Do you know how many injection molds types there are?
  1. Single parting lineinjection mould

When the mold is opened, the movable mold and the fixed mold are separated to take out the plastic part, which is called a single parting line mold, also called a double plate mold. It is the simplest and most basic form of injection molds. It can be designed as a single-cavity injection mold or a multi-cavity injection mold according to needs. It is the most widely used injection mold.

  1. Double parting lineinjection mould

The double parting line injection mold has two parting lines. Compared with the single parting line injection mold, the double parting line injection mold adds an intermediate plate (also called movable gate plate, It is equipped with gates, runners and other parts and components required by the fixed mold), so it is also called a three-plate (moving plate, intermediate plate, fixed plate) injection mold, which is often used for single or multi-cavity injection molds with point gate feed. When the mold is opened, the intermediate plate is separated from the fixed template at a fixed distance on the guide post of the fixed mold, so that the casting system aggregate can be taken out between the two templates.

The double parting line injection mold has a complex structure, high manufacturing cost, and difficult parts processing. Generally, it is not used for the molding of large or extra-large plastic products.

  1. Injection mold with lateral separation and core pulling mechanism

When the plastic part has side holes or undercuts, it is necessary to use a core or slider that can move laterally. After injection molding, the movable mold first moves down for a certain distance, and then the inclined section of the bending pin fixed on the fixed template forces the slider to move outward, and at the same time, the push rod of the demolding mechanism pushes the pusher plate to make the plastic part take off the core.

  1. Injection mold with movable molded parts

Due to the special structure of plastic parts, the injection mold is required to be equipped with movable molded parts, such as movable punches, movable die movable inserts, movable thread cores or rings, etc. These movable molded parts can be moved out of the mold together with the plastic part during demolding, and then separated from the plastic part.

  1. Automatic unloading thread injection mold

For threaded plastic parts, when automatic demolding is required, a rotatable thread core or ring can be set on the mold, and the mold opening action or the rotation mechanism of the injection molding machine can be used to drive the thread core or thread ring to rotate, thereby releasing Plastic parts.

  1. Runnerless injection mould

Runnerless injection mould refers to the method of adiabatic heating of the runner to keep the plastic between the nozzle and the cavity of the injection molding machine in a molten state, so that there is no condensate in the pouring system when the mold is opened and the plastic part is taken out. The former is called adiabatic runner injection mold, and the latter is called hot runner injection mold.

  1. Right Angle Injection Mold

Right-angle injection molds are only suitable for angle injection molding machines. The difference from other injection molds is that the feeding direction of this type of mold is perpendicular to the opening and closing direction of the mold. Its main channel is opened on both sides of the parting surface of the moving and fixed molds, and its cross-sectional area is usually the same, which is different from the molds used in other injection molding machines. The end of the main channel is to prevent injection for the wear and deformation of the nozzle and the inlet end of the main runner, replaceable runner inserts can be set.

  1. Injection mould with demoulding mechanism on fixed mould

In most injection molds, the demolding device is installed in the interference of the movable mold, which is conducive to the work of the ejector device in the opening and closing system of the injection molding machine. In actual production, because some plastic parts are limited by the shape, it is better to leave the plastic parts at the tip of the fixed mold for molding. This makes the plastic parts eject from the mold, and the fixed mold must be replaced with a demolding mechanism.

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