The main parts of screw valve are screw and stator. Moreover, the stator and the screw can form a sealed cavity, and the glue is pushed forward by the screw in the sealed cavity, and the larger the angle of rotation is, the more glue is discharged. Because of its feeding port for the back side and for the eccentric rotation, so its structure is relatively large. If the screw does not rotate, even if the inlet is pressurized, the glue will not come out.

       The screw valve is a precision screw valve suitable for medium to high viscosity fluids by controlling the time, air pressure and screw speed to perform dispensing processes such as dotting and scribing with high accuracy. The screw valve uses a screw to dispense by positive displacement instead of movement, enabling ultra-precise control of the dispensing process. The modular design of the valve allows for quick and easy loading and unloading of the screw connector chamber without removing the valve body from the equipment. Another feature of the valve is that the valve's screw connector chamber is interchangeable with the applicable screw drive.

       Screw valve features: precision screw valves are lightweight and easy to hold in the hand; easy to operate, flexible, and have high dispensing accuracy. Application areas of screw valve: for solder paste, silver paste, red glue, grease, UV glue, silicone, etc., applied to solder paste welding, chip bonding, chip packaging, round dam and other processes using Z to rotate the screw for material delivery, to solve the pneumatic dispensing method, due to the gas can be shrunken by the pulsation of the amount of glue out of the inconsistent problem. Motor forward and reverse rotation are controlled separately, forward rotation can be used to use the material according to the required flow is uniformly extruded, reverse rotation can realize the hot melt adhesive suction, to avoid leakage of adhesive, pulling and other phenomena, the accuracy of the material can reach 5%, zui small amount of material 2NL.

       Advantages of screw valve:

       1. Instead of manual specific dispensing operation, realize mechanical automation production;

       2. Easy to learn and understand, no need for external instructor, more convenient than similar products debugging, simple and convenient, high-speed and accurate;

       3. With drawing point, line, surface, arc circle, irregular curve dispensing and so on;

       4. Accurate and constant dispensing size