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A Vacuum Backdraft Valve for Preventing Glue Drawing

writer:点胶设备 time:2019-08-31 11:07 clicks:
The most common problem in dispensing is wire drawing. Drawing occurs when the needle of dispensing machine moves. The effect of dispensing will be affected if the adhesive is applied to the wire drawing. When dispensing machine does not dispense glue, vacuum backdraft valve can prevent glue leakage and wire drawing. Therefore, backdraft valve must be installed near dispensing machine to deal with actual production.
 
 涂覆真空回吸阀
Coated Vacuum Backdraft Valve
 
The automatic dispensing machine has three important components, including vacuum backdraft valve, switching switch and power indicator lamp. These three parts can be adjusted and coordinated to determine the packaging quality effect. Vacuum backdraft device is the function of dispensing machine to adjust the glue concentration. When the glue viscosity is too low, low-viscosity glue can be drawn from the dispensing valve by adjusting the vacuum suction valve, and then the glue viscosity can be adjusted for production.
 
The glue leaks easily when the glue volume is large. Vacuum backdraft valve can also be used to suck back glue to avoid glue leakage. The most common problem in dispensing is wire drawing. The vacuum backdraft valve in automatic dispensing machine is mainly developed to solve this problem. Wire drawing parts are absorbed by vacuum suction function to avoid factors affecting the dispensing process.
 
喷雾式点胶阀
Spray dispensing valve
 
In the packing process of dispensing machine, the interface pipe of backdraft valve should be 6mm according to the standard. In the sealing process, it is very important to observe the change of air pressure by looking at the barometer. It is also very important to adjust the change of air pressure. Especially in the vacuum backdraft process, the pressure of the vacuum backdraft valve will be adjusted more accurately.
 
Standard desktop automatic dispensing machine
 
 标准型台式自动点胶机
When the reading of the air pressure indicator of the automatic dispensing machine reaches a certain height, the button of the backdraft valve must be opened. After the air pressure is adjusted to the standard value, normal operation can be carried out only when the air pressure is stable.
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