Diaphragm forming mold

Abstract

The invention relates to a diaphragm forming mold, which comprises a diaphragm forming mold seat and a die head matched with the diaphragm forming mold seat, and the diaphragm forming mold seat includes a machine base and is arranged on the machine base The ring forming part, the ring forming part includes two relatively spaced apart long straight sides, two opposite short straight sides and a corner connecting the long straight sides and the short straight sides, The width of the long straight portion and / or the short straight portion gradually widens from the middle to both ends. The vibrating film forming mold provided by the present invention compensates the width of the ring forming part, that is, the width of the straight side part is gradually widened from the middle to both ends. In this way, when forming a vibrating film material with a large shrinkage rate , this structure can compensate the width dimension at the inner diameter of the diaphragm surround, so that the width of the entire diaphragm surround surface remains consistent, so that problems such as poor pure tone of the diaphragm, asymmetric amplitude, and poor performance will not be caused.

Description

【Technical field】 [0001] The invention relates to the technical field of electroacoustic product processing molds, in particular to a diaphragm forming mold. 【Background technique】 [0002] The diaphragm is an important part of the micro-speaker, which plays a vital role in the sound reproduction performance of the micro-speaker, and it determines the conversion quality of the speaker from electricity to sound. The forming of the diaphragm is usually by placing the diaphragm between the forming mold seat and the mold head, and then forming it by high temperature and pressure. [0003] The structure of the conventional diaphragm forming mold is designed to have the same width on the entire surround surface. The disadvantages of this structure are as follows: For the diaphragm material with a large shrinkage rate after molding, the inner diameter of the diaphragm surround will shrink inward, and the straight line will become an arc. It leads to the problem of inconsistent wid...

AI Technical Summary

Problems solved by technology

[0003] The structure of the conventional diaphragm forming mold is designed to have the same width on the entire surround surface. The disadvantages of this structure are as follows: For the diaphragm material with a large shrinkage rate after molding, the inner diameter of the diaphragm surround will shrink inward, and the straight line will become an arc. The problem of inconsistency in the width of the rings is caused. For conventional products, this will lead to problems such as poor pure tone, asymmetric amplitude, and poor performance.

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