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The structural composition of the injection molding die can be divided into the following parts
Jul 09, 2018

The structural composition of the injection molding die can be divided into the following parts: the molding part, the mold guiding part, the product pushing part, the core drawing part, the heating and cooling part of the mold body, the supporting part of the mold body, and the pouring melt channel and row Stomata, etc.

 (1) Forming part. That is, the mold assembly directly forms a cavity part of the plastic product, and has a punch, a die, a core, a rod or an insert.

 (2) Clamping guide part. It is a component that is set to correctly align the center axis when clamping the movable and fixed molds, and has a guide post, a guide hole sleeve or a tapered cone.

 (3) Product introduction part. It is the component used to push the molded injection product out of the molding cavity, including the ejector rod, the fixing plate, the push plate and the spacer.

 (4) Core extraction part. When the plastic product with the pit or the side hole is injection-molded, the core mechanism parts for forming the pit and the side hole are first extracted, such as the inclined guide column, the inclined slider and the bending pin which are frequently used.

 (5) The heating and cooling portion of the mold body. It refers to the control system that adapts to the temperature of injection molding process of plastic products, such as resistance heating plate, rod and its electronic control components; circulating cooling water pipe for cooling part.

 (6) The support portion of the mold body. Refers to the auxiliary parts to ensure the correct working of the mold body, such as moving, fixed mold pad, positioning ring, lifting ring and various fastening screws.

 (7) Casting the melt channel. It refers to the flow path that can guide the molten material injected through the nozzle to the cavity of the molding die, and can be generally divided into a main channel, a branching channel, a bushing port (gate) and a cold trough.

 (8) Vent hole. It refers to the part that can discharge the air in the mold cavity. In general, small products may not have a dedicated vent hole, and the air in the cavity may be discharged from the gap of each fitting; for a mold for a large injection product, a vent hole must be provided.

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