Core-free treatment process for thin-film capacitor

Abstract

The invention belongs to the technical field of capacitor production, and particularly relates to a thin-film capacitor core-free treatment process. Metal spraying equipment used in the process comprises a base, a groove is formed in the top of the base, two horizontal rollers are arranged in the groove, and the two rollers are close to each other and do not make contact with each other; accordingto the invention, a Teflon adhesive tape is bonded on the cylindrical surface of a capacitor core; due to a non-stick property of the Teflon, metal spraying dust naturally falls off from the cylindrical surface of the capacitor core; the capacitor core is placed between the two rollers; the two rollers play a role in supporting and limiting the cylindrical capacitor core; after metal spraying, ahorizontal hydraulic rod is controlled to push the rectangular square groove to move, and in the moving process of the capacitor core, metal spraying dust falling off the cylindrical surface of the capacitor core falls to the bottom of the inner side of the groove, so that rapid collection and cleaning of the metal spraying dust are finally realized, and time for fixing and unfixing the capacitorcore is reduced.

Description

technical field [0001] The invention belongs to the technical field of capacitor production, in particular to a core-free processing technology for thin film capacitors. Background technique [0002] Film capacitors use metal foil as an electrode, and it is laminated with plastic films such as polyethylene, polypropylene, polystyrene or polycarbonate from both ends, and then wound into a cylindrical capacitor. According to the type of plastic film, it is called polyethylene capacitor (also called Mylar capacitor), polypropylene capacitor (also called PP capacitor), polystyrene capacitor (also called PS capacitor) and polycarbonate capacitor. [0003] During the gold-spraying process of film capacitors, the two ends of the cylinder are evenly sprayed with 0.4-0.6mm of zinc or zinc-tin alloy atomized material, and at the same time, gold-sprayed dust is generated or adhered to the cylinder, causing the capacitor core to Package short circuit, the usual solution is to roll more...

AI Technical Summary

Problems solved by technology

[0003] During the gold-spraying process of film capacitors, the two ends of the cylinder are evenly sprayed with 0.4-0.6mm of zinc or zinc-tin alloy atomized material, and at the same time, gold-sprayed dust is generated or adhered to the cylinder, causing the capacitor core to Package short circuit, the usual solution is to roll more than a dozen laps of the outer packaging film after the film capacitor is wound, and then use a blade to remove a few laps of the outer packaging film to solve the problem of core short circuit In view of this, the present invention provides a core-free processing process for thin film capacitors, which does not require subsequent core processing procedures, and can quickly collect and clean the gold spray dust, reducing the time it takes to fix and unfix the capacitor core

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