With the increasingly developed technology plastic products have long become a product that can not be replaced in our daily life, in real life plastic products have almost taken over various fields, such as life friends can see at any time cars, boats, aircraft, computers, telephones and a few other substances, their few plastic parts are through plastic injection molding, when a product is born, open mold is indispensable. We need to find a mold factory, we often think that the injection mold and plastic mold is a meaning, hot to hear the difference between plastic molds and injection molds, please read this article, will take you to hear the difference between!
Plastic mold, a combination of plastic mold for compression molding, extrusion, punching, blow molding and low foam molding, mainly contains a concave mold with variable cavity composed of concave mold combination substrate, concave mold assembly and concave mold combination card plate, a convex mold with variable core composed of convex mold combination substrate, convex mold assembly, convex mold combination card plate, cavity cut-off assembly and side cut-off combination plate. Coordinated change of mold convex and concave dies and auxiliary molding system. A series of plastic parts of different shapes and sizes can be processed.
The injection molding tool is an object for manufacturing plastic products; it is also an object that pays for the complete layout and exact size of the plastic products. Injection molding is a processing technique used in the bulk manufacturing of certain complex shaped parts. Specifically, the molten plastic is injected into the mold cavity at high pressure by the injection molding machine, and then cooled and cured to obtain the molded product. The injection molding tool consists of a moving mold and a fixed mold, the moving mold is placed on the moving template of the injection molding machine and the fixed mold is placed on the fixed template of the injection molding machine. During the injection molding, the dynamic mold and the fixed mold are closed to form the pouring system and cavity, and when the mold is opened, the dynamic mold and the fixed mold are separated in order to take out the finished plastic products. In order to cut down the heavy mold design and manufacturing workload, most of the injection molds accept the standard mold frame.
From the above, we can see that there are some differences between plastic moulds and injection moulds, which also facilitate the communication between us and plastic mould manufacturers to avoid mistakes.
Plastic mold products why deformation
Plastic mold convex, concave mold and auxiliary molding system of coordinated changes, can be processed in different shapes, different sizes of a series of plastic parts. In order to meet the needs of the molded parts, we need to pay attention to a few things when selecting a plastic mold, and make a response to the needs. The following selection of a more suitable plastic mold needs to meet the following six general requirements
1, high corrosion resistance many resins and additives to the surface of the cavity have erosion benefits, this erosion makes the cavity surface metal dissolution corrosion, flaking, surface condition deterioration, plastic parts quality deterioration. Therefore, the Z best application of corrosion-resistant steel, or the surface of the cavity for chromium, cyanide nickel disposal.
2, good wear resistance plastic surface gloss and precision of the finished product and plastic mold cavity surface wear resistance has a crisp relationship, especially some plastics with glass fiber, inorganic fillers and some pigments, they and the plastic melt all the way in the runner, mold cavity high speed activity, the cavity surface conflict is great, if the material is not wear-resistant, will soon wear, so that the quality of plastic parts are damaged.
3, good dimensional stability in plastic molding, plastic mold cavity temperature to reach more than 300 ℃. For this reason, Z good use by the appropriate tempering treatment of the object steel (heat treatment steel). Otherwise, it will cause a change in the microscopic layout of the material, resulting in changes in the size of the plastic mold.
4, easy to process mold parts made of metal, some layout shape is also very complex, in order to shorten the manufacturing cycle, improve the obedience, the requirements of the mold material is easy to process into the shape and precision required by the drawings.
5, good polishing performance plastic parts usually require a good gloss and surface conditions, so the cavity surface roughness is very small, such as, the cavity surface must be surface processing, such as polishing, grinding, etc.. Therefore, the selection of steel should not contain rough impurities and good holes, etc.
6, the impact of heat treatment is small, in order to improve the hardness and wear resistance, the general plastic mold to heat treatment, but this treatment should make its size change is very small. Therefore, Z good to accept the cutting process pre-hardened steel.
Post time: Nov-18-2022