CN-224210356-U - Sound diaphragm hot briquetting machine

CN224210356UCN 224210356 UCN224210356 UCN 224210356UCN-224210356-U

Abstract

The utility model relates to a hot-press forming machine for a sound diaphragm, which comprises a base, a lower die holder, a lower die, a thimble mechanism, a heat dissipation hole, a pipe slot II and an electric heating pipe, wherein the lower die holder is embedded in the top of the base, the middle of the lower die is provided with the pipe slot I, the lower die is provided with a die slot in the top of the lower die, the lower die is arranged in the die slot, the top surface of the lower die is provided with a placing slot, the bottom of the placing slot is provided with a forming slot, the center of the bottom of the forming slot is provided with an upward protruding cambered surface, a telescopic power mechanism I is arranged between the edge of the bottom of the upper die and the outer wall of the base, the middle of the upper die is provided with a plurality of pipe slots II at intervals, the center of the bottom of the upper die is provided with an arc slot, the thimble mechanism is provided with the heat dissipation hole, the pipe slot II and the electric heating pipe is additionally arranged at the corresponding position of the upper die holder while the lower die holder is provided with the electric heating pipe slot I, so that bidirectional synchronous heating of the sound diaphragm material is realized, and warping deformation caused by temperature difference is remarkably reduced.

Inventors

LIU DESHENG
WANG NING
XU LEI
YANG WENKAI
Fang Shengqiao

Assignees

广范企业发展（连云港）有限公司

Dates

Publication Date: 20260508
Application Date: 20250528

Claims (4)

1. A hot press molding machine for a sound membrane is characterized by comprising a base; A lower die holder is embedded at the top of the base, and a plurality of tube slots I for accommodating the electric heating tubes are formed in the middle of the lower die holder; The lower die is arranged in the die groove, a placing groove is formed in the top surface of the lower die, a plurality of forming grooves are formed in the bottom of the placing groove at intervals, and an upward protruding cambered surface is formed in the center of the bottom of the forming groove; a telescopic power mechanism I for driving the upper die holder to vertically move is arranged between the edge of the bottom surface of the upper die holder and the outer wall of the base, and a plurality of pipe grooves II are formed in the middle of the upper die holder at intervals; A plurality of upper dies positioned right above the forming groove, the top surfaces of the upper dies are fixed on the bottom surface of the upper die holder, and an arc groove is formed in the center of the bottom surface of the upper dies; The bottom of the base is provided with a containing groove, a telescopic power mechanism II is vertically arranged in the containing groove, the top end of the telescopic power mechanism II is fixedly provided with a driving plate, a plurality of ejector pins are vertically and fixedly arranged on the top surface of the driving plate, and the top ends of the ejector pins penetrate through the lower die holder and the lower die and then extend to the bottom of the forming groove; And the lower die base and the lower die between two adjacent forming grooves are respectively provided with a heat dissipation hole, the air inlet end of the heat dissipation hole is positioned at the top of the accommodating groove, and the air outlet end of the heat dissipation hole is positioned at the bottom of the forming groove.
2. The apparatus of claim 1, wherein the grooves I and II are horizontally disposed.
3. The apparatus of claim 1, wherein the telescopic power mechanism I and the telescopic power mechanism II are respectively provided with a pair.
4. The apparatus of claim 1, wherein the driving plate is horizontally disposed.

Description

Sound diaphragm hot briquetting machine Technical Field The utility model relates to the technical field of production of acoustic diaphragms, in particular to a thermal compression molding machine for acoustic diaphragms. Background Acoustic diaphragms are key components in electroacoustic devices (such as speakers, headphones, etc.), the molding quality of the acoustic diaphragm directly affects the acoustic performance, and conventional acoustic diaphragm manufacturing generally adopts a hot press molding process, i.e., a material is placed in a mold and molded by heating and pressurizing, however, the following technical problems exist in the existing hot press molding equipment: (1) The heating effect of the die is slow, the existing equipment is generally provided with a heating element only on a lower die holder, the top of the sound diaphragm is also required to be heated, and the sound diaphragm is easily heated unevenly in a bottom-to-top heating mode, so that poor molding is caused; (2) After the hot pressing is finished, the local heat of the die is accumulated, and the general cooling is natural cooling, but the cooling time is longer, and the cooling efficiency is low; In order to solve the above-mentioned problems, it is needed to design a hot press forming machine for acoustic diaphragm with uniform heating, rapid demoulding, efficient heat dissipation and modularized die structure, so as to improve the production efficiency and the product quality. Disclosure of utility model Aiming at the defects of the prior art, the utility model provides the hot-press forming machine for the sound diaphragm, which has high heat efficiency and good heat dissipation effect. The technical problem to be solved by the utility model is realized by the following technical scheme that the hot press forming machine for the acoustic diaphragm comprises a base; A lower die holder is embedded at the top of the base, and a plurality of tube slots I for accommodating the electric heating tubes are formed in the middle of the lower die holder; The lower die is arranged in the die groove, a placing groove is formed in the top surface of the lower die, a plurality of forming grooves are formed in the bottom of the placing groove at intervals, and an upward protruding cambered surface is formed in the center of the bottom of the forming groove; a telescopic power mechanism I for driving the upper die holder to vertically move is arranged between the edge of the bottom surface of the upper die holder and the outer wall of the base, and a plurality of pipe grooves II are formed in the middle of the upper die holder at intervals; A plurality of upper dies positioned right above the forming groove, the top surfaces of the upper dies are fixed on the bottom surface of the upper die holder, and an arc groove is formed in the center of the bottom surface of the upper dies; The bottom of the base is provided with a containing groove, a telescopic power mechanism II is vertically arranged in the containing groove, the top end of the telescopic power mechanism II is fixedly provided with a driving plate, a plurality of ejector pins are vertically and fixedly arranged on the top surface of the driving plate, and the top ends of the ejector pins penetrate through the lower die holder and the lower die and then extend to the bottom of the forming groove; And the lower die base and the lower die between two adjacent forming grooves are respectively provided with a heat dissipation hole, the air inlet end of the heat dissipation hole is positioned at the top of the accommodating groove, and the air outlet end of the heat dissipation hole is positioned at the bottom of the forming groove. The technical problem to be solved by the utility model can be further solved by the following technical scheme, namely the sound membrane hot press forming machine, wherein the pipe groove I and the pipe groove II are horizontally arranged. The technical problem to be solved by the utility model can be further solved by the following technical scheme, in the above-mentioned sound membrane hot press forming machine, the telescopic power mechanism I and the telescopic power mechanism II are respectively provided with a pair. The technical problem to be solved by the utility model can be further solved by the following technical scheme, namely the sound membrane hot press forming machine, wherein the driving plate is horizontally arranged. Compared with the prior art, the utility model has the beneficial technical effects that: (1) The structure effectively solves the problem of uneven heating caused by traditional single downward heating, and is matched with the accurate alignment design of the arc-shaped groove of the upper die and the arc-shaped surface of the forming groove of the lower die, so that the thermal expansion coefficients of all parts of the material are consistent in the hot pressing process, the thickness uniformity and the reasonable s