VIBRATING DIAPHRAGM MOULD

WIPO Patent Application WO/2022/099790

A1

Provided is a vibrating diaphragm mould. The mould comprises: a mould body; a folded-ring-type core part, wherein the folded ring-type core part is annular, and is formed by protruding the top face of the mould body; a mesopore-type core part, which is formed on an inner side of the folded-ring-type core part; a fixing-type core part, which is formed on an outer side of the folded-ring-type core part; and a contraction groove, wherein the contraction groove is annular and is formed by depressing the top face of the mould body, the contraction groove is arranged surrounding the fixing-type core part and is spaced apart from the folded-ring-type core part, the contraction groove comprises two oppositely arranged first side grooves, two oppositely arranged second side grooves, and a corner groove, which is connected to the adjacent first side groove and second side groove, and the groove depths of the first side grooves, the second side grooves and the corner groove are different. Compared with the prior art, a vibrating diaphragm formed by the vibrating diaphragm mould of the present utility model has good moulding contraction flatness.

JPH0497816	CONTROLLER OF MOLDING MACHINE
JPH081690	PRODUCTION OF PERFORATED FACE PLATE MADE OF COMPOSITE MATERIAL

LU DONG (CN)
WANG CHANGLIANG (CN)
WU MEIWEI (CN)

PCT/CN2020/131400

May 19, 2022

November 25, 2020

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AAC ACOUSTIC TECH SHENZHEN CO LTD (CN)
AAC MICROTECH CHANGZHOU CO LTD (CN)

B29C33/00; H04R7/00; H04R31/00

CN207825055U	2018-09-07
CN207327575U	2018-05-08
CN211941659U	2020-11-17
CN110913320A	2020-03-24
CN210308619U	2020-04-14
CN112305805A	2021-02-02
CN103347233A	2013-10-09
JP2000141423A	2000-05-23

SHENZHEN JUNXINCHENG INTELLECTUAL PROPERTY FIRM (GENERAL PARTNERSHIP) (CN)

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