Laser welding method and device for loudspeaker dustproof film

Abstract

The invention discloses a laser welding method and device for a loudspeaker dustproof film. The laser welding method comprises the steps that the to-be-welded position of a loudspeaker plastic shell is coated with a laser absorbent, and then the dustproof film is tightly pressed and attached to the to-be-welded position; and a laser beam is adopted to illuminate the to-be-welded position, and thecontact surface, making contact with the dustproof film, of the loudspeaker plastic shell is melted, so that the dustproof film is welded to the loudspeaker plastic shell. According to the laser welding method for the loudspeaker dustproof film, non-contact-type welding processing of loudspeaker plastic shell plastic and the dustproof film is achieved, auxiliary materials do not need to be added,processing traces cannot be seen after welding is conducted, the appearance is attractive, the enough strength is ensured through whole face processing, the quality of a product is greatly improved, the whole service life is greatly prolonged, secondary pollution and waste cannot be caused, and mechanical stress and thermal stress are not produced; and the laser welding method is simple in processand good in consistency, and automatic production is easy to realize.

Description

technical field [0001] The invention relates to the technical field of laser welding, in particular to a laser welding method and device for a dust-proof film of a loudspeaker. Background technique [0002] Laser transmission welding has many advantages over existing plastic welding techniques. Unlike vibration ultrasonic welding, laser transmission welding is a non-contact process, which is less likely to cause damage to sensitive components, such as those containing electronic circuits. Additionally, it requires few specialized tools, whereas most vibro-ultrasonic, hot-plate welding systems require many specialized tools to process the components. As a non-contact technique, laser welding avoids tool contamination and product associated with other traditional techniques. placement problem. The beam from the diode laser system is highly controllable, and the output is stable and pre-set, allowing continuous welding. The laser has a high power and a wide beam, so it can w...

AI Technical Summary

Problems solved by technology

[0005] In view of the above-mentioned deficiencies in the prior art, the object of the present invention is to provide a laser welding method and device for a speaker dust-proof film, thereby overcoming the fact that the welding of the existing speaker dust-proof film is likely to cause damage to sensitive components, or there is a waste of glue material, Glue overflows, affects the appearance, and the problem of complicated process

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