Slotless stator potting tool

Abstract

The invention provides a slotless stator potting tool, and relates to the field of stator potting equipment. The invention discloses a stator potting mold which comprises a fixed mold, a movable mold and a potting device, the movable mold can be spliced with the fixed mold, a potting mold cavity matched with a stator is formed between the movable mold and the fixed mold, an air outlet is formed in the top of the potting mold cavity, and a glue potting hole leading to the outside is formed in the bottom of the potting mold cavity; the potting device is connected with the glue pouring hole and can pour glue into the potting die cavity from the glue pouring hole. The method has the effect of good potting quality.

Description

Technical Field

[0001] The present application relates to the field of stator potting equipment, and in particular to a slotless stator potting tool. Background Art

[0002] When producing motor stators, stator potting equipment is required to fix the coil and core together.

[0003] The existing stator potting equipment generally includes a fixed mold, a movable mold and a glue pouring device. The movable mold can be assembled with the fixed mold and a mold cavity adapted to the stator to be potted is formed between the two. The mold cavity is provided with a glue injection port at the top and an air outlet at the bottom. The glue pouring device is connected to the glue injection port and can pour epoxy resin or other glue required for potting into the mold cavity.

[0004] However, since the glue easily entrains the residual air in the mold cavity during the process of moving downward along the mold cavity, more bubbles are present in the finished product obtained by potting, and the potting quality is poor.

[0005] In view of this, it is necessary to provide a slotless stator potting tool. Summary of the invention

[0006] In order to solve the problem of many bubbles in the finished products potted by the existing stator potting equipment and poor potting quality, the present application provides a slotless stator potting tool.

[0007] The present application provides a slotless stator potting tool, which adopts the following technical solution: comprising a fixed mold, a movable mold and a potting device, wherein the movable mold can be assembled with the fixed mold and a potting cavity adapted to the stator is formed between the two, an air outlet is provided at the top of the potting cavity, and a glue potting hole leading to the outside is provided at the bottom of the potting cavity; The potting device is connected to the glue potting hole and can pour glue into the potting mold cavity from the glue potting hole.

[0008] By adopting the above technical solution, taking the glue used in the potting device as epoxy resin as an example, the user can first assemble the movable mold and the fixed mold, then put the stator to be potted into the potting cavity, and finally start the potting device to fill the epoxy resin into the potting cavity from the glue filling hole at the bottom of the potting cavity. Since the epoxy resin will gradually fill the potting cavity from bottom to top, the gas in the potting cavity will completely leave the potting cavity from the air outlet at the top of the potting cavity, so that no bubbles will appear inside the finished product obtained by potting, thereby ensuring good potting quality.

[0009] Specifically, a fixed die groove is provided on the fixed die, the glue injection hole is provided on the bottom wall of the fixed die groove, the stator comprises an annular machine base and an iron core and a coil arranged inside the annular machine base, a large diameter section and a small diameter section are formed inside the fixed die groove from top to bottom, a fixed die abutting surface is formed between the large diameter section and the small diameter section, and the bottom port of the annular machine base can be inserted into the fixed die groove and abut against the fixed die abutting surface; The movable mold includes an outer sleeve and a core rod, a wide diameter section and a narrow diameter section are formed on the inner wall of the outer sleeve, a movable mold abutment 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 movable mold abutment surface, the bottom end of the core rod can sequentially pass through the outer sleeve and the annular machine base and be inserted into the fixed mold groove, and the encapsulation mold cavity is formed between the inner wall of the fixed mold groove, the inner ring of the annular machine base, the inner wall of the outer sleeve and the core rod, and the space between the side port of the outer sleeve away from the fixed mold groove and the core rod forms the air outlet.

[0010] By adopting the above technical solution, after the fixed mold, the movable mold and the annular base are assembled, the user can insert the core rod into the fixed mold groove, so that a potting mold cavity compatible with the coil and the iron core 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 core rod, so that the coil and the iron core can be potted onto the annular base using epoxy resin.

[0011] Furthermore, a fixing through hole is opened on the outer sleeve along the vertical direction, and a fixing screw hole adapted to the fixing through hole is opened on the top of the fixed mold. Bolts can pass through the fixing through hole and be screwed to the fixing screw hole to abut the annular machine base between the fixed mold and the outer sleeve.

[0012] By adopting the above technical solution, the user can place the annular base between the fixed mold and the outer sleeve by passing the bolts through the fixing through holes and screwing them into the fixing screw holes, so that the epoxy resin is not easily leaked from the gap between the annular base and the fixed mold or the gap between the annular base and the outer sleeve.

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

[0014] By adopting the above technical solution, when potting the coil, the connection terminal of the coil can be inserted into the clearance hole, so that the connection terminal will not be potted into the epoxy resin.

[0015] Furthermore, it also includes a demoulding assembly, the demoulding assembly includes a pair of driving units and a rotating device, the pair of driving units are relatively arranged with the fixed mold as the center, the driving unit includes a fixed mold rod, a stopper and a movable mold rod, the bottom end of the fixed mold rod is hinged on the outer side wall of the fixed mold, the stopper is connected to the top end of the fixed mold rod, one end of the movable mold rod is hinged to one side of the outer sleeve, and the other end of the movable 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 make the outer sleeve away from the fixed mold and the finished product potted in the fixed mold, and the two stoppers can be connected to each other and prevent the finished product from leaving the fixed mold groove from a 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 drive the movable mold, the driving unit and the finished product to rotate, so that the finished product is separated 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 out the core rod from the finished product obtained by potting, 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 be separated from the finished product obtained by potting and move in the direction away from the fixed mold, then connect the two stoppers to each other and connect the fixed mold to the rotating device, and finally start the rotating device to drive the movable mold, the driving unit and the finished product to rotate, so that the centrifugal force can be used to separate the finished product from the groove wall of the fixed mold groove, and the two interconnected stoppers will prevent the finished product from flying out of the fixed mold groove from the side port of the outer sleeve away from the fixed mold, so that the user does not need to use a hammer or other tools to knock the fixed mold or the movable mold to achieve demolding, thereby achieving quick demolding of the finished product and will not cause damage to the fixed mold and the movable mold during demolding.

[0017] Furthermore, it also includes a lifting platform, and the rotating device and the potting device are both arranged on the lifting platform.

[0018] By adopting the above technical solution, the user can adjust the height of the rotating device and the filling device from the ground through 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 block can increase the stability of the bottom of the lifting platform, so that the rotating device on the top of the lifting platform can rotate the fixed mold.

[0021] Furthermore, the demolding assembly also includes a connecting tube and a clamping block, the glue injection hole includes a vertical flow channel and a transverse flow channel, the top of the vertical flow channel is connected to the injection mold cavity, the bottom of the vertical flow channel is connected to one end of the transverse flow channel, the other end of the transverse flow channel extends to the side wall of the fixed mold and forms an opening, one end of the connecting tube is inserted into the transverse flow channel and the clamping block is provided at the end port, a clamping hole matched with the clamping block is provided on the inner wall of the transverse flow channel, one end of the connecting tube away from the clamping block is detachably connected to the rotating device, the clamping block can be inserted into the clamping hole and abut against the inner wall of the clamping hole, so that the rotating device can drive the fixed mold to rotate via the connecting tube.

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

[0023] Furthermore, a glue hole leading to the inside of the tube is provided on the body of the connecting tube, and the potting device can be connected to an end of the connecting tube away from the clamping block and allow the glue to sequentially pass through the connecting tube and the glue hole into the vertical flow channel.

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

[0025] Furthermore, the demoulding assembly further comprises an elastic member, a receiving groove is provided at one end of the connecting pipe inserted into the transverse flow channel, the clamping block is arranged in the receiving groove, and the elastic member is arranged between the clamping block and the groove wall of the receiving groove; A glue cutting knife head is provided on the hole wall of the glue through hole. When the connecting tube rotates, the glue cutting knife head can pass through the bottom port of the vertical flow channel and cut off the solidified glue between the port and the glue through hole. After the glue cutting knife head completely passes through the bottom port of the vertical flow channel, the notch of the accommodating groove is aligned with the clamping hole, and the elastic member can apply a force to the clamping block to approach the clamping hole and insert one end of the clamping block into the clamping hole.

[0026] By adopting the above technical solution, after injection molding, the user can first connect the rotating device to the connecting tube and hold the fixed mold, and then start the rotating device to drive the connecting tube to rotate at a lower speed in the horizontal flow channel. When the glue cutting knife head completely passes through the bottom port of the vertical flow channel, the glue cutting knife head will cut off the solidified epoxy resin between the bottom port of the vertical flow channel and the glue hole, so that the finished product obtained by injection can be easily removed from the fixed mold groove; and when the connecting tube rotates to a position where the notch of the accommodating groove is aligned with the snap-in hole, the snap-in block will be driven by the elastic member to move toward the direction close to the snap-in hole and inserted into the snap-in hole. At this time, the user can loosen the fixed mold and control the rotating device to drive the connecting tube to drive the fixed mold to rotate at high speed, so as to better realize the demolding of the finished product.

[0027] In summary, the present application includes at least one of the following beneficial technical effects: 1. It includes a fixed mold, a movable mold and a potting device. The movable mold can be assembled with the fixed mold and a potting cavity adapted to the stator is formed between the two. The top of the potting cavity is provided with an air outlet, and the bottom of the potting cavity is provided with a glue injection hole leading to the outside. The potting device is connected to the glue injection hole and can inject glue into the potting cavity from the glue injection hole. For example, the glue used by the potting device is epoxy resin. The user can first assemble the movable mold with the fixed mold, and then put the stator to be potted into the potting cavity. Finally, the potting device is started to fill the potting cavity with epoxy resin from the glue injection hole at the bottom of the potting cavity. Since the epoxy resin will gradually fill the potting cavity from bottom to top, the gas in the potting cavity will completely leave the potting cavity from the air outlet at the top of the potting cavity, so that no bubbles will appear inside the potted finished product, thereby ensuring good potting quality; 2. It also includes a demoulding component, which includes a pair of driving units and a rotating device. The pair of driving units are relatively arranged with the fixed mold as the center, and the driving unit includes a fixed mold rod, a stopper and a movable mold rod. The bottom end of the fixed mold rod is hinged on the outer wall of the fixed mold, the stopper is connected to the top end of the fixed mold rod, one end of the movable mold rod is hinged to one side of the outer sleeve, and the other end of the movable 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 make the outer sleeve away from the fixed mold and the finished product potted in the fixed mold, and the two stoppers can be connected to each other and prevent the finished product from leaving the fixed mold groove from the port on the side 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 drive the movable mold, the driving unit and the finished product to rotate, so that the finished product and the fixed mold groove are close to each other. Groove wall separation. After the potting is completed, the user can first pull the core rod out of the finished product obtained by potting, 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 be separated from the finished product obtained by potting and move in the direction away from the fixed mold, then connect the two stoppers to each other and connect the fixed mold to the rotating device, and finally start the rotating device to drive the movable mold, the driving unit and the finished product to rotate, so that the centrifugal force can be used to separate the finished product from the groove wall of the fixed mold groove, and the two interconnected stoppers will prevent the finished product from flying out of the fixed mold groove from the side port of the outer sleeve away from the fixed mold, so that the user does not need to use tools such as hammers to knock on the fixed mold or the movable mold to achieve demolding, thereby achieving quick demolding of the finished product and will not cause damage to the fixed mold and the movable mold during demolding. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is a stereogram of the first embodiment of the present application; Figure 2 is along Figure 1 A schematic cross-sectional view taken along the central axis in the length direction of the fixed mold; Figure 3 is a stereogram of a second embodiment of the present application; Figure 4 is along Figure 3 A schematic cross-sectional view taken along the central axis in the length direction of the fixed mold; Figure 5 yes Figure 4 Schematic enlargement of area A, showing the connecting tube.

[0029] Reference numerals: 1, fixed mold; 11, fixed mold groove; 111, glue injection hole; 1111, vertical flow channel; 1112, transverse flow channel; 112, fixed mold abutment surface; 12, fixing screw hole; 2, movable mold; 21, outer sleeve; 211, movable mold abutment surface; 22, core rod; 23, air outlet; 3, potting device; 31, glue storage tank; 32, pad boss; 4, stator; 41, ring-shaped machine base ; 42. Wiring terminal; 5. Demolding assembly; 51. Driving unit; 511. Fixed mold rod; 512. Stopper; 5121. Pin joint; 5122. Pin sleeve; 513. Moving mold rod; 52. Rotating device; 521. Output shaft; 5211. Snap ring; 53. Connecting pipe; 531. Glue cutting knife head; 54. Snap block; 55. Elastic part; 6. Lifting platform; 61. Counterweight. DETAILED DESCRIPTION

[0030] The following is combined with Figure 1-5 For further explanation: See also Figure 1 and Figure 2 In the first embodiment, a slotless stator potting tool includes a fixed mold 1, a movable mold 2 and a potting device 3. The fixed mold 1 is provided with a fixed mold slot 11, and a glue injection hole 111 is provided on the bottom wall of the fixed mold slot 11. The stator 4 includes an annular machine base 41 and an iron core and a coil arranged inside the annular machine base 41. A terminal 42 is further provided at the bottom of the coil. A clearance hole adapted to the terminal 42 is provided on the bottom wall of the fixed mold slot 11. The terminal 42 of the coil can be inserted into the clearance hole and leave the fixed mold slot 11, so that the terminal 42 will not be potted into the epoxy resin.

[0031] See also Figure 1 and Figure 2 The interior of the fixed die groove 11 is formed with a large diameter section and a small diameter section from top to bottom, and a fixed die abutting surface 112 is formed between the large diameter section and the small diameter section. The bottom port of the annular machine base 41 can be inserted into the fixed die groove 11 and abut against the fixed die abutting surface 112; the movable die 2 includes an outer sleeve 21 and a core rod 22, and a wide diameter section and a narrow diameter section are formed on the inner wall of the outer sleeve 21, and a movable die abutting 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 movable die abutting surface 211, and the bottom end of the core rod 22 can sequentially pass through the outer sleeve 21 and the annular machine base 41 and be inserted into the fixed die groove 11, and a casting mold cavity is formed between the inner wall of the fixed die groove 11, the inner ring of the annular machine base, the inner wall of the outer sleeve 21 and the core rod 22, and the space between the side port of the outer sleeve 21 away from the fixed die groove 11 and the core rod 22 forms an air outlet 23.

[0032] See also Figure 1 and Figure 2The outer sleeve 21 is provided with three fixing through holes at equal intervals around its central axis, and each fixing through hole is provided in the vertical direction. The top of the fixed mold 1 is provided with three fixing screw holes 12 that are compatible with the three fixing through holes. The user can insert three bolts through the three fixing through holes and screw them to the three fixing screw holes 12 to abut the annular machine base 41 between the fixed mold 1 and the outer sleeve 21, so that the epoxy resin is not easy to leak from the gap between the annular machine base 41 and the fixed mold 1 or the gap between the annular machine base 41 and the outer sleeve 21.

[0033] See also Figure 1 and Figure 2 The encapsulation device 3 includes a glue storage tank 31 and a raised boss 32. The glue storage tank 31 can store glue required for encapsulation, such as epoxy resin. One side of the glue storage tank 31 is connected to the glue injection hole through a pipeline. The raised boss 32 is arranged at the bottom of the glue storage tank 31. The height of the raised boss 32 can be set to enable the height of the bottom of the glue storage tank 31 to be no lower than the height of the air outlet 23 of the encapsulation cavity to be above the ground, so that the epoxy resin in the glue storage tank 31 can fill the entire encapsulation cavity under the action of gravity.

[0034] Through the above-mentioned arrangement, the user can first assemble the fixed mold 1, the movable mold 2 and the annular base, and then insert the core rod 22 into the fixed mold groove 11, so that a potting cavity compatible with the coil and the iron core 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 core rod 22, and finally start the potting device 3 to fill the potting cavity with epoxy resin from the glue filling hole 111 at the bottom of the potting cavity. Since the epoxy resin will gradually fill the potting cavity from bottom to top, the gas in the potting cavity will completely leave the potting cavity from the air outlet 23 at the top of the potting cavity, so that no bubbles will appear inside the finished product obtained by potting, thereby ensuring good potting quality.

[0035] See, in the second embodiment, a slotless stator potting tool also includes a demolding assembly 5 and a lifting platform 6, the demolding assembly 5 includes a rotating device 52, a pair of driving units 51, a connecting pipe 53, a clamping block 54 and an elastic member 55, the rotating device 52 and the potting device 3 are relatively arranged on the top of the lifting platform 6, and two configuration blocks are also provided at the bottom of the lifting platform 6, so that the configuration blocks can be used to increase the stability of the bottom of the lifting platform 6; the above-mentioned lifting platform 6 can be a lifting platform 6 driven by a hydraulic cylinder and adopting a scissors-type structure. Since this type of lifting platform 6 belongs to the prior art, it will not be repeated here.

[0036] See also Figure 3 and Figure 4A pair of driving units 51 are arranged relatively with the fixed mold 1 as the center, and each driving unit 51 includes a fixed mold rod 511, a stopper 512 and a movable mold rod 513. The bottom end of each fixed mold rod 511 is hinged on the outer wall of the fixed mold 1, and each stopper 512 is connected to the top of the fixed mold rod 511. One end of the movable mold rod 513 is hinged to one side of the outer sleeve 21, and the other end of the movable 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 movable mold rod 513 close to 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 movable mold rod 513 will drive the outer sleeve 21 away from the fixed mold 1 and the finished product potted in the fixed mold 1.

[0037] See also Figure 3 and Figure 4 One of the two stopping members 512 is provided with a pin joint 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 are close to each other, the pin joint 5121 can be inserted into the pin sleeve 5122. Connecting holes for plug connection are provided on the pin joint 5121 and the pin sleeve 5122, so that the user can use bolts to pass through the connecting holes provided on the pin joint 5121 and the pin sleeve 5122 and connect them with nuts to connect the two stopping members 512 together, and then the two interconnected stopping 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 also Figure 4 and Figure 5 The glue injection hole 111 includes a vertical flow channel 1111 and a transverse flow channel 1112. The top of the vertical flow channel 1111 is connected to the injection mold cavity, and the bottom of the vertical flow channel 1111 is connected to one end of the transverse flow channel 1112. The other end of the transverse 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 transverse flow channel 1112 and a receiving groove is opened at the end. The clamping block 54 is arranged in the receiving groove. The elastic member 55 is a compression spring, which is arranged between the clamping block 54 and the groove wall of the receiving groove. A clamping hole that matches the clamping block 54 is provided on the inner wall of the horizontal flow channel 1112; a glue hole leading to the inside of the tube is also provided on the body of the connecting tube 53, and glue cutting heads 531 are provided on the two hole walls extending along the length direction of the horizontal flow channel 1112 in the glue hole. The user can insert the pipe of the glue storage tank 31 from the end of the connecting tube 53 away from the vertical flow channel 1111 into the connecting tube 53, so that the epoxy resin in the glue storage tank 31 can pass through the connecting tube 53 and the glue hole in sequence and enter the vertical flow channel 1111.

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

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

[0041] The demoulding sequence of a slotless stator potting tool provided in the present application is: After the potting is completed, the user can first pull out the core rod 22 from the finished product obtained by potting, then remove the bolts in all the fixing screw holes 12, and then pull the ends of the two fixed mold rods 511 away from the fixed mold 1 closer to each other, so that the outer sleeve 21 can be separated from the finished product obtained by potting and move away from the fixed mold 1, and then use bolts and nuts as pins to connect the two stoppers 512 and the connecting pipe 53 with the output shaft 521 of the rotating motor, and then hold the fixed mold 1 and start the rotating device 52 to drive the connecting pipe 53 to rotate in the horizontal flow channel 1112 at a lower speed. When the glue cutting knife head 531 completely passes through the bottom port of the vertical flow channel 1111, the glue cutting knife head 531 will cut off the solidified epoxy resin between the bottom port of the vertical flow channel 1111 and the glue hole, so that the solidified epoxy resin in the horizontal flow channel 1112 is separated from the finished product and will not damage the finished product. The product is prevented from leaving the fixed die groove 11, so that the finished product obtained by pouring can be easily left the fixed die groove 11; when the connecting tube 53 rotates to the position where the notch of the accommodating groove is aligned with the snap-in hole, the snap-in block 54 is driven by the elastic member 55 to move toward the snap-in hole and be inserted into the snap-in hole. At this time, the user can loosen the fixed die 1 and control the rotating device 52 to drive the connecting tube 53 to drive the fixed die 1, the movable die 2, the driving unit 51 and the finished product to rotate at high speed, so that the centrifugal force can be used to separate the finished product from the groove wall of the fixed die groove 11, and the two interconnected stoppers 512 will prevent the finished product from flying out of the fixed die groove 11 from the side port of the outer sleeve 21 away from the fixed die 1, so that the user does not need to use a hammer or other tools to knock the fixed die 1 or the movable die 2 to achieve demolding, thereby achieving quick demolding of the finished product and no damage to the fixed die 1 and the movable die 2 during demolding.

[0042] The implementation principle of a slotless stator potting tool described in this application is: The user can first assemble the fixed mold 1, the movable mold 2 and the annular base, and then insert the core rod 22 into the fixed mold groove 11, so that a potting cavity compatible with the coil and the iron core 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 core rod 22, and finally start the potting device 3 to fill the potting cavity with epoxy resin from the glue filling hole 111 at the bottom of the potting cavity. Since the epoxy resin will gradually fill the potting cavity from bottom to top, the gas in the potting cavity will completely leave the potting cavity from the air outlet 23 at the top of the potting cavity, so that no bubbles will appear inside the finished product obtained by potting, thereby ensuring good potting quality.

[0043] The embodiments of this specific implementation are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. The same components are represented by the same figure marks. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A slotless stator potting tool, used for potting a stator, characterized by: It comprises a fixed mold (1), a movable mold (2) and a potting device (3), wherein the movable mold (2) can be assembled with the fixed mold (1) to form a potting cavity matched with the stator (4) between the two, an air outlet (23) is provided at the top of the potting cavity, and a glue potting hole (111) leading to the outside is provided at the bottom of the potting cavity; The potting device (3) is connected to the glue potting hole (111) and is capable of pouring glue into the potting mold cavity from the glue potting hole (111).

2. The slotless stator potting tool according to claim 1, characterized in that: The fixed mold (1) is provided with a fixed mold groove (11), the glue injection hole (111) is provided on the bottom wall of the fixed mold groove (11), the stator (4) comprises an annular machine base (41) and an iron core and a coil arranged inside the annular machine base (41), a large diameter section and a small diameter section are formed inside the fixed mold groove (11) from top to bottom, a fixed mold abutting surface (112) is formed between the large diameter section and the small diameter section, and the bottom port of the annular machine base (41) can be inserted into the fixed mold groove (11) and abut against the fixed mold abutting surface (112); The movable mold (2) comprises an outer sleeve (21) and a core rod (22); a wide diameter section and a narrow diameter section are formed on the inner wall of the outer sleeve (21); a movable mold abutting 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 movable mold abutting surface (211); the bottom end of the core rod (22) can sequentially pass through the outer sleeve (21) and the annular machine base (41) and be inserted into the fixed mold groove (11); and the encapsulation mold cavity is formed between the inner wall of the fixed mold groove (11), the inner ring of the annular machine base, the inner wall of the outer sleeve (21) and the core rod (22); and the space between a side port of the outer sleeve (21) away from the fixed mold groove (11) and the core rod (22) forms the air outlet (23).

3. The slotless stator potting tool according to claim 2, characterized in that: A fixing through hole is provided on the outer sleeve (21) in the vertical direction, and a fixing screw hole (12) matching the fixing through hole is provided on the top of the fixed mold (1), and a bolt can pass through the fixing through hole and be screwed to the fixing screw hole (12) to abut the annular machine base (41) between the fixed mold (1) and the outer sleeve (21).

4. The slotless stator potting tool according to claim 2, characterized in that: A clearance hole is provided on the bottom wall of the fixed die groove (11), and the connecting terminal (42) of the coil can be inserted into the clearance hole.

5. The slotless stator potting tool according to claim 2, characterized in that: The mold stripping assembly (5) further comprises a demoulding assembly (5), wherein the demoulding assembly (5) comprises a pair of driving units (51) and a rotating device (52), wherein the pair of driving units (51) are arranged opposite to each other with the fixed mold (1) as the center, wherein the driving unit (51) comprises a fixed mold rod (511), a stopper (512) and a movable mold rod (513), wherein the bottom end of the fixed mold rod (511) is hinged on the outer side wall of the fixed mold (1), the stopper (512) is connected to the top end of the fixed mold rod (511), one end of the movable mold rod (513) is hinged to one side of the outer sleeve (21), and the other end of the movable mold rod (513) is hinged to the rod body of the fixed mold rod (511); The ends of the two fixed mold rods (511) that are 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 potted in the fixed mold (1), and the two stoppers (512) can be connected to each other and prevent the finished product from leaving the fixed mold groove (11) from a side port of the outer sleeve (21) that is away from the fixed mold (1); The rotating device (52) is detachably connected to one side of the fixed mold (1) and is capable of driving the fixed mold (1) to drive the movable 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).

6. The slotless stator potting tool according to claim 5, characterized in that: It also comprises a lifting platform (6), on which the rotating device (52) and the potting device (3) are both arranged.

7. The slotless stator potting tool according to claim 6, characterized in that: A counterweight block (61) is provided at the bottom of the lifting platform (6).

8. The slotless stator potting tool according to claim 5, characterized in that: The demoulding assembly (5) further comprises a connecting pipe (53) and a clamping block (54); the glue injection hole (111) comprises a vertical flow channel (1111) and a transverse flow channel (1112); the top of the vertical flow channel (1111) is in communication with the injection mold cavity; the bottom of the vertical flow channel (1111) is in communication with one end of the transverse flow channel (1112); the other end of the transverse flow channel (1112) extends to the side wall of the fixed mold (1) and is formed with an opening; one end of the connecting pipe (53) is inserted into the vertical flow channel (1111) and the bottom of the vertical flow channel (1111) is in communication with one end of the transverse flow channel (1112); The clamping block (54) is provided in the transverse flow channel (1112) and at the end port. A clamping hole matching the clamping block (54) is provided on the inner wall of the transverse flow channel (1112). One end of the connecting tube (53) away from the clamping block (54) is detachably connected to the rotating device (52). The clamping block (54) can be inserted into the clamping hole and abut against the inner wall of the clamping hole, so that the rotating device (52) can drive the fixed mold (1) to rotate via the connecting tube (53).

9. The slotless stator potting tool according to claim 8, characterized in that: The connecting tube (53) is also provided with a glue hole leading to the inside of the tube, and the potting device (3) can be connected to an end of the connecting tube (53) away from the clamping block (54) and allow glue to sequentially pass through the connecting tube (53) and the glue hole into the vertical flow channel (1111).

10. The slotless stator potting tool according to claim 9, characterized in that: The demoulding assembly (5) further comprises an elastic member (55); a receiving groove is provided at one end of the connecting pipe (53) inserted into the transverse flow channel (1112); the clamping block (54) is arranged in the receiving groove; and the elastic member (55) is arranged between the clamping block (54) and the groove wall of the receiving groove; A glue cutting knife head (531) is provided on the hole wall of the glue passage hole. When the connecting tube (53) rotates, the glue cutting knife head (531) can pass through the bottom port of the vertical flow channel (1111) and cut off the solidified glue between the port and the glue passage hole. After the glue cutting knife head (531) completely passes through the bottom port of the vertical flow channel (1111), the notch of the accommodating groove is aligned with the clamping hole, and the elastic member (55) can apply a force to the clamping block (54) to approach the clamping hole and insert one end of the clamping block (54) into the clamping hole.

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