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

A technology for making tools and fuses, which is applied in the manufacture of fuses, etc. It can solve problems such as poor fusing performance, inability to pour quartz sand, and inability to make fuses, etc., to achieve the effect of expanding the actual application environment and improving the consistency of fusing

Active Publication Date: 2020-04-17
NANJING SART SCI & TECH DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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.

Method used

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] like figure 1 Shown is a three-dimensional schematic diagram of a ceramic tube structure ultra-miniature fuse in the present invention, figure 2 for its cross-section. The metal melt 2 passes through the interior of the ceramic tube 1 and is electrically connected with the end caps 3 at both ends with metal solder 4. The interior of the ceramic tube 1 is filled with an arc-extinguishing material 5 to improve the fusing characteristics and breaking capacity of the product.

[0041] The arc extinguishing material 5 is to use liquid silica gel or melamine formaldehyde resin as a dispersion solvent, add at least one of melamine resin powder, magnesium hydroxide flame retardant, aluminum hydroxide flame retardant, or fumed silica powder, to improve The arc-quenching properties of the material, increasing the slurry viscosity and / or reducing the thermal conductivity of the slurry.

[0042] Further, the formula of the arc extinguishing material 5 slurry is 1:0.03-0.2 (wt%),...

Embodiment 2

[0045]The manufacturing method of ceramic tube structure ultra-miniature fuse of the present invention comprises the following steps:

[0046] 1) Porcelain tube threading: first put the ceramic tube 1 on a special jig (such as image 3 ), and then pass the required metal melt 2 sequentially through each row of ceramic tubes 1 by means of threading needles to obtain a series of ceramic tubes; image 3 The porcelain row jig described is a jig with one end made of wear-resistant materials such as metal, which is opened to the edge of the jig, with a width equal to the width of the ceramic tube and a thickness equal to the thickness of the ceramic tube. The purpose is to facilitate mass production of products. The operation of piercing molten metal 2.

[0047] 2) Porcelain tube winding: the porcelain tube string obtained in 1) is neatly wound on the tube winding jig bar, so that the ceramic tubes 1 are arranged sequentially on both sides of the jig bar, and fixed by the metal mel...

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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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01H69/02
CPCH01H69/02
Inventor 南式荣刘明龙
Owner NANJING SART SCI & TECH DEV
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