Injection mold processing molding before the preparation matters

2023-09-11

Injection mold processing is the first plastic into the mold, and then the mold along the two vertical axis of continuous rotation and heating, the plastic in the mold under the action of gravity and heat, gradually and uniformly coated, fused and adhered to the entire surface of the mold cavity, molding for the desired shape, to the cooling and shaping and made. The injection process generally includes: charging - plasticizing - injection - cooling - demolding, then in the injection mold processing and molding before what to do before the preparations for it!

In order to make the injection molding smoothly and ensure product quality, the production of raw materials need to be pre-treated, cleaning, barrel, preheating inserts and select the release agent and a series of preparatory work. The injection process generally includes: charging - plasticizing - injection - cooling - demolding.
Charging: Because injection molding is an intermittent process, and therefore need to quantitative (fixed volume) charging to ensure stable operation, plasticization of plastic uniformity, to obtain high-quality plastic parts.

Plasticization: molding materials in the barrel of the injection molding machine after heating, compaction and mixing and other effects, from loose powder or granular solid into a continuous homogeneous melt process.

Injection: Plunger or screw from the barrel of the measurement position, through the injection cylinder and piston to apply high pressure, the plasticized plastic melt through the barrel, the front end of the nozzle and the mold in the pouring system quickly into the closed mold cavity process. Injection can be subdivided into three stages: flow mold filling, pressure retention and shrinkage, and backflow.