Stator press-in equipment of small motor

Abstract

The utility model relates to stator press-in equipment of a small motor, which comprises a bedplate, a press-fitting assembly arranged at the top of the bedplate, a detection assembly arranged on the right side of the press-fitting assembly, and a material moving assembly arranged in front of the press-fitting assembly and the detection assembly, the detection assembly further comprises three alignment units which are arranged on the second lifting plate and evenly distributed in the circumferential direction at equal angles, a pneumatic sliding table located on the right side of the detection assembly is further fixed to the top of the table plate, and the left side of the press-fitting assembly and the right side of the pneumatic sliding table are each provided with a supporting frame. The tops of the two supporting frames, the moving end of the pneumatic sliding table and the top of the base block are each provided with a positioning module. According to the utility model, the operation steps are effectively simplified to achieve the effect of saving time and labor, so that the production efficiency is improved.

Description

Technical Field

[0001] This utility model relates to a stator pressing device for a small electric motor. Background Technology

[0002] Small motors are characterized by high torque, low noise, small size, light weight, ease of use, and constant speed operation. They can be paired with various gearboxes to change the output speed and torque. In addition, small motors usually have high energy efficiency and reliability, making them suitable for use in various compact spaces. Like regular-sized motors, the stator of a small motor also requires pressing the stator windings into the cylindrical motor housing during assembly. However, after pressing, a necessary test must be performed to check the parallelism deviation between the end face of the stator and the end face of the motor housing. If the parallelism is not up to standard, it will lead to uneven gaps between the stator and rotor, thus affecting the motor's operating efficiency and stability.

[0003] Currently, the pressing and parallelism testing steps between the stator windings and the cylindrical motor housing of small motors are performed separately. That is, the stator must first be pressed into the cylindrical motor housing on a matching pressing equipment, and then the pressed stator is transferred to a matching testing equipment to complete the parallelism test. This results in the motor stator having to be loaded and unloaded twice, making the operation cumbersome, time-consuming and labor-intensive, and thus causing low production efficiency. Moreover, the transfer of the stator between the two types of equipment also needs to be done manually, which also consumes time and manpower. Further improvements are needed. Utility Model Content

[0004] In view of the current state of the prior art, the technical problem to be solved by this utility model is to provide a stator pressing device for small motors that effectively simplifies the operation steps to achieve the effect of saving time and effort, thereby improving production efficiency.

[0005] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: a stator pressing device for a small motor, characterized in that it includes a platform and a pressing assembly disposed on the top of the platform. The pressing assembly includes a bottom plate horizontally fixed to the top of the platform, a top plate horizontally disposed above the bottom plate, a first lifting plate horizontally disposed between the top plate and the bottom plate, two vertical columns vertically inserted and connected in the first lifting plate and respectively disposed in front and behind, a pressing cylinder fixed to the top of the top plate, a lifting seat fixed to the bottom of the first lifting plate, a pressing seat fixed to the end of the lifting seat, a platform fixed to the top of the bottom plate, and a positioning seat fixed to the top of the platform and concentrically disposed below the pressing seat. The telescopic end of the pressing cylinder vertically downward passes through the top plate and is detachably fixed to the first lifting plate. The two ends of each column are respectively fixed to the top plate and the bottom plate.

[0006] It also includes a detection component located to the right of the pressing assembly. The detection component includes an extension frame fixed to the top of the platform, a seat block fixed to the top of the extension frame, a back frame fixed to the top of the extension frame and located behind the seat block, a second lifting plate movably connected to the front side of the back frame to have vertical movement function, a first lifting cylinder fixed to the top of the extension frame, and three dial indicators that are interspersed and fixed in the second lifting plate and are evenly arranged at equal angles along the circumference. The extension end of the first lifting cylinder is vertically upward and fixed to the second lifting plate, and the extension end of each dial indicator is vertically downward.

[0007] It also includes a material transfer assembly located in front of the pressing assembly and the detection assembly. The material transfer assembly includes an electric slide fixed to the top of the platform, a slider movably connected to the top of the platform to have left and right translation function, a second lifting cylinder fixed on the slider, a lifting beam horizontally fixed on the extension end of the second lifting cylinder, and four gripping units located on the rear side of the lifting beam and distributed at equal intervals from left to right. The moving end of the electric slide is fixed on the slider, and the extension end of the second lifting cylinder is set vertically upward.

[0008] Preferably, the second lifting plate has a cavity. Correspondingly, the detection assembly also includes three adjusting blocks fixed to the top of the second lifting plate, each of which can be radially adjusted and fixed in position along the cavity and uniformly surrounded around the cavity at equal angles along the circumferential direction. The end of each adjusting block extends above the cavity. The three dial indicators are respectively inserted and fixed to the ends of the three adjusting blocks. The telescopic end of each dial indicator passes vertically downward through the cavity and extends below the second lifting plate.

[0009] Preferably, the detection assembly further includes three alignment units disposed on the second lifting plate and evenly distributed at equal angles along the circumference. Each alignment unit includes an internally threaded sleeve vertically inserted and fixed in the second lifting plate, a screw vertically inserted and screwed into the internally threaded sleeve, two nuts sleeved and screwed onto the screw and respectively distributed vertically and located below the internally threaded sleeve, and a knob concentrically fixed to the upper end of the screw. The lower ends of the three screws are all located at the same height.

[0010] Preferably, a pneumatic slide is fixed to the top of the platform, located to the right of the detection component. A support frame is also provided to the left of the pressing component and to the right of the pneumatic slide. A positioning module is also provided on the top of the two support frames, on the moving end of the pneumatic slide, and on the top of the seat block. The positioning module includes a base block, multiple vertically fixed limiting posts on the top of the base block, and a positioning pin vertically fixed on the top of the base block. The base block is horizontally fixed to the top of the support frame, the moving end of the pneumatic slide, or the top of the seat block.

[0011] Preferably, the end center of the press-fitting seat also has an inverted positioning cone formed downwards.

[0012] Preferably, the rear edge of the lifting beam has four extension plates arranged at equal intervals from left to right. The four material gripping units are respectively arranged on the four extension plates. Each material gripping unit includes three vacuum suction cups fixed to the bottom of the extension plates and evenly arranged at equal angles along the circumference. The suction end of each vacuum suction cup is vertically downward.

[0013] Preferably, the first lifting cylinder is located at the rear of the back frame, and a traction block is fixed on the telescopic end of the first lifting cylinder. The traction block is movably connected to the rear side of the back frame to have the function of vertical movement. Correspondingly, a traction plate is fixed on the second lifting plate and is vertically arranged in front of the back frame. Two vertically arranged connecting plates are fixed between the traction plate and the traction block and are respectively located on the left and right sides of the back frame.

[0014] Preferably, the rear side of the back frame is also fixed with two first buffers that are symmetrically arranged on the left and right and located below the traction block. The telescopic ends of the two first buffers are both arranged vertically upward and cooperate with the bottom of the traction block.

[0015] Preferably, the front side of the back frame is also fixed with two second buffers that are symmetrically arranged on the left and right and located above the traction plate. The telescopic ends of the two second buffers are both vertically downward and cooperate with the upper edge of the traction plate.

[0016] Compared with the prior art, the advantages of this utility model are as follows: This utility model integrates the parallelism detection step between the stator winding and the cylindrical motor housing into the press-fitting equipment, thereby reducing the steps of one loading and one unloading. At the same time, the automatic displacement and feeding of the motor stator and the cylindrical motor housing are realized by the material transfer component, eliminating the need for manual operation, thus effectively simplifying the operation steps to achieve the effect of saving time and effort, thereby improving production efficiency. Attached Figure Description

[0017] Figure 1 This is a top view of the left front side of the present invention;

[0018] Figure 2 This is a bottom view of the left rear side of the present invention;

[0019] Figure 3 This is a structural diagram of the left front side of the detection component of this utility model;

[0020] Figure 4 This is a structural diagram of the left rear side of the detection component of this utility model;

[0021] Figure 5 This is a magnified exploded view of the structure of this utility model at point A. Detailed Implementation

[0022] Unless otherwise defined, the technical or scientific terms used in this utility model shall have the ordinary meaning understood by one of ordinary skill in the art to which this utility model pertains. The terms "first," "second," and similar terms used in this utility model do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0023] To keep the following description of the embodiments of this utility model clear and concise, detailed descriptions of known functions and known components are omitted.

[0024] like Figures 1-5 As shown, a stator pressing device for a small motor includes a platform 1 and a pressing assembly 2 disposed on the top of the platform 1. The pressing assembly 2 includes a bottom plate 23 horizontally fixed to the top of the platform 1, a top plate 21 horizontally disposed above the bottom plate 23, a first lifting plate 22 horizontally disposed between the top plate 21 and the bottom plate 23, two vertical columns 24 vertically inserted and connected in the first lifting plate 22 and respectively disposed in front and behind, a pressing cylinder 210 fixed to the top of the top plate 21, a lifting seat 25 fixed to the bottom of the first lifting plate 22, a pressing seat 26 fixed to the end of the lifting seat 25, a platform 28 fixed to the top of the bottom plate 23, and a positioning seat 29 fixed to the top of the platform 28 and concentrically disposed below the pressing seat 26. The telescopic end of the pressing cylinder 210 vertically passes through the top plate 21 and is detachably fixed to the first lifting plate 22. The two ends of each column 24 are respectively fixed to the top plate 21 and the bottom plate 23.

[0025] It also includes a detection component 4 located to the right of the pressing component 2. The detection component 4 includes an extension frame 41 fixed to the top of the platform 1, a seat block 46 fixed to the top of the extension frame 41, a back frame 42 fixed to the top of the extension frame 41 and located behind the seat block 46, a second lifting plate 43 movably connected to the front side of the back frame 42 to have the function of vertical movement, a first lifting cylinder 44 fixed to the top of the extension frame 41, and three dial indicators 45 that are inserted and fixed in the second lifting plate 43 and are evenly arranged at equal angles along the circumference. The extension end of the first lifting cylinder 44 is vertically upward and fixed on the second lifting plate 43, and the extension end of each dial indicator 45 is vertically downward.

[0026] It also includes a material transfer assembly 5 located in front of the pressing assembly 2 and the detection assembly 4. The material transfer assembly 5 includes an electric slide 51 fixed to the top of the platform 1, a slider 52 movably connected to the top of the platform 1 to have left and right translation function, a second lifting cylinder 53 fixed on the slider 52, a lifting beam 54 horizontally fixed on the extension end of the second lifting cylinder 53, and four gripping units 55 located on the rear side of the lifting beam 54 and distributed at equal intervals from left to right. The moving end of the electric slide 51 is fixed on the slider 52, and the extension end of the second lifting cylinder 53 is set vertically upward.

[0027] The second lifting plate 43 has a cavity 431. Correspondingly, the detection assembly 4 also includes three adjusting blocks 47 fixed to the top of the second lifting plate 43 and each of them can be radially adjusted and fixed in position along the cavity 431 and are evenly surrounded around the cavity 431 at equal angles in the circumferential direction. The end of each adjusting block 47 extends above the cavity 431. Three dial indicators 45 are respectively inserted and fixed to the ends of the three adjusting blocks 47. The telescopic end of each dial indicator 45 passes vertically downward through the cavity 431 and extends below the second lifting plate 43.

[0028] The detection assembly 4 also includes three alignment units that are disposed on the second lifting plate 43 and are evenly distributed at equal angles along the circumference. Each alignment unit includes an internal threaded sleeve 48 that is vertically inserted and fixed in the second lifting plate 43, a screw 49 that is vertically inserted and screwed into the internal threaded sleeve 48, two nuts 410 that are sleeved and screwed onto the screw 49 and are respectively distributed vertically and located below the internal threaded sleeve 48, and a knob 411 that is concentrically fixed to the upper end of the screw 49. The lower ends of the three screws 49 are all at the same height.

[0029] The top of the platform 1 is also fixed with a pneumatic slide 8 located to the right of the detection component 4. A support frame 6 is also provided on the left side of the pressing component 2 and the right side of the pneumatic slide 8. A positioning module 7 is also provided on the top of the two support frames 6, the moving end of the pneumatic slide 8, and the top of the seat block 46. The positioning module 7 includes a base block 71, multiple limit posts 72 vertically fixed to the top of the base block 71, and a positioning pin 73 vertically fixed to the top of the base block 71. The base block 71 is horizontally fixed to the top of the support frame 6, the moving end of the pneumatic slide 8, or the top of the seat block 46.

[0030] An inverted positioning cone 261 is also formed downward at the center of the end of the press-fit seat 26.

[0031] The rear edge of the lifting beam 54 has four extension plates 541 arranged at equal intervals from left to right. Four material gripping units 55 are respectively arranged on the four extension plates 541. Each material gripping unit 55 includes three vacuum suction cups 551 fixed to the bottom of the extension plate 541 and evenly arranged at equal angles along the circumference. The suction end of each vacuum suction cup 551 is vertically downward.

[0032] The first lifting cylinder 44 is located at the rear of the back frame 42. A traction block 413 is also fixed on the telescopic end of the first lifting cylinder 44. The traction block 413 is movably connected to the rear side of the back frame 42 to have the function of vertical movement. Correspondingly, a traction plate 412 is also fixed on the second lifting plate 43, which is vertically located in front of the back frame 42. Two vertically arranged connecting plates 414 are also fixed between the traction plate 412 and the traction block 413 and are located on the left and right sides of the back frame 42 respectively.

[0033] Two first buffers 415 are fixed to the rear side of the back frame 42, which are symmetrically arranged on the left and right and located below the traction block 413. The telescopic ends of the two first buffers 415 are both vertically upward and cooperate with the bottom of the traction block 413.

[0034] Two second buffers 416 are also fixed to the front side of the back frame 42, which are symmetrically arranged on the left and right and located above the traction plate 412. The telescopic ends of the two second buffers 416 are both vertically downward and cooperate with the upper edge of the traction plate 412.

[0035] Working principle:

[0036] Using manual labor or a robotic arm, the motor stator and cylindrical motor housing are placed on the positioning module 7 on a support frame 6 on the left side and on top of the positioning seat 29, respectively, with the lower opening of the motor stator positioned inside each limiting post 72 in the positioning module 7 to prevent the motor stator from shifting. Then, the moving end of the electric slide 51 in the material transfer assembly 5 is driven to move to the left, so that the four gripping units 55 are moved to the left by the slider 52, the second lifting cylinder 53, and the lifting beam 54, until the leftmost gripping unit 55 is above the motor stator. Then, the extension and retraction of the second lifting cylinder 53 is driven. The end retracts inward to move all four gripping units 55 downward with the help of the lifting beam 54. Simultaneously, each vacuum suction cup 551 in each gripping unit 55 is activated to grip the motor stator. Then, the telescopic end of the second lifting cylinder 53 extends outward to move the motor stator upward in the same manner. Next, the moving end of the electric slide 51 moves to the right to move the motor stator to the right in the same manner, until the motor stator is above the cylindrical motor housing. Finally, the telescopic end of the second lifting cylinder 53 retracts inward to move the motor stator downward until the motor stator... The lower end enters the upper opening of the cylindrical motor housing, and then each vacuum suction cup 551 in each gripping unit 55 is closed to release the motor stator. Then, the telescopic end of the second lifting cylinder 53 is driven to extend outward to move each gripping unit 55 upward in the same way. At the same time, the moving end of the electric slide table 51 is driven to move half a distance to the left so that the two extension plates 541 on the left and right sides of the cylindrical motor housing are respectively located. At this time, the upper part of the cylindrical motor housing is suspended and only the pressing seat 26 is present. Then, the telescopic end of the pressing cylinder 210 in the pressing assembly 2 can be driven outward. The extension of the first lifting plate 22 causes it to move vertically downward along the axis of the two columns 24, and then the lifting seat 25 drives the pressing seat 26 to move downward. When the end face of the pressing seat 26 is in contact with the top of the motor stator, the positioning cone 261 is embedded in the top opening of the motor stator. Continuing to drive the pressing seat 26 downward will force the motor stator to be pressed into the interior of the cylindrical motor housing to complete the pressing of the motor stator. The telescopic end of the pressing cylinder 210 passes vertically downward through the top plate 21 and is detachably fixed on the first lifting plate 22. The two ends of each column 24 are fixed on the top plate 21 and the bottom plate 23 respectively.

[0037] After pressing is completed, the telescopic end of the pressing cylinder 210 is first driven to retract inward to move the pressing seat 26 upward away from the motor stator and reset. Then, the moving end of the electric slide 51 is driven to continue moving to the left until the leftmost gripping unit 55 is above the motor stator to prepare to grip the next motor stator. At this time, the second gripping unit 55 from the left is above the cylindrical motor housing with the pressed motor stator. Then, the second lifting cylinder 53 is operated in the same way to make each gripping unit 55 move downward. Then, each vacuum suction cup 551 in each gripping unit 55 is activated to simultaneously adsorb the next unpressed motor stator and the motor stator already pressed in the cylindrical motor housing. Then, the second lifting cylinder 53 and the electric slide 51 are operated in the same way to move the two motor stators upward and then to the right. Because the bonding force between the motor stator pressed in the cylindrical motor housing and the cylindrical motor housing is large, it will simultaneously drive the cylindrical motor housing to move. During this period, the next cylindrical motor housing... The body is also placed on top of the positioning seat 29. When the next unpressed motor stator is above the next cylindrical motor housing, the previous pressed motor stator and cylindrical motor housing are moved to a positioning module 7 located on top of the seat block 46 and below the second lifting plate 43. Then, the second lifting cylinder 53 and each gripping unit 55 are operated in the same way to drive both motor stators to move downwards, thereby placing the previous pressed motor stator and cylindrical motor housing together on a positioning module 7 located on top of the seat block 46, while the next motor stator is placed inside the upper opening of the next cylindrical motor housing. Then, the moving end of the electric slide table 51 is driven to move half a distance to the left so that the two middle extension plates 541 are located on the left and right sides of the seat block 46 respectively, while the two left extension plates 541 are located on the left and right sides of the next cylindrical motor housing respectively. At this time, the area above the previous pressed motor stator and cylindrical motor housing is suspended, and the area above the next cylindrical motor housing is also suspended.

[0038] Subsequently, the telescopic end of the first lifting cylinder 44 in the drive detection assembly 4 retracts inward to drive the traction block 413 to move downward. Then, with the help of the two connecting plates 414, the traction plate 412 moves downward. This, in turn, with the help of the second lifting plate 43, drives the three dial indicators 45 and the three alignment units to move downward until the lower end of the screw 49 in each alignment unit is pressed against the upper end face of the cylindrical motor housing. At this time, the telescopic end of each dial indicator 45 is pressed against the top of the motor stator. Then, the dial of each dial indicator 45 will display data. If the data of each dial indicator 45 is very close, it indicates that the top of the motor stator is parallel to the upper end face of the cylindrical motor housing, and the parallelism can be judged to meet the standard. If the difference between the data of any two dial indicators 45 exceeds the specified range, it can be judged that the parallelism between the top of the motor stator and the upper end face of the cylindrical motor housing does not meet the standard.

[0039] After the test is completed, the telescopic end of the first lifting cylinder 44 is first extended outward to move the three dial indicators 45 and the three alignment units upward and reset. Then, the moving end of the electric slide table 51 is driven to continue moving to the left until the leftmost gripping unit 55 is above the motor stator to prepare to grip the next motor stator. At this time, the second gripping unit 55 from the left is above the cylindrical motor housing that presses the motor stator, and the second gripping unit 55 from the right is above the motor stator that has been tested and the cylindrical motor housing. Then, the second lifting cylinder 53 is operated in the same way to make each gripping unit... The material handling units 55 are all moved down, and then each vacuum suction cup 551 in each material handling unit 55 is activated to simultaneously pick up the three motor stators. Then, the second lifting cylinder 53 and the electric slide 51 are operated in the same way to drive the three motor stators to move up first and then to the right. The motor stators and cylindrical motor housings that have completed the test are moved together to a positioning module 7 located on the moving end of the pneumatic slide 8. The next motor stator and cylindrical motor housing are pressed and moved to a positioning module 7 located on the top of the seat block 46. The next motor stator is placed inside the upper opening of the next cylindrical motor housing.

[0040] If the test results are satisfactory, the moving end of the pneumatic slide table 8 remains stationary. Then, the electric slide table 51 is operated in the same way to move each gripping unit 55 to the left until the rightmost gripping unit 55 is above the motor stator located on the moving end of the pneumatic slide table 8. Then, the second lifting cylinder 53 and each vacuum suction cup 551 are operated in the same way to simultaneously grip the four motor stators. Then, the second lifting cylinder 53 and the electric slide table 51 are operated in the same way to move the four motor stators first upward and then to the right until the motor stator and cylindrical motor housing that have completed the test are moved to the positioning module 7 on a support frame 6 located on the right. Then, following the same method, the second lifting cylinder 53 and each vacuum suction cup 551 are operated to place the completed motor stator and cylindrical motor housing on a positioning module 7 on a support frame 6 located on the right. The next completed motor stator and cylindrical motor housing are placed on a positioning module 7 located on the moving end of the pneumatic slide table 8. If the test result is unqualified, the moving end of the pneumatic slide table 8 must be driven to move backward before grabbing four motor stators so that the corresponding vacuum suction cup 551 does not grab the unqualified motor stator, but is removed manually or by a robotic arm, thus forming a cycle.

[0041] This invention integrates the parallelism detection step between the stator winding and the cylindrical motor housing into the press-fitting equipment, thereby reducing the steps of loading and unloading. At the same time, the automatic shifting and feeding of the motor stator and the cylindrical motor housing is achieved by the material transfer component 5, eliminating the need for manual operation. This effectively simplifies the operation steps to achieve the effect of saving time and effort, thereby improving production efficiency.

[0042] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it; although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A stator pressing device for a small electric motor, characterized in that, The device includes a platform and a pressing assembly located on top of the platform. The pressing assembly includes a bottom plate horizontally fixed to the top of the platform, a top plate horizontally located above the bottom plate, a first lifting plate horizontally located between the top plate and the bottom plate, two vertically inserted columns connected in the first lifting plate and respectively arranged front and rear, a pressing cylinder fixed to the top of the top plate, a lifting seat fixed to the bottom of the first lifting plate, a pressing seat fixed to the end of the lifting seat, a platform fixed to the top of the bottom plate, and a positioning seat fixed to the top of the platform and concentrically located below the pressing seat. The telescopic end of the pressing cylinder passes vertically downward through the top plate and is detachably fixed to the first lifting plate. The two ends of each column are respectively fixed to the top plate and the bottom plate. It also includes a detection component located to the right of the pressing assembly. The detection component includes an extension frame fixed to the top of the platform, a seat block fixed to the top of the extension frame, a back frame fixed to the top of the extension frame and located behind the seat block, a second lifting plate movably connected to the front side of the back frame to have vertical movement function, a first lifting cylinder fixed to the top of the extension frame, and three dial indicators that are interspersed and fixed in the second lifting plate and are evenly arranged at equal angles along the circumference. The extension end of the first lifting cylinder is vertically upward and fixed to the second lifting plate, and the extension end of each dial indicator is vertically downward. It also includes a material transfer assembly located in front of the pressing assembly and the detection assembly. The material transfer assembly includes an electric slide fixed to the top of the platform, a slider movably connected to the top of the platform to have left and right translation function, a second lifting cylinder fixed on the slider, a lifting beam horizontally fixed on the extension end of the second lifting cylinder, and four gripping units located on the rear side of the lifting beam and distributed at equal intervals from left to right. The moving end of the electric slide is fixed on the slider, and the extension end of the second lifting cylinder is set vertically upward.

2. The stator pressing device for a small electric motor according to claim 1, characterized in that, The second lifting plate has a cavity. Correspondingly, the detection assembly also includes three adjusting blocks fixed to the top of the second lifting plate, each of which can be adjusted to a fixed position radially along the cavity and uniformly surrounds the cavity at equal angles along the circumference. The end of each adjusting block extends above the cavity. The three dial indicators are respectively inserted and fixed to the ends of the three adjusting blocks. The telescopic end of each dial indicator passes vertically downward through the cavity and extends below the second lifting plate.

3. The stator pressing device for a small electric motor according to claim 1, characterized in that, The detection assembly also includes three alignment units disposed on the second lifting plate and evenly distributed at equal angles along the circumference. Each alignment unit includes an internally threaded sleeve vertically inserted and fixed in the second lifting plate, a screw vertically inserted and screwed into the internally threaded sleeve, two nuts sleeved and screwed onto the screw and distributed vertically and below the internally threaded sleeve, and a knob concentrically fixed to the upper end of the screw. The lower ends of the three screws are all at the same height.

4. The stator pressing device for a small electric motor according to claim 1, characterized in that, The top of the platform is also fixed with a pneumatic slide located to the right of the detection component. A support frame is also provided on the left side of the pressing component and the right side of the pneumatic slide. A positioning module is also provided on the top of the two support frames, on the moving end of the pneumatic slide, and on the top of the seat block. The positioning module includes a base block, multiple vertically fixed limit posts on the top of the base block, and a positioning pin vertically fixed on the top of the base block. The base block is horizontally fixed on the top of the support frame, the moving end of the pneumatic slide, or the top of the seat block.

5. The stator pressing device for a small electric motor according to claim 1, characterized in that, The center of the end of the press-fitting seat also has an inverted positioning cone formed downwards.

6. The stator pressing device for a small electric motor according to claim 1, characterized in that, The rear edge of the lifting beam has four extension plates arranged at equal intervals from left to right. The four material gripping units are respectively arranged on the four extension plates. Each material gripping unit includes three vacuum suction cups fixed to the bottom of the extension plates and evenly arranged at equal angles along the circumference. The suction end of each vacuum suction cup is vertically downward.

7. The stator pressing device for a small electric motor according to claim 1, characterized in that, The first lifting cylinder is located at the rear of the back frame. A traction block is also fixed on the telescopic end of the first lifting cylinder. The traction block is movably connected to the rear side of the back frame to have the function of vertical movement. Correspondingly, a traction plate is also fixed on the second lifting plate, which is vertically located in front of the back frame. Two vertically arranged connecting plates are also fixed between the traction plate and the traction block and located on the left and right sides of the back frame, respectively.

8. The stator pressing device for a small electric motor according to claim 7, characterized in that, The back frame is also fixed with two first buffers that are symmetrically arranged on the left and right and located below the traction block. The telescopic ends of the two first buffers are both vertically upward and cooperate with the bottom of the traction block.

9. The stator pressing device for a small electric motor according to claim 7, characterized in that, The front side of the back frame is also fixed with two second buffers that are symmetrically arranged on the left and right and located above the traction plate. The telescopic ends of the two second buffers are both set vertically downward and cooperate with the upper edge of the traction plate.

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