push part (201) has a plurality of glue outlets (202) on its upper periphery, and the first push part (201) has a glue supply channel (203) communicating with each of the glue outlets (202). A retaining ring (204) is also provided on the upper periphery of the first push part (201). The retaining ring (204) is located below each of the glue outlets (202) and is used to elastically abut against the inner wall of the corresponding slot (11).

9. The assembly fixture for a motor rotor according to claim 8, characterized in that, The first push part (201) has a plurality of return ports (205) on its upper periphery. The first push part (201) has a return channel (206) inside that communicates with each of the return ports (205). Each of the return ports (205) is located above each of the outlet ports (202). The first push part (201) is also provided with a glue control ring (207) on the upper periphery. The glue control ring (207) is located above each of the glue return ports (205) and is used to leave a preset gap with the inner wall of the corresponding slot (11).

10. A method for assembling a motor rotor, characterized in that, The method, applied to the assembly fixture for an electric motor rotor as described in any one of claims 1 to 9, comprises: The iron core (10) is placed on the assembly station (101), and the first push part (201) is pushed upward through the corresponding slot (11). The lower ends of each of the magnets (20) are placed against the corresponding first push part (201), and the second push assembly (300) is driven to move down to abut against the upper ends of each of the magnets (20); Then drive the second push assembly (300) and the first push assembly (200) to move down synchronously to push each of the magnets (20) into the corresponding slots (11).

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