Mold for forming loudspeaker sound film and manufacturing method thereof

Abstract

The embodiment of the invention discloses a loudspeaker voice diaphragm forming die, and the die comprises a die body. The bottom surface of the die body is provided with a ventilation groove. The die body is also provided with a gap passing through the die body, and the ventilation groove is communicated with the gap. Moreover, the section area of the ventilation groove is greater than the section area of the gap, so as to enable the ventilation groove and the gap to form an air exhaust channel. According to the above mode, the bottom surface of the die body is provided with the ventilation groove. Because the die body has the through gap, air will pass through the gap to reach the ventilation groove, and the ventilation groove and the gap form the air exhaust channel, thereby shortening the air exhaust path during the forming of a voice diaphragm, and improving the ventilation performance of the die during forming. Moreover, there is no need to change the thickness of a die material, and the rigidness is improved. The ventilation groove is convenient to manufacture, thereby improving the production efficiency and reducing the production cost.

Description

technical field [0001] The embodiments of the present invention relate to the field of molds, in particular to a mold for forming a speaker sound film and a manufacturing method thereof. Background technique [0002] The sound film has always been the core component in the design of loudspeakers and receivers. Different performances are produced through the vibration of the sound film. In a closed environment, the air pressure is applied to the film in the process of heating and softening to form it in the mold, and the mold Whether the air in it can be completely eliminated directly affects the size of the sound membrane. [0003] At present, the molds for speaker sound film molding are mainly made of metal, among which powder metallurgy steel is the raw material with the best air permeability, and the air will be discharged through the pores between the powders during molding. The material must go through a series of machining processes to achieve mold precision. Since th...

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Problems solved by technology

[0004] The main technical problem to be solved by the embodiments of the present invention is to provide a mold for forming a loudspeaker sound film and its manufacturing method, which can solve the problem of poor air permeability of the mold body for forming a loudspeaker sound film

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