A sealing fixture for the sealing surface of an electric motor housing

Abstract

This invention discloses a sealing fixture for the sealing surface of a motor housing, belonging to the field of motor housing technology. The sealing fixture includes a support assembly and a sealing assembly; the support assembly includes a base plate, a positioning stage, and a slide; the sealing assembly includes a first sealing mechanism and a second sealing mechanism. The first sealing mechanism includes a first sealing plate and a first driving member, the first driving member being located on the base plate and its output end being drively connected to the first sealing plate. The second sealing mechanism includes a second sealing plate for sealing the second sealing surface of the motor housing, a second driving member, and a reverse support seat. The second sealing plate is arranged perpendicular to the base plate, and the surface of the second sealing plate facing the second driving member has a boss, which is rotatably arranged on the output end of the second driving member. The second driving member and the reverse support seat are spaced apart on the slide. This invention provides a sealing fixture for the sealing surface of a motor housing, which can conveniently achieve automatic sealing of the motor housing.

Description

Technical Field

[0001] This invention belongs to the field of motor housing technology, and specifically relates to a sealing tooling for the sealing surface of a motor housing. Background Technology

[0002] With the rapid development of new energy vehicles, the application of battery-related components is becoming more and more common. Among them, the motor housing, as an important protective shell for the battery, is placed on the car.

[0003] In related technologies, to improve the integration of components, the electrical control box and motor housing are integrated into a single die-cast part, forming a new motor housing. Due to the overall layout, two spaced-apart sealing surfaces are formed on the motor housing (the first sealing surface is located on the top surface, and the second sealing surface is located on the side and is vertical, see...). Figure 1 Each sealing surface corresponds to a accommodating cavity (used to house the motor and controller respectively), and the two accommodating cavities are connected. Before the motor housing leaves the factory, a sealing plate is required to seal the two sealing surfaces for airtightness testing.

[0004] However, due to errors generated during the die-casting process, the second sealing surface located on the side will have a small angle of deflection in the vertical direction, which requires the corresponding sealing plate to be constantly adjusted in orientation during the sealing process, resulting in a significant reduction in sealing efficiency. Summary of the Invention

[0005] In view of the above-mentioned defects or improvement needs of the prior art, the present invention provides a sealing tool for the sealing surface of a motor housing. Its purpose is not only to facilitate the automatic sealing of the motor housing and adapt to the second sealing surface with different orientations, but also to achieve the balance of the force on the motor housing during the sealing process, so as to avoid the problem of the motor housing being pushed and scratched due to different forces.

[0006] This invention provides a sealing fixture for the sealing surface of an electric motor housing, the sealing fixture comprising a support assembly and a sealing assembly;

[0007] The support assembly includes a base plate, a positioning platform, and a sliding platform. The positioning platform is located on the base plate and is used to support the motor housing. The sliding platform is slidably arranged on the base plate and is located below the positioning platform.

[0008] The sealing assembly includes a first sealing mechanism and a second sealing mechanism. The first sealing mechanism includes a first sealing plate and a first driving member. The first driving member is located on the base plate, and its output end is kinetically connected to the first sealing plate to drive the first sealing plate to descend and seal the first sealing surface of the motor housing. The second sealing mechanism includes a second sealing plate for sealing the second sealing surface of the motor housing, a second driving member, and a reverse support seat. The second sealing plate is arranged perpendicular to the base plate. The surface of the second sealing plate facing the second driving member has a boss. The boss is rotatably arranged on the output end of the second driving member. The rotation axis of the boss is perpendicular to the base plate. A plurality of first springs located on both sides of the boss are sandwiched between the second sealing plate and the output end of the second driving member. The second driving member and the reverse support seat are spaced apart on the slide table so that the motor housing is located between the reverse support seat and the second sealing plate.

[0009] Optionally, the second sealing mechanism further includes a plurality of spaced-apart reverse support modules. Each reverse support module includes a guide tube, a second spring, and a telescopic rod. The guide tube is fixed on the reverse support seat. The telescopic rod includes a first shaft and a second shaft connected coaxially. One end of the first shaft is slidably and coaxially inserted into the guide tube. The second spring is sleeved on the first shaft, and both ends of the second spring abut against the end faces of the guide tube and the second shaft. The second shaft is arranged toward the motor housing.

[0010] Optionally, a limiting shaft arranged radially along the guide tube is fixedly inserted on the guide tube, and the first shaft has a strip hole that extends axially along the first shaft. The limiting shaft is slidably inserted into the strip hole.

[0011] Optionally, each of the reverse support modules further includes a pressure head, each pressure head being located on the end of the second shaft facing away from the first shaft, and the outer contour of each pressure head being adapted to the outer peripheral contour of the motor housing.

[0012] Optionally, the positioning platform has a plurality of spaced positioning pins and stops to position the motor housing.

[0013] Optionally, the slide has a buffer block, and the base plate has a buffer, the buffer and the buffer block being arranged opposite to each other to confine the slide to a predetermined position.

[0014] Optionally, the base plate has a first cylinder, which is used to drive the positioning platform to slide, and the direction of the sliding of the positioning platform is perpendicular to the direction of the sliding of the slide table.

[0015] Optionally, the base plate has a limiting block to limit the positioning stage, and the limiting block is located between the reverse support and the second sealing plate.

[0016] Optionally, the base plate has a second cylinder, which is connected to the slide table to drive the slide table to slide.

[0017] Optionally, the sealing fixture further includes a sensor switch and a controller. The sensor switch is located on the positioning platform to sense the motor housing, and the controller is electrically connected to the sensor switch, the first driving element, and the second driving element, respectively.

[0018] The aforementioned improved technical features can be combined with each other as long as they do not conflict with each other.

[0019] In summary, the beneficial effects of the above-described technical solutions conceived by this invention compared with the prior art are as follows:

[0020] In the sealing fixture for the sealing surface of a motor housing provided in this embodiment of the invention, when sealing the motor housing, firstly, the motor housing to be sealed is placed on a positioning table. At this time, the first sealing surface of the motor housing is arranged upwards and directly opposite the first sealing plate, and the second sealing surface of the motor housing is arranged vertically and facing the second sealing plate. Then, the first sealing plate is driven downwards by the first driving member, thereby not only pressing the motor housing on the positioning table, but also sealing the first sealing surface. Next, the second driving member generates a driving force to drive the second sealing plate to move to the right, so that the second sealing plate contacts the second sealing surface. Subsequently, the second sealing plate continues to move to the right, and the boss will rotate the second sealing plate (the rotation axis of the second sealing plate is arranged vertically), and under the elastic force of the first spring, the second sealing plate is pressed tightly against the second sealing surface, thereby sealing the second sealing surface of the motor housing. In this process, even if there is a certain deflection of the second sealing surface of different motor housings, the second sealing plate will automatically conform to the second sealing surface with different orientations during the process of the second driving member driving the second sealing plate to move to the right, avoiding manual adjustment of the orientation of the second sealing surface and improving sealing efficiency. Furthermore, during the process of the second sealing plate moving to the right to fit against the second sealing surface, the motor housing will generate a leftward reaction force of the same magnitude on the second sealing plate, the second driving component, and the slide. This causes the slide to move the reverse support seat to the left, thus engaging with the second sealing plate to clamp the motor housing. Moreover, the forces exerted on the motor housing by the reverse support seat and the second sealing plate are consistent, achieving a balance of forces on the motor housing and preventing the motor housing from being pushed and scratched due to uneven forces on both sides. Finally, a sealing test is performed on the sealed motor housing.

[0021] In other words, the sealing fixture for the motor housing sealing surface provided in this embodiment of the invention can not only conveniently achieve automatic sealing of the motor housing and adapt to the second sealing surface with different orientations, but also achieve balance of the force on the motor housing during the sealing process, avoiding the problem of the motor housing being pushed and scratched due to different forces. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of the motor housing provided in an embodiment of the present invention;

[0023] Figure 2 This is a schematic diagram of the structure of a sealing fixture for a motor housing sealing surface provided in an embodiment of the present invention;

[0024] Figure 3 This is a schematic diagram of the structure of the support component provided in an embodiment of the present invention;

[0025] Figure 4 This is a schematic diagram of the structure of the second sealing mechanism provided in an embodiment of the present invention;

[0026] Figure 5 This is a cross-sectional view of the reverse support module provided in an embodiment of the present invention.

[0027] In all the accompanying drawings, the same reference numerals denote the same technical features, specifically:

[0028] 1. Support assembly; 11. Base plate; 111. Buffer; 112. First cylinder; 113. Limiting block; 114. Second cylinder; 12. Positioning platform; 13. Slide table; 131. Buffer block; 14. Bracket; 15. Lifting plate; 16. Slide plate; 17. Equal height connecting block; 2. Sealing assembly; 21. First sealing mechanism; 211. First sealing plate; 212. First driving component; 22. Second sealing mechanism; 221. Second sealing plate; 222. Second driving component Components; 223, Reverse support seat; 224, Boss; 225, First spring; 226, Reverse support module; 2261, Guide tube; 2262, Second spring; 2263, Telescopic rod; 2264, First shaft; 2265, Second shaft; 2266, Limiting shaft; 2267, Strip hole; 2268, Pressure head; 227, First mounting plate; 228, Second mounting plate; 100, Motor housing; 110, First sealing surface; 120, Second sealing surface. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention. Furthermore, the technical features involved in the various embodiments of this invention described below can be combined with each other as long as they do not conflict with each other.

[0030] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention 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 invention.

[0031] 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 technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0032] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0033] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0034] Example:

[0035] Figure 2 This is a schematic diagram of the structure of a sealing fixture for a motor housing sealing surface provided in an embodiment of the present invention, as shown below. Figure 2 As shown, the sealing fixture includes a support assembly 1 and a sealing assembly 2.

[0036] Figure 3 This is a schematic diagram of the structure of the support component provided in an embodiment of the present invention, such as... Figure 3 As shown, the support assembly 1 includes a base plate 11, a positioning platform 12, and a slide 13. The positioning platform 12 is located on the base plate 11 and is used to support the motor housing 100. The slide 13 is slidably arranged on the base plate 11 and is located below the positioning platform 12.

[0037] The sealing assembly 2 includes a first sealing mechanism 21 and a second sealing mechanism 22. The first sealing mechanism 21 includes a first sealing plate 211 and a first driving member 212. The first driving member 212 is located on the base plate 11, and the output end of the first driving member 212 is connected to the first sealing plate 211 in a transmission connection so as to drive the first sealing plate 211 to descend and seal the first sealing surface 110 of the motor housing 100.

[0038] Figure 4 This is a schematic diagram of the structure of the second sealing mechanism provided in an embodiment of the present invention, as shown below. Figure 4 As shown, the second sealing mechanism 22 includes a second sealing plate 221 for sealing the second sealing surface 120 of the motor housing 100, a second driving member 222, and a reverse support seat 223. The second sealing plate 221 is arranged perpendicular to the base plate 11. The surface of the second sealing plate 221 facing the second driving member 222 has a boss 224. The boss 224 is rotatably arranged on the output end of the second driving member 222. The rotation axis of the boss 224 is perpendicular to the base plate 11. A plurality of first springs 225 located on both sides of the boss 224 are sandwiched between the second sealing plate 221 and the output end of the second driving member 222. The second driving member 222 and the reverse support seat 223 are spaced apart on the slide table 13 so that the motor housing 100 is located between the reverse support seat 223 and the second sealing plate 221.

[0039] For the sealing fixture for the sealing surface of a motor housing provided in this embodiment of the invention, when sealing the motor housing 100, firstly, the motor housing 100 to be sealed is placed on the positioning stage 12. At this time, the first sealing surface 110 of the motor housing 100 is arranged upward and directly opposite the first sealing plate 211, and the second sealing surface 120 of the motor housing 100 is arranged vertically and facing the second sealing plate 221. Then, the first sealing plate 211 is driven downward by the first driving member 212, thereby not only pressing the motor housing 100 on the positioning stage 12, but also sealing the first sealing surface 110. Next, the second driving member 222 generates a driving force, driving the second sealing plate 221 to move to the right, so that the second sealing plate 221 contacts the second sealing surface 120. Subsequently, the second sealing plate 221 continues to move to the right, and the boss 224 rotates the second sealing plate 221 (the rotation axis of the second sealing plate 221 is arranged vertically). Under the elastic force of the first spring 225, the second sealing plate 221 is brought into close contact with the second sealing surface 120, thereby achieving a seal on the second sealing surface 120 of the motor housing 100. In this process, even if there is a certain degree of deflection of the second sealing surface 120 of different motor housings 100, the second driving member 222 will drive the second sealing plate 221 to move to the right, causing the second sealing plate 221 to automatically conform to the second sealing surface 120 with different orientations, avoiding manual adjustment of the orientation of the second sealing surface 120 and improving sealing efficiency. Furthermore, during the process of the second sealing plate 221 moving to the right to fit against the second sealing surface 120, the motor housing 100 will generate a leftward reaction force of the same magnitude on the second sealing plate 221, the second driving member 222, and the slide table 13. This causes the slide table 13 to drive the reverse support seat 223 to move to the left, thereby engaging with the second sealing plate 221 to clamp the motor housing 100. Moreover, the forces exerted on the motor housing 100 by the reverse support seat 223 and the second sealing plate 221 are consistent, thus achieving a balance of forces on the motor housing 100 and preventing the motor housing 100 from being pushed and scratched due to different forces on both sides. Finally, a sealing test is performed on the sealed motor housing 100.

[0040] In other words, the sealing fixture for the sealing surface of the motor housing provided in this embodiment of the invention can not only conveniently achieve automatic sealing of the motor housing 100 and adapt to the second sealing surface 120 with different orientations, but also achieve balance of the force on the motor housing 100 during the sealing process, avoiding the problem of the motor housing 100 being pushed and scratched due to different forces.

[0041] It is easy to understand that after the sealing test of the motor housing 100 is completed, the first driving member 212 drives the first sealing plate 211 to move upward, the second driving member 222 drives the second sealing plate 221 to move to the left, and moves the slide table 13 and the reverse support module 226 to the right and slides them to the predetermined position, so that a large gap space is formed between the second sealing plate 221 and the reverse support seat 223, so as to place the next motor housing 100, and thus prepare for sealing the next motor housing 100.

[0042] For example, sealing rings are provided on the sealing surfaces of the first sealing plate 211 and the second sealing plate 221 to increase the sealing effect.

[0043] In one implementation of the present invention, the slide 13 has a buffer block 131, and the base plate 11 has a buffer 111. The buffer 111 and the buffer block 131 are arranged opposite to each other to limit the slide 13 to a predetermined position. The buffer 111 can achieve soft contact with the buffer block 131 and limit the slide 13, thereby ensuring that the slide 13 returns to the predetermined position (i.e., the initial position).

[0044] For example, the buffer 111 can be a module formed by a spring and a buffer block. In addition, a limit screw is provided on the base plate 11, which can achieve precise limiting of the buffer block 131. That is, during the limiting of the slide table 13, the buffer 111 is used for buffering first, and after buffering is completed, the limit screw is used for precise limiting.

[0045] In addition, the base plate 11 has a second cylinder 114, which is connected to the slide 13 to drive the slide 13 to slide. Thus, the slide 13 can be automatically reset after sealing is completed by the second cylinder 114.

[0046] It should be noted that during the process of sealing the motor housing 100 by the sealing plate, the second cylinder 114 is not ventilated at this time, and the second cylinder 114 will not affect the free sliding of the slide table 13.

[0047] In this embodiment, the support assembly 1 further includes a bracket 14, which includes a support plate and multiple columns. The multiple columns are fixed to the base plate 11, and the support plate is fixed to the multiple columns. The support plate and the base plate 11 are arranged parallel to each other at intervals. The first driving member 212 is located on the support plate, thereby supporting the first driving member 212 through the bracket. In addition, a lifting plate 15 is provided on the output end of the first driving member 212. The lifting plate 15 is guided during the lifting process by an inserted guide rod, and the lifting plate 15 and the first sealing plate 211 are connected by a spring.

[0048] For example, the first driving member 212 and the second driving member 222 can be a cylinder or a linear motor. Additionally, a first mounting plate 227 is fixedly mounted on the body of the second driving member 222, and a vertically arranged rotating shaft is provided on the second mounting plate 228. A boss 224 is tractably sleeved on the rotating shaft. The first mounting plate 227 and the second mounting plate 228 are parallel and spaced apart. The output end of the second driving member 222 passes through the first mounting plate 227 and connects to the second mounting plate 228. Multiple guide rods cooperate between the first mounting plate 227 and the second mounting plate 228 to guide the movement of the second mounting plate 228 and prevent the output end of the second driving member 222 from bending during the driving process.

[0049] Figure 5 This is a cross-sectional view of the reverse support module provided in an embodiment of the present invention, combined with... Figure 4 and Figure 5 As shown, the second sealing mechanism 22 also includes a plurality of spaced-apart reverse support modules 226. Each reverse support module 226 includes a guide tube 2261, a second spring 2262, and a telescopic rod 2263. The guide tube 2261 is fixed on the reverse support seat 223. The telescopic rod 2263 includes a first shaft 2264 and a second shaft 2265 coaxially connected. One end of the first shaft 2264 is slidably coaxially inserted into the guide tube 2261. The second spring 2262 is sleeved on the first shaft 2264, and both ends of the second spring 2262 abut against the end faces of the guide tube 2261 and the second shaft 2265. The second shaft 2265 is arranged toward the motor housing 100.

[0050] In the above embodiment, by sliding the telescopic rod 2263 inside the guide tube 2261 and compressing the second spring 2262, the motor housing 100 can be buffered, thus avoiding hard contact between the motor housing 100 and the reverse support seat 223.

[0051] For example, the number of reverse support modules 226 can be 5-7.

[0052] In this embodiment, a limiting shaft 2266 arranged radially along the guide tube 2261 is fixedly inserted on the guide tube 2261, and a strip hole 2267 is provided on the first shaft 2264. The strip holes 2267 all extend axially along the first shaft 2264, and the limiting shaft 2266 is slidably inserted into the strip hole 2267.

[0053] It is easy to understand that by moving the limiting shaft 2266 relative to the strip hole 2267, the sliding of the telescopic rod 2263 is limited, thus preventing the telescopic rod 2263 from being ejected after the second spring 2262 returns to its original position.

[0054] Furthermore, each reverse support module 226 also includes a pressure head 2268. Each pressure head 2268 is located on the end of the second shaft 2265 facing away from the first shaft 2264, and the outer contour of each pressure head 2268 is adapted to the outer peripheral contour of the motor housing 100. Thus, by adapting the pressure head 2268 to the outer peripheral contour of the motor housing 100, the motor housing 100 is prevented from being punctured by the telescopic rod 2263 during the compression process.

[0055] In this embodiment, the positioning platform 12 has a plurality of positioning pins and stops arranged at intervals to position the motor housing 100, thereby achieving the positioning of the motor housing 100 through the positioning pins and stops, ensuring that the sealing plate is accurately aligned with the corresponding sealing surface.

[0056] See also Figure 3 The base plate 11 has a first cylinder 112, which is used to drive the positioning table 12 to slide, and the direction of the sliding of the positioning table 12 is perpendicular to the direction of the sliding of the slide table 13.

[0057] In the above embodiment, the first cylinder 112 can drive the positioning platform 12 to slide, so that the positioning platform 12 and the first sealing plate 211 are misaligned, which facilitates the upper and lower motor housings 100 and avoids interference between the sealing plate and the reverse support seat 223.

[0058] In this embodiment, the base plate 11 has a limiting block 113 to limit the positioning stage 12, and the limiting block 113 is located between the reverse support seat 223 and the second sealing plate 221. The limiting block 113 can limit the sliding of the positioning stage 12, ensuring that the positioning stage 12 moves accurately to the sealing position before sealing.

[0059] For example, the support assembly 1 also includes a slide plate 16, which is fixed to the base plate 11 by a plurality of equal-height connecting blocks 17, such that the slide plate 16 and the base plate 11 are parallel and spaced apart. A first cylinder 112 is located on the slide plate 16, and a positioning platform 12 is slidably arranged on the slide plate 16. Furthermore, a sliding table 13 is located below the slide plate 16, thereby allowing the positioning platform 12 and the sliding table 13 to slide side-by-side in space.

[0060] For example, the lifting plate 15 is provided with a shaft, and the positioning table 12 is fitted with a positioning sleeve. The shaft is movably inserted into the positioning sleeve, thereby further realizing the precise positioning of the positioning table 12.

[0061] In this embodiment, the sealing fixture also includes an inductive switch and a controller. The inductive switch is located on the positioning stage 12 and is connected to the inductive motor housing 100. The controller is electrically connected to the inductive switch, the first driving member 212, and the second driving member 222.

[0062] In the above embodiment, when the induction switch senses that the motor housing 100 is placed in place, the induction switch transmits a signal to the controller, and the controller controls the first driving member 212 and the second driving member 222 to operate in sequence, thereby realizing the automatic sealing of the first sealing surface 110 and the second sealing surface 120 on the motor housing 100.

[0063] Those skilled in the art will readily understand 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 within the scope of protection of the present invention.

Claims

1. A sealing fixture for the sealing surface of an electric motor housing, characterized in that, The sealing fixture includes a support assembly (1) and a sealing assembly (2); The support assembly (1) includes a base plate (11), a positioning platform (12) and a slide (13). The positioning platform (12) is located on the base plate (11) and is used to support the motor housing (100). The slide (13) is slidably arranged on the base plate (11) and located below the positioning platform (12). The sealing assembly (2) includes a first sealing mechanism (21) and a second sealing mechanism (22). The first sealing mechanism (21) includes a first sealing plate (211) and a first driving member (212). The first driving member (212) is located on the base plate (11), and the output end of the first driving member (212) is connected to the first sealing plate (211) for transmission, so as to drive the first sealing plate (211) to descend and seal the first sealing surface (110) of the motor housing (100). The second sealing mechanism (22) includes a second sealing plate (221) for sealing the second sealing surface (120) of the motor housing (100), a second driving member (222), and a reverse support seat (223). The second sealing plate (221) is vertically... The second sealing plate (221) is arranged perpendicular to the base plate (11). The plate surface facing the second driving member (222) has a boss (224). The boss (224) is rotatably arranged on the output end of the second driving member (222). The rotation axis of the boss (224) is perpendicular to the base plate (11). A plurality of first springs (225) located on both sides of the boss (224) are sandwiched between the second sealing plate (221) and the output end of the second driving member (222). The second driving member (222) and the reverse support seat (223) are arranged at intervals on the slide table (13) so that the motor housing (100) is located between the reverse support seat (223) and the second sealing plate (221). The second sealing mechanism (22) further includes a plurality of spaced-apart reverse support modules (226). Each of the reverse support modules (226) includes a guide tube (2261), a second spring (2262), and a telescopic rod (2263). The guide tube (2261) is fixed on the reverse support seat (223). The telescopic rod (2263) includes a first shaft (2264) and a second shaft (2265) coaxially connected. One end of the first shaft (2264) is slidably coaxially inserted into the guide tube (2261). The second spring (2262) is sleeved on the first shaft (2264), and both ends of the second spring (2262) abut against the end faces of the guide tube (2261) and the second shaft (2265). The second shaft (2265) is arranged toward the motor housing (100).

2. The sealing fixture for the sealing surface of a motor housing according to claim 1, characterized in that, A limiting shaft (2266) is fixedly inserted into the guide tube (2261) and arranged radially along the guide tube (2261). The first shaft (2264) has a strip hole (2267), and the strip holes (2267) all extend axially along the first shaft (2264). The limiting shaft (2266) is slidably inserted into the strip hole (2267).

3. The sealing fixture for the sealing surface of a motor housing according to claim 1, characterized in that, Each of the reverse support modules (226) further includes a pressure head (2268), each pressure head (2268) is located on the end of the second shaft (2265) facing away from the first shaft (2264), and the outer contour of each pressure head (2268) is adapted to the outer peripheral contour of the motor housing (100).

4. The sealing fixture for the sealing surface of a motor housing according to claim 1, characterized in that, The positioning platform (12) has a plurality of spaced positioning pins and stops for positioning the motor housing (100).

5. The sealing fixture for the sealing surface of a motor housing according to claim 1, characterized in that, The slide (13) has a buffer block (131), and the base plate (11) has a buffer (111). The buffer (111) and the buffer block (131) are arranged opposite to each other to restrict the slide (13) to a predetermined position.

6. The sealing fixture for the sealing surface of a motor housing according to claim 1, characterized in that, The base plate (11) has a first cylinder (112), which is used to drive the positioning platform (12) to slide, and the direction of the sliding of the positioning platform (12) is perpendicular to the direction of the sliding of the slide table (13).

7. The sealing fixture for the sealing surface of a motor housing according to claim 6, characterized in that, The base plate (11) has a limiting block (113) to limit the positioning stage (12), and the limiting block (113) is located between the reverse support (223) and the second sealing plate (221).

8. A sealing fixture for a motor housing sealing surface according to any one of claims 1-7, characterized in that, The base plate (11) has a second cylinder (114), which is connected to the slide (13) to drive the slide (13) to slide.

9. A sealing fixture for a motor housing sealing surface according to any one of claims 1-7, characterized in that, The sealing fixture also includes an inductive switch and a controller. The inductive switch is located on the positioning platform (12) to sense the motor housing (100). The controller is electrically connected to the inductive switch, the first drive unit (212), and the second drive unit (222).

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