Epoxy resin cast process of motor stator winding

Abstract

The invention discloses an epoxy resin cast process of a motor stator winding. A pasty-state epoxy resin and a firming agent are cast into a gap formed by cooperation between a motor stator and a cast mold at a certain temperature, heat-curing is then performed at a certain temperature and at certain time, an enameled wire is completely sealed in the epoxy resin, the enameled wire and the epoxy resin are completely solidified to form one body, there are no slits between the integral body of the epoxy resin and the solidified enameled wire after solidification and an iron core, the mechanical strength of the motor stator is high, the thermal conductivity is good, and the service life of a motor is prolonged.

Description

[0001] technical field [0002] The invention relates to the field of motor manufacturing, in particular to an epoxy resin pouring process for motor stator windings. Background technique [0003] In order to improve the mechanical strength, insulation performance and thermal conductivity of the motor, the traditional manufacturing process of the motor stator is generally to impregnate and cure with insulating varnish after the wire embedding is completed. But the defects of this manufacturing process are: 1. The insulating varnish cannot completely fill the gaps between the enameled wires and between the enameled wires and the iron core. In addition, the thermal conductivity of the insulating varnish is small, so the overall heat conduction effect of the stator is not good. Well, the heat generated when the motor is running cannot be dissipated in time, and the motor will burn out if it runs for a long time. 2. The mechanical properties of the cured enameled wire and insulat...

AI Technical Summary

Problems solved by technology

However, the defects of this manufacturing process are: 1. The insulating varnish cannot completely fill the gaps between the enameled wires and between the enameled wires and the iron core. In addition, the thermal conductivity of the insulating varnish is small, so the overall heat conduction effect of the stator is not good. Well, the heat generated when the motor is running cannot be dissipated in time, and the motor will be burned if it runs for a long time

2. The mechanical properties of the cured enameled wire and insulating varnish are relatively good at the initial stage of operation, but after a long operation time, the enameled wire will destroy the cured whole under repeated electromagnetic impacts, resulting in looseness between the enameled wires, or even It will cause the enameled wire to rub against the notch of the iron core repeatedly and damage the insulation of the enameled wire and burn the motor