CN211803758U - Low-pressure cast aluminum die for motor rotor - Google Patents
Low-pressure cast aluminum die for motor rotor Download PDFInfo
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- CN211803758U CN211803758U CN201922312071.6U CN201922312071U CN211803758U CN 211803758 U CN211803758 U CN 211803758U CN 201922312071 U CN201922312071 U CN 201922312071U CN 211803758 U CN211803758 U CN 211803758U
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Abstract
The utility model relates to an electric motor rotor low pressure cast aluminum mould belongs to electromechanical device technical field. The utility model discloses mainly solve among the prior art because the mold design is unreasonable, lead to cast the technical problem of defects such as aluminium rotor waters not enough, shrinkage cavity. The technical scheme of the utility model is that: the utility model provides an electric motor rotor low pressure cast aluminum mould, includes mould, well mould and lower mould, the lower mould middle part is provided with the sprue, wherein: the volume of the sprue is not less than 30% of the volume of aluminum in the cast aluminum rotor, the inclination of the side wall of the sprue is greater than 4 degrees, an annular liquid storage step is arranged in the middle of the sprue, a plurality of cross runners are arranged in the circumferential direction of the upper portion of the sprue, and a shunting cap placement step is arranged at the upper portion of the sprue; the minimum distance between the cross gate and the shunting cap is not less than 15mm, the inclination of the side wall of the step placed on the shunting cap is 2 degrees, and the cross gate and the liquid storage step are in fillet transition. The utility model has the advantages of convenient processing and manufacture, reasonable structural design and the like.
Description
Technical Field
The utility model belongs to the technical field of electromechanical device, in particular to electric motor rotor low pressure cast aluminum mould.
Background
At present, the cast aluminum processing mode of the motor rotor mainly comprises two types of pressure cast aluminum and centrifugal cast aluminum, and compared with the centrifugal cast aluminum, the pressure cast aluminum has the following characteristics: (1) pressure plays a major role throughout the die casting process; (2) because the molten metal filling process is carried out under the action of pressure, the rotor iron core can be die-cast in a cold state; (3) the production efficiency is high, and the mechanization and automation are easy to realize, thereby reducing the labor intensity. Therefore, the pressure casting aluminum is widely applied to the processing of the motor rotor.
In the low-pressure aluminum casting process of the motor aluminum casting rotor, if the mold is unreasonable in design, the defects of insufficient casting, shrinkage cavity and the like of the aluminum casting rotor are caused.
Disclosure of Invention
An object of the utility model is to overcome prior art's shortcoming, provide an electric motor rotor low pressure cast aluminum mould, solve among the prior art because the mold design is unreasonable, lead to cast aluminum rotor to water the technical problem of defects such as not enough, shrinkage cavity.
The utility model discloses a realize through following technical scheme:
the utility model provides an electric motor rotor low pressure cast aluminum mould, includes mould, well mould and lower mould, the lower mould middle part is provided with the sprue, wherein: the volume of the sprue is not less than 30% of the volume of aluminum in the cast aluminum rotor, the inclination of the side wall of the sprue is greater than 4 degrees, an annular liquid storage step is arranged in the middle of the sprue, a plurality of cross runners are arranged in the circumferential direction of the upper portion of the sprue, and a shunting cap placement step is arranged at the upper portion of the sprue;
the minimum distance between the cross gate and the shunting cap is not less than 15mm, the inclination of the side wall of the step for placing the shunting cap is 2 degrees, the cross gate and the annular liquid storage step are in fillet transition, and the radius of the transition fillet is R5-R10;
and an annular exhaust groove is formed in the bottom of the lower die.
The utility model discloses a to lower mould structural design's improvement, when the effectual cast aluminium of having solved, because of the die design is unreasonable, lead to cast aluminium rotor to water the technical problem of defects such as not enough, shrinkage cavity. Compared with the prior art, the utility model has the advantages of processing preparation is convenient, structural design is reasonable.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
As shown in fig. 1, the low-pressure aluminum casting mold for the motor rotor in the present embodiment includes an upper mold, a middle mold, and a lower mold, where a sprue 1 is provided in the middle of the lower mold, where: the volume of the sprue 1 is not less than 30% of the volume of aluminum in the cast aluminum rotor so as to ensure the feeding requirement of the aluminum liquid during cooling; the inclination of the side wall of the sprue 1 is more than 4 degrees, so that the demolding is facilitated; the annular liquid storage step 2 is arranged in the middle of the sprue 1, so that the volume of molten aluminum can be increased as much as possible under the condition of allowing strength, the heat capacity is increased, and the sprue 1 is ensured to be cooled finally when the cast aluminum rotor is cooled; a plurality of cross runners 3 are arranged in the circumferential direction of the upper part of the sprue 1, and a shunting cap placing step 4 is arranged at the upper part of the sprue 1;
the minimum distance between the cross gate 3 and the shunting cap is not less than 15mm, the inclination of the side wall of the shunting cap placing step 4 is 2 degrees, the cross gate 3 and the annular liquid storage step 2 are in fillet transition, and the radius of the transition fillet is R5-R10;
and an annular exhaust groove is formed in the bottom of the lower die.
As the present invention may be embodied in several forms without departing from the spirit or essential characteristics thereof, it should also be understood that the above-described embodiments are not limited by any of the details of the foregoing description, but rather should be construed broadly within its scope as defined in the appended claims, and therefore all changes and modifications that fall within the meets and bounds of the claims, or equivalences of such meets and bounds are therefore intended to be embraced by the appended claims.
Claims (1)
1. The utility model provides an electric motor rotor low pressure cast aluminum mould, includes mould, well mould and lower mould, the lower mould middle part is provided with sprue (1), its characterized in that: the volume of the sprue (1) is not less than 30% of the volume of aluminum in the cast aluminum rotor, the inclination of the side wall of the sprue (1) is greater than 4 degrees, an annular liquid storage step (2) is arranged in the middle of the sprue (1), a plurality of cross runners (3) are arranged in the circumferential direction of the upper portion of the sprue (1), and a shunting cap placement step (4) is arranged on the upper portion of the sprue (1);
the minimum distance between the cross gate (3) and the shunting cap is not less than 15mm, the inclination of the side wall of the shunting cap placing step (4) is 2 degrees, the cross gate (3) and the annular liquid storage step (2) are in fillet transition, and the radius of the transition fillet is R5-R10;
and an annular exhaust groove is formed in the bottom of the lower die.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922312071.6U CN211803758U (en) | 2019-12-20 | 2019-12-20 | Low-pressure cast aluminum die for motor rotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922312071.6U CN211803758U (en) | 2019-12-20 | 2019-12-20 | Low-pressure cast aluminum die for motor rotor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211803758U true CN211803758U (en) | 2020-10-30 |
Family
ID=73032920
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922312071.6U Active CN211803758U (en) | 2019-12-20 | 2019-12-20 | Low-pressure cast aluminum die for motor rotor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211803758U (en) |
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2019
- 2019-12-20 CN CN201922312071.6U patent/CN211803758U/en active Active
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