Automatic tube tip assembling machine for saliva ejectors is used for connecting tube into tips automatically which is exclusive for Saliva Ejector. This machine adopts PLC and touch screen mechatronics, has the function of a high degree of automation, fast speed, a high percent of the pass. With features: automatically cutting the tube, automatically sorting tips and automatically nesting the tube into tips. The whole production line, just need two people, one for the operating machine, the other one for counting the finished dental saliva ejectors into bags.