What are the production characteristics of injection mold manufacturing?
The type cavity and core are presented in the shape of body.Plastic parts of external and internal shape is formed directly by the cavity and core, these complex multiple-layered surface processing difficulty is bigger, especially within the blind groove cavity forming surface processing, using traditional machining method, not only requires workers technical level is high, the auxiliary fixture, cutting tools, and processing cycle is long.
High precision and surface quality, long service life.At present, the dimension accuracy of the general plastic parts is 1T6 ~ 1T7, and the dimensional accuracy of the injection mold parts of the surface roughness ra0.2-0.1 um is required to be 1T5 ~ 1T6, with the surface roughness under Ra0.1um.The long life injection mold is necessary to improve the efficiency and reduce the cost. Currently, the life of injection mold is more than 1 million times.The precision injection mould should be used with large rigidity. Increase the thickness of the template. Increase the support column or taper positioning.
The components are designed to prevent deformation of the mold after pressure, and sometimes the internal pressure can reach lOOMPa.The ejection device is an important factor affecting the deformation and dimensional precision of the product, so the best point should be selected to make the place unevenly distributed.The high precision injection moulds are mostly used in the structure, which requires the machining accuracy and interchangeability of the die parts.
The process is long and the manufacturing time is tight.For the injection molded parts, mostly to other parts of the complete product, and in many cases are in other parts has been completed, anxiously waiting for the plastic on the matching of Hong Kong.Because the shape or size precision requirements for products is very high, and due to the different characteristics of the resin material, mould manufacturing is completed, also need to repeatedly test and correction, make the development and delivery of the goods time very nervous.
It is designed in different places and made in different places.Mould manufacturing is not the ultimate goal, but the users put forward eventually products design, mould making factory according to the requirements of users design and manufacture of the mould, and in most cases, the products of injection production but also in other factory.This results in product design, mold design and manufacture and production of products in different locations.
Professional division of labor, dynamic combination.Mold production batch is small, generally belong to single production, but the mould need a lot of standard parts, large formwork, small to thimble, these can't also cannot do, only by a single manufacturer and manufacturing process is complex, common equipment and CNC equipment use very unequal.