08,03,2026 1 views
Since the beginning of summer, temperatures have risen and humidity remains high. The air conditioning is on in the workshop, but the size fluctuations, burrs, shrinkage, and appearance defects of precision injection molded parts frequently occur, and the scrap rate is much higher than in spring and autumn.
The engineer repeatedly adjusted the machine, and the master craftsman never left, but the consistency of the product was unstable.
Where is the problem? Materials are sensitive, environments are constantly changing, and equipment response cannot keep up.
High temperature and high humidity, the "three obstacles" of precision products
1The first hurdle: the viscosity of the material has changed. For every few degrees Celsius increase in ambient temperature,PAThePCThePBTThe fluidity of engineering plastics will change accordingly. Low viscosity during the day and high viscosity at night - with the same process parameters, the product sizes produced by the morning and evening shifts are different.
2The second hurdle: condensation on the surface of the mold. When the humidity is high and the temperature of the cooling water is slightly low, condensation water film may appear on the surface of the mold cavity. The surface of the product may have fogging, flow marks, or even air marks, and the appearance parts may be directly scrapped.
3The third hurdle: Narrowing of the process window. Thin walled products, multi cavity molds, and precision mating surfaces - originally stable process windows become extremely sensitive in summer. There was a slight fluctuation, and the flying edge came out. The size exceeded the tolerance.
Traditional equipment relies on manual adjustment based on experience, resulting in slow response and large errors. As soon as the master leaves, the quality drifts away.YHE hybrid series injection molding machine: making precision products stable even in summer
The Yonghua YHE oil electric hybrid series injection molding machine does not rely on manual monitoring, but on system control. To address the challenges of high temperature and humidity in summer, ensure product consistency from four aspects.
Fully closed-loop intelligent control:
Eat it up before any fluctuations occur
The YHE hybrid series injection molding machine integrates a fully closed-loop intelligent control system with built-in PID and adaptive algorithms. Spray glue, hold pressure, back pressure - each stage of the process is monitored in real-time, and every small deviation is automatically compensated for.
Does an increase in ambient temperature cause a decrease in material viscosity? The system automatically adjusts the injection speed and pressure curve. Does the fluctuation of cooling water temperature affect the pressure holding effect? The system adjusts the pressure holding switching point in real-time.
No need for manual intervention, the device stabilizes itself.
Injection accuracy ≤ 0.01mm:
Consistent multiple cavities, consistent batches
In summer, when the material fluidity changes, "the first mock examination has many cavities, and the cavities are different" is most likely to occur.
YHE hybrid series injection molding machineRepetitive accuracy of injection position ≤ 0.01mmThe independent servo motor drives the ball screw, with fast response and accurate control. Under multi cavity molds, the filling amount of each cavity is highly consistent. Morning and evening shifts, sunny and rainy days, with size deviation controlled within a very small range.
The precision mating surface fits perfectly when installed.
High speed injection+wide template:
Thin wall without trace, flying edge without trace
In summer, if there is slight deviation in the distribution of mold thermal expansion and locking force, flying edges are prone to appear. Incomplete filling, shrinkage, and short shooting are common in thin-walled products.
YHE hybrid series injection molding machineInjection speed up to 500mm/sInstantly filled with complex thin-walled cavities. Wide reinforced template design, widened and thickened, optimized spacing between pull rods, and comprehensive upgrade of mold locking rigidity. The tension generated by biased injection glue is effectively resisted, and there are very few burrs on the parting surface.
One time molding, no need for secondary trimming.
Full hard screw+dual alloy barrel:
Long lifespan under high temperature and humidity
Processing materials such as fiberglass PA and flame-retardant PBT in summer causes more severe wear on the screw barrel compared to the normal temperature season.
YHE hybrid series injection molding machine comes standardThe wear resistance of the fully hard screw and dual alloy barrel is 5-8 times higher than that of conventional nitride parts.Long term production ensures even and stable plasticization, eliminating black spots, color differences, and product cracking from the source.
Do not replace parts in advance due to wear and tear, and do not shut down for debugging due to quality fluctuations.
Product consistency
Not relying on 'human monitoring', relying on 'system control'
Summer is characterized by high temperatures and humidity, with sensitive materials and variable environments. Traditional equipment is exposed to shortcomings, which exacerbates the quality challenges of precision products.
YHE oil electric hybrid series injection molding machines transform the experience of the old master into algorithms and the fluctuation of the environment into automatic compensation - making each the first mock examination product stable.
