In this post I will explain injection molding runner components of mold part. There are 4 main items of runner components: runner lock pin, runner lock pin lock, runner lock pin bushing, ejector runner. It is different functions between the two mold plate and three plate mold, but there are several components that can be […]
Plastic molding
design sprue gate – direct gate in injection mold
Design sprue gate or direct gate is the simplest and oldest kind of gate. it connects directly end sprue to the molding. It has a circular cross-section, is slightly tapered, and merges with its largest cross-section in to the part. The sprue gate always is at the thickest section of the product. It uses for […]
design ring gate in injection mold
Design ring gate of injection mold is special of disk gate. It is used for cylindrical or round parts in a multi cavity mold or when a diaphragm gate is not practical. Melt materials enter the mold by by ring gate can improve weld line defect. There are 2 main types of ring gate: inside […]
design disk gate in injection molding
We usually design disk gate if shape of a product is a trough hole sleeve like moldings, which need a mounting of the core at both ends. It Used in the case of single cavity, or when placing the gate directly to the base of the molded product. Residual strain tend to occur because the […]
design flash gate in injection molding
Design flash gate will be applied to the plate shaped molded product. This type is effective at preventing deformation by suppressing residual strain. It appears a litter in mold design. 1. Advantages and disadvantages of flash gate. A. Advantages. + Flash gate usually use with big product and thickness is thin. If resin of product […]
design side gate in injection molding
Design side gate is the most generally of mold design, and used well in multi-cavity mold. Its shape is a rectangle or semicircle, and placed at side of the molded product. It can use for a product with small side or middle thickness because gate structure is easy and don need high quality. […]