We all understand that SMC is a kind of composite material, with a large number of points. In the production of molds have a variety of points need to grasp, grasp is difficult to produce quality molds, the following, and we introduce in detail about the design of SMC mold control points.

According to the characteristics of composite materials, combined with the actual experience in the process of birth, the SMC process required for the design of molding die points for summary collation, from a variety of aspects of the detailed description, analysis of the design of SMC mold control points.

SMC molding process is an advanced composite molding method, and SMC mold is the basis of the SMC process, good product quality is guaranteed by a reliable mold. Therefore, in the design work of SMC molding process, the design of SMC mold is particularly important.

SMC molding process

1, in the SMC mold design process, according to the specific size of the product design mold cavity. In addition to the surface quality of the product and the size of the demand to select the appropriate material. In order to ensure the quality of the product and process feasibility, should be reasonably designed mold shear edge, ejector system.

2, SMC molded plastic and the usual thermoplastic, thermosetting injection molding is somewhat different, mainly SMC molded plastic shrinkage is lower, so in the design of SMC mold size should be changed.

3, SMC molded plastic using specially designed hydraulic press through the molding and molding. The performance and accuracy of the press and the design of the SMC mold is directly related to the precision of the molded product, SMC molding process is mainly through the press and SMC mold to achieve.

4, SMC molding plastic molding pressure is generally between 2.5-10.0MPa, for car-grade SMC products molding pressure is as high as 12.0-15.0MPa, so the rigidity and parallelism of the press has a very high demand, which will have a significant impact on the dimensional accuracy of the molded product and surface quality. Especially for mass production of products with high repeatability. In addition, the press needs to have adjustable fast closing/opening speed, slow closing/opening speed to meet different SMC molding needs, reduce or eliminate product deformation and surface defects.