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A method for through-hole reflow soldering

A welding surface and spot welding technology, applied in the direction of assembling printed circuits with electrical components, to achieve the effects of high welding quality and reliability, ensuring welding quality, and simple and convenient operation.

Active Publication Date: 2019-09-24
NO 709 RES INST OF CHINA SHIPBUILDING IND CORP
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Problems solved by technology

[0008] The purpose of the present invention is to provide a method for through-hole reflow soldering in order to make up for the deficiencies of the prior art, mainly to solve the problem of through-hole soldering on the PCB board of non-high-temperature-resistant connectors whose pin length is less than the thickness of the PCB board

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  • A method for through-hole reflow soldering
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  • A method for through-hole reflow soldering

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Embodiment Construction

[0041] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0042] Such as figure 1 As shown, the present invention provides a method for through-hole reflow soldering, which is carried out according to the following steps:

[0043] S1, determine the connector and the through hole on the corresponding PCB board;

[0044] S2, use manual welding to seal the through hole corresponding to the welding surface of the PCB board by spot welding;

[0045] S3, return the solder paste to the temperature and stir evenly, and then use the pusher to push the solder paste into the through hole after spot welding in step S2;

[0046] S4, inserting the connector...

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Abstract

The invention provides a reflow welding method for through holes, which is used mainly to solve the welding problem of a non-high-temperature-resistant connector of which the pin length is less than the thickness of a PCB in the corresponding through holes of the PCB. First, the through holes of a PCB corresponding to the pins of a connector are spot-welded on the welding surface of the PCB and are thus sealed, and solder paste is pushed by a pusher from the component surface of the PCB into the corresponding through holes. Then, the pins of the connector are inserted into the through holes filled with solder paste, and the connector is fixed to the PCB with a high-temperature-resistant tape. Finally, the corresponding holes in the welding surface of the PCB are heated by a piece of heating equipment in a single-sided manner for reflow welding. The welding method of the invention ensures the integrity of the non-high-temperature-resistant connector, and has the advantages of simple andconvenient operation process and high welding quality and reliability.

Description

technical field [0001] The invention relates to a welding method for through-hole connectors, in particular to a through-hole reflow welding method for non-high-temperature-resistant connectors on PCB boards when the length of the pins of the non-high-temperature-resistant connectors is smaller than the thickness of the PCB board . Background technique [0002] Existing connectors are usually soldered by manual soldering, wave soldering or through-hole reflow soldering. Among them, in order to ensure a good welding effect, the wave soldering has strict requirements on the length of the connector. The welding of the connector is carried out by means of repair welding; in another case, when the connector is a non-high temperature resistant component, the connector can only be welded by manual welding. Connectors, although manual welding can barely complete the welding, there are many shortcomings: [0003] 1. Because the connector does not come out of the pin, it cannot mee...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H05K3/34
Inventor 程虎
Owner NO 709 RES INST OF CHINA SHIPBUILDING IND CORP