Improved Soldering Method for Aluminum Enameled Wire of Terminals of Motor Coil Assembly and Drainage Pump

Abstract

The invention discloses an improved soldering method for aluminum enameled wire of a terminal of a motor coil assembly, which comprises the following steps: (1) winding the aluminum enameled wire on the terminal, leaving a space between adjacent aluminum enameled wires that can accommodate copper enameled wire; (2) Copper enameled wire is wound on the outer surface of the aluminum enameled wire wound on the terminal, and the copper enameled wire is filled into the wire gap of the adjacent aluminum enameled wire; (3) The wiring wrapped by the copper enameled wire Immerse the terminal part in a 400-500°C liquid tin furnace, drag it out after 2-4s by 5-10mm, and form a tin layer shell on the copper enameled wire wrapping part; (4) Plastic-enclose the motor coil assembly and form a wrap around the terminal The plastic layer of the tin layer. The present invention uses the copper enameled wire to wrap the part where the aluminum enameled wire is wound around the connection terminal, does not need to remove the paint of the aluminum enameled wire in advance, has excellent solder adhesion performance, and does not need to add flux or cleaning agent to clean the whole process.

Description

technical field [0001] The invention relates to the technical field of motors, in particular to motors using aluminum enameled wires. Background technique [0002] Existing motors often use aluminum enameled wires instead of copper wires as the winding of the stator core, which can reduce the manufacturing cost of the motor. However, the wiring soldering technology between aluminum wire and other media has always been a difficult problem, because the aluminum enameled wire is not easy to stick to tin. Most of the current aluminum enameled wire soldering process needs to remove the paint in a tin furnace at about 400°C, and then wrap the part of the paint that has been peeled off on the terminal. Immerse in flux, and then immerse this part in a tin furnace at about 300°C for tinning. In the existing process, the aluminum enameled wire is first stripped of its paint, and then wound on the terminal block can only be realized manually, and automatic production cannot be realiz...

AI Technical Summary

Problems solved by technology

Since this cleaning is difficult to implement automatic cleaning, manual operation is prone to quality fluctuations

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