Detection device and detection method after stator encapsulation

Abstract

The invention relates to the technical field of stator detection, and particularly discloses a detection device for a stator after encapsulation, and the device comprises a transportation mechanism; an inner diameter detection mechanism; the detection rod is mounted on the inner diameter detection mechanism, the detection rod comprises a guide cylinder, a connecting rod connected to the guide cylinder, a correction main body connected with the connecting rod, a mounting seat movably connected to the correction main body and a standard shaft connected to the mounting seat, and magnetic parts are arranged on the opposite surfaces of the correction main body and the mounting seat; and the performance detection mechanism is arranged on the track of the conveying mechanism. According to the invention, the correction cylinder is movably connected with the mounting seat and the standard shaft through the correction column, and the two groups of magnetic pieces are matched, so that the standard shaft can be slightly inclined when the standard shaft is in contact with the top of the stator, and therefore, the standard shaft can be conveniently inserted into the inner diameter hole of the stator, and the detection efficiency is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of stator detection, and in particular relates to a detection device and a detection method after stator potting. Background Art

[0002] In the motor manufacturing process, the circular core stator is an important part of the motor, and the accuracy and integrity of its internal structure are crucial to the performance of the motor. After the circular core stator and the motor housing are assembled, it needs to be potted, and the gap between the circular core stator and the motor housing is filled with potting glue. During the potting process, the internal dimensions of the circular core stator may still change due to various factors (such as material shrinkage, slight deviations in the assembly process, etc.). Therefore, after potting, it is generally necessary to check the inner diameter of the circular stator with a through gauge, which can detect these problems in time and avoid motor performance degradation or safety hazards caused by size mismatch.

[0003] At present, when testing the internal strength of the stator after potting, a standard shaft is generally inserted into the stator for testing. If the standard shaft can be inserted into the stator, it means that the inner diameter of the stator is qualified. If the standard shaft is blocked or cannot be inserted into the stator during the insertion process, it means that the inner diameter of the stator is unqualified. The unqualified ones are returned for manual inspection.

[0004] In response to the above technical problems, the applicant has retrieved some prior art to detect the inner diameter of the stator. For example, the patent publication number is CN220541933U. Its main technical means is to place the stator in a fixed groove through an external manipulator and clamp it through a clamping mechanism. After it is fixed in place, the standard shaft is driven by the lifting unit to move down quickly and insert it into the inner hole of the stator. When the standard shaft can be normally inserted into the inner hole of the stator, it indicates that the inner diameter of the stator meets the requirements. If the standard shaft cannot be inserted into the inner hole, the standard shaft pushes the movable shaft up, thereby triggering the first in-place detection unit, so as to find defective products in time. After the applicant's analysis, the disadvantage of this technical solution is that if the base is offset in the above solution, it is difficult for the standard shaft to be inserted into the inner diameter hole of the stator. Since the length of the circular magnetic core stator is long, the depth of its inner diameter hole is deep, and the diameter of the inner diameter hole is small, it is more difficult to ensure the concentricity of the standard shaft and the inner diameter hole of the circular magnetic core stator, that is, it is more difficult to insert the standard shaft into the inner diameter hole, thereby reducing the detection efficiency. Summary of the invention

[0005] The purpose of the present invention is to provide a detection device and a detection method after stator potting in view of the shortcomings of the prior art, so as to solve the technical problem that it is difficult to insert a standard shaft into the inner diameter hole of a circular magnetic core stator.

[0006] The purpose of the present invention can be achieved through the following technical solutions:

[0007] A testing device for a potted stator, comprising a transport mechanism for transporting the potted stator to be tested, and further comprising:

[0008] A transport mechanism, wherein the transport mechanism transports the potted stator to be tested to the transport mechanism;

[0009] An inner diameter detection mechanism, wherein the inner diameter detection mechanism is on the track of the transport mechanism;

[0010] A detection rod, which is mounted on the inner diameter detection mechanism, and includes a guide cylinder, a connecting rod connected to the guide cylinder, a correction body connected to the connecting rod, a mounting seat movably connected to the correction body, and a standard shaft connected to the mounting seat, wherein the opposite surfaces of the correction body and the mounting seat are both provided with magnetic parts;

[0011] A performance testing mechanism is located on the track of the transport mechanism.

[0012] As a preferred embodiment of the above technical solution, the correction body includes an adapter block and a correction cylinder, the adapter block is fixedly sleeved on the top of the correction cylinder, the magnetic part includes magnet one and magnet two, a plurality of magnets two are installed on a side of the correction cylinder close to the mounting seat, and a plurality of magnets one are installed on a side of the mounting seat close to the correction cylinder, the number of magnets one and magnets two is the same, and a gap is reserved between the correction cylinder and the mounting seat.

[0013] As a preferred embodiment of the above technical solution, a correction column is installed in the correction cylinder, and the correction column extends out of the correction cylinder and is fixedly connected to the mounting seat. The correction column is located in the correction cylinder and two groups of correction parts are symmetrically installed up and down. The correction parts include a retaining ring and a number of steel balls. The several steel balls are installed in the holes on the retaining ring. The steel balls have space to move up and down in the holes on the retaining ring. The retaining ring is sleeved on the correction column, and there is space for vertical movement between the upper retaining ring and the adapter block.

[0014] As a preferred embodiment of the above technical solution, the inner diameter detection mechanism includes a mounting frame, a telescopic part 2 and a guide block, the mounting frame is provided with a mounting plate, the mounting plate is provided with a slide, the telescopic part 2 is installed on the top of the slide, a guide block is slidably installed on the slide, the output end of the telescopic part 2 is connected to the guide block, the detection rod passes through the guide block, the guide cylinder is fixed on the guide block, and a positioning mechanism is installed on the inner diameter detection mechanism.

[0015] As a preferred embodiment of the above technical solution, the transportation mechanism includes:

[0016] Screw module;

[0017] A slide, the slide being movably mounted on the screw module;

[0018] A support plate, wherein the support plate is fixed on the slide;

[0019] The positioning jig is fixed on the support plate, and a circular arc notch is provided at the bottom of the positioning jig.

[0020] As a preferred embodiment of the above technical solution, the positioning mechanism includes:

[0021] A driving rod, which is fixed on the guide block and arranged longitudinally;

[0022] The positioning piece includes a positioning seat, the positioning seat is fixed on the mounting frame, and a longitudinal downward pressure chamber, a transverse connecting channel and a longitudinal movable chamber are respectively provided on the positioning seat. The downward pressure chamber is connected with the movable chamber through the connecting channel, and the connecting channel is located at the lowest point of the downward pressure chamber and the movable chamber. A downward pressure block is installed in the downward pressure chamber, and the downward pressure block extends through the positioning seat. An elastic piece 2 is connected between the downward pressure block and the bottom of the downward pressure chamber. When the driving rod moves downward, the downward pressure block will be squeezed to move downward. A positioning column is installed in the movable cavity in a movable sleeve, and the positioning column is longitudinally coaxial with the standard shaft. When the positioning fixture moves to the positioning seat, the positioning column moves up through the arc notch and is inserted into the positioning fixture.

[0023] As a preferred embodiment of the above technical solution, a magnetic ring 1 is arranged in the movable cavity, and a magnetic ring 2 is embedded and installed on the periphery of the positioning column, and the magnetic properties of the magnetic ring 1 and the magnetic ring 2 are opposite.

[0024] As a preferred embodiment of the above technical solution, the connecting rod passes through the guide cylinder, and a sensing component is installed at one end of the connecting rod extending out of the guide cylinder. The sensing component rests on the guide cylinder, and a convex ring is provided on the periphery of the connecting rod. An elastic component 1 is connected between the convex ring and the guide cylinder, and the elastic component 1 is located on the periphery of the connecting rod.

[0025] As a preferred embodiment of the above technical solution, a fixing plate is fixed on the support plate, a telescopic member 1 is installed on the fixing plate, a pressure plate is installed on the output end of the telescopic member 1, and when the pressure plate moves downward, it abuts against the motor housing with the circular magnetic core stator, and a notch is opened on the pressure plate, so that the circular magnetic core stator is exposed to the outside.

[0026] A method for using a stator potting detection device, the method is applied to the stator potting detection device as described above, the method comprising the following steps:

[0027] Step S1: transporting the potted stator to be tested by a transport mechanism, transporting the potted stator to be tested to a transport mechanism, and placing the potted stator to be tested on a positioning fixture;

[0028] Step S2: transporting the potted stator to be inspected to the bottom of the inner diameter inspection mechanism by means of a transportation mechanism;

[0029] Step S3: The guide block is moved downward by the telescopic member 2, driving the driving rod to move downward, and after the driving rod moves downward, the pressing block is pressed downward, so that the positioning column is inserted into the positioning fixture;

[0030] Step S4: When the guide block moves downward, the detection rod is driven downward to detect the inner diameter of the stator of the circular magnetic core;

[0031] Step S5: The stator that passes the inspection is moved to the bottom of the performance inspection mechanism through the transportation mechanism, and the performance of the potted stator is inspected by the performance inspection mechanism.

[0032] The beneficial effects of the present invention are:

[0033] 1. In the present invention, the calibration cylinder is movably connected with the mounting seat and the standard shaft through the calibration column, and two sets of magnetic parts cooperate. When the standard shaft contacts the top of the stator, the standard shaft can be slightly tilted, which makes it convenient for the standard shaft to be inserted into the inner diameter hole of the stator, thereby improving the detection efficiency; in addition, the movably tilting of the standard shaft can effectively avoid the hard contact between the standard shaft and the stator, which can reduce the damage to the stator and also effectively avoid the breakage of the standard shaft;

[0034] 2. In the present invention, the plurality of magnets 1 and the plurality of magnets 2 improve the stability of the standard shaft when it is tilted, so that the standard shaft can be accurately inserted into the stator inner diameter hole, further improving the detection efficiency; in addition, after the standard shaft detects the stator inner diameter and moves upward, the plurality of magnets 1 and the plurality of magnets 2 cooperate with each other, and the gravity of the standard shaft itself, so that the standard shaft is automatically corrected to maintain a vertical state, which is convenient for subsequent detection work;

[0035] 3. In the present invention, when the mounting seat and the standard shaft are tilted, the correction column will also be tilted. During the correction process of the mounting seat and the standard shaft, the correction column is slowly brought back to the longitudinal center axis of the correction cylinder through the cooperation of the correction piece and the correction column, so that the correction column returns to its original position, and the mounting seat and the standard shaft return to the longitudinal center axis of the correction cylinder while being vertical, so that the mounting seat and the standard shaft are automatically corrected to be vertical, so that the standard shaft can be kept in place during each detection, which indirectly improves the detection efficiency;

[0036] 4. In the present invention, the guide block drives the driving rod downward when driving the detection rod downward. Before the detection rod contacts the stator, the driving rod presses the pressing block downward to move the pressing block downward, which will move the positioning column upward, so that the positioning column is inserted into the positioning fixture to fix the positioning fixture, thereby improving the concentricity between the standard shaft and the inner diameter hole of the stator, so that the standard shaft can be more conveniently inserted into the inner diameter hole of the stator, thereby improving the detection efficiency. With the arc notch at the bottom of the positioning fixture, the positioning column can be more conveniently and quickly inserted into the positioning fixture, thereby further improving the detection efficiency.

[0037] 5. In the present invention, the pressure plate is moved downward by a telescopic member to press the top of the motor housing on the potted stator to be tested. This, on the one hand, keeps the potted stator to be tested and the motor housing stable. When the detection rod is inserted into the stator inner diameter hole for testing, the detection efficiency is improved. On the other hand, the potted stator to be tested and the motor housing are kept in a vertical state, thereby improving the concentricity of the stator inner diameter hole and the standard shaft, further improving the detection efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0039] Figure 2 It is a schematic diagram of the structure of the transport mechanism and the inner diameter detection mechanism;

[0040] Figure 3 It is a schematic diagram of the structure of the inner diameter detection mechanism;

[0041] Figure 4 It is a schematic diagram of the partial structure of the transport mechanism;

[0042] Figure 5 Schematic diagram of the detection rod structure;

[0043] Figure 6 Schematic diagram of the cross-sectional structure of the detection rod;

[0044] Figure 7 It is a schematic diagram of the cross-section structure of the detection rod;

[0045] Figure 8 This is a schematic diagram of the structure after the correction tube and the mounting base are disassembled;

[0046] Fig. 9 This is a schematic diagram of the correction cylinder structure;

[0047] Fig.10 It is a schematic diagram of the structure of the retaining ring and the steel ball;

[0048] Fig.11 is a schematic diagram of the cross-sectional structure of the positioning member;

[0049] Fig.12 This is a schematic diagram of the cross-sectional structure of the positioning fixture.

[0050] In the figure:

[0051] 1. Handling mechanism; 2. Transport mechanism; 21. Screw module; 22. Slide; 23. Support plate; 24. Positioning fixture; 241. Arc notch; 25. Fixing plate; 26. Telescopic part 1; 27. Press plate; 3. Inner diameter detection mechanism; 31. Mounting frame; 311. Mounting plate; 312. Slide; 32. Telescopic part 2; 33. Guide block; 4. Performance detection mechanism; 5. Detection rod; 51. Guide cylinder; 511. Elastic part 1; 52. Connecting rod; 53. Correction body; 531. Adapter block; 53 2. Calibration cylinder; 54. Mounting seat; 55. Standard shaft; 56. Induction member; 57. Calibration column; 58. Calibration member; 581. Retaining ring; 582. Steel ball; 59. Magnetic member; 591. Magnet one; 592. Magnet two; 6. Positioning mechanism; 61. Driving rod; 62. Positioning member; 621. Positioning seat; 622. Down-pressing chamber; 623. Connecting channel; 624. Active chamber; 625. Down-pressing block; 626. Elastic member two; 627. Positioning column; 6271. Magnetic ring one; 628. Magnetic ring two. DETAILED DESCRIPTION

[0052] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0053] Example

[0054] like Figure 1-Figure 10 As shown, a stator potting detection device includes a transport mechanism 1 for transporting the potted stator to be detected, and the device also includes:

[0055] Transport mechanism 2: The transport mechanism 1 transports the potted stator to be tested to the transport mechanism 2;

[0056] An inner diameter detection mechanism 3, the inner diameter detection mechanism 3 is on the track of the transport mechanism 2;

[0057] A detection rod 5, which is mounted on the inner diameter detection mechanism 3. The detection rod 5 comprises a guide cylinder 51, a connecting rod 52 connected to the guide cylinder 51, a correction body 53 connected to the connecting rod 52, a mounting seat 54 movably connected to the correction body 53, and a standard shaft 55 connected to the mounting seat 54. The opposite surfaces of the correction body 53 and the mounting seat 54 are both provided with magnetic members 59;

[0058] The performance detection mechanism 4 is on the track of the transportation mechanism 2 .

[0059] In one case of this embodiment, the transport mechanism 1 is composed of a clamp and a device that drives the clamp to clamp the potted stator to be tested, and is used to transport the potted stator to be tested to the transportation mechanism 2; the outer diameter of the standard shaft 55 is adapted to the inner diameter of the stator, and the inner diameter of the stator is tested by inserting the standard shaft 55 into the inner diameter hole of the stator to detect whether it is qualified; the magnetism of the two groups of magnetic parts 59 can be the same or opposite, that is, the correction body 53 and the mounting seat 54 can be kept relatively parallel by the two groups of magnetic parts 59; the performance detection mechanism 4 includes power frequency withstand voltage test, insulation resistance test, turn-to-turn insulation test, inductance test, etc., which are used to detect whether the various performances of the potted stator are normal.

[0060] In actual application of this embodiment, the encapsulated stator to be tested is transported to the transport mechanism 2 by the transport mechanism 1, and the encapsulated stator to be tested is transported to the bottom of the inner diameter detection mechanism 3 by the transport mechanism 2, and then the detection rod 5 is moved down. If the standard shaft 55 can smoothly enter the inner diameter hole of the stator, it means that the inner diameter of the encapsulated stator is qualified. If the standard shaft 55 cannot be inserted into the inner diameter hole of the stator, it means that the inner diameter of the encapsulated stator is unqualified. Before the standard shaft 55 moves down to enter the inner diameter hole of the stator, if the concentricity of the standard shaft 55 and the inner diameter hole of the stator is low, when the standard shaft 55 contacts the top of the stator, it is movably connected by the correction body 53 and the mounting seat 54, and there are two sets of magnetic parts 59, so that the standard shaft 55 can be slightly tilted, which makes it convenient for the standard shaft 55 to be inserted into the inner diameter hole of the stator, thereby improving the detection efficiency.

[0061] In addition, making the standard shaft 55 movably tilted can effectively avoid hard contact between the standard shaft 55 and the stator, which can reduce damage to the stator and can also effectively avoid breakage of the standard shaft 55.

[0062] Furthermore, the correction body 53 includes an adapter block 531 and a correction cylinder 532, the adapter block 531 is fixedly sleeved on the top of the correction cylinder 532, the magnetic part 59 includes a magnet 1 591 and a magnet 2 592, a plurality of magnets 2 592 are installed on a side of the correction cylinder 532 close to the mounting seat 54, and a plurality of magnets 1 591 are installed on a side of the mounting seat 54 close to the correction cylinder 532, the number of magnets 1 591 and magnets 2 592 is the same, and a gap is reserved between the correction cylinder 532 and the mounting seat 54.

[0063] In one case of the present embodiment, the magnetism of the plurality of magnets one 591 and the plurality of magnets two 592 may be the same or opposite, that is, the plurality of magnets one 591 all have one magnetism, and the plurality of magnets two 592 all have the same or opposite magnetism. In this way, the plurality of magnets one 591 and the plurality of magnets two 592 are used to keep the correction cylinder 532 and the mounting seat 54 in a state of mutual repulsion or mutual attraction, that is, the correction cylinder 532 and the mounting seat 54 are kept in a parallel state; a gap is left between the correction cylinder 532 and the mounting seat 54 to provide space for the mounting seat 54 and the standard axis 55 to tilt.

[0064] In actual application of this embodiment, when the concentricity between the standard shaft 55 and the stator inner diameter hole is low, the standard shaft 55 first contacts the top of the stator, the standard shaft 55 slowly tilts, and finally is inserted into the stator inner diameter hole. During the tilting process of the standard shaft 55, the plurality of magnets 1 591 and the plurality of magnets 2 592 improve the stability of the standard shaft 55 when tilting, so that the standard shaft 55 can be accurately inserted into the stator inner diameter hole, further improving the detection efficiency; in addition, after the standard shaft 55 detects the stator inner diameter and moves upward, through the mutual cooperation of the plurality of magnets 1 591 and the plurality of magnets 2 592, as well as the gravity of the standard shaft 55 itself, the standard shaft 55 is automatically corrected to maintain a vertical state, which is convenient for subsequent detection work.

[0065] Furthermore, a correction column 57 is installed in the correction cylinder 532. The correction column 57 extends out of the correction cylinder 532 and is fixedly connected to the mounting seat 54. The correction column 57 is located in the correction cylinder 532. Two groups of correction parts 58 are symmetrically installed in the upper and lower parts. The correction parts 58 include a retaining ring 581 and a plurality of steel balls 582. The plurality of steel balls 582 are installed in the holes on the retaining ring 581. The steel balls 582 have space to move up and down in the holes on the retaining ring 581. The retaining ring 581 is sleeved on the correction column 57, and there is space for upward and downward movement between the upper retaining ring 581 and the adapter block 531.

[0066] In one case of this embodiment, the correction column 57 is movable in the correction cylinder 532, and when the mounting seat 54 and the standard shaft 55 are tilted, a tilting space is provided for the correction column 57; the steel ball 582 is movable up and down in the hole in the retaining ring 581, so that during the correction process of the standard shaft 55, the steel ball 582

[0067] When the present embodiment is actually applied, when the mounting seat 54 and the standard shaft 55 are tilted, the correction column 57 will also be tilted. At this time, the correction column 57 will drive the correction member 58 to move, causing the steel ball 582 to move upward and roll in the retaining ring 581; when the mounting seat 54 and the standard shaft 55 are tilted and moved upward, the mounting seat 54 and the standard shaft 55 slowly return to a vertical state. At this time, the correction column 57 slowly becomes vertical. During the process of the correction column 57 slowly returning to the vertical state, the steel ball 582 moves downward and rolls in the retaining ring 581, thereby slowly bringing the correction column 57 back to the longitudinal center axis of the correction cylinder 532, so that the correction column 57 returns to its original position, and the mounting seat 54 and the standard shaft 55 return to the longitudinal center axis of the correction cylinder 532 while being vertical, so that the mounting seat 54 and the standard shaft 55 are automatically corrected to be vertical, so that the standard shaft 55 can be kept in place during each detection, thus indirectly improving the detection efficiency.

[0068] Furthermore, the inner diameter detection mechanism 3 includes a mounting frame 31, a telescopic member 32 and a guide block 33. The mounting frame 31 is provided with a mounting plate 311, the mounting plate 311 is provided with a slide 312, the telescopic member 32 is installed on the top of the slide 312, the guide block 33 is slidably installed on the slide 312, the output end of the telescopic member 32 is connected to the guide block 33, the detection rod 5 passes through the guide block 33, the guide cylinder 51 is fixed on the guide block 33, and a positioning mechanism 6 is installed on the inner diameter detection mechanism 3.

[0069] In one case of this embodiment, the telescopic member 2 32 may be a pen cylinder, or other components that can drive the guide block 33 to move up and down.

[0070] In actual application of this embodiment, the guide block 33 is moved downward by the telescopic member 2 32, thereby driving the detection rod 5 to move downward into the stator inner diameter hole, and the standard shaft 55 is used to detect whether the stator inner diameter hole is qualified. After the detection is completed, the guide block 33 is driven by the telescopic member 2 32 to move the detection rod 5 back to its original position.

[0071] Furthermore, the transport mechanism 2 comprises:

[0072] Screw module 21;

[0073] A slide 22, which is movably mounted on the screw module 21;

[0074] A support plate 23, the support plate 23 is fixed on the slide 22;

[0075] The positioning fixture 24 is fixed on the support plate 23 , and a circular arc notch 241 is formed at the bottom of the positioning fixture 24 .

[0076] In one case of this embodiment, the screw module 21 and the slide 22 are both existing technologies, and this application does not improve them. Therefore, there is no need to disclose their specific mechanical structure and circuit structure, and it does not affect the integrity of this application; the stator to be tested after potting is placed on the positioning fixture 24, and the bottom of the stator rests on the positioning fixture 24.

[0077] In actual application of this embodiment, the encapsulated stator to be tested is transported by the transport mechanism 1, and the encapsulated stator to be tested is placed on the positioning fixture 24. Through the cooperation of the screw module 21 and the slide 22, the positioning fixture 24 is moved to the bottom of the inner diameter detection mechanism 3 or the bottom of the performance detection mechanism 4 to test the stator.

[0078] like Figure 3 , Fig.11 and Fig.12 As shown, the positioning mechanism 6 includes:

[0079] A driving rod 61, the driving rod 61 is fixed on the guide block 33 and is arranged longitudinally;

[0080] The positioning member 62 includes a positioning seat 621, which is fixed on the mounting frame 31. The positioning seat 621 is respectively provided with a longitudinal downward pressure chamber 622, a transverse connecting channel 623 and a longitudinal movable chamber 624. The downward pressure chamber 622 is connected with the movable chamber 624 through the connecting channel 623. The connecting channel 623 is located at the lowest point of the downward pressure chamber 622 and the movable chamber 624. A downward pressure block 625 is installed in the downward pressure chamber 622. The downward pressure block 625 extends through the positioning seat 621. An elastic member 626 is connected between the downward pressure block 625 and the bottom of the downward pressure chamber 622. When the driving rod 61 moves downward, the downward pressure block 625 will be squeezed to move downward. A positioning column 627 is movably installed in the movable chamber 624. The positioning column 627 is longitudinally coaxial with the standard shaft 55. When the positioning fixture 24 moves to the positioning seat 621, the positioning column 627 moves upward through the arc notch 241 and is inserted into the positioning fixture 24.

[0081] In one case of this embodiment, the second elastic member 626 can be a spring, or it can be a component that can return the lower pressure block 625 to its original position; wherein, the lower pressure block 625 is slidingly connected to the lower pressure chamber 622, and the lower pressure block 625 is tightly fitted with the inner wall of the lower pressure chamber 622, and the positioning column 627 is also tightly fitted with the inner wall of the active chamber 624, so that the lower pressure chamber 622, the connecting channel 623 and the active chamber 624 form an air cavity.

[0082] In actual application of this embodiment, when the positioning fixture 24 moves with the stator assembled in the motor housing to the bottom of the detection rod 5, the guide block 33 drives the detection rod 5 to move downward, and at the same time drives the driving rod 61 to move downward. Before the detection rod 5 contacts the stator, the driving rod 61 presses down the pressing block 625 to move the pressing block 625 downward, which will move the positioning column 627 upward, so that the positioning column 627 is inserted into the positioning fixture 24 to fix the positioning fixture 24 in position, and cooperates with the arc notch 241 at the bottom of the positioning fixture 24, so that the positioning column 627 can be inserted into the positioning fixture 24 more conveniently and quickly, thereby improving the detection efficiency. Since the positioning column 627 is longitudinally coaxial with the standard shaft 55, after the positioning column 627 is inserted into the positioning fixture 24, the positioning fixture 24 is longitudinally coaxial with the detection rod 5, thereby improving the concentricity of the standard shaft 55 and the inner diameter hole of the stator, thereby enabling the standard shaft 55 to be more conveniently inserted into the inner diameter hole of the stator, thereby improving the detection efficiency.

[0083] Furthermore, a magnetic ring 1 628 is disposed in the movable cavity 624 , and a magnetic ring 2 6271 is embedded and installed on the periphery of the positioning column 627 . The magnetic properties of the magnetic ring 1 628 and the magnetic ring 2 6271 are opposite.

[0084] In one case of this embodiment, the first magnetic ring 628 is embedded on the inner wall of the movable cavity 624, and the second magnetic ring 6271 is embedded on the periphery of the positioning column 627, so as to ensure that the positioning column 627 can move up and down.

[0085] When this embodiment is actually used, when the lower pressure block 625 moves downward, it squeezes the gas in the lower pressure chamber 622. Through the transmission of the connecting channel 623, the gas pushes the positioning column 627 in the active chamber 624 to move up and insert into the positioning fixture 24. When the driving rod 61 moves upward to release the restriction on the lower pressure block 625, the positioning column 627 moves downward due to its own gravity and squeezes the air through the rebound ability of the elastic member 2 626. In addition, the mutual attraction between the magnetic ring 1 628 and the magnetic ring 2 6271 causes the lower pressure block 625 to return to its original position, and the positioning column 627 also returns to its original position. The positioning column 627 is restricted by the magnetic ring 1 628 and the magnetic ring 2 6271, so that the positioning column 627 is prevented from always being in the active chamber 624 when the positioning fixture 24 does not need to be positioned, and the positioning column 627 is prevented from affecting the normal operation of the transportation mechanism 2.

[0086] like Figure 6 As shown, the connecting rod 52 passes through the guide cylinder 51, and a sensing member 56 is installed at one end of the connecting rod 52 extending out of the guide cylinder 51. The sensing member 56 abuts against the guide cylinder 51. A convex ring is provided on the periphery of the connecting rod 52, and an elastic member 511 is connected between the convex ring and the guide cylinder 51. The elastic member 511 is located on the periphery of the connecting rod 52.

[0087] In one case of this embodiment, the sensing member 56 is composed of a sensing block and a pressure sensor. The sensing block is connected to the connecting rod 52, and the pressure sensor is installed outside the guide cylinder 51. The pressure sensor detects the upward pressure of the sensing block to determine whether the inner diameter of the stator after potting to be detected is qualified. A pressure range is set for the pressure. If it is within the pressure range, it indicates that the inner diameter of the stator is qualified, and if it exceeds the pressure range, it indicates that the inner diameter of the stator is unqualified. The elastic member 511 can be a spring.

[0088] In actual application of this embodiment, the detection rod 5 moves downward to make the standard shaft 55 contact the stator. When the standard shaft 55 contacts the stator, the top of the connecting rod 52 drives the sensing block to move upward relative to the guide cylinder 51, and the upward pressure of the sensing block is detected by the pressure sensor. If the pressure is within the standard range, it means that the inner diameter of the stator after potting to be detected is qualified. If the pressure exceeds the standard range, it means that the inner diameter of the stator after potting to be detected is unqualified. After the detection rod 5 moves downward, the connecting rod 52 returns to its original position through the rebound ability of the elastic member 511.

[0089] like Figure 4 As shown, a fixing plate 25 is fixed on the support plate 23, a telescopic member 26 is installed on the fixing plate 25, a pressing plate 27 is installed on the output end of the telescopic member 26, when the pressing plate 27 moves downward, it abuts against the motor housing with the circular magnetic core stator, and a notch is opened on the pressing plate 27, so that the circular magnetic core stator is exposed to the outside.

[0090] In one case of this embodiment, the telescopic member 26 may be a finger cylinder, or a member capable of driving the pressing plate 27 to move up and down.

[0091] In actual application of this embodiment, after the potted stator to be tested is placed on the positioning fixture 24, the pressure plate 27 is moved down by the telescopic member 26 to press the top of the motor housing on the potted stator to be tested. In this way, on the one hand, the potted stator to be tested and the motor housing are kept stable. When the detection rod 5 is moved down for detection, the detection rod 5 can be inserted into the stator inner diameter hole more smoothly, thereby improving the detection efficiency. On the other hand, the potted stator to be tested and the motor housing are kept in a vertical state, thereby improving the concentricity of the stator inner diameter hole and the standard shaft 55, further improving the detection efficiency.

[0092] A method for using a stator potting detection device, the method is applied to the stator potting detection device as described above, and the method comprises the following steps:

[0093] Step S1: The potted stator to be tested is transported by the transport mechanism 1 to the transport mechanism 2, so that the potted stator to be tested is placed on the positioning fixture 24;

[0094] Step S2: transporting the potted stator to be inspected to the bottom of the inner diameter inspection mechanism 3 through the transportation mechanism 2;

[0095] Step S3: The guide block 33 is moved downward by the telescopic member 32, driving the driving rod 61 to move downward. After the driving rod 61 moves downward, the pressing block 625 is pressed downward, so that the positioning column 627 is inserted into the positioning fixture 24;

[0096] Step S4: When the guide block 33 moves downward, the detection rod 5 is driven downward to detect the inner diameter of the stator of the circular magnetic core;

[0097] Step S5: the stator that has passed the inspection is moved to the bottom of the performance inspection mechanism 4 through the transportation mechanism 2, and the performance of the potted stator is inspected by the performance inspection mechanism 4.

[0098] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. A testing device for a potted stator, comprising a transport mechanism (1) for transporting a potted stator to be tested, characterized in that: The device also includes: A transport mechanism (2), wherein the transport mechanism (1) transports the potted stator to be tested to the transport mechanism (2); An inner diameter detection mechanism (3), wherein the inner diameter detection mechanism (3) is on the track of the transport mechanism (2); A detection rod (5), the detection rod (5) being mounted on the inner diameter detection mechanism (3), the detection rod (5) comprising a guide cylinder (51), a connecting rod (52) connected to the guide cylinder (51), a correction body (53) connected to the connecting rod (52), a mounting seat (54) movably connected to the correction body (53), and a standard shaft (55) connected to the mounting seat (54), and magnetic parts (59) are provided on the opposite surfaces of the correction body (53) and the mounting seat (54); A performance detection mechanism (4), wherein the performance detection mechanism (4) is on the track of the transportation mechanism (2).

2. The detection device after stator potting according to claim 1 is characterized in that: The correction body (53) comprises an adapter block (531) and a correction cylinder (532), the adapter block (531) being fixedly sleeved on the top of the correction cylinder (532), the magnetic member (59) comprising a first magnet (591) and a second magnet (592), a plurality of second magnets (592) being mounted on one side of the correction cylinder (532) close to the mounting seat (54), a plurality of first magnets (591) being mounted on one side of the mounting seat (54) close to the correction cylinder (532), the number of the first magnets (591) and the number of the second magnets (592) being the same, and a gap being reserved between the correction cylinder (532) and the mounting seat (54).

3. The detection device after stator potting according to claim 2 is characterized in that: A correction column (57) is installed in the correction cylinder (532). The correction column (57) extends out of the correction cylinder (532) and is fixedly connected to the mounting seat (54). The correction column (57) is located in the correction cylinder (532). Two groups of correction pieces (58) are symmetrically installed in the upper and lower parts. The correction pieces (58) include a retaining ring (581) and a plurality of steel balls (582). The plurality of steel balls (582) are installed in holes on the retaining ring (581). The steel balls (582) have space for upward and downward movement in the holes on the retaining ring (581). The retaining ring (581) is sleeved on the correction column (57), wherein there is space for upward and downward movement between the upper retaining ring (581) and the adapter block (531).

4. The detection device after stator potting according to claim 1 is characterized in that: The inner diameter detection mechanism (3) comprises a mounting frame (31), a telescopic member 2 (32) and a guide block (33); the mounting frame (31) is provided with a mounting plate (311); the mounting plate (311) is provided with a slide seat (312); the telescopic member 2 (32) is mounted on the top of the slide seat (312); a guide block (33) is slidably mounted on the slide seat (312); an output end of the telescopic member 2 (32) is connected to the guide block (33); the detection rod (5) passes through the guide block (33); the guide cylinder (51) is fixed on the guide block (33); and a positioning mechanism (6) is installed on the inner diameter detection mechanism (3).

5. The detection device after stator potting according to claim 4 is characterized in that: The transport mechanism (2) comprises: Screw module (21); A slide (22), wherein the slide (22) is movably mounted on the screw module (21); A support plate (23), wherein the support plate (23) is fixed on the slide table (22); A positioning jig (24) is fixed on the support plate (23), and a circular arc notch (241) is provided at the bottom of the positioning jig (24).

6. The detection device after stator potting according to claim 5, characterized in that: The positioning mechanism (6) comprises: A driving rod (61), wherein the driving rod (61) is fixed on the guide block (33) and is arranged longitudinally; The positioning member (62) includes a positioning seat (621), the positioning seat (621) is fixed on the mounting frame (31), and the positioning seat (621) is respectively provided with a longitudinal downward pressure chamber (622), a transverse connecting channel (623) and a longitudinal movable chamber (624), the downward pressure chamber (622) is connected with the movable chamber (624) through the connecting channel (623), the connecting channel (623) is located at the lowest point of the downward pressure chamber (622) and the movable chamber (624), and a downward pressure block (625) is installed in the downward pressure chamber (622). ), the lower pressing block (625) extends through the positioning seat (621), and an elastic member 2 (626) is connected between the lower pressing block (625) and the bottom of the lower pressing chamber (622). When the driving rod (61) moves downward, it squeezes the lower pressing block (625) to move downward. A positioning column (627) is installed in the movable sleeve in the movable chamber (624). The positioning column (627) is longitudinally coaxial with the standard axis (55). When the positioning fixture (24) moves to the positioning seat (621), the positioning column (627) moves upward through the arc notch (241) and is inserted into the positioning fixture (24).

7. The detection device after stator potting according to claim 6, characterized in that: A magnetic ring 1 (628) is arranged in the movable cavity (624), and a magnetic ring 2 (6271) is embedded and installed on the periphery of the positioning column (627), and the magnetic properties of the magnetic ring 1 (628) and the magnetic ring 2 (6271) are opposite.

8. The detection device after stator potting according to claim 1 is characterized in that: The connecting rod (52) passes through the guide cylinder (51); an end of the connecting rod (52) extending out of the guide cylinder (51) is provided with a sensing member (56); the sensing member (56) abuts against the guide cylinder (51); a convex ring is provided on the periphery of the connecting rod (52); an elastic member 1 (511) is connected between the convex ring and the guide cylinder (51); and the elastic member 1 (511) is located on the periphery of the connecting rod (52).

9. The detection device after stator potting according to claim 5, characterized in that: A fixing plate (25) is fixed on the support plate (23), a telescopic member (26) is installed on the fixing plate (25), a pressing plate (27) is installed at the output end of the telescopic member (26), and when the pressing plate (27) moves downward, it abuts against the motor housing equipped with the circular magnetic core stator, and a notch is provided on the pressing plate (27), so that the circular magnetic core stator is exposed to the outside.

10. A method for using a detection device after stator potting, characterized in that: The method is applied to a stator potting detection device as described in any one of claims 1 to 9 above, and the method comprises the following steps: Step S1: The potted stator to be tested is transported by the transport mechanism (1) to the transport mechanism (2), so that the potted stator to be tested is placed on the positioning fixture (24); Step S2: transporting the potted stator to be inspected to the bottom of the inner diameter inspection mechanism (3) through the transport mechanism (2); Step S3: The guide block (33) is moved downward by the telescopic member 2 (32), driving the driving rod (61) to move downward. After the driving rod (61) moves downward, the pressing block (625) is pressed downward, so that the positioning column (627) is inserted into the positioning fixture (24); Step S4: When the guide block (33) moves downward, the detection rod (5) is driven downward to detect the inner diameter of the stator of the circular magnetic core; Step S5: The stator that passes the test is moved to the bottom of the performance testing mechanism (4) through the transport mechanism (2), and the performance of the potted stator is tested by the performance testing mechanism (4).

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