Manufacturing method of shell of motor stator

Abstract

The invention discloses a manufacturing method of a shell of a motor stator. The method comprises the steps of: a, overlying and fixing a plurality of silicon steel sheets as a silicon steel sheet assembly; b, carrying out injection moulding on the silicon steel sheets with plastic to form a silicon polar framework of the motor stator, wherein the silicon polar framework of the motor stator comprises a plastic circular framework and a plurality of silicon steel sheet assemblies, the plastic circular framework is an integral framework or formed by two or more than two arc-shaped frameworks, and the silicon steel sheet assemblies are arranged circumferentially along the plastic circular framework; each silicon steel sheet assembly is fixedly connected with the plastic circular framework, a plastic separation fence of the plastic circular framework is arranged between the adjacent silicon steel sheet assemblies, and the outer side of each silicon steel sheet assembly is at least partially exposed to the circumferential wall of the plastic circular framework; and c, placing the silicon framework of the motor stator into a shell module of the motor stator, and then carrying out injection moulding with the plastic to form the integral shell of the motor stator. According to the manufacturing method of the shell of the motor stator provided by the invention, the silicon steel sheet assemblies are accurately positioned, and the production cost is low.

Description

technical field [0001] The invention relates to a method for manufacturing a motor stator casing of a motor immersed in liquid. Background technique [0002] In the daily production and life of human beings, some work must be done in liquid. Therefore, a special motor that works in liquid was born. The characteristics of this motor are: the rotor of the motor must be immersed in the liquid to work, and the inner surface of the stator must be sealed and cannot penetrate into the liquid. [0003] This kind of special motor includes rotor, stator casing and stator coil. The stator casing is made of plastic injection molding, the rotor is installed in the stator casing, the stator coil is sheathed outside the stator casing, and the stator casing has circumferentially arranged silicon. The inner side of the steel sheet assembly and the silicon steel sheet assembly cannot be exposed outside the inner wall of the stator housing. Once exposed, the entire motor stator will seep wate...

AI Technical Summary

Problems solved by technology

However, due to the thickening of the inner circular sealing layer of the stator housing, the inner wall of the silicon steel sheet assembly is too far away from the inner wall of the stator housing, which will affect the transmission of the magnetic field between the stator and the rotor, resulting in poor performance of the motor

In order to ensure the normal working power of the motor, silicon steel sheet components made of special high-grade (containing rare elements) silicon steel sheets must be used, so the production cost is high

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