Rotor cast aluminum mold with multiple runners

Abstract

The invention discloses a rotor cast aluminum mold with multiple runners. The rotor cast aluminum mold comprises an upper mold, a middle mold and a lower mold; a rotor iron core is arranged in a cavity formed among the upper mold, the middle mold and the lower mold; the inner circle of the rotor iron core is connected with a false shaft; the upper mold is provided with an upper template; the lower mold is provided with a lower template; the middle mold is provided with a casting runner; the casting runner includes a taper section and a cylinder section; the taper section is communicated with an external runner; the cylinder section is communicated with the rotor iron core; and casting branches are symmetrically arranged in the connecting place of the taper section and the cylinder section. The casting runner is formed in the middle mold, and the casting branches are arranged on two sides of the casting runner, so that cast molten aluminum can be uniformly distributed in the rotor iron core from each direction, the distribution uniformity of the molten aluminum in each place of the rotor iron core is guaranteed, and the cast aluminum quality of the rotor is effectively improved.

Description

technical field [0001] The invention relates to a cast aluminum mold for a rotor, in particular to a cast aluminum mold for a rotor with multiple channels. Background technique [0002] At present, the casting aluminum processing methods of motor rotors mainly include pressure casting aluminum and centrifugal casting aluminum. Compared with centrifugal casting aluminum, pressure casting aluminum has the following characteristics: (1) Pressure plays a major role throughout the die casting process; ( 2) Since the molten metal filling process is carried out under pressure, the rotor core can be die-cast in a cold state; (3) The production efficiency is high, and it is easy to realize mechanization and automation, thereby reducing labor intensity. Therefore, die cast aluminum is more widely used in the processing of motor rotors. [0003] The currently used pressure casting aluminum molds all have casting runners on the lower mold, and the aluminum liquid enters from the castin...

AI Technical Summary

Problems solved by technology

[0003] The currently used pressure casting aluminum molds all have casting runners on the lower mold, and the aluminum liquid enters from the casting runners of the lower mold, and flows to the rotor core under the action of pressure. Entering from the lower mold, when the liquid aluminum moves from the lower mold to the upper mold, the rotor core near the upper mold is often prone to gaps due to insufficient pressure, resulting in uneven distribution of the aluminum liquid around the rotor core, and the rotor The problem of poor quality of cast aluminum

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