Internal joint process of aluminum wire motor

Abstract

The invention discloses an internal joint process of an aluminum wire motor. Firstly, an aluminum enamelled wire and a copper lead-out wire are subjected to terminal press connection, during the press connection, the aluminum enamelled wire is placed at the bottom of a U-shaped terminal, and the copper lead-out wire is placed on the aluminum enamelled wire; then, a heat shrinkage sleeve is sheathed on the U-shaped terminal, at least 10mm of heat shrinkage sleeves are respectively exposed at two ends of the U-shaped terminal, a stator is placed on a heating air passage, the heat shrinkage sleeve is heated, and two ends of the heat shrinkage sleeve are sealed, fixed and formed; next, an insulation sleeve is sheathed outside the sealed sleeve; and finally, the stator is integrally immersed by insulation paint and is then baked, and during the process, the insulation paint is immersed inside the insulation sleeve. The internal joint process of the aluminum wire motor has the advantages that the heat shrinkage sleeves are sheathed outside the U-shaped terminal, the triple sealing protection is realized at the aluminum wire joint part through the sheathing of the insulation sleeve and the immersing of the insulation paint, the sealing effect at the U-shaped terminal part is better, and the motor insulation is more perfect, so the motor quality is improved, and the service life of the motor is prolonged.

Description

technical field [0001] The invention relates to the production field of aluminum wire motors, in particular to an internal joint process of aluminum wire motors. Background technique [0002] With the sharp rise in the price of copper, the cost pressure of the motor industry is increasing day by day. Since the price of aluminum is less than 1 / 2 of the price of copper, and the proportion of aluminum is less than 1 / 3 of that of copper, the cost advantage of aluminum is quite obvious. More and more motor manufacturers are starting to produce aluminum wire motors. However, due to the very active chemical properties of metal aluminum, the following two difficulties will arise in the production process of aluminum wire motors: 1. After high temperature, the aluminum wire will be oxidized rapidly, and even turn black, forming an oxide film, which makes welding difficult. 2. The aluminum wire joints must be sealed to prevent oxidation, but this will reduce the electrical conductivi...

AI Technical Summary

Problems solved by technology

However, due to the very active chemical properties of metal aluminum, the following two difficulties will arise in the production process of aluminum wire motors: 1. After high temperature, the aluminum wire will be oxidized rapidly, or even blackened, forming a layer of oxide film, which makes welding difficult

2. The aluminum wire joint must be sealed to prevent oxidation, but this will reduce the electrical conductivity and reduce its service life