A kind of tubular ultra-miniature fuse manufacturing tool and manufacturing method

Abstract

The invention provides a method of making a tubular ultra-miniature fuse using a making tool. The method includes the following steps: neatly arranging ceramic tubes in columns in a ceramic tube arrangement fixture, and threading a metal melt needed through the ceramic tubes in columns with the aid of a threading needle to get a ceramic tube string; winding the metal melt in the ceramic tube string on a tube winding fixture bar to arrange and fix the ceramic tubes on the two sides of the fixture bar in order; immersing the tube winding fixture bar wound with the ceramic tubes in arc extinguishing material slurry to enable the arc extinguishing material to fill the ceramic tubes; heating and curing the ceramic tubes filled with the arc extinguishing material at constant temperature in an incubator; taking down the cured product from the tube winding fixture bar, cutting off the metal melt along the end face of each ceramic tube, and getting independent ceramic tubes with metal melts inside through separation; and press-fitting end caps with molten solder on the two ends of the ceramic tubes with metal melts, and assembling the ceramic tubes into a fuse.

Description

technical field [0001] The invention relates to a fuse technology, in particular to a tubular ultraminiature fuse manufacturing tool and a manufacturing method. Background technique [0002] A fuse is a device composed of a melt and an insulator that supports or protects the melt. It uses a metal material or paste with a lower melting point to make a metal wire or a sheet electrode as a melt, which is connected in series in the protected circuit. , when the circuit or equipment in the circuit is overloaded or fails, the melt is instantly fused due to heat, thereby cutting off the circuit and achieving the purpose of protecting the circuit or equipment. Common overcurrent protection components are mainly used in overcurrent protection devices of related equipment such as mobile phones and computers and peripheral equipment (such as hard disks, printers, etc.), digital cameras, LED lighting, battery packs and other related equipment. [0003] The ceramic tube structure fuse w...

AI Technical Summary

Problems solved by technology

The use of such a structure has a size limit, and the size cannot be made smaller. When the use environment requires the fuse to reach a smaller size (for example, 3.2*1.6mm*1.6mm or less), the structure and technology of the prior art cannot make such a fuse. A kind of tubular fuse, one is that quartz sand cannot be poured into the tube with a small volume, and only fluid arc-extinguishing materials can be used; the other is that the jig in CN205140887U is used to wind the threading rod, and the fuses are all attached to the inner wall of the tube, and the heat dissipation is too good , resulting in poor fusing performance

However, our company's patent 201410578453.2 needs to set gaps or holes on the porcelain tube to fill the tube with fluid-like arc-extinguishing material, and it is also impossible to make ultra-miniature fuses.

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