Welding equipment of printed circuit board for electrical element manufacturing

Abstract

The invention discloses welding equipment of a printed circuit board for electrical element manufacturing, and belongs to the technical field of welding and manufacturing of electronic parts and printed circuit boards. According to the welding equipment of the printed circuit board for the electrical element manufacturing, a mold disc is arranged at the other end of a spray pipe, the mold disc is composed of a pair of horn-shaped mold petals connected in a rotating mode, and before welding, the mold disc is placed at a welding hole punched in advance and is in complete butt joint with the welding hole; a feeding gun is matched with the spray pipe to inject a proper amount of solder paste into a bonding pad cavity of the mold disc, then a semiconductor chilling plate is matched with a heat conduction pipe to heat the mold disc, the solder paste is promoted to be fused to form a welding spot, then the semiconductor chilling plate is used for refrigerating the mold disc so as to promote cooling forming of the welding spot, fusion and cooling operation can be achieved in the welding process, operation is simple, the mold disc is used as a welding template, fixed-point forming of the solder paste is promoted, the phenomena of pseudo soldering and outward protrusion caused by excessive solder are not prone to being caused, formed welding spots are independent, bridging of the welding spots is not prone to being caused, and welding quality is improved.

Description

technical field [0001] The invention relates to the technical field of welding and manufacturing of electronic components and printed circuit boards, and more specifically, relates to a welding equipment for printed circuit boards used in the manufacture of electrical components. Background technique [0002] The printed circuit board is an important electronic component, a support for electronic components, and a carrier for electrical interconnection of electronic components. Because it is made using electronic printing, it is called a "printed" circuit board. After printing, the circuit board has no parts at the beginning and cannot be used. It is necessary to weld electronic parts on the printed circuit board to form electrical components. [0003] At present, most people directly place the printed circuit board on the workbench, and then solder the electronic parts to the printed circuit board. There are two different soldering methods in the prior art: one is to appl...

AI Technical Summary

Problems solved by technology

[0004] Method 1 is relatively cumbersome to operate. Although the operation of Method 2 is relatively simple, the molten solder is given directly. If the operation is slightly improper, such as too much or too little material, it is easy to cause virtual welding or the surface of the solder joint is easy to protrude outward. phenomenon, and the solder is used too much, if it spreads out of the pad, it will cause accumulation near the solder joint, which will cause bridging. Bridging is a serious welding defect. It causes two solder joints that should not have electrical contact to have Electric contact, resulting in unsatisfactory welding effect

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