In the processing industry, it is matched with plastic molding machines to give plastic products a complete configuration and precise size tools.

Due to the variety of plastics and processing methods, and the structure of plastic molding machines and plastic products are complex and simple, the types and structures of plastic molds are also diverse.

Technical application of plastic mold products

A combined plastic mold for compression molding, extrusion molding, injection, blow molding and low foaming molding. It mainly includes a cavity with a variable cavity composed of a concave mold combined substrate, a concave mold component and a concave mold combined card board The concave mold is a convex mold with a variable core composed of a convex mold combined base plate, a convex mold component, a convex mold combined card board, a cavity cut-off component and a side cut combined board.

The coordinated changes of the mold convex, concave mold and auxiliary molding system. Series of plastic parts of different shapes and sizes can be processed.

The various tools and products used in our daily production and life, ranging from the base of the machine tool, the body shell, to a small screw, button and the shell of various household appliances, are all closely related to the mold.

The shape of the mold determines the appearance of these products, and the processing quality and precision of the mold also determine the quality of these products. Because of the different materials, appearance, specifications and uses of various products, molds are divided into non-plastic molds such as casting molds, forging molds, die-casting molds, and stamping molds, as well as plastic molds.

1. In recent years, with the rapid development of the plastics industry and the continuous improvement in strength and precision of general and engineering plastics, the application range of plastic products is also expanding, such as: household appliances, instrumentation, construction equipment, automobile industry In many fields such as, daily-use hardware, the proportion of plastic products is increasing rapidly. A reasonably designed plastic part can often replace multiple traditional metal parts. The trend of plasticization of industrial products and daily-use products is on the rise.

2. The general definition of the mold: In industrial production, various presses and special tools installed on the press are used to make metal or non-metallic materials into parts or products of the required shape through pressure. These special tools are collectively called molds .

3. Description of injection molding process: A mold is a tool for producing plastic products. It is composed of several groups of parts, and there is a molding cavity in this combination. During injection molding, the mold is clamped on the injection molding machine, the molten plastic is injected into the molding cavity, cooled and shaped in the cavity, and then the upper and lower molds are separated, and the product is ejected from the cavity and out of the mold through the ejection system, and finally the mold is closed For the next injection, the entire injection molding process is carried out cyclically.

(1) On the mold line, the mold is released together with the product when the mold is opened. The design is the simplest, easy to process, and low cost, so more people use the large nozzle system to work.

(2) Nozzle mold: runners and gates are not on the parting line, generally directly on the product, so it is necessary to design an additional set of nozzle parting lines, the design is more complicated and the processing is more difficult, and generally depends on the product requirements. Fine nozzle system.

(3) Hot runner mold:

The structure of this type of mold is roughly the same as the nozzle. The biggest difference is that the runner is in one or more hot runner plates and hot nozzles with a constant temperature. There is no cold material demoulding, and the runner and gate are directly on the product. The runner does not need to be demolded. This system is also known as a nozzleless system, which can save raw materials and is suitable for situations where raw materials are more expensive and products require higher requirements, which are difficult to design and process, and mold costs are higher.