Hot semi mold is a common structure in injection molding and plays an important role in the injection molding process.Its main function is to achieve uniform filling and rapid cooling of plastic by heating a part or all of the mold area.The following will provide a detailed introduction to the role of hot semi molds in injection molds and their impact on the injection process and plastic product quality.

　　1.Uniform filling:The hot half mold heats the mold to increase the surface temperature of the mold.When molten plastic enters the mold cavity,due to the high surface temperature of the mold,it can effectively delay the cooling rate of the plastic,extend the flow time of the plastic,and achieve better filling effect.Uniform filling can reduce or avoid defects in plastic products,such as bubbles,short shots,and melt back issues.

　　2.Rapid cooling:During the injection molding process,after the plastic filling is completed,rapid cooling is required to solidify the plastic and maintain its desired shape.By adjusting the heating system,the hot half mold can better control the surface temperature of the mold,thereby accelerating the cooling rate of the plastic.Rapid cooling can reduce the shrinkage and deformation of plastic products,improve their dimensional stability and product quality.

　　Hot half mold

　　3.Reduce cycle time:The use of hot semi molds can effectively reduce the cooling time of plastic products,thereby shortening the entire injection molding cycle.By heating the mold,the fluidity of the plastic can be improved,resulting in a shorter filling time.At the same time,rapid cooling can reduce the cooling time of the product.Reducing cycle time can improve production efficiency,increase output,and reduce costs.

　　4.Improve product quality:During the process of uniform filling and rapid cooling of the hot half mold,it can ensure the dimensional stability and consistency of plastic products.By controlling the temperature distribution on the surface of the mold,shrinkage and deformation of the product can be reduced,and the dimensional accuracy and surface quality of the product can be improved.At the same time,hot semi molds can also reduce or eliminate the internal stress of the product,improve the internal structure and physical properties of the product.

　　In short,hot semi molds play an important role in injection molding.It achieves uniform filling and rapid cooling by heating the mold,reducing cycle time,and improving product quality.The application of hot semi molds can improve plastic flow and cooling control during the injection molding process,thereby improving production efficiency,reducing costs,and obtaining higher quality plastic products.