The SMT installation rate is very important for PCB companies. It can be said that many people are concerned about the SMT installation rate because it not only affects the processing cost of the production line, but also affects the operating speed of the workshop. Today, the editor will introduce to you the impact of suction nozzles on the SMT installation rate!

　　The suction nozzle is also another important factor affecting the installation rate, which can be caused by both internal and external factors.

　　1: On the one hand, the internal reason is insufficient vacuum negative pressure. Before removing the parts from the suction nozzle, the mechanical valve on the installation head will automatically switch from blowing to true adsorption, resulting in a certain negative pressure. After absorbing the parts, when the detection value of the negative pressure sensor is within a certain range, the machine is normal, and vice versa, the suction is not good. Generally speaking, the negative pressure at the suction nozzle from the pick-up position to the installation position should be at least 400mmhg. When installing large equipment, the negative pressure should be greater than 70mmhg. Therefore, the filter in the vacuum pump should be cleaned regularly to ensure sufficient negative pressure; At the same time, the working status of the negative pressure detection sensor should be regularly checked. On the other hand, due to pollution and blockage of the surrounding environment or impure air sources, the filter on the installation head and the filter on the suction nozzle become black. Therefore, the filter should be replaced regularly. In general, the filter on the suction nozzle should be replaced at least once every half month, and the filter on the installation head should be replaced at least once every six months to ensure smooth airflow.

　　2: On the one hand, external reasons are the pressure relief of the air supply circuit, such as the aging and rupture of the rubber gas pipe, the aging and wear of the sealing components, and the wear of the suction nozzle after long-term use. On the other hand, due to dust in the adhesive or external environment, especially the large amount of waste generated after cutting components packaged with woven paper, the suction nozzle is blocked. Therefore, it is necessary to check the cleanliness of the suction nozzle every day and monitor its removal at any time. Timely clean or replace clogged or defective suction nozzles to ensure their integrity. At the same time, when installing the suction nozzle, ensure that it is installed correctly and firmly, otherwise it may damage the suction nozzle or equipment.