A stator varnishing equipment for motor processing

Abstract

This invention belongs to the field of stator impregnation technology and discloses a stator impregnation device for motor processing, including an impregnation tank, a top cover, and a hydraulic cylinder. An installation mechanism is mounted on the top of the top cover, and multiple sets of connecting ports are opened on the top of the top cover. Limiting rings are fixedly installed on the inner walls of the connecting ports, and a deepening mechanism is fixedly installed on the top of the connecting ports. The deepening mechanism includes a connecting cylinder fixedly connected to the top of the top cover. This device drives the lower edge of the piston rod, pushing the kerosene in the sealed cylinder cavity into the transmission zone. The volume of the transmission zone increases, pushing the isolation plate upwards, effectively reducing the volume of the varnish storage zone. This forces the insulating varnish stored in the varnish storage zone upwards and pushes it into the through groove. Because the through groove has a small area and a narrow design, a small amount of insulating varnish can increase the effective depth of the insulating varnish, thereby multiplying the pressure of the insulating varnish on the stator and making the impregnation of the stator more thorough.

Description

Technical Field

[0001] The invention belongs to the technical field of stator varnish dipping, in particular to a stator varnish dipping device for motor processing. Background Art

[0002] The motor stator is the stationary part of the motor, which is installed on the inner circumference of the motor housing, including an iron core and a winding (i.e. a coil composed of a conductor). The stator is generally designed in a cylindrical shape. In order to fill the gap between the stator and the winding inside it and increase the insulation and thermal conductivity of the entire stator (the winding will generate heat after being energized, and after the winding is installed on the stator, some gaps will be generated between the winding and the stator mounting slots, which will easily absorb moisture in the air for a long time, reduce the insulation performance, and the gap will lead to low heat dissipation efficiency), so it is necessary to use a paint dipping device to immerse the stator in insulating paint so that the insulating paint covers the entire surface of the stator; however, in the prior art, after the stator is immersed in the insulating paint, it will quickly fall below the insulating paint liquid level by 200MM, but this will cause the insulating paint liquid level to penetrate and soak the various parts of the stator below the stator. The penetration and wetting of the various parts of the stator below the liquid level are not strong enough, because the liquid pressure generated by the insulating paint on the stator at this depth is not enough, which may cause the gaps between the winding and the various mounting slots of the stator where the winding is installed to be difficult to fill with insulating paint, which may also cause the paint dipping work to be not thorough enough. Summary of the invention

[0003] The object of the present invention is to provide a stator varnishing equipment for motor processing to solve the problems raised in the above background technology.

[0004] In order to achieve the above-mentioned object, the present invention provides the following technical solution: a stator varnishing equipment for motor processing, comprising a varnishing box, a top cover and a hydraulic cylinder, wherein a mounting mechanism is installed on the top of the top cover;

[0005] The mounting mechanism comprises a motor mounted on the top of the top cover, the output shaft of the motor is mounted with a connecting plate, the top of the connecting plate is fixedly connected with a sealing ring, which abuts against the bottom of the top cover, the bottom of the connecting plate is fixedly mounted with a fixing frame, the outer surface of the fixing frame is fixedly connected with multiple groups of mounting columns, and the outer surface of the mounting column is mounted with a stator;

[0006] The inner wall of the paint dipping box is sealed with an isolation plate, and the inner cavity of the paint dipping box is sealed and divided into a paint storage area and a transmission area by the isolation plate. The inner cavity of the transmission area is filled with kerosene. The top of the isolation plate is fixedly connected with a piston mechanism, and the top of the piston mechanism is fixedly connected with a connecting frame. The bottom of the top cover is provided with a lower edge made of rubber, and the lower edge abuts against the connecting frame. The top of the top cover is provided with multiple groups of connecting ports 2, and a limiting ring 2 is fixedly installed on the inner wall of the connecting port 2, and a depth increasing mechanism is fixedly installed on the top of the connecting port 2;

[0007] The depth increasing mechanism comprises a connecting tube fixedly connected to the top of the top cover, the connecting port 2 and the inner wall sealing sleeve of the connecting tube are provided with a telescopic column, a through groove penetrating from top to bottom is provided in the middle of the telescopic column, and a plurality of groups of power-assisting grooves are provided on the inner wall of the through groove, the bottom end of the telescopic column abuts against the limiting ring 2 and is fixedly installed with a buoyancy member;

[0008] The paint storage area is filled with insulating paint, and the transmission area is filled with kerosene.

[0009] As a preferred solution of the present invention, a connecting port 1 connected to the piston mechanism is provided on the top of the isolation plate, a limiting ring 1 is fixedly installed on the bottom of the inner wall of the connecting port 1, and the kerosene enters the piston mechanism from the transmission area along the limiting ring 1 and the connecting port 1.

[0010] As a preferred solution of the present invention, the piston mechanism includes a sealing cylinder fixedly connected to the top of the isolation plate, the sealing cylinder is connected to the connecting port, the inner wall sealing sleeve of the sealing cylinder is provided with a piston column and a spring, the two ends of the spring are elastically connected to the piston column and a limit ring respectively, the kerosene seal abuts against the bottom end of the piston column, and the top end of the piston column is fixedly connected to the connecting frame.

[0011] As a preferred solution of the present invention, the shape of the fixing frame is a hollow regular octagon, the mounting columns are respectively connected to eight groups of outer peripheral surfaces of the fixing frame, and a placement groove is opened in the middle of the top of the outer surface of the mounting column.

[0012] As a preferred solution of the present invention, the buoyancy member is adapted to be fitted on the inner annular surface of the second limiting ring, the buoyancy member is made of lightweight foam, and is bonded to the bottom end of the telescopic column by glue.

[0013] As a preferred solution of the present invention, the cross-sectional shape of the power-boosting groove is a quarter-circle that is symmetrically distributed on the left and right, and the top of the inner wall of the power-boosting groove is designed to be flat.

[0014] As a preferred solution of the present invention, the telescopic end of the hydraulic cylinder is fixedly connected to the top of the top cover, and the hydraulic cylinder is used to drive the top cover downward into the paint dipping box.

[0015] As a preferred solution of the present invention, an adapting cavity is opened in the middle of the isolation plate, and the bottom of the inner wall of the adapting cavity is designed to be stepped downward relative to the surface of the isolation plate.

[0016] The beneficial effects of the present invention are as follows:

[0017] 1. The device has been redesigned to improve the insulating paint coverage of the stator without increasing the amount of insulating paint used and the volume of the paint dipping box. The insulating paint is received by a movable isolation plate that is sealed and clamped with the inner wall of the paint dipping box. When the top cover drives the mounting mechanism and the stator to move downward, the bottom of the top cover abuts against the connecting frame to form a seal, which seals the top opening of the paint dipping box and drives the lower edge of the piston column at the same time, and pushes the kerosene in the inner cavity of the sealing cylinder into the transmission area. The volume of the transmission area increases, and the isolation plate is pushed upward, which equivalently reduces the volume of the paint storage area, so that the insulating paint stored in the paint storage area is forced to be pushed upward and pushed into the through groove. Since the through groove is designed to be small and narrow, a small amount of insulating paint can increase the equivalent depth of the insulating paint, thereby doubling the insulating paint pressure on the stator and making the stator's paint dipping work more thorough.

[0018] 2. At the same time, by utilizing the sealing sleeve relationship between the telescopic column and the connecting tube, the telescopic column can move upward under the thrust and buoyancy of the insulating paint, and the buoyancy is provided by the buoyancy member. When the insulating paint is placed in the power-assisting groove opened on the inner wall of the through groove, an upward thrust is generated, and the friction between the connecting tube and the telescopic column is overcome upward in combination with the buoyancy, so that the telescopic column can move upward along the axis of the connecting tube and the capacity of the deepening mechanism to store the insulating paint is increased. With this design, after the stator is completely entered into the insulating paint and the top cover and the connecting frame are abutted, only a small distance is needed to move the top cover downward to easily fill the connecting tube and the telescopic column, thereby improving the reliability and practicality of the device.

[0019] 3. Finally, eight groups of mounting columns are connected by an octagonal fixed frame, so that the device can dip the stator into paint in a maximum of eight groups each time. The eight groups of mounting columns are distributed in concentric circles and rotate in a circle driven by a motor. Each rotation of 45° can make one group of mounting columns located in a horizontal right position. At this time, the stator can be mounted on it, making the device more convenient. By opening a placement slot on the top of the mounting column, the contact area of ​​the mounting column when mounting the stator can be reduced, thereby increasing the contact area of ​​the stator for paint dipping. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a front schematic diagram of the structure of the present invention;

[0021] Figure 2 It is a front cutaway schematic diagram of the structure of the present invention;

[0022] Figure 3 For the present invention Figure 2 A magnified schematic diagram of the structure at center A;

[0023] Figure 4 For the present invention Figure 3 A-1 is an enlarged schematic diagram;

[0024] Figure 5 It is a side cutaway schematic diagram of the structure of the present invention;

[0025] Figure 6 For the present invention Figure 5 A magnified schematic diagram of the structure at B in the middle;

[0026] Figure 7 It is a schematic diagram of the separation of the isolation plate, the piston mechanism and the connection frame of the present invention;

[0027] Figure 8 It is a schematic diagram of the separation of the mounting mechanism and the stator of the present invention;

[0028] Fig. 9 It is a schematic diagram of the separation of the depth increasing mechanism of the present invention.

[0029] In the figure:

[0030] 1. Paint dipping box;

[0031] 11. Isolation plate; 111. Communication port 1; 112. Limiting ring 1; 113. Adapter cavity;

[0032] 12. Piston mechanism; 121. Sealing cylinder; 122. Spring; 123. Piston rod;

[0033] 13. Connection frame;

[0034] 2. Top cover; 21. Second connecting port; 22. Second limiting ring;

[0035] 3. Installation mechanism; 31. Motor; 32. Connecting plate; 33. Sealing ring; 34. Fixing frame; 35. Mounting column; 36. Placement slot;

[0036] 4. Hydraulic cylinder;

[0037] 5. Depth increasing mechanism; 51. Connecting tube; 52. Telescopic column; 53. Through slot; 54. Assisting slot; 55. Buoyancy member;

[0038] 6. Stator;

[0039] 7. Paint storage area;

[0040] 8. Transmission area. DETAILED DESCRIPTION

[0041] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0042] like Figures 1 to 9 As shown, an embodiment of the present invention provides a stator varnishing device for motor processing, comprising a varnishing box 1, a top cover 2 and a hydraulic cylinder 4, wherein a mounting mechanism 3 is mounted on the top of the top cover 2;

[0043] The mounting mechanism 3 includes a motor 31 mounted on the top of the top cover 2, the output shaft of the motor 31 is mounted with a connecting plate 32, the top of the connecting plate 32 is fixedly connected with a sealing ring 33, which abuts against the bottom of the top cover 2, the bottom of the connecting plate 32 is fixedly mounted with a fixing frame 34, the outer surface of the fixing frame 34 is fixedly connected with multiple groups of mounting columns 35, and the outer surface of the mounting columns 35 is mounted with a stator 6;

[0044] The inner wall of the paint dipping box 1 is sealed with an isolation plate 11, and the inner cavity of the paint dipping box 1 is sealed and divided into a paint storage area 7 and a transmission area 8 by the isolation plate 11. The inner cavity of the transmission area 8 is filled with kerosene. The top of the isolation plate 11 is fixedly connected with a piston mechanism 12, and the top of the piston mechanism 12 is fixedly connected with a connecting frame 13. The bottom of the top cover 2 is provided with a lower edge made of rubber, and the lower edge abuts against the connecting frame 13. The top of the top cover 2 is provided with multiple groups of connecting ports 21, and a limiting ring 22 is fixedly installed on the inner wall of the connecting port 21, and a depth increasing mechanism 5 is fixedly installed on the top of the connecting port 21;

[0045] The depth increasing mechanism 5 comprises a connecting tube 51 fixedly connected to the top of the top cover 2, a telescopic column 52 is provided in the inner wall sealing sleeve of the connecting port 21 and the connecting tube 51, a through groove 53 which passes through from top to bottom is provided in the middle of the telescopic column 52, a plurality of groups of assisting grooves 54 are provided in the inner wall of the through groove 53, the bottom end of the telescopic column 52 abuts against the second limiting ring 22, and a buoyancy member 55 is fixedly installed thereon;

[0046] The paint storage area 7 is filled with insulating paint, and the transmission area 8 is filled with kerosene;

[0047] The device has been redesigned to improve the varnish covering capacity of the stator 6 by the insulating varnish without increasing the amount of insulating varnish used and the volume of the varnish dipping box 1. The insulating varnish is received by a movable isolation plate 11 which is sealed and clamped with the inner wall of the varnish dipping box 1. When the top cover 2 drives the mounting mechanism 3 and the stator 6 to move downward, the bottom of the top cover 2 abuts against the connecting frame 13 to form a seal, thereby sealing the top opening of the varnish dipping box 1 and driving the lower edge of the piston column 123 at the same time, and pushing the kerosene in the inner cavity of the sealing cylinder 121 into the transmission area 8. The volume of the transmission area 8 increases, and the isolation plate 11 is pushed upward, which equivalently reduces the volume of the paint storage area 7, so that the insulating varnish stored in the paint storage area 7 is forced to be pushed upward and pushed into the through groove 53. Since the through groove 53 is designed to be small and narrow, a small amount of insulating varnish can increase the equivalent depth of the insulating varnish, thereby doubling the insulating varnish pressure on the stator 6 and making the varnish dipping of the stator 6 more thorough.

[0048] At the same time, by utilizing the sealing sleeve relationship between the telescopic column 52 and the connecting tube 51, the telescopic column 52 can move upward under the thrust and buoyancy of the insulating paint, and the buoyancy is provided by the buoyancy member 55. When the insulating paint is placed in the auxiliary groove 54 opened on the inner wall of the through groove 53, an upward thrust is generated, and combined with the buoyancy, the friction between the connecting tube 51 and the telescopic column 52 is overcome upward, so that the telescopic column 52 can move upward along the axis of the connecting tube 51 and increase the capacity of the deepening mechanism 5 to store insulating paint. With this design, after the stator 6 is completely inserted into the insulating paint and the top cover 2 and the connecting frame 13 are abutted, only the top cover 2 needs to be moved downward a small distance to easily fill the connecting tube 51 and the telescopic column 52, thereby improving the reliability and practicality of the device.

[0049] Finally, eight groups of mounting columns 35 are connected by an octagonal fixing frame 34, so that the device can varnish the stator 6 to a maximum of eight groups at a time. The eight groups of mounting columns 35 are distributed in concentric circles and rotate in a circle driven by the motor 31. Each time a group of mounting columns 35 rotates 45°, a group of mounting columns 35 can be located in a horizontal right position. At this time, the stator 6 can be mounted on it, making the device more convenient. By providing a placement groove 36 on the top of the mounting column 35, the contact area of ​​the mounting column 35 when mounting the stator 6 can be reduced, thereby increasing the contact area of ​​the stator 6 for varnish immersion.

[0050] The top of the isolation plate 11 is provided with a connecting port 111 connected to the piston mechanism 12, and a limiting ring 112 is fixedly installed at the bottom of the inner wall of the connecting port 111. Kerosene enters the piston mechanism 12 from the transmission area 8 along the limiting ring 112 and the connecting port 111.

[0051] The connecting port 111 connects the sealing cylinder 121 and the inner cavity of the transmission area 8. When the piston column 123 and the connecting frame 13 move downward under the push of the top cover 2, the kerosene in the inner cavity of the sealing cylinder 121 will be synchronously pushed downward to the transmission area 8, and then synchronously push the isolation plate 11 upward.

[0052] The piston mechanism 12 includes a sealing cylinder 121 fixedly connected to the top of the isolation plate 11, the sealing cylinder 121 is connected to the communication port 111, the inner wall sealing sleeve of the sealing cylinder 121 is provided with a piston column 123 and a spring 122, the two ends of the spring 122 are elastically connected to the piston column 123 and the limit ring 112 respectively, the kerosene seal abuts against the bottom end of the piston column 123, and the top end of the piston column 123 is fixedly connected to the connection frame 13;

[0053] The piston mechanism 12 serves to change the volume of the transmission area 8. The piston rod 123 is used to generate a downward displacement from the top cover 2. The kerosene in the inner cavity of the sealing cylinder 121 will be pushed downward into the transmission area 8 synchronously, and then the isolation plate 11 will be pushed upward synchronously.

[0054] The shape of the fixing frame 34 is a hollow regular octagon, the mounting posts 35 are respectively connected to eight groups of outer peripheral surfaces of the fixing frame 34, and a placement groove 36 is opened in the middle of the top of the outer surface of the mounting post 35;

[0055] By providing an octagonal fixing frame 34 to connect eight groups of mounting columns 35, the device can achieve a maximum of eight groups of paint for the stator 6 each time. The eight groups of mounting columns 35 are distributed in concentric circles and rotate in a circle under the drive of the motor 31 to complete the mounting of the stator 6 each time.

[0056] The buoyancy member 55 is adapted to be matched with the inner ring surface of the second limiting ring 22. The buoyancy member 55 is made of lightweight foam and is bonded to the bottom end of the telescopic column 52 by glue.

[0057] The buoyancy member 55 is very light and is made of foam. It can generate a buoyancy much greater than its own weight and assist in pushing the telescopic column 52 upward, thereby increasing the overall storage capacity of the deepening mechanism 5 for insulating paint.

[0058] The cross-sectional shape of the boosting groove 54 is a quarter-circle that is symmetrically distributed on the left and right sides, and the top of the inner wall of the boosting groove 54 is designed to be flat;

[0059] As shown in FIG. 4 , the insulating paint filled in the inner wall of the assisting groove 54 generates a vertical upward thrust, which is transmitted to the telescopic column 52 to assist the telescopic column 52 to move upward.

[0060] The telescopic end of the hydraulic cylinder 4 is fixedly connected to the top of the top cover 2, and the hydraulic cylinder 4 is used to drive the top cover 2 downward into the paint dipping box 1;

[0061] The hydraulic cylinder 4 is used to drive the top cover 2 to perform lifting movements and provide support for the top cover 2 .

[0062] The middle of the isolation plate 11 is provided with an adapting cavity 113, and the bottom of the inner wall of the adapting cavity 113 is designed to be stepped downward relative to the surface of the isolation plate 11;

[0063] The adapting cavity 113 is located below the isolation plate 11 , and when it moves upward, it just covers the circular area formed by the opening of the placement slot 36 , so as to prevent the stator 6 and the isolation plate 11 from getting stuck when they come into contact.

[0064] Working principle:

[0065] When the device is working, the hydraulic cylinder 4 drives the top cover 2 to move up and down, and enter or leave the inner cavity of the paint dipping box 1;

[0066] First, the stator 6 needs to be mounted. When the hydraulic cylinder 4 drives the top cover 2 and the mounting mechanism 3 to move upward to the highest point, the stator 6 is transported horizontally to the mounting column 35 located on the right side of the horizontal plane by the manipulator. After the manipulator is released, the inner wall of the stator 6 is supported against the top of the outer surface of the mounting column 35, the motor 31 is started, and the connecting plate 32, the sealing ring 33 and the fixing frame 34 are driven to rotate 45°, so that the mounting column 35 mounted with the stator 6 rotates away from the rightmost side, and the next group of mounting columns 35 are driven to the rightmost position of the horizontal plane, and then the second mounting is performed. When the motor 31 drives the fixing frame 34 and the mounting column 35 to rotate a full circle, the outer peripheral surface of the fixing frame 34 can mount eight groups of stators 6 through the mounting columns 35.

[0067] Then, the hydraulic cylinder 4 is started, and the mounting mechanism 3 and the stator 6 are driven downward into the paint dipping box 1, so that the stator 6 is gradually immersed in the insulating paint liquid level in the paint storage area 7. When the bottom edge of the top cover 2 abuts against the connecting frame 13, the connecting frame 13 and the piston column 123 are pushed downward to move, and the spring 122 is compressed, so that the kerosene in the inner cavity of the sealing cylinder 121 is pushed into the transmission area 8, so that the isolation plate 11 is pushed upward as a whole by the hydraulic pressure. At this time, the volume of the paint storage area 7 is reduced, and the volume of the transmission area 8 is increased, so that the insulating paint in the paint storage area 7 is pushed upward to the connecting cylinder 51, and the insulating paint first enters the through groove 53 and the boosting groove 54, and by acting on the boosting groove 54, the telescopic column 52 is pushed upward to move;

[0068] Finally, the page of insulating paint moves up to the inner wall of the through groove 53, which undoubtedly increases several times relative to the paint immersion depth of the stator 6, thereby making the paint immersion of the stator 6 more thorough. When the hydraulic cylinder 4 drives the top cover 2, the mounting mechanism 3, the deepening mechanism 5 and the stator 6 to move up, the isolation plate 11 moves downward under the action of the insulating paint, and pushes the kerosene in the transmission area 8 back into the inner cavity of the sealing cylinder 121. The piston column 123 moves up and resets again under the action of the rebound force of the spring 122 and the kerosene hydraulic pressure, and the insulating paint will retreat to the original liquid level.

[0069] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0070] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A stator varnishing device for motor processing, comprising a varnishing box (1), a top cover (2) and a hydraulic cylinder (4), wherein a mounting mechanism (3) is mounted on the top of the top cover (2); The mounting mechanism (3) comprises a motor (31) mounted on the top of the top cover (2); a connecting plate (32) is mounted on the output shaft of the motor (31); a sealing ring (33) is fixedly connected to the top of the connecting plate (32) and abuts against the bottom of the top cover (2); a fixing frame (34) is fixedly mounted on the bottom of the connecting plate (32); a plurality of groups of mounting columns (35) are fixedly connected to the outer surface of the fixing frame (34); and a stator (6) is mounted on the outer surface of the mounting column (35); Features: The inner wall of the paint dipping box (1) is sealed with an isolation plate (11), and the inner cavity of the paint dipping box (1) is sealed and divided into a paint storage area (7) and a transmission area (8) by the isolation plate (11). The inner cavity of the transmission area (8) is filled with kerosene. The top of the isolation plate (11) is fixedly connected to a piston mechanism (12), and the top of the piston mechanism (12) is fixedly connected to a connecting frame (13). The bottom of the top cover (2) is provided with a lower edge made of rubber, and the lower edge abuts against the connecting frame (13). The top of the top cover (2) is provided with a plurality of groups of connecting ports (21), and a limiting ring (22) is fixedly installed on the inner wall of the connecting port (21). The top of the connecting port (21) is fixedly installed with a depth increasing mechanism (5); The depth increasing mechanism (5) comprises a connecting tube (51) fixedly connected to the top of the top cover (2); the connecting port 2 (21) and the inner wall sealing sleeve of the connecting tube (51) are provided with a telescopic column (52); a through groove (53) penetrating from top to bottom is provided in the middle of the telescopic column (52); the inner wall of the through groove (53) is provided with a plurality of groups of assisting grooves (54); the bottom end of the telescopic column (52) is in contact with the second limiting ring (22) and is fixedly provided with a buoyancy member (55); A connecting port (111) connected to the piston mechanism (12) is provided at the top of the isolation plate (11); a limit ring (112) is fixedly installed at the bottom of the inner wall of the connecting port (111); the kerosene enters the piston mechanism (12) from the transmission area (8) along the limit ring (112) and the connecting port (111); the telescopic end of the hydraulic cylinder (4) is fixedly connected to the top of the top cover (2); the hydraulic cylinder (4) is used to drive the top cover (2) downward into the paint dipping box (1).

2. The stator varnishing equipment for motor processing according to claim 1, characterized in that: The piston mechanism (12) comprises a sealing cylinder (121) fixedly connected to the top of the isolation plate (11); the sealing cylinder (121) is connected to the communication port 1 (111); a sealing sleeve on the inner wall of the sealing cylinder (121) is provided with a piston column (123) and a spring (122); two ends of the spring (122) are elastically connected to the piston column (123) and the limiting ring 1 (112) respectively; the kerosene seal abuts against the bottom end of the piston column (123); and the top end of the piston column (123) is fixedly connected to the connection frame (13).

3. The stator varnishing equipment for motor processing according to claim 2, characterized in that: The shape of the fixing frame (34) is a hollow regular octagon, the mounting columns (35) are respectively connected to eight groups of outer peripheral surfaces of the fixing frame (34), and a placement groove (36) is provided in the middle of the top of the outer surface of the mounting column (35).

4. The stator varnishing equipment for motor processing according to claim 3 is characterized in that: The buoyancy member (55) is adapted to be matched with the inner annular surface of the second limiting ring (22). The buoyancy member (55) is made of light foam and is bonded to the bottom end of the telescopic column (52) by glue.

5. The stator varnishing equipment for motor processing according to claim 4, characterized in that: The cross-sectional shape of the boosting groove (54) is a quarter circle that is symmetrically distributed on the left and right, and the top of the inner wall of the boosting groove (54) is designed to be flat.

6. The stator varnishing equipment for motor processing according to claim 5, characterized in that: An adapting cavity (113) is provided in the middle of the isolation plate (11), and the bottom of the inner wall of the adapting cavity (113) is designed to be stepped downward relative to the surface of the isolation plate (11).

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