Motor rotor pressure cast aluminium die

Abstract

The invention relates to a motor rotor pressure cast aluminium die comprising an upper die part, a lower die part and a rotor core part, wherein the upper die part comprises a guide post, a cushion plate, an upper die, a washer and a bolt, the upper die is connected with the cushion plate by the guide post, and one end of the guide post is fixed by the washer and the bolt; the lower die part comprises a middle die, a pressure plate and a lower die, wherein the middle die and the pressure plate are respectively arranged into an inner hole and an outer circle position of the lower die; the rotor core part comprises a tippy key, a guide sleeve, a dummy spindle and a rotor core, wherein the tippy key is inlaid into a groove of the dummy spindle, the dummy spindle is arranged into a positioning hole of the lower die, and the rotor core is sleeved into the dummy spindle when being guided by the tippy key and is sleeved into the guide sleeve after reaching technological required weight. Because exhaust grooves are reasonably arranged on the cushion plate of the motor rotor pressure cast aluminium die, air and aluminium-water residual gas are effectively discharged in the motor rotor pressure cast aluminium die in order to solve a cast aluminium roller shrinking phenomenon; and when demoulding, a cast aluminium roller is ejected by a pressure die casting machine, and the middle die automatically stays into the lower die to reduce labor intensity of workers and increase production efficiency.

Description

technical field [0001] The invention relates to a pressure casting aluminum mold for a motor rotor, in particular to a mold used for pressure manufacturing of a motor casting aluminum rotor, which belongs to the processing technology equipment of motor components. Background technique [0002] In the existing technology, the pressure cast aluminum mold used in the manufacture of the cast aluminum rotor of the motor has poor exhaust, and the cast aluminum rotor has shrinkage cavity, which seriously affects the product quality. At the same time, the cast aluminum rotor must be pulled out together with the middle mold when demoulding. Workers' labor intensity is high during operation, and production efficiency is low. Contents of the invention [0003] The purpose of the present invention is to overcome the above disadvantages, thereby providing a method that can effectively discharge the air and aluminum water residual gas in the mold, and solve the shrinkage phenomenon of t...

AI Technical Summary

Problems solved by technology

[0002] In the existing technology, the pressure cast aluminum mold used in the manufacture of the cast aluminum rotor of the motor has poor exhaust, and the cast aluminum rotor has shrinkage cavity phenomenon, which seriou

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