A kind of film cleaning brush and cleaning method for pcb circuit board

Abstract

The invention discloses a film cleaning brush for PCB circuit boards and a cleaning method thereof. The cleaning brush includes a brush body and a brush head; one end of the brush body is detachably connected to the brush head, and the other end is connected to a cleaning device through a pipeline. The brush body is connected to the container of the cleaning agent; the brush body introduces the cleaning agent and evenly wets the brush head, and the brush head carries the cleaning agent to clean the film by operating the brush body. The cleaning method includes holding the film cleaning brush firmly and keeping the brush head vertically downward during cleaning; repeatedly operating the sliding sleeve to squeeze the brush head, so that the cleaning agent flows to the brush head under the action of gravity and pressure and the brush head is evenly moistened; Press the film cleaning brush on the film, causing the fine-pore elastic pad to elastically deform. The flow of cleaning agent into the brush head increases, and the cleaning purpose is achieved by repeatedly wiping back and forth on the film. The invention has a simple structure, is convenient and reliable to use, can effectively avoid direct contact between the cleaning agent and the human body, further reduces the waste of cleaning agent, and obtains better cleaning effects.

Description

technical field [0001] The invention relates to the technical field of film cleaning, in particular to a film cleaning brush used on a PCB circuit board and a cleaning method thereof. Background technique [0002] At present, the PCB manufacturing industry is mainly based on the etching and subtractive method. Whether it is a negative film or a positive film, it is necessary to use a film film for exposure and development, so as to realize the circuit pattern. As the electronics industry develops toward small size, precision, and multi-function, printed circuit boards will also develop toward high precision in order to meet the needs of the electronics industry. When transferring computer-aided design (CAD) graphics to the film, if there is stain on the printing equipment or the film sheet, or damage and pollution are caused during transportation, the graphics of these film films need to be further repaired. In the repairing process, it is often necessary to use a film pen ...

AI Technical Summary

Problems solved by technology

Due to the influence of human factors, there will be too much liquid medicine in some positions, which will easily damage the strokes on the film film

In addition, due to the volatile nature of film cleaning agents, pouring a large amount of film cleaning agents on the film film will not only cause a large amount of volatilization and waste of liquid medicine, but also be easily inhaled by the human body, causing harm to the body

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