A seal device and method for driving a motor housing into and out of a waterway

Abstract

The application discloses a sealing device and method for driving motor casing to enter and exit water, and belongs to the technical field of driving motor casing. The sealing device comprises a machine table and a sealing assembly; the machine table is provided with a support, a clamp plate, a clamp and a plug disc; the clamp plate is rotatably arranged on the machine table; the clamp is located on the clamp plate; and a plurality of plugs are placed on the plug disc; the sealing assembly comprises a driving module, a main shaft and a connecting shaft; the driving module is located on the support; the connecting shaft is provided with a cavity, an air inlet and a plurality of through holes arranged in the radial direction; the top end of the cavity is communicated with the air inlet; a piston is slidably inserted at the bottom end of the cavity in the Z-axis direction; an elastic element is sleeved on the piston rod; a ball is movably inserted in each through hole; and the bottom end of the piston rod is provided with a plurality of inclined surfaces. The sealing device for driving motor casing to enter and exit water can automatically seal the water inlet and outlet of the driving motor casing.

Description

Technical Field

[0001] The present invention belongs to the technical field of drive motor casings, and in particular relates to a sealing device and method for a water inlet and outlet of a drive motor casing. Background Art

[0002] The drive motor is the power source of new energy vehicles. It must possess excellent heat dissipation performance to meet its continuous output capacity, making the design of the drive motor's water channel particularly important. The water channel is located within the drive motor casing (a tubular structure) and dissipates heat from the motor. The water channel has spaced-apart inlet and outlet ports (distributed radially) at either end.

[0003] In related technologies, the drive motor housing needs to be machined after die-casting. Aluminum chips generated during machining can easily enter the waterway through the water inlet or outlet, blocking the waterway and affecting the heat dissipation performance of the drive motor housing. Therefore, before machining, workers will use tools to manually insert plugs (after inserting the tool into the corresponding groove on the top of the plug, the plug is transferred and inserted) to sequentially block the water inlet and outlet of the drive motor housing to prevent subsequent aluminum chips from entering.

[0004] However, in the process of sealing the drive motor housing, not only will the labor of workers be increased, but it may also lead to the problem of inadequate sealing. Summary of the Invention

[0005] In response to the above-mentioned defects or improvement needs of the prior art, the present invention provides a sealing device and method for the water inlet and outlet of a drive motor casing, the purpose of which is to automatically seal the water inlet and outlet of the drive motor casing, which not only greatly reduces the labor of workers, but also effectively avoids the problem of inadequate manual sealing.

[0006] To achieve the above objectives, in a first aspect, the present invention provides a sealing device for a water inlet and outlet of a drive motor housing, the sealing device comprising a machine platform and a sealing assembly;

[0007] The machine platform is provided with a bracket, a fixture plate, a fixture and a blocking disk. The fixture plate is perpendicular to the machine platform and is rotatably arranged on the machine platform. The fixture is located on the fixture plate to vertically clamp the drive motor housing on the fixture plate. The blocking disk is provided with a plurality of plugs arranged at intervals.

[0008] The sealing assembly includes a driving module, a main shaft and a connecting shaft. The driving module is located on the bracket. The driving module is used to drive the main shaft to move along the X-axis, Y-axis and Z-axis directions. The connecting shaft and the main shaft are arranged and connected along the Z-axis direction. The bottom end of the connecting shaft is used to be inserted into the groove of the plug. The connecting shaft has a cavity, an air inlet and a plurality of radially arranged through holes. The top of the cavity is connected to the air inlet. A piston is slidably inserted into the bottom end of the cavity along the Z-axis direction. A piston rod is vertically fixed to the bottom surface of the piston. An elastic member is sleeved on the piston rod, and the two ends of the elastic member are respectively against the piston and the connecting shaft to drive the piston to reset. A ball is movably inserted in each of the through holes. The outer periphery of the bottom end of the piston rod has a plurality of inclined surfaces, and each inclined surface is arranged opposite to the corresponding through hole, so that when the piston rod moves downward along the Z-axis, the corresponding ball is driven to extend out of the connecting shaft and be stuck in the corresponding groove of the plug.

[0009] Optionally, the machine platform has a mounting seat, and the fixture plate is rotatably arranged on the mounting seat.

[0010] Optionally, a motor is inserted into the mounting seat, and an output end of the motor is vertically connected to the fixture plate.

[0011] Optionally, the clamp comprises a plurality of rotary clamping cylinders, which are arranged at intervals along the circumference of the clamp plate.

[0012] Optionally, the fixture plate has a plurality of positioning pins arranged at intervals, and each positioning pin is used to be inserted into a corresponding positioning hole in the driving motor housing.

[0013] Optionally, an air intake pipe is provided on the main shaft, and the air intake pipe is connected to the air inlet.

[0014] Optionally, the driving module includes a first linear module, a second linear module and a third linear module. The first linear module is located on the bracket, and the output end of the first linear module is transmission connected to the second linear module to drive the second linear module to move along the X-axis direction. The output end of the second linear module is transmission connected to the third linear module to drive the third linear module to move along the Y-axis direction. The output end of the third linear module is transmission connected to the main shaft to drive the main shaft to move along the Z-axis direction.

[0015] Optionally, the plugging disk has a plurality of positioning grooves arranged at intervals, and each positioning groove is used for inserting a plug.

[0016] Optionally, a protective shell is provided on the machine platform, and the protective shell covers the bracket, the fixture plate, the fixture and the blocking disk.

[0017] In a second aspect, the present invention provides a method for sealing a water inlet and outlet of a drive motor housing. The sealing method is based on the sealing device described in the first aspect, and the sealing method includes:

[0018] S1. Place the drive motor housing on the fixture plate and fix the drive motor housing on the fixture plate using the fixture, with the water inlet or outlet of the drive motor housing arranged along the Z-axis direction and facing upward;

[0019] S2, the driving module moves the main shaft so that the bottom end of the connecting shaft is inserted into the groove of the plug on the plugging disk, and the air is inflated into the air inlet through the inflation device, thereby driving the piston and the piston rod to move downward along the Z-axis direction, so that the corresponding ball driven by the inclined surface extends out of the connecting shaft and is stuck in the corresponding groove of the plug;

[0020] S3, moving the main shaft by the driving module so that the plug is inserted into the water inlet or the water outlet of the driving motor housing, and the air inlet is connected to the outside atmosphere for degassing, and the elastic member drives the piston and the piston rod to rise along the Z-axis direction, so that the inclined surface is separated from the corresponding ball, thereby releasing the ball from the plug;

[0021] S4, the driving module conveys the main shaft to move, and each of the balls moves toward the direction close to the inclined surface, and the connecting shaft is separated from the plug, and the fixture plate is rotated so that the water outlet or water inlet of the driving motor housing is arranged along the Z-axis direction and upward, and steps S2-S3 are repeated until another plug is inserted into the water outlet or water inlet of the driving motor housing.

[0022] The above-mentioned improved technical features can be combined with each other as long as they do not conflict with each other.

[0023] In general, the above technical solutions conceived by the present invention have the following beneficial effects compared with the prior art:

[0024] For a sealing device for the water inlet and outlet of a drive motor housing provided by an embodiment of the present invention, when sealing the water inlet and outlet of the drive motor housing, first, the drive motor housing is placed on a fixture plate, and the drive motor housing is fixed to the fixture plate by a fixture, thereby fixing the drive motor housing on the fixture plate. At this time, the axial direction of the drive motor housing is arranged horizontally, and its water inlet or water outlet is arranged vertically (i.e., arranged in the Z-axis direction), and is upward and located at the top of the drive motor housing. Then, the drive module moves the main shaft so that the bottom end of the connecting shaft is inserted into the groove of the plug on the plugging disk, and the air inlet is inflated by the inflation device, thereby driving the piston and the piston rod to move downward along the Z-axis direction, so that the corresponding ball driven by the inclined surface extends out of the connecting shaft and is stuck in the groove of the corresponding plug. Inflating the air inlet will increase the air pressure in the top of the cavity, thereby pushing the piston and the piston rod to overcome the elastic force of the elastic member and move downward, thereby causing the inclined surface to move downward. As the inclined plane moves downward, the corresponding balls are pushed outward, and multiple balls are pushed out of the connecting shaft and stuck in the groove of the plug. At this time, the plug is stuck at the bottom end of the connecting shaft.

[0025] Next, the driving module moves the main shaft (i.e., the plug is transported away from the plugging disk), so that the plug is inserted into the water inlet or water outlet of the driving motor housing, thereby automatically and reliably inserting the plug into the water inlet or water outlet. The air inlet is connected to the outside atmosphere for degassing, and the elastic member drives the piston and the piston rod to rise along the Z-axis direction, so that the inclined surface is separated from the corresponding ball, thereby releasing the ball from the plug. Then, the driving module conveys the main shaft to move, and during the upward movement of the connecting shaft, the balls move toward the direction close to the inclined surface under the friction of the groove, and the connecting shaft is separated from the plug, thereby automatically completing the blocking of the water inlet or water outlet. Finally, the fixture plate is rotated so that the water outlet or water inlet of the drive motor housing is arranged along the Z-axis direction (that is, the water outlet or water inlet is rotated to be arranged vertically upward, that is, located at the top of the drive motor housing), and the above steps are repeated until the other plug is securely inserted into the water outlet or water inlet of the drive motor housing, thereby automatically completing the blocking of the water outlet or water inlet, greatly reducing the labor of workers, and because the sealing is completed by the sealing device, the blocking is uniform and reliable, effectively avoiding the problem of inadequate manual blocking.

[0026] That is to say, the sealing device for the water inlet and outlet of the drive motor casing provided by the embodiment of the present invention can automatically seal the water inlet and outlet of the drive motor casing, which not only greatly reduces the labor of workers, but also effectively avoids the problem of inadequate manual sealing. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 1 is a structural diagram of a sealing device for a water inlet and outlet of a drive motor housing provided by an embodiment of the present invention;

[0028] Figure 2 is a schematic structural diagram of a connecting shaft provided by an embodiment of the present invention;

[0029] Figure 3 yes Figure 2 sectional view of

[0030] Figure 4 This is a flow chart of a method for sealing the water inlet and outlet of a drive motor housing provided by an embodiment of the present invention.

[0031] In all the drawings, the same reference numerals represent the same technical features, specifically:

[0032] 1. Machine; 11. Bracket; 12. Fixture plate; 13. Fixture; 14. Blocking plate; 141. Plug; 15. Mounting seat; 16. Protective shell; 2. Sealing assembly; 21. Drive module; 22. Spindle; 221. Inlet pipe; 23. Connecting shaft; 231. Cavity; 232. Inlet port; 233. Through hole; 234. Piston; 235. Piston rod; 2351. Elastic part; 236. Inclined surface; 237. Blocking cap; 24. Ball; 100. Drive motor housing. DETAILED DESCRIPTION

[0033] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only intended to illustrate the present invention and are not intended to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

[0034] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0035] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0036] In the present invention, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediate medium; internal communication between two components, or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0037] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0038] Example:

[0039] Figure 1 FIG. 1 is a structural diagram of a sealing device for a water inlet and outlet of a drive motor housing provided by an embodiment of the present invention, as shown in FIG. Figure 1 As shown, the sealing device includes a machine platform 1 and a sealing assembly 2.

[0040] The machine 1 has a bracket 11, a fixture plate 12, a fixture 13 and a blocking disk 14. The fixture plate 12 is perpendicular to the machine 1 and is rotatably arranged on the machine 1 (that is, the fixture plate 12 is arranged vertically and the rotation axis of the fixture plate 12 is arranged horizontally). The fixture 13 is located on the fixture plate 12 to vertically clamp the drive motor housing 100 on the fixture plate 12. A plurality of spaced plugs 141 are placed on the blocking disk 14.

[0041] The sealing assembly 2 includes a driving module 21, a main shaft 22 and a connecting shaft 23. The driving module 21 is located on the bracket 11. The driving module 21 is used to drive the main shaft 22 to move along the X-axis direction, the Y-axis direction and the Z-axis direction. The connecting shaft 23 and the main shaft 22 are arranged and connected along the Z-axis direction. The bottom end of the connecting shaft 23 is used to be inserted into the groove of the plug 141.

[0042] Figure 2 is a structural diagram of a connecting shaft provided by an embodiment of the present invention, Figure 3 yes Figure 2 Cross-sectional view, combined with Figure 2 and Figure 3 As shown, the connecting shaft 23 has a cavity 231, an air inlet 232 and a plurality of radially arranged through holes 233. The top of the cavity 231 is connected to the air inlet 232. The bottom end of the cavity 231 is slidably inserted with a piston 234 along the Z-axis direction. A piston rod 235 is vertically fixed to the bottom surface of the piston 234. An elastic member 2351 is sleeved on the piston rod 235, and the two ends of the elastic member 2351 are respectively against the piston 234 and the connecting shaft 23 to drive the piston 234 to reset. A ball 24 is movably inserted in each through hole 233. The outer periphery of the bottom end of the piston rod 235 has a plurality of inclined surfaces 236, and each inclined surface 236 is arranged opposite to the corresponding through hole 233, so that when the piston rod 235 moves downward along the Z-axis direction, the corresponding ball 24 is driven to extend out of the connecting shaft 23 and be stuck in the groove of the corresponding plug 141.

[0043] For a sealing device for the water inlet and outlet of a drive motor casing provided in an embodiment of the present invention, when sealing the water inlet and outlet of the drive motor casing 100, first, the drive motor casing 100 is placed on a clamp plate 12, and the drive motor casing 100 is fixed to the clamp plate 12 by a clamp 13, thereby fixing the drive motor casing 100 on the clamp plate 12. At this time, the axial direction of the drive motor casing 100 is arranged horizontally, and its water inlet or water outlet is arranged vertically (i.e., arranged in the Z-axis direction), and is facing upward and located at the top of the drive motor casing 100. Then, the drive module 21 moves the main shaft 22, causing the bottom end of the connecting shaft 23 to be inserted into the groove of the plug 141 on the plug disc 14, and inflating the air into the air inlet 232 through the inflation device, thereby driving the piston 234 and the piston rod 235 to move downward along the Z-axis direction, causing the inclined surface 236 to drive the corresponding ball 24 to extend out of the connecting shaft 23 and then be stuck in the corresponding groove of the plug 141. Inflating the air inlet 232 will increase the air pressure in the top of the cavity 231, thereby pushing the piston 234 and the piston rod 235 to overcome the elastic force of the elastic member 2351 and move downward, thereby causing the inclined surface 236 to move downward. As the inclined surface 236 moves downward, it pushes the corresponding ball 24 outward. Multiple balls 24 will be pushed out of the connecting shaft 23 and stuck in the groove of the plug 141. At this time, the plug 141 is stuck to the bottom end of the connecting shaft 23.

[0044] Next, the driving module 21 moves the main shaft 22 (i.e., the plug 141 is transported away from the plugging disk 14), so that the plug 141 is inserted into the water inlet or water outlet of the driving motor housing 100, thereby automatically and reliably inserting the plug 141 into the water inlet or water outlet. The air inlet 232 is connected to the outside atmosphere for degassing, and the elastic member 2351 drives the piston 234 and the piston rod 235 to rise along the Z-axis direction, so that the inclined surface 236 is separated from the corresponding ball 24, thereby releasing the blocking of the ball 24 on the plug 141. Then, the driving module 21 conveys the main shaft 22 to move, and during the upward movement of the connecting shaft 23, each ball 24 moves toward the direction close to the inclined surface 236 under the friction of the groove, and the connecting shaft 23 is separated from the plug 141, thereby automatically completing the blocking of the water inlet or water outlet. Finally, rotate the fixture plate 12 so that the water outlet or water inlet of the drive motor housing 100 is arranged along the Z-axis direction (that is, the water outlet or water inlet is rotated to be arranged vertically upward, that is, located at the top of the drive motor housing 100), and repeat the above steps until the other plug 141 is securely inserted into the water outlet or water inlet of the drive motor housing 100, thereby automatically completing the blocking of the water outlet or water inlet, greatly reducing the labor of workers, and because the sealing is completed by the sealing device, the blocking is uniform and reliable, effectively avoiding the problem of inadequate manual blocking.

[0045] That is to say, the sealing device for the water inlet and outlet of the drive motor housing provided by the embodiment of the present invention can automatically seal the water inlet and outlet of the drive motor housing 100, which not only greatly reduces the labor of workers, but also effectively avoids the problem of inadequate manual sealing.

[0046] For example, the number of the balls 24 may be 3-4, etc., and they are evenly distributed along the circumference of the connecting shaft 23 .

[0047] Exemplarily, the inner wall of the connecting shaft 23 is stepped in the Z-axis direction, so that the bottom end of the elastic member 2351 can abut against a step.

[0048] Furthermore, a plug cap 237 is inserted at the top of the connecting shaft 23. Below the plug cap 237 is a cavity 231, with the air inlet located within the plug cap 237. The ends of the plug cap 237 are inserted into the connecting shaft 23 and the main shaft 22, respectively. The main shaft 22 connects the output end of the drive module 21 to the connecting shaft 23.

[0049] Continue to see Figure 1 The machine platform 1 has a mounting seat 15, and the fixture plate 12 is rotatably arranged on the mounting seat 15. The mounting seat 15 supports the fixture plate 12.

[0050] Furthermore, a motor is inserted into the mounting seat 15, and the output end of the motor is vertically connected to the fixture plate 12. The mounting seat 15 plays the role of mounting the motor, and the motor can realize the automatic rotation of the fixture plate 12, thereby automatically completing the switching of the water inlet and outlet of the drive motor housing 100.

[0051] In one embodiment of the present invention, the clamp 13 includes a plurality of rotary clamping cylinders, which are arranged at intervals along the circumference of the clamp plate 12. The plurality of rotary clamping cylinders can reliably clamp the drive motor housing 100 on the clamp plate 12.

[0052] It should be noted that, in other embodiments of the present invention, the clamp 13 may also be a screw, a buckle or other clamping structure, and the present invention is not limited thereto.

[0053] For example, the fixture plate 12 has a plurality of spaced-apart positioning pins, each of which is used to be inserted into a corresponding positioning hole in the drive motor housing 100. The positioning pins can accurately position the drive motor housing 100, ensuring that after it is placed in place, its water inlet or outlet is arranged vertically upward.

[0054] In addition, the main shaft 22 is provided with an air inlet pipe 221, which is connected to the air inlet 232. When the main shaft 22 moves, it will move with the air inlet pipe 221, thereby realizing the intake or exhaust of the air inlet 232.

[0055] In one implementation of the present invention, the driving module 21 includes a first linear module, a second linear module and a third linear module. The first linear module is located on the bracket 11. The output end of the first linear module is transmission connected to the second linear module to drive the second linear module to move along the X-axis direction. The output end of the second linear module is transmission connected to the third linear module to drive the third linear module to move along the Y-axis direction. The output end of the third linear module is transmission connected to the main shaft 22 to drive the main shaft 22 to move along the Z-axis direction.

[0056] That is to say, the first linear module can lead the main shaft 22 and the connecting shaft 23 to move along the X-axis direction, the second linear module can lead the main shaft 22 and the connecting shaft 23 to move along the Y-axis direction, and the third linear module can lead the main shaft 22 and the connecting shaft 23 to move along the Z-axis direction, so that the plugs 141 at different positions on the plugging disk 14 can be taken in turn, and the plugs 141 can be transported and inserted into the water inlet or outlet.

[0057] It should be noted that the driving module 21 may also be a robot or other displacement mechanisms, and the present invention does not limit this.

[0058] Exemplarily, the plugging disk 14 has a plurality of positioning grooves arranged at intervals, each positioning groove is used to insert the plug 141, thereby achieving precise positioning of the plug 141 and ensuring that the plug 141 can be accurately removed after the connecting shaft 23 is displaced.

[0059] In addition, the machine 1 has a protective shell 16, which covers the bracket 11, the fixture plate 12, the fixture 13 and the blocking plate 14. The protective shell 16 plays a role of covering and protecting the bracket 11, the driving module 21, the fixture plate 12, the fixture 13 and the blocking plate 14.

[0060] For example, the machine 1 is further provided with a control button, which can control the start and stop of the motor and the drive module 21, thereby performing a shutdown inspection in an abnormal state.

[0061] Figure 4 FIG. 1 is a flow chart of a method for sealing the water inlet and outlet of a drive motor housing provided by an embodiment of the present invention, such as Figure 4 As shown, the sealing method is based on the above-mentioned sealing device, and the sealing method includes:

[0062] S1. Place the driving motor housing 100 on the fixture plate 12 and fix the driving motor housing 100 on the fixture plate 12 by the fixture 13. The water inlet or outlet of the driving motor housing 100 is arranged along the Z-axis direction and upward.

[0063] S2. The driving module 21 moves the main shaft 22, so that the bottom end of the connecting shaft 23 is inserted into the groove of the plug 141 on the plug disk 14, and the air is inflated into the air inlet 232 through the inflation device, thereby driving the piston 234 and the piston rod 235 to move downward along the Z-axis direction, so that the inclined surface 236 drives the corresponding ball 24 to extend out of the connecting shaft 23 and then be stuck in the groove of the corresponding plug 141.

[0064] S3. The main shaft 22 is moved by the driving module 21, so that the plug 141 is inserted into the water inlet or outlet of the driving motor housing 100, and the air inlet 232 is connected to the outside atmosphere for degassing. The elastic member 2351 drives the piston 234 and the piston rod 235 to rise along the Z-axis direction, so that the inclined surface 236 is separated from the corresponding ball 24, thereby releasing the ball 24 from the blocking of the plug 141.

[0065] S4, the driving module 21 conveying main shaft 22 moves, and each ball 24 moves toward the direction close to the inclined surface 236, and separates the connecting shaft 23 from the plug 141, and rotates the clamp plate 12 so that the water outlet or water inlet of the driving motor housing 100 is arranged along the Z-axis direction and upward, and repeats steps S2-S3 until another plug 141 is inserted into the water outlet or water inlet of the driving motor housing 100.

[0066] The embodiment of the present invention provides a sealing method for the water inlet and outlet of a drive motor housing, which can automatically seal the water inlet and outlet of the drive motor housing 100, not only greatly reducing the labor of workers, but also effectively avoiding the problem of inadequate manual sealing.

[0067] It will be easily understood by those skilled in the art that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A sealing device for the water inlet and outlet of a drive motor housing, characterized in that: The sealing device comprises a machine platform (1) and a sealing assembly (2); The machine (1) is provided with a bracket (11), a fixture plate (12), a fixture (13) and a plugging disk (14); the fixture plate (12) is perpendicular to the machine (1) and is rotatably arranged on the machine (1); the fixture (13) is located on the fixture plate (12) to vertically clamp the drive motor housing (100) on the fixture plate (12); and a plurality of plugs (141) arranged at intervals are placed on the plugging disk (14); The sealing assembly (2) includes a driving module (21), a main shaft (22) and a connecting shaft (23), wherein the driving module (21) is located on the bracket (11), and the driving module (21) is used to drive the main shaft (22) to move along the X-axis direction, the Y-axis direction and the Z-axis direction. The connecting shaft (23) and the main shaft (22) are arranged and connected along the Z-axis direction. The bottom end of the connecting shaft (23) is used to be inserted into the groove of the plug (141). The connecting shaft (23) has a cavity (231), an air inlet (232) and a plurality of through holes (233) arranged in a radial direction. The top end of the cavity (231) is connected to the air inlet (232), and the bottom end of the cavity (231) is slidably inserted with a piston (233) along the Z-axis direction. 4) A piston rod (235) is vertically fixed to the bottom surface of the piston (234), an elastic member (2351) is sleeved on the piston rod (235), and the two ends of the elastic member (2351) are respectively against the piston (234) and the connecting shaft (23) to drive the piston (234) to reset, and a ball (24) is movably inserted in each through hole (233), and the outer periphery of the bottom end of the piston rod (235) has a plurality of inclined surfaces (236), and each inclined surface (236) is arranged relative to the corresponding through hole (233), so that when the piston rod (235) moves downward along the Z-axis direction, the corresponding ball (24) is driven to extend out of the connecting shaft (23) and then be clamped in the groove of the corresponding plug (141); The machine platform (1) has a mounting seat (15), and the fixture plate (12) is rotatably arranged on the mounting seat (15); A motor is inserted into the mounting seat (15), and an output end of the motor is vertically connected to the fixture plate (12); An air intake pipe (221) is provided on the main shaft (22), and the air intake pipe (221) is in communication with the air intake port (232).

2. A sealing device for the water inlet and outlet of a drive motor housing according to claim 1, characterized in that: The clamp (13) comprises a plurality of rotary clamping cylinders, which are arranged at intervals along the circumference of the clamp plate (12).

3. A sealing device for the water inlet and outlet of a drive motor housing according to claim 1, characterized in that: The fixture plate (12) has a plurality of positioning pins arranged at intervals, and each positioning pin is used to be inserted into a corresponding positioning hole of the drive motor housing (100).

4. A sealing device for the water inlet and outlet of a drive motor housing according to any one of claims 1 to 3, characterized in that: The driving module (21) includes a first linear module, a second linear module and a third linear module, wherein the first linear module is located on the bracket (11), the output end of the first linear module is transmission-connected with the second linear module to drive the second linear module to move along the X-axis direction, the output end of the second linear module is transmission-connected with the third linear module to drive the third linear module to move along the Y-axis direction, and the output end of the third linear module is transmission-connected with the main shaft (22) to drive the main shaft (22) to move along the Z-axis direction.

5. A sealing device for a water inlet and outlet of a drive motor housing according to any one of claims 1 to 3, characterized in that: The plugging disc (14) has a plurality of positioning grooves arranged at intervals, each of the positioning grooves being used for inserting a plug (141).

6. A sealing device for a water inlet and outlet of a drive motor housing according to any one of claims 1 to 3, characterized in that: The machine (1) is provided with a protective shell (16), and the protective shell (16) covers the bracket (11), the fixture plate (12), the fixture (13) and the blocking plate (14).

7. A method for sealing the water inlet and outlet of a drive motor housing, characterized in that: The sealing method is based on the sealing device according to any one of claims 1 to 6, and the sealing method includes: S1, placing the drive motor housing (100) on the fixture plate (12), and fixing the drive motor housing (100) on the fixture plate (12) by the fixture (13), with the water inlet or outlet of the drive motor housing (100) arranged along the Z-axis direction and facing upward; S2, the driving module (21) moves the main shaft (22) so that the bottom end of the connecting shaft (23) is inserted into the groove of the plug (141) on the plugging disk (14), and the air is inflated into the air inlet (232) through the air inflating device, thereby driving the piston (234) and the piston rod (235) to move downward along the Z-axis direction, so that the inclined surface (236) drives the corresponding ball (24) to extend out of the connecting shaft (23) and then be stuck in the groove of the corresponding plug (141); S3, the driving module (21) moves the main shaft (22) so that the plug (141) is inserted into the water inlet or the water outlet of the driving motor housing (100), and the air inlet (232) is connected to the outside atmosphere for degassing, and the elastic member (2351) drives the piston (234) and the piston rod (235) to rise along the Z-axis direction, so that the inclined surface (236) is separated from the corresponding ball (24), thereby releasing the blocking of the ball (24) on the plug (141); S4, the driving module (21) conveys the main shaft (22) to move, and each of the balls (24) moves in a direction close to the inclined surface (236), so that the connecting shaft (23) is separated from the plug (141), and the fixture plate (12) is rotated so that the water outlet or water inlet of the driving motor housing (100) is arranged along the Z-axis direction and upward, and steps S2-S3 are repeated until another plug (141) is inserted into the water outlet or water inlet of the driving motor housing (100).

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