Protective spraying device for PCB (Printed Circuit Board)

Abstract

The invention discloses a protective spraying device of a PCB, which comprises a drying cylinder, wherein a spraying chamber is fixedly welded on one side of the drying cylinder, a spraying mechanismis arranged in the spraying chamber, a discharge port is fixedly welded on the other side of the drying cylinder, a connecting plate and a rotating circular plate are arranged in the drying cylinder,the lower end surface of the drying cylinder is provided with an output component, the output component is fixedly connected with a path changing component, the drying cylinder is provided with a first motor, the output end of the first motor is connected with a first rotating shaft penetrating through the upper top surface of the drying cylinder, the lower end of the first rotating shaft is fixedly welded with a connecting plate, the lower part of the connecting plate is fixedly connected with the rotating circular plate through a first electric telescopic push rod, clamping components are evenly distributed at the upper edge position of the rotating circular plate, and a turnover component which is in transmission connection with the clamping components is arranged on the upper end surface of the rotating circular plate. The protective spraying device for PCB (Printed Circuit Board) is convenient for both the quick and highly effective coating and the quick and complete drying of thetwo sides of the coated PCB plate, so that the PCB is efficiently conveyed and the production efficiency of the PCB is improved.

Description

technical field [0001] The invention belongs to the technical field of printed circuit boards, in particular to a protective spraying device for PCB boards. Background technique [0002] In the process of use and storage, electronic products are required to have good three-proof (mildew-proof, moisture-proof, salt spray) protection capabilities, that is, they must be able to withstand the test of humidity, mold, and salt spray in the environment. In order to make electronic products have good three-proof protection capabilities, it is necessary to make the printed circuit board (PCB board) in electronic products need to be sprayed with three-proof protective coating after debugging. In order to protect the printed circuit board and strengthen the printed circuit The service life of the board. Some of the existing spraying methods for printed circuit boards are manual painting. The brushing operation is to use a brush to dip the paint and then apply it on the printed circuit...

AI Technical Summary

Problems solved by technology

Some of the existing spraying methods for printed circuit boards are manual painting. The brushing operation is to use a brush to dip the paint and then apply it on the printed circuit board. However, the uniformity of manual painting is not easy to guarantee. The substance has a pungent smell, which will damage people's health, and the residue on the brush is also likely to cause problems such as burrs on the printed circuit board; another spraying method is equipment spraying, and the existing equipment spraying will affect the printed circuit board. The circuit boards are coated one by one, the production efficiency is too slow, and the drying after coating is time-consuming

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