A rounding device for motor stator

Abstract

The present invention discloses a rounding device for a motor stator, comprising: a support seat, comprising a bottom plate, a top plate, and a connecting column connected between the bottom plate and the top plate, the top plate being provided with a first avoidance hole; an insulator rounding mechanism, comprising a rounding component arranged below the top plate and a first driving component driving the rounding component to round a plurality of insulators; a T-shaped iron core insertion mechanism, comprising a T-shaped iron core pushing component arranged above the top plate and a second driving component driving the T-shaped iron core pushing component to insert a plurality of T-shaped iron cores into a plurality of insulators; and a pressing component, which is detachably arranged above the T-shaped iron core pushing component. The present invention automatically splices a plurality of insulators into a cylindrical shape through the insulator rounding mechanism, and assembles a plurality of T-shaped iron cores into a plurality of insulators through the T-shaped iron core insertion mechanism, thereby effectively shortening the total time for rounding the stator, improving the efficiency of rounding the stator, and liberating manpower.

Description

Technical Field

[0001] The invention relates to the technical field of motor stator assembly, and in particular to a rounding device for a motor stator. Background Art

[0002] The motor stator is cylindrical in shape as a whole, and is composed of multiple insulators arranged in a circular array and connected in sequence. The motor stator also includes a T-shaped iron core plugged into each insulator. The assembly quality of the stator (especially the overall roundness) has a crucial impact on the performance, running smoothness and reliability of the automobile motor.

[0003] In the prior art, manual assembly is usually used to complete the assembly of automobile motor stators. In actual production, the following problems occur: 1. The manual assembly process of automobile motor stators takes a long time and the production efficiency is low; 2. The final assembly quality of automobile motor stators is greatly affected by the workers' operating experience and real-time emotions, which is not conducive to quality control and the defect rate remains high. Summary of the invention

[0004] In order to solve at least one technical problem in the prior art, the present invention provides a rounding device for a motor stator.

[0005] To achieve the above-mentioned invention object, the technical solution adopted by the present invention is: a rounding device for a motor stator, comprising: a support seat, comprising a bottom plate and a top plate arranged in parallel and spaced apart, and a connecting column connected between the bottom plate and the top plate, wherein the top plate is provided with a first avoidance hole;

[0006] An insulator rounding mechanism, used for rounding a plurality of insulators, comprises a rounding assembly arranged below the top plate and a first driving assembly driving the rounding assembly to round the plurality of insulators;

[0007] A T-shaped iron core insertion mechanism, used for assembling the plurality of T-shaped iron cores inserted on the plurality of the insulators into the plurality of the insulators, comprising a T-shaped iron core pushing assembly arranged above the top plate and a second driving assembly driving the T-shaped iron core pushing assembly to insert the plurality of the T-shaped iron cores into the plurality of the insulators;

[0008] And a pressing assembly is detachably arranged above the T-shaped iron core pushing assembly, and is used to confine the plurality of insulators in a circular mechanism in a vertical direction.

[0009] In some embodiments, the circle forming assembly includes a support plate fixed below the top plate, a plurality of insulator limit units that can move radially along the support plate, and a first rotating plate disposed below the support plate and connected to the first driving assembly, wherein the first rotating plate is provided with a plurality of first cam grooves;

[0010] The insulator limiting unit includes a first cam follower movably arranged in the first cam groove. The first cam follower is driven to move in the first cam groove by the rotation of the first turntable, thereby driving the plurality of insulator limiting units to move toward the central axis direction of the support plate.

[0011] In some embodiments, a plurality of the first cam grooves are arranged in a circular array on the first rotating disk;

[0012] The first cam groove is in the shape of an elongated strip, and the first cam groove gradually approaches the central axis of the first rotating disk along the length extension direction.

[0013] In some embodiments, the insulator limiting unit further includes a connecting strip extending radially along the support disk and slidably connected to the support disk, and an insulator limiting block for supporting and limiting the insulator;

[0014] The insulator limit block is in a fan-shaped shape, fixed to one end of the connecting strip and movably arranged in the first avoidance hole, the first cam follower is fixed to the other end of the connecting strip, and the first cam follower and the insulator limit block are respectively arranged on the opposite end surfaces of the connecting strip.

[0015] In some embodiments, the first driving assembly includes a servo motor fixed on the base plate, a driving gear fixed on the output shaft of the servo motor, and a rack meshing with the driving gear, and the rack is fixedly connected to the first turntable.

[0016] In certain embodiments, the T-shaped core pushing assembly includes a limit plate, a plurality of arc processing parts, a second rotating plate, and a plurality of second cam followers;

[0017] The limiting plate is fixed above the top plate, the limiting plate is provided with a third avoidance hole coaxial with the first avoidance hole, the second rotating plate is arranged above the limiting plate, the second rotating plate is provided with a plurality of second cam grooves and a fourth avoidance hole coaxial with the first avoidance hole, and the circle forming component is partially arranged in the third avoidance hole and the fourth avoidance hole;

[0018] The arc processing member is arranged between the limiting plate and the second rotating plate and can slide along the radial direction of the limiting plate, and a plurality of the arc processing members are arranged on the periphery of a plurality of the insulators fixed on the circle forming assembly;

[0019] The second cam follower is fixed to one end of the arc processing member and is arranged in the second cam groove.

[0020] In certain embodiments, the limiting plate is further provided with a plurality of limiting grooves extending radially along the limiting plate and communicating with the third avoidance hole, and the arc processing part is movably arranged in the limiting grooves.

[0021] In some embodiments, the second driving assembly includes a cylinder fixed to the bottom plate and a pusher connected to the cylinder, and the pusher is partially disposed above the second turntable;

[0022] At least two cams are arranged on the edge of the upper surface of the second rotating disk, and the pushing member is partially arranged between the two cams.

[0023] In some embodiments, the pressing assembly includes a pressing plate, a connecting seat arranged at the center of the pressing plate, a mechanical hook spring configured in the connecting seat, and a connecting clamping column fixed at the center of the insulator circular mechanism. A through groove is opened at the lower end of the connecting seat, and the connecting clamping column is connected with the mechanical hook spring after passing through the through groove.

[0024] In some embodiments, the connecting clamp includes a connecting rod and a clamping portion arranged at the top of the connecting rod, the clamping portion is conical, the maximum diameter of the clamping portion is larger than the connecting rod, and the clamping portion is clamped with the mechanical hook spring.

[0025] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art:

[0026] The present invention automatically splices multiple insulators into a cylindrical shape through an insulator rounding mechanism, and assembles multiple T-shaped iron cores into multiple insulators through a T-shaped iron core insertion mechanism, which effectively shortens the total time for stator rounding, improves the efficiency of stator rounding, and liberates manpower; at the same time, compared with manual assembly, the motor stator is rounded by the rounding equipment, which greatly improves the assembly quality of the motor stator rounding assembly and reduces the product defective rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 A schematic diagram showing the overall structure of a rounding device for a motor stator in one embodiment of the present invention is shown;

[0028] Figure 2 A schematic diagram of the three-dimensional structure of an insulator rounding mechanism in one embodiment of the present invention is shown;

[0029] Figure 3 A top view of an insulator rounding mechanism in one embodiment of the present invention is shown;

[0030] Figure 4 A three-dimensional structural schematic diagram of a T-shaped iron core insertion mechanism in one embodiment of the present invention is shown;

[0031] Figure 5 A schematic diagram of the three-dimensional structure of a pressing assembly in one embodiment of the present invention is shown;

[0032] Figure 6 A cross-sectional view of a pressing assembly in one embodiment of the present invention is shown. DETAILED DESCRIPTION

[0033] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0034] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequential order. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present application described here. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0035] In this application, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings. These terms are mainly used to better describe the utility model and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0036] In addition, some of the above terms may be used to express other meanings in addition to indicating orientation or positional relationship. For example, the term "on" may also be used to express a certain dependency or connection relationship in some cases. For those skilled in the art, the specific meanings of these terms in this utility model can be understood according to specific circumstances.

[0037] In addition, the terms "installed", "set", "provided with", "connected", "connected", and "socketed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0038] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0039] Reference Figures 1 to 6 , provides a motor stator rounding device, including a support base 1, an insulator rounding mechanism 2 for rounding a plurality of insulators, a T-shaped iron core insertion mechanism 3 for inserting a plurality of T-shaped iron cores into a plurality of the insulators, and a pressing assembly 4 for limiting the position of the plurality of the insulators in the vertical direction.

[0040] The support base 1 is used to support and connect the insulator circular mechanism 2 and the T-shaped iron core insertion mechanism 3. The support base 1 includes a bottom plate 11 and a top plate 12 arranged in parallel and spaced apart, and a connecting column 13 connected between the bottom plate 11 and the top plate 12. The top plate 12 is provided with a first avoidance hole.

[0041] The insulator rounding mechanism 2 includes a rounding component 21 disposed below the top plate 12 and a first driving component 22 for driving the rounding mechanism 2 to round a plurality of insulators.

[0042] The circle forming component 21 includes a support plate 212 fixed below the top plate 12, a plurality of insulator limiting units for supporting and limiting the insulator, and a first rotating plate 211 disposed below the support plate 212 and connected to the first driving component 22, wherein the insulator limiting unit can move along the radial direction of the support plate 212. The first rotating plate 211 is provided with a plurality of first cam grooves 2110, the first cam grooves 2110 are in the shape of long strips, the first cam grooves 2110 gradually approach the center of the first rotating plate 211 along the length extension direction, and the plurality of first cam grooves 2110 are arranged in a circular array on the first rotating plate 211. The insulator limiting unit includes a first cam follower 215 arranged in the first cam groove 2110. The first driving component 22 drives the first turntable 211 to rotate around the central axis of the first turntable 211 to drive the first cam follower 215 to move in the first cam groove 2110, thereby pushing the insulator limiting unit to move radially along the support plate 212 toward the central axis of the support plate 212, so that the multiple insulators placed on the multiple insulator limiting units are spliced ​​into a cylindrical shape.

[0043] Furthermore, the insulator limiting unit also includes a connecting strip 213 extending radially along the support plate 212 and slidably connected to the support plate 212, and an insulator limiting block 214 fixed at one end of the connecting strip 213 and movably arranged in the first avoidance hole. The insulator limiting block 214 is fan-shaped and is used to support and limit the insulator. The first cam follower 215 is fixed at the other end of the connecting strip 213.

[0044] As a preferred embodiment, the support plate 212 is provided with a second avoidance hole coaxial with the first avoidance hole and a plurality of movable grooves 2120 extending along the radial direction of the support plate 212. The plurality of movable grooves 2120 are interconnected with the second avoidance hole, and the number of the movable grooves 2120 is equal to the number of the connecting strips 213. The connecting strip 213 is movably arranged in the movable groove 2120 of the support plate 212. When the first driving assembly 22 drives the first rotating disk 211 to rotate around the central axis of the first rotating disk 211 and drives the first cam follower 215 to move in the first cam groove 2110, the first cam follower 215 drives the connecting strip 213 to move in the movable groove 2120 of the support plate 212 toward the central axis of the support plate 212, so that the plurality of insulators placed on the plurality of insulator limit blocks 214 are spliced ​​into a cylindrical shape.

[0045] As another preferred embodiment, the lower surface of the support disk 212 is provided with a plurality of slideways extending in the radial direction, and the number of the slideways is equal to the number of the connecting strips 213. A slider is provided on the upper surface of the connecting strip 213, and the connecting strip 213 is slidably connected to the support disk 212 through the slider and the slideway, and the insulator limit block 214 is movably arranged in the second avoidance hole and exposed from the upper surface of the second avoidance hole. When the first driving component 22 drives the first rotating disk 211 to rotate around the central axis of the first rotating disk 211 and drives the first cam follower 215 to move in the first cam groove 2110, the first cam follower 215 drives the connecting strip 213 to move along the slideway toward the central axis of the support disk 212, so that the multiple insulators placed on the multiple insulator limit blocks 214 are spliced ​​into a cylindrical shape.

[0046] Furthermore, the first turntable 211 is provided with a rotation hole 2111 , and the bottom plate 11 is provided with a support shaft, which is disposed in the rotation hole 2111 and rotatably connected to the first turntable 211 via a bearing.

[0047] The first driving assembly 22 includes a servo motor 221 fixed on the base plate 11, a driving gear 22 fixed on the output shaft of the servo motor 221, and a rack 223 meshing with the driving gear 22. The rack 223 is fixedly connected to the first turntable 211. The driving gear 22 is driven to rotate by the servo motor 221. The meshing of the driving gear 22 and the rack 223 drives the first turntable 211 to rotate around the central axis of the first turntable 211. The rotation direction of the first turntable 211 is adjusted by the forward and reverse rotation of the servo motor 221.

[0048] The T-core insertion mechanism 3 includes a T-core pushing assembly 31 disposed above the top plate 12 and a second driving assembly 32 for driving the T-core pushing assembly 31 to insert a plurality of T-cores into a plurality of insulators.

[0049] The T-shaped core pushing assembly 31 includes a limit plate 312, a plurality of arc processing parts 313, a second turntable 311 and a plurality of second cam followers 314. The limit plate 312 is fixed above the top plate 12. The limit plate 312 is provided with a third avoidance hole coaxial with the first avoidance hole. The second turntable 311 is provided above the limit plate 312. The second turntable 311 is provided with a fourth avoidance hole coaxial with the first avoidance hole and a plurality of second cam grooves 3110. The insulator limit block 214 is arranged in the third avoidance hole and the fourth avoidance hole. The plurality of arc processing parts 313 are arranged between the limit plate 312 and the second turntable 311 and are slidably connected to the limit plate 312. The plurality of arc processing parts 313 are arranged on the outer periphery of the plurality of insulators on the insulator limit block 214. The second cam follower 314 is fixed at one end of the arc processing part 313 and is arranged in the second cam groove 3110. The second driving component 32 drives the second turntable 311 to rotate around the central axis of the second turntable 311 to drive the second cam follower 314 to move in the second cam groove 3110, so that multiple arc processing parts 313 move radially along the limit plate 312 toward the insulator, thereby inserting multiple T-shaped iron cores into multiple insulators.

[0050] The second cam groove 3110 is in the shape of an elongated strip, and the second cam groove 3110 gradually approaches the center of the second rotating disk 311 along the length extension direction. A plurality of second cam grooves 3110 are arranged in a circular array on the second rotating disk 311 .

[0051] In some embodiments, the limiting plate 312 is further provided with a plurality of limiting grooves extending radially along the limiting plate 312 and communicating with the third avoidance hole, and the arc processing part 313 is movably configured in the limiting grooves.

[0052] The second driving assembly 32 includes a cylinder 321 fixed on the bottom plate 11 and a pusher 322 connected to the cylinder 321, and the pusher 322 is partially arranged above the second rotating disk 311. Two cams 315 are arranged on the edge of the upper surface of the second rotating disk 311, and the pusher 322 is partially arranged between the two cams 315. The pusher 322 is driven to move forward and backward by the extension and contraction of the telescopic rod of the cylinder 321, and the pusher 322 abuts against the cam 315 and pushes the second rotating disk 311 to rotate around the central axis of the second rotating disk 311.

[0053] Furthermore, the second driving assembly 32 also includes two limiting components 323 arranged on the moving path of the pushing member 322. The two limiting components 323 are arranged on both sides of the pushing member 322 to limit the moving distance of the pushing member 322, that is, to limit the rotation angle of the second turntable 311.

[0054] The pressing component 4 is detachably arranged above the T-shaped iron core pushing component 31. The pressing component includes a pressing plate 41, a connecting seat 42 arranged at the center of the pressing plate 41, a mechanical hook spring 43 arranged in the connecting seat 42, and a connecting clamping column 44 fixed at the center of the insulator circular mechanism 2. A through groove is formed at the lower end of the connecting seat 42, and the connecting clamping column 44 is clamped with the mechanical hook spring 43 after passing through the through groove.

[0055] The lower end of the connecting column 44 is fixed on the supporting shaft and is arranged in the middle of the plurality of insulator limit blocks 214 . The connecting column 44 passes through the second avoidance hole, the first avoidance hole, the third avoidance hole and the fourth avoidance hole in sequence and then emerges from the upper end of the second turntable 311 .

[0056] In some embodiments, the connecting column 44 includes a connecting rod 441 and a clamping portion 442 disposed at the top of the connecting rod 441 . The clamping portion 442 is conical in shape. The maximum diameter of the clamping portion 442 is larger than that of the connecting rod 441 . The clamping portion 442 is clamped with the mechanical hook spring 43 .

[0057] The operation process of the rounding device of the motor stator of the present invention is as follows:

[0058] 1. Fix a plurality of insulators on a plurality of insulator limit blocks 214 respectively, insert a plurality of T-shaped iron cores into the plurality of insulators, and then fix the pressing plate 41 of the pressing assembly 4 on the top of the plurality of insulators so that the insulators cannot rise and fall in the rounding device of the motor stator;

[0059] 2. Start the servo motor 221 to drive the first turntable 211 to rotate through the first drive assembly 22, so that the plurality of insulator limit blocks 214 move toward the direction close to the central axis of the support disk 212, so as to splice the plurality of insulators into a cylindrical shape;

[0060] 3. Start the cylinder 321 and drive the second turntable 311 to rotate through the second drive assembly 32, so that the multiple arc processing parts 313 move toward the insulator, so as to statically assemble the multiple T-shaped cores in the multiple insulators.

[0061] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to the above embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the above embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A rounding device for a motor stator, characterized in that: include: A support seat (1) comprises a bottom plate (11) and a top plate (12) which are arranged in parallel and spaced apart from each other, and a connecting column (13) connected between the bottom plate (11) and the top plate (12), wherein the top plate (12) is provided with a first avoidance hole; An insulator rounding mechanism (2) for rounding a plurality of insulators, comprising a rounding component (21) arranged below the top plate (12) and a first driving component (22) for driving the rounding component (21) to round the plurality of insulators, the rounding component (21) comprising a support plate (212) fixed below the top plate (12), a plurality of insulator limiting units that can move radially along the support plate (212), and a first rotating plate (211) arranged below the support plate (212) and connected to the first driving component (22), the first rotating plate (211) being provided with a plurality of first cam grooves (2110), the insulator limiting unit comprising a first cam follower (215) movably arranged in the first cam groove (2110), the first rotating plate (211) being driven to move the first cam follower (215) in the first cam groove (2110) by the rotation of the first rotating plate (211), thereby driving the plurality of insulator limiting units to move in the direction of the central axis of the support plate (212); The T-shaped iron core insertion mechanism (3) is used to assemble a plurality of T-shaped iron cores inserted on a plurality of the insulators into the plurality of the insulators, comprising a T-shaped iron core pushing assembly (31) arranged above the top plate (12) and a second driving assembly (32) driving the T-shaped iron core pushing assembly (31) to insert the plurality of the T-shaped iron cores into the plurality of the insulators, the T-shaped iron core pushing assembly (31) comprising a limit plate (312), a plurality of arc processing parts (313), a second rotating disk (311) and a plurality of second cam followers (314), the plurality of arc processing parts (313) being arranged between the limit plate (312) and the second rotating disk (311) and being connected to the plurality of the insulators. The limiting plate (312) is slidably connected, the second rotating plate (311) is provided with a plurality of second cam grooves (3110), the second cam follower (314) is fixed to one end of the circular arc processing piece (313) and is arranged in the second cam groove (3110), and the second cam follower (314) drives the second rotating plate (311) to rotate around the central axis of the second rotating plate (311) through the second driving assembly (32) to drive the second cam follower (314) to move in the second cam groove (3110), so that the plurality of circular arc processing pieces (313) move in a direction close to the insulator along the radial direction of the limiting plate (312); as well as The pressing assembly (4) is detachably arranged above the T-shaped iron core pushing assembly (31) and is used to confine the plurality of insulators in a circular mechanism in a vertical direction.

2. The rounding device for a motor stator according to claim 1, characterized in that: A plurality of the first cam grooves (2110) are arranged in a circular array on the first rotating disk (211); The first cam groove (2110) is in the shape of an elongated strip, and the first cam groove (2110) gradually approaches the central axis of the first rotating disk (211) along the length extension direction.

3. The rounding device for a motor stator according to claim 1, characterized in that: The insulator limiting unit further comprises a connecting strip (213) extending radially along the support disk (212) and slidably connected to the support disk (212), and an insulator limiting block (214) for supporting and limiting the insulator; The insulator stop block (214) is in a fan-shaped shape, the insulator stop block (214) is fixed to one end of the connecting strip (213) and movably arranged in the first avoidance hole, the first cam follower (215) is fixed to the other end of the connecting strip (213), and the first cam follower (215) and the insulator stop block (214) are respectively arranged on opposite end surfaces of the connecting strip (213).

4. The rounding device for a motor stator according to claim 1, characterized in that: The first driving assembly (22) comprises a servo motor (221) fixed on the base plate (11), a driving gear (222) fixed on an output shaft of the servo motor (221), and a rack (223) meshing with the driving gear (222); the rack (223) is fixedly connected to the first rotating disk (211).

5. The rounding device for a motor stator according to claim 1, characterized in that: The limiting plate (312) is fixed above the top plate (12), the limiting plate (312) is provided with a third avoidance hole coaxial with the first avoidance hole, the second rotating plate (311) is arranged above the limiting plate (312), the second rotating plate (311) is provided with a plurality of second cam grooves (3110) and a fourth avoidance hole coaxial with the first avoidance hole, and the circle forming component (21) is partially arranged in the third avoidance hole and the fourth avoidance hole; The arc processing member (313) is arranged between the limiting disk (312) and the second rotating disk (311) and can slide along the radial direction of the limiting disk (312); a plurality of the arc processing members (313) are arranged on the periphery of a plurality of the insulators fixed on the circle forming component (21); The second cam follower (314) is fixed to one end of the circular arc processing piece (313) and is arranged in the second cam groove (3110).

6. The rounding device for a motor stator according to claim 5, characterized in that: The limiting plate (312) is further provided with a plurality of limiting grooves extending radially along the limiting plate (312) and communicating with the third avoidance hole, and the arc processing part (313) is movably arranged in the limiting grooves.

7. The rounding device for a motor stator according to claim 5, characterized in that: The second driving assembly (32) comprises a cylinder (321) fixed on the base plate (11) and a pushing member (322) connected to the cylinder (321); the pushing member (322) is partially arranged above the second rotating disk (311); at least two cams (315) are arranged on the edge of the upper surface of the second rotating disk (311); and the pushing member (322) is partially arranged between the two cams (315).

8. The rounding device for a motor stator according to any one of claims 1 to 7, characterized in that: The pressing assembly (4) comprises a pressing plate (41), a connecting seat (42) arranged at the center of the pressing plate (41), a mechanical hook spring (43) arranged in the connecting seat (42), and a connecting clamping column (44) fixed at the center of the insulator circular mechanism (2), wherein a through slot is formed at the lower end of the connecting seat (42), and the connecting clamping column (44) passes through the through slot and is clamped with the mechanical hook spring (43).

9. The rounding device for a motor stator according to claim 8, characterized in that: The connecting clamping column (44) comprises a connecting rod (441) and a clamping portion (442) arranged at the top end of the connecting rod (441); the clamping portion (442) is conical in shape; the maximum diameter of the clamping portion (442) is greater than that of the connecting rod (441); and the clamping portion (442) is clamped to the mechanical hook spring (43).

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