Filling and sealing tool for stator winding iron core

Abstract

A stator winding iron core potting tool comprises a base, an exhaust ring, a central column, a positioning core, an outer ring, a height limiting cover and a pressing plate. The utility model designs the potting tool for the stator winding iron core, which can meet the requirements of manual glue pouring and mechanical automatic glue pouring, is simple in design, and is designed based on the structures of most stator winding iron cores, so that the structure of the potting tool can meet the potting of most stator winding iron cores. According to the utility model, encapsulation is carried out on the stator winding iron core, the application range is wider, the encapsulation is basically not influenced by the casing structure, and the encapsulation is directly carried out on the stator winding iron core, so that the installation sequence of other parts is not influenced, and the requirements on design and process are relatively lower. The stator winding iron core is simple in structure and suitable for a common stator winding iron core structure; the filling and sealing device is convenient to use, and can meet the requirements of manual filling and sealing and automatic filling and sealing of equipment; the utility model can be repeatedly used for many times.

Description

Technical Field

[0001] This utility model relates to the field of motor potting technology, specifically to a stator winding core potting tool. Background Technology

[0002] With the continuous advancement and development of motor technology, users have placed higher demands on the stability and reliability of motor performance. As one of the core components of a motor, the stator winding's insulation performance and heat dissipation directly affect the overall operating efficiency and lifespan of the motor. Stator winding core potting offers several advantages: it improves the motor's withstand voltage and insulation strength, prevents current leakage, provides leakage protection, prevents moisture and impurities from entering the motor, extends its service life, and the potting material's thermal conductivity transfers heat from the motor's interior to the outer casing, reducing heat generation while maintaining good heat and oil resistance. After potting, the overall mechanical strength of the stator is enhanced, meeting the motor's mechanical requirements. Furthermore, potting fills internal gaps and cracks, reducing internal vibration and noise, improving the motor's operational stability, enhancing its moisture and corrosion resistance, and adapting to different working environments. The potting process also allows for mass production, improving production efficiency. These advantages make stator potting a crucial process in motor manufacturing. A critical aspect of the stator potting process is the design of the potting mold, which directly impacts the success or failure of the potting process.

[0003] The most common motor potting process in the industry is to press the stator winding core into the housing to form the stator, and then install the potting mold on the stator for potting. This method has certain requirements for the structural design of the motor. The needs of the potting process must be fully considered in the structural design stage, and the installation sequence of the internal components of the motor and the structure of the housing must be adjusted to ensure the sealing of the potting and the ease of installation of the tooling. Utility Model Content

[0004] The purpose of this utility model is to provide a stator winding core potting fixture, including: a base, an exhaust ring, a center column, a positioning core, an outer ring, a height limiting cover, and a pressure plate.

[0005] The base has a stepped groove on its top surface and a groove I on its bottom surface, and the stepped groove and the groove I are connected by a through hole I.

[0006] The inner and outer walls of the exhaust ring are both provided with V-shaped grooves.

[0007] The central column is a columnar structure with a baffle at the bottom.

[0008] The top of the central column is provided with a fastening structure that engages with a nut.

[0009] The positioning core is a cylindrical structure, and a through hole II is provided at its center along the axis.

[0010] The outer diameter of the positioning core matches the inner diameter of the stator winding core.

[0011] The top of the positioning core is provided with an inwardly inclined guide structure, and the bottom is provided with an outwardly inclined demolding structure.

[0012] The outer ring has a positioning groove at its bottom center.

[0013] The outer ring has a demolding groove inside and a height limit cover mounting groove at the top. The demolding groove and the height limit cover mounting groove have opposite inclinations, forming a V-shaped protrusion on the inner wall of the outer ring.

[0014] The positioning groove, demolding groove, and height-limiting cover mounting groove are connected.

[0015] The height-limiting cover is a cylindrical structure with a base at the bottom.

[0016] The top surface of the height-limiting cover has a groove II at its center, and a number of cable outlet holes and vent holes are evenly arranged around the groove II.

[0017] The outlet holes and exhaust holes are spaced apart.

[0018] The bottom of the groove II is provided with a through hole III.

[0019] The pressure plate has a cross-shaped structure, and a through hole IV is provided at the center along the vertical line of the cross-shaped structure.

[0020] The outer diameter of the cross-shaped structure of the pressure plate is larger than the outer diameter of the outer ring.

[0021] The central post is inserted into the through hole I of the base, and the baffle of the central post is located in the groove I of the base.

[0022] The central post is inserted into the through hole II of the positioning core.

[0023] After the venting ring is fitted onto the demolding structure of the positioning core, it is inserted into the stepped groove of the base.

[0024] The stator winding core is fitted onto the outer diameter of the positioning core, and its bottom is inserted into the stepped groove of the base.

[0025] The top of the stator winding core abuts against the positioning groove of the outer ring.

[0026] The guide structure of the positioning core is inserted into the groove II of the height limiting cover, and the height limiting cover is located in the height limiting cover mounting groove of the outer ring.

[0027] The fastening structure of the central column passes through the through hole III of the height limit cover and the through hole IV of the pressure plate in sequence, and is then fixed by a nut.

[0028] Furthermore, the outer wall of the base is provided with an extension structure.

[0029] Furthermore, the stepped groove of the base is chamfered.

[0030] Furthermore, the positioning groove of the outer ring is chamfered.

[0031] Furthermore, the stepped groove of the base has a certain slope.

[0032] Furthermore, the positioning core is made of polytetrafluoroethylene rod.

[0033] The positioning core expands after heating and fills the inner hole of the stator winding core.

[0034] Furthermore, the base, exhaust ring, central column, outer ring, height limit cover, and pressure plate are all made of aluminum alloy.

[0035] The technical effect of this utility model is beyond doubt. This utility model designs a potting fixture for stator winding cores, which can meet both manual and automatic potting requirements. Its design is simple and is based on the structure of most stator winding cores. Therefore, its structure can meet the potting requirements of most stator winding cores.

[0036] This invention is based on potting on the stator winding core, which has a wider range of applications and is basically unaffected by the housing structure. Because it pots directly on the stator winding core, it will not affect the installation sequence of other components, and the requirements for design and process are relatively lower.

[0037] This invention has a simple structure and is suitable for common stator winding core structures; it is easy to use and can meet both manual and automatic potting requirements; it can be reused multiple times. Attached Figure Description

[0038] Figure 1 A schematic diagram of a stator winding core potting fixture;

[0039] Figure 2 This is a schematic diagram of the base; Figure 2 (a) is a sectional view of the base; Figure 2 (b) is a top view of the base;

[0040] Figure 3 This is a schematic diagram of the exhaust ring cross-section;

[0041] Figure 4 This is a schematic diagram of the central column; Figure 4 (a) is the right view of the center column; Figure 4 (b) is the front view of the center column;

[0042] Figure 5This is a schematic diagram of the positioning core; Figure 5 (a) is the right view of the positioning core; Figure 5 (b) is a front view of the positioning core;

[0043] Figure 6 This is a schematic diagram of the outer ring.

[0044] Figure 7 This is a schematic diagram of a height-restricted cover. Figure 7 (a) is a sectional view of the height-limiting cover; Figure 7 (b) is a top view of the height-limiting cover;

[0045] Figure 8 This is a schematic diagram of the pressure plate;

[0046] In the figure, there are: base 1, stepped groove 101, groove I 102, through hole I 103, extension structure 104, exhaust ring 2, center column 3, baffle 301, fastening structure 302, positioning core 4, through hole II 401, guide structure 402, demolding structure 403, outer ring 5, positioning groove 501, demolding groove 502, height limit cover mounting groove 503, height limit cover 6, chassis 601, groove II 602, through hole III 603, cable outlet hole 604, exhaust hole 605, pressure plate 7, through hole IV 701, and stator winding core 8. Detailed Implementation

[0047] The present invention will be further described below with reference to embodiments, but it should not be construed as the scope of the present invention being limited to the following embodiments. Various substitutions and modifications made based on ordinary technical knowledge and conventional methods in the art without departing from the above-described technical concept of the present invention should be included within the protection scope of the present invention.

[0048] Example 1:

[0049] See Figures 1 to 8 A stator winding core potting fixture includes: a base 1, an exhaust ring 2, a center column 3, a positioning core 4, an outer ring 5, a height limiting cover 6, and a pressure plate 7.

[0050] The top surface of the base 1 is provided with a stepped groove 101, and the bottom surface is provided with a groove I102. The stepped groove 101 and the groove I102 are connected through a through hole I103.

[0051] The inner and outer walls of the exhaust ring 2 are both provided with V-shaped grooves.

[0052] The central column 3 is a column structure and has a baffle 301 at the bottom.

[0053] The top of the central column 3 is provided with a fastening structure 302 that cooperates with the nut.

[0054] The positioning core 4 is a cylindrical structure, and a through hole II401 is provided at the center along the axis.

[0055] The outer diameter of the positioning core 4 matches the inner diameter of the stator winding core 8.

[0056] The positioning core 4 has an inwardly inclined guide structure 402 at the top and an outwardly inclined demolding structure 403 at the bottom.

[0057] The outer ring 5 has a positioning groove 501 at its bottom center.

[0058] The outer ring 5 has a demolding groove 502 inside and a height limit cover mounting groove 503 on top. The demolding groove 502 and the height limit cover mounting groove 503 have opposite inclinations, forming a V-shaped protrusion on the inner wall of the outer ring 5.

[0059] The positioning groove 501, the demolding groove 502, and the height limit cover mounting groove 503 are connected.

[0060] The height-limiting cover 6 is a columnar structure, and a base 601 is provided at the bottom.

[0061] The top surface of the height-limiting cover 6 has a groove II602 at its center, and a plurality of cable outlet holes 604 and exhaust holes 605 are evenly arranged around the groove II602.

[0062] The outlet hole 604 and the vent hole 605 are distributed at intervals.

[0063] The bottom of the groove II602 is provided with a through hole III603.

[0064] The pressure plate 7 has a cross-shaped structure, and a through hole IV701 is provided at the center along the vertical line of the cross-shaped structure.

[0065] The outer diameter of the cross-shaped structure of the pressure plate 7 is larger than the outer diameter of the outer ring 5.

[0066] The central post 3 is inserted into the through hole I103 of the base 1, and the baffle 301 of the central post 3 is located in the groove I102 of the base 1.

[0067] The central post 3 is inserted into the through hole II401 of the positioning core 4.

[0068] After the demolding structure 403 of the positioning core 4 is fitted with the venting ring 2, it is inserted into the stepped groove 101 of the base 1.

[0069] The stator winding core 8 is fitted on the outer diameter of the positioning core 4, and its bottom is inserted into the stepped groove 101 of the base 1.

[0070] The top of the stator winding core 8 abuts against the positioning groove 501 of the outer ring 5.

[0071] The guide structure 402 of the positioning core 4 is inserted into the groove II602 of the height limiting cover 6, and the height limiting cover 6 is located in the height limiting cover mounting groove 503 of the outer ring 5.

[0072] The fastening structure 302 of the central column 3 passes through the through hole III603 of the height limiting cover 6 and the through hole IV701 of the pressure plate 7 in sequence, and is then fixed by a nut.

[0073] Example 2:

[0074] A stator winding core potting fixture, the main technical contents of which are described in Embodiment 1, further wherein the outer wall of the base 1 is provided with an extension structure 104.

[0075] Example 3:

[0076] A stator winding core potting fixture, the main technical contents of which are described in any one of Embodiments 1 to 2, further wherein the stepped groove 101 of the base 1 is provided with a chamfer.

[0077] Example 4:

[0078] A stator winding core potting fixture, the main technical contents of which are described in any one of embodiments 1 to 3, further wherein the positioning groove 501 of the outer ring 5 is chamfered.

[0079] Example 5:

[0080] A stator winding core potting fixture, the main technical contents of which are described in any one of embodiments 1 to 4, further wherein the stepped groove 101 of the base 1 has a certain slope.

[0081] Example 6:

[0082] A stator winding core potting fixture, the main technical contents of which are described in any one of Embodiments 1 to 5, further wherein the positioning core 4 is made of polytetrafluoroethylene rod.

[0083] The positioning core 4 expands after heating and fills the inner hole of the stator winding core 8.

[0084] Example 7:

[0085] A stator winding core potting fixture, the main technical contents of which are described in any one of embodiments 1 to 6, further wherein the base 1, exhaust ring 2, center column 3, outer ring 5, height limit cover 6, and pressure plate 7 are all made of aluminum alloy.

[0086] Example 8:

[0087] See Figures 1 to 8 A stator winding core potting fixture includes: a base 1, an exhaust ring 2, a center column 3, a positioning core 4, an outer ring 5, a height limiting cover 6, and a pressure plate 7.

[0088] The top surface of the base 1 is provided with a stepped groove 101, and the bottom surface is provided with a groove I102. The stepped groove 101 and the groove I102 are connected through a through hole I103.

[0089] The inner and outer walls of the exhaust ring 2 are both provided with V-shaped grooves.

[0090] The central column 3 is a column structure and has a baffle 301 at the bottom.

[0091] The top of the central column 3 is provided with a fastening structure 302 that cooperates with the nut.

[0092] The positioning core 4 is a cylindrical structure, and a through hole II401 is provided at the center along the axis.

[0093] The outer diameter of the positioning core 4 matches the inner diameter of the stator winding core 8.

[0094] The positioning core 4 has an inwardly inclined guide structure 402 at the top and an outwardly inclined demolding structure 403 at the bottom.

[0095] The outer ring 5 has a positioning groove 501 at its bottom center.

[0096] The outer ring 5 has a demolding groove 502 inside and a height limit cover mounting groove 503 on top. The demolding groove 502 and the height limit cover mounting groove 503 have opposite inclinations, forming a V-shaped protrusion on the inner wall of the outer ring 5.

[0097] The positioning groove 501, the demolding groove 502, and the height limit cover mounting groove 503 are connected.

[0098] The height-limiting cover 6 is a columnar structure, and a base 601 is provided at the bottom.

[0099] The top surface of the height-limiting cover 6 has a groove II602 at its center, and a plurality of cable outlet holes 604 and exhaust holes 605 are evenly arranged around the groove II602.

[0100] The outlet hole 604 and the vent hole 605 are distributed at intervals.

[0101] The bottom of the groove II602 is provided with a through hole III603.

[0102] The pressure plate 7 has a cross-shaped structure, and a through hole IV701 is provided at the center along the vertical line of the cross-shaped structure.

[0103] The outer diameter of the cross-shaped structure of the pressure plate 7 is larger than the outer diameter of the outer ring 5.

[0104] The central post 3 is inserted into the through hole I103 of the base 1, and the baffle 301 of the central post 3 is located in the groove I102 of the base 1.

[0105] The central post 3 is inserted into the through hole II401 of the positioning core 4.

[0106] After the demolding structure 403 of the positioning core 4 is fitted with the venting ring 2, it is inserted into the stepped groove 101 of the base 1.

[0107] The stator winding core 8 is fitted on the outer diameter of the positioning core 4, and its bottom is inserted into the stepped groove 101 of the base 1.

[0108] The top of the stator winding core 8 abuts against the positioning groove 501 of the outer ring 5.

[0109] The guide structure 402 of the positioning core 4 is inserted into the groove II602 of the height limiting cover 6, and the height limiting cover 6 is located in the height limiting cover mounting groove 503 of the outer ring 5.

[0110] The fastening structure 302 of the central column 3 passes through the through hole III603 of the height limiting cover 6 and the through hole IV701 of the pressure plate 7 in sequence, and is then fixed by a nut.

[0111] Example 9:

[0112] A stator winding core potting fixture, the main technical contents of which are described in Embodiment 8, further wherein the outer wall of the base 1 is provided with an extension structure 104 for demolding.

[0113] Example 10:

[0114] A stator winding core potting fixture, the main technical contents of which are described in any one of embodiments 8 to 9, further wherein the stepped groove 101 of the base 1 is chamfered for positioning and sealing the stator winding core 8.

[0115] Example 11:

[0116] A stator winding core potting fixture, the main technical contents of which are described in any one of embodiments 8 to 10, further wherein the positioning groove 501 of the outer ring 5 is chamfered for positioning and sealing the stator winding core 8.

[0117] Example 12:

[0118] A stator winding core potting fixture, the main technical contents of which are described in any one of embodiments 8 to 11, further wherein the stepped groove 101 of the base 1 has a certain slope for demolding after potting.

[0119] Example 13:

[0120] A stator winding core potting fixture, the main technical contents of which are described in any one of Embodiments 8 to 12, further wherein the positioning core 4 is made of polytetrafluoroethylene rod.

[0121] The positioning core 4 expands after heating and fills the inner hole of the stator winding core 8.

[0122] Example 14:

[0123] A stator winding core potting fixture, the main technical contents of which are described in any one of embodiments 8 to 13, further wherein the base 1, exhaust ring 2, center column 3, outer ring 5, height limit cover 6, and pressure plate 7 are all made of aluminum alloy.

[0124] Example 15:

[0125] The method for filling using the filling tooling described in any one of Examples 8-14 includes the following steps:

[0126] 1) Install the base, exhaust ring, center column, and positioning core. Install the stator winding core onto the outer diameter of the positioning core and fix it with the outer ring and pressure plate.

[0127] 2) Use sealant to seal the positioning groove of the outer ring and the stepped groove of the base.

[0128] 3) Place the sealed potting fixture into an oven and heat it to 60°C for 1 hour.

[0129] 4) Remove the pressure plate and pot the stator winding core.

[0130] 5) Pass the lead wire through the outlet hole of the height limit cover, and install the height limit cover and pressure plate onto the potting fixture after potting.

[0131] 6) Place the potting fixture horizontally into the oven for heating and curing, and remove the stator winding core after cooling.

[0132] 7) Remove the sealant and flash from the removed stator winding core to obtain the potted stator winding core.

[0133] Use an electrician's knife to remove the sealant from the outer circumference of the stator winding core, and then remove the hexagonal nut, pressure plate, height limit cover and other components in sequence. Use flat-angle pliers to cut off the burrs and excess sealant.

[0134] Example 16:

[0135] A method for potting a stator winding core, the main technical contents of which are described in Example 15, further wherein the sealant includes silicone rubber sealant.

[0136] The potting adhesive includes epoxy resin.

[0137] Example 17:

[0138] A method for potting stator winding cores, the main technical contents of which are described in any one of Embodiments 15 to 16, further wherein the method for potting stator winding cores includes manual potting and automatic potting by equipment.

[0139] Manual potting: Weigh the epoxy resin according to the calculated amount needed and place it in a vacuum chamber for degassing. Remove the heated stator winding core and epoxy resin, and slowly pour the epoxy resin onto the coil from the top of the stator winding core until all the resin is poured. Place the potted stator winding core back into the vacuum chamber for vacuuming, and then remove it. Automatic potting: Set the dispensing rate according to the calculated amount of epoxy resin needed, and start the equipment for vacuum degassing. Place the heated stator winding core into the vacuum potting equipment, start the equipment for vacuum potting, and then remove it and place it horizontally.

[0140] Example 18:

[0141] See Figures 1 to 8 A stator winding core potting tool, the main technical contents of which include:

[0142] A stator winding core potting fixture includes a base, an exhaust ring, a center column, a positioning core, an outer ring, a height limiting cap, a pressure plate, and a hexagonal nut, and includes a method for using the potting fixture.

[0143] The stator winding core potting fixture is as follows:

[0144] The base has four steps inside. The outermost step, only 1mm high and chamfered, is used for positioning the outer circle of the stator winding core, and the chamfered part also serves as a sealant groove during external sealing. The second step has a certain slope to facilitate demolding after potting. The third step is used for installing the venting ring. The fourth step is used for installing the positioning core. In addition, the center of the base has a through hole for installing the center post. The inner and outer cylindrical surfaces of the venting ring have V-grooves to facilitate venting during potting and can also be used as an overflow groove. The center post is the component connecting the potting fixture and the stator winding core. Its upper end is threaded, and when used with a hexagonal nut, it can clamp the potting fixture and the stator winding core together. The positioning core is divided into four sections, numbered one to four from top to bottom. The first section is a frustum with a certain slope, its large end being roughly the same as the inner diameter of the stator winding core, used for guidance during installation. The second section is a cylinder with a diameter roughly the same as the inner circle of the stator winding core. The third section is also a frustum with a certain slope, its small end being roughly the same as the inner diameter of the stator winding core, facilitating demolding after potting. The fourth section is a cylinder with a diameter the same as the large end of the third section, and its axial part has a through hole for installing the center column. The positioning core is made of polytetrafluoroethylene (PTFE) rod, whose coefficient of thermal expansion is greater than that of silicon steel sheets. During heating, the positioning core expands to fill the inner hole of the stator winding core. The outer ring cavity has three steps. The outermost step is the same as the base, only 1mm high and chamfered, used for positioning the outer circle of the stator winding core. The chamfered part can also serve as a groove for the sealant during external sealing. The second step has a certain slope, facilitating demolding after potting. The third step has the opposite slope to the second step. The height limit cover has a circular base with a circular tube structure machined onto it. After installation, the circular tube structure, the third step of the outer ring, and the first section of the positioning core form a V-shaped groove on both the inner and outer rings. Because there is a small gap at the bottom of the V-shaped groove, excess potting compound is squeezed into this groove after the height limit cover is installed. Since this gap is very small, the cured compound is very thin. During demolding, slight force causes the excess potting compound to break at the bottom of the V-shaped groove and be easily removed. Furthermore, the circular tube portion of the height limit cover has through holes machined axially for lead wires to pass through, and also features evenly distributed vent holes to further enhance venting. The center of the circular base also has a through hole for the center post to pass through. The pressure plate has a cross-shaped structure with a through hole at the center for the center post to pass through, used to press the outer ring, height limit cover, and positioning core together. After all components are installed, hexagonal nuts and the center post are used to press the fixture against the stator winding core.

[0145] The stator winding core potting method is as follows:

[0146] 1) Install the base, center column, exhaust ring, and positioning core. Then install the stator winding core (lead wires facing upwards) onto the fixture. Next, install the outer ring onto the stator winding core lead wire end, install the pressure plate, and tighten it with a hexagonal nut.

[0147] 2) Apply silicone rubber sealant to the contact area between the outer circle of the stator winding core and the tooling to seal it. Allow it to cure at room temperature or by heating at low temperature.

[0148] 3) Place the stator winding core that has completed steps 1)-2) into an oven along with the tooling and heat it to 60°C for 1 hour;

[0149] 4) Manual potting: Weigh the epoxy resin according to the calculated amount used and place it in a vacuum chamber for degassing. Remove the heated stator winding core and epoxy resin, and slowly pour the epoxy resin onto the coil from the top of the stator winding core until all the resin is poured. Place the potted stator winding core back into the vacuum chamber for vacuuming, and then remove it. 5) Automatic potting: Set the dispensing rate according to the calculated amount of epoxy resin used, and start the equipment for vacuum degassing. Place the heated stator winding core into the vacuum potting equipment, start the equipment for vacuum potting, and then remove it and place it horizontally.

[0150] 5) Remove the hexagonal nut and pressure plate, pass the lead wire through the height limit cover, and install the height limit cover onto the stator winding core that has been potted. Then reinstall and tighten the hexagonal nut and pressure plate.

[0151] 6) Place the stator winding core that has completed the above steps horizontally into an oven for heating and curing, and remove it after it cools down in the oven.

[0152] 7) Use an electrician's knife to remove the sealant from the outer circle of the stator winding core, and then remove the hexagonal nut, pressure plate, height limit cover and other parts in sequence. Use flat-angle pliers to cut off the burrs and excess sealant.

[0153] At this point, the stator winding core is fully encapsulated. The encapsulation fixture is made of aluminum alloy with a high degree of smoothness. The epoxy resin does not adhere strongly to it, and the adhesive can be easily removed from the fixture using tools such as an electrician's knife, without affecting the next use.

Claims

1. A stator winding core potting fixture, characterized in that, include: Base (1), exhaust ring (2), center column (3), positioning core (4), outer ring (5), height limit cover (6), pressure plate (7); The base (1) has a stepped groove (101) on its top surface and a groove I (102) on its bottom surface, and the stepped groove (101) and the groove I (102) are connected by a through hole I (103). The inner and outer walls of the exhaust ring (2) are provided with V-shaped grooves; The central column (3) is a column structure and has a baffle (301) at the bottom; The top of the central column (3) is provided with a fastening structure (302) that cooperates with the nut; The positioning core (4) is a cylindrical structure, and a through hole II (401) is provided at the center along the axis; The outer diameter of the positioning core (4) matches the inner diameter of the stator winding core (8); The top of the positioning core (4) is provided with an inwardly inclined guide structure (402), and the bottom is provided with an outwardly inclined demolding structure (403). The outer ring (5) has a positioning groove (501) at the bottom center; The outer ring (5) has a demolding groove (502) inside and a height limit cover mounting groove (503) on top. The demolding groove (502) and the height limit cover mounting groove (503) have opposite inclinations, forming a V-shaped protrusion on the inner wall of the outer ring (5). The positioning groove (501), the demolding groove (502), and the height-limiting cover mounting groove (503) are connected; The height-limiting cover (6) is a columnar structure and has a base (601) at the bottom; The top surface of the height limiting cover (6) is provided with a groove II (602) at the center, and a plurality of wire outlet holes (604) and exhaust holes (605) are evenly surrounded around the groove II (602). The outlet hole (604) and the vent hole (605) are spaced apart; The bottom of the groove II (602) is provided with a through hole III (603); The pressure plate (7) has a cross-shaped structure, and a through hole IV (701) is provided at the center along the vertical line of the cross-shaped structure; The outer diameter of the cross-shaped structure of the pressure plate (7) is larger than the outer diameter of the outer ring (5); The central column (3) is inserted into the through hole I (103) of the base (1), and the baffle (301) of the central column (3) is located in the groove I (102) of the base (1); The central post (3) is inserted into the through hole II (401) of the positioning core (4); After the demolding structure (403) of the positioning core (4) is fitted with the venting ring (2), it is inserted into the stepped groove (101) of the base (1); The stator winding core (8) is fitted on the outer diameter of the positioning core (4), and its bottom is inserted into the stepped groove (101) of the base (1); The top of the stator winding core (8) abuts against the positioning groove (501) of the outer ring (5); The guide structure (402) of the positioning core (4) is inserted into the groove II (602) of the height limiting cover (6), and the height limiting cover (6) is located in the height limiting cover mounting groove (503) of the outer ring (5); The fastening structure (302) of the central column (3) passes through the through hole III (603) of the height limit cover (6) and the through hole IV (701) of the pressure plate (7) in sequence, and is then fixed by a nut.

2. The stator winding core potting fixture according to claim 1, characterized in that, An extension structure (104) is provided on the outer wall of the base (1).

3. The stator winding core potting fixture according to claim 1, characterized in that, The stepped groove (101) of the base (1) is chamfered.

4. The stator winding core potting fixture according to claim 1, characterized in that, The positioning groove (501) of the outer ring (5) is chamfered.

5. The stator winding core potting fixture according to claim 1, characterized in that, The stepped groove (101) of the base (1) has a certain slope.

6. The stator winding core potting fixture according to claim 1, characterized in that, The positioning core (4) is made of polytetrafluoroethylene rod; The positioning core (4) expands after heating and fills the inner hole of the stator winding core (8).

7. A stator winding core potting fixture according to claim 1, characterized in that, The base (1), exhaust ring (2), central column (3), outer ring (5), height limit cover (6), and pressure plate (7) are all made of aluminum alloy.

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