Lead spot welding tooling and line spot welding method for sound films of loudspeakers

Abstract

The invention relates to a lead spot welding tooling and a lead spot welding method for sound films of loudspeakers. The lead spot welding tooling comprises a lower base and an upper press base. The upper end face of the lower base is provided with limit flanges and a boss. The boss is provided with a positioning hole. The inner wall of the positioning hole is provided with a positioning groove. An annular step surface for mounting a sound coil is arranged at the upper end of the boss. The upper press base comprises a first base body and a second base body inserted into the positioning hole. The diameter of the first base body is larger than the diameter of the positioning hole. The second base body is provided with a positioning insert matched with the positioning groove. Lead retaining support legs are arranged on two side walls of the first base body. The limit flanges are respectively provided with a lead clamping notch. Two leads of the sound coil are subjected to spot welding on a frame without mutual contact, are loosened sufficiently and cannot vibrate along with the sound films, so that breakage of the leads due to fatigue is effectively avoided, and the service life of products is prolonged. Further, the integral load of the sound films is reduced, the loudspeakers are better in pure tone and low in distortion, operation can be completed by only one person, work efficiency is improved and labor cost is reduced.

Description

Technical field [0001] The invention belongs to the technical field of electronic devices, and specifically relates to speakers in the field of electronic devices, and more specifically to a speaker sound film dot-line tooling and method. Background technique [0002] The current dot-line method of the sound film is to lead the two leads of the voice coil from the same point, and fix the two leads on the sound film with glue, and then dot the voice coil leads on the sound film with glue. The disadvantage of this dot-line method Yes: Because the two voice coil leads are drawn from the same point, the two leads are in contact with each other. After the sound film is vibrated and rubbed for a long time, the insulation layer on the two leads is often wiped, causing the two lead conductors to contact and form a short circuit, so that the speaker will be It will be unable to produce sound and cannot be used; at the same time, glue the voice coil lead on the sound film. When vibrating, ...

AI Technical Summary

Problems solved by technology

[0002] At present, the dot line method of the sound film is to lead the two lead wires of the voice coil from the same point, and fix the two lead wires on the sound film with glue, and then point the lead wire of the voice coil on the sound film with glue. The disadvantage of this dot line method Yes: Since the two voice coil lead wires are led out from the same point, and the two lead wires are in contact with each other, after the long-term vibration and friction of the sound film, the insulating layer on the two lead wires is often scratched, causing the two lead wire conductors to contact to form a short circuit, so that the speaker will At the same time, use glue to point the voice coil lead on the sound film. When vibrating, the voice coil lead will vibrate with the sound film, which will easily cause fatigue and disconnection of the lead; and glue the voice coil On the sound film, the load on the sound film is increased, resulting in a decrease in the pure tone of the speaker and an increase in distortion; at the same time, this method of dotted lines requires a lot of manual collaboration to complete, and the shape and amount of glue of the dotted lines are completely controlled manually. It is easy to cause the quality of the speaker to deteriorate

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