Analysis of common problems with dispensing machines

Dripping of the dispensing valve of the automatic dispensing machine often occurs after the dispensing valve is closed. 95% of this situation in automatic dispensing machines is caused by the use of needle diameters that are too small. The needle of an automatic dispensing machine that is too small can affect the flow of liquid and cause back pressure, resulting in dripping shortly after the glue valve is closed. A too small needle can also affect the exhaust bubble action of the rubber valve when it starts to be used. Simply replacing the larger needle can solve this problem. The conical oblique needle produces the least back pressure and the smoothest liquid flow. The air inside the liquid will cause dripping after the rubber valve is closed. Remove the air in the liquid in advance, or use glue that is not easily prone to bubbles. Alternatively, centrifuge and defoaming the glue before use.

The dispensing size of the automatic dispensing machine is inconsistent

When the automatic dispensing machine produces inconsistent dispensing, it is mainly caused by the unstable pressure cylinder or air pressure that stores the fluid. The intake pressure regulator should be set 10 to 15 psi lower than the minimum pressure in the factory, The pressure used in the pressure cylinder should be between the middle and above of the pressure regulating gauge, and the use of pressure between the low pressure part of the pressure gauge should be avoided. The control pressure of the glue valve should be at least 60psi or above to ensure stable glue output. Finally, the adhesive release time should be checked. If it is less than 15/1000 seconds, it will cause unstable adhesive release, The longer the dispensing time, the more stable the dispensing becomes.

The flow rate of the automatic dispensing machine is too slow

If the flow rate is too slow, the pipeline should be changed from 1/4 "to 3/8". If the pipeline is not needed, it should be as short as possible. In addition to changing the pipes, it is also necessary to change the rubber mouth and air pressure, which will completely accelerate the flow rate.

Bubbles in the fluid of the automatic dispensing machine

If the fluid pressure of the automatic dispensing machine is too high and the valve opening time is too short, it may allow air to seep into the liquid The solution is to reduce fluid pressure and use a conical oblique needle.