A slotless stator potting tool

Abstract

The application provides a slotless stator potting tool, and relates to the field of stator potting equipment. The tool comprises a fixed mold, a movable mold and a potting device. The movable mold can be combined with the fixed mold to form a potting mold cavity which is matched with the stator. A gas outlet is arranged at the top of the potting mold cavity, and a glue pouring hole which is connected with the outside is arranged at the bottom of the potting mold cavity. The potting device is connected with the glue pouring hole and can pour glue into the potting mold cavity from the glue pouring hole. The application has the effect of good potting quality.

Description

Technical Field

[0001] This application relates to the field of stator potting equipment, and in particular to a grooveless stator potting fixture. Background Technology

[0002] When manufacturing motor stators, stator potting equipment is needed to fix the coils and iron core together.

[0003] Existing stator potting equipment generally includes a fixed mold, a moving mold, and a potting device. The moving mold can be assembled with the fixed mold to form a mold cavity that is compatible with the stator to be potted. The top of the mold cavity has a glue injection port and the bottom has an air vent. The potting device is connected to the glue injection port and can inject epoxy resin and other potting adhesives into the mold cavity.

[0004] However, as the glue moves downwards along the mold cavity, it easily traps residual air in the cavity, resulting in a large number of air bubbles in the finished product and poor potting quality.

[0005] Therefore, there is a need to provide a slotless stator potting fixture. Summary of the Invention

[0006] To address the problem of numerous air bubbles and poor filling quality in the finished products produced by existing stator filling equipment, this application provides a grooveless stator filling fixture.

[0007] This application provides a slotless stator potting fixture, which adopts the following technical solution: it includes a fixed mold, a movable mold, and a potting device. The movable mold can be assembled with the fixed mold and formed between the two to form a potting cavity adapted to the stator. The top of the potting cavity is provided with an air outlet, and the bottom of the potting cavity is provided with a potting hole leading to the outside. The potting device is connected to the potting hole and can inject glue into the potting mold cavity from the potting hole.

[0008] By adopting the above technical solution, taking epoxy resin as the glue used in the potting device as an example, the user can first assemble the moving mold and the fixed mold, then put the stator to be potted into the potting mold cavity, and finally start the potting device to fill the potting mold cavity with epoxy resin from the glue filling hole at the bottom of the potting mold cavity. Since the epoxy resin will gradually fill the potting mold cavity from bottom to top, and the gas in the potting mold cavity will leave the potting mold cavity from the air outlet at the top of the potting mold cavity, the finished product obtained by potting will not have air bubbles inside, thereby ensuring good potting quality.

[0009] Specifically, the fixed mold has a fixed mold groove, the glue-filling hole is opened on the bottom wall of the fixed mold groove, the stator includes an annular base and an iron core and coil disposed inside the annular base, the fixed mold groove has a large diameter section and a small diameter section formed from top to bottom, a fixed mold abutment surface is formed between the large diameter section and the small diameter section, and the bottom port of the annular base can be inserted into the fixed mold groove and abut against the fixed mold abutment surface; The moving mold includes an outer sleeve and a mandrel. The inner wall of the outer sleeve has a wide diameter section and a narrow diameter section, and a moving mold contact surface is formed between the wide diameter section and the narrow diameter section. The top port of the annular unit can be inserted into the outer sleeve and abut against the moving mold contact surface. The bottom end of the mandrel can pass through the outer sleeve and the annular base in sequence and be inserted into the fixed mold groove. The filling cavity is formed between the inner wall of the fixed mold groove, the inner ring of the annular base, the inner wall of the outer sleeve, and the mandrel. The gap between the side port of the outer sleeve away from the fixed mold groove and the mandrel forms the air outlet.

[0010] By adopting the above technical solution, after assembling the fixed mold, the moving mold, and the ring base, the user can insert the mandrel into the fixed mold groove, so that the inner wall of the fixed mold groove, the inner ring of the ring base, and the inner wall of the outer sleeve form a potting cavity that is compatible with the coil and the iron core, thereby enabling the coil and the iron core to be potted onto the ring base using epoxy resin.

[0011] Furthermore, the outer sleeve has a fixed through hole along the vertical direction, and the top of the fixed mold has a fixed screw hole that matches the fixed through hole. The bolt can pass through the fixed through hole and be screwed into the fixed screw hole to abut the ring-shaped base between the fixed mold and the outer sleeve.

[0012] By adopting the above technical solution, the user can screw the bolts through the fixing through hole and the fixing screw hole to abut between the fixed mold and the outer sleeve, so that the epoxy resin is not easy to leak from the gap between the ring-shaped machine base and the fixed mold or the gap between the ring-shaped machine base and the outer sleeve.

[0013] Furthermore, a clearance hole is provided on the bottom wall of the mold groove, into which the wiring terminal of the coil can be inserted.

[0014] By adopting the above technical solution, when potting the coil, the coil's terminals can be inserted into the clearance hole so that the terminals are not potted into the epoxy resin.

[0015] Furthermore, it also includes a demolding assembly, which includes a pair of drive units and a rotating device. The pair of drive units are arranged opposite each other with the fixed mold as the center. The drive unit includes a fixed mold rod, a stop member, and a moving mold rod. The bottom end of the fixed mold rod is hinged to the outer wall of the fixed mold. The stop member is connected to the top end of the fixed mold rod. One end of the moving mold rod is hinged to one side of the outer sleeve, and the other end of the moving mold rod is hinged to the rod body of the fixed mold rod. The ends of the two fixed mold rods away from the fixed mold can approach each other and move the outer sleeve away from the fixed mold and the finished product sealed in the fixed mold. The two stop members can be connected to each other and prevent the finished product from leaving the fixed mold groove from the side port of the outer sleeve away from the fixed mold. The rotating device is detachably connected to one side of the fixed mold and can drive the fixed mold to rotate the moving mold, the driving unit and the finished product, so that the finished product separates from the groove wall of the fixed mold groove.

[0016] By adopting the above technical solution, after the potting is completed, the user can first pull the mandrel out of the potted finished product, and then pull the ends of the two fixed mold rods away from the fixed mold closer to each other so that the outer sleeve can separate from the potted finished product and move away from the fixed mold. Then, the two stop pieces are connected to each other and the fixed mold is connected to the rotating device. Finally, the rotating device is started to drive the moving mold, the drive unit and the finished product to rotate, so that the finished product can be separated from the wall of the fixed mold groove by using centrifugal force. The two connected stop pieces will prevent the finished product from flying out of the fixed mold groove from the side of the outer sleeve away from the fixed mold, so that the user does not need to use tools such as hammers to hit the fixed mold or moving mold to achieve demolding, thereby achieving rapid demolding of the finished product and preventing damage to the fixed mold and moving mold during demolding.

[0017] Furthermore, it also includes a lifting platform, on which both the rotating device and the filling device are mounted.

[0018] By adopting the above technical solution, users can adjust the height of the rotating device and the filling device off the ground using the lifting platform.

[0019] Furthermore, a counterweight is provided at the bottom of the lifting platform.

[0020] By adopting the above technical solution, the counterweight can increase the stability of the bottom of the lifting platform, so that the rotating device at the top of the lifting platform can rotate the fixed mold.

[0021] Furthermore, the demolding assembly also includes a connecting pipe and a snap-fit ​​block. The potting hole includes a vertical flow channel and a horizontal flow channel. The top of the vertical flow channel communicates with the potting mold cavity, and the bottom of the vertical flow channel communicates with one end of the horizontal flow channel. The other end of the horizontal flow channel extends to the side wall of the fixed mold and forms an opening. One end of the connecting pipe is inserted into the horizontal flow channel and the snap-fit ​​block is provided at that end. The inner wall of the horizontal flow channel has a snap-fit ​​hole adapted to the snap-fit ​​block. The end of the connecting pipe away from the snap-fit ​​block is detachably connected to the rotating device. The snap-fit ​​block can be inserted into the snap-fit ​​hole and abut against the inner wall of the snap-fit ​​hole, so that the rotating device can drive the fixed mold to rotate via the connecting pipe.

[0022] By adopting the above technical solution, after the snap-fit ​​block is inserted into the snap-fit ​​hole and abuts against the inner wall of the snap-fit ​​hole, the user can drive the fixed mold to rotate by connecting the rotating device to the connecting pipe.

[0023] Furthermore, the connecting tube is provided with a glue passage hole leading into the tube. The potting device can be connected to the end of the connecting tube away from the snap-fit ​​block and allow the glue to pass through the connecting tube and the glue passage hole in sequence into the vertical flow channel.

[0024] By adopting the above technical solution, users can connect the potting device to the end of the connecting pipe away from the snap-fit ​​block to inject epoxy resin into the vertical flow channel.

[0025] Furthermore, the demolding assembly also includes an elastic element, and a receiving groove is provided at one end of the connecting pipe that is inserted into the transverse flow channel. The snap-fit ​​block is disposed in the receiving groove, and the elastic element is disposed between the snap-fit ​​block and the groove wall of the receiving groove. The wall of the glue-through hole is provided with a glue-cutting blade. When the connecting tube rotates, the glue-cutting blade can pass through the bottom port of the vertical flow channel and cut off the glue solidified between the port and the glue-through hole. After the glue-cutting blade has completely passed through the bottom port of the vertical flow channel, the groove of the receiving groove is aligned with the snap-fit ​​hole, and the elastic element can apply a force close to the snap-fit ​​hole to the snap-fit ​​block and insert one end of the snap-fit ​​block into the snap-fit ​​hole.

[0026] By adopting the above technical solution, after injection molding, the user can first connect the rotating device to the connecting pipe and hold the fixed mold. Then, the rotating device is started to drive the connecting pipe to rotate at a low speed in the horizontal flow channel. When the cutting blade has completely passed the bottom port of the vertical flow channel, the cutting blade will cut off the epoxy resin solidified between the bottom port of the vertical flow channel and the through hole, so that the finished product obtained by injection can leave the fixed mold groove easily. When the connecting pipe rotates to the position where the groove of the receiving groove is aligned with the snap-fit ​​hole, the snap-fit ​​block will be driven by the elastic element to move towards the snap-fit ​​hole and insert into the snap-fit ​​hole. At this time, the user can release the fixed mold and control the rotating device to drive the connecting pipe to drive the fixed mold to rotate at high speed, so as to better achieve demolding of the finished product.

[0027] In summary, this application includes at least one of the following beneficial technical effects: 1. Includes a fixed mold, a movable mold, and a filling device. The movable mold can be assembled with the fixed mold to form a filling cavity that is compatible with the stator. The top of the filling cavity has an air vent, and the bottom of the filling cavity has a glue-filling hole leading to the outside. The filling device is connected to the glue-filling hole and can fill the filling cavity with glue through the glue-filling hole. Taking epoxy resin as an example, the user can first assemble the movable mold and the fixed mold, then put the stator to be filled into the filling cavity, and finally start the filling device to fill the filling cavity with epoxy resin through the glue-filling hole at the bottom of the filling cavity. Since the epoxy resin will gradually fill the filling cavity from bottom to top, and the gas in the filling cavity will leave the filling cavity through the air vent at the top of the filling cavity, the finished product obtained by filling will not have air bubbles, thus ensuring good filling quality. 2. It also includes a demolding assembly, which comprises a pair of drive units and a rotating device. The pair of drive units are arranged opposite each other with the fixed mold as the center. Each drive unit includes a fixed mold rod, a stop, and a moving mold rod. The bottom end of the fixed mold rod is hinged to the outer wall of the fixed mold. The stop is connected to the top end of the fixed mold rod. One end of the moving mold rod is hinged to one side of the outer sleeve, and the other end of the moving mold rod is hinged to the rod body of the fixed mold rod. The ends of the two fixed mold rods away from the fixed mold can move closer to each other and move the outer sleeve away from the fixed mold and the finished product sealed inside the fixed mold. The two stopes can be connected to each other and prevent the finished product from leaving the fixed mold groove from the port on the outer sleeve away from the fixed mold. The rotating device is detachably connected to one side of the fixed mold and can drive the fixed mold to rotate, thereby rotating the moving mold, the drive units, and the finished product, so that the finished product is in contact with the fixed mold groove. After potting, the user can first pull the mandrel out of the potted product, then pull the ends of the two fixed mold rods away from the fixed mold closer together so that the outer sleeve can separate from the potted product and move away from the fixed mold. Next, connect the two stoppers to each other and connect the fixed mold to the rotating device. Finally, start the rotating device to drive the moving mold, drive unit and product to rotate so that the product can be separated from the wall of the fixed mold groove by centrifugal force. The two connected stoppers will prevent the product from flying out of the fixed mold groove from the side of the outer sleeve away from the fixed mold. This allows the user to demold without using tools such as hammers to hit the fixed mold or moving mold, thus achieving quick demolding of the product and preventing damage to the fixed mold and moving mold during demolding. Attached Figure Description

[0028] Figure 1 This is a perspective view of the first embodiment of this application; Figure 2 It is along Figure 1 A schematic cross-sectional view taken along the central axis of the mold along its length; Figure 3 This is a perspective view of the second embodiment of this application; Figure 4 It is along Figure 3 A schematic cross-sectional view taken along the central axis of the mold along its length; Figure 5 yes Figure 4 A schematic enlarged view of region A in the middle, showing the connecting pipe.

[0029] Reference numerals: 1. Fixed mold; 11. Fixed mold groove; 111. Filling hole; 1111. Vertical runner; 1112. Horizontal runner; 112. Fixed mold mating surface; 12. Fixing screw hole; 2. Moving mold; 21. Outer sleeve; 211. Moving mold mating surface; 22. Mandrel; 23. Air outlet; 3. Filling device; 31. Glue storage tank; 32. Elevating boss; 4. Stator; 41. Ring-shaped base ; 42. Terminal block; 5. Demolding assembly; 51. Drive unit; 511. Fixed mold rod; 512. Stop; 5121. Pin joint; 5122. Pin sleeve; 513. Moving mold rod; 52. Rotating device; 521. Output shaft; 5211. Snap ring; 53. Connecting pipe; 531. Glue cutter head; 54. Snap block; 55. Elastic element; 6. Lifting platform; 61. Counterweight block. Detailed Implementation

[0030] The following is in conjunction with the appendix Figure 1-5 Further explanation: See Figure 1 and Figure 2 In the first embodiment, a slotless stator potting fixture includes a fixed mold 1, a movable mold 2, and a potting device 3. The fixed mold 1 has a fixed mold groove 11, and a potting hole 111 is opened on the bottom wall of the fixed mold groove 11. The stator 4 includes an annular base 41 and an iron core and a coil disposed inside the annular base 41. The bottom of the coil is also provided with a terminal 42. A clearance hole adapted to the terminal 42 is opened on the bottom wall of the fixed mold groove 11. The terminal 42 of the coil can be inserted into the clearance hole and leave the fixed mold groove 11, so that the terminal 42 will not be potted into the epoxy resin.

[0031] See Figure 1 and Figure 2 The fixed mold groove 11 has a large diameter section and a small diameter section formed from top to bottom. A fixed mold abutment surface 112 is formed between the large diameter section and the small diameter section. The bottom port of the annular base 41 can be inserted into the fixed mold groove 11 and abut against the fixed mold abutment surface 112. The moving mold 2 includes an outer sleeve 21 and a mandrel 22. A wide diameter section and a narrow diameter section are formed on the inner wall of the outer sleeve 21. A moving mold abutment surface 211 is formed between the wide diameter section and the narrow diameter section. The top port of the annular unit can be inserted into the outer sleeve 21 and abut against the moving mold abutment surface 211. The bottom end of the mandrel 22 can pass through the outer sleeve 21 and the annular base 41 in sequence and be inserted into the fixed mold groove 11. A filling cavity is formed between the inner wall of the fixed mold groove 11, the inner ring of the annular base, the inner wall of the outer sleeve 21 and the mandrel 22. The gap between the side port of the outer sleeve 21 away from the fixed mold groove 11 and the mandrel 22 is formed as an air outlet 23.

[0032] See Figure 1 and Figure 2The outer casing 21 has three fixed through holes at equal intervals around its central axis. Each fixed through hole is opened in the vertical direction. The top of the fixed mold 1 has three fixed screw holes 12 that are adapted to the three fixed through holes. The user can screw three bolts through the three fixed through holes and the three fixed screw holes 12 to abut the ring base 41 between the fixed mold 1 and the outer casing 21, so that the epoxy resin is not easy to leak from the gap between the ring base 41 and the fixed mold 1 or the gap between the ring base 41 and the outer casing 21.

[0033] See Figure 1 and Figure 2 The potting device 3 includes a glue storage tank 31 and a raised platform 32. The glue storage tank 31 can store glue such as epoxy resin required for potting. One side of the glue storage tank 31 is connected to the glue injection hole through a pipe. The raised platform 32 is located at the bottom of the glue storage tank 31. The height of the raised platform 32 can be set so that the bottom of the glue storage tank 31 is not lower than the air outlet 23 of the potting mold cavity, so that the epoxy resin in the glue storage tank 31 can fill the entire potting mold cavity under the action of gravity.

[0034] With the above setup, the user can first assemble the fixed mold 1, the moving mold 2, and the annular base 41, and then insert the mandrel 22 into the fixed mold groove 11, so that the inner wall of the fixed mold groove 11, the inner ring of the annular base, and the inner wall of the outer sleeve 21 form a potting cavity that is compatible with the coil and the iron core. Finally, the potting device 3 is started to fill the potting cavity with epoxy resin from the potting hole 111 at the bottom of the potting cavity. Since the epoxy resin will gradually fill the potting cavity from bottom to top, and the gas in the potting cavity will leave the potting cavity from the air outlet 23 at the top of the potting cavity, the finished product obtained by potting will not have air bubbles inside, thereby ensuring good potting quality.

[0035] Referring to the second embodiment, a slotless stator potting fixture further includes a demolding assembly 5 and a lifting platform 6. The demolding assembly 5 includes a rotating device 52, a pair of drive units 51, a connecting pipe 53, a snap-fit ​​block 54, and an elastic element 55. The rotating device 52 and the potting device 3 are arranged opposite each other on the top of the lifting platform 6. The bottom of the lifting platform 6 is also provided with two configuration blocks to increase the stability of the bottom of the lifting platform 6. The lifting platform 6 can be a lifting platform 6 driven by a hydraulic cylinder and adopting a scissor structure. Since this type of lifting platform 6 is prior art, it will not be described in detail here.

[0036] See Figure 3 and Figure 4A pair of drive units 51 are arranged opposite each other with the fixed mold 1 as the center. Each drive unit 51 includes a fixed mold rod 511, a stop 512, and a moving mold rod 513. The bottom end of each fixed mold rod 511 is hinged to the outer wall of the fixed mold 1. Each stop 512 is connected to the top end of the fixed mold rod 511. One end of the moving mold rod 513 is hinged to one side of the outer sleeve 21, and the other end of the moving mold rod 513 extends downward and is hinged to the rod body of the fixed mold rod 511. It should be noted that the angle between the side of the moving mold rod 513 near the fixed mold 1 and the rod body of the fixed mold rod 511 should be an obtuse angle, so that when the ends of the two fixed mold rods 511 away from the fixed mold 1 approach each other, the moving mold rod 513 will drive the outer sleeve 21 away from the fixed mold 1 and the finished product sealed in the fixed mold 1.

[0037] See Figure 3 and Figure 4 One of the two stop members 512 is provided with a pin connector 5121 and the other is provided with a pin sleeve 5122. When the ends of the two fixed mold rods 511 away from the fixed mold 1 approach each other, the pin connector 5121 can be inserted into the pin sleeve 5122. Both the pin connector 5121 and the pin sleeve 5122 are provided with connecting holes for pin connection, so that the user can use a bolt to pass through the connecting holes on the pin connector 5121 and the pin sleeve 5122 and connect with a nut to connect the two stop members 512 together. Then, the two interconnected stop members 512 will prevent the finished product from leaving the fixed mold groove 11 from the side port of the outer sleeve 21 away from the fixed mold 1.

[0038] See Figure 4 and Figure 5 The injection hole 111 includes a vertical flow channel 1111 and a horizontal flow channel 1112. The top of the vertical flow channel 1111 communicates with the injection mold cavity, and the bottom of the vertical flow channel 1111 communicates with one end of the horizontal flow channel 1112. The other end of the horizontal flow channel 1112 extends to the side wall of the fixed mold 1 and forms an opening. One end of the connecting pipe 53 is inserted into the horizontal flow channel 1112 and a receiving groove is formed at that end. The snap-fit ​​block 54 is disposed in the receiving groove. The elastic element 55 is a compression spring, which is disposed between the snap-fit ​​block 54 and the groove wall of the receiving groove. The inner wall of the transverse flow channel 1112 is provided with a snap-fit ​​hole that matches the snap-fit ​​block 54; the tube body of the connecting tube 53 is also provided with a glue-passing hole leading to the tube. The glue-passing hole is provided with two glue-cutting heads 531 on the two hole walls extending along the length direction of the transverse flow channel 1112. The user can insert the tube of the glue storage tank 31 into the connecting tube 53 from the end away from the vertical flow channel 1111, so that the epoxy resin in the glue storage tank 31 can pass through the connecting tube 53 and the glue-passing hole in sequence and enter the vertical flow channel 1111.

[0039] It should be noted that when the glue passage hole is aligned with the bottom port of the vertical flow channel 1111, the groove of the receiving groove is offset from the snap-fit ​​hole, and the snap-fit ​​block 54 will still remain in the receiving groove.

[0040] See Figure 4 and Figure 5 The rotating device 52 is a rotary motor. The output shaft 521 of the rotary motor can be connected to a pin on the connecting pipe 53 that extends out of the transverse flow channel 1112 by using bolts and nuts as pins. A snap ring 5211 is also provided on the output shaft 521 of the rotary motor. An annular snap groove adapted to the snap ring 5211 is provided on one side of the fixed mold 1. When the output shaft 521 of the rotary motor is pin connected to the connecting pipe 53, the snap ring 5211 can be inserted into the snap groove and abut against the inner wall of the snap groove, so that the fixed mold 1 can be prevented from falling off the connecting pipe 53 by the cooperation of the snap ring 5211 and the snap groove.

[0041] The demolding sequence of the slotless stator potting fixture provided in this application is as follows: After potting, the user can first remove the mandrel 22 from the potted finished product, then remove all the bolts in the fixing screw holes 12, and then pull the ends of the two fixed mold rods 511 away from the fixed mold 1 closer together so that the outer sleeve 21 can separate from the potted finished product and move away from the fixed mold 1. Then, use bolts and nuts as pins to connect the two stop pieces 512 and the connecting pipe 53 to the output shaft 521 of the rotary motor. Then, hold the fixed mold 1 and start the rotating device 52 to drive the connecting pipe 53 to rotate in the transverse flow channel 1112 at a low speed. When the cutting head 531 has completely passed the bottom port of the vertical flow channel 1111, the cutting head 531 will cut the epoxy resin solidified between the bottom port of the vertical flow channel 1111 and the glue hole, so that the epoxy resin solidified in the transverse flow channel 1112 is separated from the finished product and will not interfere with the product. The product leaves the fixed mold groove 11, which obstructs the flow and allows the finished product to leave the fixed mold groove 11 easily. When the connecting pipe 53 rotates to the position where the opening of the receiving groove is aligned with the snap-fit ​​hole, the snap-fit ​​block 54 is driven by the elastic element 55 to move towards the snap-fit ​​hole and insert into the snap-fit ​​hole. At this time, the user can release the fixed mold 1 and control the rotating device 52 to drive the connecting pipe 53 to drive the fixed mold 1, the moving mold 2, the driving unit 51 and the finished product to rotate at high speed. This allows the finished product to be separated from the groove wall of the fixed mold groove 11 by using centrifugal force. The two interconnected stoppers 512 prevent the finished product from flying out of the fixed mold groove 11 from the side port of the outer sleeve 21 away from the fixed mold 1. This allows the user to demold without using tools such as hammers to strike the fixed mold 1 or the moving mold 2, thus enabling rapid demolding of the finished product without damaging the fixed mold 1 and the moving mold 2 during demolding.

[0042] The implementation principle of the slotless stator potting fixture described in this application is as follows: The user can first assemble the fixed mold 1, the moving mold 2, and the ring base 41, and then insert the mandrel 22 into the fixed mold groove 11 so that the inner wall of the fixed mold groove 11, the inner ring of the ring base, and the inner wall of the outer sleeve 21 form a potting cavity that is compatible with the coil and the iron core. Finally, the potting device 3 is started to fill the potting cavity with epoxy resin from the potting hole 111 at the bottom of the potting cavity. As the epoxy resin gradually fills the potting cavity from bottom to top, the gas in the potting cavity will leave the potting cavity from the air outlet 23 at the top of the potting cavity, so that no air bubbles will appear inside the potted finished product, thus ensuring good potting quality.

[0043] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be covered within the scope of protection of this application.

Claims

1. A slotless stator potting fixture for potting stators, characterized in that: It includes a fixed mold (1), a movable mold (2), a filling device (3) and a demolding assembly (5). The movable mold (2) can be assembled with the fixed mold (1) to form a filling cavity that is compatible with the stator (4). The top of the filling cavity is provided with an air outlet (23) and the bottom of the filling cavity is provided with a glue-filling hole (111) leading to the outside. The potting device (3) is connected to the potting hole (111) and can inject glue into the potting mold cavity from the potting hole (111); The fixed mold (1) is provided with a fixed mold groove (11), and the glue-filling hole (111) is provided on the bottom wall of the fixed mold groove (11). The stator (4) includes an annular base (41) and an iron core and a coil disposed inside the annular base (41). The interior of the fixed mold groove (11) is formed with a large diameter section and a small diameter section from top to bottom. A fixed mold abutment surface (112) is formed between the large diameter section and the small diameter section. The bottom port of the annular base (41) can be inserted into the fixed mold groove (11) and abut against the fixed mold abutment surface (112). The moving mold (2) includes an outer sleeve (21) and a mandrel (22). A wide diameter section and a narrow diameter section are formed on the inner wall of the outer sleeve (21). A moving mold contact surface (211) is formed between the wide diameter section and the narrow diameter section. The top port of the ring-shaped base can be inserted into the outer sleeve (21) and abut against the moving mold contact surface (211). The bottom end of the mandrel (22) can pass through the outer sleeve (21) and the ring-shaped base (41) in sequence and be inserted into the fixed mold groove (11). The filling cavity is formed between the inner wall of the fixed mold groove (11), the inner ring of the ring-shaped base, the inner wall of the outer sleeve (21), and the mandrel (22). The gap between the side port of the outer sleeve (21) away from the fixed mold groove (11) and the mandrel (22) forms the air outlet (23). The demolding assembly (5) includes a pair of drive units (51) and a rotating device (52). The pair of drive units (51) are arranged opposite each other with the fixed mold (1) as the center. The drive unit (51) includes a fixed mold rod (511), a stop (512) and a moving mold rod (513). The bottom end of the fixed mold rod (511) is hinged to the outer wall of the fixed mold (1). The stop (512) is connected to the top end of the fixed mold rod (511). One end of the moving mold rod (513) is hinged to one side of the outer sleeve (21). The other end of the moving mold rod (513) is hinged to the rod body of the fixed mold rod (511). The ends of the two fixed mold rods (511) away from the fixed mold (1) can approach each other and move the outer sleeve (21) away from the fixed mold (1) and the finished product filled in the fixed mold (1), and the two stop members (512) can be connected to each other and prevent the finished product from leaving the fixed mold groove (11) from the side port of the outer sleeve (21) away from the fixed mold (1); The rotating device (52) is detachably connected to one side of the fixed mold (1) and can drive the fixed mold (1) to drive the moving mold (2), the driving unit (51) and the finished product to rotate, so that the finished product is separated from the groove wall of the fixed mold groove (11).

2. The slotless stator potting fixture according to claim 1, characterized in that: The outer sleeve (21) has a fixed through hole in the vertical direction. The top of the fixed mold (1) has a fixed screw hole (12) that matches the fixed through hole. The bolt can pass through the fixed through hole and screw into the fixed screw hole (12) to abut the ring base (41) between the fixed mold (1) and the outer sleeve (21).

3. The slotless stator potting fixture according to claim 1, characterized in that: The bottom wall of the fixed mold groove (11) is provided with a clearance hole, and the wiring terminal (42) of the coil can be inserted into the clearance hole.

4. The slotless stator potting fixture according to claim 1, characterized in that: It also includes a lifting platform (6), on which the rotating device (52) and the filling device (3) are both located.

5. The slotless stator potting fixture according to claim 4, characterized in that: The bottom of the lifting platform (6) is provided with a counterweight (61).

6. The slotless stator potting fixture according to claim 1, characterized in that: The demolding assembly (5) further includes a connecting pipe (53) and a snap-fit ​​block (54). The potting hole (111) includes a vertical flow channel (1111) and a horizontal flow channel (1112). The top of the vertical flow channel (1111) communicates with the potting mold cavity, and the bottom of the vertical flow channel (1111) communicates with one end of the horizontal flow channel (1112). The other end of the horizontal flow channel (1112) extends to the side wall of the fixed mold (1) and forms an opening. One end of the connecting pipe (53) is inserted into the mold cavity. The transverse flow channel (1112) has a snap-fit ​​block (54) at its end port. The inner wall of the transverse flow channel (1112) has a snap-fit ​​hole that matches the snap-fit ​​block (54). The end of the connecting pipe (53) away from the snap-fit ​​block (54) is detachably connected to the rotating device (52). The snap-fit ​​block (54) can be inserted into the snap-fit ​​hole and abut against the inner wall of the snap-fit ​​hole, so that the rotating device (52) can drive the fixed mold (1) to rotate via the connecting pipe (53).

7. A slotless stator potting fixture according to claim 6, characterized in that: The connecting tube (53) is also provided with a glue passage hole leading to the inside of the tube. The potting device (3) can be connected to the end of the connecting tube (53) away from the snap-fit ​​block (54) and allow the glue to pass through the connecting tube (53) and the glue passage hole in sequence into the vertical flow channel (1111).

8. A slotless stator potting fixture according to claim 7, characterized in that: The demolding assembly (5) also includes an elastic element (55). A receiving groove is provided at one end of the connecting pipe (53) that is inserted into the transverse flow channel (1112). The snap-fit ​​block (54) is disposed in the receiving groove. The elastic element (55) is disposed between the snap-fit ​​block (54) and the groove wall of the receiving groove. The wall of the glue-through hole is provided with a glue-cutting head (531). When the connecting tube (53) rotates, the glue-cutting head (531) can pass through the bottom port of the vertical flow channel (1111) and cut off the glue solidified between the port and the glue-through hole. After the glue-cutting head (531) has completely passed through the bottom port of the vertical flow channel (1111), the groove of the receiving groove is aligned with the snap-fit ​​hole, and the elastic member (55) can apply a force close to the snap-fit ​​hole to the snap-fit ​​block (54) and insert one end of the snap-fit ​​block (54) into the snap-fit ​​hole.

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