Malfunctions and Handling Methods of Automatic Glue Dispenser
Release time:
2023-05-15
Source:
1. The glue nozzle of the automatic dispensing machine is blocked;
Reasons for clogging of the glue nozzle: The glue valve or needle of the automatic dispensing machine is not thoroughly rinsed, impurities are mixed in the glue, pores are blocked, or incompatible glue is mixed, which can also lead to insufficient or no glue points in the glue nozzle.
Solution: Replace the needle with a clean one, replace it with a better quality glue, and clean the glue valve on time.
2. Rubber valve dripping and leakage;
Reason: The diameter of the glue valve needle used in the automatic dispensing machine is too small. A needle that is too small can affect the bubble discharge action of the glue valve during use, which in turn affects liquid circulation and causes back pressure, resulting in dripping shortly after the glue discharge stops.
Solution: Replacing a relatively large needle can completely solve this problem. Or improve the suction function, in addition, the gas in the liquid will drip after the rubber valve is closed. It is best to exhaust the gas in the liquid in advance, or use non foaming glue, or centrifuge or soak it statically before use.
3. Slow flow rate;
Reason: The liquid conveying pipeline of the automatic dispensing machine is relatively long, which leads to unstable air pressure loss at the pipe mouth, resulting in slow dispensing flow rate.
Solution: Change the automatic dispensing machine pipeline from 1/8 to 1/4. If there are no special requirements, the shorter the circulation pipeline, the better. In addition, it is necessary to adjust the outlet and pressure to accelerate the flow rate.
4. There are bubbles in the fluid;
Reason: Due to excessive main feed pressure and short valve opening time during operation, the automatic dispensing machine can also discharge gas into the liquid, causing bubbles.
Solution: Reduce the pressure of the feed fluid and use a conical ruhr needle tube.
5. The size of the glue is inconsistent;
Reason: The pressure pump or feed pressure of the automatic dispensing machine storing fluid is unstable, resulting in uneven dispensing and inconsistent dimensions.
Solution: The pressure should be prevented from falling between the low-pressure part of the pressure gauge. The control pressure of the glue valve should be at least 60psi to ensure the stability of the glue. Finally, check the length of the glue.
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