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What are the advantages of the single tube precision screw valve glue supply series
source：www.cnkaihui.com | Release time：2026年08月10日1. High quantitative accuracy and stable consistency in adhesive dispensing
Using the principle of volumetric measurement, the dispensing amount is directly determined by the screw speed and number of rotations, and is not affected by fluctuations in the supply pressure, decrease in the liquid level of the material cylinder, or slight viscosity fluctuations of the adhesive. The repeated dispensing accuracy can reach within ± 1%.
Time pressure valves can cause glue drift due to changes in gas source, liquid level, and colloid viscosity. Screw valves can be produced continuously for a long time, with small differences in glue points and glue lines in bulk products. When the machine is stopped, the screw cavity is self-locking, and there will be no glue leakage even with the pressure of the material cylinder.
2. Continuous glue dispensing without pulsation, uniform glue application effect
The screw rotates to form a continuous closed conveying chamber, and the colloid is smoothly pushed forward without pulse or intermittent impact. Suitable for continuous line drawing, spiral coating, and long path gluing. The glue line thickness is uniform, and there will be no large or small glue points or broken glue ripples. It is suitable for sealing, filling, and bottom filling processes.
3. Controllable suction and glue breakage, solving problems of wire drawing and glue dripping
The servo motor supports forward and reverse rotation. After dispensing, the screw rotates at a small angle to suck back the glue, and the needle end face breaks the glue cleanly, eliminating wire drawing, hanging glue, and dripping; The suction angle and speed can be adjusted according to the characteristics of the glue, adapting to different viscosity colloids and reducing residual glue pollution on the product surface.
4. Wide range of fluid adaptation, capable of handling colloids containing fillers
It can be compatible with low viscosity solvent glue, UV glue, epoxy resin, medium and high viscosity silica gel, thermal conductive gel, grease, and can also transport solder paste, silver paste, conductive adhesive and other media containing solid filler particles; The screw stator is gently pushed, and the particles are not easily broken, which is not easy to cause damage to the packing due to grinding like a plunger valve.
The conveying shear stress is low, and the shear sensitive colloid will not undergo denaturation or precipitation, protecting the original properties of the adhesive.
5. Flexible flow regulation, covering small to large flow rates
By replacing the screw stator components with different displacements and adjusting the servo speed, both micro dispensing and continuous high flow adhesive supply can be achieved; The parameters only modify the motor speed and rotation time, without the need to repeatedly adjust the air pressure. The process parameters are digitally saved, making it easy to switch production and access automation programs.
6. Compact structure, strong integration adaptability
The overall volume of the valve body is compact, and the installation posture is not limited. It can be directly assembled to robotic arms or gantry dispensing platforms; The requirement for peripheral gas supply pressure is low, and the front-end material cylinder only needs a lower auxiliary feeding pressure, without relying on air pressure to control the glue output. The requirement for the gas supply system is simple.
7. Modular quick release structure, easy maintenance and cleaning
Modular design of flow channel components, stator and screw can be quickly disassembled, and the valve body can be disassembled, cleaned, and replaced with spare parts without the need to remove the entire machine from the equipment; Reducing downtime for maintenance, the workload of changing colors and cleaning different adhesives is better than that of plunger valve bodies, and reducing the cost of spare parts replacement.
8. Suitable for long-term continuous mass production with high utilization rate
Continuous delivery in a sealed chamber, without plunger reciprocating or returning pauses, suitable for high-frequency, long-term uninterrupted production; Reducing component wear caused by frequent valve body opening and closing actions, electronic, automotive, and photovoltaic production lines can operate stably 24/7.
9. Additional advantages compared to double tube screw valves
Single tube structure has fewer components and a lower failure rate; There is no risk of mixing chamber, and there is no hidden danger of AB glue mixing and reflux curing damaging the valve body; The procurement and maintenance costs are lower, specifically designed for single component glue scenarios, with simple debugging and less prone to misoperation.
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