Drilling device for keyboard circuit board

Abstract

The invention relates to the field of processing of electronic circuits and particularly discloses a drilling device for a keyboard circuit board. The drilling device comprises a seat body, a first air pipe, a second air pipe and a drilling part, wherein the second air pipe is connected with a control part; a groove is formed in the seat body and is in sliding connection with a limiting part; thefirst air pipe adopts a Venturi tube, an inlet section of the first air pipe is communicated with a fan, and a throat and the inlet section are respectively communicated with the groove through a suction pipe; the control part comprises a first air inlet pipe and a second air inlet pipe; a pneumatic block is in sliding connection with the interior of the second air inlet pipe; an extrusion block is fixed on the pneumatic block, wedge surfaces which are mutually matched are formed on the extrusion block and the limiting part; the control part comprises a first station and a second station and is connected with the second air pipe through a reversing valve, the second air inlet pipe is communicated with the second air pipe when the reversing valve is positioned on the first station, and boththe second air inlet pipe and the first air inlet pipe are communicated with the second air pipe when the reversing valve is positioned on the second station. The drilling device disclosed by the invention can automatically cool the circuit board and remove chippings.

Description

technical field [0001] The invention relates to the field of electronic circuit processing, in particular to a drilling device for a keyboard circuit board. Background technique [0002] Traditional circuit boards are generally made by printing silver wires on the surface of the base material. The defect rate of printed silver wires is very high, the production process is complicated, and the circuit boards made are poor in waterproof ability and high in cost. In addition, there is also an etching method to form a circuit on the surface of the electric board. At present, the steps of electric board etching generally include: 1) coating a conductive layer on the surface of the substrate; 2) drilling holes on the electric board after the conductive layer is formed, so as to Provide mounting holes for parts; 3) Etching the conductive layer on the surface of the substrate. The conductive layer formed in the above step 1) is usually cooled and condensed by high-temperature silve...

AI Technical Summary

Problems solved by technology

In addition, after drilling the electric board, debris will remain on the workbench. In order to prevent the debris from sticking to the silver paste and damaging the conductive layer when the silver paste is applied, manual cleaning is required after each hole is drilled. The workbench is cleaned, so it is also inconvenient for the operator

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