Cetakan adalah alat yang menggunakan bentuk tertentu untuk membentuk produk dengan bentuk dan ukuran tertentu. Berbagai cetakan banyak digunakan di berbagai industri pengolahan bahan. Sebagai contoh, cetakan pasir atau die-casting yang digunakan dalam pengecoran logam, penempaan mati untuk pemrosesan tekanan logam, dingin mati dan sebagainya.
Persyaratan keseluruhan cetakan adalah dapat menghasilkan produk publik yang memenuhi persyaratan dalam presisi dimensi, Masalah umum dalam pemrosesan semprotan produk plastik, physical properties and so on. From the angle of mould use, it requires high efficiency and simple automatic operation, and from the angle of mould manufacture, it requires reasonable structure, easy manufacture and low cost.
The mold affects the quality of the product. Pertama, the shape, ukuran, permukaan akhir, permukaan akhir, the position of the gate and the exhaust groove and the mode of demoulding, as well as the physical properties of the parts, the mechanical properties, the electrical performance, the internal stress size, the isotropy, the appearance quality, the surface finish, the bubble, dan seterusnya. Indentation, terik, and silvery are very important. Kedua, in the process of processing, the structure of the mold has a great influence on the operation. In the mass production of plastic products, it is necessary to minimize the opening of the mould, the process of closing the mould and the manual labor in the process of taking the parts. It is also necessary to ensure that the products can be automatically removed from the mold. Tambahan, the mold has an impact on the cost of the products. When the batch is not large, the cost of the mold will be very large in the cost of the parts. Pada saat ini, a reasonable and simple mold should be used as much as possible to reduce the cost.
In modern production, reasonable processing technology, efficient equipment and advanced mould are three essential factors, especially the mold plays an important role in realizing the requirement of material processing, the application requirement of plastic parts and the modeling design. Efficient automatic equipment can play its role only if the mould can be automatically produced. The production and renewal of the products are based on the manufacturing and updating of the mould. Because of the great demand for product variety and production, the mould is required more and more. Karena itu, to promote the continuous development of the mold.
