CN114679024B

CN114679024B - Tool for packaging motor stator and motor stator packaging method

Info

Publication number: CN114679024B
Application number: CN202210595633.6A
Authority: CN
Inventors: 谢洪生; 徐明日
Original assignee: Shenyang Vycon New Energy Technology Co ltd
Current assignee: Shenyang Vycon New Energy Technology Co ltd
Priority date: 2022-05-30
Filing date: 2022-05-30
Publication date: 2022-08-19
Anticipated expiration: 2042-05-30
Also published as: CN114679024A

Abstract

The invention discloses a tool for packaging a motor stator and a motor stator packaging method, wherein the tool for packaging the motor stator comprises a mandrel, a first packaging assembly and a second packaging assembly, wherein the mandrel is arranged at the axis of the motor stator in a penetrating manner; the first packaging assembly comprises a first die, the inner side wall of the first die is hermetically connected with the outer side surface of the iron core of the motor stator, and a feeding hole is formed in the side wall of the first die; the second packaging assembly comprises a second mold, the inner side wall of the second mold is connected with the outer side face of the iron core of the motor stator in a sealing mode, and a material overflowing opening is formed in the side wall of the second mold. From this, through the commonality that adopts split type frock structure promotion that can be very big to be used for the frock of motor stator encapsulation, overall structure is simple not only, and the equipment between motor stator and the encapsulation frock is more convenient, moreover to the motor stator of different grade type and size, adopts the same structure all can realize the same encapsulation effect to greatly reduced the cost of manufacturing and designing.

Description

Tool for packaging motor stator and motor stator packaging method

Technical Field

The invention relates to the technical field of motors, in particular to a tool for motor stator packaging and a motor stator packaging method.

Background

The motor stator generally comprises components such as a stator winding and a stator core, and in some severe environments, the stator winding of the motor stator is easily affected by the severe environments, so that the problems of reduction of insulation strength, increase of leakage current of the stator winding, reduction of service life of the stator winding and the like occur. In order to solve the problem, epoxy resin materials with high thermal conductivity are adopted to carry out insulation packaging on a stator winding at present, the packaging can be carried out in a special packaging tool, the existing packaging tool generally adopts a vertical cavity structure, in order to ensure the packaging quality of the epoxy resin materials, the transverse size of the vertical cavity is generally the same as that of a motor stator, but as the thermal conductivity of the epoxy resin materials is increased, the viscosity is increased, the flowability is poor, and the fusion between the epoxy resin materials and the stator is influenced. Therefore, different packaging tools need to be designed in a matching mode according to the sizes or structures of different motor stators, the universality is poor, and the packaging cost is extremely high.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides the tool for packaging the motor stator, and the tool for packaging the motor stator forms a horizontal packaging structure through a split type packaging mold, so that the packaging quality of the motor stator is improved, and the universality of a packaging device is improved.

The invention further provides a motor stator packaging method.

The tooling for packaging the motor stator according to the embodiment of the first aspect of the invention comprises

The mandrel is used for penetrating the axis of the motor stator;

the first packaging assembly comprises a first die, the first die comprises a first side plate and a first pipe fitting, the first side plate is arranged on one side of the mandrel, one end of the first pipe fitting is fixedly connected with the first side plate, the inner side wall of the other end of the first pipe fitting is connected with the outer side surface of the iron core of the motor stator in a sealing mode, a feed inlet is formed in the side wall of the first pipe fitting, the first side plate, the first pipe fitting, the peripheral wall of the mandrel and the end portion of the iron core of the motor stator jointly enclose a first cavity, a first concave portion is formed in the inner side wall of the first pipe fitting, and the first concave portion is clamped at the end portion of the iron core on one side of the motor stator; and

the second encapsulation subassembly, the second encapsulation subassembly includes the second mould, the second mould includes second curb plate and second pipe fitting, the second curb plate is located the opposite side of dabber, the one end of second pipe fitting with one side of second curb plate is connected, the inside wall of the other end with motor stator's iron core lateral surface sealing connection, be equipped with the discharge gate on the lateral wall of second pipe fitting, the second curb plate the second pipe fitting the periphery wall of dabber with motor stator's iron core tip encloses jointly and closes out the second cavity, be equipped with the second depressed part on the inside wall of second pipe fitting, the card of second depressed part is located motor stator's opposite side iron core tip.

From this, through the commonality that adopts horizontal components of a whole that can function independently encapsulation frock structure promotion that can be very big to be used for the frock of motor stator encapsulation, overall structure is simple not only, and the equipment between motor stator and the encapsulation frock is more convenient, moreover to the motor stator of different grade type and size, adopts the same structure all can realize the same encapsulation effect to greatly reduced the cost of manufacturing and designing.

According to some embodiments of the invention, the first package assembly comprises: a first end plate connected to the first side plate; and/or

The second package assembly includes: and the second end plate is connected to the second side plate, and a screw rod is arranged between the second end plate and the first end plate.

According to some embodiments of the present invention, a first screw hole is formed on the first end plate, and one end of the screw rod is connected in the first screw hole; and/or

And a second screw hole is formed in the second end plate, and the other end of the screw rod is connected into the second screw hole.

According to some embodiments of the present invention, a first through hole is formed on the first side plate, and one end of the mandrel is embedded in the first through hole; and/or

And a second through hole is formed in the second side plate, and the other end of the mandrel is embedded in the second through hole.

According to some embodiments of the invention, a first caulking groove is formed on the inner side wall of the first through hole, a first sealing ring is arranged in the first caulking groove, and the first sealing ring is in close contact with the side wall of the mandrel; and/or

And a second caulking groove is formed in the inner side wall of the second through hole, a second sealing ring is arranged in the second caulking groove, and the second sealing ring is in close contact with the other end of the mandrel.

According to some embodiments of the invention, a third through hole is formed in the second end plate, and a pull ring is arranged on an end portion, close to the second end plate, of the mandrel, and the pull ring penetrates through the third through hole.

According to some embodiments of the present invention, a core rod is disposed in the core shaft, a limiting groove is disposed on one side of the core shaft close to the first side plate, a limiting plate is disposed on one side end of the core rod, and the limiting plate is embedded in the limiting groove.

According to some embodiments of the present invention, a third caulking groove is formed on an inner side wall of the first recessed portion, a third sealing ring is arranged in the third caulking groove, and the third sealing ring is in close contact with an outer side surface of an iron core of the motor stator; and/or

And a fourth caulking groove is formed in the inner side wall of the second sunken part, a fourth sealing ring is arranged in the fourth caulking groove, and the fourth sealing ring is in close contact with the outer side surface of the iron core of the motor stator.

According to some embodiments of the invention, a first notch is arranged on the first pipe fitting, a first fixing block is arranged at the first notch, and the feeding hole is arranged on the first fixing block; and/or

The second pipe fitting is provided with a second notch, a second fixing block is arranged at the second notch, and the overflow port is arranged on the second fixing block.

According to some embodiments of the present invention, a first groove is formed in the first fixing block, a first blocking member is embedded in the first groove, a first material opening is formed in the first blocking member, and the first material opening is communicated with the material inlet; and/or

The second fixed block is provided with a second groove, a second plugging piece is arranged in the second groove, a second material opening is formed in the second plugging piece, and the second material opening is communicated with the flash opening.

The motor stator packaging method comprises the tool for motor stator packaging, wherein the method comprises the following steps:

after a mandrel of the tool is kept in a horizontal state, controlling the tool to be in a first air pressure environment, wherein the air pressure of the first air pressure environment is smaller than the standard atmospheric pressure;

continuously pouring epoxy resin materials into the feeding hole until the epoxy resin materials overflow from the flash hole;

controlling the air pressure of the first air pressure environment to continuously rise until the air pressure of the first air pressure environment reaches the standard atmospheric pressure;

and taking out the tool when the liquid level of the epoxy resin material at the feed inlet and the liquid level of the epoxy resin material at the flash port are at the same level.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a schematic structural diagram of a tooling for motor stator packaging according to an embodiment of the invention;

FIG. 2 is an enlarged schematic view at A of FIG. 1 according to an embodiment of the present invention;

FIG. 3 is a schematic cross-sectional view of FIG. 1 according to an embodiment of the present invention;

FIG. 4 is an exploded view of the tool of FIG. 1 with the feed port and the flash at the bottom and the first and second block pieces omitted, according to an embodiment of the invention;

FIG. 5 is a cross-sectional view of a first mold and a second mold according to an embodiment of the present invention;

FIG. 6 is an enlarged schematic view at B of FIG. 5 according to an embodiment of the present invention;

fig. 7 is an enlarged schematic view at C in fig. 5 according to an embodiment of the present invention.

Reference numerals are as follows:

100. the tooling is used for packaging the motor stator;

1. a mandrel; 11. a pull ring; 12. drawing the core rod; 13. a limiting plate; 14. a limiting groove;

2. a first package assembly; 21. a first mold; 22. a first end plate; 221. a first screw hole; 23. a first cavity;

3. a second package assembly; 31. a second mold; 32. a second end plate; 321. a second screw hole; 322. a third through hole; 33. a second cavity;

4. a motor stator;

5. a first side plate; 51. a first through hole; 511. a first caulking groove; 512. a first seal ring;

6. a first pipe member; 61. a feed inlet; 62. a first recess; 621. a third caulking groove; 622. a third seal ring; 63. a first notch; 64. a first fixed block; 641. a first groove; 65. a first blocking piece; 651. a first material port;

7. a second side plate; 71. a second through hole; 711. a second caulking groove; 712. a second seal ring;

8. a second pipe member; 81. an overflow port; 82. a second recess; 821. a fourth caulking groove; 822. a fourth seal ring; 83. a second notch; 84. a second fixed block; 841. a second groove; 85. a second blocking member; 851. a second material port;

9. a screw.

Detailed Description

Embodiments of the present invention will be described in detail below, the embodiments described with reference to the drawings being illustrative, and the embodiments of the present invention will be described in detail below.

A tool 100 for motor stator packaging according to an embodiment of the present invention is described below with reference to fig. 1-7.

Referring to fig. 1, 3, 4 and 5, a tooling 100 for motor stator packaging according to an embodiment of the present invention generally includes: the core shaft structure comprises a core shaft 1, a first packaging assembly 2 and a second packaging assembly 3, wherein the first packaging assembly 2 and the second packaging assembly 3 are arranged at two ends of the core shaft 1, the core shaft 1 is used for penetrating through the axis of a motor stator 4, the first packaging assembly 2 comprises a first die 21, the first die 21 comprises a first side plate 5 and a first pipe fitting 6, the first side plate 5 is arranged on one side of the core shaft 1, one end of the first pipe fitting 6 is fixedly connected with the first side plate 5, the inner side wall of the other end is in sealing connection with the outer side face of an iron core of the motor stator 4, and a feeding hole 61 is formed in the side wall of the first pipe fitting 6; the second encapsulation component 3 comprises a second die 31, the second die 31 comprises a second side plate 7 and a second pipe fitting 8, the second side plate 7 is arranged on the other side of the mandrel 1, one end of the second pipe fitting 8 is connected with one side of the second side plate 7, the inner side wall of the other end is connected with the outer side face of the iron core of the motor stator 4 in a sealing mode, and a material overflow port 81 is formed in the side wall of the second pipe fitting 8.

Specifically, general motor stator 4 includes the iron core and around locating the coil on the iron core, is equipped with the wire casing on the inside wall of iron core to be used for the coiling coil, the coil coiling sets up to the both sides tip protrusion of iron core respectively behind the iron core, and when spindle 1 was located to motor stator 4's iron core cover, for the precision of encapsulation, this spindle 1's size was the same with motor stator 4's iron core inside wall size.

Be equipped with hollow cavity in the first mould 21, when one side of dabber 1 was located to first mould 21, the tip of dabber 1 stretched into in this cavity to enclose a relative confined cyclic annular cavity by first curb plate 5, first pipe fitting 6, the periphery wall of dabber 1 and motor stator 4's iron core tip jointly, for the convenience of distinguishing, establish this cyclic annular cavity into first cavity 23, at this moment, the coil of iron core one end is equivalent to inlay and locates in this confined first cavity 23. Similarly, a hollow cavity is also arranged in the second mold 31, when the second mold 31 is arranged on the other side of the mandrel 1, the end of the mandrel 1 also extends into the cavity, and a relatively closed annular cavity is enclosed by the second side plate 7, the second pipe fitting 8, the outer peripheral wall of the mandrel 1 and the end of the iron core of the motor stator 4, and is set as the second cavity 33, at this time, the coil at one end of the iron core is equivalently embedded in the closed second cavity 33.

When encapsulating, in pouring into first cavity 23 gradually the epoxy material through feed inlet 61, at this moment, because be equipped with the wire casing on motor stator 4's the iron core, can the first cavity 23 of UNICOM and second cavity 33 through this wire casing to make the epoxy material enter into in the second cavity 33 from first cavity 23, when the epoxy material is filled up this first cavity 23 and second cavity 33, the epoxy material can be followed flash port 81 and spilled over, stops to pour the material immediately.

Compare with integral encapsulation frock structure among the prior art, the split type structure has been adopted in this embodiment, locate motor stator 4 iron core's both sides respectively with first encapsulation subassembly 2 and second encapsulation subassembly 3, at first, can simplify the structure of frock body through this setting, need not to place motor stator 4 and encapsulate in fixed encapsulation cavity, can not only improve operating efficiency, avoid motor stator 4 to be difficult to place in encapsulation cavity, and can also promote the quality of encapsulation, avoid appearing the condition that the epoxy material adheres to on the medial surface and/or the lateral surface of iron core, in case the epoxy material adheres to on the iron core, still need additionally carry out the work of cleaing away after the encapsulation, this can seriously influence the whole progress and the efficiency of packaging technology.

Secondly, the dimensions of the iron cores of the motor stators 4 of different types are different, for example: the length of iron core or the path length's of iron core difference, it is concrete, if the length of iron core is different, because first mould 21 and second mould 31 locate the both sides of iron core respectively, a cavity for the encapsulation mainly sets up at first mould 21, between the tip of second mould 31 and iron core, length irrelevant with the iron core, thereby need not to consider motor stator 4's length size, need not to design the not encapsulation frock of co-altitude to motor stator 4 of different length sizes, and then the commonality is good, avoid designing the encapsulation frock of different specifications according to motor stator 4 length of different length, greatly reduced manufacturing cost. Similarly, for the radial lengths of different iron cores, the packaging tools with different diameters do not need to be redesigned, and only the first die 21 and the second die 31 with the corresponding radial lengths are adopted, so that the manufacturing cost is greatly reduced.

Further, the conventional motor stator 4 is generally cylindrical in shape, but in particular, the stator core may be a truncated cone, for example: the stator core is used as the stator core of the conical rotor three-phase asynchronous motor for hoisting equipment. For the circular truncated cone-shaped iron core, the two ends of the iron core are different in size, so that the cylindrical packaging tool cannot be directly used on the circular truncated cone-shaped motor stator 4, the corresponding tool structure needs to be specially customized, and tools with different sizes need to be designed according to different sizes. However, in this embodiment, according to the radial length of the two ends of the circular truncated cone-shaped core, the first die 21 and the second die 31 with different radial lengths are replaced to meet the packaging requirements of different sizes, so that an additional design of a new packaging tool structure is avoided, the universality of the tool 100 for packaging the motor stator in this embodiment is further improved, and the manufacturing cost is greatly reduced.

Still further, compare with the vertical frock structure among the prior art, the frock 100 for motor stator encapsulation in this embodiment is owing to locate feed inlet 61 on the lateral wall of first pipe fitting 6 of first mould 21, thereby need place this frock level use when the encapsulation, dabber 1 is in the state of horizontal placement this moment, thereby when filling, even the epoxy material has produced the bubble in the frock, because this frock 100 for motor stator encapsulation is whole highly will be less than the height of corresponding vertical frock structure, thereby the route that the bubble upwards marched has been shortened greatly in other words, and then more be favorable to the bubble that exists in the epoxy material to rise, the effusion, reduce the bubble in the epoxy material after the encapsulation, avoid influencing the insulation and the heat dissipation of motor.

From this, not only overall structure is simple through adopting split type frock structure, and the equipment between motor stator 4 and the encapsulation frock is more convenient moreover, to the motor stator 4 of different grade type and size, the structure that adopts the same design all can realize the same encapsulation effect, can greatly promote the commonality that is used for the frock 100 of motor stator encapsulation to greatly reduced the cost of manufacturing and designing.

In some embodiments of the present invention, as shown in fig. 1, the first packing member 2 comprises a first end plate 22, the first end plate 22 is connected to the first side plate 5 and/or the second packing member 3 comprises a second end plate 32, the second end plate 32 is connected to the second side plate 7, wherein a screw 9 is provided between the second end plate 32 and the first end plate 22. Specifically, in order to facilitate the fixed first encapsulation subassembly 2 and the second encapsulation subassembly 3 to be equipped with screw 9 between first encapsulation subassembly 2 and second encapsulation subassembly 3, can form firm whole with first mould 21, second mould 31 and dabber 1 through this screw 9, need come first encapsulation subassembly 2 and the second encapsulation subassembly 3 of relatively fixed with the help of external force when avoiding encapsulating, promote and use convenience and reliability, be convenient for simultaneously shift or transport after the equipment finishes.

Set up first encapsulation subassembly 2 into split type structure, can be when the motor stator 4 of the different footpaths of encapsulation length, need not to change the structure of first terminal plate 22, only change the structure of first mould 21 can to further promote the commonality of first encapsulation subassembly 2, reduce the encapsulation cost. In the same way, the second packaging component 3 can be arranged to be of a split structure, so that when the motor stator 4 with different diameters is packaged, the structure of the second end plate 32 does not need to be replaced, and only the structure of the second mold 31 needs to be replaced, so that the universality of the second packaging component 3 is improved, and the packaging cost is reduced.

Further, on the basis of the above-mentioned embodiment, as shown in fig. 4, the first end plate 22 is provided with a first screw hole 221, one end of the screw rod 9 is connected in the first screw hole 221 and/or the second end plate 32 is provided with a second screw hole 321, and the other end of the screw rod 9 is connected in the second screw hole 321. Specifically, when the first end plate 22 is provided with the first screw hole 221, the screw rod 9 penetrates through the first screw hole 221, and the nut can be adopted to fix the first screw hole 221 on one side, and at this time, the other end of the screw rod 9 can be integrally arranged on the second end plate 32, so that the assembling efficiency of the tool assembly can be improved. Similarly, when the second end plate 32 is provided with a screw hole, the first end plate 22 can also be provided with an integrated screw 9, so as to improve the assembly efficiency.

More preferably, when all setting up the screw on first end plate 22 and the second end plate 32, wear to locate in the screw respectively at the both ends that are equivalent to screw 9 to through this split type structure, also the commonality of further promotion frock, can set first end plate 22 and second end plate 32 to the same structure promptly, the effectual manufacturing and the replacement cost that reduces encapsulation frock.

In some embodiments of the present invention, as shown in fig. 5, a first through hole 51 is formed on the first side plate 5, one end of the mandrel 1 is embedded in the first through hole 51 and/or a second through hole 71 is formed on the second side plate 7, and one end of the mandrel 1 is embedded in the second through hole 71, specifically, when one end of the mandrel 1 is embedded in the first through hole 51, the mandrel 1 and the first side plate 5 are in close contact, so as to prevent epoxy resin material from overflowing from the connecting seam to affect the precision of the motor stator 4 after being packaged, thereby reducing the secondary processing process and improving the working efficiency of the packaging process. Similarly, when the one end of dabber 1 was inlayed and is located in second through-hole 71, with in close contact with between dabber 1 and the second curb plate 7 to avoid epoxy material to spill over from this joint, influence the precision behind the encapsulation of motor stator 4, and then reduce secondary treatment's process, promote the work efficiency of encapsulation process.

Further, on the basis of the above embodiment, as shown in fig. 6 and 7, a first caulking groove 511 is provided on an inner side wall of the first through hole 51, a first sealing ring 512 is provided in the first caulking groove 511, and the first sealing ring 512 is in close contact with the side wall of the mandrel 1; and/or a second caulking groove 711 is arranged on the inner side wall of the second through hole 71, a second sealing ring 712 is arranged in the second caulking groove 711, and the second sealing ring 712 is tightly contacted with the other end of the mandrel 1. Specifically, the first sealing ring 512 is arranged in the first through hole 51, so that the sealing performance between the first through hole 51 and the mandrel 1 can be further improved, in order to facilitate limiting the first sealing ring 512, the first caulking groove 511 can be arranged in the first through hole 51, and then the first sealing ring 512 is arranged in the first caulking groove 511, so that the first sealing ring 512 is prevented from falling off and being distorted, and the sealing performance between the mandrel 1 and the first side plate 5 is reduced. Similarly, the principle of the second seal ring 712 disposed between the mandrel 1 and the second through hole 71 is the same as that of the first seal ring 512, and is not described herein again.

In some embodiments of the present invention, as shown in fig. 4, a third through hole 322 is formed on the second end plate 32, a pull ring 11 is formed on an end portion of the mandrel 1 close to the second end plate 32, and the pull ring 11 penetrates through the third through hole 322, wherein the pull ring 11 is arranged to facilitate demolding of the tool 100 for motor stator encapsulation, specifically, when demolding is required after the motor stator 4 is encapsulated, one side of the first encapsulation component 2 is relatively fixed, and then the pull ring 11 is pulled by an external force to drive one side of the second encapsulation component 3 to move, so as to facilitate releasing the mandrel 1 from the axial center of the motor stator 4, and facilitate taking out the motor stator 4.

Further, on the basis of the above-mentioned embodiment, as shown in fig. 3, a core rod 12 is arranged in the core shaft 1, a limiting groove 14 is arranged on one side of the core shaft 1 close to the first side plate 5, a limiting plate 13 is arranged on one side end of the core rod 12, and the limiting plate 13 is embedded in the limiting groove 14, wherein a T-shaped structure is integrally formed by the core rod 12 and the limiting plate 13, then when demolding is performed, the core rod 12 can be pulled by a pull ring 11 to drive the whole core shaft 1 to move, here, the core rod 12 is independently arranged in the core shaft 1 to set the core shaft 1 to be a non-metal material, so that the strength during core pulling acts on the core rod 12, and further, the material of the core shaft 1 is conveniently set to be a material convenient for demolding, and in addition, such a structure is also convenient for reducing the replacement cost when the core shaft 1 is damaged.

In some embodiments of the present invention, as shown in fig. 6 and 7, a first concave portion 62 is disposed on an inner side wall of the first pipe member 6, the first concave portion 62 is configured to be clamped on an end portion of the core on one side of the motor stator 4 and/or a second concave portion 82 is disposed on an inner side wall of the second pipe member 8, and the second concave portion 82 is configured to be clamped on an end portion of the core on the other side of the motor stator 4. Specifically, through set up first depressed part 62 on first pipe fitting 6, be favorable to locating motor stator 4's iron core tip with the spacing card of first pipe fitting 6 on the one hand, play the effect of spacing first mould 21, on the other hand is favorable to strengthening the leakproofness between first pipe fitting 6 and motor stator 4's the iron core, avoids epoxy to expect to spill over from this, influences the quality of encapsulation. Similarly, the second concave portion 82 formed on the second pipe 8 and the first concave portion 62 formed on the first pipe 6 are the same, and will not be described again.

Further, in addition to the above-mentioned embodiments, as shown in fig. 6 and 7, a third caulking groove 621 is further provided on an inner side wall of the first recess portion 62, a third sealing ring 622 is provided in the third caulking groove 621, the third sealing ring 622 is in close contact with an outer side surface of the core of the motor stator 4, and/or a fourth caulking groove 821 is provided on an inner side wall of the second recess portion 82, a fourth sealing ring 822 is provided in the fourth caulking groove 821, and the fourth sealing ring 822 is in close contact with an outer side surface of the core of the motor stator 4. Specifically, set up third sealing washer 622 in first depressed part 62 department, can further promote the leakproofness between the iron core of first depressed part 62 and motor stator 4, simultaneously, for the convenience of spacing third sealing washer 622, can set up third caulking groove 621 in the inside wall department of first depressed part 62, then set up third sealing washer 622 in third caulking groove 621, thereby avoid droing, the distortion of third sealing washer 622 to go the shape, reduce the leakproofness between the iron core of first depressed part 62 and motor stator 4. Similarly, the fourth caulking groove 821 is provided at the second recess 82, and the function of the fourth sealing ring 822 provided in the fourth caulking groove 821 is the same as the function of the third caulking groove 621 and the third sealing ring 622, so that the description thereof is omitted.

In some embodiments of the present invention, as shown in fig. 2 and 4, the first pipe 6 is provided with a first notch 63, the first notch 63 is provided with a first fixing block 64, the feeding port 61 is provided on the first fixing block 64 and/or the second pipe 8 is provided with a second notch 83, the second notch 83 is provided with a second fixing block 84, and the overflow port 81 is provided on the second fixing block 84. Concretely, motor stator 4 is finished by the encapsulation of epoxy material, treat that epoxy material needs to carry out the drawing of patterns after the solidification, because pouring gate department can reserve partial epoxy material through usual, thereby lead to the drawing of patterns difficulty easily, for this reason, assemble in first breach 63 department through first fixed block 64 detachable, can become the size that enlarges feed inlet 61 department mutually, thereby be favorable to motor stator 4 and the drawing of patterns of first mould 21, avoid the problem that the epoxy material protrusion of feed inlet 61 department influences the drawing of patterns. Meanwhile, the action principle of the second notch 83 and the second fixing block 84 arranged on the second pipe 8 is the same as that of the first notch 63 and the first fixing block 64 arranged on the first pipe 6, and the description is omitted here.

It should be noted here that, the first notch 63 is provided on the first pipe 6, when the first notch 63 is not provided with the first fixing block 64, the first notch 63 can be directly used as the feed port 61, and similarly, three second notches 83 are distributed on the second pipe 8 along the pipe wall thereof, the three second notches 83 can be used for three leads penetrating through the motor stator 4, and meanwhile, in order to save the position, one of the second notches 83 (arranged in the same direction as the first notch 63) can be used for providing the second fixing block 84, so that the flash observation is facilitated, and at this time, the other two second notches 83 can be sealed and fixed by using a fixing plate. Of course, if the second fixing block 84 is not disposed in the second notch 83 that is disposed in the same direction as the first notch 63, the second notch 83 can be directly used as the material overflow port 81.

Further, on the basis of the above-mentioned embodiments, as shown in fig. 2 and fig. 4, the first fixing block 64 is provided with the first groove 641, the first groove 641 is embedded with the first blocking piece 65, the first blocking piece 65 is provided with the first port 651, the first port 651 is communicated with the feed port 61 and/or the second fixing block 84 is provided with the second groove 841, the second blocking piece 85 is provided in the second groove 841, the second port 851 is provided on the second blocking piece 85, and the second port 851 is communicated with the flash port 81, wherein according to the scheme of the above embodiment, since the part of the epoxy resin material is usually reserved at the gate, the demolding difficulty is easily caused, the space during demolding can be enlarged by the first fixing block 64, but if the length of the epoxy resin material is large, even if the first fixing block 64 is detached, the demolding is difficult, at this time, by the structure of the first groove 641 and the first blocking piece 65 provided on the first fixing block 64, can become the convex height behind the phase reduction epoxy material solidification, finish the back from feed inlet 61 pouring when the epoxy material promptly, even pouring gate department still remains partial epoxy material, can inwards take out first shutoff piece 65 from first recess 641, thereby will stay the timely getting rid of the epoxy material of depositing in first shutoff piece 65, thereby avoid the complete solidification of this partial epoxy material, and then reduce the height that epoxy material poured on motor stator 4 greatly, be convenient for the smooth drawing of patterns between motor stator 4 and the first mould 21.

Similarly, the operation principle of the second groove 841 and the second blocking piece 85 provided on the second fixing block 84 is the same as that of the first groove 641 and the first blocking piece 65, and thus the description thereof is omitted. But the difference is that the second pipe 8 is also provided with a lead of the motor stator 4, so that the separately designed second blocking piece 85 can be applied to the motor stator 4 with different lead diameters, and the second blocking piece 85 with different sizes of the second port 851 can be directly replaced, thereby greatly enhancing the universality and having good interchangeability.

The motor stator packaging method provided by the embodiment of the invention comprises the tool 100 for motor stator packaging of the embodiment, wherein the method comprises the following steps:

after a mandrel 1 of the tool is kept in a horizontal state, controlling the tool to be in a first air pressure environment, wherein the air pressure of the first air pressure environment is smaller than the standard atmospheric pressure;

continuously pouring epoxy resin materials into the feeding port 61 until the epoxy resin materials overflow from the overflow port 81;

controlling the air pressure of the first air pressure environment to be increased continuously until the air pressure of the first air pressure environment reaches the standard atmospheric pressure;

and taking out the tool when the height of the liquid level of the epoxy resin material at the feed port 61 and the liquid level of the epoxy resin material at the flash port 81 are at the same level.

Specifically, because current encapsulation frock is mostly vertical structure, the mode of epoxy material from the upper portion pouring of frock promptly, but the epoxy material is along with the increase of material thermal conductivity ability, viscosity also can increase, and mobility is poor to make epoxy material be difficult to abundant and the stator fuse when the pouring, the bubble that the pouring produced simultaneously also is difficult to discharge, seriously influences motor insulation and heat dissipation. In this embodiment, carry out the level with the frock and place the use, can be so that dabber 1 is in the state that the level was placed to make the filling cavity highly be less than the filling cavity height of vertical frock far away, can reduce the distance that the bubble rebound and diffusion greatly, and then more be favorable to the bubble in the epoxy material to volatilize, reduce the bubble in the epoxy material after the encapsulation, ensure insulating nature and the thermal diffusivity of motor.

On the basis, in order to facilitate the overflow of bubbles in the epoxy resin material, the tool can be in a vacuum state and the epoxy resin material can be poured in the vacuum state, specifically,

s1, before pouring, reducing the air pressure of the first air pressure environment to 30pa, and keeping for one hour; thereby being convenient for abundant complete exhaust of the air in the frock after will assembling.

S2, during pouring, the air pressure of the first air pressure environment is kept at 300pa until the epoxy resin material overflows from the overflow port 81;

s3, adjusting the pressure of the first atmospheric pressure to 5000pa, and keeping for 5-10 minutes;

and S4, ascending the air pressure of the first air pressure environment in a step mode according to 1000pa, 3000pa, 5000pa and 101325pa respectively, and keeping the air pressure at each air pressure value for 5-10 minutes respectively.

The air pressure operation of the steps S2 to S4 can discharge the generated bubbles as much as possible, thereby ensuring that the resin material can be completely fused with each part of the stator into a whole and no bubbles are left in the epoxy resin material.

Further, because the mobility of epoxy can be influenced to the temperature, consequently, in order to facilitate the efficiency of promotion epoxy when the pouring, and the overflow of the bubble of also being convenient for of on the other hand, when pouring, can keep the temperature of first atmospheric pressure environment at 80 to 90 degrees to promote epoxy's mobility.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. The utility model provides a frock for motor stator encapsulation which characterized in that includes:

the mandrel is horizontally arranged and penetrates through the axis of the motor stator;

the first packaging assembly comprises a first die, the first die comprises a first side plate and a first pipe fitting, the first side plate is arranged on one side of the mandrel, one end of the first pipe fitting is fixedly connected with the first side plate, the inner side wall of the other end of the first pipe fitting is hermetically connected with the outer side surface of the iron core of the motor stator, a feed inlet is formed in the side wall of the first pipe fitting, the first side plate, the first pipe fitting, the outer peripheral wall of the mandrel and the end part of the iron core of the motor stator jointly enclose a first cavity, a first concave part is formed in the inner side wall of the first pipe fitting, and the first concave part is clamped at the end part of the iron core on one side of the motor stator; and

the second packaging assembly comprises a second die, the second die comprises a second side plate and a second pipe fitting, the second side plate is arranged on the other side of the mandrel, one end of the second pipe fitting is connected with one side of the second side plate, the inner side wall of the other end of the second die fitting is connected with the outer side surface of the iron core of the motor stator in a sealing mode, a material overflow port is formed in the side wall of the second pipe fitting, the second side plate, the second pipe fitting, the outer peripheral wall of the mandrel and the end portion of the iron core of the motor stator jointly enclose a second cavity, a second concave portion is formed in the inner side wall of the second pipe fitting, and the second concave portion is clamped on the end portion of the iron core of the other side of the motor stator.

2. The tooling for motor stator packaging according to claim 1, wherein the first packaging assembly comprises: a first end plate connected to the first side plate; and/or

3. The tool for packaging the motor stator according to claim 2, wherein a first screw hole is formed in the first end plate, and one end of the screw is connected into the first screw hole; and/or

4. The tool for packaging the motor stator according to claim 1, wherein a first through hole is formed in the first side plate, and one end of the mandrel is embedded in the first through hole; and/or

5. The tool for packaging the motor stator according to claim 4, wherein a first caulking groove is formed in the inner side wall of the first through hole, a first sealing ring is arranged in the first caulking groove, and the first sealing ring is in close contact with the side wall of the mandrel; and/or

6. The tooling for motor stator packaging according to claim 3, wherein a third through hole is formed in the second end plate, a pull ring is arranged on the end portion, close to the second end plate, of the mandrel, and the pull ring penetrates through the third through hole.

7. The tool for packaging the motor stator according to claim 6, wherein a core rod is arranged in the core shaft, a limiting groove is formed in one side, close to the first side plate, of the core shaft, a limiting plate is arranged at one side end of the core rod, and the limiting plate is embedded in the limiting groove.

8. The tool for packaging the motor stator according to claim 1, wherein a third caulking groove is formed in the inner side wall of the first recessed portion, a third sealing ring is arranged in the third caulking groove, and the third sealing ring is in close contact with the outer side face of an iron core of the motor stator; and/or

9. The tool for packaging the motor stator according to claim 1, wherein a first notch is formed in the first pipe fitting, a first fixing block is arranged at the first notch, and the feed inlet is formed in the first fixing block; and/or a second notch is arranged on the second pipe fitting, a second fixed block is arranged at the second notch, and the overflow port is arranged on the second fixed block.

10. The tool for packaging the motor stator according to claim 9, wherein a first groove is formed in the first fixing block, a first plugging piece is embedded in the first groove, a first material opening is formed in the first plugging piece, and the first material opening is communicated with the material inlet; and/or

11. A motor stator packaging method, which is used for the tool for motor stator packaging according to any one of claims 1-10, and comprises the following steps:

controlling the air pressure of the first air pressure environment to be continuously increased until the air pressure of the first air pressure environment reaches the standard atmospheric pressure;

and taking out the tool when the height of the liquid level of the epoxy resin material at the feed port is at the same level as the liquid level of the epoxy resin material at the flash port.