How to make a headphone plug
A technology of earphone plugs and pins, which is applied in the direction of coating, etc., can solve the problems of poor structural strength and stability of SR buckle, and achieve the purpose of ensuring the firmness and reliability of the connection, improving the performance of tensile strength and hardness, and improving stability and the effect of structural strength
Active Publication Date: 2022-07-01
RISUNTEK INC
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- Application Information
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Problems solved by technology
[0003] The production of the existing earphone plug is generally to carry out one-time injection molding on the junction of the plug and the wire, resulting in poor structural strength and stability of the formed SR buckle
Method used
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Embodiment Construction
[0075] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.
[0076] like Figure 1 to Figure 7 As shown, a mold for making an earphone plug includes an inner mold forming mold 30, an SR button forming mold 10 and an outer mold forming mold 20, wherein:
[0077] like image 3 As shown, the inner mold 30 is provided with a first cavity, and the inner wall surface of the first cavity is concave with a groove; preferably, the inner mold 30 has a molding upper mold 31 and a molding lower mold Mold 32, the upper molding mold 31 has an upper molding cavity, the lower molding mold 32 has a lower molding cavity 321, the lower molding cavity 321 and the upper molding cavity form a first cavity, and the inner cavity of the lower molding cavity 321 is formed. The aforementioned groove 322 is recessed on the wall surface.
[0078] like Figure 7 As shown, the metal shell 50 has a shell body 51 and a spherical cap 5...
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The invention relates to a method for making an earphone plug, which includes the following steps: preparing an inner mold forming mold, an SR button forming mold, an outer mold forming mold, a metal shell, pins and wires, and a first cavity of the inner mold forming mold is set. The metal shell has a spherical cap; then the wire is connected to the pin and injection molded to form an inner mold with an undercut; followed by a second injection molding, the inner mold and the wire close to the inner mold end are covered The SR button is positioned; the third injection molding is performed, and the inner mold and the SR button near the inner mold end are covered and positioned with an outer mold; finally, glue is dispensed, and then assembled with the metal shell, and the inverted button fits in the overflow groove. , the spherical cap is circumferentially limited to the inner mold and the outer mold; it achieves the stability of the SR buckle through multiple molding, and also greatly improves the tensile strength and hardness of the subsequent products; it can also ensure The connection between the metal shell and the pin wire assembly covered with the outer mold is firm and reliable.
Description
technical field [0001] The invention relates to the technical field of an earphone plug, in particular to a method for making an earphone plug. Background technique [0002] Headphones are one of the indispensable accessories for portable electronic products (such as mobile phones, MP3 players, PDAs, etc.), and their structure includes a headphone plug for receiving electronic signals and converting electronic signals into sound waves. signal speaker. At present, the most common headphone plugs can be divided into three-section type and four-section type. The three-section type is mainly used for mono headphones, and the four-section type is suitable for stereo headphones. Each section on the headphone terminal is a signal interface, and through the headphone socket connected to the electronic product, the electronic signal can be transmitted interactively with the electronic product. [0003] The production of the existing earphone plug is generally one-shot injection mol...
Claims
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IPC IPC(8): B29C45/16B29C45/14B29C45/26B29C33/12B29C45/34B29C45/27
CPCB29C45/1615B29C45/1671B29C45/14065B29C45/26B29C45/2725B29C45/345
Inventor 沈庆凯胡洪群
Owner RISUNTEK INC