Production method for preheating forming loudspeaker vibration diaphragm

Abstract

The invention discloses a production method for preheating forming loudspeaker vibration diaphragm. The method comprises the steps such as impregnation, drying, preheating, hot press forming and cutting. In the impregnation step, a base material is impregnated into resin solution. In the drying step, the base material is dried. In the preheating step, the base material is preheated in an environment that preheating temperature is lower than glass transition temperature of resin. In the hot press forming step, heating and compression forming is carried out on the base material to obtain loudspeaker vibration diaphragm preset shapes in the environment that forming temperature is higher than the glass transition temperature of the resin. In the cutting step, the loudspeaker vibration diaphragm preset shapes are cut off from the base material, thereby obtaining the loudspeaker vibration diaphragm. According to the method, the base material comprising thermosetting resin and thermoplastic resin is provided, the time of forming the loudspeaker vibration diaphragm is reduced, the production efficiency is improved; and according to the produced loudspeaker vibration diaphragm, noises can be removed.

Description

technical field [0001] The invention relates to a manufacturing method of a horn vibrating piece, in particular to a manufacturing method of a preheated horn vibrating piece. Background technique [0002] Please refer to figure 1 Generally, a typical moving coil speaker 10 includes a power system, a drum paper 11 and a suspension system. The power system further includes: magnet 15 , pole piece, upper iron, gap and voice coil 14 . The drum paper 11 is a diaphragm used to move air, generally a cone or hemispherical sound cone. The suspension system is composed of structures such as elastic waves 12 and suspension edges 13, which are used to pull the directional movement of the diaphragm. Its working principle is that when the current flows through the voice coil 14, an electromagnetic field is generated, which is at right angles to the magnetic field of the permanent magnet 15 on the speaker, which makes the movable coil be stressed by the gap (the gap between the voice co...

AI Technical Summary

Problems solved by technology

That is to say, preheating at a preheating temperature higher than the glass transition temperature of the resin will cause the thermosetting resin to solidify during the preheating step, making subsequent molding and cutting steps impossible

It is conceivable that this pre-heating method for manufacturing horn vibrating pieces is not suitable for substrates containing thermosetting resins, but only suitable for substrates containing thermoplastic resins.

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