A high uniformity automatic powder coating production line and its spraying method

Abstract

The invention discloses a high-uniformity automatic powder spraying production line and a spraying method thereof, comprising a conveying line for transporting workpieces to move on the production line, auxiliary feeding equipment arranged in sequence according to the workpiece spraying process, a pre-painting treatment system, The powder spraying system, curing system, feeding auxiliary equipment and the control center used to control the overall operation of the production line are installed with detectors in the spraying production line, and the signals detected by the detectors are sent to the powder supply center and the electric control center, and then Control the spraying powder volume and powder voltage when the spray gun is spraying. Through the cooperation of the detector, the spray gun runs to the top and bottom of the workpiece for spraying operations. The detector controls the powder spraying volume and powder voltage by detecting the change of the spraying speed of the spray gun. , so that the overall spraying of the workpiece is uniform and the spraying effect is good.

Description

technical field [0001] The invention relates to a spraying production line, in particular to a high-uniformity automatic powder spraying production line and a spraying method thereof. Background technique [0002] Since powder spraying uses electrostatic spraying operations, the spraying production line can be almost fully automated, saving human resources. Even if manual assistance is required, sprayers can master operational skills without long-term training. The powder coating is 100% solid, without adding any solvent, so the amount of coating is reduced, packaging is saved, and storage space is reduced. [0003] Compared with liquid coatings, the energy cost of powder coatings is greatly reduced due to the absence of organic volatiles, which avoids the waste caused by volatilization into the atmosphere. Spray the powder coating onto the surface of the workpiece with an electrostatic powder spray gun. Under the action of static electricity, the powder will be evenly ads...

AI Technical Summary

Problems solved by technology

[0004] However, there are some defects in the existing automatic powder spraying control technology, which cannot effectively control the coating thickness at the upper and lower ends of the workpiece. Often, the upper and lower ends of the workpiece will be too thick due to the thickness of the sprayed coating, which will cause the upper and lower ends of the workpiece If there are defects such as orange peel, cracks, pinholes, flow marks, etc., the color and gloss will also be affected, and the workpiece has obvious defects such as zebra crossings under natural light, and the spraying effect is not ideal.

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