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What are the components of an injection mold?

The injection mold consists of a movable mold and a fixed mold. The movable mold is installed on the moving template of the injection molding machine, and the fixed mold is installed on the fixed template of the injection molding machine. During injection molding, the movable mold and the fixed mold are closed to form a gating system and a cavity. When the mold is opened, the movable mold and the fixed mold are separated to take out the plastic product. In order to reduce the heavy workload of mold design and manufacturing, most of the injection molds use standard mold bases.

Temperature control in injection molding process

⒈ Barrel temperature: The temperature that needs to be controlled in the injection molding process includes barrel temperature, nozzle temperature and mold temperature. The first two temperatures mainly affect the plasticization and flow of plastics, while the latter temperature mainly affects the flow and cooling of plastics. Each plastic has a different flow temperature. For the same plastic, due to different sources or grades, its flow temperature and decomposition temperature are different. This is due to the difference in average molecular weight and molecular weight distribution. The plasticizing process in the machine is also different, so the selection of the barrel temperature is also different.

Problems that are easily encountered in the processing of plastic molding molds

Plastic molding molds are used to produce large-scale injection molded parts with the advantages of high efficiency, good quality, less cutting, saving energy and raw materials, and low cost. However, due to the complex processing process of plastic molding molds, there will be many problems. This chapter will introduce plastics. Problems that are easily encountered in the processing of forming molds.

What categories are included in the technical requirements in the general assembly drawing of the switch and socket mold?

After drawing the sketch of the switch and socket mold, the mold design engineer will start to draw the general assembly drawing of the switch and socket mold assembly drawing. The general assembly drawing will generally indicate the mold size, name, material, shrinkage rate, special requirements, etc. It is important to indicate some technical requirements of the switch socket mold during the manufacturing process. for example:

Basic introduction to plastic molds

A combined plastic mold for compression molding, extrusion molding, injection molding, blow molding and low-foaming molding, which mainly includes a die combination base plate, a die combination and a die combination card with a variable cavity. The punch is a punch with a variable core, which is composed of a punch combination base plate, a punch assembly, a punch combination card board, a cavity cutting assembly and a side section combination plate. Coordinated change of mold convex, concave mold and auxiliary forming system. It can process a series of plastic parts of different shapes and sizes. In the plastic 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 plastic varieties and processing methods, and the complex and simple structures of plastic molding machines and plastic products, the types and structures of plastic molds are also diverse.

What maintenance should be done for injection molds in normal and in the process of use

(1) It is necessary to clean the oil stains and rust on the surface of the mold and check whether there are foreign objects in the cooling water holes of the mold, and whether there is a waterway blockage.