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A method of soldering and encapsulating inner leads of in-line magnetic components

A technology for soldering packaging and inner pins, applied in electrical components, circuit/collector parts, connections, etc., can solve the problems of unstable product quality, low production efficiency, shortened production process, etc., to save manpower and improve production. Efficiency, the effect of simplifying the production process

Active Publication Date: 2018-01-30
CHONGQING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention provides a method for soldering and packaging the inner leads of in-line magnetic components, which improves and optimizes the traditional in-line magnetic components in view of the large shape and structure of in-line magnetic components and relatively long pins. The manual or semi-automatic production process of the device realizes the simultaneous paint removal and welding of the inner pin and the winding enameled wire, shortens the production process, and solves the problems of low production efficiency and unstable product quality in the prior art, including the following process steps:

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] A method for welding and packaging inner leads of an in-line transformer, comprising the following steps:

[0016] (1) The magnetic wire package of the pre-wound enameled wire of the in-line transformer, the grouped enameled lead wire of the magnetic wire package is wound 2 times and fixed on the inner pin of the plastic shell, and then evenly coated with melamine alkyd varnish, passed through the dot The melter injects SL8303 high-temperature resin into the magnetic wire pack, fills and covers the magnetic wire pack, and initially seals and fixes it with the plastic shell. At the same time, leave a length of 1.2mm for the inner pin, and the resin covering thickness is 0.6mm higher than the magnetic wire pack. Curing in air at 100°C for 40 minutes;

[0017] (2) Put (1) the semi-finished product after the initial sealing, with the inner pin facing down, in the pre-designed fixture, and use the dip soldering process to first immerse the inner pin in the water-based no-cle...

Embodiment 2

[0023] A single-in-line inductance component welding and packaging method for inner leads, comprising the following steps:

[0024] (1) The enamelled lead wire of the pre-wound enameled wire of the single-in-line inductive component is wound 3 times on the inner pin of the plastic shell and fixed, and then injects TH-873 epoxy resin through the dispenser In the magnetic wire bag room, fill and cover the magnetic wire bag, and initially seal and fix it with the plastic shell. At the same time, leave a length of 1mm for the inner pin, and the resin covering thickness is 0.5mm higher than the magnetic wire bag. Curing in air at 120°C for 15 minutes;

[0025] (2) Place the semi-finished product after initial sealing in (1) with the inner pin facing down, and place it in a pre-designed fixture. Use the dip soldering process to first immerse the inner pin in rosin-type no-clean flux for 1 second, and then immerse it vertically at a temperature of Dip in lead-free Sn-Cu solder at 410...

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PUM

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Abstract

The invention discloses an inner pin wire welding encapsulation method of a plug-in magnetic component, and relates to the technical field of the manufacturing of the magnetic components. The method comprises the following steps: pre-winding a magnetic coil of an enameled wire of the plug-in magnetic component, twisting a grouped enameled lead wire of the magnetic coil on an inner pin of a gluey shell to fix, and then cladding the magnetic coil through the resin, and initially encapsulating and fixing with the gluey shell, and meanwhile, leaving a certain length on the inner pin; synchronously removing paint and welding the inner pin and the twisted enameled wire, overturning, and then plating tin on an outer pin; cleaning, drying; checking and testing; and finally encapsulating, printing code and packaging. Through the adoption of the method disclosed by the invention, the production process of the plug-in magnetic component is simplified, the manufacturing flow is shortened, the automatic continuous production can be easily realized, the production efficiency is high, the yield is high, and the production cost is low.

Description

technical field [0001] The invention belongs to the technical field of manufacturing magnetic components, and in particular relates to an inner pin welding and packaging method for in-line magnetic components. Background technique [0002] In the existing technology, the in-line electromagnetic components all adopt the traditional production process, that is, the artificial wire winding method is usually used when conducting the conduction connection of the inner terminal pins, and the grouped lead wires need to be twisted together after the coil is wound. Finally, connect the coil lead wire with the inner lead wire of the shell by winding the wire. There is a groove on the lead column of the inner pin, and the enameled wire is wound on the groove to perform high-temperature soldering peeling of the enameled wire. After dipping and fixing, it is cleaned, dried, and inspected. , and finally plastic-encapsulated and cured. Dip soldering is produced by hand, soldering first an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01F41/10H01R43/02
CPCH01F41/10H01R43/02
Inventor 杨栋华甘贵生罗怡杜长华张春红江馨史云龙
Owner CHONGQING UNIV OF TECH