Packaging process for motor stator

Abstract

The invention discloses a packaging process for a stator of a motor. The process steps include: first, putting a metal jig into the stator wound with copper wires; then preheating the stator at a temperature of 80°C for 1 hour; Pour liquid epoxy resin colloid into the tool, press the colloid in with the center rod and squeeze it while filling the glue; stop the extrusion when the coil is completely submerged in the colloid; then put the stator after the glue filling under temperature Bake at 80°C for 4 hours, heat to solidify the glue; after the glue cools and hardens, use a hydraulic press to take out the metal jig to complete the packaging product of the motor stator. The present invention squeezes the colloid while filling the glue, which can effectively discharge the air bubbles in the colloid, making the surface of the glue filling smooth and ensuring the normal operation of the motor; and the process is simple, which fully ensures that the inside of the stator can be completely filled with glue. Furthermore, the insulation and voltage resistance of the motor stator are guaranteed, and it is suitable for mass production.

Description

technical field [0001] The invention relates to a packaging process, in particular to a packaging process of a motor stator. Background technique [0002] The stator of a motor is generally composed of a stator winding, a stator core, and a stator casing that wraps the stator core. In some harsh environments such as water mist and oil mist, the stator winding of the motor stator is easily affected by these harsh environments. , problems such as reduced insulation strength, increased stator winding leakage current, reduced stator winding life, etc., eventually lead to stator winding burnout. [0003] At present, the method of improving the protection performance of the motor stator: generally, the liquid epoxy resin with high thermal conductivity is poured between the motor casing and the stator winding for curing and encapsulation. Process" is recorded in the patent application documents, and its disclosed packaging process flow includes: [0004] 1. Fill the fixture on th...

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Problems solved by technology

[0007] However, in the actual implementation process, we found that this glue filling technology needs to be carried out under high temperature and high pressure conditions at the same time, and the end surface after glue filling will also appear uneven, and bubble holes will be formed on the end surface. If the air bubbles are not discharged, the inner side of the electronic injection glue will protrude to the inner layer of the electronic coil, which will cause the motor rotor to be stuck by the protruding glue injection when it rotates, which will affect the normal operation of the motor

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