CN115765252A

CN115765252A - Annular winding, linear motor rotor structure, linear motor and manufacturing process

Info

Publication number: CN115765252A
Application number: CN202211373963.7A
Authority: CN
Inventors: 司纪凯; 聂瑞; 陈桂贤; 梁静; 陈延; 彭金柱; 于坤杰; 王东署; 李森; 吕蒙琦; 魏彦企
Original assignee: Henan Kaiyuan Zhiqu Electromechanical Equipment Co ltd; Zhengzhou University
Current assignee: Henan Kaiyuan Zhiqu Electromechanical Equipment Co ltd; Zhengzhou University
Priority date: 2022-11-04
Filing date: 2022-11-04
Publication date: 2023-03-07

Abstract

The invention provides a ring winding, a linear motor rotor structure, a linear motor and a manufacturing process, wherein a winding wire clamp with a polygonal structure is arranged, each edge of the winding wire clamp is provided with a boss, the bosses on a plurality of edges are connected to form a coil bearing surface, and the bottom of the coil bearing surface axially extends towards two sides to form opposite limiting blocks; meanwhile, winding wire clamps are used for winding the coils on the coil bearing surfaces of the winding wire clamps in an annular mode to form prefabricated windings, and the outer sides of the prefabricated windings are evenly coated with potting adhesive layers; the positioning action of the limiting block of the winding wire clamp is utilized to perform winding, packaging and assembling, the slot fullness rate and the regularity of the main surface of the winding unit are ensured, and the stability of the winding quality is improved; the arrangement of the potting adhesive layer can further ensure the consistency of the specifications of the annular winding, and can also perform heat dissipation and insulation in the operation process of the motor.

Description

Annular winding, linear motor rotor structure, linear motor and manufacturing process

Technical Field

The invention relates to a linear motor, in particular to a ring winding, a linear motor rotor structure, a linear motor and a manufacturing process.

Background

The permanent magnet linear synchronous motor has the advantages of high thrust density, fast dynamic response, high positioning precision and the like, and has wide application prospect. The permanent magnet linear synchronous motor comprises a stator and a rotor, a motor air gap is formed between the rotor and the stator, and the rotor can linearly move relative to the stator and is arranged on a cross section perpendicular to the moving direction of the rotor. In specific application, the annular winding has the advantages of no cross of the end part, small occupied space and good mechanical strength because the coil plane is vertical to the motion direction of the motor, the permanent magnet linear synchronous motor obtains wide attention and application, and can be divided into an outer winding type and an inner winding type according to the relative position of the annular winding and a magnet; the outer winding type annular winding is arranged on the rotor, and the magnet is arranged on the stator; the magnet of the inner winding type is disposed on the mover, and the ring winding is disposed on the stator.

In the actual production and processing process of the motor, the uniform air gap between the stator and the rotor of the motor is a necessary condition for ensuring the good running of the motor, and the air gap between the stator and the rotor of the motor is essentially generated by the matching of the annular winding and the magnet.

In the manufacturing process of the annular winding, when the annular winding is wound, the winding is required to be tightly arranged and have proper winding pretightening force, so that reasonable slot filling rate is ensured, and equipment such as a motor and the like has good output performance; however, the conventional ring winding is mostly performed by manual winding, and the enameled wire is not provided with enough tension, so that reasonable slot filling rate and winding flatness rate cannot be guaranteed.

Meanwhile, in order to prevent interphase leakage current and current from crossing phases, interphase insulation paper is padded between the winding ends of the traditional linear motor to strengthen the insulation performance between the phases; after the interphase insulating paper is filled, sealant needs to be filled into the linear motor, so that the heat dissipation effect is achieved, and the process is complex.

In order to solve the above problems, people are always seeking an ideal technical solution.

Disclosure of Invention

The invention aims to overcome the defects of the prior art, and provides a ring winding, a linear motor rotor structure, a linear motor and a manufacturing process.

In order to achieve the purpose, the technical scheme adopted by the invention is as follows: the present invention provides a toroid winding comprising:

the winding wire clamp is of a polygonal structure, each edge of the polygonal structure is provided with a boss, the bosses on the edges are connected to form a coil bearing surface, and the bottom of the coil bearing surface axially extends towards two sides to form opposite limiting blocks;

the coil is annularly wound on the coil bearing surface of the winding wire clamp;

and the potting adhesive layer is uniformly coated around the coil, and the edges of two sides of the potting adhesive layer are respectively vertically aligned with two sides of the coil bearing surface.

The invention also provides a manufacturing process of the ring winding, which comprises a winding step and an encapsulating step, wherein the winding step comprises the following steps: a left clamp and a right clamp are respectively installed on two sides of the winding wire clamp, and the left clamp, the winding wire clamp and the right clamp are fixedly connected through a locking assembly, so that a winding groove is formed by the right side wall of the left clamp, the left side wall of the right clamp and a coil bearing surface of the winding wire clamp;

winding a coil on the coil bearing surface to fill the winding slot, stopping winding until the height of the coil in the winding slot reaches a first preset height, and opening the locking assembly to disassemble the left clamp and the right clamp to obtain a prefabricated winding;

the winding wire clamp is of a polygonal structure with the same number of sides as the supporting frame, each side of the polygonal structure is provided with a boss, the bosses on the sides are connected to form a coil bearing surface, and the bottom of the coil bearing surface axially extends towards two sides to form opposite limiting blocks; the right side surface of the left clamp is provided with a groove matched with a left limiting block of the winding wire clamp, and the left side surface of the right clamp is provided with a groove matched with a right limiting block of the winding wire clamp;

the potting step includes: respectively installing a left mould and a right mould on the outer side of the prefabricated winding, and tightly connecting the left mould, the prefabricated winding and the right mould through a locking assembly so as to enable the prefabricated winding to be positioned in a sealed cavity formed by the left mould and the right mould;

pouring sealant from a pouring opening of the sealed cavity, stopping pouring sealant when the liquid level of the pouring sealant reaches a second preset height, opening the locking assembly, and detaching the left clamp and the right clamp to obtain the annular winding coated with the pouring sealant layer;

the right die is provided with a first accommodating cavity, and the first accommodating cavity is internally provided with a groove matched with a right limiting block of the winding wire clamp; the left die is provided with a second accommodating cavity, and a groove matched with the left limiting block of the winding wire clamp is formed in the second accommodating cavity; the first accommodating cavity and the second accommodating cavity are matched to form a sealed cavity for accommodating the prefabricated winding; the right mould or the left mould is provided with the filling opening.

The invention also provides a linear motor rotor structure which comprises a rotor iron core, wherein a plurality of annular windings are arranged on the inner wall of the rotor iron core along the motion direction, the winding directions of any two annular windings are consistent, and every three adjacent annular windings are respectively connected with an A, B and C three-phase power supply to form a winding unit.

The invention also provides a linear motor which comprises a stator structure and a rotor structure, wherein the rotor structure is the rotor structure; the stator structure comprises a stator core and magnets distributed on the stator core along the movement direction.

Compared with the prior art, the annular winding has outstanding substantive characteristics and remarkable progress, and particularly, the annular winding is provided with the winding wire clamps and the pouring sealant layer, and the winding wire clamps can play a role in positioning in the winding assembling process, so that the uniform air gap between the annular winding and the stator magnet is ensured, the uniform air gap between the stator and the rotor of the motor is further ensured, and the linear motor can well run; the arrangement of the encapsulating adhesive layer can be used for heat dissipation in the running process of the motor and can also play an insulating role, so that the step of arranging insulating paper for auxiliary insulation and the step of integrally encapsulating the motor after arranging the insulating paper are omitted in the motor assembling process; in addition, the arrangement of the winding wire clamp and the pouring sealant layer can ensure the consistency of the specifications of the annular winding, and the part precision of the annular winding is improved.

In the winding step of the annular winding, the left clamp, the right clamp and the coil bearing surface of the winding wire clamp form a winding slot by utilizing the positioning action of the winding wire clamp, and the coil is wound on the coil bearing surface to fill the winding slot.

In the step of encapsulating the annular winding, a left mould, the annular winding and a right mould are tightly connected by utilizing the positioning action of a winding wire clamp, the annular winding is positioned in a sealed cavity formed by the left mould and the right mould, and pouring sealant is injected from an encapsulating opening of the sealed cavity so as to add a layer of encapsulating adhesive layer on the outer layer of the prefabricated winding; the arrangement of the encapsulating adhesive layer can further ensure that the specifications of the annular winding are consistent, and the encapsulating adhesive layer of the annular winding can dissipate heat in the operation process of the motor and can also play an insulating role.

In the assembly process, insulating paper is not required to be arranged between the two annular windings, but the annular windings with the same specification are directly sleeved, so that the precision of the whole assembly body is improved, the uniform air gap between the annular windings and the magnet is ensured, the uniform air gap between a stator and a rotor of the motor is further ensured, and the linear motor can well run; and after the sleeving is finished, potting and pouring sealant are not needed to be filled into the motor, so that the assembling steps are simplified.

When the rotor core is a quadrangular rotor base, the quadrangular rotor base is divided into a U-shaped base and an upper cover plate which is matched and connected with the U-shaped base, when the rotor core is assembled, the annular winding is firstly assembled in a U-shaped winding positioning groove in the U-shaped base, and after the assembly is finished, the upper cover plate and the U-shaped base are fixedly assembled into a whole; the arrangement realizes modular assembly of the rotor part of the linear motor, reduces assembly parts and assembly steps, and improves the precision of the whole assembly body, thereby further realizing uniform air gaps between the rotor and the stator.

Drawings

Fig. 1 is a schematic structural view of a winding clamp of the present invention.

FIG. 2 is a schematic view of the structure of the left clamp of the present invention.

Fig. 3 is a cross-sectional view of the invention left and right assembled with a winding clamp.

Fig. 4 is an enlarged schematic view of fig. 3.

Fig. 5 is a perspective view of the left and right clamps of the present invention assembled with a winding clamp.

FIG. 6 is a schematic view of the structure of the left mold of the present invention.

FIG. 7 is a schematic view of the structure of the right mold of the present invention.

Fig. 8 is an assembled cross-sectional view of the right die, left die and toroidal winding of the present invention.

Fig. 9 is a cross-sectional view of a toroidal winding.

Fig. 10 is a perspective view of a toroidal winding.

Fig. 11 is a schematic perspective view of the polygonal rotor base according to embodiment 2.

FIG. 12 is a schematic view showing the arrangement of the ring windings in example 2.

Fig. 13 is a schematic perspective view of the U-shaped seat according to embodiment 3.

FIG. 14 is a perspective view of the U-shaped seat of embodiment 5.

FIG. 15 is a schematic perspective view of a polygonal rotor base according to example 7.

Fig. 16 is a schematic perspective view of the U-shaped seat according to embodiment 7.

Fig. 17 is a schematic perspective view of the structure of the silicon steel sheet according to example 7.

Fig. 18 is a schematic structural view of the assembly of the U-shaped seat and the three-sided silicon steel sheet structure of embodiment 7.

FIG. 19 is a schematic sectional view of an upper lid plate of example 7.

Fig. 20 is a structural schematic view of the assembly of the upper cover plate and the silicon steel sheet structure in embodiment 7.

Fig. 21 is an overall assembly view of the linear motor according to embodiment 8.

Fig. 22 is a schematic view of the stator structure according to embodiment 8.

In the figure, 1, a winding wire clamp; 2. a boss; 3. a limiting block; 4. a left clamp; 5. a groove; 6. a threaded hole; 7. a right clamp; 8. a nut; 9. a bolt; 10. prefabricating a winding; 11. a left mold; 12. a first accommodating chamber; 13. filling and sealing; 14. a right mold; 15. a ring winding; 16. pouring a sealing adhesive layer; 17. a mover core; 18. a U-shaped seat; 19. an upper cover plate; 20. a card slot; 21. a limiting groove; 22. a U-shaped winding positioning groove; 23. silicon steel sheet grooves; 24. a silicon steel sheet structure; a stator core; 26. a magnet.

Detailed description of the invention

The technical solution of the present invention is further described in detail by the following embodiments.

Example 1

The invention relates to a manufacturing process of a ring winding, which comprises a winding step and an encapsulating step.

The winding step comprises the following steps: a left clamp 4 and a right clamp 7 are respectively installed on two sides of a winding wire clamp 1 and are tightly connected through a locking assembly, and a winding slot is formed by the right side wall of the left clamp 4, the left side wall of the right clamp 7 and a coil bearing surface of the winding wire clamp 1; and winding a coil on the coil bearing surface to fill the winding slot, stopping winding until the height of the coil in the winding slot reaches a first preset height, opening the locking assembly, and disassembling the left clamp 4 and the right clamp 7 to obtain the prefabricated winding 10.

As shown in fig. 1, the winding wire clamp 1 is of a polygonal structure, each edge of the polygonal structure is provided with a boss 2, the bosses 2 on the edges are connected to form a coil bearing surface, and the bottom of the coil bearing surface axially extends towards two sides to form opposite limiting blocks 3.

As shown in fig. 2, a groove 5 matched with the left limiting block 3 of the winding wire clamp 1 is formed in the right side surface of the left clamp 4.

It can be understood that the left side surface of the right clamp 7 is provided with a groove 5 matched with the right limiting block 3 of the winding clamp 1, and the specific structure is similar to that of fig. 2.

Further, in specific implementation, the locking assembly comprises a bolt 9 and a nut 8; correspondingly, threaded holes 6 are formed in the winding wire clamp 1, the left clamp 4 and the right clamp 7, bolts penetrate through the threaded holes 6, and are matched with the nuts 8 to assemble the winding wire clamp 1, the left clamp 4 and the right clamp 7 together.

Specifically, the structure diagram of the assembled winding wire clamp 1, the assembled left clamp 4 and the assembled right clamp 7 is shown in fig. 3-5, the winding wire clamp 1, the assembled left clamp 4 and the assembled right clamp 7 are fastened and connected to form a winding slot, and the arrangement of the winding slot enables the coil winding arrangement to be more regular and dense, so that the slot filling rate is improved; and because the size of the winding grooves formed before each winding is consistent, the formed annular windings can be ensured to be consistent in specification and meet the winding quality, and the stability of the winding quality is improved.

After the prefabricated winding 10 is obtained, a potting adhesive layer 16 needs to be added on the outer side of the prefabricated winding 10; specifically, the potting step includes: a left die 11 and a right die 14 are respectively arranged on the outer side of the prefabricated winding 10 formed in the winding step and are tightly connected through a locking assembly, and the left die 11 and the right die 14 form a sealed cavity; pouring sealant into the sealed cavity from the filling and sealing opening 13, wherein the pouring sealant is preferably epoxy resin glue; and when the liquid level of the pouring sealant in the sealing cavity reaches a second preset height, stopping pouring of the pouring sealant, opening the locking assembly, and detaching the left clamp 4 and the right clamp 7 to obtain the annular winding 15 coated with the pouring sealant layer 16.

The right die 14 is provided with a first accommodating cavity 12, and a groove 5 matched with the right limiting block 3 of the winding wire clamp 1 is formed in the first accommodating cavity 12; the left die 11 is provided with a second accommodating cavity, and the second accommodating cavity is provided with a groove 5 matched with the left limiting block 3 of the winding wire clamp 1; the first accommodating cavity 12 and the second accommodating cavity are matched to form a sealed cavity for accommodating the prefabricated winding; the right mold 14 or the left mold 11 is provided with the filling opening 13.

In practical implementation, the sizes of the first accommodating cavity 12 and the second accommodating cavity can be set according to requirements, and fig. 6 and 7 show a specific embodiment of the left mold 11 and the right mold 14; in this embodiment, the first chamber 12 that holds of right mould 14 is greater than far away the second of left mould 11 holds the chamber, during the assembly, will prefabricated winding 10 is installed first of right mould 14 holds the intracavity 12, will again the recess 5 of left mould 11 with the cooperation of joint mutually of left stopper 3 of winding fastener 1, last with locking Assembly will left mould 11 winding fastener 1 and right mould 14 fastens.

In a specific implementation, the locking assembly comprises a bolt 9 and a nut 8; threaded holes 6 are correspondingly formed in the left die 11 and the right die 14, bolts 9 penetrate through the threaded holes 6 and are matched with the nuts 8, and the prefabricated winding 10, the left die 11 and the right die 14 are assembled together. Specifically, a structure diagram of the prefabricated winding 10, the left mold 11, and the right mold 14 after assembly is shown in fig. 8.

The winding wire clamp 1, the left die 11 and the right die 14 are tightly connected to form a potting groove, epoxy resin glue is injected into the potting groove through the potting opening 13, so that an insulation structure, namely a potting adhesive layer 16, is formed on the outer side of the prefabricated winding 10, and the arrangement of the potting adhesive layer 16 can save the step of additionally arranging insulation paper between adjacent annular windings 15 for auxiliary insulation in the later assembly process of the linear motor; meanwhile, the potting adhesive layer 16 also has a heat dissipation effect, and the step of filling sealant into the linear motor for heat dissipation after the interphase insulating paper is filled can be reduced.

As shown in fig. 9-10, the toroidal winding 15 formed by the foregoing fabrication process includes:

the winding wire clamp comprises a winding wire clamp 1, wherein the winding wire clamp 1 is of a polygonal structure, each side of the polygonal structure is provided with a boss 2, the bosses 2 on the sides are connected to form a coil bearing surface, and the bottom of the coil bearing surface axially extends towards two sides to form opposite limiting blocks 3;

the coil is annularly wound on the coil bearing surface of the winding wire clamp 1;

and the potting adhesive layer 16 is uniformly coated around the coil, and two side edges of the potting adhesive layer 16 are vertically aligned with two sides of the coil bearing surface respectively.

It can be understood that, according to the requirement of the performance of the motor, the winding wire clamp 1 is made of a magnetic conductive material or a non-magnetic conductive material, and when the winding wire clamp 1 is made of a magnetic conductive material, the thrust fluctuation of the motor is small.

Example 2

The present embodiment provides a linear motor mover structure, as shown in fig. 11; the linear motor rotor structure comprises a rotor core 17, wherein the rotor core 17 comprises a polygonal rotor base, preferably, the polygonal rotor base is assembled by a plurality of base plates, and the polygonal rotor base is a quadrangular rotor base as shown in fig. 11.

The annular windings 15 described in embodiment 1 are installed on the inner wall of the polygonal rotor base along the movement direction, the winding directions of any two annular windings 15 are the same, and every three adjacent annular windings 15 are respectively connected to a three-phase power supply a, B, and C to form a winding unit, as shown in fig. 12.

It should be noted that, in practical implementation, any two adjacent annular windings 15 may be disposed at intervals, or may be disposed in close proximity.

In the embodiment, the secondary winding of the rotor structure part adopts the annular winding 15, so that the length of the end winding is effectively reduced, the copper consumption of the end part is reduced, and the motor efficiency is improved.

In addition, in this embodiment, the ring winding 15 has a winding wire clamp 1 and a potting adhesive layer 16, and the arrangement of the winding wire clamp 1 and the potting adhesive layer 16 can ensure that the ring winding 15 has the same specification, so that the part precision of the ring winding 15 is improved, the precision of the whole assembly body of the linear motor is improved, the uniform air gap between the ring winding 1 and the magnet 24 of the stator structure of the linear motor is ensured, the uniform air gap between the stator and the rotor of the linear motor is further ensured, and the linear motor can operate well.

Example 3

This example differs from example 2 in that: when the rotor core is a quadrangular rotor base, the quadrangular rotor base can be assembled by a U-shaped base 18 with a concave groove and an upper cover plate 19; the structure of the U-shaped seat 18 is shown in fig. 13.

During assembly, firstly, a plurality of annular windings 15 are installed on the inner wall of the U-shaped seat 18 along the movement direction, and then the upper cover plate 19 is covered on the U-shaped seat 18.

It can be seen that in the present embodiment, the ring winding 15 is mounted inside the rotor base in a slotless manner; and the U-shaped seat 18 can realize the modular assembly of the rotor part of the linear motor, reduces the assembly parts and the assembly steps, and improves the precision of the whole assembly body, thereby further realizing the uniform air gap between the rotor structure and the stator structure of the linear motor.

Example 4

The present example differs from example 2 in that: the inner wall of the seat plate is provided with a plurality of clamping grooves 20 along the movement direction, and the clamping grooves 20 are matched with the clamping grooves 20 on other seat plates to form winding positioning grooves for limiting the annular winding 15.

It can be seen that in this embodiment the annular winding 15 is mounted inside the rotor base in a slotted manner. The winding positioning slots can enable the installed ring windings 15 to have consistent spacing and can prevent the ring windings 15 from moving during the operation of the motor.

It can be understood that the top of the sidewall of each slot 20 is provided with a limiting groove 21 corresponding to the limiting block 3 of the ring winding 15. During installation, the limiting groove 21 is matched with the limiting block 3 of the annular winding 15 to block the annular winding 15, so that the annular winding 15 is limited.

Example 5

The present embodiment differs from embodiment 3 in that: as shown in fig. 14, a plurality of U-shaped winding positioning slots 22 are formed in the inner wall of the U-shaped seat 18 along the movement direction, and one ring winding 15 is installed in each U-shaped winding positioning slot 22;

a plurality of clamping grooves 20 are formed in the inner wall of the upper cover plate 19 corresponding to the U-shaped winding positioning grooves 22, and each clamping groove 20 is matched with the corresponding U-shaped winding positioning groove 22 to fix one annular winding 15;

during assembly, the plurality of annular windings 15 are sequentially installed in the U-shaped winding positioning grooves 22 on the inner wall of the U-shaped seat 18, then the plurality of clamping grooves 20 on the upper cover plate 19 are respectively aligned with the tops of the annular windings 15, and then the upper cover plate 19 is fastened on the U-shaped seat 18.

Example 6

This example differs from example 2 in that: a silicon steel sheet groove 23 is formed in the inner wall of the seat plate along the movement direction, a silicon steel sheet structure 24 is installed in the silicon steel sheet groove 23, and a plurality of clamping grooves 20 are formed in one side of the silicon steel sheet structure 24; the clamping grooves 20 are matched with clamping grooves 20 on other seat plates and used for limiting the annular winding 15.

In specific implementation, the silicon steel sheet structure 24 may be formed by laminating a plurality of linear silicon steel sheets, and after being manufactured, a plurality of clamping grooves 20 are formed on one side of the silicon steel sheet structure 24;

of course, the silicon steel sheet structure 24 may also be directly formed by directly laminating a plurality of silicon steel sheets with a plurality of slots 20 punched on one side.

In order to resist the magnetic attraction of the stator part to the stator, the silicon steel sheet groove 23 is connected with the silicon steel sheet structure 24 in an interference fit manner.

Example 7

This example differs from example 3 in that:

as shown in fig. 15-18, three inner side walls of the U-shaped seat 18 are provided with 1 silicon steel sheet groove 23 along the moving direction, 1 silicon steel sheet structure 24 is installed in the silicon steel sheet groove 23, and one side of the silicon steel sheet structure 24 is provided with a plurality of clamping grooves 20; the clamping grooves 20 on the U-shaped seats are matched to form U-shaped winding positioning grooves 22 for limiting the annular windings 15, and each U-shaped winding positioning groove 22 is internally provided with one annular winding 15;

as shown in fig. 19 to 20, the inner wall of the upper cover plate 19 is provided with 1 silicon steel sheet groove 23 along the moving direction, the silicon steel sheet structure 24 is installed in the silicon steel sheet groove 23, and the clamping groove 20 on the silicon steel sheet structure 24 is matched with the corresponding U-shaped winding positioning groove 22 to fix one of the ring windings 15.

Specifically, the assembling method of the linear motor rotor structure comprises the following steps:

obtaining a ring winding 15, wherein the ring winding 15 is manufactured by adopting the manufacturing process of the ring winding 15 described in embodiment 1;

manufacturing a silicon steel sheet structure 24, laminating a plurality of linear silicon steel sheets to form the silicon steel sheet structure 24, and forming a plurality of clamping grooves 20 on one side of the silicon steel sheet structure 24 after manufacturing;

manufacturing an upper cover plate 19 and a U-shaped seat 18, wherein 1 silicon steel sheet groove 23 is formed in the inner wall of the upper cover plate 19 along the movement direction; three inner side walls of the U-shaped seat are respectively provided with 1 silicon steel sheet groove 23 along the movement direction;

installing the silicon steel sheet structures 24 into the silicon steel sheet grooves 23 on the upper cover plate 19 and the U-shaped seat 18 respectively;

a plurality of annular windings 15 are sequentially arranged in a U-shaped winding positioning groove 22 formed by a plurality of clamping grooves 20 on the inner wall of the U-shaped seat 18, wherein the winding directions of any two adjacent annular windings 15 are the same;

three-phase power supplies of A, B and C are arranged, and every three adjacent annular windings 15 are respectively connected with the three-phase power supplies of A, B and C to form a winding unit;

finally, a plurality of clamping grooves 20 on the upper cover plate 19 are respectively aligned with the tops of the ring windings 15, and then the upper cover plate 19 is fastened on the U-shaped seat 18 through bolts 9.

It can be understood that, in order to fix the upper cover plate 19 and the U-shaped seat 18, two sides of the inner wall of the upper cover plate 19 are respectively provided with a groove, and a bolt hole is formed in the groove; correspondingly, the end parts of two vertical edges of the U-shaped seat 18 correspond to the bolt holes on the upper cover plate 19, and corresponding bolt holes are also formed in the two vertical edges, so that the upper cover plate 19 and the U-shaped seat 18 are fastened through bolts 9 during use.

It can be seen that although the winding wire clamp 1 has a simple structure, the winding wire clamp has a very critical role in three processes of winding, potting and assembling, the winding wire clamp is also a medium, and the limiting blocks 3 on the end face of the winding wire clamp 1 play a role in positioning in each link, so that the manufacturing precision of each process is ensured.

The annular winding 15 is directly placed in the U-shaped winding positioning groove 22 without being separated by insulating paper materials, so that the traditional assembly mode is broken, the insulating performance is ensured, and meanwhile, the assembly steps are simplified; meanwhile, the encapsulating adhesive layer 16 of the annular winding 15 can play a role in heat dissipation, epoxy resin glue does not need to be encapsulated in the motor to increase heat dissipation components, and the assembling steps are simplified.

Example 8

The present embodiment provides a linear motor, including a stator structure and a mover structure, where the mover structure is the mover structure described in any one of embodiments 1 to 7; the stator structure comprises a stator core 25 and magnets 26 distributed over the stator core 25 in the direction of movement, as shown in fig. 21-22.

In specific implementation, when the rotor core 17 is a quadrangular rotor base, the stator core 25 is also a quadrangular structure composed of an upper base plate, a lower base plate, a left base plate and a right base plate, the magnets 24 on the upper base plate, the lower base plate, the left base plate and the right base plate are magnetized along the normal direction, and the magnetizing directions of two adjacent magnets 24 are opposite; and the magnetizing directions of the magnet 24 of the lower seat plate and the magnet 24 of the upper seat plate are opposite, and the magnetizing directions of the magnet 24 of the left seat plate and the magnet 24 of the right seat plate are opposite.

It can be understood that the magnets 26 are fixed on the surface of the stator core 25 at equal intervals, and form an air gap with a rectangular cross section with the annular winding 15 in the rotor core 17, so that a load can be directly driven to make linear motion, and the stator core has the advantages of high thrust density, high power density, low thrust fluctuation, convenience in processing and assembly and the like.

Further, the stator core 25 is supported by a silicon steel sheet magnetic material; the magnet 24 is made of permanent magnet materials such as rubidium, iron, boron, samarium, cobalt and ferrite.

The annular winding 15 is provided with the winding wire clamp 1 and the pouring sealant layer 16, and the winding wire clamp 1 can play a role in positioning in the winding assembling process, so that the uniform air gap between the annular winding 15 and the magnet 26 is ensured, the uniform air gap between a stator and a rotor of the motor can be further ensured, and the linear motor can well run; the arrangement of the encapsulating adhesive layer 16 can be used for heat dissipation in the running process of the motor and can also play an insulating role, so that the step of arranging insulating paper for auxiliary insulation and the step of integrally encapsulating the motor after arranging the insulating paper are omitted in the motor assembling process; in addition, the winding wire clamp 1 and the potting adhesive layer 16 can ensure that the specifications of the formed annular winding 15 are consistent, and the part precision of the annular winding 15 is improved.

Finally, it should be noted that the above examples are only used to illustrate the technical solution of the present invention and not to limit it; although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that: modifications to the specific embodiments of the invention or equivalent substitutions for parts of the technical features may be made; without departing from the spirit of the present invention, it is intended to cover all aspects of the invention as defined by the appended claims.

Claims

1. A toroidal winding, comprising:

and the potting adhesive layer is uniformly coated around the coil, and the edges of two sides of the potting adhesive layer are vertically aligned with the two sides of the coil bearing surface respectively.

2. A manufacturing process of a ring winding is characterized by comprising a winding step and an encapsulating step;

the winding step comprises the following steps: a left clamp and a right clamp are respectively installed on two sides of the winding wire clamp, and the left clamp, the winding wire clamp and the right clamp are fixedly connected through a locking assembly, so that a winding groove is formed by the right side wall of the left clamp, the left side wall of the right clamp and a coil bearing surface of the winding wire clamp;

winding a coil on the coil bearing surface to fill the winding slot, stopping winding until the height of the coil in the winding slot reaches a first preset height, and opening the locking assembly to detach the left clamp and the right clamp to obtain a prefabricated winding;

the right die is provided with a first accommodating cavity, and the first accommodating cavity is internally provided with a groove matched with a right limiting block of the winding wire clamp; the left die is provided with a second accommodating cavity, and a groove matched with a left limiting block of the winding wire clamp is formed in the second accommodating cavity; the first accommodating cavity and the second accommodating cavity are matched to form a sealed cavity for accommodating the prefabricated winding; the right mould or the left mould is provided with the filling opening.

3. A linear motor active cell structure comprises an active cell iron core, and is characterized in that: the rotor iron core comprises a polygonal rotor base, a plurality of the annular windings in claim 1 are mounted on the inner wall of the polygonal rotor base along the movement direction, the winding directions of any two annular windings are consistent, and every three adjacent annular windings are respectively connected with an A, B and C three-phase power supply to form a winding unit.

4. A linear motor mover structure as claimed in claim 3, characterized in that: polygonal active cell seat includes a plurality of bedplate, and a plurality of draw-in groove has been seted up along the direction of motion to every bedplate inner wall, the draw-in groove cooperates with the draw-in groove on other bedplate, is used for right annular winding carries on spacingly.

5. The linear motor mover structure of claim 4, wherein: a silicon steel sheet groove has been seted up along the direction of motion to every bedplate inner wall, install a linear type silicon steel sheet structure in the silicon steel sheet groove, a plurality of draw-in groove has been seted up along the direction of motion to linear type silicon steel sheet structure one side, the draw-in groove cooperates with the draw-in groove on other bedplate, is used for right annular winding carries on spacingly.

6. A linear motor mover structure as claimed in claim 3, characterized in that: when the rotor iron core is a quadrangular rotor base, the quadrangular rotor base comprises a U-shaped base with a concave groove and an upper cover plate which is matched and connected with the U-shaped base;

during assembly, firstly, a plurality of annular windings are installed on the inner wall of the U-shaped seat along the movement direction, and then the upper cover plate is covered on the U-shaped seat.

7. A linear motor mover structure as claimed in claim 3, characterized in that: when the rotor core is a quadrangular rotor base, the quadrangular rotor base comprises a U-shaped base with a concave groove and an upper cover plate which is matched and connected with the U-shaped base;

a plurality of U-shaped winding positioning grooves are formed in the inner wall of the U-shaped seat along the movement direction, and one annular winding is installed in each U-shaped winding positioning groove;

a plurality of clamping grooves are formed in the inner wall of the upper cover plate corresponding to the U-shaped winding positioning grooves, and each clamping groove is matched with the corresponding U-shaped winding positioning groove to fix one annular winding.

8. A linear motor mover structure as claimed in claim 3, characterized in that: when the rotor iron core is a quadrangular rotor base, the quadrangular rotor base comprises a U-shaped base with a concave groove and an upper cover plate which is matched and connected with the U-shaped base;

the three inner side walls of the U-shaped seat are provided with 1 silicon steel sheet groove along the movement direction, a silicon steel sheet structure is arranged in each silicon steel sheet groove, a plurality of clamping grooves are formed in one side of each silicon steel sheet structure along the movement direction, the clamping grooves are matched with clamping grooves in other seat plates to form U-shaped winding positioning grooves, and each U-shaped winding positioning groove is internally provided with one annular winding;

the inner wall of the upper cover plate is provided with 1 silicon steel sheet groove along the motion direction, one silicon steel sheet structure is installed in each silicon steel sheet groove, and a clamping groove in each silicon steel sheet structure is matched with a corresponding U-shaped winding positioning groove to fix one annular winding.

9. A linear motor mover structure as claimed in any one of claims 4-8, characterized in that: and the top of the side wall of each winding positioning groove is provided with a limiting groove corresponding to the limiting block of the annular winding.

10. A linear electric motor characterized by: comprising a stator structure and a mover structure, the mover structure being the linear motor mover structure of any of claims 3-9, the stator structure comprising stator cores and magnets distributed over the stator cores in the direction of motion.