Sound film molding pressing die for loudspeaker

Abstract

The invention provides a sound film molding pressing die for a loudspeaker, consisting of an upper die part and a lower die part. The lower die part consists of a lower die head, a movable pressing sleeve, a reset spring and a lower template, wherein the lower die head comprises a molding die body and a bearing column; the molding die body consists of a lower molding surface and a lower plunger ring; the movable pressing sleeve is sleeved on the molding die body and the bearing column; the reset spring is sleeved on the bearing column, and is positioned between the movable pressing sleeve and the lower template; and an upper die head is coaxial with the lower die head. Because the movable pressing sleeve and the reset spring are additionally arranged in the lower die head part, when the sound film is pressed, grey cloth to be molded is firstly compacted by an upper plunger ring and the movable pressing sleeve so as to ensure that the peripheral cloth is stressed uniformly and then is subject to drawing and compression moulding. Therefore, the folding phenomenon on the periphery of a sound film finished product can be eliminated, the sound film molding pressing die can be operated only by one person, the finished product can be automatically demoulded, and the operation is safe, convenient, and labor-saving.

Description

Technical field: [0001] The invention relates to a mould, in particular to a mold for forming and pressing a loudspeaker sound film. Background technique: [0002] The sound film used on the speaker is generally made of deep-drawn materials such as rubber-impregnated paper, fiber and aluminum film. The reason why the speaker can produce sound is that the sound film plays an important role. The sound film is the key to the sound and characteristics. important factors of quality, such as figure 1 It is a schematic diagram of the structure of the sound membrane, which is composed of a corrugated plate 91 , an arc convex body 92 and a blank holder 93 . Conventional sound film forming pressing mold is made up of upper mold part and lower mold part, and upper mold part is made up of upper die head 2 and upper die head 3, and upper die head 3 is fixed on the upper die head 2; Lower die part is made of lower die head 4 It is composed of the lower template 7, and the lower die head...

AI Technical Summary

Problems solved by technology

During the pressing process, wrinkles are easily produced around the sound membrane, and the greater the depth of the sound membrane, the higher the proportion of wrinkles. This is the main process of producing waste or defective products in the production process of the sound membrane. When this type of defect occurs, the sound film will not be tightly connected to the voice coil when the speaker is assembled and glued, which will affect both the sound quality of the speaker and the appearance quality

At the same time, the existing sound film forming and pressing mold requires two people to cooperate in the process of pressing the sound film. If the cooperation is not good, it is easy to cause work-related accidents, which will bring great harm and loss to the operator and the enterprise.

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