At present, many companies are still using manual spraying operations. With the upgrading of industrial automation, spraying operations are gradually moving towards automation, and the types of automatic spraying equipment are also developing in diversification. Many products of spraying workpieces are hardware processing parts, such as speaker nets, punching nets, iron nets for speakers, etc. So how to design an automatic spraying production line is reasonable?
When designing the spraying workshop, the entire painting operation area is fully enclosed, the overall equipment is isolated from the outside world, and the air supply in the spraying area is purified to ensure that the air cleanliness is within 100,000 grades. Manually assemble the workpiece on the secondary jig, and then insert it with the primary jig on the conveyor chain. The jig features: flexible rotation and convenient insertion, which is a leading technology in this industry.
The hardware processing parts pass through the manual/automatic electrostatic and dust removal device to eliminate the static charge and dust remaining on the workpiece. In order to completely remove the dust from each part of each workpiece, the conveyor chain is equipped with a rotation device at this station. Therefore, the workpiece The automatic electrostatic precipitator is carried out in rotation, and the dust removal effect is good. The electrostatic precipitator is an imported product, and its characteristics are: good coating and control of defects in each link.
The metal parts after dust removal treatment enter the spraying room. The spraying room is the most important working area of the automatic spraying line. The fresh air sent by the air supply device is filtered again by a 99.99% filter before entering the spraying room. The exhaust system is exhausted by the waste gas treatment exhaust fan of the water curtain spray cabinet to the roof of the building. More than 90% of the paint mist contained in the exhaust gas is doubled by the water curtain and vortex of the water curtain spray cabinet. dealt with. The air flow speed in the spraying room is 0.4~0.6 m/s, and it is safe, non-toxic, and free of vortex airflow and secondary pollution; the spraying room adopts a large circulation method;
The workpiece after automatic spraying immediately enters the leveling section. The leveling section is equipped with an air supply device and an exhaust device to ensure that the paint concentration in the leveling chamber does not exceed the explosion limit and ensure safety. The leveled workpiece enters the drying furnace and is cured under heating. There are several air blowers on the top of the curing furnace. The impellers stir the hot air in the furnace to make the workpiece heated evenly. For frequent maintenance and cleaning, there is an instrument on the control panel that automatically displays and records the temperature of each measuring point in the furnace. It is recorded truthfully and displayed intuitively, which is convenient for observation and regulation. After baking, the workpiece enters the cooling section and is cooled by fresh air. To ensure the spraying quality of the next process, it is also equipped with an exhaust device to discharge hot air in a timely manner.
The conveying equipment used in this automatic spraying production line plan for hardware is ground chain conveyor, which runs smoothly, without slag, and does not need to be lubricated. The upper and lower workpieces are simple, easy to check, high degree of automation, saving a lot of labor, and the spraying line runs smoothly; it adopts man-machine interface control, and each part is controlled separately.
