Glue pouring tool of brushless motor stator and glue pouring process thereof

Abstract

The invention relates to the technical field of brushless motors, in particular to a brushless motor stator glue pouring tool and a glue pouring process thereof.The brushless motor stator glue pouring tool comprises a tool frame, a machining table used for containing a machine shell is arranged in the tool frame, a stator winding is arranged in the machine shell, and a positioning cylinder is arranged on the top face of the machining table; the positioning cylinder is inserted into the machine shell and the stator winding, a plurality of extrusion rods are arranged on the side wall of the positioning cylinder in a sliding and penetrating mode, the positioning cylinder is provided with a moving mechanism used for driving the extrusion rods to move at the same time, and the machining table is provided with a positioning assembly used for positioning and clamping the machine shell. The glue pouring tool has the advantages that stators of different specifications can be centered and positioned, and the application range of the glue pouring tool is widened.

Description

Technical Field

[0001] This application relates to the technical field of brushless motors, and particularly to a potting tooling for a brushless motor stator and its potting process. Background Art

[0002] During the production and assembly process of a brushless motor stator, potting is required. The traditional potting method is gravity potting of the motor stator from the upper part of the end cover. However, this potting method cannot guarantee the centering of the stator housing and its internal stator winding, resulting in uneven product quality after potting.

[0003] To solve the problem of not being able to guarantee the centering of the stator housing and its internal stator winding, invention patent CN115102348A discloses a servo motor stator potting tooling and potting method, including a potting module. The potting module has a positioning groove adapted to the stator housing. A positioning hole is vertically opened in the middle of the positioning groove. A first limiting ring is concentrically arranged beside the positioning hole. A positioning rod in a vertical shape and in transitional fit with the stator winding is arranged in the positioning hole. There is a pressure rubber plate on the upper part of the positioning rod. A second limiting ring opposite to the first limiting ring is arranged on the bottom surface of the pressure rubber plate. The inner diameters of the first limiting ring and the second limiting ring are the same and both are larger than the inner diameter of the stator winding. Positioning parts for centering are provided in the potting tooling to ensure the centering of the stator housing and its internal stator winding during the potting process.

[0004] However, due to different specifications of brushless motors, the inner diameters of their stator windings are different. When the inner diameter of the stator winding is larger than the outer diameter of the positioning rod, the positioning rod cannot center the stator winding at this time, resulting in a low application range and large limitations of the potting tooling. Summary of the Invention

[0005] In order to meet the requirement of centering and positioning stators of different specifications and improve the application range of the potting tooling, this application provides a potting tooling for a brushless motor stator and its potting process.

[0006] In the first aspect, a potting tooling for a brushless motor stator provided by this application adopts the following technical solution: A potting tooling for a brushless motor stator includes a tooling frame. A processing table for placing the motor housing is arranged inside the tooling frame. A stator winding is arranged inside the motor housing. A positioning cylinder is arranged on the top surface of the processing table. The positioning cylinder is respectively inserted into the motor housing and the stator winding. A plurality of extrusion rods are slidably penetrated through the side wall of the positioning cylinder. The positioning cylinder is provided with a moving mechanism for simultaneously driving the plurality of extrusion rods to move. The processing table is provided with a positioning component for positioning and clamping the motor housing.

[0007] By adopting the above technical solution, when it is necessary to pot the stator winding, first place the casing on the processing table, and then position and clamp the casing centered on the positioning cylinder through the positioning component. Then place the stator winding in the casing, and then drive multiple extrusion rods to move simultaneously through the moving mechanism. At this time, the multiple extrusion rods simultaneously extrude the inner wall of the stator winding, prompting the stator winding to be centered and limited within the casing. By driving the multiple extrusion rods to move simultaneously through the moving mechanism, it is possible to center and limit stator windings of different specifications, which is conducive to improving the applicable range of the potting tooling.

[0008] Optionally, the moving mechanism includes a rotating shaft rotatably arranged in the positioning cylinder. Arc grooves are respectively formed on the side wall of the rotating shaft corresponding to the positions of the multiple extrusion rods. One ends of the multiple extrusion rods are respectively connected with the corresponding arc grooves in a limiting and sliding manner, and the arc grooves are arc-shaped from shallow to deep.

[0009] By adopting the above technical solution, when driving the rotating shaft to rotate counterclockwise, under the linear guiding action of the positioning cylinder, the rotating shaft drives the extrusion rod to move outwards through the shallow arc groove. When the rotating shaft rotates in the reverse direction, it drives the extrusion rod to move inwards through the deep arc groove, which is conducive to improving the stability of centering and positioning stator windings of different specifications.

[0010] Optionally, a rotating seat is arranged on the bottom surface of the processing table. The bottom end of the rotating shaft extends into the rotating seat. A torsion spring is arranged in the rotating seat. One end of the torsion spring is fixedly connected to the inside of the rotating seat, and the other end of the torsion spring is fixedly connected to the side wall of the rotating shaft. The processing table is provided with a limiting component for unidirectionally locking the rotating shaft.

[0011] By adopting the above technical solution, when the rotating shaft rotates forward, the rotating shaft simultaneously drives the multiple extrusion rods to move downwards, and the torsion spring is elastically deformed. When the rotating shaft is released, at this time, the limiting component unidirectionally locks the rotating shaft, and the multiple extrusion rods are fixed at the current length, which is conducive to improving the stability of the multiple extrusion rods for extruding and limiting the stator winding.

[0012] Optionally, the limiting component includes a wedge-shaped limiting rod. A gear is fixedly sleeved on the bottom end of the rotating shaft. A support is arranged on the bottom surface of the processing table. The wedge-shaped limiting rod slidably penetrates through the support. One end of the wedge-shaped limiting rod cooperates with the gear. The processing table is provided with an elastic member for cooperatively driving the wedge-shaped limiting rod to move.

[0013] By adopting the above technical solution, the elastic member drives the wedge-shaped limiting rod to always cooperate with the gear. When the rotating shaft rotates forward, the rotating shaft drives the gear to rotate, and the wedge-shaped limiting rod reciprocates through the elastic member. When the rotating shaft rotates reversely, the wedge-shaped limiting rod clamps the gear, preventing the rotating shaft from rotating reversely, which is beneficial to ensuring the stability of the multiple extrusion rods for extruding and limiting the stator winding.

[0014] Optionally, the elastic member is a spring. The spring is sleeved on the wedge-shaped limiting rod. One end of the spring is fixedly connected to the side wall of the wedge-shaped limiting rod, and the other end of the spring is fixedly connected to the support.

[0015] By adopting the above technical solution, when the wedge-shaped limiting rod moves away from the gear, the wedge-shaped limiting rod compresses the spring. When the wedge-shaped limiting rod aligns with the tooth root of the gear again, the spring releases the elastic force and drives the wedge-shaped limiting rod to cooperate with the gear again, which is beneficial to improving the stability of the one-way rotation of the rotating shaft.

[0016] Optionally, the positioning assembly includes multiple positioning clamping blocks. The multiple positioning clamping blocks are respectively slidably arranged on the top surface of the processing table. The multiple positioning clamping blocks enclose to form a placement space for the casing. The processing table is respectively provided with driving members for driving the positioning clamping blocks to slide.

[0017] By adopting the above technical solution, when it is necessary to position the casing, first sleeve the casing on the positioning cylinder, and then respectively drive the positioning clamping blocks to move towards the casing through the driving members. At this time, the casing is centered and positioned with the positioning cylinder as the axis, which is beneficial to improving the stability of the centered positioning of the casing on the processing table.

[0018] Optionally, drying pipes are respectively arranged on the inner walls of the multiple positioning clamping blocks.

[0019] By adopting the above technical solution, when it is necessary to dry the glue, start the drying pipes after the positioning clamping blocks clamp the positioning cylinder. At this time, the drying pipes heat the outer wall of the casing, thereby promoting the curing of the glue.

[0020] Optionally, a lifting plate is arranged on the tooling rack in a lifting manner. The bottom surface of the lifting plate is provided with an upper cover. The bottom surface of the upper cover is provided with an inner pressing plate. The tooling rack is provided with a lifting member for driving the lifting plate to lift. A glue filling hole is opened on the top surface of the lifting plate.

[0021] By adopting the above technical solution, when it is necessary to cover the top of the casing and the stator winding, the lifting plate is driven to descend by the lifting member, and the upper cover and the inner pressing plate are simultaneously driven to descend by the lifting plate. At this time, the upper cover covers the top of the casing, and the inner pressing plate covers the top of the stator winding. Then, glue is injected into the gap between the casing and the stator winding through the glue injection hole until the gap is filled with the glue, which is beneficial to improving the stability of the glue filling between the casing and the stator winding.

[0022] Optionally, the inner pressing plate includes an inner ring sub-plate and an outer ring sub-plate. The inner ring sub-plate is arranged on the bottom surface of the upper cover, and the outer ring sub-plate is tightly sleeved on the outer wall of the inner ring sub-plate.

[0023] By adopting the above technical solution, the outer ring sub-plate is tightly sleeved on the outer wall of the inner ring sub-plate according to the stator windings of different specifications, so that the inner pressing plate adapts to the specifications of the stator windings, which is beneficial to improving the stability of the inner pressing plate covering the top of the stator winding.

[0024] In a second aspect, the present application provides a glue filling process for a brushless motor stator, including the following steps: Pre-assembly: Place the casing on the processing table, center and clamp the casing through the positioning component, and pre-place the stator winding in the casing; Positioning: Drive multiple extrusion rods to move simultaneously through the moving mechanism, and the multiple extrusion rods simultaneously press against the inner wall of the stator winding, so that the stator winding is centered and fixed in the casing; Covering: Drive the upper cover to cover the top of the casing, and the inner pressing plate covers the top of the stator winding; Glue filling: Inject the glue into the annular gap between the stator winding and the inner wall of the casing through the glue injection hole; Drying: Start the drying tube, and the drying tube heats the outer wall of the casing to accelerate the curing of the glue; Demolding: Open the upper cover and the inner pressing plate, rotate to loosen the stator winding, loosen the clamping of the casing, and take out the casing to complete the glue filling.

[0025] By adopting the above technical solution, through the steps of pre-assembly, positioning, covering, glue filling, drying, and demolding, finally the glue is filled and cured between the stator winding and the casing, which is beneficial to improving the stability of the glue filling of the brushless stator.

[0026] In summary, the present application includes at least one of the following beneficial technical effects: 1. When it is necessary to pot the stator, first place the housing on the processing table, then position and clamp the housing centered on the positioning cylinder through the positioning component. Next, place the stator winding in the housing, and then drive multiple extrusion rods to move simultaneously through the moving mechanism. At this time, the multiple extrusion rods simultaneously extrude the inner wall of the stator winding, prompting the stator winding to be centered and limited within the housing. By driving the multiple extrusion rods to move simultaneously through the moving mechanism, it is possible to center and limit stator windings of different specifications, thereby facilitating the improvement of the applicable range of the potting tooling. 2. Through steps such as pre-installation, positioning, capping, potting, drying, and demolding, finally, the adhesive liquid is filled and cured between the stator winding and the housing, which is conducive to improving the stability of brushless stator potting. Description of the Drawings

[0027] Figure 1 is the first overall structural schematic diagram of the potting tooling for the brushless motor stator of the present application; Figure 2 is the assembly schematic diagram of the housing and the stator winding of the present application; Figure 3 is the second overall structural schematic diagram of the potting tooling for the brushless motor stator of the present application; Figure 4 is the structural schematic diagram of the moving mechanism of the present application; Figure 5 is the cross-sectional view of the positioning cylinder and the rotating shaft of the present application; Figure 6 is Figure 3 the enlarged view of part A of Figure 7 is the structural schematic diagram of the positioning clamp block of the present application; Figure 8 is the structural schematic diagram of the inner pressure plate of the present application.

[0028] Description of the Reference Numerals: 1, tooling frame; 2, processing table; 3, stator winding; 4, positioning cylinder; 5, extrusion rod; 6, rotating shaft; 7, arc groove; 8, rotating seat; 9, coil spring; 10, wedge-shaped limiting rod; 11, gear; 12, support; 13, spring; 14, positioning clamp block; 15, first cylinder; 16, accommodating groove; 17, drying pipe; 18, lifting plate; 19, upper capping; 20, inner pressure plate; 21, second cylinder; 22, potting hole; 23, inner ring plate; 24, outer ring plate; 25, housing. Detailed Embodiment

[0029] The following is a further detailed description of the present application in combination with the attached Figure 1-8 drawings.

[0030] First aspect, refer to Figures 1-4, A potting tooling for a brushless motor stator, including a tooling frame 1. A processing table 2 is installed inside the tooling frame 1. The processing table 2 is used for placing the motor housing 25. In this embodiment, there are two processing positions on the processing table 2 for placing the motor housing 25. A stator winding 3 is installed inside the motor housing 25. A positioning cylinder 4 is fixedly connected to the top surface of the processing table 2, and the positioning cylinder 4 is respectively inserted into the motor housing 25 and the stator winding 3. A plurality of extrusion rods 5 slide through the side wall of the positioning cylinder 4. The positioning cylinder 4 is equipped with a moving mechanism, and the moving mechanism is used to drive a plurality of extrusion rods 5 to move towards or away from the stator winding 3 simultaneously. The processing table 2 is equipped with a positioning component, and the positioning component is used to position and clamp the motor housing 25.

[0031] When potting the stator winding 3 is required, first, the motor housing 25 is sleeved on the positioning cylinder 4, and the motor housing 25 is placed on the table surface of the processing table 2. Then, the motor housing 25 is positioned and clamped through the positioning component. At this time, the motor housing 25 is positioned and clamped with the positioning cylinder 4 as the axis. After the motor housing 25 is positioned and clamped, the stator winding 3 is inserted and placed in the positioning cylinder 4. Then, the moving mechanism drives a plurality of extrusion rods 5 to move towards the stator winding 3 simultaneously. At this time, a plurality of extrusion rods 5 simultaneously squeeze and press against the inner wall of the stator winding 3, and the stator winding 3 is centered and limited inside the motor housing 25, completing the centering and limiting of the stator winding 3 of the current specification inside the motor housing 25.

[0032] Specifically, referring to Figure 4 and Figure 5 , the moving mechanism includes a rotating shaft 6. The rotating shaft 6 is rotatably installed inside the positioning cylinder 4. Arc-shaped grooves 7 are respectively opened on the side wall of the rotating shaft 6 corresponding to the positions of a plurality of extrusion rods 5. Among them, the arc-shaped grooves 7 are arc-shaped from shallow to deep. One end of the extrusion rod 5 is connected to the arc-shaped groove 7 in a limited sliding manner.

[0033] When the rotating shaft 6 rotates counterclockwise, under the guiding action of the positioning cylinder 4, the rotating shaft 6 drives the extrusion rod 5 to move horizontally towards the stator winding 3 through the shallow section of the arc-shaped groove 7. At this time, the extrusion rod 5 squeezes and presses against the inner wall of the stator winding 3. When the rotating shaft 6 rotates clockwise, similarly under the guiding action of the positioning cylinder 4, the rotating shaft 6 drives the extrusion rod 5 to move horizontally away from the stator winding 3 through the deep section of the arc-shaped groove 7. At this time, the extrusion rod 5 disengages from the inner wall of the stator winding 3, facilitating the demolding of the stator winding 3.

[0034] Referring to Figure 3 and Figure 4 , to facilitate the rotation of the rotating shaft 6, a rotating seat 8 is fixedly connected to the bottom surface of the processing table 2. The bottom end of the rotating shaft 6 penetrates and extends into the rotating seat 8. A coil spring 9 is installed inside the rotating seat 8. One end of the coil spring 9 is fixedly connected to the inside of the rotating seat 8, and the other end of the coil spring 9 is fixedly connected to the side wall of the rotating shaft 6.

[0035] In addition, referring to Figure 3 andFigure 6 The processing table 2 is also equipped with a limiting component for unidirectionally locking the rotating shaft 6. The limiting component includes a wedge-shaped limiting rod 10. A gear 11 is fixedly sleeved at the bottom end of the rotating shaft 6, and a support 12 is fixedly connected to the bottom surface of the processing table 2. The wedge-shaped limiting rod 10 is slidably installed in the support 12, and one end of the wedge-shaped limiting rod 10 facing the rotating shaft 6 is engaged with the tooth root of the gear 11. The processing table 2 is also equipped with an elastic member for driving the wedge-shaped limiting rod 10 to move horizontally in cooperation.

[0036] Among them, the elastic member is a spring 13. The spring 13 is sleeved on the wedge-shaped limiting rod 10, and one end of the spring 13 is fixedly connected to the side wall of the wedge-shaped limiting rod 10, and the other end of the spring 13 is fixedly connected to one end of the support 12.

[0037] When the rotating shaft 6 rotates counterclockwise, the rotating shaft 6 drives the extrusion rod 5 to move towards the inner wall of the stator winding 3 through the shallow section of the arc groove 7. At this time, the coil spring 9 is elastically deformed, and under the action of the spring 13, the wedge-shaped limiting rod 10 is always engaged with the tooth root of the gear 11. When the rotation of the rotating shaft 6 stops, due to the unidirectionality of the wedge-shaped limiting rod 10, under the combined action of the spring 13, the rotating shaft 6 is stationary in the current state through the gear 11, so as to ensure that the extrusion rod 5 always presses tightly against the inner wall of the stator sleeve group.

[0038] When the wedge-shaped limiting rod 10 is pulled in the direction away from the rotating shaft 6, the wedge-shaped limiting rod 10 presses the spring 13, and the wedge-shaped limiting rod 10 disengages from the gear 11. At this time, the gear 11 is released from the restriction, the coil spring 9 releases the elastic force, and drives the rotating shaft 6 to rotate clockwise to reset. The rotating shaft 6 drives the extrusion rod 5 to move away from the stator winding 3 through the deep section of the arc groove 7, achieving the purpose of demolding the stator winding 3.

[0039] Specifically, referring to Figure 1 The positioning component includes positioning clamping blocks 14. The number of positioning clamping blocks 14 is multiple, and the multiple positioning clamping blocks 14 enclose a placement space for the machine shell 25. The multiple positioning clamping blocks 14 are respectively slidably installed on the top surface of the processing table 2, and the processing table 2 is respectively equipped with driving members for driving the multiple positioning clamping blocks 14 to move. In this embodiment, the driving member is a first cylinder 15, and the multiple first cylinders 15 operate synchronously, so that the movement variables of the multiple positioning clamping blocks 14 are the same.

[0040] When it is necessary to fix the machine shell 25, first, the machine shell 25 is sleeved on the positioning cylinder 4, and then multiple first cylinders 15 are started simultaneously. The first cylinders 15 drive the positioning clamping blocks 14 to move towards the machine shell 25. At this time, the multiple positioning clamping blocks 14 jointly clamp the machine shell 25, and the machine shell 25 is centered and limited on the surface of the processing table 2 with the positioning cylinder 4 as the axis.

[0041] It should be noted that referring to Figure 7, a receiving groove 16 is formed in the inner wall of the positioning clamping block 14, and a drying pipe 17 is installed in the receiving groove 16. The drying pipe 17 is electrically connected to a power source.

[0042] After the glue injection is completed, the drying pipe 17 is started. At this time, the drying pipe 17 dries and heats the casing 25, thereby accelerating the curing of the glue.

[0043] See Figure 3 , to facilitate covering the top ends of the casing 25 and the stator winding 3, a lifting plate 18 is installed on the tooling rack 1 in a lifting manner. A top cover 19 is fixedly connected to the bottom surface of the lifting plate 18, and an inner pressing plate 20 is fixedly connected to the bottom surface of the top cover 19. A lifting member is installed on the tooling rack 1. In this embodiment, the lifting member is a second cylinder 21, and the driving end of the second cylinder 21 is fixedly connected to the top surface of the lifting plate 18. A glue injection hole 22 penetrates through the top surfaces of the lifting plate 18 and the top cover 19 together.

[0044] When it is necessary to pour into the gap between the casing 25 and the stator winding 3, the second cylinder 21 is started. The driving end of the second cylinder 21 drives the lifting plate 18 to descend. The lifting plate 18 drives the top cover 19 and the inner pressing plate 20 to descend. Since there is a height difference between the casing 25 and the stator winding 3, at this time, the top cover 19 is sealed at the top end of the casing 25, and the inner pressing plate 20 is sealed at the top end of the stator winding 3. Then, glue is injected into the gap through the glue injection hole 22 until the gap between the casing 25 and the stator winding 3 is filled with glue.

[0045] It should be noted that, see Figure 8 , since the diameters of the stator windings 3 of different specifications are different, in order to satisfy the sealing of the top end of the stator winding 3 by the inner pressing plate 20, the inner pressing plate 20 includes an inner ring sub-plate 23 and an outer ring sub-plate 24. The inner ring sub-plate 23 is fixed to the bottom surface of the top cover 19, and the outer ring sub-plate 24 is tightly sleeved on the outer wall of the inner ring sub-plate 23.

[0046] In practical applications, the diameters of the stator windings 3 of different specifications are different. To facilitate the covering of the stator winding 3 by the inner pressing plate 20, the diameter of the outer ring sub-plate 24 is selected according to actual needs until the sum of the diameters of the inner ring sub-plate 23 and the outer ring sub-plate 24 satisfies the covering of the top end of the stator winding 3.

[0047] Second aspect, a glue injection process for a brushless motor stator, includes the following steps: S1: Pre-assembly. First, the casing 25 is sleeved on the positioning cylinder 4, and then a plurality of first cylinders 15 are started simultaneously. The first cylinders 15 drive the positioning clamping blocks 14 to move towards the casing 25. At this time, the plurality of positioning clamping blocks 14 jointly clamp the casing 25, and the casing 25 is centered and limited on the processing table 2 surface with the positioning cylinder 4 as the axis. Finally, the stator winding 3 is pre-assembled into the casing 25; S2: Positioning. Drive the rotating shaft 6 to rotate counterclockwise. Under the guiding action of the positioning cylinder 4, the rotating shaft 6 drives the extrusion rod 5 to horizontally move towards the stator winding 3 through the shallow section of the arc groove 7. At this time, the extrusion rod 5 extrudes and presses against the inner wall of the stator winding 3. When the rotating shaft 6 is released, due to the unidirectionality of the wedge-shaped limiting rod 10, under the cooperative action of the spring 13, the rotating shaft 6 is stationary in the current state through the gear 11, so as to ensure that the extrusion rod 5 always extrudes and presses against the inner wall of the stator winding 3, and the stator winding 3 is centered and limited within the housing 25; S3: Capping. Start the second cylinder 21. The driving end of the second cylinder 21 drives the lifting plate 18 to descend. The lifting plate 18 drives the upper capping 19 and the inner pressing plate 20 to descend. Since there is a height difference between the housing 25 and the stator winding 3, at this time, the upper capping 19 is sealed on the top of the housing 25, and the inner pressing plate 20 is sealed on the top of the stator winding 3; S4: Glue filling. Then inject glue through the glue injection hole 22 into the gap until the gap between the housing 25 and the stator winding 3 is filled with glue; S5: Drying. Start the drying pipe 17. At this time, the drying pipe 17 dries and heats the housing 25, so as to accelerate the curing of the glue; S6: Demolding. Start the second cylinder 21. The reset finally drives the upper capping 19 and the inner pressing plate 20 to rise. Start the first cylinder 15. The reset drives the positioning clamp block 14 away from the housing 25. Drive the wedge-shaped limiting rod 10 to pull away from the rotating shaft 6. The wedge-shaped limiting rod 10 presses the spring 13, and the wedge-shaped limiting rod 10 disengages from the gear 11. At this time, the gear 11 is released from the restriction, the coil spring 9 releases the elastic force, and drives the rotating shaft 6 to rotate clockwise for reset. The rotating shaft 6 drives the extrusion rod 5 to move away from the stator winding 3 through the deep section of the arc groove 7. Finally, take out the whole housing 25 to complete the glue filling.

[0048] In summary, 1. The moving mechanism drives multiple extrusion rods 5 to move simultaneously, so as to meet the centering and limiting of stator windings 3 of different specifications, which is beneficial to improving the applicable range of the glue filling tooling; 2. Through the steps of pre-installation, positioning, capping, glue filling, drying and demolding, finally the glue is filled and cured between the stator winding 3 and the housing 25, which is beneficial to improving the stability of brushless stator glue filling.

[0049] The above are all the preferred embodiments of this application. The protection scope of this application is not limited by this. Therefore, all equivalent changes made according to the structure, shape and principle of this application should be covered within the protection scope of this application.

Claims

1. A potting tooling for a brushless motor stator, comprising a tooling frame (1). A processing table (2) for placing a housing (25) is arranged inside the tooling frame (1). A stator winding (3) is arranged inside the housing (25). A positioning cylinder (4) is arranged on the top surface of the processing table (2). The positioning cylinder (4) is respectively inserted into the housing (25) and the stator winding (3). A plurality of extrusion rods (5) are slidably penetrated through the side wall of the positioning cylinder (4). The positioning cylinder (4) is provided with a moving mechanism for simultaneously driving the plurality of extrusion rods (5) to move. The processing table (2) is provided with a positioning assembly for positioning and clamping the housing (25).

2. The potting tooling for the stator of a brushless motor according to claim 1, characterized in that: The moving mechanism includes a rotating shaft (6). The rotating shaft (6) is rotatably arranged inside the positioning cylinder (4). Arc grooves (7) are respectively formed in the side wall of the rotating shaft (6) corresponding to the positions of the plurality of extrusion rods (5). One ends of the plurality of extrusion rods (5) are respectively in limiting sliding connection with the corresponding arc grooves (7). The arc grooves (7) are arc-shaped from shallow to deep.

3. The potting tooling for the stator of a brushless motor according to claim 2, characterized in that: A rotating seat (8) is arranged on the bottom surface of the processing table (2). The bottom end of the rotating shaft (6) extends into the rotating seat (8). A torsion spring (9) is arranged inside the rotating seat (8). One end of the torsion spring (9) is fixedly connected to the inside of the rotating seat (8). The other end of the torsion spring (9) is fixedly connected to the side wall of the rotating shaft (6). The processing table (2) is provided with a limiting assembly for unidirectionally locking the rotating shaft (6).

4. The potting tooling for the stator of a brushless motor according to claim 3, characterized in that: The limiting assembly includes a wedge-shaped limiting rod (10). A gear (11) is fixedly sleeved on the bottom end of the rotating shaft (6). A support (12) is arranged on the bottom surface of the processing table (2). The wedge-shaped limiting rod (10) is slidably penetrated through the support (12). One end of the wedge-shaped limiting rod (10) is in cooperation with the gear (11). The processing table (2) is provided with an elastic member for cooperatively driving the wedge-shaped limiting rod (10) to move.

5. The potting tooling for the stator of a brushless motor according to claim 4, characterized in that: The elastic member is a spring (13). The spring (13) is sleeved on the wedge-shaped limiting rod (10). One end of the spring (13) is fixedly connected to the side wall of the wedge-shaped limiting rod (10). The other end of the spring (13) is fixedly connected to the support (12).

6. The potting tooling for the stator of a brushless motor according to claim 1, characterized in that: The positioning assembly includes a plurality of positioning clamping blocks (14). The plurality of positioning clamping blocks (14) are respectively slidably arranged on the top surface of the processing table (2). The plurality of positioning clamping blocks (14) enclose to form a placement space for the housing (25). The processing table (2) is respectively provided with a driving member for driving the positioning clamping blocks (14) to slide.

7. The potting tooling for the stator of a brushless motor according to claim 6, wherein: Drying pipes (17) are respectively arranged on the inner walls of the plurality of positioning clamping blocks (14).

8. A potting tool for a brushless motor stator according to claim 7, characterized in that: A lifting plate (18) is arranged on the tooling frame (1) in a lifting manner. An upper cover (19) is arranged on the bottom surface of the lifting plate (18). An inner pressing plate (20) is arranged on the bottom surface of the upper cover (19). The tooling frame (1) is provided with a lifting member for driving the lifting plate (18) to lift and lower. A potting hole (22) is formed on the top surface of the lifting plate (18).

9. The potting tooling for the stator of a brushless motor according to claim 8, wherein: The inner pressing plate (20) includes an inner ring sub-plate (23) and an outer ring sub-plate (24). The inner ring sub-plate (23) is disposed on the bottom surface of the upper cover (19), and the outer ring sub-plate (24) is tightly sleeved on the outer wall of the inner ring sub-plate (23).

10. A potting process for a brushless motor stator, based on the potting tooling for a brushless motor stator described in claim 9, characterized in that, It includes the following steps: Pre-assembly: Place the casing (25) on the processing table (2), center and clamp the casing (25) through the positioning component, and pre-place the stator winding (3) in the casing (25). Positioning: Drive multiple extrusion rods (5) to move simultaneously through the moving mechanism. The multiple extrusion rods (5) simultaneously abut against the inner wall of the stator winding (3), so that the stator winding (3) is centered and fixed in the casing (25). Covering: Drive the upper cover (19) to cover the top end of the casing (25), and the inner pressing plate (20) covers the top end of the stator winding (3). Gluing: Pour the glue into the annular gap between the stator winding (3) and the inner wall of the casing (25) through the glue filling hole (22). Drying: Start the drying tube (17), and the drying tube (17) heats the outer wall of the casing (25) to accelerate the curing of the glue. Demolding: Open the upper cover (19) and the inner pressing plate (20), rotate to loosen the stator winding (3), loosen the clamping of the casing (25), take out the casing (25), and complete the glue filling.

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