Motor stator hot assembly device and assembly process

Abstract

The invention discloses a motor stator hot assembly device and assembly process, and belongs to the technical field of motor stator assembly. The machine comprises a rack, wherein the rack is provided with a transfer assembly, a heat exchange assembly and a stator supply assembly; the transferring assembly comprises a rotary disc and three limiting sleeves arranged on the rotary disc in an annular array mode. The limiting sleeve is circularly switched among different stations under the driving of the rotary disc; the heat exchange assembly comprises a bearing plate arranged on the rack in a lifting mode, and a cooling sleeve and a heating sleeve are arranged on the bearing plate. The cooling sleeve and the heating sleeve are sleeved on the corresponding limiting sleeves after descending to form a sealed space; and the stator supply assembly is used for assembling the stator into the heated shell. According to the invention, heating, cooling and stator assembling operations can be carried out synchronously, so that the assembling efficiency is improved; and meanwhile, the shell is heated in a sealed space, so that heat loss can be reduced, and energy consumption is reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of motor stator assembly, and more specifically, relates to a motor stator thermal assembly device and an assembly process. Background Art

[0002] The stator is the stationary part of the motor or generator. The stator consists of a stator core and a stator winding. Its main function is to be cut by magnetic lines of force in a rotating magnetic field to generate (output) current. In the conventional installation process, the stator and the shell are generally connected by a shrink fit process, that is, the shell is first heated and heated to expand due to the heat, and the inner diameter of the shell cavity is increased, so that the inner diameter of the shell cavity is slightly larger than the outer diameter of the stator; then the stator is inserted into the shell cavity, and the assembly between the stator and the shell is completed after cooling. However, the existing stator shrink fit tooling has high energy consumption when heating the shell; at the same time, the cooling efficiency after positioning and assembly is completed is low, which affects the overall assembly efficiency. Therefore, it is of great significance to design a shrink fit tooling with low energy consumption and effective improvement of assembly efficiency.

[0003] After searching, the patent CN217335371U discloses a motor stator shrink fit tooling structure. This application heats the motor housing through a heating ring, and at the same time uses a pressing head to press the stator assembly into the motor housing, which improves production efficiency and reduces the difficulty of process control.

[0004] Patent CN212695874U discloses a motor stator heat-installation device. In this application, the housing is transported to a heating device for heating by a horizontal sliding assembly. After the heating is completed, the horizontal sliding assembly transports the housing to the bottom of the stator positioning fixture. Then, the stator positioning fixture works to press the motor stator into the motor housing, replacing manual press-installation of the motor stator, which effectively saves manpower.

[0005] The above applications all involve technical improvements to the motor stator shrink fit tooling. Meanwhile, in the patent CN212695874U, the cold air generated by the air cooler is used to cool the casing, which can shorten the cooling time of the casing and help improve the overall assembly efficiency. However, the problem of high energy consumption for casing heating has not been effectively solved. Summary of the invention

[0006] 1. Problems to be solved

[0007] In view of at least some of the problems existing in the above prior art, the present invention proposes a motor stator thermal assembly device and assembly process, which aims to solve the problems of high heating energy consumption and low assembly efficiency in the existing stator shrink fitting tooling.

[0008] 2. Technical solution

[0009] In order to solve the above problems, the technical solution adopted by the present invention is as follows:

[0010] A motor stator thermal assembly device of the present invention comprises a frame, wherein the frame is provided with:

[0011] A transfer assembly, wherein the transfer assembly comprises a turntable rotatably arranged on a frame and three limiting sleeves arranged on the turntable in a circular array; the limiting sleeves are cyclically switched between different workstations under the drive of the turntable;

[0012] A heat exchange assembly, wherein the heat exchange assembly comprises a bearing plate which is lifted and lowered on the frame, and a cooling jacket and a heating jacket are arranged on the bearing plate; wherein the cooling jacket is connected to an air supply pipe, a heating element is arranged in the heating jacket, and the cooling jacket and the heating jacket are lowered and sleeved on corresponding limiting jackets to form a sealed space;

[0013] And a stator supply assembly, the stator supply assembly includes a bearing sleeve located above the transfer assembly, and the bearing sleeve is used to assemble the stator into the heated shell.

[0014] Furthermore, a hot air pipe is connected between the cooling jacket and the heating jacket, and the cooling air after heat exchange enters the heating jacket through the hot air pipe to preheat the shell to be heated.

[0015] Furthermore, a vibrator is provided on the outer peripheral wall of the bearing sleeve; a delivery pipe is provided in the bearing sleeve, and a plurality of grinding parts for grinding the stator are provided on the inner wall of the delivery pipe.

[0016] Furthermore, a magnet is provided between the delivery pipe and the bearing sleeve; an annular brush is provided at the bottom of the delivery pipe; and the annular brush is arranged on the inner wall of the bearing sleeve.

[0017] Furthermore, the delivery tube is an air bag, and an air inlet pipe and an air outlet pipe are provided on the delivery tube for adjusting the pressure of the gas in the delivery tube.

[0018] Furthermore, the air inlet pipe is connected to the heating sleeve through a heat exchanger; and the air outlet pipe is connected to the air supply pipe through an air pump.

[0019] Furthermore, the inner wall of the conveying pipe is corrugated; and guide rollers distributed in a ring shape are provided at the outlet of the conveying pipe.

[0020] Furthermore, a buffer pad is provided at the contact point between the bearing sleeve and the frame; and a sealing ring is provided on the outer side of the limiting sleeve to fit with the ends of the cooling sleeve and the heating sleeve.

[0021] Furthermore, one end of the hot air pipe is located at the top of the inner cavity of the cooling jacket, and the other end extends to the bottom of the inner cavity of the heating jacket.

[0022] The present invention also provides a motor stator thermal assembly process, which comprises the following steps:

[0023] S1. First, the shells are placed into the corresponding limiting sleeves on the rotary disk; at this time, the three limiting sleeves are respectively located at the heating station, the feeding station and the cooling station;

[0024] S2, the carrying plate descends, driving the cooling jacket and the heating jacket to be respectively sleeved on the limiting sleeves of the cooling station and the heating station;

[0025] S3, heating the shell in the heating jacket. When the shell is heated to the set temperature, the bearing plate drives the cooling jacket and the heating jacket to rise. Then, the rotary disk rotates, so that each limiting jacket and the shell inside it rotate to the next station. At this time, the heated shell rotates from the heating station to the feeding station. The shell originally located at the cooling station rotates to the heating station.

[0026] S4, the carrying plate descends again, and the cooling jacket and the heating jacket are placed on the limiting jackets of the corresponding stations; at the same time, the stator is added into the shell that is heated and expanded at the feeding station through the conveying pipe to complete the assembly operation of the stator and form an assembly; during the assembly process, the heating jacket continues to heat the newly transferred shell inside it;

[0027] S5, lift the bearing plate and rotate the turntable, the turntable rotates the heated shell to the bottom of the bearing sleeve again; at this time, a new shell is rotated under the heating sleeve, and the assembly is located under the cooling sleeve;

[0028] S6, the carrier plate descends, and the air pump is started. The cooling air enters the cooling jacket through the air supply pipe to take away the heat of the assembly; it is transported to the heating jacket through the hot air pipe to preheat the shell inside it; it is discharged to the intake pipe through the heating jacket, and the temperature of the gas is adjusted after heat exchange in the heat exchanger on the intake pipe. The gas finally enters the delivery pipe, which keeps the internal stator warm. Finally, the gas completes the cycle under the action of the air pump;

[0029] S7. After the assembly is cooled, remove the assembly and replace it with a new shell, completing a complete assembly operation, and repeating the cycle.

[0030] 3. Beneficial effects

[0031] Compared with the prior art, the present invention has the following beneficial effects:

[0032] (1) A motor stator thermal assembly device of the present invention has three limiting sleeves on a rotating disk. Driven by the rotating disk, the limiting sleeves can be cyclically switched between a heating station, a cooling station and a feeding station, so that heating, cooling and stator assembly operations can be carried out simultaneously, thereby effectively improving the overall efficiency of the assembly process; at the same time, a sealed heating space can be formed by the cooperation of the heating sleeve and the limiting sleeve, which can effectively reduce heat loss and reduce energy consumption; cooling air is introduced into the cooling sleeve through the air supply duct, which can shorten the cooling time of the shell, which is also beneficial to improving the assembly efficiency.

[0033] (2) A motor stator thermal assembly device of the present invention has a hot air duct connected between the cooling jacket and the heating jacket. The cooling air entering the cooling jacket exchanges heat with the hot assembly body and then enters the heating jacket to preheat the shell to be heated. While achieving heat recovery and utilization, it also reduces the energy consumption of shell heating.

[0034] (3) A motor stator thermal assembly device of the present invention can clean burrs and debris on the stator by providing a vibrator and a grinding part on the bearing sleeve; at the same time, a magnet and an annular brush are used to further clean and collect the debris polished off, so that the outside of the stator is smoother and cleaner, which is beneficial to ensuring the assembly accuracy and assembly efficiency of the stator.

[0035] (4) In a motor stator thermal assembly device of the present invention, the delivery pipe is designed as an air bag. By adjusting the gas pressure in the air bag to change the inner diameter of the air bag, the feeding operation of stators of different specifications can be adapted. At the same time, constant temperature gas is introduced into the air bag, so that the stator can be in the same constant temperature environment before entering the housing, which can effectively avoid the influence of the stator assembly efficiency and accuracy due to the change of the external environment temperature.

[0036] (5) In a motor stator thermal assembly device of the present invention, a buffer pad is provided at the contact point between the bearing sleeve and the shell. The buffer pad can effectively avoid the influence of the vibrator on the frame during operation; on the other hand, it can make the vibration effect of the conveying pipe better, which is beneficial to improve the cleaning effect of the grinding part; at the same time, the setting of the guide roller makes the stator fall into the shell more smoothly, so as to ensure the stator assembly efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 It is a structural schematic diagram of a motor stator thermal assembly device of the present invention;

[0038] Figure 2 It is a schematic diagram of the structure of the transport component in the present invention;

[0039] Figure 3 It is a schematic diagram of the structure of the heat exchange component in the present invention;

[0040] Figure 4It is a structural schematic diagram of the stator supply assembly in the present invention;

[0041] Figure 5 It is a schematic diagram of the structure of the delivery pipe in the present invention;

[0042] Figure 6 It is a schematic diagram of the assembly between the heat exchange component and the stator supply component in the present invention.

[0043] In the figure: 1, frame; 2, transfer assembly; 21, turntable; 22, limiting sleeve; 221, sealing ring; 23, motor;

[0044] 3. heat exchange assembly; 31. carrier plate; 32. cooling jacket; 33. heating jacket; 331. heating element; 34. air supply pipe; 35. hot air pipe; 36. heat exchanger; 37. air pump; 38. cylinder;

[0045] 4. stator supply assembly; 41. bearing sleeve; 42. delivery pipe; 421. grinding part; 422. air inlet pipe; 423. air outlet pipe; 424. bypass pipe; 425. solenoid valve; 43. magnet; 44. vibrator; 45. annular brush; 46. guide roller; 47. buffer pad;

[0046] 5. Housing; 6. Stator; 7. Controller. DETAILED DESCRIPTION

[0047] In order to further understand the content of the present invention, the present invention is described in detail in conjunction with the accompanying drawings.

[0048] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0049] The present invention is further described below in conjunction with specific embodiments.

[0050] like Figure 1As shown, a motor stator thermal assembly device of this embodiment includes a frame 1 and a transfer component 2, a heat exchange component 3, and a stator supply component 4 arranged on the frame 1. Among them, the transfer component 2 is used to carry the shell 5 and drive the shell 5 to cyclically switch between different workstations, so that the operations of different workstations can be carried out synchronously to improve the assembly effect. The heat exchange component 3 is located above the transfer component 2, and is used to heat the shell 5 to be heated on the transfer component 2 and to cool down the assembled hot assembly. The stator supply component 4 is also located above the transfer component 2, and is mainly used to deliver the stator 6 into the shell 5 after heating and expansion to complete the assembly operation of the stator.

[0051] Specifically, refer to Figure 2 As shown, the transfer assembly 2 includes a turntable 21 and a limiting sleeve 22. The turntable 21 is rotatably arranged on the frame 1 by a motor 23, and three limiting sleeves 22 are arranged in a circular array on the turntable 21. When the shell 5 is placed in the corresponding limiting sleeve 22, driven by the turntable 21, the shell 5 can be cyclically switched between the heating station, the cooling station and the feeding station to perform heating, cooling and feeding operations at the same time, thereby effectively improving the overall efficiency of the assembly process.

[0052] like Figure 3 As shown, the heat exchange assembly 3 includes a carrier plate 31 and a cooling jacket 32 ​​and a heating jacket 33 arranged at the bottom of the carrier plate 31. The carrier plate 31 can be raised and lowered on the frame 1 by a cylinder 38. Below the cooling jacket 32 ​​corresponds to a cooling station, and the cooling jacket 32 ​​is connected to an air supply pipe 34. Below the heating jacket 33 corresponds to a heating station, and a heating element 331, such as a heating coil, is arranged in the heating jacket 33.

[0053] When the cylinder 38 drives the carrier plate 31 and drives the cooling jacket 32 ​​and the heating jacket 33 to descend; at this time, the limiting jacket 22 and the cooling jacket 32 ​​at the cooling station are mutually connected to form a closed cooling space, and the heating jacket 33 and the limiting jacket 22 at the heating station are mutually connected to form a closed heating space. The cooling air is introduced into the cooling jacket 32 ​​through the air supply pipe 34, which can shorten the cooling time of the shell 5 to be cooled. At the same time, the shell 5 to be heated is heated in the sealed heating space, which can effectively reduce heat loss and reduce energy consumption.

[0054] Preferably, a hot air pipe 35 is connected between the cooling jacket 32 ​​and the heating jacket 33. One end of the hot air pipe 35 is located at the top of the inner cavity of the cooling jacket 32, and the other end extends to the bottom of the inner cavity of the heating jacket 33. Through the arrangement of the hot air pipe 35, the cooling air entering the cooling jacket 32 ​​enters the heating jacket 33 after heat exchange, and preheats the shell 5 to be heated, which not only realizes heat recovery, but also reduces the energy consumption of shell heating.

[0055] At the same time, in order to ensure the sealing performance of the cooling sleeve 32, the heating sleeve 33 and the limiting sleeve 22 after being sleeved, a sealing ring 221 is sleeved on the outer side of the limiting sleeve 22. When the cooling sleeve 32 and the heating sleeve 33 are sleeved on the limiting sleeve 22 at the corresponding position, the bottom of the cooling sleeve 32 and the heating sleeve 33 can fit with the sealing ring 221 to ensure the sealing performance of the contact point.

[0056] like Figure 4 , Figure 5 As shown, the stator supply assembly 4 includes a bearing sleeve 41 and a delivery pipe 42 disposed in the bearing sleeve 41. The lower portion of the delivery pipe 42 is a feeding station. The stator 6 can enter the housing 5 located at the feeding station and expanded after heating through the delivery pipe 42 to complete the assembly operation of the stator 6.

[0057] Preferably, in this embodiment, a plurality of grinding portions 421 are provided on the inner wall of the delivery pipe 42 for grinding and cleaning burrs and debris on the outer wall of the stator 6 to make the outer wall of the stator 6 smoother, thereby facilitating the assembly accuracy.

[0058] A magnet 43 is provided between the delivery pipe 42 and the bearing sleeve 41 for adsorbing and cleaning the magnetic debris after grinding. An annular brush 45 is provided at the bottom of the delivery pipe 42 for cleaning the non-magnetic debris on the stator 6; the annular brush 45 can be directly arranged on the inner wall of the bearing sleeve 41. At the same time, a guide roller 46 distributed in an annular shape is provided at the outlet of the delivery pipe 42 for guiding the stator 6 to fall so that the stator 6 can fall into the housing 5 smoothly and accurately.

[0059] In addition, a vibrator 44 is provided on the outer peripheral wall of the bearing sleeve 41. Under the vibration of the vibrator 44, the stator 6 is rubbed by the grinding part 421 in the conveying pipe 42 to grind and remove burrs on the outer side of the stator 6, and the iron filings are sucked by the magnet 43, and after being cleaned by the annular brush 45, the stator 6 finally falls into the housing 5 under the guidance of the guide roller 46.

[0060] In order to prevent the vibrator 44 from affecting the frame 1 when it is working, a buffer pad 47 is provided at the contact point between the bearing sleeve 41 and the frame 1. The buffer pad 47 can effectively prevent the vibrator 44 from affecting the frame 1 when it is working; on the other hand, it can make the vibration effect of the conveying pipe 42 better, which is conducive to improving the cleaning effect of the grinding part 421.

[0061] In this embodiment, as a preferred embodiment of the delivery tube 42, the delivery tube 42 is an air bag, and the air bag is provided with an air inlet pipe 422 and an air outlet pipe 423, which are used to adjust the gas pressure in the air bag to change the inner diameter of the air bag, so as to adapt to the feeding operation of stators of different specifications. At the same time, constant temperature gas can be introduced into the air bag so that the stator 6 can be in the same constant temperature environment before entering the housing 5, which can effectively avoid the assembly efficiency and accuracy of the stator 6 being affected by the change of the external ambient temperature. Among them, the air bag can be made of a hollow annular cavity made of thin-walled non-magnetic materials such as rubber and silicone, and the inner wall of the air bag is corrugated. When manufacturing the air bag, silica sand particles can be planted on the surface to form the above-mentioned polishing part 421. The specific planting process of silica sand particles is prior art and will not be described in detail here.

[0062] Specifically in this embodiment, Figure 4 , Figure 6 As shown, the air intake pipe 422 is connected to the heating sleeve 33 through the heat exchanger 36. After the heat recovery of the heating sleeve 33, the gas is further cooled by heat exchanger 36, flows through the delivery pipe 42 and insulates the stator 6 in the delivery pipe 42, so that the temperature of the stator 6 is kept constant and low, thereby coping with the influence of different external ambient temperatures on the assembly accuracy and efficiency. Among them, the air intake pipe 422 can be made of a thin-walled heat dissipation hose, preferably a spiral tube, so that the gas can initially dissipate heat and improve the heat dissipation effect when flowing through the air intake pipe 422. The specific structure and working principle of the heat exchanger 36 are all prior art.

[0063] The air outlet pipe 423 is connected to the air supply pipe 34 through the air pump 37. The air outlet pipe 423 is provided with a bypass pipe 424, and both the air outlet pipe 423 and the bypass pipe 424 are provided with an electromagnetic valve 425. The pressure of the circulating gas when the air pump 37 is running can be adjusted by the opening of the electromagnetic valve 425, so that the inner diameter of the airbag can expand or contract with the size of the ventilation pressure, thereby adapting to the assembly of stators 6 of different sizes.

[0064] In this embodiment, a controller 7 is provided on the frame 1, and the electrical components such as the motor 23, the heating element 331, the air pump 37, the cylinder 38, the solenoid valve 425, and the vibrator 44 can be controlled by the controller 7. It should be noted that the structure and control principle of the controller 7 are both prior art and are not the focus of protection of this application.

[0065] The specific working process and principle of a motor stator thermal assembly device of this embodiment are as follows:

[0066] When the device is started for the first time, the three shells 5 are first placed in the limiting sleeves 22 on the turntable 21 respectively. At this time, the three limiting sleeves 22 are respectively located at the heating station, the cooling station and the feeding station; for the convenience of description, the shells 5 located at the heating station, the cooling station and the feeding station at this time are defined as the first shell, the second shell and the third shell respectively.

[0067] The cylinder 38 is started by the controller 7, and the cylinder 38 drives the carrier plate 31 to descend, so that the cooling jacket 32 ​​and the heating jacket 33 are respectively sleeved on the limiting jackets 22 of the cooling station and the heating station, and are in sealing contact with the sealing ring 221;

[0068] Subsequently, the heating element 331 is started to heat the first shell in the heating sleeve 33; when the first shell is heated to the set temperature, the cylinder 38 drives the carrier plate 31 to rise; the motor 23 is started to drive the rotary disk 21 to rotate, so that the heated first shell rotates to the bottom of the carrier sleeve 41, that is, the feeding station;

[0069] Next, the cylinder 38 drives the carrying plate 31 to descend, and the second shell and the third shell of the rotating disk 21 are sealed by the heating jacket 33 and the cooling jacket 32 ​​respectively.

[0070] The air pump 37 is started to supply air to the air supply pipe 34. The air in the air supply pipe 34 passes through the cooling jacket 32, the heating jacket 33 and the heat exchanger 36 in sequence, enters the delivery pipe 42 and finally enters the air supply pipe 34 to complete the cycle. During the circulation process, the stator 6 is placed into the delivery pipe 42 from top to bottom, and the vibrator 44 is started. Under the vibration of the vibrator 44, the stator 6 is vibrated and rubbed by the grinding part 421 in the delivery pipe 42 to brush away the burrs, iron filings and other surface residues on the outside of the stator 6. At the same time, the electromagnet is started to absorb the iron filings. Finally, the stator 6 is cleaned again by the annular brush 45 and guided by the guide roller 46, and finally falls into the first shell 5, completing the assembly of the first stator 6 and the shell 5 to form an assembly, and then the air pump 37 is stopped.

[0071] When the first stator 6 is dropped and assembled in the conveying pipe 42, the heating element 331 heats the second shell 5 in the heating sleeve 33; when the first stator 6 is assembled, the cylinder 38 is raised and the rotary disk 21 is rotated, and the rotary disk 21 rotates the heated second shell 5 to the bottom of the bearing sleeve 41; at this time, the third shell is located under the heating sleeve 33, and the first assembly is located under the cooling sleeve 32, and the device enters a normal working state;

[0072] After the device enters normal working state, the cylinder 38 is lowered, and the cooling jacket 32 ​​and the heating jacket 33 are respectively inserted into the first assembly (the first shell equipped with the stator) and the third shell 5; the air pump 37 is started, the solenoid valve 425 is opened, and the gas enters the cooling jacket 32 ​​from the side of the cooling jacket 32 ​​through the air supply pipe 34 to take away the heat of the first assembly; it is transported to the heating jacket 33 through the hot air pipe 35 to preheat the third shell; it is discharged to the intake pipe 422 through the side of the heating jacket 33, and after the temperature of the gas is adjusted after heat exchange in the heat exchanger 36 on the intake pipe 422, the gas finally enters the delivery pipe 42, and the delivery pipe 42 keeps the newly added stator 6 inside warm, and finally the gas completes the cycle under the action of the air pump 37.

[0073] Next, the newly added stator 6 is placed in the delivery pipe 42, and is kept warm by the gas introduced into the delivery pipe 42, so that the temperature of the stator 6 is kept low and constant, while the burrs and debris on the outer surface of the stator 6 are removed, and finally falls into the second shell, completing the assembly of the second stator 6 and the shell 5, and this cycle is repeated. At the same time, it is worth mentioning that after the assembly is cooled, the assembly can be removed and replaced with a new shell.

[0074] The present invention and its embodiments are described schematically above, and the description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. Therefore, if a person skilled in the art is inspired by it and designs a structural method and an embodiment similar to the technical solution without creativity without departing from the purpose of the invention, they shall all fall within the protection scope of the present invention.

Claims

1. A motor stator thermal assembly device, comprising a frame (1), characterized in that: The frame (1) is provided with: A transfer assembly (2), the transfer assembly (2) comprising a turntable (21) rotatably arranged on a frame (1) and three limiting sleeves (22) arranged on the turntable (21) in a circular array; the limiting sleeves (22) are driven by the turntable (21) to cyclically switch between different workstations; A heat exchange assembly (3), the heat exchange assembly (3) comprising a bearing plate (31) which is lifted and arranged on the frame (1), and a cooling jacket (32) and a heating jacket (33) are arranged on the bearing plate (31); wherein the cooling jacket (32) is connected to an air supply pipe (34), and a heating element (331) is arranged inside the heating jacket (33); and after the cooling jacket (32) and the heating jacket (33) are lowered, they are sleeved on corresponding limiting jackets (22) to form a sealed space; And a stator supply assembly (4), wherein the stator supply assembly (4) comprises a bearing sleeve (41) located above the transfer assembly (2), and the bearing sleeve (41) is used to assemble the stator (6) into the heated shell (5).

2. The motor stator thermal assembly device according to claim 1, characterized in that: A hot air pipe (35) is connected between the cooling jacket (32) and the heating jacket (33), and the cooling air after heat exchange enters the heating jacket (33) through the hot air pipe (35) to preheat the shell (5) to be heated.

3. A motor stator thermal assembly device according to claim 1 or 2, characterized in that: A vibrator (44) is provided on the outer peripheral wall of the bearing sleeve (41); a delivery pipe (42) is provided inside the bearing sleeve (41); and a plurality of grinding portions (421) for grinding the stator (6) are provided on the inner wall of the delivery pipe (42).

4. The motor stator thermal assembly device according to claim 3, characterized in that: A magnet (43) is provided between the delivery pipe (42) and the bearing sleeve (41); an annular brush (45) is provided at the bottom of the delivery pipe (42); and the annular brush (45) is arranged on the inner wall of the bearing sleeve (41).

5. The motor stator thermal assembly device according to claim 3, characterized in that: The delivery pipe (42) is an air bag. An air inlet pipe (422) and an air outlet pipe (423) are provided on the delivery pipe (42) for adjusting the pressure of the gas in the delivery pipe (42).

6. The motor stator thermal assembly device according to claim 5, characterized in that: The air inlet pipe (422) is connected to the heating jacket (33) via a heat exchanger (36); the air outlet pipe (423) is connected to the air supply pipe (34) via an air pump (37).

7. The motor stator thermal assembly device according to claim 6, characterized in that: The inner wall of the delivery pipe (42) is corrugated; and guide rollers (46) distributed in a ring shape are provided at the outlet of the delivery pipe (42).

8. The motor stator thermal assembly device according to claim 7, characterized in that: A buffer pad (47) is provided at the contact point between the bearing sleeve (41) and the frame (1); and a sealing ring (221) is provided on the outer side of the limiting sleeve (22) and is fitted with the ends of the cooling sleeve (32) and the heating sleeve (33).

9. The motor stator thermal assembly device according to claim 2, characterized in that: One end of the hot air pipe (35) is located at the top of the inner cavity of the cooling jacket (32), and the other end extends to the bottom of the inner cavity of the heating jacket (33).

10. A motor stator thermal assembly process, based on the motor stator thermal assembly device according to claim 6, characterized in that: The following steps are included: S1, firstly put the shell (5) into the corresponding limiting sleeves (22) on the rotating disk (21); at this time, the three limiting sleeves (22) are respectively located at the heating station, the feeding station and the cooling station; S2, the carrying plate (31) descends, driving the cooling sleeve (32) and the heating sleeve (33) to be respectively sleeved on the limiting sleeves (22) of the cooling station and the heating station; S3, heating the shell (5) in the heating sleeve (33), when the shell (5) is heated to the set temperature, the carrier plate (31) drives the cooling sleeve (32) and the heating sleeve (33) to rise; then, the rotary disk (21) rotates, so that each limiting sleeve (22) and the shell (5) therein rotate to the next station; at this time, the heated shell (5) rotates from the heating station to the feeding station; and the shell (5) originally located at the cooling station rotates to the heating station; S4, the carrier plate (31) is lowered again, and the cooling jacket (32) and the heating jacket (33) are mounted on the limiting jacket (22) of the corresponding station; at the same time, the stator (6) is added into the shell (5) which is located at the feeding station and heated and expanded through the conveying pipe (42) to complete the assembly operation of the stator and form an assembly; during the assembly process, the heating jacket (33) continues to heat the newly transferred shell (5) therein; S5, lift the carrier plate (31) and rotate the turntable (21), the turntable (21) rotates the heated shell (5) again to the bottom of the carrier sleeve (41); at this time, a new shell is rotated under the heating sleeve (33), and the assembly is located under the cooling sleeve (32); S6, the carrier plate (31) descends, and the air pump (37) is started, the cooling air enters the cooling jacket (32) through the air supply pipe (34), takes away the heat of the assembly; the cooling air is transported to the heating jacket (33) through the hot air pipe (35), and the shell (5) therein is preheated; the cooling air is discharged to the air inlet pipe (422) through the heating jacket (33), and the temperature of the gas is adjusted after heat exchange in the heat exchanger (36) on the air inlet pipe (422), and the gas finally enters the delivery pipe (42), and the delivery pipe (42) keeps the internal stator (6) warm, and finally the gas completes the cycle under the action of the air pump (37); S7. After the assembly is cooled, the assembly is removed and replaced with a new housing (5), thus completing a complete assembly operation, and the cycle continues.

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