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Magnetic coil welding method

A technology of magnetic coil and welding method, applied in electrical components, printed circuit manufacturing, printed circuit and other directions, can solve the problems of wire head separation, wire head detachment, solder joint tin short circuit, etc., to prevent short circuit and open circuit, high production efficiency, Guaranteed effect of reliability

Active Publication Date: 2018-07-20
DONGGUAN LEADER PRECISION IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, surface mount electronic components usually need to be heated in a reflow oven, so this method has the hidden danger of unreliable soldering: after soldering, it is necessary to brush tin on the solder joints. If the soldered magnetic coil is heated again, the tin will be heated Melting flows to the surroundings, and there is a hidden danger of tin short circuit between adjacent solder joints. Moreover, after the tin is lost, the wire ends welded on the conductive area are easily separated from the conductive area due to their own tension, resulting in an open circuit of the product; if the tin is not brushed after soldering , the reliability of the solder joint is low, and the wire head is easy to detach from the conductive area

Method used

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Embodiment approach 1

[0020] In the first embodiment, the insulating base 1 is provided with a cutting groove 112 on the side wall 11 for cutting off the excess leads 41, which can be cut by a blade or a laser beam. After adding solder to the solder tank 14, it also includes cutting off the excess leads 41 , The insulating base 1 is taken out from the holder 3. Since the insulating base 1 is taken out from the holder 3 in advance, when the solder is heated, the holder 3 does not need to be heated together with the solder, so the heat resistance to the holder 3 is reduced Requirements.

Embodiment approach 2

[0021] In the second embodiment, the insulating base 1 is further provided with a cutting groove 112 on the side wall 11 for cutting off excess leads 41, which can be cut by a blade or a laser beam. After the solder is heated and solidified on the welding plane 21, the method further includes the following steps: The excess leads 41 are cut off, and the insulating base 1 is taken out from the support 3. The difference between this embodiment and the first embodiment is that the support 3 needs to be heated together with solder, which requires relatively high heat resistance of the support 3.

[0022] The bracket 3 is provided with a plurality of supporting bosses 32 in the fixing groove 31, and the side wall 11 of the insulating base 1 is provided with a plurality of assembly grooves 111 that cooperate with the supporting bosses 32.

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Abstract

The invention discloses a magnetic coil welding method. The method includes following steps: an insulation base is provided, the insulation base comprises a plurality of sidewalls and a bottom wall, the plurality of sidewalls and the bottom wall form a containing groove, the insulation base is provided with a plurality of soldering grooves separated from each other at the sidewalls, the insulation base also comprises a plurality of conductive terminals fixed to the sidewalls, and the conductive terminals are provided with welding planes exposed at the soldering grooves, a support with at least one fixing groove is provided, and the insulation base is fixed in the fixing groove; a magnetic coil with a plurality of leading wires is provided, and the magnetic coil is contained in the containing groove; and the leading wires are arranged in the soldering grooves so that the leading wires are positioned above the welding planes. The method also includes following steps: the leading wires and the welding planes are integrally welded via a welding head; insulating layers positioned on the surfaces of the leading wires of the soldering grooves are removed; solder is added into the soldering grooves, and the solder is fixed on the soldering planes via heating. The welding method is reliable, and the production efficiency is high.

Description

Technical field [0001] The invention relates to a welding method for electronic components, in particular to a magnetic coil welding method. Background technique [0002] The existing patent number ZL201110162314.8 discloses a method for welding a magnetic coil, which includes the following steps: providing a magnetic coil with several wire ends; providing electrical connection parts with several conductive areas; and providing a laser laser device Provide a welding equipment; align the wire head and the conductive area one by one, and the section corresponding to the wire head and the conductive area is defined as the welding section. The laser laser equipment removes the paint of the welding section; using the welding equipment to weld the welding section of the wire head to the conductive area on. Since the paint of the welding section is removed in advance, the welding section is not easily deformed during the final welding process, thereby ensuring the good tensile strength...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H05K3/34
CPCH05K3/3494H05K2203/0455
Inventor 朱帝宏孔晓
Owner DONGGUAN LEADER PRECISION IND