CN214255908U - Die-casting rotor - Google Patents
Die-casting rotor Download PDFInfo
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- CN214255908U CN214255908U CN202120450232.2U CN202120450232U CN214255908U CN 214255908 U CN214255908 U CN 214255908U CN 202120450232 U CN202120450232 U CN 202120450232U CN 214255908 U CN214255908 U CN 214255908U
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- rotor lamination
- lamination group
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Abstract
The utility model discloses a die-casting rotor, including rotor lamination group one, rotor lamination group two, be formed with middle aluminium ring between rotor lamination group one, the rotor lamination group two, rotor lamination group one, the rotor lamination group two outside is formed with outside aluminium ring, can solve the quality hidden danger of longer closed slot rotor die-casting disconnected strip, thin strip, gas pocket, improves rotor cast aluminium filling rate, can solve die-casting rotor exhaust problem, and especially to the great rotor improvement of major diameter is obvious, adopts the utility model discloses the structure under the unchangeable condition of rotor overall length, can adopt different chute degree and direction, adjust the performance of rotor, like this under the same length, let the rotor performance more optimize, extend the range of application of motor. Adopt the utility model discloses the structure for the rotor has changed the feeding distance at the die-casting in-process, can improve production efficiency by a wide margin, has reduced manufacturing cost.
Description
Technical Field
The utility model relates to a motor manufacturing field, concretely relates to die-casting rotor.
Background
At present, rotors of most small and medium-sized low-voltage motors in China are designed to be in a closed groove shape, the motor rotors are all laminated by the same laminated punching sheet, and metal guide bars are all finished by pressure casting or centrifugal casting.
The motor rotor die casting is different from the pure cavity die casting of a common structural part, the motor rotor die casting is die casting of a cavity formed by a rotor iron core insert and an upper rotor die and a lower rotor die, the middle of the cavity is connected by a plurality of thin and long groove shapes, the size of the cavity is greatly different due to the large design difference of rotor aluminum rings with different types and different pole numbers and the size of the groove shapes, particularly, the sectional area of the 2-pole motor aluminum ring is large, the air in the cavity is more, and whether the air can be smoothly discharged in the moment of die casting is the key for ensuring the internal quality of the rotor.
The flowing of the aluminum liquid is a more complex mixing process during die casting; the internal rotor die-casting generally adopts a vertical aluminum casting machine and a horizontal die-casting machine, the fan blades on the rotor are subjected to aluminum feeding, and the die-casting time is only 1-5 seconds. Generally, the number of grooves of the rotor is large, during die casting, groove-shaped aluminum liquid facing the fan blades is directly sprayed to an upper die cavity, part of the aluminum liquid returns from the groove shape beside the upper die cavity and is converged with the aluminum liquid from the side of a lower die cavity, therefore, the flow direction of the aluminum liquid in the injection process is quite disordered, and in the die casting process of the closed-slot rotor, because the die casting speed is high, the fan blades on the upper die or the end face of an aluminum ring are partially exhausted, a large amount of air is wrapped in rotor aluminum strips and the aluminum ring and is not exhausted, large air holes are caused, and serious quality hidden troubles such as thin strips, broken strips and the like exist in rotor guide strips. In the manufacturing process, the process is one-side feeding and one-side exhausting no matter the length and the length of the rotor, the mold structure is single, casting defects such as product air holes, broken bars and thin bars are large, and the performance of the motor is seriously influenced.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model adopts the following technical scheme:
the utility model provides a die-casting rotor, including rotor lamination group one, rotor lamination group two, be formed with middle aluminium ring between rotor lamination group one, the rotor lamination group two, rotor lamination group one, the rotor lamination group two outside is formed with outside aluminium ring.
Preferably, the middle aluminum ring and the outer aluminum ring are integrally formed by die casting after being fed between the rotor lamination group I and the rotor lamination group II.
Preferably, the rotor lamination group I and the rotor lamination group II are positioned by adopting a central shaft during die casting, and a gap of 0.5-1.5mm is reserved between the rotor lamination group I and the rotor lamination group II.
Preferably, the first rotor lamination group and the second rotor lamination group are manufactured by laminating a plurality of closed slot rotor punching sheets, and a plurality of inclined slots are formed on the first rotor lamination group and the second rotor lamination group.
Preferably, the first rotor lamination group and the second rotor lamination group have the same inclined angle.
Preferably, the first rotor lamination group and the second rotor lamination group have different chute angles.
Preferably, the directions of the inclined grooves of the first rotor lamination group and the second rotor lamination group are the same.
Preferably, the directions of the inclined grooves of the first rotor lamination group and the second rotor lamination group are different.
The beneficial effects of the utility model reside in that: adopt the utility model discloses the preparation effect that the structure can make the rotor is better, adopts middle feeding both sides exhaust mode, can solve the quality hidden danger of longer closed slot rotor die-casting broken strip, thin strip, gas pocket, improves rotor cast aluminium filling rate, can solve die-casting rotor exhaust problem, and it is obvious especially to the great rotor improvement of major diameter, adopts the utility model discloses the structure under the unchangeable condition of rotor overall length, can adopt different chute degree and direction, adjusts the performance of rotor, like this under the same length, lets the rotor performance more optimize, extends the range of application of motor. Adopt the utility model discloses the structure for the rotor has changed the feeding distance at the die-casting in-process, can improve production efficiency by a wide margin, has reduced manufacturing cost.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, 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 for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic view of a closed slot rotor lamination;
FIG. 2 is a schematic view of the rotor core placement after lamination;
fig. 3 is a schematic structural view of embodiment 1 of the present invention;
fig. 4 is a schematic structural diagram of embodiment 2 of the present invention.
Description of reference numerals:
1. the rotor lamination group I, 2, the rotor lamination group II, 3, a middle aluminum ring, 4 and an outer aluminum ring.
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.
Example 1: as shown in fig. 1 to 3, the present embodiment provides a die-cast rotor including a rotor lamination group 1 and a rotor lamination group two 2, an intermediate aluminum ring 3 is formed between the rotor lamination group 1 and the rotor lamination group two 2, and an outer aluminum ring 4 is formed outside the rotor lamination group 1 and the rotor lamination group two 2. The middle aluminum ring 3 and the outer aluminum ring 4 are integrally formed by die casting after being fed between the rotor lamination group I1 and the rotor lamination group II 2. The rotor lamination group I1 and the rotor lamination group II 2 are positioned by adopting a central shaft during die casting, and a gap of 0.5-1.5mm is reserved between the rotor lamination group I1 and the rotor lamination group II 2. The rotor lamination group I1 and the rotor lamination group II 2 are manufactured by adopting a plurality of closed slot rotor punching sheets in a laminated mode, a plurality of chutes are formed in the rotor lamination group I1 and the rotor lamination group II 2, 2 exhaust surfaces are arranged in the length direction of a rotor, an exhaust groove corresponding to each chute is formed in each exhaust surface, the chute degrees of the rotor lamination group I1 and the rotor lamination group II 2 are the same, and the chute directions of the rotor lamination group I1 and the rotor lamination group II 2 are the same.
Example 2: as shown in fig. 4, this embodiment is different from embodiment 1 in that the skewed angles of the rotor lamination group 1 and the rotor lamination group 2 are different, and the skewed angle directions of the rotor lamination group 1 and the rotor lamination group 2 are different.
Adopt the utility model discloses the preparation effect that the structure can make the rotor is better, adopts middle feeding both sides exhaust mode, can solve the quality hidden danger of longer closed slot rotor die-casting broken strip, thin strip, gas pocket, improves rotor cast aluminium filling rate, can solve die-casting rotor exhaust problem, and it is obvious especially to the great rotor improvement of major diameter, adopts the utility model discloses the structure under the unchangeable condition of rotor overall length, can adopt different chute degree and direction, adjusts the performance of rotor, like this under the same length, lets the rotor performance more optimize, extends the range of application of motor. Adopt the utility model discloses the structure for the rotor has changed the feeding distance at the die-casting in-process, can improve production efficiency by a wide margin, has reduced manufacturing cost.
It will be apparent to those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (8)
1. The die-cast rotor is characterized by comprising a rotor lamination group I (1) and a rotor lamination group II (2), wherein an intermediate aluminum ring (3) is formed between the rotor lamination group I (1) and the rotor lamination group II (2), and an outer aluminum ring (4) is formed outside the rotor lamination group I (1) and the rotor lamination group II (2).
2. A die-cast rotor as defined in claim 1, characterized in that the middle aluminum ring (3) and the outer aluminum ring (4) are integrally die-cast by feeding them from between the first rotor lamination stack (1) and the second rotor lamination stack (2).
3. A die-cast rotor as defined in claim 2, characterized in that the rotor lamination stack one (1) and the rotor lamination stack two (2) are positioned by using a central shaft during die-casting, and a gap of 0.5-1.5mm is left between the rotor lamination stack one (1) and the rotor lamination stack two (2).
4. The die-cast rotor as claimed in claim 1, wherein the first rotor lamination set (1) and the second rotor lamination set (2) are made by laminating a plurality of closed slot rotor punching sheets, and a plurality of inclined slots are formed on the first rotor lamination set (1) and the second rotor lamination set (2).
5. A die-cast rotor as defined in claim 4, characterized in that the angles of the inclined slots of the rotor lamination group one (1) and the rotor lamination group two (2) are the same.
6. A die-cast rotor as defined in claim 4, characterized in that the angles of inclination of the rotor lamination group one (1) and the rotor lamination group two (2) are different.
7. A die-cast rotor as defined in claim 4, characterized in that the oblique slots of the rotor lamination group one (1) and the rotor lamination group two (2) are oriented in the same direction.
8. A die-cast rotor as defined in claim 4, characterized in that the directions of the oblique slots of the rotor lamination group one (1) and the rotor lamination group two (2) are different.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120450232.2U CN214255908U (en) | 2021-03-02 | 2021-03-02 | Die-casting rotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120450232.2U CN214255908U (en) | 2021-03-02 | 2021-03-02 | Die-casting rotor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214255908U true CN214255908U (en) | 2021-09-21 |
Family
ID=77727326
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120450232.2U Active CN214255908U (en) | 2021-03-02 | 2021-03-02 | Die-casting rotor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214255908U (en) |
-
2021
- 2021-03-02 CN CN202120450232.2U patent/CN214255908U/en active Active
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