Stator shrinkage fit equipment and method

Abstract

The invention relates to a stator shrinkage fit device and method, and the device comprises a pedestal, the pedestal is provided with a housing storage station, a label code printing mechanism, and a stator assembly mechanism, and the stator assembly mechanism comprises a label code recognition mechanism, a heating mechanism, a press fitting mechanism, a cooling mechanism, and a conveying mechanism. The conveying mechanism conveys a machine shell to sequentially pass through the label code recognition mechanism, the heating mechanism, the press-fitting mechanism and the cooling mechanism, a stator feeding mechanism for feeding materials to the press-fitting mechanism is further arranged on the base, and a defective product recycling station is arranged on the base. The base is further provided with a mechanical arm for conveying the machine shells among the machine shell storage station, the label coding mechanism and the conveying mechanism, the mechanical arm conveys defective products of the machine shells to the defective product recycling station, two-dimensional code labels are engraved on the machine shells through the label coding mechanism, follow-up source tracing is facilitated, and the production efficiency is improved. Automatic assembly of the stator hot jacket is achieved through the mechanical arm, the heating mechanism, the stator assembly mechanism and the stator feeding mechanism.

Description

Technical Field

[0001] The invention relates to the field of motor stator assembly, and more specifically to a stator shrink-fit device and method. Background Art

[0002] In the general field of drive mechanism manufacturing, the stator and drive mechanism housing are generally positioned visually during the process of shrink-fitting the stator into the shell, and the operator wearing asbestos gloves takes out the drive mechanism housing heated by the high-frequency shrink-fit machine and puts it on the stator.

[0003] Since the temperature of the driving mechanism shell is high after heating, it is easy to burn the operator, which poses a certain safety hazard. At the same time, the manual operation efficiency is low. It is easy to bump into and cause deformation during the turning and lifting process, resulting in the scrapping of the workpiece. The installation position and coaxiality of the stator and the driving mechanism shell cannot be guaranteed after installation, and the qualified rate is low, which affects the use of the driving mechanism. At the same time, the defective products produced cannot be traced back to the source. Summary of the invention

[0004] In view of the above-mentioned defects in the prior art, a stator shrink-fit device and method are provided.

[0005] The technical solution adopted by the present invention to solve its technical problems is: a stator shrink-fit device, including a base, a shell storage station is arranged on the base, a label coding mechanism is arranged on the base, a stator assembly mechanism is arranged on the base, the stator assembly mechanism includes a label code recognition mechanism, a heating mechanism, a press-fitting mechanism, a cooling mechanism and a conveying mechanism, the conveying mechanism conveys the shell through the label code recognition mechanism, the heating mechanism, the press-fitting mechanism and the cooling mechanism in sequence, the base is also provided with a stator feeding mechanism for feeding materials to the press-fitting mechanism, a defective product recovery station is arranged on the base, and a robot for conveying the shell between the shell storage station, the label coding mechanism and the conveying mechanism is also provided on the base, and the robot also conveys defective shells to the defective product recovery station.

[0006] Preferably, the stator feeding mechanism comprises a belt conveyor, a guide anti-fool plate, a first carrier plate and a second carrier plate, the first carrier plate and the second carrier plate constitute a bearing plate, the bearing plate is located directly above the pressing mechanism, the belt conveyor conveys the stator to the top surface of the bearing plate, the guide anti-fool plate is located directly above the belt conveyor and the bearing plate, the guide anti-fool plate enables the stator to enter the bearing plate in a specific posture, a first support frame for supporting the belt conveyor and the guide anti-fool plate is provided on the base, two first cylinders for driving the first carrier plate and the second carrier plate to move away from each other are provided on the guide anti-fool plate, a plurality of guide columns passing through the guide anti-fool plate, the stator and the bearing plate are provided above the guide anti-fool plate, and a second cylinder for driving the guide columns to move up and down is provided above the guide anti-fool plate.

[0007] Preferably, two slide grooves are provided at the top of the stator, and a protrusion is also provided at the top of the stator. The bottom surface of the guide anti-foolproof plate is provided with an avoidance slide groove extending along the conveying direction of the belt conveyor and two guide rails. The avoidance slide groove avoids the protrusion, and the two guide rails are inserted into the corresponding slide grooves.

[0008] Preferably, the upper surface of the first carrier plate and the upper surface of the second carrier plate are both provided with a limiting protrusion located on the side away from the belt conveyor, a plurality of toggle plates are evenly spaced on the belt of the belt conveyor, the first carrier plate and the second carrier plate are both provided with a first avoidance notch for avoiding the toggle plate, and the first carrier plate and the second carrier plate are also provided with a second avoidance notch for avoiding the guide column.

[0009] Preferably, the pressing mechanism includes a sliding cylinder, an inner support chuck, a third cylinder and a baffle, the third cylinder is located above the conveying mechanism, a second support frame supporting the third cylinder is provided on the base, the output end of the third cylinder is connected with a lifting plate, the inner support chuck is provided on the bottom surface of the lifting plate, the baffle is elastically and telescopically provided on the bottom surface of the lifting plate, the baffle is an annular structure, the inner support chuck is located in the inner ring of the baffle, and the base is also provided with a lifting mechanism for lifting the stator directly below the inner support chuck, the sliding cylinder is located directly below the bearing plate, the sliding cylinder conveys the stator to the bottom of the inner support chuck, the sliding cylinder is provided with a jig for carrying the stator at a position directly below the bearing plate, the jig is provided with a plurality of limit columns abutting against and coaxial with corresponding guide columns, and the base is provided with a third support frame supporting the sliding cylinder.

[0010] Preferably, the conveying mechanism includes a driving mechanism and a turntable, the driving mechanism is arranged on a base, the turntable is arranged on the driving mechanism, the turntable is provided with four loading through holes for loading the housing at equal intervals along the circumference of its edge, the heating mechanism, the pressing mechanism, the cooling mechanism and the manipulator are arranged at intervals along the circumference of the turntable, the heating mechanism, the pressing mechanism and the cooling mechanism are correspondingly located directly above any three loading through holes, the label code recognition mechanism is a code scanning camera, a turntable through hole is provided at the center position of the turntable, the code scanning camera passes through the turntable through hole, and the lens of the code scanning camera faces the remaining loading through hole.

[0011] Preferably, the heating mechanism comprises a vertical linear slide and a high-frequency heating machine, the linear slide is arranged on a base, and the high-frequency heating machine is arranged on the linear slide.

[0012] Preferably, the cooling mechanism comprises a fan and a fourth support frame, the fourth support frame is arranged on the base, and the fan is arranged on the fourth support frame.

[0013] Preferably, the label coding mechanism includes a laser coding machine, a smoking machine, a cylinder conveyor and a cover shell, wherein the laser coding machine, the smoking machine and the cylinder conveyor are all arranged on a base, the cover shell is arranged on the base and covers one end of the conveying direction of the cylinder conveyor, the output end of the laser coding machine extends into the cover shell, and the smoking pipe of the smoking machine also extends into the cover shell.

[0014] A NTC welding and testing method, the method comprising the following steps:

[0015] S101, the robot transports the housing from the housing storage station to the label coding mechanism, and the label coding mechanism prints a QR code label on the housing.

[0016] S102, the robot transports the casing with the QR code printed on it to the transport mechanism, the transport mechanism transports the casing to the position of the label code recognition mechanism, and the label code recognition mechanism scans the QR code of the casing on the transport mechanism.

[0017] S103, the robot transports the housing that fails the QR code scanning to the defective product recovery station, and the transport mechanism transports the qualified housing to the position of the heating mechanism, and the heating mechanism heats the housing, so that the housing expands due to the heat.

[0018] S104, the conveying mechanism conveys the casing heated to the set temperature to the position of the pressing mechanism. At this time, the stator feeding mechanism has already fed the stator onto the pressing mechanism, and the pressing mechanism installs the stator into the casing.

[0019] S105, the conveying mechanism conveys the housing with the stator installed to the position of the cooling mechanism, and the cooling mechanism cools the housing, so that the housing shrinks when it is cold, and the stator and the housing are interference fit.

[0020] S106, the conveying mechanism conveys the cooled housing back to the position of the label code recognition mechanism, and the robot conveys the housing to the next processing station.

[0021] The beneficial effects of the present invention are as follows: a two-dimensional code label is printed on the casing by a label coding mechanism, so as to facilitate the traceability of defective products in subsequent processing or defective products of the driving mechanism finished product; at the same time, the casing is conveyed by a robot, the casing is heated by a heating mechanism, and the stator is installed in the heated casing by a stator assembly mechanism and a stator feeding mechanism, thereby realizing the automatic assembly of the stator shrink sleeve and greatly improving the assembly efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a schematic diagram of the overall top view structure of an embodiment of the present invention;

[0023] Figure 2 Embodiment of the present invention Figure 1 A magnified schematic diagram of the middle A area;

[0024] Figure 3 This is a structural schematic diagram from one perspective of an embodiment of the present invention without the stator feeding mechanism;

[0025] Figure 4 Embodiment of the present invention Figure 3 A magnified schematic diagram of the middle B area;

[0026] Figure 5 Embodiment of the present invention Figure 3 Enlarged schematic diagram of the middle C area;

[0027] Figure 6 is a schematic diagram of the overall side view structure of an embodiment of the present invention;

[0028] Figure 7 Embodiment of the present invention Figure 6 The enlarged schematic diagram of the D area in the middle;

[0029] Figure 8 This is a schematic structural diagram from another perspective of an embodiment of the present invention without the stator feeding mechanism;

[0030] Fig. 9 Embodiment of the present invention Figure 8 Enlarged schematic diagram of the middle E area;

[0031] Fig.10 Schematic diagram of the structure of the stator feeding mechanism of an embodiment of the present invention;

[0032] Fig.11 Schematic diagram of the structure of the first carrier plate and the second carrier plate according to an embodiment of the present invention.

[0033] Figure numerals: 1 base, 10 housing storage station, 2 label coding mechanism, 20 laser coding machine, 21 smoking machine, 22 cylinder conveyor, 23 cover, 3 stator assembly mechanism, 30 label code recognition mechanism, 31 heating mechanism, 310 linear slide, 311 high frequency heating machine, 32 press fitting mechanism, 320 slide cylinder, 321 fixture, 322 limit column, 323 inner support chuck, 324 third cylinder, 325 baffle, 326 second support frame, 327 lifting plate, 328 jacking mechanism, 329 third support frame, 3 3 cooling mechanism, 330 fan, 331 fourth support frame, 34 conveying mechanism, 340 driving mechanism, 341 turntable, 342 loading through hole, 4 stator feeding mechanism, 40 belt conveyor, 400 toggle plate, 41 guide anti-fool plate, 410 avoidance slide, 411 guide slide rail, 42 first loading plate, 43 second loading plate, 44 limiting protrusion, 45 first avoidance gap, 46 second avoidance gap, 47 first support frame, 48 first cylinder, 49 guide column, 490 second cylinder, 5 defective product recovery station, 6 manipulator. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the following will be clearly and completely described in combination with the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are partial embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work belong to the protection scope of the present invention. In addition, the directional terms mentioned in the present invention, such as "up", "down", "front", "back", "left", "right", "inside", "outside", etc., are only referenced to the directions of the attached diagrams. The directional terms used are for better and clearer explanation and understanding of the present invention, rather than indicating or implying the orientation that the present invention must have, and therefore cannot be understood as limitations on the present invention.

[0035] Embodiments of the present invention Figures 1 to 11 As shown in, a stator shrink-fit device and method include a base 1, a housing storage station 10 is arranged on the base 1, and the housing storage station 10 is located at the right front side of the upper surface of the base 1, a label coding mechanism 2 is arranged on the base 1, and the label coding mechanism 2 is located at the position directly behind the housing storage station 10 on the top surface of the base 1, a stator assembly mechanism 3 is arranged on the base 1, and the stator assembly mechanism 3 is located at the left rear side of the top surface of the base 1, and the stator assembly mechanism 3 includes a label code recognition mechanism 30, a heating mechanism 31, a pressing mechanism 32, a cooling mechanism 33 and a conveying mechanism 34, The conveying mechanism 34 conveys the casing through the label code recognition mechanism 30, the heating mechanism 31, the pressing mechanism 32 and the cooling mechanism 33 in sequence. The base 1 is also provided with a stator feeding mechanism 4 for feeding materials to the pressing mechanism 32. The base 1 is provided with a defective product recovery station 5, which is located on the top surface of the base 1 at a position just to the left of the casing storage station 10. The base 1 is also provided with a robot 6 for conveying the casing between the casing storage station 10, the label coding mechanism 2 and the conveying mechanism 34. The robot 6 also conveys defective casings to the defective product recovery station 5.

[0036] Further improvements such as Fig.10 and Fig.11As shown in, the stator feeding mechanism 4 includes a belt conveyor 40, a guide anti-fool plate 41, a first loading plate 42 and a second loading plate 43, the first loading plate 42 and the second loading plate 43 constitute a bearing plate, the first loading plate 42 and the second loading plate 43 are symmetrical in the left-right direction, the bearing plate is located directly above the pressing mechanism 32, the belt conveyor 40 conveys the stator to the top surface of the bearing plate, the belt conveyor 40 extends in the front-to-back direction, the bearing plate is located directly behind the belt conveyor 40, the guide anti-fool plate 41 is located directly above the belt conveyor 40 and the bearing plate, that is, the guide anti-fool plate extends along the front-to-back direction of the belt conveyor 40, the rear end of the guide anti-fool plate 41 is located directly above the bearing plate, the guide anti-fool plate 41 allows the stator to enter the bearing plate in a specific posture, and at the same time allows the operator to only enter the belt conveyor 40 in a specific posture when putting the stator into the belt conveyor 40, without the need to subsequently adjust the posture of the stator, which plays an anti-fool role, and the base 1 is provided with a support belt conveyor 40 and a first support frame 47 for guiding the anti-foolproof plate 41, the guiding anti-foolproof plate 41 is provided with two first cylinders 48 for driving the first loading plate 42 and the second loading plate 43 to move away from each other, a plurality of guide posts 49 are provided above the guiding anti-foolproof plate 41, passing through the guiding anti-foolproof plate 41, the stator and the loading plate, the stator has four positioning holes, and the guide posts 49 are also provided with four corresponding ones, the first support frame 47 is provided with a second cylinder 490 for driving the guide posts 49 to move up and down above the guiding anti-foolproof plate 41, and the second The output end of the cylinder 490 is connected to a mounting plate, and four guide pillars 49 are arranged on the bottom surface of the mounting plate. After the stator enters the carrier plate, the second cylinder 490 drives the guide pillars 49 to move downward and insert them into the corresponding positioning holes on the stator, and then the two first cylinders 48 drive the first carrier plate 42 and the second carrier plate 43 to move away from each other. Finally, the stator slides along the guide pillars 49 to the press-fitting mechanism 32 in a specific posture, that is, the stator is loaded onto the press-fitting mechanism 32 in a specific posture, and workers do not need to manually adjust the stator subsequently.

[0037] Further improvements such as Figure 4 , Fig.10 and Fig.11As shown in, the top of the stator is provided with two slide grooves, and the two slide grooves are correspondingly located on the left and right sides of the top surface of the stator. The top of the stator is also provided with a protrusion, which is located between the two slide grooves, and the protrusion is close to the slide groove on one side. The bottom surface of the guide anti-fool plate 41 is provided with an avoidance slide groove 410 and two guide rails 411 extending along the conveying direction of the belt conveyor 40. The avoidance slide groove 410 avoids the protrusion, that is, the protrusion slides in the avoidance slide groove 410, and the two guide rails 411 are inserted into the corresponding slide grooves. The guide rails 411 cooperate with the slide groove to keep the stator unchanged in posture when moving on the belt conveyor 40. The protrusion and the avoidance slide groove 410 allow the stator to be placed on the belt conveyor 40 only in a specific posture, which plays an anti-fool effect. The upper surface of the first loading plate 42 and the upper surface of the second loading plate 43 are both provided with a limiting protrusion 4 located on the side away from the belt conveyor 40. 4. The sides of the two limiting protrusions 44 close to the belt conveyor 40 are inclined surfaces, and the two inclined surfaces are inclined from the side where the two limiting protrusions 44 are away from each other to the side where the two limiting protrusions 44 are in contact with each other. A plurality of toggle plates 400 are evenly spaced on the belt of the belt conveyor 40, and the stator is transported to the carrier plate composed of the first carrier plate 42 and the second carrier plate 43 through the toggle plates 400. At the same time, the toggle plates 400 cooperate with the limiting protrusions 44 to transport the stator to a specific position, so as to facilitate the guide column 49 to be inserted into the positioning hole on the stator. The first carrier plate 42 and the second carrier plate 43 are both provided with a first avoidance notch 45 for avoiding the toggle plate 400, and the first carrier plate 42 and the second carrier plate 43 are also both provided with a second avoidance notch 46 for avoiding the guide column 49. The second avoidance notch 46 avoids the guide column 49 when the first carrier plate 42 and the second carrier plate 43 are away from each other.

[0038] Further improvements such as Figure 4 and Figure 7As shown in, the pressing mechanism 32 includes a slide cylinder 320, an inner support chuck 323, a third cylinder 324 and a baffle 325, the third cylinder 324 is located above the conveying mechanism 34, the third cylinder 324 is located at the upper right of the guide anti-stuck plate 41, and the base 1 is provided with a second support frame 326 supporting the third cylinder 324, the output end of the third cylinder 324 is connected to a lifting plate 327, the inner support chuck 323 is arranged on the bottom surface of the lifting plate 327, the baffle 325 is elastically and telescopically arranged on the bottom surface of the lifting plate 327, the baffle 325 is an annular structure, the inner support chuck 323 is located in the inner ring of the baffle 325, and the base 1 is also provided with a lifting mechanism 3 for lifting the stator directly below the inner support chuck 323 28. The lifting mechanism 328 lifts the casing and cooperates with the inner support clamp 323 to press down the stator, thereby installing the stator into the casing. The slide cylinder 320 is located directly below the load-bearing plate. The slide cylinder 320 extends in the left and right directions. The slide cylinder 320 transports the stator to the bottom of the inner support clamp 323. The inner support clamp 323 is located on the upper right side of the slide cylinder 320. The slide cylinder 320 is provided with a fixture 321 for supporting the stator at a position directly below the load-bearing plate. The fixture 321 is provided with four limit columns 322 that are coaxial with the corresponding guide columns 49. The guide columns 49 move downward under the drive of the second cylinder 490 and abut against the corresponding limit columns 322. The base 1 is provided with a third support frame 329 that supports the slide cylinder 320.

[0039] Further improvements such as Figure 1 , Figure 8 and Fig. 9As shown in, the conveying mechanism 34 includes a driving mechanism 340 and a turntable 341, the driving mechanism 340 is arranged on the base 1, the turntable 341 is arranged on the driving mechanism 340, the driving mechanism 340 drives the turntable 341 to rotate, the turntable 341 is a disc-shaped structure, the turntable 341 is provided with four loading through holes 342 for loading the casing at equal intervals along the circumference of its edge, preferably, the turntable 341 is provided with four loading tools for loading and positioning the casing at equal intervals along the circumference of its edge, the loading through holes 342 are provided on the loading tool, the heating mechanism 31, the pressing mechanism 32, the cooling mechanism 33 and the manipulator 6 are arranged at intervals along the circumference of the turntable 341, the heating mechanism 31, the pressing mechanism 32, the cooling mechanism 33 and the manipulator 6 are arranged at intervals along the circumference of the turntable 341, and the heating mechanism 31, the pressing mechanism 32, the cooling mechanism 33 and the manipulator 6 are arranged at intervals along the circumference of the turntable 341. The structure 32 and the cooling mechanism 33 are correspondingly located directly above any three loading through holes 342. Preferably, the heating mechanism 31 is located directly above the loading through hole 342 on the rear side of the turntable 341, the pressing mechanism 32 is located directly above the loading through hole 342 on the left side of the turntable 341, the cooling mechanism 33 is located directly above the loading through hole 342 on the front side of the turntable 341, and the manipulator 6 is located on the right side of the turntable 341. The label code recognition mechanism 30 is a code scanning camera, and a turntable through hole is provided at the center position of the turntable 341. The code scanning camera passes through the turntable through hole, and the lens of the code scanning camera faces the remaining loading through hole 342, that is, the lens of the code scanning camera faces the loading through hole 342 located on the right side of the turntable 341.

[0040] Further improvements such as Figure 6 and Figure 7 As shown in, the heating mechanism 31 includes a vertical linear slide 310 and a high-frequency heating machine 311, the linear slide 310 is arranged on the base 1, the high-frequency heating machine 311 is arranged on the linear slide 310, the linear slide 310 drives the heating coil of the high-frequency heating machine 311 to extend into the casing, thereby heating the casing, the cooling mechanism 33 includes a fan 330 and a fourth support frame 331, the fourth support frame 331 is arranged on the base 1, the fan 330 is arranged on the fourth support frame 331, preferably, the fourth support frame 331 is provided with a lifting mechanism for driving the fan 330 to move up and down, the fan 330 is arranged on the lifting mechanism, the lifting mechanism is also a linear slide 310, the fan 330 is provided with a wind hood covering the casing, the air outlet of the fan is located in the wind hood, the lifting mechanism drives the wind hood to cover the casing, so that the cooling wind is concentrated to blow toward the casing, while improving the cooling efficiency, preventing the cooling wind from affecting the heating mechanism 31.

[0041] Further improvements such as Figure 6 and Figure 7As shown in the figure, the label coding mechanism 2 includes a laser coding machine 20, a smoking machine 21, a cylinder conveyor 22 and a cover 23. The laser coding machine 20, the smoking machine 21 and the cylinder conveyor 22 are all arranged on the base 1. The cover 23 is arranged on the base 1 and is covered on one end of the conveying direction of the cylinder conveyor 22. The cover 23 covers the right end of the cylinder conveyor 22. The output end of the laser coding machine 20 extends into the cover 23, and the smoking pipe of the smoking machine 21 also extends into the cover 23. The right end of the cover 23 is provided with an opening, and the output end of the laser coding machine 20 and the smoking pipe of the smoking machine 21 extend into the cover 23 through the opening at the right end of the cover 23.

[0042] A NTC welding and testing method, the method comprising the following steps:

[0043] S101, the robot 6 transports the housing from the housing storage station 10 to the label coding mechanism 2, and the label coding mechanism 2 prints a two-dimensional code label on the housing.

[0044] S102 , the robot 6 transports the housing with the two-dimensional code engraved thereon to the transport mechanism 34 , the transport mechanism 34 transports the housing to the position of the label code recognition mechanism 30 , and the label code recognition mechanism 30 scans the two-dimensional code of the housing on the transport mechanism 34 .

[0045] S103, the robot 6 transports the housing that fails the two-dimensional code scanning to the defective product recovery station 5, and the transport mechanism 34 transports the qualified housing to the position of the heating mechanism 31, and the heating mechanism 31 heats the housing, so that the housing expands due to the heat.

[0046] S104, the conveying mechanism 34 conveys the casing heated to the set temperature to the position of the pressing mechanism 32. At this time, the stator feeding mechanism 4 has fed the stator onto the pressing mechanism 32, and the pressing mechanism 32 installs the stator into the casing.

[0047] S105, the conveying mechanism 34 conveys the housing with the stator installed to the position of the cooling mechanism 33, and the cooling mechanism 33 cools the housing, so that the housing shrinks when it is cold, so that the stator and the housing have an interference fit.

[0048] S106, the conveying mechanism 34 conveys the cooled housing back to the position of the label code recognition mechanism 30 again, and the robot 6 conveys the housing to the next processing station.

[0049] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all these improvements and changes should fall within the scope of protection of the appended claims of the present invention.

Claims

1. A stator shrink-fit device, comprising a base; characterized in that: The base is provided with a casing storage station; the base is provided with a label coding mechanism; the base is provided with a stator assembly mechanism; the stator assembly mechanism includes a label code recognition mechanism, a heating mechanism, a pressing mechanism, a cooling mechanism and a conveying mechanism; the conveying mechanism conveys the casing through the label code recognition mechanism, the heating mechanism, the pressing mechanism and the cooling mechanism in sequence; the base is also provided with a stator feeding mechanism for feeding materials to the pressing mechanism; the base is provided with a defective product recovery station; the base is also provided with a robot for conveying the casing between the casing storage station, the label coding mechanism and the conveying mechanism; the robot also conveys defective casings to the defective product recovery station.

2. A stator shrink-fit device according to claim 1, characterized in that: The stator feeding mechanism comprises a belt conveyor, a guide anti-fool plate, a first loading plate and a second loading plate; the first loading plate and the second loading plate constitute a bearing plate; the bearing plate is located directly above the pressing mechanism; the belt conveyor conveys the stator to the top surface of the bearing plate; the guide anti-fool plate is located directly above the belt conveyor and the bearing plate; The guide anti-foolproof plate enables the stator to enter the carrying plate in a specific posture; a first support frame supporting the belt conveyor and the guide anti-foolproof plate is arranged on the base; two first cylinders driving the first loading plate and the second loading plate to move away from each other are arranged on the guide anti-foolproof plate; a plurality of guide columns passing through the guide anti-foolproof plate, the stator and the carrying plate are arranged above the guide anti-foolproof plate; and a second cylinder driving the guide columns to move up and down is arranged above the guide anti-foolproof plate on the first support frame.

3. The stator shrink-fit device according to claim 2, characterized in that: Two slide grooves are arranged at the top of the stator; a protrusion is also arranged at the top of the stator; an avoidance slide groove and two guide rails extending along the conveying direction of the belt conveyor are arranged on the bottom surface of the guide anti-foolproof plate; the avoidance slide groove avoids the protrusion; the two guide rails are inserted into the corresponding slide grooves.

4. The stator shrink-fit device according to claim 2, characterized in that: The upper surface of the first carrier plate and the upper surface of the second carrier plate are both provided with a limiting protrusion located on the side away from the belt conveyor; a plurality of toggle plates are evenly spaced on the belt of the belt conveyor; the first carrier plate and the second carrier plate are both provided with a first avoidance notch for avoiding the toggle plate; the first carrier plate and the second carrier plate are also provided with a second avoidance notch for avoiding the guide column.

5. The stator shrink-fit device according to claim 2, characterized in that: The pressing mechanism includes a sliding cylinder, an inner support chuck, a third cylinder and a baffle; the third cylinder is located above the conveying mechanism; a second support frame supporting the third cylinder is arranged on the base; the output end of the third cylinder is connected with a lifting plate; the inner support chuck is arranged on the bottom surface of the lifting plate; the baffle is elastically and telescopically arranged on the bottom surface of the lifting plate; the baffle is an annular structure; the inner support chuck is located in the inner ring of the baffle; the base is also provided with a lifting mechanism for lifting the stator directly below the inner support chuck; the sliding cylinder is located directly below the bearing plate; the sliding cylinder conveys the stator to the bottom of the inner support chuck; the sliding cylinder is provided with a jig for carrying the stator at a position directly below the bearing plate; a plurality of limit columns abutting against and coaxial with corresponding guide columns are arranged on the jig; and a third support frame supporting the sliding cylinder is arranged on the base.

6. The stator shrink-fit device according to claim 1, characterized in that: The conveying mechanism includes a driving mechanism and a turntable; the driving mechanism is arranged on a base; the turntable is arranged on the driving mechanism; the turntable is provided with four loading through holes for loading the housing at equal intervals along the circumference of its edge; the heating mechanism, the pressing mechanism, the cooling mechanism and the manipulator are arranged at intervals along the circumference of the turntable; the heating mechanism, the pressing mechanism and the cooling mechanism are correspondingly located directly above any three loading through holes; the label code recognition mechanism is a code scanning camera; a turntable through hole is provided at the center of the turntable; the code scanning camera passes through the turntable through hole; the lens of the code scanning camera faces the remaining loading through hole.

7. The stator shrink-fit device according to claim 1, characterized in that: The heating mechanism comprises a vertical linear slide and a high-frequency heating machine; the linear slide is arranged on a base; and the high-frequency heating machine is arranged on the linear slide.

8. The stator shrink-fit device according to claim 1, characterized in that: The cooling mechanism comprises a fan and a fourth support frame; the fourth support frame is arranged on the base; and the fan is arranged on the fourth support frame.

9. The stator shrink-fit device according to claim 1, characterized in that: The label coding mechanism includes a laser coding machine, a smoking machine, a cylinder conveyor and a cover; the laser coding machine, the smoking machine and the cylinder conveyor are all arranged on a base; the cover is arranged on the base and covers one end of the cylinder conveyor in the conveying direction; the output end of the laser coding machine extends into the cover; the smoking pipe of the smoking machine also extends into the cover.

10. A stator shrink-fit method, based on an NTC welding and testing device according to any one of claims 1 to 9, characterized in that: The method comprises the following steps: S101, the robot transports the housing from the housing storage station to the label coding mechanism, and the label coding mechanism prints a QR code label on the housing. S102, the robot transports the casing with the QR code printed on it to the transport mechanism, the transport mechanism transports the casing to the position of the label code recognition mechanism, and the label code recognition mechanism scans the QR code of the casing on the transport mechanism. S103, the robot transports the housing that fails the QR code scanning to the defective product recovery station, and the transport mechanism transports the qualified housing to the position of the heating mechanism, and the heating mechanism heats the housing, so that the housing expands due to the heat. S104, the conveying mechanism conveys the casing heated to the set temperature to the position of the pressing mechanism. At this time, the stator feeding mechanism has already fed the stator onto the pressing mechanism, and the pressing mechanism installs the stator into the casing. S105, the conveying mechanism conveys the housing with the stator installed to the position of the cooling mechanism, and the cooling mechanism cools the housing, so that the housing shrinks when it is cold, so that the stator and the housing have an interference fit. S106, the conveying mechanism conveys the cooled housing back to the position of the label code recognition mechanism, and the robot conveys the housing to the next processing station.

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