CN211981598U

CN211981598U - Motor rotor disc and forming die thereof

Info

Publication number: CN211981598U
Application number: CN201922079661.9U
Authority: CN
Inventors: 王文明
Original assignee: Igset Automation Technology Suzhou Co ltd
Current assignee: Igset Automation Technology Suzhou Co ltd
Priority date: 2019-11-27
Filing date: 2019-11-27
Publication date: 2020-11-20
Anticipated expiration: 2029-11-27

Abstract

The utility model discloses a motor rotor dish and forming die thereof, the rotor dish includes the forming die of rotor dish and rotor dish, the rotor dish is including outer molding ring, permanent magnet and the glass fiber cloth layer that the encapsulating formed, the glass fiber cloth layer is laid in the outer molding ring, the permanent magnet along the inboard circumference subsection of outer molding ring, the glass fiber cloth layer has the cooperation the magnet mounting groove of permanent magnet, the permanent magnet sets up in the magnet mounting groove to place the encapsulating encapsulation in forming die, the utility model discloses rotor dish among the device has the characteristics that the quality is light, intensity is big, is applicable to the operating mode of axis to the magnetic field motor under high rotational speed.

Description

Motor rotor disc and forming die thereof

Technical Field

The utility model relates to a motor field, specific is a motor rotor dish and forming die thereof.

Background

The axial magnetic field motor is suitable for working under the working condition of high rotating speed and has the characteristics of small volume and high power density. In actual manufacturing, the machining process of the rotor disc is always difficult, because the mass of the rotor disc is required to be as small as possible, so that the rotating torque is small, and the starting is rapid; however, at high rotational speeds, the centrifugal forces to which the rotor disks, in particular the edge regions, are subjected are very high, and it is a problem how to ensure their mechanical strength. Meanwhile, the rotor disc needs to fix the embedded permanent magnet, so that the embedded permanent magnet cannot fall off.

Disclosure of Invention

In order to overcome the defect in the prior art, the embodiment of the utility model provides a motor rotor dish and forming die thereof, the rotor dish has the characteristics that quality is little intensity is big.

The embodiment of the application discloses: the utility model provides an electric machine rotor dish, includes the forming die of rotor dish and rotor dish, the rotor dish is including outer shaping ring, permanent magnet and the glass fiber cloth layer that the encapsulating formed, the glass fiber cloth layer is laid in the outer shaping ring, the permanent magnet along the inboard circumference subsection of outer shaping ring, the glass fiber cloth layer has the cooperation the magnet mounting groove of permanent magnet, the permanent magnet sets up in the magnet mounting groove.

Preferably, the outer mold ring is disposed in the outer mold ring installation groove, and a depth of the outer mold ring installation groove is identical to a thickness of the outer mold ring.

Preferably, the outer forming ring is a stainless steel metal ring, and the outer wall of the outer forming ring is attached to the inner wall of the outer forming ring.

Preferably, there are 10 permanent magnets, the glass fiber cloth adopts laser cutting processing, there are 10 magnet mounting grooves in the annular cutting on the glass fiber cloth, the glass fiber cloth layer is laid in the outer forming ring.

Preferably, the outer contour of the permanent magnet is trapezoidal, reinforcing ribs are arranged on at least two end faces of the permanent magnet, and a resin coating layer is arranged on the surface of the permanent magnet.

Preferably, the reinforcing ribs are provided on a pair of parallel surfaces in a thickness direction of the permanent magnet, and the reinforcing ribs are embedded in the magnet mounting grooves.

Preferably, the glass fiber cloth is DB12K200-1270 carbon fiber axial cloth, and 21 layers of glass fiber cloth are laid in the outer forming ring.

Preferably, the thickness of the permanent magnet is identical to that of the outer molding ring.

The embodiment of the application also discloses, a forming die of above-mentioned motor rotor dish, forming die includes upper cover and base, upper cover and base constitute by the stainless steel material cylinder of same diameter, all be equipped with the screw on upper cover and the base, be equipped with outer shaping ring mounting groove on the base, advance gluey hole and exhaust hole.

The utility model has the advantages as follows: the molding method of the encapsulated rotor disc comprises the steps of paving the outer molded ring into a molding mold, paving the glass fiber cloth layer in the outer molded ring, so that the overall weight of the rotor disc is reduced, the overall structure of the rotor disc is strengthened, paving the permanent magnet in the magnet mounting groove of the glass fiber cloth layer, defoaming the resin, pouring the resin subjected to defoaming into the molding mold in vacuum, further grinding the encapsulated rotor disc, and drilling a through hole.

In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

In order to illustrate the embodiments of the present invention or the technical methods in the prior art more clearly, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is a schematic view of the rotor disk structure.

Fig. 2 is a schematic structural view of the forming die.

Fig. 3 is a schematic structural view of the fiberglass cloth layer mounted on the forming die.

Fig. 4 is a schematic view of the permanent magnet structure.

Reference numerals of the above figures: 1. an outer forming ring; 2. a glass fiber cloth layer; 3. a permanent magnet; 4. a base; 5. an upper cover; 6. forming a mold; 7. an outer forming ring mounting groove; 8. reinforcing ribs; 9. a glue inlet hole; 10. an exhaust hole; 11. a rotor disk; 12. A screw hole; 13. a magnet mounting groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1, the encapsulated rotor disc molding method includes a rotor disc 11 and a rotor disc molding mold 6, where the rotor disc 11 includes an outer molding ring 1 formed by encapsulating, a permanent magnet 3, and a glass fiber cloth layer 2, the glass fiber cloth layer 2 is laid in the outer molding ring 1, the permanent magnet 3 is circumferentially distributed along the inner side of the outer molding ring 1, the glass fiber cloth layer 2 has a magnet mounting groove 13 matching with the permanent magnet 3, and the permanent magnet 3 is disposed in the magnet mounting groove 13; the forming die 6 comprises an upper cover 5 and a base 4, the upper cover 5 and the base 4 are both made of stainless steel cylinders with the same diameter, screw holes 12 are formed in the upper cover 5 and the base 4, the screw holes 12 are used for fixedly connecting the upper cover 5 and the base 6, an outer forming ring mounting groove 7, a glue inlet hole 9 and an exhaust hole 10 are formed in the base 6, the outer forming ring mounting groove 7 is used for mounting the outer forming ring 1, the glue inlet hole 9 is used for pouring glue resin, and the exhaust hole 10 is used for exhausting gas in the forming die 6; the method comprises the steps of, in a first step, placing the outer forming ring 1 in the forming mould 6; secondly, cutting the glass fiber cloth layer 2 into a circle matched with the outer forming ring 1, cutting a magnet mounting groove 13 on the glass fiber cloth layer 2, and laying the glass fiber cloth layer 2 on the inner side of the outer forming ring 1; fourthly, placing the permanent magnet 3 in the magnet mounting groove 13; fifthly, pouring the resin subjected to vacuum defoaming into the forming mold 6 in a vacuum environment; and sixthly, polishing the rotor disc 11 processed by the encapsulated rotor disc molding method and drilling a through hole.

Outer type ring 1 is arranged in outer type ring mounting groove 7, the laminating of 1 outer wall of outer type ring 7 inner wall of outer type ring mounting groove, the degree of depth of outer type ring mounting groove 7 with outer type ring 1 thickness is the same, outer type ring 1 is made by stainless steel material, is used for the protection the overall structure of rotor dish 11.

Glass fiber cloth layer 2 adopts laser cutting processing, the annular cutting has 10 on the glass fiber cloth layer 2 with the magnet mounting groove 13 that the permanent magnet 3 matches, glass fiber cloth layer 2 is laid in the outer type ring 1, DB12K200-1270 carbon fiber axial cloth is selected for use on glass fiber cloth layer 2, glass fiber cloth layer 2 is in lay 21 layers in the outer type ring 1, ensure 11 roots in rotor dish have sufficient tensile force, alleviate greatly the whole quality of rotor dish 11 reduces the inertial force that rotor dish 11 received when high-speed rotation prevents its fracture.

The number of the permanent magnets 3 is 10, the outer contour of each permanent magnet 3 is trapezoidal, the thickness of each permanent magnet 3 is consistent with that of the outer forming ring 1, reinforcing ribs 8 are arranged on a pair of parallel surfaces in the thickness direction of each permanent magnet 3, the reinforcing ribs 8 are embedded into the resin after encapsulation in the magnet mounting grooves 13, the permanent magnets 3 are ensured not to fall off when the rotor disc 11 rotates at a high speed, and resin coating films are used on the surfaces of the permanent magnets 3 to protect the permanent magnets 11 from being corroded.

The resin is epoxy resin, the working temperature of the resin is higher than 180 ℃, the rotor disc 11 can work for a long time in a high-temperature environment, the resin is filled into the forming die 6 in a vacuum environment after defoaming treatment, bubbles in the resin are discharged, and the strength of the rotor disc 11 is further improved.

The present invention has been explained by using specific embodiments, and the explanation of the above embodiments is only used to help understand the method and the core idea of the present invention; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the specific implementation and application scope, to sum up, the content of the present specification should not be understood as the limitation of the present invention.

Claims

1. An electric machine rotor disc, characterized by: forming die including rotor dish and rotor dish, the rotor dish is including the outer shaping ring that the encapsulating formed, permanent magnet and glass fiber cloth layer, glass fiber cloth layer is laid in the outer shaping ring, the permanent magnet along the inboard circumference subsection of outer shaping ring, glass fiber cloth layer has the cooperation the magnet mounting groove of permanent magnet, the permanent magnet sets up in the magnet mounting groove.

2. An electric machine rotor disc according to claim 1, wherein: the outer forming ring is arranged in the outer forming ring mounting groove, and the depth of the outer forming ring mounting groove is consistent with the thickness of the outer forming ring.

3. An electric machine rotor disc according to claim 2, wherein: the outer shaping ring is a stainless steel metal ring, and the outer wall of the outer shaping ring is attached to the inner wall of the outer shaping ring mounting groove.

4. An electric machine rotor disc according to claim 1, wherein: there are 10 permanent magnets, the annular cutting has 10 magnet mounting grooves on the glass fiber cloth, the glass fiber cloth layer is laid in outer forming ring.

5. An electric machine rotor disc according to claim 4, wherein: the outer contour of the permanent magnet is trapezoidal, reinforcing ribs are arranged on at least two end faces of the permanent magnet, and a resin coating layer is arranged on the surface of the permanent magnet.

6. An electric machine rotor disc according to claim 5, wherein: the reinforcing ribs are arranged on a pair of parallel surfaces along the thickness direction of the permanent magnet, and the reinforcing ribs are embedded in the magnet mounting grooves.

7. An electric machine rotor disc according to claim 1, wherein: the glass fiber cloth is DB12K200-1270 carbon fiber axial cloth, and 21 layers of glass fiber cloth are laid in the outer forming ring.

8. An electric machine rotor disc according to claim 1, wherein: the thickness of the permanent magnet is consistent with that of the outer forming ring.

9. A mould for forming a rotor disc for an electric machine according to any of claims 1 to 8, wherein: the forming die comprises an upper cover and a base, wherein the upper cover and the base are formed by stainless steel cylinders with the same diameter, screw holes are formed in the upper cover and the base, and an outer forming ring mounting groove, a glue inlet hole and an exhaust hole are formed in the base.