(1) Single parting injection mold. When opening the mold, the moving mold and the fixed mold are separated to remove the plastic part, which is called a single parting surface mold, also known as a double plate mold. It is the simplest and most basic form of injection mold, which 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.

(2) Double parting injection mold. Double parting injection molds have two parting surfaces. Compared with single parting injection molds, double parting injection molds add a movable intermediate plate (also known as a movable gate plate, which is equipped with gates, runners, and other parts and components required for the fixed mold) in the fixed mold part. Therefore, it is also called a three plate (movable template, intermediate plate, fixed template) injection mold. It is commonly used in injection molds with single or multiple cavities for sprue feeding. When opening the mold, the middle plate is separated from the fixed template by a certain distance on the guide column of the fixed mold, so as to remove the pouring system aggregate between these two templates. Double parting injection molds have complex structures, high manufacturing costs, and difficult component processing, and are generally not used for the molding of large or extra large plastic products.

(3) Injection mold with lateral parting and core pulling mechanism. When plastic parts have side holes or indentations, laterally movable cores or sliders should be used for molding. After injection molding, the moving mold first moves backwards a certain distance, and then the inclined section of the bent pin fixed on the fixed template forces the slider to move outward. At the same time, the push rod of the demolding mechanism pushes the pushing plate, causing the plastic part to detach from the core.

(4) Injection molds with movable molding components. Due to certain special structures of plastic parts, it is required to set movable molding components in injection molds, such as movable convex molds, movable concave molds, movable inserts, movable threaded cores or rings, etc. When demolding, they can be removed from the mold together with the plastic parts and then separated from them.

(5) Automatic thread removal injection mold. For plastic parts with threads, when automatic demolding is required, a rotatable threaded core or ring can be set on the mold, and the opening action or the rotating mechanism of the injection molding machine, or a special transmission device can be set to drive the threaded core or ring to rotate, thereby demolding the plastic part.

(6) Non flowing injection mold. Non flowing injection mold refers to the method of adiabatic heating of the flow channel to maintain the plastic in a molten state between the injection molding machine nozzle and the mold cavity, so that there is no solidification in the pouring system when opening the mold and removing the plastic parts. The former is called adiabatic flow channel injection mold, while the latter is called hot flow channel injection mold.

(7) Right angle injection mold. Right angle injection molds are only suitable for angle injection molding machines. Unlike other injection molds, this type of mold has a feeding direction perpendicular to the opening and closing direction during molding. Its main channel is located on both sides of the parting surface of the moving and fixed molds, and its cross-sectional area is usually constant, which is different from the molds used in other injection molding machines. At the end of the main channel, replaceable channel inserts can be installed to prevent wear and deformation between the injection molding machine nozzle and the inlet end of the main channel.

(8) The demolding mechanism is an injection mold on the fixed mold. In most injection molds, the demolding device is installed on the side of the moving mold, which facilitates the operation of the ejection device in the opening and closing mold system of the injection molding machine. In actual production, due to the shape limitations of some plastic parts, it is better to leave the plastic parts on the fixed mold side for molding when opening the mold. Therefore, a demolding mechanism must be set up on the fixed mold side.