Molds are a type of tooling products widely used in various industries. Commonly used molds include plastic injection molds, die-casting molds, pressing molds, blow molds, extrusion die molds, and foam molds. Mold is a negative of the parts to be manufactured, and the shape and structure of the mold determine the shape of the parts to be produced. It takes a long time to make a complex product, and it often takes several days or weeks to make a mold of the same complexity. The mold should undergo strict debugging during the manufacture process, and the debugging process should be refined and improved before the product can be mass-produced.
Plastic injection molds are the most commonly used ranking among all the molds. Plastic injection molding process uses high temperature to melt the plastic,Injection molding machine, inject the melted plastic into the mold cavity and then cool down the mold temperature of the plastic, Finally you will get your desired plastic parts. Plastics are widely used in our daily life, especially in car parts, electronics materials, and toys, Each kind of plastic has different characteristics and will be used in different industries depending on the properties it has.
Die-casting molds are usually used to produce metal parts, including Zinc alloy, aluminum alloy, magnesium alloy and many more. Die-casting is much more cost-effective compared to other methods, as it can provide high-precision parts while saving time and labor costs. Die-casting molds are usually composed of two parts, a fixed mold and a movable mold. The fixed part is usually the bottom of the mold, and the required parts are molded by injecting high-pressure molten metal into the cavity formed by the two parts.
Punch molds are a kind of blanking molds with good dimensional accuracy, They are similar to injection molds and die-casting molds, But punch molds are often used to produce flat or curved parts made of non-metal or non-plastic materials. Common punch molds materials include leather, rubber, leather, paper and cardboard. The process for making punch molds is quite simple and requires little processing time. This type of mold is best suited for small-scale production, as the cost of punch molds is usually low.
Blow molds are a kind of molds commonly used to produce hollow plastic parts and hollow containers. The blow molding process is slightly different than other molding processes, As blow molding needs a kind of air that can be pressurized and blown into the plastic material, thus expanding it and forming a desired shape by firming the plastic strings when the air expands. Hollow parts produced by blow molding are widely used in many industries, for example vacuum cleaner containers, chemical containers, etc.
Extrusion die molds are mainly used for extruding plastic materials. The basic principle of plastic extrusion is that the melted plastic material is forced to pass through a shaped die, thus forming a desired shape. The plastic material must be heated and then melted before passing through the die and the extruding force must be properly controlled in order to obtain the desired shape. Extrusion Die molds are commonly used to make thin, tubular products and many solid shapes.
Foam molds are commonly used to produce foam parts. Foam molds require a special type of foam that can retain its shape after being heated, cooled and pressurized. After heating the foam in the mold, it can take the desired shape according to the shape of the mold. Then the mold can be cooled and removed, thus obtaining the desired product. Foam molds are mainly used in industries such as automotive, aerospace, electronics, and medical.
In conclusion, molds are very crucial in the production process, There are a wide variety of molds which depend on the characteristics of the materials to be molded as well as other conditions. Each kind of mold has its own manufacturing process and application field. All of these molds have been widely used in the production of various products, and the application of molds in many industries has greatly improved the level of mass production.