Automatic checkweigher, also known as weight sorting machine. It is widely used in automatic checkweighing equipment for production lines in pharmaceutical, food, chemical and other industries. It can detect overweight and underweight unqualified products in the production line in real time online. Automatic weight sorting machine is a kind of product checkweighing and sorting equipment for medium and low speed, high precision packaging production lines. It can be integrated with various packaging production lines and conveying systems. It is mainly used for online inspection of product weights. Qualified products are separated. The packaged products pass the checkweigher weighing test, the qualified ones will be sent back to the original conveyor belt, the unqualified ones will be rejected (or alarm shutdown), and the products can be classified and counted according to the settings.