What are the five injection molding times to make a good injection mold


On the premise of ensuring product quality, the cycle t […]

On the premise of ensuring product quality, the cycle time is as short as possible. The cycle time includes the following items: injection time, pressure holding time, melting time, cooling time, ejection time, mold clamping low-pressure time, and even more The time factor is also related to mold opening and clamping, and the speed of ejection.
1. Injection time
Including the holding time. Generally speaking, the longer the injection time, the more saturated the product. However, when Hongmei Molding emphasizes quality, production capacity must also be considered. What's more, if the injection time is too long, it may cause the product to be too long. A series of problems such as large deformation of the sticky mold ejection due to fullness, so we should consider comprehensively when setting the injection time, and try to shorten the injection time when it meets the quality requirements.
2. Melting time
The length depends on the speed of the melt speed setting and the size of the backpressure setting, but there is one point, the length of the melt time control must be shorter than the cooling time.
3. Cooling time
The length of the cooling time directly affects the molding cycle. The longer the cooling time, the longer the molding time, and the lower the production capacity. Therefore, when setting the high-pressure cooling time for Hongmei Molding, as long as the product can be formed smoothly, It will directly affect the deformation and other problems, and the shorter the setting time is, the better.
4. Eject time
The ejection time is generally appropriate to cooperate with the manipulator. When the manipulator is used fully automatically, the ejection residence time is generally maintained at 1.5-2 seconds. Semi-automatic production. If the ejector pin returns, the product will fall or jam and the product cannot be removed. It should be kept for about 5 seconds.
5. Low voltage protection time
It plays a great role in protecting our personal safety and mold safety. With the adjustment of the low-pressure position and low pressure of the mold, the low-pressure protection time should be 1-3 seconds. The shorter the protection time, the less harm it may cause.