Progressive die of earphone front cover fixing steel ring

Abstract

The invention relates to a progressive die for an earphone front cover fixing steel ring, which comprises a lower die and an upper die, and a cutting station, an inner bending station, a half cuttingstation and an outer bending station are sequentially arranged between the lower die and the upper die; the cutting station comprises a cutting hole vertically formed in the upper side of the lower die and a cutting column vertically and fixedly connected to the lower side of the upper die, and the shape of the bottom face of the cutting column is the same as that of the cutting hole. The inner bending station comprises an upper side jacking column vertically and fixedly connected to the lower die and a pressing hole vertically formed in the lower side of the upper die. The half-cutting station comprises two arc-shaped grooves formed in the upper side of the lower die and arranged in the advancing direction of the workpiece and two cutters fixedly connected to the lower side of the upper die and capable of being inserted into the two arc-shaped grooves respectively. The outer bending station comprises a positioning sleeve vertically arranged in the lower die and an inserting ring vertically arranged on the lower side of the upper die. The progressive die has the advantages that operation is easy, the workpiece is integrally formed, multiple devices are not needed, and the machiningcost is low.

Description

technical field [0001] The invention relates to the technical field of earphone parts, in particular to a progressive die for fixing a steel ring on a front cover of an earphone. Background technique [0002] Headphones are a pair of conversion units that accept electrical signals from a media player or receiver and convert them into audible sound waves using speakers close to the ears. Headphones are generally detachable from the media player, connected using a plug. The advantage is that you can listen to the sound alone without affecting others; it can also isolate the sound of the surrounding environment, which is very helpful for those who use it in noisy environments such as recording studios, bars, travel, sports, etc. Headphones were originally used for telephones and radios, but with the prevalence of portable electronic devices, headphones are mostly used in mobile phones, walkmans, radios, portable video games and digital audio players. [0003] An existing fixe...

AI Technical Summary

Problems solved by technology

[0004] The above-mentioned existing technical solutions have the following defects: since the fixed steel ring is mainly used for earphones, the fixed steel ring is small, it is difficult to take and keep the position during processing, and it is easy to cause poor precision of the processed product. In addition, a variety of The equipment processes the fixed steel ring, the cost of the processing equipment is high, and the operation is complicated

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