Powder film spraying machine

Abstract

The invention discloses a powder film spraying machine, which is formed by high-pressure static ejection gun, a controller, and a powder charging cylinder. The static ejection gun uses internal-arranged high-pressure generator and 5010A / 5010B epoxide resin to fill the U-shaped iron core frame of voltage transformer of high-pressure generator; the control circuit of static controller uses automatic distance-current-voltage control and presets a maximum irradiation current to confirm the best powder charge amount. When the distance between the ejection gun and work-piece reaches the maximum irradiation current, the reduced distance will cause the automatically reduction of output high pressure and ejection current, or else, the output high pressure and ejection current will increase. At the instant of short circuit between the ejection gun and work-piece, the output is reduced to minimum and it will recover to high pressure output to eliminate the problem of sparking after started.

Description

technical field [0001] The invention relates to a surface treatment tool, in particular to various metal casings used in various fields of machinery, tools, instruments, electrical appliances, metal pipes, ships, vehicles, aviation, aerospace, etc. used in human life and production activities A new type of electrostatic powder spraying (coating) machine for anti-corrosion surface treatment and surface protection of structures. Background technique [0002] Electrostatic powder spray film (coating) machine is generally composed of high-voltage electrostatic spray gun, controller, and powder supply cylinder. In the past, the electrostatic powder coating (coating) machine used an external high-voltage generator, which was too bulky, and the spraying effect was poor and the safety performance was low. In recent years, in order to improve the grade of products, some enterprises with a certain scale have higher and higher requirements for surface coating, and have adopted importe...

AI Technical Summary

Problems solved by technology

This kind of pulse high voltage generator has low efficiency, low load capacity and easy to generate heat

In addition, there are still some hidden dangers in terms of environmental protection and the quality of sprayed products (workpieces), such as: "Flange" shielding, low powder coating rate, low powder recovery rate, uneven coating, "orange peel", Difficult to re-spray, high scrap rate, easy to produce "ignition" unsafe and other problems that are difficult to completely eliminate, this is far from meeting the requirements for the surface treatment and protection quality of the workpiece (product) to be sprayed, affecting the product ( The inner quality and appearance effect of workpiece)

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