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The seven major components of the painting assembly line mainly include: pre-treatment equipment, powder coating system, spray painting equipment, oven, heat source system, electrical control system, suspension conveyor chain, etc.

Pretreatment equipment

The spray type multi station pre-treatment unit is a commonly used equipment for surface treatment, which uses mechanical flushing to accelerate chemical reactions to complete processes such as oil removal, phosphating, and water washing. The typical process of spray pre-treatment for steel parts is: pre degreasing, degreasing, water washing, water washing, surface conditioning, phosphating, water washing, water washing, and pure water washing. Pre treatment can also use shot blasting cleaning machines, which are suitable for steel parts with simple structures, severe corrosion, and no or little oil. And there is no water pollution.

Powder spraying system

The small cyclone and filter recovery device in powder spraying is an advanced and fast color changing powder recovery device. It is recommended to use imported products for the key parts of the powder spraying system, and to localize all components such as the powder spraying room and electric mechanical lift.

Painting equipment

Such as oil spray paint booth and water curtain paint booth, widely used for surface coating of bicycles, automotive steel plate springs, and large loaders.

oven

Oven isCoating production lineOne of the important devices in China, its temperature uniformity is an important indicator to ensure coating quality. The heating methods of ovens include radiation, hot air circulation, and radiation+hot air circulation. According to the production schedule, they can be divided into single chamber and through type. The equipment forms include straight through and bridge type. The hot air circulation oven has good insulation, uniform temperature inside the furnace, and low heat loss. After testing, the temperature difference inside the furnace is less than ± 3 ° C, which meets the performance indicators of similar products in advanced countries.

Heat source system

Hot air circulation is a commonly used heating method, which utilizes the principle of convective conduction to heat the oven and achieve drying and solidification of the workpiece. The heat source can be selected according to the specific situation of the user, such as electricity, steam, gas, or fuel. The heat source box can be determined according to the situation of the oven: placed at the top, bottom, and sides. If the circulating fan for producing heat sources is a specially designed high-temperature resistant fan, it has the advantages of long service life, low energy consumption, low noise, and small size.

electronic control system

The electrical control of painting and painting assembly lines includes centralized and single row control. Centralized control can use programmable logic controllers (PLCs) to control the host, automatically control each process according to the programmed control program, collect data, and monitor alarms. Single row control isCoating production lineThe most commonly used control method in China is to control each process separately, with the electrical control box (cabinet) located near the equipment, which is low-cost, intuitive to operate, and easy to maintain.

Hanging conveyor chain

Suspension conveyor is a conveying system for industrial assembly lines and painting lines. The stacking suspension conveyor is applied to L=10-14M storage shelves and special-shaped street lamp alloy steel pipe painting lines. The workpiece is lifted on a dedicated hanging fixture (with a load capacity of 500-600KG), and the entry and exit switches are smooth. The switches are electrically controlled to open and close according to work instructions, meeting the automatic conveying of workpieces at various processing stations. Parallel accumulation cooling is carried out in the strong cooling room and the unloading area, and hanging fixture recognition and traction alarm shutdown devices are installed in the strong cooling area.