Full-automatic coating system for conformal coating and control method of full-automatic coating system

Abstract

The invention discloses a full-automatic coating system for a conformal coating and a control method of the full-automatic coating system. The full-automatic coating system comprises a coating machinerack, a three-axis moving platform, a PCB transmitting and positioning component, a control box, a conformal coating harmful gas filter system and a spraying valve; a ball screw and pneumatic slidingtable component in the Z direction of the three-axis moving platform is installed on a ball screw moving component in the X direction; the ball screw moving component in the X direction is installedon a ball screw moving component in the Y direction; the ball screw moving component in the Y direction is installed on a supporting plate through a portal frame; the spraying valve is installed on the ball screw and pneumatic sliding table component in the Z direction; the PCB transmitting and positioning component is installed on the supporting plate; and the conformal coating harmful gas filtersystem is installed in a lower box body. The full-automatic coating system disclosed by the invention can realize a uniform coating effect, high marginal definition and high coating thickness precision and is reasonable in structural design; the negative-pressure effect of the equipment is obvious; waste gases are emitted to the atmosphere after secondary filtration; and the environmental protection is greatly improved.

Description

technical field [0001] The invention relates to circuit board coating equipment, in particular to a fully automatic coating system for conformal paint and a control method thereof. Background technique [0002] As the size of PCBA components is getting smaller and smaller, the density is getting higher and higher; the height of the device and the height of the device (the distance between the PCB and the ground clearance) is also getting smaller and smaller, and the environmental factors affect the PCBA. The impact is also increasing, such as humidity, dust, salt spray and mold, etc. have great harm to the life of PCBA. Customers have put forward higher requirements for the reliability of electronic product PCBA, and now more and more Customers require conformal paint spraying, which has become an indispensable process for PCB processing. However, manual brushing is only suitable for small batch production, and has higher requirements for process operators. It is suitable f...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide an online selective full-automatic solution for spraying the conformal paint on PCB boards, and to design a fully automatic conformal paint coating system, which can be applied to 50- PCB boards with different widths of 500mm, and the coating of PCB boards to achieve full-board, jigsaw and selective assembly-line job coating, needs to achieve uniform spraying effect, high edge definition, high precision of spraying thickness, and the error is within 10μm Below, the average programming time is controlled within 1 hour to improve production efficiency and make a relatively closed space a negative pressure environment so that the polluted air does not leak to the outside environment, and it needs to be filtered to be discharged to the atmosphere

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