Automatic spraying production line for titanium alloy thermal forming protective coating and spraying technology

Abstract

An automatic spraying production line for a titanium alloy thermal forming protective coating is characterized by specifically comprising seven functional modules including a control system, an annular assembly line, two spraying chambers, a coating supply system, a workpiece feeding / discharging and overturning combined station, a hot air drying system and an exhaust system. A spraying technology of the automatic spraying production line for the titanium alloy thermal forming protective coating comprises the steps that a PLC is matched with a travel switch, a photoelectric proximity switch and a distance sensor, the strokes and positions of a workpiece and a mechanical part are detected, a technological process diagram is compiled, control logic is set, and a ladder diagram is drawn on the basis; on the basis, coordination control is carried out on all subsystems through the preset program, and automation of the technological process is achieved. The automatic spraying production line and the spraying technology have the advantages that the labor cost is reduced, and the potential safety hazard of personal health is eliminated; and the brushing uniformity degree is greatly superior to that of a manual brushing mode, and the part brushing quality is greatly improved.

Description

technical field [0001] The invention relates to the field of spraying, in particular to an automatic spraying production line and a spraying process of a titanium alloy thermoforming protective coating. Background technique [0002] In the stamping and forming process of titanium alloy parts at the production site, in order to prevent the surface oxidation of the titanium alloy sheet during high temperature heating (above 600 degrees Celsius) before stamping and the scratches caused by the extrusion of the die during the die stamping process, the parts need Apply the protective coating in the order of applying the antioxidant first and then the graphite lubricant. [0003] In the original process, workers were required to paint manually, the brushing operation was random, and the quality consistency of the coating was poor. Between two brushings and after brushing with graphite lubricant, it needs to be dried naturally for at least 3 hours, and the next step can only be car...

AI Technical Summary

Problems solved by technology

The drying time of the coating is greatly affected by the environment and temperature of the workshop, and the labor intensity is relatively high. Under the existing human resource conditions, it is difficult to guarantee the work efficiency

In addition, the antioxidants painted in the process contain organic solvents. Operators exposed to environments with high concentrations of volatile solvents for a long time must wear protective equipment, which poses certain occupational health and safety risks.

[0004] At the present stage, the part-hanging rotary type and the manipulator-clamped spray gun spraying process adopted by the mainstream commercial automated coating line cannot meet the needs of the site. The clamping part is easy to be damaged, the coating cannot be covered and other disadvantages; secondly, if the manipulator used for 3D spraying is used, it will cause waste of functions, and will lead to a significant increase in procurement and maintenance costs, and the cost performance is low

The common automated coating lines currently on the market are not suitable for the actual process requirements of small-sized titanium alloy sheets on the production site

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