What is the molding cycle of a plastic mold? See here to understand!

2021-03-25 09:28:52 admin

What is the molding cycle of a plastic mold? See here to understand!


For plastic molds, there is a great relationship between the length of the molding cycle and the manufacturing cost. The so-called molding cycle, also known as the molding cycle, usually mainly refers to the time required for mold injection molding to complete one injection molding process. Since the molding cycle directly affects labor productivity and equipment utilization, in the actual production of plastic mold products, it is necessary to shorten the relevant time in the molding cycle as much as possible under the premise of ensuring quality. Let's first briefly introduce the complete molding cycle of the next plastic mold.




 




Prefabricated plastic mold refers to the time required to complete a plastic mold






The prefabricated plastic mold refers to the time required to complete a plastic mold. In a molding cycle of plastic mold production, each moving part of the injection device and the mold clamping device produced by the injection molding machine will move once in a predetermined order. In order to facilitate the analysis of the injection molding process, the molding cycle can be divided into two parts: the plastic mold molding operation phase and the auxiliary operation phase.




The molding operation stage of plastic mold products refers to the entire time required for molten material to enter the steel mold, fill the mold cavity shape, and then condense and shape the steel mold cavity. Because the shape and shape are all carried out in the closed cavity of the steel mold Therefore, the molding time of the plastic mold should be included in the time when the steel mold is locked. The molding operation of the plastic mold mainly includes four stages: filling, holding pressure, backflow, and demolding. The filling stage starts with the screw or plunger moving, and the molten material enters the steel mold cavity until the steel mold cavity is filled. The pressure holding stage refers to the stage when the molten material fills the steel mold cavity to the time when the screw is retracted. The reverse flow stage refers to the time when the screw retreats to the time when the molten material at the gate solidifies. The demolding stage means that the molten material from the gate is completely solidified until the plastic mold product is ejected from the steel mold cavity.


The auxiliary operation stage of the molding cycle is all operations except the molding operation stage, which usually includes the opening and closing of the steel mold, placing the insert, applying the release agent, and taking out the product. Since the modeling and shaping of the plastic mold are carried out in the closed steel mold cavity, the molding time should be included in the time when the steel mold is locked, and the movement time and auxiliary time of the moving parts should be included in the opening of the steel mold. Time. [For details, please refer to "Three precautions for plastic mold processing operations, user instructions! "Related content]


Combined with the above analysis, it is not difficult to see that the molding cycle of a plastic mold is still relatively long. In order to avoid the impact of too long molding time on mold manufacturing costs and ensure the smooth delivery of molds, it is also hoped that relevant manufacturers must strengthen the management and control of the molding process in order to save unnecessary production costs.