Injection Mold Process - Agra

Mold making in China

Mold is the common term used to describe the tooling used to produce injection molded plastic parts.
It is mainly the production of thermoplastic products the most common kind of mold. Plastic injection mold processing equipment for the plastics injection molding machine. Plastic melt is first heated in the heated barrel of the end of the injection machine. And then injection molding machine into the mold cavity under the impetus of a screw or a plunger. The injection machine nozzle and mold casting system. Plastic cooling hardening molding, and mold release to get the products. Its structure is usually molded parts, casting systems, and parts-oriented components. The introduction of institutions, thermostat systems, exhaust systems, and support components.

Manufacturing materials commonly used plastic mold steel modules, commonly used material is mainly carbon structural steel, carbon tool steel, alloy tool steel, and high-speed steel. The injection molding process usually applies only to the varieties of products. Production of the thermoplastic injection molding process to produce plastic products is very extensive. From the daily necessities of life to all kinds of complex mechanical, electrical, and transport parts are injection molding. It is the most widely used in the production of plastics processing methods.

Custom Mold Design - Injection Molds

Molds consist of two primary halves, injection molds (A plate) and ejector molds (B plate). First, plastic resin enters the mold through a sprue in the injection mold. The sprue bushing is to seal tightly against the nozzle of the injection barrel of the molding machine to allow molten plastic to flow from the barrel into the mold, also known as a cavity. The sprue bushing directs the molten plastic to the cavity images through channels that are machined into the faces of the A and B plates. These channels allow the plastic to run along with them, so they are referred to as runners. The molten plastic flows through the runner and enters one or more specialized gates, and into the cavity geometry to form the desired injection molded part.

According to the size of the production capacity, product structure, to determine the appropriate number of cavities, more precision molds, processing difficulty, the higher the cost of the mold cavity. However, the unit price of injection molded parts dropped significantly.

Factors that affect the size of the multi-cavity:

1, Precision injection mold processing. Such as cavity discharge, each chamber is a discharge. The discharge process is not well controlled, cavity size deviation.

2, The injection mold assembly precision. Because of these reasons the assembly results in the internal structure of position deviation.

3, Injection mold design factors. Such as the design of the flow channel. And reasonable uniformity into the plastic, unreasonable runner advanced gum near the nozzle chamber, away from the last glue. Because of contractions are inconsistent, holding pressure situation size will also inconsistent deviation. Into the rubber mouth. The diameter size will cause the size of the deviation. Mold waterway design is unreasonable, in the cavity waterway layAccording to the size of the production capacity, product structure, to determine the appropriate number of cavities, more precision molds, processing difficulty, the higher the cost of the mold cavity. However, the unit price of injection molded parts dropped significantly.