What are the problems of dispensing machine（1）

Plastic dispensing needleToo small needle will affect the flow of liquid and cause back pressure, resulting in dripping soon after the rubber valve is closed. Too small needle will also affect the exhaust bubble action when the rubber valve is used. This problem can be solved by replacing a larger needle. The conical oblique needle produces less back pressure Zui and the liquid flows Zui smoothly. The air in the liquid will clear the leakage after the rubber valve is closed. Zui it is better to exclude the air in the liquid in advance or use rubber that is not easy to contain bubbles. Or centrifugal defoaming the glue before use.Plastic dispensing needle