1, double face injection molding mold double face injection molding mold has two split surfaces, compared with single face injection molding mold, The double surface injection mold adds a partially movable intermediate plate(also known as the active gate plate, which is equipped with a gate, a flow channel, and other parts and components required for the die) to the fixed mold part. It is also called a three-plate type(moving template, The middle plate, fixed template) injection mold, which is often used in the injection mold of the single cavity or multiple cavity of the point feed. When the mold is opened, the middle plate is separated from the fixed template on the guide column of the fixed mold. In order to remove the pouring system coagulant between the two templates.
The structure of double surface injection molding is complex, the manufacturing cost is high, and the processing of parts is difficult. It is generally not used for the formation of large or ultra-large plastic products.
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2, automatic discharge thread injection molding of threaded plastic parts, when required to automatically demoulding, can be arranged on the mold thread core or type of ring that can rotate, using the open die action or the rotating mechanism of the injection molding machine, Or set up a special transmission device, driving the thread core or thread ring rotation, so that out of the plastic parts.
3, rectangular injection mold rectangular injection mold is only suitable for corner injection molding machine, and other injection molding mold is completely different from the direction of this type of mold at the time of molding and the direction of open and close mold vertical. His mainstream road is located on both sides of the moving and fixed mode faces, and its cross-sectional area is usually unchanged. This is different from the die used by other molding machines, the end of the main channel. In order to prevent the abrasion and deformation of the nozzle of the injection molding machine and the inlet of the main flow channel, replaceable flow channel panels can be set up.
4, the demoulding mechanism on the die injection die in most injection mold, the demoulding device is installed on the side of the die, which is conducive to the work of the injection molding machine in the open and close die system. In actual production, due to the limitation of the shape of some plastic parts, the plastic parts are left on the side of the die to be better formed. This allows the plastic parts to be removed from the mold, and the die off mechanism must be set on the side of the die.
5, injection molding with movable molding parts Because of certain special structures of the molding parts, injection molding is required to set movable molding parts, such as moving convex mold, moving concave mold, moving insert, moving thread core or ring, etc.., When demoulding, it can be removed from the mold together with the plastic parts and then separated from the plastic parts.
6, with lateral typing and core mechanism of injection molding mold When the plastic parts have side holes or side concave, it is necessary to use the lateral movement of the core or sliding block molding. After injection molding, the moving die first moves down a distance, and then the Bevel segment of the bending pin fixed on the fixed template forces the slide to move outward. At the same time, the push rod of the demolding mechanism pushes the push plate to make the plastic part from the mold. Take off on the core. The mold is opened and molded by the dgaokai.
7, no flow channel injection mold No flow channel injection molding is to use the method of adiabatic heating of the flow channel to maintain the melting state of the plastic from the injection machine nozzle cavity, so that when the mold is removed from the plastic parts No pouring system agglutination. The former is called adiabatic flow injection molding, and the latter is called thermal flow injection molding.
It is understood that when the single surface injection mold is opened, the dynamic mold and the fixed mold are separated, and the plastic parts are taken out. The single surface mold is also called the double plate mold. It is the simplest and most basic form of injection mold. It can be designed as a single cavity injection mold, or it can be designed as a multi-cavity injection mold. It is the most widely used injection mold.