SMD fuse manufacturing method

Abstract

The invention discloses a surface-mount chip fuse making method. The method comprises the following steps: 1, inner caps are laminated: a porcelain tube and two concave hole caps are provided, and the two concave hole caps are respectively laminated with two ends of the porcelain tube; 2, threading by a fuse wire is carried out: the fuse wire is provided to thread multiple porcelain tubes completing lamination of the inner caps in the first step; 3, winding on a wire threading rod is carried out; 4, welding of the first cap is carried out; 5, filling by quartz sand is carried out; 6, welding of the second cap is carried out; 7, the wire is cut off: the porcelain tube completing second cap welding is rotated to be retreated, and the fuse wire extending outwardly from two ends of each porcelain tube is cut off; and 8, outer caps are laminated: the outer caps are provided and laminated with two ends of the porcelain tube completing wire cutoff. According to the surface-mount chip fuse making method, surface-mount chip fuses can be produced in batch, the production process is simple and quick, and particularly through matching with the cap laminating machine, a wire threading plate and the wire threading rod, the making efficiency is greatly improved, and the production cost is reduced.

Description

technical field [0001] The invention relates to a manufacturing method of a fuse, in particular to a manufacturing method of a chip type fuse which is easy to manufacture, has low cost and wide application range. Background technique [0002] The popularity of power systems has brought convenience to human life, but because of the frequent fire accidents caused by improper use of electricity, the safety of electricity use has been paid special attention. Among them, the fuse plays a very important role in preventing electrical disasters, and its main function is to prevent excessive current from flowing through electronic circuits. The most important characteristic of a general fuse is its carrying capacity. The setting of the maximum carrying capacity of various types of fuses is a statistical value obtained through a series of tests, which can be used as a reference for circuit designers. When the excess current flows When the fuse is used, it will cause it to generate hi...

AI Technical Summary

Problems solved by technology

[0003] Most of the existing common fuse structures are made of glass tubes, with metal shells on both sides of the tube, and metal wires connected inside the two metal shells. very inconvenient

However, the assembly of small-sized fuses is extremely troublesome due to the small number of parts, which makes production difficult and high manufacturing costs.

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