The time required to complete an injection molding process is called the molding cycle, also known as the molding cycle. It actually consists of the following sections:
Molding cycle: The molding cycle directly affects labor rate and equipment utilization rate. Therefore, in the process, we should ensure the quality of the premise, as far as possible to shorten the molding cycle of the relevant time. Throughout the molding cycle, injection and cooling times are important, and they have a decisive effect on the quality of the product. The charge time in the injection time is directly inversely compared to the charge rate, and the charging time is generally about 3-5 seconds. The pressure-saving time in the injection time is the pressure time of the plastic in the cavity, which accounts for a large proportion of the total injection time, generally about 20-120 seconds (special thick parts can be up to 5 to 10 minutes). Before the melt is frozen at the gate, the pressure-keeping time has an effect on the accuracy of the product size, if in the future, there is no effect. The pressure-saving time also has a good value, which is known to depend on material temperature, mold temperature, and the size of the main channel and gate. If the size of the mainstream channel and gate and the process conditions are normal, it is usually based on the pressure value that results in a small range of product shrinkage fluctuations. The cooling time is mainly determined by the thickness of the product, the thermal and crystallization properties of the plastic, as well as the mold temperature. The end point of cooling time, should ensure that the product release does not cause changes as a principle, cooling time is generally about 30 to 120 seconds, cooling time is not necessary, not only reduce efficiency, complex parts will also cause mold release difficulties, forced release will even produce release stress. Other times in the molding cycle are related to whether the process is continuous and automated, as well as the degree of continuity and automation.